CN109333747A

CN109333747A - A kind of spreading machine

Info

Publication number: CN109333747A
Application number: CN201811377445.6A
Authority: CN
Inventors: 王道江; 刘年祥; 黄宝平; 沈毅
Original assignee: Jiangsu Jiangyuan Wood Industry Co Ltd; Kuaile Wood Industry Group Co Ltd; Yangzhou Happy Machinery Co Ltd
Current assignee: Jiangsu Jiangyuan Wood Industry Co Ltd; Kuaile Wood Industry Group Co Ltd; Yangzhou Happy Machinery Co Ltd
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2019-02-15
Anticipated expiration: 2038-11-19
Also published as: CN109333747B

Abstract

The present invention discloses a kind of spreading machine, including several spreading heads, and each spreading head is equipped with rake group of mating formation, and the rake group of mating formation includes several rakes of mating formation, each rake of mating formation include mat formation harrow roller and be sleeved on it is described mat formation harrow several orienting pieces of roller；The periphery of the orienting piece is equipped with toothed segment and sickle tooth section, the toothed segment can generate the drawing force moved between adjacent two orienting piece to wood shavings, the sickle tooth section can generate the power of stirring of downward downstream to wood shavings, and the drawing force stirs power greater than described；When the wood shavings can not be dragged to blanking between two orienting pieces by the toothed segment, the wood shavings can be dialed to rake of mating formation described in downstream by the sickle tooth section.Spreading machine provided by the present invention, the orienting piece of rake of mating formation have sickle tooth section and a toothed segment, and the two can generate the active force of different directions to wood shavings, and the wood shavings for being not easy blanking can be dialed to downstream and mated formation rake by sickle tooth section, largely to avoid putty.

Description

Spreading machine

Technical Field

The invention relates to the technical field of shaving board production equipment, in particular to a paving machine.

Background

The paving machine for producing the shaving board comprises a plurality of paving heads, each paving head is provided with a paving rake group, the directional sheets of the paving rakes of the existing paving rake groups are circular sheets, sawteeth are uniformly arranged on the peripheries of the circular sheets, the directional sheets in the form can only generate centripetal force along the circumferential direction so as to drag shavings between the two paving rakes for blanking and paving, and once the shavings cannot be blanked smoothly, the shavings can be blocked between the two paving rakes to cause material blocking.

Therefore, how to provide a solution to overcome the above-mentioned drawbacks remains a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a paving machine, wherein a directional piece of a paving rake is provided with a sickle-shaped section and a saw-shaped section, the sickle-shaped section and the saw-shaped section can generate acting forces in different directions on wood shavings, and the sickle-shaped section can shift the wood shavings which are difficult to be discharged to a downstream paving rake so as to avoid material blockage to a greater extent.

In order to solve the technical problem, the invention provides a paving machine which comprises a plurality of paving heads, wherein each paving head is provided with a paving harrow group, each paving harrow group comprises a plurality of paving harrow, each paving harrow comprises a paving harrow roller and a plurality of directional sheets sleeved on the paving harrow roller; the periphery of each directional piece is provided with a saw tooth section and a sickle tooth section, the saw tooth section can generate dragging force for the wood shavings to move between two adjacent directional pieces, the sickle tooth section can generate stirring force for the wood shavings to move to the adjacent paving harrow, and the dragging force is greater than the stirring force; when the saw tooth section can not drag the wood shavings to the position between the two orientation pieces for blanking, the sickle tooth section can shift the wood shavings to be adjacent to the paving rake.

The paving machine provided by the invention has the advantages that the saw tooth section and the sickle tooth section are arranged on the periphery of the directional piece of the paving rake, the saw tooth section and the sickle tooth section can generate acting forces in different directions on the shavings, when the saw tooth section cannot smoothly drag the shavings between the two directional pieces for blanking, the shifting force generated by the sickle tooth section on the shavings can change the movement direction of the shavings so as to shift the shavings to the downstream paving rake, so that the material blockage can be avoided to a greater extent, and the production continuity can be ensured.

Optionally, the number of the sawtooth sections is multiple, each sawtooth section is distributed at equal intervals along the circumferential direction, and the sickle tooth section is arranged between every two adjacent sawtooth sections; the length of the sickle tooth section is smaller than that of the saw tooth section, the sickle tooth section comprises at least one sickle tooth, the length of the sickle tooth is larger than the width of the shavings, and the length of the saw tooth section is larger than that of the shavings.

Optionally, the tooth shape of each sickle tooth is the same, and the number of the sickle tooth sections is e; along the extending direction of the paving harrow roller, the adjacent E orientation pieces form a group, in each group, the following orientation piece rotates along the same direction of the circumference relative to the adjacent orientation piece in the frontAnd (3) mounting, wherein E is equal to 5 or 6, and E is equal to 2 or 3.

Optionally, the sickle teeth have a first tooth shape, and the first tooth shape is a hook shape and comprises a hook edge capable of poking shavings and a hook bottom edge connected with the hook edge; or the sickle teeth are provided with a second tooth form which is a U-shaped groove and comprises groove edges which are oppositely arranged and can be used for shifting shavings and groove bottom edges which are connected with the two groove edges.

Optionally, the sickle teeth have two tooth forms, and the sickle tooth segments with the two tooth forms are sequentially arranged along the periphery of the orientation sheet, and the number of the sickle tooth segments is 2 f; along the extending direction of the paving harrow roller, the adjacent F orientation pieces form a group, in each group, the following orientation piece rotates along the same direction of the circumference relative to the adjacent orientation piece in the frontAnd (3) mounting, wherein F is equal to 2 or 3, and F is equal to 3 or 4.

Optionally, the two tooth forms include a first tooth form and a second tooth form, the first tooth form is a hook form and includes a hook edge capable of shifting shavings and a hook bottom edge connected with the hook edge, and the second tooth form is a U-shaped groove and includes a groove edge capable of shifting shavings and a groove bottom edge connected with the groove edge, which are oppositely arranged.

Optionally, the orientation sheet comprises a large sheet and a small sheet, the large sheet having a larger diameter than the small sheet; the large piece and at least one small piece form a small group, and a plurality of small groups of the orientation pieces are sequentially arranged along the extending direction of the paving rake roller; or, one small piece and at least one large piece form a small group, and a plurality of small groups of the orientation pieces are sequentially arranged along the extending direction of the paving rake roller.

Optionally, one large piece and one small piece form a small group, a plurality of small groups of the orientation pieces are sequentially arranged along the extending direction of the paving rake roller, and the installation angle of each orientation piece in each small group is consistent.

Optionally, the teeth of the respective sickle teeth are identical, the number of the sickle tooth sections is E, and the adjacent E small groups are a large group along the extending direction of the paving harrow roller, and in each large group, the orientation pieces of the following small group rotate in the same circumferential direction relative to the orientation pieces of the preceding adjacent small groupC, mounting, wherein E is equal to 5 or 6, and E is equal to 2 or 3; or, the sickle teeth have two tooth forms, the sickle tooth sections with the two tooth forms are sequentially arranged along the periphery of the orientation piece, the number of the sickle tooth sections is 2F, the adjacent F small groups are arranged into a large group along the extension direction of the paving harrow roller, in each large group, the orientation piece of the following small group rotates along the same direction along the circumferential direction relative to the orientation piece of the preceding adjacent small groupAnd (3) mounting, wherein F is equal to 2 or 3, and F is equal to 3 or 4.

Optionally, an anti-rotation structure is arranged between the inner edge of each directional piece and the outer wall surface of the paving rake roller, and a first spacer is arranged between two adjacent directional pieces.

Optionally, the paving rake group can be a longitudinal paving rake group, and when the paving rake group is used as the longitudinal paving rake group, the distance between two adjacent directional sheets of the downstream paving rake is greater than that between two adjacent directional sheets of the upstream paving rake; or, from upstream to downstream, every C paving rakes are of one type, the distance between two adjacent directional sheets of each paving rake is the same in the same type, and the distance between two adjacent directional sheets of the downstream paving rake is larger than that of the upstream paving rake.

Optionally, from upstream to downstream, each of the rake surfaces is divided into three types, the distance between two adjacent directional sheets of the rake surface of the most upstream type is 24-28mm, the distance between two adjacent directional sheets of the rake surface of the most downstream type is 59-63mm, and the distance between two adjacent directional sheets of the rake surface of the middle type is 38-42 mm.

Optionally, a bulk material rake group is further arranged above the paving rake group, the bulk material rake group comprises a plurality of bulk material rakes, each bulk material rake comprises a bulk material rake roller and a plurality of roller pins mounted on the outer wall surface of the bulk material rake roller, and the distance between every two adjacent bulk material rakes is greater than the thickness of the shavings.

Optionally, the number of the bulk material rakes is the same as that of the paving rakes, and each bulk material rake is also divided into three types from upstream to downstream; the quantity of the most upstream type of the bulk material rakes is the same as that of the most upstream type of the paving rakes, and the bulk material rakes are arranged in a one-to-one correspondence manner; the quantity of the middle type of the bulk material rakes is the same as that of the middle type of the paving rakes, and the intermediate type of the bulk material rakes and the paving rakes are arranged in a one-to-one correspondence manner; the number of the most downstream type of the bulk material rakes is the same as that of the most downstream type of the paving rakes, and the bulk material rakes are arranged in a one-to-one correspondence manner; from upstream to downstream, the distance between two adjacent bulk material rakes of two adjacent bulk material rakes is gradually increased.

Optionally, the paving harrow can also be used as a transverse paving harrow, and when the paving harrow is used as the transverse paving harrow, the distance between two adjacent directional sheets of the paving harrow is gradually changed along the extending direction of the paving harrow roller; or, along the extending direction of the paving harrow roller, every D directional sheets of the paving harrow are of one type, the distance between every two adjacent directional sheets in the same type is the same, and the distance between every two adjacent directional sheets in each type of directional sheets gradually changes along the extending direction of the paving harrow roller.

Optionally, the orientation pieces of the paving rake are divided into three types from upstream to downstream, the distance between two adjacent orientation pieces of the most upstream type is 24-28mm, the distance between two adjacent orientation pieces of the most downstream type is 59-63mm, and the distance between two adjacent orientation pieces of the middle type is 38-42 mm.

Optionally, in the transverse direction, the rotation speed of the rake at the upper stage is greater than that of the rake at the adjacent lower stage, and the rotation direction of the rake at the lowest stage is opposite to that of each of the other rakes.

Optionally, the radial dimension of the orientation piece of the rake at the lowest level is greater than the orientation pieces of the other rake.

Optionally, the number of the paving heads is 7, and the paving heads include a first longitudinal paving head, a first transverse paving head, a second longitudinal paving head, a fine material paving head, a third longitudinal paving head, a second transverse paving head and a fourth longitudinal paving head along the running direction of the slab; the first longitudinal paving head, the second longitudinal paving head, the fine material paving head, the third longitudinal paving head and the fourth longitudinal paving head are all installed with the longitudinal paving rake group, and the first transverse paving head and the second transverse paving head are all installed with the transverse paving rake group.

Optionally, the direction of the transverse paving rake group of the first transverse paving head from the upper level to the lower level is opposite to that of the second transverse paving head.

Optionally, at least two of the longitudinal paving heads are in use.

Optionally, the paving harrow comprises a lifting mechanism for adjusting the height of the paving harrow group, and comprises a plurality of lifting units, wherein each lifting unit is arranged on the paving harrow frame at intervals along the circumferential direction, each lifting unit comprises a lifting component and a movable connecting rod, the lifting component is arranged on the frame of the part above the paving harrow group, the telescopic part of the lifting component can vertically displace, one end of the movable connecting rod is hinged with the telescopic part, and the other end of the movable connecting rod is hinged with the paving harrow frame.

Optionally, the lifting unit further comprises a guide assembly, the guide assembly comprises a first guide piece and a second guide piece, the first guide piece is vertically arranged, and the second guide piece is fixed to the paving rake rack; the second guide piece is in sliding fit with the first guide piece along the up-down direction so as to guide the lifting of the paving harrow group.

Optionally, one of the first guide member and the second guide member is provided with a slide rail, and the other is provided with a slide groove, and the slide rail is inserted into the slide groove and can slide in the slide groove.

Optionally, the second guide is equipped with the bar hole, and the connecting piece of peripheral hardware can pass the bar hole, in order to incite somebody to action the second guide is fixed in the harrow frame of mating formation, and is in through the adjustment connecting piece the downthehole position of bar can be adjusted the second guide is in the mounted position of harrow frame of mating formation.

Optionally, the lifting assembly comprises a driving member and a transmission member, and a driving shaft of the driving member is connected with an input shaft of the transmission member.

Optionally, the lower end of the telescopic part is connected with a first lifting lug and hinged to the upper end of the movable connecting rod through the first lifting lug.

Optionally, the device further comprises a controller and a monitoring component, wherein the monitoring component is used for monitoring the thickness information of the plate blank; the controller is in signal connection with the monitoring part and the driving part, and can receive the thickness information and control the starting and stopping of the driving part according to the thickness information so as to adjust the height of the paving rake rack.

Optionally, the number of the lifting units is four, and the four lifting units are arranged at four corners of the paving rake frame in a one-to-one correspondence manner.

Optionally, the upper part is a bulk rake.

Optionally, each of the paving heads includes a paving bin, an outlet end of the paving bin is provided with a blanking rake group, the blanking rake group includes a plurality of blanking rakes, each of the blanking rakes includes a blanking rake roller, the blanking rake roller is provided with a plurality of blanking sheets at intervals along an axial direction, each of the blanking sheets includes a plurality of blades arranged at intervals along a circumferential direction, each of the blades includes a handle portion and a head portion, and the head portion is mounted at an outer end of the handle portion and can incline toward a rotation direction relative to the handle portion.

Optionally, the lower material sheet further comprises an annular substrate, the inner end of the handle is fixed to the substrate, and the lower material sheet is mounted on the blanking rake roller through the substrate outer sleeve and can rotate synchronously with the blanking rake roller.

Optionally, one of the inner wall surface of the substrate and the outer wall surface of the blanking harrow roller is provided with a convex key extending along the axial direction, and the other one is provided with a key slot extending along the axial direction, and in an assembled state, the convex key can be inserted into the key slot.

Optionally, the central axis of the handle is perpendicular to the central axis of the discharging harrow roller, and forms an included angle with the radial direction of the discharging harrow roller.

Optionally, the number of the blades is three, and three blades are distributed at equal intervals in the circumferential direction.

Optionally, in the extending direction of the blanking harrow roller, the adjacent N lower material sheets form a group, and in each group, the rear blanking sheet rotates in the same direction along the circumferential direction relative to the front adjacent lower material sheetAnd (3) mounting, wherein N is equal to 3 or 4.

Optionally, a second spacer is arranged between two adjacent lower material sheets, and two ends of the second spacer respectively abut against the two adjacent lower material sheets.

Optionally, the second spacer has an axial length of 25-30 mm.

Optionally, the number of the discharging rakes is 6 or 7, the central axis of the discharging rake roller of each discharging rake is positioned on the same mounting surface, and the central axes of the discharging rake rollers are parallel to each other and arranged at equal intervals; from top to bottom, the mounting surface gradually inclines towards the front of the feeding direction, and the included angle between the mounting surface and the horizontal plane is 45-47 degrees.

Optionally, the paving bin further comprises a bin body, a conveying part is arranged at the bottom of the bin body and used for conveying the wood shaving material pile, a sweeping rake is arranged at the top of the bin body and used for sweeping the top of the wood shaving material pile, and an observation window is arranged on the side portion of the bin body.

Optionally, the number of the paving heads is 7, and the paving heads include a first longitudinal paving head, a first transverse paving head, a second longitudinal paving head, a fine material paving head, a third longitudinal paving head, a second transverse paving head and a fourth longitudinal paving head along the running direction of the slab.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a paving machine provided by the present invention;

FIG. 2 is a schematic view of a first longitudinal placement head;

fig. 3 is a schematic structural view of an embodiment of the paving rake group;

FIG. 4 is a partially enlarged view of two adjacent paving rakes;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a schematic view of an installation structure of an orientation piece;

FIG. 7 is a schematic view of the mounting structure of the rear orientation tab adjacent to the orientation tab of FIG. 6;

FIG. 8 is a schematic view of the mounting structure of the rear orientation tab adjacent to the orientation tab of FIG. 7;

FIG. 9 is a schematic view of the mounting structure of the rear orientation tab adjacent to the orientation tab of FIG. 8;

FIG. 10 is a schematic view of a bulk rake;

fig. 11 is a connecting structure diagram of the lifting mechanism and the paving rake group;

FIG. 12 is a partial view of FIG. 11 from a side view;

FIG. 13 is a connection structure view of the movable connecting rod, the first lifting lug and the transmission part;

FIG. 14 is a block diagram of a guide assembly;

FIG. 15 is a top view of FIG. 14;

FIG. 16 is a schematic structural view of a discharging rake;

fig. 17 is a schematic view of the mounting structure of a lower material sheet;

fig. 18 is a schematic view of the mounting arrangement of a rear lower web adjacent to the lower web in fig. 17;

fig. 19 is a schematic view of the mounting arrangement of a rear lower web adjacent to the lower web in fig. 18;

fig. 20 is a schematic structural view of one embodiment of the transverse paving rake set provided in the present invention;

FIG. 21 is a top view of FIG. 19;

fig. 22 is a connection structure diagram of two adjacent paving rakes in the transverse paving rake group.

The reference numerals in fig. 1-22 are illustrated as follows:

1 paving rake group, 11 paving rake rack, 12 paving rake, 121 paving rake roller, 122 orientation sheet, 122-1 large sheet, 122-2 small sheet, 122a sawtooth section, 122b sickle tooth section, 122b-1 hooked edge, 122b-2 hooked bottom edge, 122b-3 groove edge, 122b-4 groove bottom edge and 123 first spacer bush;

2, a lifting unit, a 21 lifting component, a 211 driving component, a 211a driving shaft, a 212 transmission component, a 212a telescopic part, a 212b sleeve, a 22 movable connecting rod, a 23 guide component, a 231 first guide piece, a 231a sliding rail, a 232 second guide piece, a 232a sliding chute, a 232b strip-shaped hole, a 24 first lifting lug and a 25 second lifting lug;

3 bulk cargo harrow groups, 31 bulk cargo harrow racks, 32 bulk cargo harrow, 321 bulk cargo harrow rollers and 322 roller pins;

4 blanking rake group, 41 blanking rake, 411 blanking rake roller, 411a key slot, 412 blanking sheet, 412a blade, 412a-1 handle, 412a-1a first handle edge, 412a-1b second handle edge, 412a-2 head, 412a-2a first head edge, 412a-2b second head edge, 412b base sheet, 412b-1 convex key and 413 second spacer sleeve;

5 a paving bin, a 51 bin body, a 52 transportation part and a 53 sweeping rake;

6, transversely paving the harrow groups;

7, a slab frame;

the method comprises the following steps of 1# first longitudinal paving head, 2# first transverse paving head, 3# second longitudinal paving head, 4# fine material paving head, 5# third longitudinal paving head, 6# second transverse paving head and 7# fourth longitudinal paving head;

s shaving a wood chip material pile.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

The terms "first", "second", and the like, as used herein are used for convenience only to describe two or more structures or components that are the same or similar in structure, and do not denote any particular limitation on the order.

The descriptions of "upstream", "downstream", etc. are based on the direction of travel of the slab, which may also be referred to as the longitudinal direction; the descriptions of "upper stage" and "lower stage" herein are merely for convenience of distinguishing directions, and do not indicate levels and meanings of subordinate or upper and lower functional stages, and the directions from the upper stage to the lower stage are actually horizontal with respect to the longitudinal direction; the front and rear directions of the "front" and "rear" in this document refer to the extending direction of the paving or blanking raking rolls, and may be the upstream to downstream direction (i.e. longitudinal direction) or the upstream to downstream direction (i.e. transverse direction) depending on the kind of the paving head used, while the front and rear directions refer to the upstream to downstream direction (i.e. transverse direction) in the case of the blanking raking rolls.

Referring to fig. 1-10, fig. 1 is a schematic structural view of an embodiment of a paving machine provided by the present invention, fig. 2 is a schematic structural view of a first longitudinal paving head, fig. 3 is a schematic structural view of an embodiment of a paving rake group, fig. 4 is a partial enlarged view of two adjacent paving rakes, fig. 5 is a side view of fig. 4, fig. 6 is a schematic structural view of an installation structure of a directional blade, fig. 7 is a schematic structural view of an installation structure of a rear directional blade adjacent to the directional blade in fig. 6, fig. 8 is a schematic structural view of an installation structure of a rear directional blade adjacent to the directional blade in fig. 7, fig. 9 is a schematic structural view of an installation structure of a rear directional blade adjacent to the directional blade in fig. 8, and fig. 10 is a schematic structural view of a scattering rake.

As shown in fig. 1 and 2, the invention provides a paving machine, which comprises a plurality of paving heads, each paving head comprises a paving bin 5, each paving bin 5 is equivalent to a storage bin of the paving machine and comprises a bin body 51, a transportation part 52 is arranged at the bottom of the bin body 51, and the transportation part 52 can be an on-line transportation device such as a belt conveyor and the like generally and is used for transporting a wood shaving material stack S.

The top of storehouse body 51 can be equipped with sweeps flat harrow 53, sweeps flat harrow 53 and can adopt the chain to drag the harrow body of broach form to adopt and carry out the level with the mode of wood shavings windrow S motion direction reverse motion to the top of wood shavings windrow S and comb flat, make the cross-section of wood shavings windrow S in the paving storehouse 5 can maintain for the rectangle, be favorable to the control to the unloading volume, and then guarantee to stabilize the unloading. The side of the bin 51 may be provided with a viewing window to view the accumulation of the stack S of shaving material in the bin 51.

With reference to fig. 3-5, the paving machine further comprises a paving rake group 1, a slab frame 7 is arranged below the paving rake group 1 and used for supporting the operation of a slab, the paving rake group comprises a plurality of paving rakes 12, each paving rake 12 comprises a paving rake roller 121 and a plurality of directional pieces 122 sleeved on the paving rake roller 121, each paving rake roller 121 is connected with a driving piece in the form of a motor and the like so as to rotate under the action of the driving piece, and then the directional pieces 122 arranged on the paving rake rollers 121 drive shavings to be paved.

Different from the prior art, the outer periphery of the directional plates 122 is provided with a saw tooth section 122a and a sickle tooth section 122b, the saw tooth section 122a can generate dragging force for the wood shavings to move between two adjacent directional plates 122 for blanking, the sickle tooth section 122b can generate poking force for the wood shavings to move to the adjacent paving harrow, and the dragging force is greater than the poking force.

With this structure, when the shavings fall to the paving harrow 12, since the dragging force of the sawtooth section 122a is greater than the dragging force of the sickle section 122b, the sawtooth section 122a will act preferentially to drag the shavings between the two orientation pieces 122 for blanking; and if the sawtooth section 122a can not drag the shavings to carry out normal unloading between two directional pieces 122 because of reasons such as the shavings size is too big, the shavings smoothness is poor, the faller section 122b can produce the power of dialling of equidirectional to the shavings to stir this shavings that can not unload to adjacent harrow 12 of mating formation, and then can avoid the putty to a great extent, be favorable to guaranteeing the continuity of production.

In a specific embodiment, the number of the sawtooth sections 122a may be multiple, each sawtooth section 122a may be distributed at equal intervals along the circumferential direction, and a sickle section 122b may be disposed between two adjacent sawtooth sections 122a, that is, the number of the sawtooth sections 122a and the sickle section 122b may be the same. Therefore, in the process that the orientation piece 122 rotates for a circle, the alternate actions of dragging and shifting for multiple times can be output so as to continuously change the acting force direction of the wood shavings, thereby not only being beneficial to smooth feeding of the wood shavings, but also avoiding material blockage to a greater extent.

As described above, the dialing effect of the sickle tooth section 122b needs to be weaker than that of the saw tooth section 122a, that is, the dragging action of the saw tooth section 122a should have priority, and for this reason, the length of the sickle tooth section 122b may be set to be smaller than that of the saw tooth section 122a, and specifically, the length of the sickle tooth section 122b may be set to be about half of that of the saw tooth section 122a, so as to cut down the dialing power generated by the sickle tooth section 122 b. The length of the saw tooth section 122a may be greater than the length (average length) of the shavings to continuously generate drag force for the shavings, so that the shavings can be more smoothly fed and laid.

The sickle tooth section 122b may comprise at least one sickle tooth, and it will be appreciated that the sickle tooth section 122b acts primarily on the strands to change their direction of movement, which does not require a constant driving force for the strands. Therefore, the number of the sickle teeth included in one sickle tooth section 122b is not required to be too large, and in the embodiment of the present invention, as shown in fig. 3, one sickle tooth section 122b may include only one sickle tooth, and the length of the sickle tooth may be larger than the width (average width) of the wood shavings, so as to better stir the wood shavings, under the action of which the wood shavings will be separated from the orientation piece 122 of the current paving rake 12 and overlap the orientation piece 122 of the adjacent paving rake 12, and during the rotation of the two paving rakes 12, the wood shavings will be smoothly transferred to the adjacent paving rake 12 for blanking.

The paving rake 1 can be used as a longitudinal paving rake, in which case the paving rake rollers 121 of each paving rake 12 can be substantially perpendicular to the travel direction of the slab to perform longitudinal paving. When the paving harrow is used as a longitudinal paving harrow group, the axial distance between the adjacent two orientation sheets 122 of the downstream paving harrow 12 and the upstream paving harrow 12 can be different, and the closer to the downstream in the rotating direction, the larger the distance between the adjacent two orientation sheets 122 of the paving harrow 12 can be, so that the difficult-to-feed wood shavings conveyed by the upstream paving harrow 12 can be fed smoothly at the downstream.

The distance between two adjacent directional sheets 122 can be controlled by the first spacer 123, and when the device is installed, two ends of the first spacer 123 can respectively abut against the two adjacent directional sheets 122, so as to limit the installation positions and the distance between the two directional sheets 122; the radius of the orientation tab 122 minus the thickness of the first spacer 123 is the depth of the orientation tab 122, which should be greater than or close to the average length of the strands.

In one embodiment, in two adjacent paving rakes 12, the distance between two adjacent directional sheets 122 of the downstream paving rake 12 may be greater than the distance between two adjacent directional sheets 122 of the upstream paving rake 12, that is, from upstream to downstream, the distance between two adjacent directional sheets 122 of each paving rake 12 may gradually increase, and if the shavings cannot be smoothly fed, the shavings will be gradually conveyed to the further downstream paving rake 12 for feeding.

In another alternative, from upstream to downstream, every C rake 12 can be classified into one type, for example, the number of rake is X, which can include X/C (if not an integer, the tail can be removed or the round can be performed by the next method); in the same type, the distance between two adjacent directional sheets 122 of each paving rake 12 may be the same, and in the two adjacent types, the distance between two adjacent directional sheets 122 of the downstream type of paving rake 12 may be greater than the distance between two adjacent directional sheets 122 of the upstream type of paving rake 12.

Comparatively speaking, the smooth unloading of wood shavings that the upper reaches conveying comes can all be realized to above-mentioned two kinds of schemes, and the latter scheme, the harrow 12 of mating formation that two adjacent directional slices 122 intervals are the same can be a plurality of, and these a plurality of harrow 12 of mating formation can be adjacent, can get rid of the putty problem that non-wood shavings size reason leads to the great extent, and then can carry out the hierarchical unloading to the wood shavings better to guarantee the smoothness of wood shavings unloading process as far as possible.

As shown in fig. 3 and 4, the orientation pieces 122 of two adjacent paving rakes 12 can be arranged in an alternating manner, that is, one orientation piece 122 of one paving rake can be inserted between two adjacent orientation pieces 122 of the other paving rake, so that the axial gap between the mutually-inserted orientation pieces 122 of the two paving rakes 12 is the effective gap through which the shavings can pass.

Specifically, the paving rakes 12 as the longitudinal paving rake group 1 can be classified into three types: the spacing between adjacent directional sheets 122 of the most upstream paving rake 12 can be minimum, which is used for allowing the wood shavings with smaller width to pass through, the spacing between two adjacent directional sheets 122 can be set to be 24-28mm, and taking the thickness of the directional sheet 122 as 2mm as an example, the effective gap of the paving rake 12 is 11-13 mm; the spacing between two adjacent directional sheets 122 of the most downstream paving rake 12 is the largest for allowing the wood shavings with larger width to pass through, the spacing between two adjacent directional sheets 122 can be set to 59-63mm, and the effective gap of the paving rake 12 can be 28.5-30.5 mm; the paving harrow 12 in the middle is used for the medium-sized wood shavings to pass through, the distance between two adjacent directional sheets 122 can be set to be 38-42mm, and the effective gap of the paving harrow 12 is 18-20 mm.

It is to be understood that the above description of the three types of paving rakes 12 and the gaps between the adjacent directional plates 122 of the three types of paving rakes 12 is only an exemplary description of the embodiment of the present invention, and it is not intended to limit the scope of the paving rake set provided by the present invention; in practical applications, the rake 12 can be divided into four or more types, and the gaps between the orientation plates 122 can be changed according to the size of the incoming wood shavings.

An anti-rotation structure can be arranged between the inner edge of each directional piece 122 and the outer wall surface of the paving harrow roller 121, so as to ensure that the directional pieces 122 and the paving harrow roller 121 can rotate synchronously.

In an embodiment, the cross section of the matching section of the paving rake roller 121 and the directional piece 122 may be set to be non-circular, such as oval, square, oval (plan in the drawings) and the like, and correspondingly, the inner hole of the directional piece 122 may be set to be non-circular hole matching with the paving rake roller 12, such as oval hole, square hole, oval hole (plan in the drawings) and the like, so that when the directional piece 122 is sleeved on the paving rake roller 121, the two will not rotate synchronously.

In another embodiment, one of the inner wall surface of the orientation piece 122 and the outer wall surface of the paving harrow roller 121 may be provided with a key portion extending along the axial direction, and the other may be provided with a groove portion extending along the axial direction, and in an assembled state, the key portion may be inserted into the groove portion, and the synchronous rotation of the orientation piece 122 and the paving harrow roller 121 can also be ensured.

In this embodiment, the number of the key portions and the groove portions is not limited, and both the number may be one or more. In the case of a plurality of the rake rollers 121, the installation positions of the two are required to be matched, so that the keys can be correspondingly inserted into the corresponding grooves, and in the case of a plurality of the rake rollers, the inner hole wall of the orientation piece 122 and the outer wall surface of the paving rake roller 121 can be provided with the keys and the grooves at the same time.

In each of the above solutions, the saw tooth segments 122a are circumferentially and equally spaced, the sickle tooth segments 122b are disposed between two adjacent saw tooth segments 122a, and taking 6 sickle tooth segments 122b as an example, after one sickle tooth segment 122b contacts with the shavings, the next sickle tooth segment 122b contacts with the shavings, and the paving rake roller 121 is required to rotate 60 degrees, so if it is ensured that the sickle tooth segments 122b can timely stir the jammed shavings, the paving rake roller 121 is required to have a larger rotation speed, and the larger rotation speed is not beneficial to smooth paving of the shavings longitudinally or transversely, and may cause the shavings to penetrate into the slab vertically, which affects the final quality of the shaving board.

In view of the above, the present invention provides a solution that each directional plate 122 is installed along the extending direction of the paving harrow roller 121 in a staggered manner in the circumferential direction, so as to reduce the requirement of high rotation speed for the paving harrow roller 121. At this time, the description of the respective cases can be made according to whether the sizes of the respective orientation pieces 122 on the paving rake roller 121 are the same.

In the first case, the dimensions of the orientation pieces 122 may be the same, and in this case, the description may be further distinguished according to whether the sickle-tooth shapes of the sickle-tooth segments 122b are the same:

1) when the sickle teeth are identical, the adjacent saw tooth segments 122a and 122b can be combined into an equal segment. Setting the number of the sickle-tooth segments 122b to E, along the extending direction (i.e. the front and back direction) of the paving rake roller 121, the adjacent E orientation pieces 122 can be grouped into one group, and in each group, the following orientation piece 122 can rotate along the same circumferential direction (both clockwise or counterclockwise) relative to the preceding adjacent orientation piece 122And (3) mounting, wherein E is equal to 5 or 6, and E is equal to 2 or 3.

Taking E-6 and E-2 as an example, the sickle tooth section 122b may include six sections, two adjacent orientation pieces 122 may be grouped together, and two adjacent orientation pieces 122 may be installed at an offset of 30 degrees in the circumferential direction. Along the extension direction (from front to back) of the paving rake 121, each orientation piece 122 can be numbered: 1. 2, 3 … (2n +1), (2n +2) …, where n is a natural number greater than 0, in the above installation manner, the 1 st directional slice 122 may have the same installation angle as the (2n +1) th directional slice 122, for convenience of description, this part of directional slices 122 may be referred to as a type of directional slice, the second directional slice 122 may have the same installation angle as the (2n +2) th directional slice 122, and this part of directional slices 122 may be referred to as a type of directional slice; in the rotating process of the paving rake roller 121, after the sickle tooth section 122b of the first-class directional blade 122 is contacted with the wood shavings, the second-class blanking blade 122 can rotate to the position of the sickle tooth section 122b of the previous-class directional blade 122 for position supplement only by rotating 30 degrees, that is, the paving rake roller 121 only needs to rotate 30 degrees, the sickle tooth section 122b can act on the wood shavings, and compared with the scheme that all the directional blades 122 are installed along the same angle, the requirement on the rotating speed of the paving rake roller 121 can be reduced by half, and further the energy consumption can be greatly reduced.

In this arrangement, the sickle teeth may have a first tooth shape, which may be a hook shape including a hook edge 122b-1 capable of moving shavings downstream and a hook bottom edge 122b-2 connected to the hook edge 122 b-1. referring to fig. 4, the hook edge 122b-1 may extend substantially in a radial direction of the orientation piece 122, and the hook bottom edge 122b-2 may extend in a rotational direction relative to the hook edge 122b-1, such that the hook edge 122b-1 may move shavings downstream when the orientation piece 122 rotates; alternatively, the sickle tooth may have a second tooth shape, which may be a U-shaped slot, including two opposite slot edges 122b-3 for allowing the shavings to be shifted and a slot bottom edge 122b-4 connecting the two slot edges 122 b-3. since the second tooth shape has two opposite slot edges 122b-3, one slot edge 122b-3 allows the shavings to be shifted regardless of the direction in which the orientation plate 122 rotates.

It is to be understood that the above description of the first tooth form and the second tooth form is only an exemplary description of the embodiment of the present invention, and it is not intended to limit the scope of the paving machine provided by the present invention, and the sickle tooth section 122b may be configured with other tooth forms as long as the relevant functions are satisfied.

2) When the shapes of the sickle teeth are different, taking the presence of the first tooth-shaped sickle tooth section 122b and the second tooth-shaped sickle tooth section 122b as an example, the sickle tooth sections 122b with the two tooth shapes can be sequentially arranged along the periphery of the orientation sheet 122, and the number of the sickle tooth sections 122b is set to be 2f, wherein f sickle tooth sections 122b with the first tooth shape and the second tooth shape are respectively provided; in the extending direction of the paving rake 121, the adjacent F orientation pieces 122 can be in a group, and in each group, the following orientation piece 122 can rotate along the same direction in the circumferential direction relative to the adjacent orientation piece 122 in the frontAnd (3) mounting, wherein F is equal to 2 or 3, and F is equal to 3 or 4.

Taking F-3 and F-4 as an example, there are six sickle tooth segments 122b, three of which 122b have a first tooth shape, and the other three sickle tooth segments 122b have a second tooth shape, refer to fig. 6-9, fig. 7 is the adjacent directional plate 122 at the back of fig. 6, fig. 8 is the adjacent directional plate 122 at the back of fig. 7, fig. 9 is the adjacent directional plate 122 at the back of fig. 8, fig. 6-9 show exactly one group of adjacent directional plates 122, the directional plate 122 in fig. 7 is mounted by rotating 30 degrees counterclockwise corresponding to the directional plate 122 in fig. 6, the directional plate 122 in fig. 8 is mounted by rotating 30 degrees counterclockwise corresponding to the directional plate 122 in fig. 7, and the directional plate 122 in fig. 9 is mounted by rotating 30 degrees counterclockwise corresponding to the directional plate 122 in fig. 8.

Along the extension direction (from front to back) of the paving rake 121, each orientation piece 122 can be numbered: 1. 2, 3, 4 … (4n +1), (4n +2), (4n +3), (4n +4) …, where n is a natural number greater than 0, the 1 st directional piece 122 may have the same installation angle as the (4n +1) th directional piece 122 in the above-described installation manner, and for convenience of description, this portion of the directional tabs 122 may be referred to as a type of directional tab, the 2 nd directional tab 122 may have the same installation angle as the (4n +2) th directional tab 122, this portion of the directional tabs 122 may be referred to as a second type of directional tabs, the 3 rd directional tab 122 may have the same installation angle as the (4n +3) th directional tab 122, this part of the alignment tabs 122 may be referred to as three types of alignment tabs, the 4 th alignment tab 122 may have the same installation angle as the (4n +4) th alignment tab 122, and this part of the alignment tabs 122 may be referred to as four types of alignment tabs; in the rotation process of the paving rake roller 121, after the sickle tooth section 122b of the first-class directional blade 122 contacts with the shavings, the second-class blanking blade 122 can rotate to the position of the sickle tooth section 122b of the previous-class directional blade 122 for position compensation only by rotating 30 degrees, and similarly, after the sickle tooth section 122b of the second-class directional blade (the third-class directional blade) contacts with the shavings, the third-class directional blade (the fourth-class directional blade) can perform position compensation only by rotating 30 degrees, that is, the sickle tooth section 122b acts on the shavings every 30 degrees of rotation of the paving rake roller 121, compared with the scheme that the directional blades 122 are installed at the same angle, the requirement on the rotation speed of the paving rake roller 121 can be greatly reduced, and further, the energy consumption can be reduced.

Actually, the same mounting manners are adopted in 2) and 1), and the rear directional blade 122 is sequentially mounted on the same paving harrow roller 121 along the same direction by rotating 30 degrees relative to the front adjacent directional blade 122, and the difference lies in that the tooth form of each sickle tooth section 122b in the embodiment of 2) can be different, and the above description takes the example of the existence of two tooth forms as an example, in fact, three or more different tooth forms can exist, but in consideration of the difficulty of processing and mounting, in the embodiment of the invention, the scheme of two tooth forms or only one tooth form is preferably adopted.

In the second case, as shown in fig. 4 and 5, the orientation tab 122 may include a large tab 122-1 and a small tab 122-2, the large tab 122-1 having a larger diameter than the small tab 122-2. During assembly, one large piece 122-1 and at least one small piece 122-2 can form a small group, and a plurality of small group orientation pieces 122 can be sequentially arranged along the extending direction of the paving rake roller 121; alternatively, one small piece 122-2 and at least one large piece 122-1 may be formed into a small group, and a plurality of small groups of orientation pieces 122 may be sequentially formed along the extending direction of the paving rake 121.

In each group, the installation angles of the orientation pieces 122 can be consistent, and due to the staggered arrangement of the large and small orientation pieces 122 in the group, the sawtooth sections 122a of the orientation pieces 122 can act on different positions of the wood shavings to generate acting forces with different sizes and different directions, so that the wood shavings are forced to change the motion track, the wood shavings can be more easily dragged to the gap between the orientation pieces 122, and the blanking and the paving can be smoothly carried out along the gap.

In the embodiment of the present invention, a small group of the large piece 122-1 and the small piece 122-2 may be adopted to facilitate installation, and specifically, the description may be distinguished according to whether the tooth profiles are the same: 1) the teeth of the sickle teeth are the same, the number of the sickle tooth sections 122b can be set to be E, the adjacent E small groups can be a large group along the extending direction of the paving harrow roller 121, in each large group, the orientation pieces 122 of the small group at the back rotate along the same circumferential direction relative to the orientation pieces 122 of the adjacent small group at the frontC, mounting, wherein E is equal to 5 or 6, and E is equal to 2 or 3; 2) the sickle teeth can have two tooth forms, and the sickle tooth sections 122b with the two tooth forms can be sequentially arranged along the periphery of the orientation piece 122, the number of the sickle tooth sections 122b can be set to be 2F, along the extending direction of the paving harrow roller 121, the adjacent F subgroups are a large group, in each large group, the orientation piece 122 of the following subgroup rotates along the same circumferential direction relative to the orientation piece 122 of the preceding adjacent subgroupIn the case of an angled mounting, where F is equal to 2 or 3 and F is equal to 3 or 4, the sickle-tooth segment 122b can likewise have more than two tooth forms in the above-described embodiment.

In each of the above-described embodiments in which the orientation plates 122 are circumferentially offset from each other, the number of sickle tooth segments 122b on the periphery of the orientation plate 122 is preferably substantially 4-6, but may be a greater number or a lesser number. The fewer the number of the sickle tooth sections 122b, the fewer the functions which can be realized by rotating the orientation piece 122 for one circle, and at this time, the more the orientation piece 122 is installed in a staggered manner to make up for the defect, but the installation difficulty of the orientation piece 122 is increased; the greater the number of sickle-tooth segments 122b, the greater the difficulty of manufacturing the orientation plate 122.

In actual operation, the rotating speed of each paving rake 12 can be regulated, and according to the movement direction of the paving slab, the paving rake 12 which is firstly contacted with the wood shavings can be slowest in speed, and the paving rake 12 which is finally contacted with the wood shavings can be fastest in speed, so that the wood shavings on the paving rakes 12 can be paved nearly simultaneously.

With reference to fig. 2 and fig. 10, a bulk material rake group 3 may be further disposed above the paving rake group 1, and includes a bulk material rake frame 31 and a plurality of bulk material rakes 32, each bulk material rake 32 may include a bulk material rake roller 321 and a plurality of roller pins 322 mounted on an outer wall of the bulk material rake roller 321, and through the action of each bulk material rake 32, incoming materials of the feeding rake group 4 can be better spread, which is favorable for smooth feeding of the paving rake group 1.

Specifically, the number of the rake 32 may be the same as the number of the paving rake 12, and the distance between two adjacent rake 32 (the distance between the two roller pins 322 when the roller pins 322 of the two rake 32 are opposite to each other) may be greater than the thickness of the shavings, and the axial gap between the two roller pins 322 of the same rake 32 may be greater than the width of the shavings, and the length may also be greater than the width of the shavings, so as to facilitate the passing of the shavings.

In order to adapt to the arrangement of the three types of paving rakes 12, from upstream to downstream, each bulk rake 32 can be divided into three types: the quantity of the most upstream type of bulk material rakes 32 can be the same as that of the most upstream type of paving rakes 12 and are arranged in a one-to-one correspondence manner; the quantity of the most downstream type bulk material rakes 32 can be the same as that of the most downstream type paving rakes 12 and are arranged in a one-to-one correspondence manner; the quantity of the middle bulk material rakes 32 can be the same as that of the middle paving rakes 12 and are arranged in a one-to-one correspondence manner; and the distance between two adjacent bulk cargo rakes 32 of two adjacent bulk cargo rakes 32 is gradually increased from the upstream to the downstream. So set up, be more favorable to the hierarchical unloading of wood shavings to improve the smoothness of unloading as far as possible.

The paving rake group 1 referred to in the above description is actually mainly a longitudinal paving rake group with the view point of fig. 3, and the distance between two adjacent directional plates 121 of the downstream paving rake 12 can be larger than the distance between two adjacent directional plates 121 of the upstream paving rake 12, so as to adapt to the arrangement form of the bulk material rake group 3 from upstream to downstream. However, when the paving rake group 1 is used as the transverse paving rake group 6, the longitudinal paving rake group cannot be directly rotated by ninety degrees for installation and use.

Therefore, when the paving rake group 6 is used, the structure of the paving rake 12 needs to be changed, specifically refer to fig. 20-22, fig. 20 is a schematic structural view of an embodiment of the horizontal paving rake group provided in the present invention, fig. 21 is a top view of fig. 19, and fig. 22 is a structural view of the connection between two adjacent paving rakes in the horizontal paving rake group.

As shown in fig. 20 to 22, unlike the arrangement of the two adjacent directional sheets 122 of the adjacent rake 12 with different pitches in the longitudinal paving rake group, in the transverse paving rake group 6, the pitch between the two adjacent directional sheets 122 of each paving rake 12 gradually changes (increases or decreases) along the extending direction of the paving rake roller 121; or, along the extending direction of the paving rake roller 121, every D directional sheets 122 of each paving rake 12 are of the same type, and in the same type, the distance between two adjacent directional sheets 122 is the same, and the distance between two adjacent directional sheets 122 of each type of directional sheet 122 gradually changes (increases or decreases) along the extending direction of the paving rake roller 121, so as to be adapted to the grading and screening of the shavings by the bulk material rake group 6 above, and further, the grading and blanking can be performed in the longitudinal direction, so that the blocking can be avoided to a greater extent.

Here, the embodiment of the present invention does not limit whether the distance between two adjacent directional sheets 122 of each paving rake 12 along the extending direction of the paving rake roller 121 is gradually increased or gradually decreased, and is particularly related to the arrangement form of the upper blanking part (mainly the bulk material rake group 3); taking the gradual increase as an example, the embodiment of the present invention also does not limit the increase range of the distances between two adjacent directional sheets 122, which may be an equal increase, that is, the next distance is increased by a specific value compared to the previous distance, or an equal increase, that is, the ratio of the next distance to the previous distance is a specific value, or other irregular increase manners.

For convenience of description, the extending direction of the paving rake rollers 121 of the transverse paving rake group 6 can be replaced by the upstream to downstream direction during the running of the slab. In one embodiment, as shown in fig. 21, the directional plates 122 of each paving rake 12 can be divided into three types from upstream to downstream, the spacing between two adjacent directional plates 122 of the upstream-most type can be 24-28mm, the spacing between two adjacent directional plates 122 of the downstream-most type can be 59-63mm, and the spacing between two adjacent directional plates 122 of the middle type can be 38-42 mm.

It should be understood that the above description of the classification of the directional blades 122 of the paving rake roller 12 and the distance between two adjacent directional blades 122 in each classification is only a preferred solution of the embodiment of the present invention, and it does not represent a limitation to the implementation range of the transverse paving rake group 6 provided by the present invention; the orientation plates 122 of the paving rake 12 may be divided into more or less groups, and the distance between adjacent orientation plates 122 in each group may be reset.

To horizontal paving harrow group 6, the harrow 12 rotation in-process of mating formation, material (wood shavings) except can carry out the unloading between adjacent two directional piece 122, still can receive the stirring of pivoted directional piece 122, and this kind of stirring can make the wood shavings move to the adjacent harrow 12 department of mating formation of lower level, leads to the wood shavings to gather in the harrow 12 department of mating formation of lowest level easily, and then influences the homogeneity of horizontal thickness of mating formation. With the view of fig. 20, as in the prior art, material accumulation tends to occur at the leftmost side, resulting in a laterally thick left side and a laterally thin right side.

In contrast, in the embodiment of the present invention, a scheme of adjusting the rotation speed is adopted, please refer to fig. 20, and the rotation speed of the rake 12 at the upper stage may be greater than the rotation speed of the rake 12 at the adjacent lower stage along the horizontal direction, that is, the rotation speed (angular speed) of each rake 12 may be slower and slower from the upper stage to the lower stage, it can be understood that the smaller the angular speed of each rake 12 is, and the smaller the shifting force and shifting distance of the directional piece 122 of the corresponding rake 12 to the lower stage generated by the shavings are, so as to reduce the aggregation of the shavings to the rake at the lower stage, and be more beneficial to ensuring the uniformity of the horizontal paving thickness.

In addition, the rotation direction of the paving harrow 12 at the lowest level can be set to be opposite to the rotation direction of other paving harrow 12, so that materials which are stirred by the paving harrow 12 at the upper level can be stirred reversely, the paving range of the transverse paving harrow group 6 at the position of the paving harrow 12 at the lowest level can be avoided, and the loss of the materials can be reduced. Meanwhile, the reverse stirring can also stir the incoming materials of the upper paving harrow 12 to the transverse middle position, and can also avoid the aggregation of the materials at the lowest paving harrow to a certain extent, so as to achieve the effect of uniform paving thickness.

Specifically, a driving member in the form of a driving motor or the like may be provided for each paving harrow 12, so as to control the rotation speed and the rotation direction of each paving harrow 12 by adjusting the gear and the rotation direction of the driving member; alternatively, only one or more driving members may be provided, and then the rotation speed and the rotation direction of each paving rake 12 are adjusted by a speed reducing mechanism such as a parallel shaft gear engaged with the driving members.

Further, the radial dimension of the orientation piece 122 of the rake 12 at the lowest level can be adjusted to be larger than the radial dimension of the orientation pieces 122 of the other rake 12. Thus, the outer edge of the orientation piece 122 of the lowest paving harrow 12 can have a greater linear speed than the adjacent paving harrow 122, so as to improve the reverse stirring effect of the lowest paving harrow 12, and reduce the aggregation of materials at the lowest paving harrow 12 to a greater extent, and the phenomenon of uneven transverse paving thickness caused by the aggregation. The specific size of the orientation piece 122 of the lowest rake 12 and the radial size increase value of the orientation piece 122 relative to each of the other rake 12 are not limited herein, and those skilled in the art can determine the specific size and radial size increase value according to the related simulation calculation.

Referring to fig. 11-15, fig. 11 is a connection structure diagram of the lifting mechanism and the paving harrow plate, fig. 12 is a partial view of fig. 11 in a side view, fig. 13 is a connection structure diagram of the movable connecting rod, the first lifting lug and the transmission member, fig. 14 is a structure diagram of the guide assembly, and fig. 15 is a top view of fig. 14.

As shown in fig. 11 and 12, the paving machine of the present invention further includes a lifting mechanism for adjusting the height of the paving harrow 1, the paving harrow 1 includes a paving harrow frame 11 and a plurality of paving harrow 12 arranged on the paving harrow frame 11, the lifting mechanism includes a plurality of lifting units 2, each lifting unit 2 is circumferentially installed on the paving harrow frame 11 at intervals, and each lifting unit 2 includes a lifting assembly 21 and a movable connecting rod 22.

The lifting component 21 is mounted on the frame of the upper part of the paving rake group 1, the upper part can be the paving rake group 3 for the paving machine provided with the paving rake group 3, correspondingly, the lifting component 21 can be mounted on the paving rake frame 31, and the upper part can be the transportation component 52 for the paving machine not provided with the paving rake group 3, correspondingly, the lifting component 21 can be mounted on the frame of the transportation component 52; the lifting assembly 21 comprises a telescopic part 212a, the telescopic part 212a can be displaced in the vertical direction, one end of the movable connecting rod 22 is hinged with the telescopic part 212a, and the other end is hinged with the paving rake rack 11. The above-mentioned "vertical" means a direction perpendicular to the horizontal plane, i.e., an up-down direction.

By adopting the structure, the lifting component 21 of each lifting unit 2 is provided with the telescopic part 212a, and the telescopic part 212a moves vertically, so that the paving rake rack 11 can be driven to lift through the movable connecting rod 22, and further the distance between the paving rake group 1 and a slab (not shown in the figure) can be adjusted to adapt to the production of slabs with different thicknesses; moreover, through this elevating system, can be with the distance control of mating formation between harrow group 1 and the slab at minimum for the material (wood shavings etc.) arrives the surface of slab through minimum movement distance after throwing out from harrow group 1 of mating formation, reduces the influence that factors such as windage, gravity spread to the material to a great extent, more is favorable to guaranteeing the ride comfort when the material is mated formation, and then can guarantee the intensity of production shaving board.

More importantly, the lifting component 21 is not directly connected with the paving rake rack 11, but is switched through by the movable connecting rod 22, and the movable connecting rod 22 hinged at two ends can absorb the installation errors of the lifting mechanism and the paving rake group 1 and other equipment so as to ensure the leveling effect; in practical operation, the extension part 212a which linearly moves along the vertical direction can adjust the paving rake rack 11 to be inclined through the hinged movable connecting rod 22 so as to meet the blanking requirements of different parts of the plate blank.

It can be understood that if the telescopic parts 212a are directly fixed or hinged to the paving rake frame 11, the distance between two adjacent telescopic parts 212a is determined, which cannot realize the inclined arrangement of the paving rake frame 11. The present invention adopts a scheme of switching through the movable connecting rods 22 hinged at both ends, so as to solve the above problems well, and to realize the inclined arrangement of the paving rake frame 11 under the condition that the distance between the two adjacent telescopic parts 212a is not changed; even in the leveling process, the adoption of the scheme can also prevent the leveling clamping stagnation caused by installation errors, and is more favorable for ensuring the leveling effect.

For the rake rack 11 of mating formation that the slope set up, the incline direction of the rake rack 11 of mating formation is relevant with the direction of mating formation of slab, if use the direction of operation of slab to be the fore-and-aft direction, and the low reaches of slab operation be preceding, then can set up the rake rack 11 of mating formation to be by the forward tilt up gradually of back to in-process material thickness that increases gradually on the slab. Here, the inclination angle of the rake rack 11 is not limited in the embodiment of the present invention, and in the specific implementation, a person skilled in the art can set the inclination angle according to parameters such as the slab running speed and the thickness.

The lifting assembly 21 may include a driving member 211 and a transmission member 212, the driving member 211 may be a motor, a driving shaft 211a of the driving member 211 may be connected to an input shaft of the transmission member 212, and an output portion of the transmission member 212 is the aforementioned telescopic portion 212a, and is configured to output a lifting force to the paving rake frame 11.

In a first embodiment, the transmission member 212 may be a combination of a worm gear and a rack gear, referring to fig. 12, the driving member 211 is mounted on the rake frame 31, the driving shaft 211a thereof may extend substantially in a horizontal direction, the worm may be coaxially connected to the driving shaft 211a, the worm gear may be engaged with the worm to convert the rotation in the horizontal direction into the rotation in a vertical direction, and then the rotation may be changed into the horizontal direction again by the cooperation of one or more pairs of helical gears and spur gears, and finally the lifting force may be output through the rack gear; the outer periphery of the rack may be provided with a sleeve 212b to protect it.

In the above structure, the rack is the telescopic part 212a, and through the worm gear, the helical gear, the spur gear and the final gear-rack transmission which are engaged with each other, not only can the direction of the rotating force output by the driving shaft 211a be changed, but also a better speed reduction effect can be achieved, so as to control the lifting of the paving rake frame 11 more accurately.

In a second embodiment, the transmission member 212 may be a combination structure of a worm and a worm wheel and a lead screw, the driving member 211 may be similar to the first embodiment in structure and arrangement, the worm may be coaxially connected to the driving shaft 211a, the worm wheel may be engaged with the worm to convert a rotation direction, a polished rod segment of a lead screw of the lead screw may be fixed to the worm wheel, so that the lead screw may rotate synchronously with the worm wheel, and a lead screw nut may be sleeved on the threaded segment of the lead screw, and when the lead screw rotates, the lead screw nut may output a lifting force.

In this embodiment, the screw nut may be fixed to the worm wheel, or an internal thread may be provided on an inner wall of the worm wheel to use the worm wheel as the screw nut, and then the screw thread of the screw thread is installed in the screw nut.

In the third embodiment, the driving member 211 may be a torque motor, which has the characteristics of low rotation speed, large torque, fast response, etc., the motor may not be provided with an excessive speed reduction structure, the transmission member 212 may be directly a transmission structure of a gear and a rack, the gear may be fixed to the driving shaft 211a, and the rack may be engaged with the gear and output the lifting force to the outside.

The three embodiments can achieve the purpose of adjusting the height of the paving rake rack 11, and in the concrete implementation, a person skilled in the art can choose the height according to actual needs. It should be understood, however, that the three embodiments described above are only exemplary descriptions of the embodiments of the present invention, and are not intended to limit the scope of the paving machine provided by the present invention, and the lifting assembly 21 described above may also have other structures if the functions are satisfied; for example, the driving member 211 may be vertically arranged, and then the lifting motion may be directly output through a screw structure, or the lifting assembly 21 may also adopt a component capable of directly outputting a linear displacement, such as an air cylinder or an oil cylinder, and then the lifting force is output by a piston rod of the air cylinder or the oil cylinder.

Further, a controller and a monitoring component can be arranged, wherein the monitoring component can be a thickness scanner or the like, and can be arranged on the motion track of the slab to monitor the thickness of the slab. The controller can be in signal connection with the monitoring part and the driving part 211 of each lifting unit 2, and the controller can receive the thickness information fed back by the monitoring part and automatically adjust the height of the paving rake rack 11 according to the thickness information. Besides, a control button for controlling the driving member 211 to start and stop can be further provided, so that the driving member 211 can be manually controlled to start and stop through the control button, and the height of the paving rake frame 11 can be manually adjusted.

The connection structure of the telescopic part 212a and the upper end of the movable link 22 may be determined according to the movement form of the telescopic part 212 a.

If the telescoping portion 212a is only vertically displaceable, such as the aforementioned rack, the telescoping portion 212a may be directly articulated with the movable link 22. Alternatively, as shown in fig. 3, the telescopic portion 212a may be fixed to the first lifting lug 24 by a screw connection, welding, or the like, and further hinged to the movable connecting rod 22 via the first lifting lug 24.

If the telescopic part 212a is vertically displaced and simultaneously rotates around its own axial direction, such as the aforementioned lead screw, the telescopic part 212a can only be hinged with the movable connecting rod 22 through the first lifting lug 24, so as to avoid the torsion generated by the direct hinge of the telescopic part 212a with the movable connecting rod 22. At this time, the first lifting lug 24 needs to be capable of rotating relative to the movable connecting rod 22, and the connection structure of the first lifting lug 24 and the telescopic portion 212a can be referred to as follows: the upper end surface of the first lifting lug 24 can be provided with a mounting groove, the telescopic part 212a can be inserted into the mounting groove, the outer wall surface of the end part of the telescopic part 212a, which is positioned in the mounting groove, can be provided with a baffle plate which extends outwards along the radial direction, then the notch of the mounting groove can be shielded through a cover plate and the like, and the baffle plate and the cover plate can be abutted against each other along the axial direction so as to prevent the first lifting lug 24 from sliding off from the telescopic part 212 a; it is understood that the above description of the connection structure of the first lifting lug 24 and the telescopic portion 212a is only an exemplary description, and in practical applications, other structures between the first lifting lug 24 and the telescopic portion 212a may be adopted as long as the above effects can be achieved.

The lower end of the movable connecting rod 22 can be directly hinged with the spreading machine frame 11, or can be hinged with the spreading machine frame 11 through a second lifting lug 25, as shown in fig. 2, the section of the second lifting lug 25 can be in an inverted T shape, the vertical part of the inverted T shape is a hinged part and can be connected with the movable connecting rod 22, and the horizontal part is a fixed part and can be connected with the spreading machine frame 11.

As also shown in fig. 11 and 12, the lifting unit 2 may further include a guide assembly 23, the guide assembly 23 may include a first guide 231 and a second guide 232, the first guide 231 may be vertically disposed, and the second guide 232 may be fixed to the rake frame 11; and the second guiding element 232 can be slidably fitted with the first guiding element 231 along the up-down direction to guide the elevation of the paving rake group 1.

One of the first guide 231 and the second guide 232 may be provided with a slide rail 231a, and the other may be provided with a slide groove 232a, and the slide rail 231a may be inserted into the slide groove 232a and may slide up and down along the slide groove 232 a; the number of the slide rails 231a and the slide grooves 232a is not limited, and both the slide rails 231a and the slide grooves 232a may be one or more, and when there are more slide rails 231a and the slide grooves 232a, they may be in one-to-one correspondence. Alternatively, both the guide members may be provided with a slide rail 231a and a slide groove 232a, and the slide rail 231a of one may be slidably engaged with the slide groove 232a of the other.

Specifically, as shown in fig. 14 and 15, the slide rail 231a may be provided on the first guide 231, and the slide groove 232a may be provided on the second guide 232. The second guiding member 232 may further have a strip hole 232b, and a connecting member in the form of a peripheral screw, a bolt, or the like may pass through the strip hole 232b to fix the second guiding member 232 to the rake frame 11, and the installation position of the second guiding member 232 on the rake frame 11 can be adjusted by adjusting the position of the connecting member in the strip hole 232 b.

The paving rake rack 11 can be generally square, and in order to ensure the stable structure, the number of the lifting units 2 can be four, and the four lifting units 2 can be arranged at four corners of the paving rake rack 11 in a one-to-one correspondence manner; in addition, in the four lifting units 2, two lifting units 2 adjacent to each other in the circumferential direction may share one driving member 211, so as to reduce the number of the driving members 211, and of course, the driving members 211 may be separately configured for each lifting unit 2, so as to improve the flexibility of adjustment. It can be understood that the number of the lifting units 2 is not limited to four, and may be more, and may be determined according to actual requirements.

Referring to fig. 16-19, fig. 16 is a schematic structural view of a blanking rake, fig. 17 is a schematic structural view of the installation of a blanking sheet, fig. 18 is a schematic structural view of the installation of a rear blanking sheet adjacent to the blanking sheet in fig. 17, and fig. 19 is a schematic structural view of the installation of a rear blanking sheet adjacent to the blanking sheet in fig. 18.

Still as shown in fig. 2, and with reference to fig. 16 and 17, a discharging rake group 4 is disposed at an outlet end (right end in the figure) of the paving bin 5, and includes a plurality of discharging rakes 41, where the discharging rakes 41 include a discharging rake roller 411, the discharging rake roller 411 is axially provided with a plurality of lower material sheets 412 at intervals, each lower material sheet 412 includes a plurality of blades 412a circumferentially provided at intervals, and with the rotation of the discharging rake roller 411, each blade 412a can stir and throw incoming materials (hereinafter referred to as shavings) so as to discharge the shavings to a scattering rake or paving rake below.

Different from the prior art, the blade 412a includes a handle 412a-1 and a head 412a-2, the head 412a-2 is mounted at the outer end of the handle 412a-1 and can tilt toward the rotation direction relative to the handle 412a-1, that is, the head 412a-2 is bent toward the rotation direction relative to the handle 412a-1, and with reference to fig. 2 as a view angle and with reference to fig. 3, the wood shavings can enter the working range of the blanking rake group 4 from the left, and the lower material plate 412 rotates clockwise.

The blanking harrow in the form has strong throwing capacity to the wood shavings, is particularly suitable for producing oriented strand boards with large thickness, and can also be suitable for producing other types of strand boards or other fields with blanking requirements.

The lower material piece 412 may further include an annular base piece 412b, the inner end of the handle 412a-1 may be fixed to the base piece 412b, the lower material piece 412 may be sleeved on the discharging rake roller 411 through the base piece 412b, and an anti-rotation structure may be disposed between the inner wall surface of the base piece 412b and the outer wall surface of the discharging rake roller 411, so as to ensure that the lower material piece 412 and the discharging rake roller 411 can rotate synchronously.

In one embodiment, the cross section of the matching section of the blanking rake roller 411 and the blanking sheet 412 can be set to be non-circular, such as oval, square, etc., and correspondingly, the inner hole of the substrate 412b can be set to be non-circular, such as oval, square, etc., matching with the blanking rake roller 411, so that when the blanking sheet 412 is sleeved on the substrate blanking rake roller 411, no relative rotation is generated between the two.

In another embodiment, which is also the solution adopted in the drawings of the present invention, one of the inner wall surface of the base plate 412b and the outer wall surface of the blanking harrow roller 411 may be provided with a convex key 412b-1 extending along the axial direction, and the other may be provided with a key slot 411a extending along the axial direction, so that in an assembled state, the convex key 412b-1 may be inserted into the key slot 411a, and the synchronous rotation of the blanking scraper roller 411 and the blanking piece 412 can also be ensured.

In this embodiment, the convex keys 412b-1 may be specifically disposed on the base sheet 412b, and the key slots 411a may be specifically disposed on the blanking harrow roller 411, both the number of the convex keys 412b-1 and the number of the key slots 411a may be one or more, and when the number of the convex keys is more than one, the installation positions of the convex keys and the installation positions of the key slots need to be matched, so that the convex keys 412b-1 can be inserted into the corresponding key slots 411a in a one-to-one correspondence manner.

In comparison, the two embodiments can effectively ensure the synchronous rotation of the lower material sheet 412 and the blanking harrow roller 411, and in practice, the skilled person can select the material sheets according to actual needs.

With continued reference to FIG. 17, the outer end of the head 412a-2 may be pointed to further enhance the sweeping and throwing effect of the blades 412a on the shavings.

The central axis of the handle 412a-1 may be perpendicular to the central axis of the discharging rake roller 411, that is, the handle 412a-1 may be disposed in a plane perpendicular to the central axis of the discharging rake roller 411, and in this plane, the handle 412a-1 and the discharging rake roller 411 may be disposed at an included angle in the radial direction, as shown in fig. 17, 18 and 19, and the handle 412a-1 may also be gradually inclined from the inside to the outside toward the rotation direction. In this regard, the blade 412a formed by the combination of the shank 412a-1 and the head 412a-2 may be generally in the shape of a curved knife, i.e., the entire blade 412a may be gradually inclined from the inside to the outside toward the rotating direction, but it is still necessary to ensure that the head 412a-2 and the shank 412a-1 have different inclinations in the radial direction so as to form the curved head 412 a-2.

In a particular version, and as also shown in FIG. 17, in the direction of rotation, the handle portion 412a-1 can include first and second opposing handle edges 412a-1a, 412a-1b, and the head portion 412a-2 can include first and second opposing head edges 412a-2a, 412a-2 b; the first handle edge 412a-1a may be a tangent to the outer edge of the substrate 412b, and the first head edge 412a-2a may be connected to the first handle edge 412a-1a and inclined with respect to the first handle edge 412a-1a in the rotational direction, and may form an obtuse angle therebetween, such that the first head edge 412a-2a has a tendency to extend outwardly as a whole; the second head edge 412a-2b is connected to the first head edge 412a-2a, and may form an acute angle therebetween to form the aforementioned tip structure; in the rotating direction, the second head edge 412a-2b and the second handle edge 412a-1b can be disposed in a staggered manner to form a step, thereby ensuring that the head 412a-2 forms the aforementioned bending structure relative to the handle 412 a-1. In this aspect, first handle edge 412a-1a, second handle edge 412a-1b, first head edge 412a-2a, and second head edge 412a-2b may each be straight edges to facilitate machining.

It is understood that the number of the blades 412a of the lower material sheet 412 is not too large, the processing of the excessive blades 412a is difficult, the number of the blades 412a of the lower material sheet 412 is not too small, and the insufficient blades 412a cannot achieve a good effect of throwing the shavings. In the embodiment of the present invention, the number of the blades 412a is preferably three, and the three blades 412a may be equally spaced in the circumferential direction; of course, the number of blades 412a may be other values, such as four, etc.

With this type of blanking blade 412, during operation, when one blade 412a contacts the shavings, the next blade 412a contacts the shavings, requiring the blanking rake roll 411 to rotate 120 degrees, thus requiring the blanking rake roll 411 to have a greater rotational speed if it is desired to ensure that the blade 412a is acting on the shavings on the conveyor belt nearly continuously and uninterruptedly.

In view of the above, the present invention provides a solution that the lower material sheets 412 are installed in a staggered manner in the circumferential direction along the extending direction (i.e. the front-back direction) of the blanking harrow roller 411, so as to reduce the requirement of high rotation speed on the blanking harrow roller 411. Specifically, in the extending direction of the blanking harrow roller 411, the N adjacent blanking sheets 412 can be grouped into one group, and in each group, the following lower material sheet 412 can rotate in the same direction (all clockwise or counterclockwise) in the circumferential direction relative to the preceding adjacent lower material sheet 412And (5) mounting.

Taking N as an example, refer to fig. 17, 18 and 19, where fig. 18 is the next lower web 412 in fig. 17, fig. 19 is the next lower web 412 in fig. 18, fig. 17 to 19 show just one set of adjacent lower webs 412, each blade 412a of the next lower web 412 in fig. 18 is mounted by rotating clockwise 40 degrees corresponding to each blade 412a of the next lower web 412 in fig. 17, and each blade 412a of the next lower web 412 in fig. 19 is mounted by rotating clockwise 40 degrees corresponding to each blade 412a of the next lower web 412 in fig. 18.

In the extending direction of the blanking harrow roller 411, the lower sheets 412 can be numbered: 1. 2, 3, … (3n +1), (3n +2), (3n +3) …, wherein n is a natural number greater than 0; in the above-described arrangement, the 1 st lower material sheet 412 may have the same arrangement angle as the (3n +1) th lower material sheet 412, and for convenience of description, this part of the lower material sheet 412 may be referred to as a type of lower material sheet, the 2 nd lower material sheet 412 may have the same arrangement angle as the (3n +2) th lower material sheet 412, this part of the lower material sheet 412 may be referred to as a type two lower material sheet, and the 3 rd lower material sheet 412 may have the same arrangement angle as the (3n +3) th lower material sheet 412, this part of the lower material sheet 412 may be referred to as a type three lower material sheet; in the rotating process of the discharging rake roller 411, after the blades 412a of the first-class lower material sheet are contacted with the shavings, the blades 412a of the second-class lower material sheet can rotate to the position where the blades 412a of the previous-class lower material sheet are located to supplement the position so as to continuously act on the shavings, similarly, after the blades 412a of the second-class lower material sheet are contacted with the shavings, the blades 412a of the third-class lower material sheet can supplement the position only by rotating 40 degrees, that is, the blades 412a act on the shavings when the discharging rake roller 411 rotates 40 degrees, compared with the scheme that the discharging rake roller 411 is installed at the same angle, the requirement on the rotating speed of the discharging rake roller 411 can be reduced by 3 times, and further energy consumption can be greatly reduced.

Meanwhile, as the lower material pieces 412 of each group are arranged along the circumferential direction in a staggered manner, when viewed along the axial direction, the periphery of the blanking rake roller 411 is equivalent to 9 blades 412a, and in the process that the blanking rake roller 411 rotates for a circle, 9 blades 412a can be in contact with the shavings, so that the continuous action of the blades 412a on the shavings can be effectively ensured; and the linear velocities generated by the 9 vanes 412a can be superimposed, the linear velocity that can be generated by the lower web 412 can also be greatly increased.

The above-mentioned N value should not be too big, and too big N can make the dislocation installation angle of tablet 412 less under two adjacent, and on the one hand, the installation is comparatively difficult, and on the other hand also can lead to the blade 412a that unloading rake roll 411 circumference exists too densely, and the angle between the adjacent two blades 412a of the circumference of tablet 412 is less under two adjacent, and rectangular shape wood shavings block easily between these two blades 412a, then causes the circumstances of card material, parcel clamp, is unfavorable for the unloading. Tests prove that in the embodiment of the invention, N is preferably equal to 3 or 4, that is, the adjacent two lower material sheets 412 can be installed in a staggered manner by keeping an angle of 30 degrees or 40 degrees, so that the requirement on the rotating speed of the blanking rake roller 411 can be greatly reduced, the blanking speed is not affected, material blockage is not easy to occur, and the production continuity and efficiency can be ensured.

In practical application, a driving force can be provided for the blanking rake roller 411 through a driving member in the form of a variable-frequency speed reduction motor or the like, so as to adjust the rotating speed of the blanking rake roller 411, further adjust the linear speed that the lower material sheet 412 can provide, so as to be matched with the speed of conveying the wood shavings by the material conveying belt, and the matching relationship between the speeds of the two can be adjusted according to practical situations, which is not limited herein.

A second spacer 413 may be further disposed between two adjacent lower sheets 412, and two ends of the second spacer 413 may respectively abut against two adjacent lower sheets 412 to define an axial installation distance between the two adjacent lower sheets 412, where the axial installation distance is related to the size of raw wood shavings used for production.

During production, the axial installation distance between the two lower sheets 412 should be greater than the average width of the produced type i shavings, so as to avoid to a large extent the shavings getting stuck between the two lower sheets 412. In particular to the embodiment of the invention, the axial length of the second spacer 413 can be set to be 25-30mm, preferably 28mm, that is, the distance between two lower material sheets 412 is controlled to be 25-30 mm; the wall thickness of the second spacer 413 may then be smaller than or equal to the wall thickness of the base 412b, so that there is a larger space in the radial direction to accommodate the shavings.

Referring to fig. 2 again, when the paving machine is applied, the discharging rake group 4 in the paving bin 5 may generally include 6 to 7 discharging rakes 41, the central axes of the discharging rake rollers 411 of each discharging rake 41 may be located on the same installation surface, and the central axes of the discharging rake rollers 411 may be parallel to each other and arranged at equal intervals; from top to bottom, the mounting surface can be inclined towards the front of the feeding direction (the left-to-right direction in the drawing) gradually, specifically, the included angle between the mounting surface and the horizontal plane can be 45-47 degrees, so that the thrust to the discharging harrow roller 411 during the wood shaving movement is gradually reduced from bottom to top, the bending deformation of the discharging harrow roller 411 can be prevented to a greater extent, and the service life of the discharging harrow 41 can be prolonged.

Traditional spreading machine only includes 3 shop's heads usually, be vertical shop's head respectively, horizontal shop's head and vertical shop's head, the spreading machine of this kind of form, if the thickness of the shaving board of producing is great, the thickness of the unit of mating formation that each shop's head corresponds formation on the slab also can be great, corresponding shop's head will be great to the distance between the slab, the shop's head is when scattering the unloading, the shaving receives windage and action of gravity obvious, can influence the smoothness of shaving mating formation, and then influence the quality of shaving board of producing.

Therefore, through research and research, the embodiment of the invention provides a paving machine comprising 7 paving heads, as shown in fig. 1, along the running direction of a plate blank, the paving heads can comprise a first longitudinal paving head 1#, a first transverse paving head 2#, a second longitudinal paving head 3#, a fine material paving head 4#, a third longitudinal paving head 5#, a second transverse paving head 6# and a fourth longitudinal paving head 7#, so that 7 paving units can be formed, the thickness of each corresponding paving unit can be greatly reduced, the distance between the paving rake group 1 of each paving head and the plate blank can be reduced, the influence of wind resistance and gravity on wood shavings during paving is small, and the smoothness of wood shavings paving is further favorably ensured so as to improve the quality of a shaving board.

Moreover, because the thickness of each layer of paving units is smaller, the paving units of each layer can be controlled finely, according to the requirements of different customers, for example, when the bearing requirement is lower, the paving thickness of each layer can be consistent, for example, when the bearing requirement is higher, the paving units of the surface layer and the bottom layer can be larger, the thickness can be smaller in the middle, and the fine regulation and control mode can conveniently reduce the production cost from the paving raw materials and the hot pressing period.

The spreading machine in the form can be used for producing oriented strand boards, particularly oriented strand boards for container floors, the requirement on the mechanical strength of the container floors is high, the container floors are required to be impact-resistant, and the prior art adopts raw wood with higher density or plywood with a whole wood structure, so that the cost is higher. The shaving board produced by the paving machine provided by the invention has more paving layers, the combination of the paving units formed by each layer can simulate and approach to the internal hierarchical structure of the plywood, the transverse paving layers and the longitudinal paving layers are obviously shown on the cross section of the shaving board, the quality of the shaving board can be greatly improved, the shaving board is more easily accepted by markets and customers, and the production cost can be greatly reduced compared with that of raw wood or all-wood plywood.

Moreover, the combination of the paving units can reduce the influence of pressure curve change, chemical change of adhesive, physical change of moisture and the like on the board blank in the hot pressing process, and can reduce the influence of natural phenomena such as heat dissipation, moisture absorption and the like on the finished shaving board in the storage process. That is to say, the more units of mating formation, the finished product shaving board after the hot pressing is difficult more to take place to stick up limit and crooked, compares in prior art, and the quality of shaving board also can obtain improving by a wide margin.

Certainly, the number of paving heads can not be increased without limit, and researches show that paving of a complete plate blank needs to be completed within 10 minutes, otherwise, the plate blank absorbs moisture contained in an adhesive into wood fibers, the adhesive loses activity, the surface adhesion of shavings is reduced, the plate blank with certain strength cannot be formed in a subsequent prepressing process, the processes of transverse segmentation, hot press forming and the like can be greatly influenced, and the plate blank is loose in severe cases and cannot complete the next process.

For this reason, the number of the paving heads is set to 7 in the embodiment of the present invention, so as to take advantages of all aspects into consideration, in a specific scheme, the total length of the paving machine is about 66.74 m, the paving speed is set to 7 m/min, and the paving of a complete slab can be completed in about 9 min. By combining the improvements of the paving rake group 1, the bulk material rake group 3, the blanking rake group 4 and the like, the formed plate blank is orderly arranged in the longitudinal direction and the transverse direction, the longitudinal wood shaving proportion (the proportion of wood shavings longitudinally arranged in the longitudinal paving unit) can reach 80 percent, the transverse wood shaving proportion (the proportion of wood shavings transversely arranged in the transverse paving unit) can reach 70 percent, the orientation effect is more obvious, and the quality and the strength of the shaving board are greatly improved.

The sequence of the seven paving heads is fixed, but the specific selection of which paving heads are put into use can be adjusted according to market changes and customer requirements. Generally speaking, the first longitudinal paving head 1# (or the second longitudinal paving head 3#) and the fourth longitudinal paving head 7# (or the third longitudinal paving head 5#) must be used, that is, two longitudinal paving heads must be used, and other paving heads can be preferentially used, so that the cost can be saved, and the opportunity of emergency maintenance of equipment can be reduced.

In the above description, mention is made of: in the process of transverse paving, materials may be gathered at the paving harrow 12 at the lowest stage, and further, the transverse paving thickness is uneven. For this reason, the embodiment of the present invention improves the structure of the horizontal paving harrow disk 6, but the horizontal shifting trend of the wood shavings from the upper stage to the lower stage cannot be changed, so that the horizontal paving thickness may be uneven.

To better solve the problem, the paving machine provided by the present invention needs to use the transverse paving heads, that is, the first transverse paving head 2# and the second transverse paving head 6# are activated simultaneously, and the directions of the transverse paving rake groups 6 from the upper stage to the lower stage of the two transverse paving heads can be opposite, as reference is made to fig. 20, that is, the direction from the upper stage to the lower stage of one transverse paving rake group 6 is from right to left, the paving result is that the left side is thick and the right side is thin, the direction from the upper stage to the lower stage of the other transverse paving rake group 6 is from left to right, the paving result is that the left side is thin and the right side is thick, and the two transverse paving rake groups 6 can be complemented to maximally balance the uniformity of the left and right thicknesses in transverse paving.

It will be appreciated that the above solution comprising 7 placement heads is only a preferred solution of the embodiment of the invention, and it is not intended to limit the scope of the invention as it provides for the placement machine, and that other numbers of placement heads, e.g. 3 or 5, may be used in a particular implementation.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. A paving machine comprises a plurality of paving heads, each paving head is provided with a paving rake group (1), each paving rake group (1) comprises a plurality of paving rakes (12), each paving rake (12) comprises a paving rake roller (121) and a plurality of orientation pieces (122) sleeved on the paving rake roller (121), and the paving machine is characterized in that saw tooth sections (122a) and sickle tooth sections (122b) are arranged on the peripheries of the orientation pieces (122), each saw tooth section (122a) can generate dragging force for wood shavings to move between two adjacent orientation pieces (122), each sickle tooth section (122b) can generate poking force for wood shavings to move to the adjacent paving rake (12), and the dragging force is greater than the poking force;

when the saw tooth section (122a) can not drag the shavings to be fed between the two orientation pieces (122), the sickle tooth section (122b) can shift the shavings to be adjacent to the paving harrow (12).

2. The paving machine as claimed in claim 1, wherein the number of the saw tooth segments (122a) is plural, each saw tooth segment (122a) is distributed at equal intervals along the circumferential direction, and the sickle tooth segment (122b) is arranged between two adjacent saw tooth segments (122 a);

the length of the sickle tooth section (122b) is less than the saw tooth section (122a), the sickle tooth section (122b) comprises at least one sickle tooth, the length of the sickle tooth is greater than the width of the shavings, and the length of the saw tooth section (122a) is greater than the length of the shavings.

3. The spreading machine according to claim 2, wherein the teeth of each sickle tooth are identical, the number of sickle tooth segments (122b) being e;

along the extending direction of the paving harrow roller (121), adjacent E orientation sheets (122) form a group, and in each group, the following orientation sheet (122) rotates along the same direction along the circumferential direction relative to the adjacent orientation sheet (122) in the frontAnd (3) mounting, wherein E is equal to 5 or 6, and E is equal to 2 or 3.

4. The spreading machine according to claim 3, wherein the sickle tooth has a first tooth shape, the first tooth shape is a hook shape and comprises a hook edge (122b-1) which can be used for shifting the shavings and a hook bottom edge (122b-2) connected with the hook edge (122 b-1); or,

the sickle teeth are provided with a second tooth form which is a U-shaped groove and comprises groove edges (122b-3) which are oppositely arranged and can be used for shifting shavings and groove bottom edges (122b-4) connecting the two groove edges (122 b-3).

5. The spreading machine according to claim 2, wherein the sickle teeth have two tooth forms, and the sickle tooth segments (122b) having two tooth forms are sequentially arranged along the periphery of the orientation piece (122), the number of the sickle tooth segments (122b) being 2 f;

along the extending direction of the paving harrow roller (121), adjacent F orientation pieces (122) form a group, and in each group, the following orientation piece (122) rotates along the same direction along the circumferential direction relative to the adjacent orientation piece (122) in the frontAnd (3) mounting, wherein F is equal to 2 or 3, and F is equal to 3 or 4.

6. The spreading machine according to claim 5, wherein the two tooth forms comprise a first tooth form and a second tooth form, the first tooth form is a hook form and comprises a hook edge (122b-1) capable of shifting shavings and a hook bottom edge (122b-2) connected with the hook edge (122b-1), and the second tooth form is a U-shaped groove and comprises a groove edge (122b-3) capable of shifting shavings and a groove bottom edge (122b-4) connected with the two groove edges (122b-3) which are oppositely arranged.

7. The paving machine according to claim 2, characterized in that the orientation tab (122) comprises a large tab (122-1) and a small tab (122-2), the large tab (122-1) having a larger diameter than the small tab (122-2);

one large piece (122-1) and at least one small piece (122-2) form a small group, and a plurality of small groups of the orientation pieces (122) are sequentially arranged along the extending direction of the paving rake roller (121); or, one small piece (122-2) and at least one large piece (122-1) form a small group, and a plurality of small groups of the orientation pieces (122) are sequentially arranged along the extending direction of the paving rake roller (121).

8. The paving machine as claimed in claim 7, characterized in that one of said large pieces (122-1) and one of said small pieces (122-2) are grouped into a small group, and a plurality of small groups of said orientation pieces (122) are sequentially arranged along the extension direction of said paving harrow roller (121), and in each small group, the installation angles of said orientation pieces (122) are consistent.

9. The paving machine as claimed in claim 8, characterized in that the teeth of each of said sickle teeth are identical, the number of said sickle tooth segments (122b) is E, and in the direction of extension of said paving harrow roller (121), the adjacent E subgroups are grouped into one large group, and in each large group, said orientation pieces (122) of the following subgroup are rotated in the same circumferential direction with respect to said orientation pieces (122) of the preceding adjacent subgroupC, mounting, wherein E is equal to 5 or 6, and E is equal to 2 or 3; or,

the sickle teeth have two tooth forms, the sickle tooth sections (122b) with the two tooth forms are sequentially arranged along the periphery of the orientation piece (122), the number of the sickle tooth sections (122b) is 2F, adjacent F small groups are arranged in one large group along the extension direction of the paving harrow roller (121), in each large group, the orientation piece (122) of the following small group rotates along the same circumferential direction relative to the orientation piece (122) of the preceding adjacent small groupAnd (3) mounting, wherein F is equal to 2 or 3, and F is equal to 3 or 4.

10. The paving machine as claimed in any one of claims 1 to 9, characterized in that an anti-rotation structure is provided between the inner edge of each orientation plate (122) and the outer wall surface of the paving harrow roller (121), and a first spacer (123) is provided between two adjacent orientation plates (122).

11. The paving machine as claimed in claim 10, characterized in that said paving rake group (1) is capable of acting as a longitudinal paving rake group, and in that, in acting as said longitudinal paving rake group, the spacing between two adjacent directional blades (122) of the downstream paving rake (12) is greater than the spacing between two adjacent directional blades (122) of the upstream paving rake (12); or, from the upstream to the downstream, every C paving rakes (12) are in one class, the distance between two adjacent directional sheets (122) of each paving rake (12) is the same in the same class, and the distance between two adjacent directional sheets (122) of the downstream class of paving rakes (12) is larger than that between two adjacent directional sheets (122) of the upstream class of paving rakes (12).

12. The paving machine as claimed in claim 11, characterized in that, from upstream to downstream, each rake (12) is divided into three categories, the spacing between two adjacent directional blades (122) of the rake (12) of the most upstream category being 24-28mm, the spacing between two adjacent directional blades (122) of the rake (12) of the most downstream category being 59-63mm, and the spacing between two adjacent directional blades (122) of the rake (12) of the middle category being 38-42 mm.

13. The paving machine according to claim 12, characterized in that a bulk material rake group (3) is further arranged above the paving rake group (1), the bulk material rake group (3) comprises a plurality of bulk material rakes (32), each bulk material rake (32) comprises a bulk material rake roller (321) and a plurality of rolling pins (322) arranged on the outer wall surface of the bulk material rake roller (321), and the distance between two adjacent bulk material rakes (32) is greater than the thickness of the shavings.

14. The paving machine as claimed in claim 13, characterized in that said spreading rakes (32) are equal in number to said spreading rakes (12) and that each of said spreading rakes (32) is also divided into three categories from upstream to downstream;

the quantity of the most upstream type of the bulk material rakes (32) is the same as that of the most upstream type of the paving rakes (12), and the bulk material rakes are arranged in a one-to-one correspondence manner; the quantity of the middle type of the bulk material rakes (32) is the same as that of the middle type of the paving rakes (12), and the intermediate type of the bulk material rakes are arranged in a one-to-one correspondence manner; the quantity of the most downstream type of the bulk material rakes (32) is the same as that of the most downstream type of the paving rakes (12), and the bulk material rakes are arranged in a one-to-one correspondence manner; the distance between two adjacent scattering rakes (32) of two adjacent scattering rakes (32) is gradually increased from upstream to downstream.

15. The paving machine according to claim 11, characterized in that said paving rake (1) is also able to act as a transverse paving rake (6), and in that, as said transverse paving rake (6), the pitch between two adjacent directional blades (122) of said paving rake (12) varies progressively along the extension of said paving rake roller (121); or, along the extending direction of the paving rake roller (121), every D orientation pieces (122) of the paving rake (12) are in one class, the distance between every two adjacent orientation pieces (122) in the same class is the same, and the distance between every two adjacent orientation pieces (122) in each class of orientation pieces (122) gradually changes along the extending direction of the paving rake roller (121).

16. The paving machine as claimed in claim 15, characterized in that, from upstream to downstream, the orientation blades (122) of the rake (12) are divided into three categories, the spacing between two adjacent orientation blades (122) of the most upstream category being 24-28mm, the spacing between two adjacent orientation blades (122) of the most downstream category being 59-63mm, and the spacing between two adjacent orientation blades (122) of the middle category being 38-42 mm.

17. The paving machine as claimed in claim 15, characterized in that, in the transverse direction, the rotation speed of the rake (12) of the upper stage is greater than the rotation speed of the rake (12) of the adjacent lower stage, and the rotation direction of the rake (12) of the lowermost stage is opposite to the rotation direction of the other rake (12).

18. The paving machine as claimed in claim 17, characterized in that said orienting tab (122) of the rake (12) of the lowest stage has a radial dimension greater than the orienting tabs (122) of the other rakes (12).

19. -the paving machine as claimed in claim 17, characterized in that the number of said paving heads is 7, which, in the direction of travel of the slab, comprise a first longitudinal paving head (1#), a first transverse paving head (2#), a second longitudinal paving head (3#), a fine paving head (4#), a third longitudinal paving head (5#), a second transverse paving head (6#), a fourth longitudinal paving head (7 #);

the first vertical paving head (1#), the second vertical paving head (3#), the fine material paving head (4#), the third vertical paving head (5#), the fourth vertical paving head (7#) are all installed the vertical paving harrow group that paves, the first horizontal paving head (2#), the second horizontal paving head (6#) is all installed the horizontal paving harrow group (6).

20. The paving machine as claimed in claim 19, characterized in that the direction of the transverse paving rake (6) of the first transverse paving head (2#) from the upper level to the lower level is opposite to that of the second transverse paving head (6 #).

21. The paving machine as claimed in claim 19, wherein at least two of the longitudinal paving heads are in use.

22. The paving machine as claimed in claim 1, characterized by further comprising a lifting mechanism for adjusting the height of the paving rake group (1), comprising a plurality of lifting units (2), wherein each lifting unit (2) is installed at a paving rake frame (11) along the circumferential direction at intervals, each lifting unit (2) comprises a lifting component (21) and a movable connecting rod (22), the lifting component (21) is installed on the frame of the upper part of the paving rake group (1), the telescopic part (212a) of the lifting component (21) can be displaced in the vertical direction, and one end of the movable connecting rod (22) is hinged with the telescopic part (212a) and the other end is hinged with the paving rake frame (11).

23. The paving machine according to claim 22, characterized in that said lifting unit (2) further comprises a guide assembly (23), said guide assembly (23) comprising a first guide (231) and a second guide (232), said first guide (231) being vertically disposed, said second guide (232) being fixed to said paving rake frame (11);

the second guide piece (232) is in sliding fit with the first guide piece (231) along the up-down direction so as to guide the lifting of the paving harrow group (1).

24. The spreading machine according to claim 22, wherein one of the first guide (231) and the second guide (232) is provided with a slide rail (231a), and the other is provided with a slide groove (232a), and the slide rail (231a) is inserted into the slide groove (232a) and can slide in the slide groove (232 a).

25. The paving machine as claimed in claim 22, characterized in that the second guide (232) is provided with a strip-shaped hole (232b), a peripheral connecting piece can pass through the strip-shaped hole (232b) to fix the second guide (232) to the paving rake frame (11), and the mounting position of the second guide (232) on the paving rake frame (11) can be adjusted by adjusting the position of the connecting piece in the strip-shaped hole (232 b).

26. The paving machine as claimed in any one of claims 22-25, characterized in that the lifting assembly (21) comprises a drive member (211) and a transmission member (212), the drive shaft (211a) of the drive member (211) being connected to the input shaft of the transmission member (212).

27. The paving machine as claimed in claim 26, characterized in that a first lifting lug (24) is connected to the lower end of said telescopic portion (212a) and is hinged to the upper end of said movable connecting rod (22) by means of said first lifting lug (24).

28. The paving machine as claimed in claim 26, further comprising a controller and monitoring means for monitoring thickness information of the slab;

the controller is in signal connection with the monitoring part and the driving part (211), and the controller can receive the thickness information and control the starting and stopping of the driving part (211) according to the thickness information so as to adjust the height of the paving rake rack (11).

29. The paving machine as claimed in claim 26, characterized in that the number of said lifting units (2) is four, four said lifting units (2) being provided in a one-to-one correspondence at the four corners of said paving rake frame (11).

30. The spreading machine according to claim 26, wherein the upper member is a bulk rake (3).

31. The paving machine as claimed in claim 1, wherein each paving head comprises a paving bin (5), the outlet end of the paving bin (5) is provided with a blanking rake group (4), the blanking rake group (4) comprises a plurality of blanking rakes (41), each blanking rake (41) comprises a blanking rake roller (411), each blanking rake roller (411) is provided with a plurality of blanking sheets (412) at intervals along the axial direction, each blanking sheet (412) comprises a plurality of blades (412a) at intervals along the circumferential direction, each blade (412a) comprises a handle part (412a-1) and a head part (412a-2), and the head part (412a-2) is arranged at the outer end of the handle part (412a-1) and can incline towards the rotating direction relative to the handle part (412 a-1).

32. The paver of claim 31, wherein the lower sheet (412) further comprises a base plate (412b) in the shape of a ring, the inner end of the handle (412a-1) is fixed to the base plate (412b), and the lower sheet (412) is externally mounted to the blanking rake roller (411) through the base plate (412b) and can rotate synchronously with the blanking rake roller (411).

33. The spreading machine according to claim 32, wherein the inner wall surface of the base sheet (412b) and the outer wall surface of the blanking rake roller (411) are provided with a key (412b-1) extending in the axial direction on one side and a key groove (411a) extending in the axial direction on the other side, and the key (412b-1) can be inserted into the key groove (411a) in an assembled state.

34. The spreading machine according to claim 32, wherein the central axis of the handle (412a-1) is perpendicular to the central axis of the blanking rake roller (411) and is arranged at an angle to the radial direction of the blanking rake roller (411).

35. The paver according to any of the claims 31 to 34, characterized in that the number of said blades (412a) is three, three of said blades (412a) being equally spaced circumferentially.

36. The paver of claim 35, wherein, in the direction of extension of the feed rake rollers (411), N adjacent lower sheets (412) form a group, and in each group, the following lower sheet (412) is rotated in the same circumferential direction with respect to the preceding adjacent lower sheet (412)And (3) mounting, wherein N is equal to 3 or 4.

37. The paver of claim 35, characterized in that a second spacer (413) is arranged between two adjacent lower material sheets (412), and two ends of the second spacer (413) respectively abut against two adjacent lower material sheets (412).

38. The paving machine as claimed in claim 37, characterized in that said second spacer (413) has an axial length of 25-30 mm.

39. The spreading machine according to claim 35, wherein the number of the discharging harrows (41) is 6 or 7, the central axes of the discharging harrows (411) of each discharging harrow (41) are positioned on the same installation surface, and the central axes of the discharging harrows (411) are parallel to each other and are arranged at equal intervals;

from top to bottom, the mounting surface gradually inclines towards the front of the feeding direction, and the included angle between the mounting surface and the horizontal plane is 45-47 degrees.

40. The paving machine according to claim 35, characterized in that the paving bin (5) further comprises a bin body (51), the bottom of the bin body (51) is provided with a transport means (52) for transporting the pile (S) of shavings, the top of the bin body (51) is provided with a sweeping rake (53) for sweeping the top of the pile (S) of shavings, and the side of the bin body (51) is provided with a viewing window.