JPS58172105A - Lifting bucket - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to lifting packets, especially crushing? ! This article relates to a cantilevered packet for a 7-lift machine.

An elevator for crushed material packets is a device for lifting dense fluid materials from a lower position to a higher position.

The equipment in this building is cement and rock.

Fertilizer: 1 lime, gypsum powder, pyrite, 2 slags: 2 coal.

It must be designed to withstand the harsh operating conditions encountered when handling materials such as fine ore.

The packet lift consists of a long endless chain loop suspended between an upper pull car and a lower tin rocket car. The material is then attached to a series of packets or chains for transporting the material from one end of the plane to the other.

Typically, elevators are installed vertically and operate within a casing. The loading chute has a supply chute near the bottom of its foot shaft for filling each packet with a material tray, and a discharge chute near the top of its head shaft for discharging the entire body of the packet. It is determined by the maximum tube clearance of the elevator, the size and strength of the chain, the density of the material to be transported, and the size and weight of the packet.

Conventional elevator packets suffer from a short service life depending on the situation. The applicant analyzes and tests rice milling,
It was concluded that the cause of fatigue failure in lifting and lowering buckets was the resonant vibration of the packet caused by the collision of the chain bushing with the tension force. The resonance fkR motion of the packet that occurs when the cart passes by is
Internal stress in the packet? causing this internal stress to be concentrated in several areas of the packet. Due to the concentration of internal stress, fatigue cracks begin at the point where the stress is placed.
This crack spreads to the joints and corners of the packet located near the attachment point to the chain. Although the manufacturer is not responsible for fatigue damage to the elevator due to use exceeding the design limit, the occurrence of such damage could result in an unfavorable reputation for the manufacturer. Therefore, in order to prevent fatigue cracking under any usage conditions, the packet is heavy to install.

As one way to extend the service life of a single-charcoal brush, it has been proposed to install a mounting device for vibration isolation between the packet and the chain (5). Although this method does reduce the occurrence of fatigue damage as described above, when the number of packets of the elevator is considered, the mounting device required for vibration isolation becomes extremely expensive. This is because the number of packets that can be attached to one chain reaches 400. Under these circumstances, in order to solve the problem of fatigue cracking at low cost and with high durability, the applicant has designed the entire packet itself so that it will not cause fatigue cracking under any stress that may occur. I came to the conclusion that I needed to fix it and make it more resistant to vibrations.

However, if you design and modify the entire packet based on the entire configuration of the existing elevator, the existing elevator will be replaced by the existing elevator lI4!
The problem arises that it must be adapted to the m design. This is because redesigning the tin body to match the new packet configuration would be very expensive. Better yet! 5. Importantly, the new packet must fit into any of a number of existing elevators. This is because when the conventionally designed packets used in existing elevators wear out and become unusable (6), it is necessary to replace them with completely new packets to achieve the same operational performance as the old elevator.

In addition to extending the service life of the tray, it is desirable to improve the entire packet in other respects as well. For example, designed packets are advantageous because they are easier and faster to manufacture, use lightweight standard materials, have fewer dissimilar parts, and are easier to fill than standard molds.

Also, the improved packet should be lightweight and the elevator height t should be as large as possible. Furthermore, it is of course desirable to increase the capacity of the packet to the maximum capacity of the entire elevator while adapting the dimensions to the existing elevator.

Therefore, the purpose of the ``non-explosion ψ'' is to develop a method for manufacturing a packet metal for lifting and lowering crushed materials that is resistant to the fatigue effects of vibration, lightweight, and inexpensive.

Another object of the present invention is to provide a complete package for a crushed material elevator that is resistant to vibration fatigue and is inexpensive. Another object of the invention is to provide a packet i which can be assembled with a reduced number of different scissor parts and in which critical dimensions can be more easily obtained.

These and other objects of the present invention provide for an elevator bucket having a place extending transversely from the front end lip to the rear wall and a bar extending longitudinally along the rear top lip to provide full torsional strength. Thus, four things are accomplished.

A preferred embodiment of the invention is the front side of the packet.

The bottom and back walls of the can are completely formed, and the deep groove-shaped wrapper member that also forms the reinforcing bar metal at the top is fully valved.

First, holes cut into both the back and bottom walls of the bar member serve as openings that define the ends of the chain channel. Four identically shaped plates are placed on the two outer sides of the packet.
A cross-section corresponding to the hole in the wrapper member forms two inner 11tlI walls extending across the U-shaped channel. This inner sidewall flanks the chain channel and also functions as a transversely extending leading edge lip place. The back plate is secured to the inner side wall and to the wrapper member plate abutting the upper end of the hole, thereby forming the front wall of the chain channel.

Is the following a good implementation of the present invention? I will explain U-bon in detail according to the drawing. In the valley drawings, the same band numbers represent corresponding parts.

First, referring to FIG. 1, the lifter for crushed material packets to which the packet of the present invention is attached has ten casings, and the casings 10 surround the movable components of the lift. This flexible gjb component is the casing head 15
a support shaft 14 journalled in end bearings (not shown);
a top tension base or sprocket 12 mounted on a support shaft 18 mounted on a support shaft 18 journalled in an end bearing in a winder (not shown) of the casing paper section 19; Consists of 16. A continuous long loop of chain 2° is supported vertically by a tension unit 12 at its top and guided by a tri sprocket 16 at its bottom. Pull car 1 shown in detail in Figure 2
6 is a hub 22 k * L , and a hardened *A# glued part 24 is identified by a bolt 26 (9) in this hub 22 .

As shown in Figure 2.3, the chain 2° is connected to the bottle 3.
A pair of half-line chains each connected by 0 :/')7
28, and a chain bush 32 creates a parallel V.
C are held in spaced relational positions. Another pair of chains 28a is arranged outside the valley pair of chain links 28, and these outer links 28aVC are provided with attachment 7 langes 34. Each mounting flange 34 has three holes 36 arranged on parallel vertically aligned axes into which bolts 38 for securing the packet 21 to the 7 flange 34 fit. will be combined.

Generally, the operation of a packet elevator is as follows. The support shaft 14 of the pulling wheel 12 is driven by an electric motor (none of which is shown) via a gearbox and chain transmission means to cause the pulling wheel 12'7 to rotate in the clockwise direction indicated by the arrow 40. The material to be lifted is fed to the elevator through the inlet seam 142 and into the open top trough bucket 21. Each (10-inch packet) has a front wall tilted forward, so that all of the material falling from the inlet chute 42 can be easily removed, and as will be described later, all of the material falling from the inlet chute 44 is transferred by centrifugal force to the exit chute 44. 2. As shown in the figure, the valley buckets 21 are spaced apart and very close to each other. As is clear from FIG. 2, packets are attached to successive link pairs every t,
Chain bushes 32 are spaced apart, for example, by 6 inches. Therefore, in this case, the % IJ link is 1 on the chain.
A distance of 2 inches will be provided on all floors.

This results in very close spacing between the packets, but due to the forwardly extending front wall and the velocity of the material falling through the inlet chute 42 into the casing, the vertical blades along the chain 20 of the packets are aligned. Even if the distance is short, it is possible to fill each packet with the material tray.When the packet is carried by the DL chain and rises, and the packet passes the 9 pulling wheels, the contents of the packet are thrown out by the centrifugal force and into the exit chute 44. released. The empty packet goes down along the other side of the chain loop,
This leads to sprocket (16) of the gravity winding device. The gravity take-up device is located in the casing bottom 19 and serves to maintain the correct chain tension and to ensure accurate alignment of the entire chain.

Here, the shortening of the durable service life that was often observed in the conventional packet shown in FIG. 3 was caused by the following reasons. When the rising chains 10 and 32 reach the pulling wheel 12, each button hits the pulling wheel and receives a shock wave, which is a function of chain speed, chain tension, chain pitch, hardness of the connecting wheel and the pulling wheel. arise. This impact is transmitted to the rear wall 46 of the packet 21 through the chain attachment 7 langes 34. Therefore, the back wall is excited into a state of resonant vibration by its 1jl [J shock.

The front wall 50 of the bucket 21 is supported by the opposite end walls 52 and the bottom wall '54 of the packet, but not along the entire length of the leading edge or lip 56 between the opposite end walls 52. When the packet is in a state of resonant vibration, the front wall 50
is similar to the skin of a drum at its natural frequency! Vibrate. The inertial force according to the amount i of the front wall 50 that moves in a similar manner is
It must grow in size and be supported by attachments to the end and bottom walls. The resulting stress is concentrated in the upper corner portions of the chain channel and other high stress areas. Cracks then begin to form in certain portions of the packet, particularly in areas that are fixed against deflection, and these cracks propagate to the channel components, resulting in loosening or dislodging of the packet. If this condition is left untreated, damage will eventually spread not only to the casing of the elevator but also to the rest of the packet.

On the other hand, the packet of the present invention shown in FIGS. 4 to 7 consists of a wrapper plate 60, which has a deep groove-like tab p cross section along the %vT9 bends mh and D, which are semi-linear to the long axis 61. It can be bent into a U-shape. The wrapper grate 60, which has been bent in this way, has a wall surface 2, a bottom floor 64, a vertical back wall (13) 66, and a top wall 681r that slopes forward. We are prepared. The wrapper plate 60 terminates in a narrow top back lip 70 that is located parallel and at a distance above the bottom floor 64. A wear-resistant bar 72 made of hardened steel is attached to the front edge of the inclined front wall 62.
are welded and secured to form a wear-resistant leading edge 73 which provides sufficient wear resistance in areas where material falling from the inlet chute 42 is struck and where the greatest wear occurs.

As shown in FIGS. 4 to 7, when folded into a deep groove, the wrapper plate 60 is formed with a rectangular open lower portion 4, which is a vertical opening provided in the packet to accommodate all the chains in FIG. A rear opening is provided for channel 75. Both 10uK of the oblong open lower 4 have a set of three mounting holes 7 arranged in a vertical line.
6 is formed, and the above-mentioned chain attachment 7 langes 34t
Mounting bolts for fixing to the packet are fitted into each mounting hole 76.

(14) A combination of four side wall pieces consisting of two outer side wall pieces 78 and two inner side wall pieces 80 are formed in a deep groove shape along the transverse direction that is directly fired in the longitudinal power recirculator 61. wrapper gray) 60
It extends across the P1 deep groove, closes both ends of the deep groove, and divides its interior into three spaces. Outer side wall piece 7
Since the inner sidewall pieces 80 and 80 are all of the same shape and have equal outer edge dimensions, each of these pieces can be cut at once by a digitally controlled flame cutter or plasma arc cutter in a complete stack of sheet steel. Can be cut and molded.

Of course, the present invention is not limited to this, and any of these cutting methods can be formed by shearing, stamping, or other suitable cutting techniques. The circular side wall pieces 80 each have another opening 82 formed in the front medium-heat section, so that the material falling into the packet from the inlet chute 42 of the casing is separated from the medium-heat compartment 84 by two on each side. It is designed to fit into two side compartments 86. To prevent material from spilling to the bottom of the elevator, the width of the inlet chute is often selected to be about two-thirds of the total packet, and most of the material is stored in the medium fire compartment 84. Therefore, it is desirable to have the above configuration.

The outer sidewall pieces 78 are positioned slightly inward from the outer edge of the wrapper plate 60 (Dfi) to provide a projecting lip on the wrapper plate 60, thereby
By forming a part of the inner corner at the outer side wall piece 78, it is possible to easily weld and fix the entire edge of the outer side wall piece 78 securely.

Similarly, each inner side wall piece 80 is positioned slightly outwardly from the edge of the rectangular opening lower 4, thereby forming a part of the inner corner, and each inner 4A side wall piece 80 is positioned slightly outward from the edge of the rectangular opening lower 4.
It is possible to reliably weld to the line part.

A rectangular back plate 88 is welded and fixed in a nearly vertical state between the bottom 70 aro 4 and the top lip 70 of the wrapper 60 at a position close to the bottom edge and top edge of the open lower 4. Both ends of the rectangular back plate 88 are in contact with the side surfaces of the corresponding inner side wall pieces 80, respectively. In this configuration, the back surface of the back plate 88 forms the front side of the vertical chain channel 75, and each rear part of the inner side wall piece 80 forms the side surface of the chain channel 75. formed respectively.

The inner sidewall pieces 80 also serve the important function of providing strength not only to the sloped front wall 62 of the packet, but also to the entire packet. The long cantilevered front edge 73 and the entire front wall 62 of the packet are supported and reinforced by the two inner side wall pieces 80, resulting in support n
The effective length of the leading edge 73 of the previous issue is reduced to one-third. Accordingly, the vibration amplitude of the front wall 62 is significantly reduced, and the stress generated in the critical region of the packet as a result of resonance is correspondingly reduced. On the other hand, the top back tab 70 is
It provides a large torsional strength to the packet, which allows torsional deflection to occur when the packet is loaded and when the chain bushing collides with a pulling vehicle, and also plays a full role in the stress cycle noise that accompanies this.

Inside the vertical back wall 66 of the wrapper plate 60,
A bearing plate 90 is provided at the location where the mounting hole 76 is provided, and a thick and strong lining p is completely formed on the mounting bolt 38 (17) for holding the packet 21 to the chain mounting flange 34. There is. %
4IIIl The receiving plate 90 is attached to p1 by the mounting bolt 38.
Since it has the function of dispersing the force applied to 4'1006 over a wide area, the maximum stress is maintained within a certain limit,
As a result, a durable service life that satisfies this range of capacity can be obtained.

To manufacture the packet, cut the wrapper plate 60 to exact external dimensions, form the open lower 4'kvJ shape, and drill the mounting holes 76.
This is done by kepanching. Next, fold the thus formed rectangular play)'r along the two parallel lines marked A and D in this order, forming sections 4 to 7.
The bend is formed into the deep groove shape shown in the figure. in this case,
It is important that the bending at the rear lower corner bend line is done afterwards. Otherwise, during the next bending process, the 1illJ surface of the deep groove plate 60 will interfere with the structure of the press device 7, making it impossible to form the plate. The press equipment must be controlled carefully so that the lines are parallel in each fold. Otherwise, the outer and inner sidewall pieces 78,80 will not fit properly into the depth plate (18) and the packet will no longer lie horizontally with respect to the chain.

After bending the entire wrapper plate correctly, press the back plate L, -
) 88 and outer XII & sacral side m piece v s, s
.

Cut and weld. From the point of view of welding speed and quality, it is desirable to perform the above-mentioned conventional welding work using automatic fI type submerged arc welding. Large production volume, automatic m
If the equipment and installation area for contact work is worth the cost,
Of course, other welding methods can also be used.

In the present invention, since it is necessary to weld all of the inner side wall pieces 80 at predetermined positions, the welding length required to manufacture the packet is somewhat longer than that of conventional packets, but the increase in cost due to this additional welding is , can be reduced to 1j by using an automatic proverbial connection device with 6 pins.

Father, saving of materials by saving preparation material of light weight, longer service life of durable parts, faster passing speed, further increase of δ of elevators made possible by using lightweight packets, and traction wheels of chain pushers. Reduction of stress generation due to collisions of additional #
The above mentioned cost increase associated with the ship is compensated for by the additional benefits.

In the present invention, the internal support provided by the inner sidewall pieces 80 and the top lip 70 provide increased stiffness to the packet, allowing the use of lighter standard materials. For example, J! # Conventional packets used for disembarkation are usually made of No. 7 gauge steel, but the packet of the present invention has high structural strength, so it can be made entirely of a much lighter material. The packet of the present invention is 1
Even if it is made from 0-14 gauge thin steel plate, it will be stronger and more rigid than conventionally designed packets. Moreover, the weight of the packet according to the present invention is lighter than that of a conventional packet of the same capacity. Therefore, the entire island of the elevator can be placed as much as t. Further, due to the high rigidity and weight of the packet, the packet of the present invention is highly resistant to vibrations and stresses that occur during high speed operation. That is, when the new packet according to the present invention is applied to an existing elevator and escalator, the same can be achieved in terms of durability and operating efficiency.

In addition, in the packet of the present invention, manufacturing efficiency is also improved because the number of parts of different shapes among the parts used is small. In other words, since the single wrapper grating 60 and the inner and outer wall pieces 80.78 having the same external dimensions and shape are conveniently used, the number of parts with different shapes used in the packet of the present invention is small. There are 4 pieces. There are only the bar plate 60, the inner and outer wall pieces 80, 78, the back plate 88, and the bearing plate 90. Of these, wrapper plate 60. Since the bearing plate 90 and the rear plate 88 are rectangular, the waste generated when these plates are cut and formed is suppressed to a small amount.

As described above, in the present invention, by providing the reinforcing member, the front wall 62 is internally supported, and the longitudinal direction l1
Although the torsional strength around I11161 is fully maintained, these reinforcing members also serve other structural functions. For example, the top lip 70 only forms a portion of the end of the wrapper gray 60 and does not require any separate linework of its own. However, this top lip 70 is not only used to (21) attach the top edges of the back plate 88 and the inner sidewall pieces; Importantly, a high torsional strength is imparted to the entire packet against deflection in the longitudinal direction 4Ili161r@C. Similarly, the inner sidewall piece 80 also has multiple functions.

These side wall pieces 80 not only form the entire side wall of the chain channel 75, but also the back wall 6 of the wrapper plate 60.
6 and the inclined top wall 68 at the chain attachment part, and by further reinforcing the entire front wall 62, the amplitude of the resonant vibrations that occur when filling with material or when the chain bush hits the pulling wheel can be reduced. It also has the role of making it smaller.

Although a preferred embodiment of the present invention has been described above, it will be obvious to those skilled in the art that various other modifications and changes can be made based on the disclosed content.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a pulverized material packet elevator for which the packet according to the present invention is designed, and FIG. M2 is a front view of the upper end of the packet elevator shown in FIG. (22) Full details shown, FIG. 3 is a perspective view of part of the elevator chain shown in FIG. 1 and a conventional packet; FIG. 4 is an enlarged perspective view of the packet according to the invention; FIG. is a front elevational view of the packet shown in FIG. 4, FIG. 6 is a sectional view taken along line 6-6 in FIG. 5, FIG. 7 is a rear perspective view of the packet shown in FIG. 4, and FIG. The figure is a half-developed view of the wrapper plate used in the packet of the present invention. (Explanation of symbols) 10...Casing, 12...Top pulling wheel, 14
゜18...Support shaft, 15...Casing head, 16...Bottom tin rocket, 19...Casing bottom, 20...Chain, 21...Packet, 22
...Hub, 24...Rim piece, 26...Bolt,
28...Chain link, 28a...Outer chain link, 30...Bin, 32...Chain bush, 34...Mounting 7 lange, 36...Hole, 38-...
Bolt, 42... Input seat, 44... Output seat, 60... Wrapper plate, 61... Longitudinal axis, 62... Front wall, 64... Bottom floor, 66
...Back wall, 68...Top wall, 70...Top lip, 72...Abrasion resistant bar, 73...Abrasion resistant tip line,
74... Rectangular opening, 75... Section 1 chain channel, 76... Mounting hole, 78... Outer side wall piece, 80
... Same side side wall piece, 82... Opening of same side 11fl wall piece, 84... Central compartment, 86... Side compartment, 88...
・Back plate, 90...Bearing plate. Applicant: Reck Nunord Inc. Representative: Kiyo Maruyama F/θ8 1818 Terash West, Greenfield, Wisconsin 53228, United States of America

Claims (1)

[Claims] (1) A front wall (62) which is bent and formed into a U-shaped deep groove shape along a bending line parallel to the axial direction axis;
An integral wrapper plate forming all the bottom floor (64), back wall (66) and top lip (70)
(60); an opening (74) formed in the wrapper plate over the bottom floor and the rear wall; having the same external dimensions and shape, the shape of which fits completely across into the U-shaped deep groove of the wrapper plate; two inner side wall pieces (80) and two outer side wall pieces (78), each side of which is fixed to said front wall, bottom floor, back wall and top lip of the wrapper plate;
; Of the two pieces, [N wall pieces are all near both sides of the opening, respectively, in the U-shape i#! two outer sidewall pieces extending across the U-shaped opening near the longitudinal edges; A back plate (88) identified and identified on the inner side wall piece along opposite side edges; the back plate and the two inner side wall pieces are closed to the open Ro't-U-shaped deep groove; The chain (20) to which the packet is attached shall have a vertically extending channel (75) for receiving; the torsional strength of the front wall is increased; and the inner side wall piece acts as a support member along the transverse direction, increasing the transverse strength of the front wall, thereby minimizing the overall amplitude of resonant vibrations generated in the packet. An elevating packet for attachment to an elevating chain, characterized by: (2) further comprising a wear-resistant bar (73) fixed to the front wall along its top edge, identified by the four side wall pieces, and made of a material as thick and hard as the wrapper plate; Characteristic feature N'I: Claim No. (1)
Elevation packet as described in section. (3) The above two outer side wall pieces are positioned slightly inward from the longitudinal ends of the wrapper plate, and a part of the corner is completely recessed inward, making it easy to fix the outer side wall pieces to the wrapper plate by welding. The elevating packet according to claim (1), characterized by a tray. (4) Openings (82) in each of the above two inner side wall pieces
is formed, and the material flowing into the area between these inner side wall pieces passes through the opening to two laterally outer areas provided between the two outer side wall pieces and the adjacent inner side wall pieces. and the nuclear opening is 1Illll in the valley.
Claim (1), which is defined by an edge surface spaced inwardly from and parallel to the outer edge of the NAJJ wall piece. Elevation packet described in J.