CN214251903U

CN214251903U - Theoretical maximum relative density instrument for asphalt mixture

Info

Publication number: CN214251903U
Application number: CN202120273585.XU
Authority: CN
Inventors: 王秀琴; 燕文奇
Original assignee: Beijing Lingbei Road Building Materials Co ltd
Current assignee: Beijing Lingbei Road Building Materials Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-09-21
Anticipated expiration: 2031-01-30

Abstract

The application relates to a theoretical maximum relative density meter for asphalt mixtures, which comprises a charging basket and a charging cover, wherein a vibrating table is placed on the vibrating table, the charging cover is covered at the opening of the charging basket, and a stirring device for scattering asphalt mixtures is arranged on one surface of the charging cover, which faces the charging basket; the stirring device comprises a motor vertically and fixedly connected to the material cover, a reciprocating screw rod fixedly connected to an output shaft of the motor, a guide rod fixedly connected to one end, far away from the motor, of the reciprocating screw rod and provided with a polygonal cross section, a first moving cylinder sleeved on the reciprocating screw rod and in threaded connection with the reciprocating screw rod, a second moving cylinder sleeved on the guide rod and stirring blades fixedly connected to the second moving cylinder, a connecting piece for realizing the rotation connection of the first moving cylinder and the second moving cylinder is arranged between the first moving cylinder and the second moving cylinder, and a limiting assembly for limiting the first moving cylinder to rotate is arranged on the material cover. The effect that this application has is that improved stirring vane and to bituminous mixture's efficiency of breaing up, shortened the experiment required time.

Description

Theoretical maximum relative density instrument for asphalt mixture

Technical Field

The application relates to mixture test equipment, in particular to a theoretical maximum relative density instrument for an asphalt mixture.

Background

The theoretical maximum relative density instrument of the asphalt mixture is an instrument used for calculating the void ratio, the compaction degree and the like of the design of the mix proportion of the asphalt mixture, road condition investigation or pavement construction quality management.

The Chinese utility model patent with the publication number of CN210347382U discloses a novel maximum theoretical density meter for asphalt mixture, which comprises a negative pressure container, a container cover, a vibration table, a weighing table, a control panel base and a vacuum pump, wherein the negative pressure container is fixed on the vibration table, the upper part of the negative pressure container is provided with a water outlet and a water outlet valve, and the negative pressure container is tightly closed with the container cover through fasteners at the two sides of the top end; and the top of the container cover is provided with a stirring motor, and the stirring motor is connected with a stirring rod and a stirring blade which extend into the negative pressure container. The asphalt mixtures which are adhered to each other are separated from each other by stirring, so that water fully enters the open gaps of the mixtures, bubbles are reduced, and the experiment precision is improved.

In view of the above-mentioned related technologies, the inventor found that the asphalt mixture dispersing efficiency is low by the rotation of the stirring blade alone, and thus the experiment process takes a long time.

SUMMERY OF THE UTILITY MODEL

In order to improve stirring vane and to the efficiency of breaing up of bituminous mixture, shorten the experiment required time, this application provides the biggest relative density appearance of bituminous mixture theory.

The application provides a theoretical maximum relative density appearance of bituminous mixture adopts following technical scheme:

a theoretical maximum relative density instrument for asphalt mixture comprises a vibration table, a charging basket placed on the vibration table, and a charging cover covering the opening of the charging basket, wherein a stirring device for scattering asphalt mixture is arranged on one surface of the charging cover facing the charging basket;

the stirring device comprises a motor vertically and fixedly connected to the material cover, a reciprocating screw rod fixedly connected to an output shaft of the motor, a guide rod fixedly connected to one end, far away from the motor, of the reciprocating screw rod and provided with a polygonal cross section, a first moving cylinder sleeved on the reciprocating screw rod and in threaded connection with the reciprocating screw rod, a second moving cylinder sleeved on the guide rod and stirring blades fixedly connected to the second moving cylinder, a connecting piece for realizing the rotation connection of the first moving cylinder and the second moving cylinder is arranged between the first moving cylinder and the second moving cylinder, and a limiting assembly for limiting the first moving cylinder to rotate is arranged on the material cover.

By adopting the technical scheme, when a worker starts the motor, the reciprocating screw rod and the guide rod are driven to rotate together, and the relative rotation of the second moving cylinder and the guide rod is limited by the polygonal cross section shape of the guide rod, so that the second moving cylinder rotates along with the guide rod, and the stirring blade rotates around the axis of the second moving cylinder; through the restriction subassembly for first removal section of thick bamboo does not rotate along with reciprocal lead screw, makes first removal section of thick bamboo take place reciprocating motion along the axis of reciprocal lead screw like this, and then drives the second and remove a section of thick bamboo and take place to remove on the guide arm, makes stirring vane produce stirring from top to bottom to the mixture, has improved agitating unit and has ordered about the efficiency of bituminous mixture dispersion, has shortened the experiment required time.

Optionally, the connecting piece includes two arc plates surrounding the first moving cylinder and the second moving cylinder simultaneously, a convex column and a semi-annular limiting strip are fixedly connected to the inner curved surface of each arc plate, and locking structures for stably connecting the two arc plates are arranged at the opposite ends of the two arc plates; offer on the global of first removal section of thick bamboo and supply projection male slot, offer on the global of second removal section of thick bamboo and hold the annular spout of spacing.

Through adopting above-mentioned technical scheme, the staff orders about the arc and goes up the projection and align with the slot on the first section of thick bamboo that removes, and spacing is adjusted well with the spout of the second section of thick bamboo that removes, then orders about the interior curved surface of arc and paste and lean on first removal section of thick bamboo and the global of the second removal section of thick bamboo, and the projection inserts in the slot this moment, and spacing inserts in the spout, and last two arcs pass through the stable connection of closure structure together, can realize that first removal section of thick bamboo is connected with the rotation of the second removal section of thick bamboo.

Optionally, the locking structure includes a first connecting plate and a second connecting plate respectively fixedly connected to the end portions of the two arc-shaped plates, an insertion rod penetrating through the first connecting plate and the second connecting plate, a shifting plate fixedly connected to one end of the insertion rod and abutting against the first connecting plate, a limiting disc fixedly connected to the other end of the insertion rod, and a spring fixedly connected between the first connecting plate and the limiting disc, wherein the spring is used for driving the limiting disc to be away from the second connecting plate; the first connecting plate is provided with a strip-shaped hole allowing the shifting plate to pass through.

Through adopting above-mentioned technical scheme, when two arcs encircle on first removal section of thick bamboo and second removal section of thick bamboo, the staff is through rotating the inserted bar, it adjusts well with the bar hole to drive group the board, then the spacing dish of extrusion is close to the second connecting plate, thereby order about the driving lever and pass first connecting plate through the bar hole, make group the board and be located one side that first connecting plate deviates from the second connecting plate, rotate at last and dial the board, make driving lever and bar hole cross dislocation, the second connecting plate is kept away from to the spring promotion spacing dish this moment, make group the board hug closely on first connecting plate, like this with first connecting plate and second connecting plate centre gripping between group board and spring, the stable connection of two arcs has been realized.

Optionally, a shallow slot into which the shifting plate is inserted is formed in the first connecting plate, and the shallow slot and the strip-shaped hole are arranged in a crossed manner.

Through adopting above-mentioned technical scheme, when agitating unit was in operating condition, the restriction was dialled the board and is received the vibration and take place around the rotation of inserted bar axis, improved the stability that two arcs are connected.

Optionally, the limiting assembly includes two limiting rods fixedly connected to the material cover and arranged along the axial direction of the reciprocating screw rod, and a sliding sleeve fixed to the first movable barrel is sleeved on each limiting ring.

Through adopting above-mentioned technical scheme, when reciprocal lead screw rotated, can produce stable relative rotation between reciprocal lead screw and the first cover that removes to first removal section of thick bamboo can take place to remove on reciprocal lead screw.

Optionally, the sliding sleeve is a linear bearing.

Through adopting above-mentioned technical scheme for the removal of sliding sleeve on the gag lever post is more smooth and easy, and the phase change has reduced the frictional resistance that first removal section of thick bamboo moved on reciprocal lead screw and received.

Optionally, one end of each of the two limiting rods, which is far away from the material cover, is provided with the same connecting ring sleeved on the second movable cylinder.

Through adopting above-mentioned technical scheme for the one end that the material was covered is kept away from to two gag lever posts connects into a whole, and the go-between has the cover to establish on the second removes a section of thick bamboo moreover, has strengthened the gag lever post and has kept away from the stability of material lid one end, reduces the gag lever post and keeps away from material lid one end and take place to rock, thereby makes the sliding sleeve remove more smoothly on the gag lever post.

Optionally, one end of each limiting rod facing the connecting ring is fixedly connected with a screw penetrating through the connecting ring, and the screw is in threaded connection with a nut tightly abutted to one surface of the connecting ring, which faces away from the limiting rod.

Through adopting above-mentioned technical scheme, realized being connected with dismantling of gag lever post to make the staff when dismantling the connecting piece, can dismantle the go-between earlier, reduce the connecting ring and dismantle the connecting piece to the staff and cause the interference.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through a vibration table, a charging basket, a charging cover, a stirring device, a motor, a reciprocating screw rod, a guide rod, a first moving cylinder, a second moving cylinder, a stirring blade, a connecting piece and a limiting component; after the motor is started by a worker, the reciprocating screw rod and the guide rod are driven to rotate, the first moving cylinder moves on the reciprocating screw rod to drive the stirring blades to stir the asphalt mixture up and down, and the second moving cylinder rotates along with the guide rod to horizontally stir the asphalt mixture, so that the efficiency of driving the asphalt mixture to be dispersed by the stirring device is improved, and the time required by an experiment is shortened;

2. through the arrangement of the arc-shaped plate, the convex column, the limiting strip, the locking structure, the slot and the sliding groove, the connecting piece is stably connected with the first movable barrel, the connecting piece is rotatably connected with the second movable barrel, and the first movable barrel is indirectly rotatably connected with the second movable barrel.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a cross-sectional view of a container in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a connecting member in the embodiment of the present application.

Fig. 4 is an exploded view of the connector and the first movable barrel in the embodiment of the present application.

Description of reference numerals: 1. a vibration table; 2. a container; 21. a charging bucket; 22. covering the material; 23. an air exhaust hole; 3. a limiting ring; 4. a compression assembly; 41. pressing a plate; 42. erecting a rod; 43. a threaded segment; 44. a butterfly nut; 5. a vacuum device; 51. a vacuum tube; 6. a stirring device; 60. a connecting member; 601. an arc-shaped plate; 602. a locking structure; 6021. a first connecting plate; 6022. a second connecting plate; 6023. inserting a rod; 6024. dialing a plate; 6025. a strip-shaped hole; 6026. a limiting disc; 6027. a spring; 6028. shallow-groove; 603. a convex column; 604. a limiting strip; 61. a motor; 62. a reciprocating screw rod; 63. a guide bar; 64. a first moving cylinder; 641. a slot; 65. a second moving cylinder; 651. a chute; 66. a stirring blade; 67. a limiting rod; 671. a screw; 672. a nut; 68. a sliding sleeve; 69. and (7) connecting rings.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a theoretical maximum relative density instrument for an asphalt mixture.

Referring to fig. 1, the theoretical maximum relative density instrument for asphalt mixtures comprises a vibration table 1, wherein two containers 2 for containing asphalt mixtures are placed on the upper surface of the vibration table 1, each container 2 is sleeved with a limiting ring 3, the limiting rings 3 are fixedly connected to the upper surface of the vibration table 1, and a pressing assembly 4 which is pressed on the upper surfaces of the containers 2 is arranged in front of the two containers 2; the oscillating table 1 is also provided with a vacuum device 5 for evacuating the two containers 2.

Referring to fig. 1 and 2, container 2 includes that open side bucket 21, and bucket 21 is cylindrical, and the opening part lid of bucket 21 is equipped with material lid 22, and the one side of material lid 22 towards bucket 21 is provided with agitating unit 6, and agitating unit 6 is used for breaking up the bituminous mixture, is convenient for water to enter into in the clearance between the bituminous mixture.

Referring to fig. 2 and 3, the stirring device 6 includes a motor 61 fixedly connected to a surface of the material cover 22 facing the material barrel 21, the motor 61 being located at a central position of the material cover 22; the output shaft of the motor 61 is directed downward, the output shaft of the motor 61 is coaxially and fixedly connected with a reciprocating screw 62, one end of the reciprocating screw 62, which is far away from the motor 61, is fixedly connected with a guide rod 63, the guide rod 63 and the reciprocating screw 62 are arranged along the same straight line, the end surface of the guide rod 63 is polygonal, such as quadrilateral, hexagon and the like, in the embodiment, the section of the guide rod 63 is regular hexagon, and the section area of the guide rod 63 is larger than that of the end surface of the reciprocating screw 62; a first moving cylinder 64 is sleeved on the reciprocating screw rod 62, and the first moving cylinder 64 is in threaded connection with the reciprocating screw rod 62; a second moving cylinder 65 is sleeved on the guide rod 63, the second moving cylinder 65 is connected to the guide rod 63 in a sliding manner along the length direction of the guide rod 63, and one end, facing the first moving cylinder 64, of the second moving cylinder 65 is connected to the first moving cylinder 64 in a rotating manner; a plurality of stirring blades 66 are fixedly connected to the circumferential surface of the second moving cylinder 65, and the plurality of stirring blades 66 are circumferentially arranged around the axis of the second moving cylinder 65 at equal intervals; two vertically arranged limiting rods 67 are fixedly connected to one surface of the material cover 22 facing the material barrel 21, and the two limiting rods 67 are symmetrically arranged on two sides of the first moving barrel 64; every gag lever post 67 is all overlapped and is equipped with sliding sleeve 68, and linear bearing is chooseed for use to sliding sleeve 68, and sliding sleeve 68 slides along vertical direction and connects on gag lever post 67 to the outer peripheral face rigid coupling of sliding sleeve 68 is on first removal section of thick bamboo 64.

In order to prevent the end, far away from the material cover 22, of the limiting rod 67 from shaking easily, a screw 671 is coaxially and fixedly connected to the end, far away from the material cover 22, of the limiting rod 67, the end face diameter of the screw 671 is smaller than that of the limiting rod 67, a connecting ring 69 is sleeved on the second moving cylinder 65, the connecting ring 69 abuts against the end face, far away from the material cover 22, of the limiting rod 67, the screw 671 penetrates through the connecting ring 69, a nut 672 connected with the screw is sleeved on the screw 671, and the nut 672 abuts against one face, far away from the limiting rod 67, of the connecting ring 69.

Referring to fig. 2 and 3, in order to realize the rotational connection between the first moving cylinder 64 and the second moving cylinder 65, a connecting member 60 is provided between the first moving cylinder 64 and the second moving cylinder 65; the connecting piece 60 comprises two semicircular arc-shaped plates 601, the inner curved surface of each arc-shaped plate 601 is simultaneously attached to the peripheral surfaces of the first moving cylinder 64 and the second moving cylinder 65, the end parts of the two arc-shaped plates 601 are mutually abutted, and the abutted end parts of the two arc-shaped plates 601 are respectively provided with a locking structure 602, and the locking structures 602 are used for driving the two arc-shaped plates 601 to be stably connected together; referring to fig. 3 and 4, a convex column 603 is fixedly connected to the inner curved surface of each arc plate 601, a slot 641 is disposed on the circumferential surface of the first moving cylinder 64 corresponding to the convex column 603, and the convex column 603 is inserted into the slot 641; the inner curved surface of each arc plate 601 is fixedly connected with a semicircular annular limiting strip 604, the limiting strip 604 is located below the convex column 603, an annular sliding groove 651 is formed in the circumferential surface of the second moving cylinder 65, and the limiting strip 604 is located in the sliding groove 651.

Referring to fig. 3 and 4, the locking structure 602 includes a first connecting plate 6021 and a second connecting plate 6022 abutting against each other, the first connecting plate 6021 and the second connecting plate 6022 are respectively and fixedly connected to the end portions of the two arc-shaped plates 601 abutting against each other, the same insert rod 6023 is penetrated through the first connecting plate 6021 and the second connecting plate 6022, one end of the insert rod 6023 is fixedly connected with the dial plate 6024, the dial plate 6024 abuts against the side of the first connecting plate 6021 away from the second connecting plate 6022, a strip hole 6025 is penetrated through the first connecting plate 6021 toward the side of the dial plate 6024, the strip hole 6025 is perpendicular to the dial plate 6024, and the dial plate 6024 can penetrate through the first connecting plate 6021 via the strip hole 6025; the other end of the insert rod 6023 is fixedly connected with a limit disc 6026, the insert rod 6023 is sleeved with a spring 6027, two ends of the spring 6027 are respectively fixedly connected with the limit disc 6026 and the second connecting plate 6022, and the spring 6027 is used for driving the limit disc 6026 to be far away from the second connecting plate 6022, so that the first connecting plate 6021 and the second connecting plate 6022 are stably abutted together.

When the dial plate 6024 abuts against the surface of the first connecting plate 6021 facing away from the second connecting plate 6022, in order to restrict the dial plate 6024 from rotating about the axis of the insert stem 6023, the first connecting plate 6021 is provided with an elongated shallow groove 6028 facing the dial plate 6024, the shallow groove 6028 is provided perpendicular to the strip hole 6025, the depth of the shallow groove 6028 is smaller than the thickness of the first connecting plate 6021, and the dial plate 6024 is inserted into the shallow groove 6028.

Referring to fig. 1, the pressing assembly 4 includes a pressing plate 41 which is abutted against two material covers 22 on the side deviating from the material barrel 21, the pressing plate 41 is horizontally arranged, a vertical rod 42 vertically penetrates through the middle of the pressing plate 41, the lower end of the vertical rod 42 is fixedly connected to the upper surface of the vibrating table 1, the vertical rod 42 is located between the two limiting rings 3, a threaded section 43 is processed at the upper end of the vertical rod 42, a butterfly nut 44 is arranged on the threaded section 43, and the butterfly nut 44 is tightly attached to the side, deviating from the material covers 22, of the pressing plate 41.

The material cover 22 is provided with an air suction hole 23, the vacuum device 5 comprises a vacuum tube 51 and a vacuum pump, one end of the vacuum tube 51 is fixedly connected to the position of the material cover 22 provided with the air suction hole 23, the other end of the vacuum tube 51 is fixedly connected to the vacuum pump, and the vacuum pump is installed inside the vibration table 1.

The implementation principle of the theoretical maximum relative density instrument for the asphalt mixture in the embodiment of the application is as follows: the worker drives the reciprocating screw rod 62 and the guide rod 63 to synchronously rotate by starting the motor 61, and the second moving cylinder 65 rotates along with the guide rod 63 because the section of the guide rod 63 is polygonal, and at the moment, the stirring blade 66 horizontally stirs the asphalt mixture; because the first moving cylinder 64 is connected with the sliding sleeve 68, the sliding sleeve 68 is limited by the limiting rod 67 to rotate around the axis of the reciprocating screw rod 62, when the reciprocating screw rod 62 rotates, the first moving cylinder 64 and the reciprocating screw rod 62 rotate relatively, so that the first moving cylinder 64 is driven to reciprocate along the axis of the reciprocating screw rod 62, and the second moving cylinder 65 is driven to slide on the guide rod 63, so that the stirring blade 66 can stir the asphalt mixture in the vertical direction.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The theoretical maximum relative density instrument for the asphalt mixture is characterized in that: comprises a vibration table (1), a charging basket (21) arranged on the vibration table (1) and a charging cover (22) covering the opening of the charging basket (21), wherein a stirring device (6) for scattering asphalt mixture is arranged on one surface of the charging cover (22) facing the charging basket (21);

the stirring device (6) comprises a motor (61) vertically and fixedly connected to the material cover (22), a reciprocating screw rod (62) fixedly connected to an output shaft of the motor (61), a guide rod (63) fixedly connected to one end, far away from the motor (61), of the reciprocating screw rod (62) and provided with a polygonal section, a first moving cylinder (64) sleeved on the reciprocating screw rod (62) and in threaded connection with the reciprocating screw rod (62), a second moving cylinder (65) sleeved on the guide rod (63) and stirring blades (66) fixedly connected to the second moving cylinder (65), a connecting piece (60) for realizing rotary connection of the first moving cylinder (64) and the second moving cylinder (65) is arranged between the first moving cylinder (64) and the second moving cylinder, and a limiting assembly for limiting the first moving cylinder (64) to rotate is arranged on the material cover (22).

2. The theoretical maximum relative density of asphalt mixture according to claim 1, wherein: the connecting piece (60) comprises two arc-shaped plates (601) which are simultaneously encircled on the first moving cylinder (64) and the second moving cylinder (65), a convex column (603) and a semi-annular limiting strip (604) are fixedly connected to the inner curved surface of each arc-shaped plate (601), and locking structures (602) for stably connecting the two arc-shaped plates (601) are arranged at the opposite end parts of the two arc-shaped plates (601); the circumferential surface of the first moving cylinder (64) is provided with a slot (641) for inserting the convex column (603), and the circumferential surface of the second moving cylinder (65) is provided with an annular sliding groove (651) for accommodating the limiting strip (604).

3. The theoretical maximum relative density of asphalt mixture according to claim 2, wherein: the locking structure (602) comprises a first connecting plate (6021) and a second connecting plate (6022) which are fixedly connected to the end parts of the two arc-shaped plates (601) respectively, an insert rod (6023) which is arranged in the first connecting plate (6021) and the second connecting plate (6022) in a penetrating way, a shifting plate (6024) which is fixedly connected to one end of the insert rod (6023) and is abutted against the first connecting plate (6021), a limiting disc (6026) which is fixedly connected to the other end of the insert rod (6023), and a spring (6027) which is fixedly connected between the first connecting plate (6021) and the limiting disc (6026), wherein the spring (6027) is used for driving the limiting disc (6026) to be far away from the second connecting plate (6022); the first connecting plate (6021) is provided with a strip-shaped hole (6025) for allowing the shifting plate (6024) to pass through.

4. The theoretical maximum relative density of asphalt mixture according to claim 3, wherein: the first connecting plate (6021) is provided with a shallow groove (6028) for inserting the shifting plate (6024), and the shallow groove (6028) is crossed with the strip-shaped hole (6025).

5. The theoretical maximum relative density of asphalt mixture according to claim 1, wherein: the limiting assembly comprises two limiting rods (67) which are fixedly connected to the material cover (22) and distributed along the axial direction of the reciprocating screw rod (62), and each limiting ring (3) is sleeved with a sliding sleeve (68) fixed with the first moving cylinder (64).

6. The theoretical maximum relative density of asphalt mixture according to claim 5, wherein: the sliding sleeve (68) is a linear bearing.

7. The theoretical maximum relative density of asphalt mixture according to claim 5, wherein: one end of each of the two limiting rods (67), which is far away from the material cover (22), is provided with a connecting ring (69) which is sleeved on the second moving cylinder (65).

8. The theoretical maximum relative density of asphalt mixture as set forth in claim 7, wherein: every gag lever post (67) one end rigid coupling towards go up connecting ring (69) has screw rod (671) that runs through connecting ring (69), and threaded connection has nut (672) of tightly keeping away from gag lever post (67) in connecting ring (69) one side on screw rod (671).