CN218398827U - Rotary sealing device of concrete mixer truck - Google Patents
Rotary sealing device of concrete mixer truck Download PDFInfo
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- CN218398827U CN218398827U CN202123177900.8U CN202123177900U CN218398827U CN 218398827 U CN218398827 U CN 218398827U CN 202123177900 U CN202123177900 U CN 202123177900U CN 218398827 U CN218398827 U CN 218398827U
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Abstract
The utility model discloses a concrete mixer truck rotary sealing device. The mixer truck comprises a mixing barrel, and the rotary sealing device comprises a fixed sealing part, a movable sealing part and a follow-up device; the tail end of the stirring barrel is provided with a rotary ring; the fixed sealing part is fixedly arranged relative to a frame of the mixer truck and is used for sealing the upper half part of the opening at the tail end of the mixing tank; the movable sealing part is connected with the follow-up device and is used for sealing the lower half part of the opening at the tail end of the stirring barrel, namely the discharge hole; the follow-up device comprises a rotary connecting device and a friction plate arranged on the rotary connecting device, the rotary connecting device is used for realizing rotary connection relative to the axis of the stirring barrel and supporting the friction plate, and the friction plate is used for contacting with a rotary ring at the tail end of the stirring barrel so that the movable sealing part moves relative to the fixed sealing part to realize opening and closing of the discharge hole. The utility model has the advantages of simple structure, little abrasion, high working efficiency and the like.
Description
Technical Field
The utility model relates to a rotary sealing device for concrete mixer truck.
Background
Most of traditional trucd mixer agitator adopt open structure, have the poor scheduling problem of concrete heat preservation moisture retention. In order to solve the problems, a sealing structure of the stirring barrel based on a rotary sealing cover is provided in the prior art, for example, a swinging rotary sealing device is provided in the chinese patent of invention publication No. CN111283874a, "a swinging rotary sealing system", a sealing cover can rotate along with the stirring barrel under the action of the sealing device, and meanwhile, a discharge hole is formed in the sealing cover, so that when the discharge hole moves to the bottom, discharging can be performed.
However, this structure has the following problems: firstly, the rotary sealing cover has heavy weight, and needs large friction force to drive the rotary sealing cover to move, so that enough pressing force must be provided, and the abrasion is also increased by the large pressing force; secondly, when the discharge hole is far away from the discharge position, the rotary sealing cover needs to rotate for a period of time to be in place, and the working efficiency is affected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a concrete mixer truck rotary sealing device, its purpose: (1) The structure is simplified, the requirement of the rotary seal on the pressing force is reduced, and the abrasion is reduced; and (2) improving the opening and closing speed of the discharge hole.
The utility model discloses technical scheme as follows:
a concrete mixer truck rotary sealing device comprises a mixing barrel, and the rotary sealing device comprises a fixed sealing part, a movable sealing part and a follow-up device;
a rotary ring is arranged at the tail end of the stirring barrel;
the fixed sealing part is fixedly arranged relative to a frame of the mixer truck and is used for sealing the upper half part of the opening at the tail end of the mixing tank;
the movable sealing part is connected with the follow-up device and is used for sealing the lower half part of the opening at the tail end of the stirring barrel, namely the discharge hole;
the follow-up device comprises a rotary connecting device and a friction plate arranged on the rotary connecting device, the rotary connecting device is used for realizing rotary connection relative to the axis of the stirring barrel and supporting the friction plate, and the friction plate is used for being in contact with a rotary ring at the tail end of the stirring barrel so as to enable the movable sealing part to move relative to the fixed sealing part and further realize the opening and closing of the discharge hole;
the rotary sealing device also comprises a limiting device used for limiting the motion range of the follow-up device.
As a further improvement of the rotary sealing device: the follow-up device also comprises a driving mechanism for driving the friction plate to contact with the rotary ring.
As a further improvement of the rotary sealing device: the driving mechanism is a telescopic cylinder or a mechanical pressing mechanism.
As a further improvement of the rotary sealing device: the movable sealing part is a semi-sector/annular movable plate and a sealing rubber plate fixed at the edge of the movable plate.
As a further improvement of the rotary sealing device: the movable sealing part is a half-leaf/annular soft curtain, one end of the soft curtain is connected with the servo device, the other end of the soft curtain is connected with the fixed plate, and a stop lever used for stopping the soft curtain is further arranged on the fixed plate and positioned beside the other end of the soft curtain; and a pressure sealing belt is also arranged at the edge of the soft curtain.
As a further improvement of the rotary sealing device: the limiting device is a left limiting block and a right limiting block which are arranged on the frame of the agitating lorry.
As a further improvement of the rotary sealing device: the fixed sealing part is a semi-fan/annular fixed plate.
As a further improvement of the rotary sealing device: the fixing plate is provided with an air vent, and a sealing plate is arranged at the edge of the fixing plate.
As a further improvement of the rotary sealing device: the fixed plate is movably arranged on the frame to realize opening and closing actions relative to the tail end of the stirring barrel.
Compared with the prior art, the utility model discloses following beneficial effect has: (1) The fixed sealing part in the device is fixedly arranged relative to the frame, the movable sealing part is arranged at the tail part of the stirring barrel through the rotary connecting device, and the movable sealing part and the stirring barrel can be sealed without depending on pressing force, so that the device has a simple structure and long service life; (2) During discharging, the stirring barrel is controlled to rotate reversely by a certain angle, the movable sealing part is opened through the follow-up device, discharging can be achieved, the rotating stroke is small, the inertia of the movable sealing part is low, the opening and closing speed is high, and the working efficiency is improved; (3) The rotary power of the stirring barrel is utilized to drive the movable sealing part to act, an independent rotary driving device is not needed, the structure is simple, and the cost is low.
Drawings
FIG. 1 is a schematic structural view of a mixing tank and a follow-up device;
FIG. 2 is a schematic view of a closed state of the discharge hole according to the first embodiment;
FIG. 3 is a schematic view of the first embodiment in a state where the discharge port is opened;
FIG. 4 is a schematic view of the second embodiment in a state where the discharge port is closed;
fig. 5 is a schematic view of the second embodiment in a state where the discharge port is opened.
Detailed Description
The technical scheme of the utility model is explained in detail in the following with the attached drawings:
example one
Referring to fig. 1 to 3, a rotary sealing device of a concrete mixer truck is used for sealing an opening at the tail of a mixing drum 1. The rotary sealing device comprises a fixed sealing part, a movable sealing part and a follow-up device.
The tail end of the stirring barrel 1 is provided with a rotary ring 2.
The fixed sealing part is fixedly arranged relative to a frame 10 of the mixer truck and is used for sealing the upper half part of the opening at the tail end of the mixing tank 1. Specifically, the fixed sealing part is a semi-fan/annular fixed plate 8 mounted on the frame 10. The fixing plate 8 is further provided with a vent hole 12 for ventilation. Further, the fixed plate 8 is movably mounted on the frame 10 through a pin shaft, a bolt and the like, and can be opened, so that the inner part of the stirring barrel 1 is conveniently operated. The edge of the fixed plate 8 is provided with a sealing rubber plate.
The movable sealing part is connected with the follow-up device and is used for sealing the lower half part of the opening at the tail end of the stirring barrel 1, namely a discharge hole.
Wherein, the follow-up device comprises a rotary connecting device and a friction plate 6 arranged on the rotary connecting device.
The rotary connecting device is used for realizing rotary connection relative to the axis of the stirring barrel 1 and supporting the friction plate 6. In this embodiment, the rotation connection device includes a rotation support ring 3 sleeved on a central cylinder 7 in the stirring barrel 1 and a connection frame 4 connected to the rotation support ring 3.
The friction plate 6 is used for contacting with the rotary ring 2 at the tail end of the stirring barrel 1, so that the movable sealing part moves relative to the fixed sealing part to realize the opening and closing of the discharge hole.
Further, the follow-up device further comprises a driving mechanism for driving the friction plate 6 to be in contact with the slewing ring 2. In this embodiment, the driving mechanism is a telescopic cylinder 5 (an oil cylinder or an air cylinder or an electric push rod), and is installed on the connecting frame 4. The middle part of the friction plate 6 is rotationally connected with the connecting frame 4, the telescopic cylinder 5 is connected with the rear end of the friction plate 6, and the friction plate 6 is pushed to rotate and is contacted with or separated from the revolving ring 2. Except for debugging, maintenance and the like, the telescopic cylinder 5 is generally in an extension state, so that the friction plate 6 is kept in contact with the rotary ring 2.
The driving mechanism may be a mechanical component such as a bolt or a spring, or other similar devices that can make the friction plate 6 and the rotating ring 2 rotate together by using a pressure device such as air pressure or water pressure.
The movable sealing part is a semi-fan/annular movable plate 9 which is connected with the telescopic cylinder 5 or the connecting frame 4 or the rotary supporting ring 3. And a sealing rubber plate 15 is arranged at the edge of the movable plate 9 to realize sealing with the rotary ring 2.
When the friction plate 6 contacts the revolving ring 2 and the stirring barrel 1 is in a rotating state, the stirring barrel 1 can drive the movable plate 9 to rotate through the follow-up device, so that the opening and closing of the discharge port are realized.
The rotary sealing device further comprises a limiting device used for limiting the movement range of the follow-up device. Generally, the limiting devices are a left limiting block 11 and a right limiting block 11 which are arranged on a frame 10 of the mixer truck and used for blocking the telescopic cylinder 5 or the connecting frame 4.
The fixed plate 8, the movable plate 9 and the movable plate are sealed by sealing plates (only the sealing rubber plate 15 at the movable plate is marked in the figure, and in fact, a sealing plate with a similar form is also arranged at the edge of the fixed plate). The sealing plate may be rigid, flexible, or a combination of rigid and flexible.
As shown in fig. 2, when the vehicle runs, the stirring barrel 1 rotates clockwise, the follower keeps contact with the limiting block 11 on the left frame 10 under the action of the friction plate 6, the friction plate 6 and the rotary ring 2 move and rub with each other, and the movable plate 9 is in a closed state. Like fig. 3, when needing the ejection of compact, agitator 1 anticlockwise rotates, and movable plate 9 anticlockwise rotates under the effect of friction disc 6, and the discharge gate is opened, and agitator 1 continues to rotate afterwards, realizes the ejection of compact.
Example two
As shown in fig. 4 and 5, the present embodiment is different from the first embodiment in the structure of the movable sealing portion: the movable sealing part is a half-leaf/annular soft curtain 13, one end of the soft curtain 13 is connected with the servo device, the other end of the soft curtain is connected with the fixed plate 8, and a stop lever 14 used for stopping the soft curtain 13 is further arranged on the fixed plate 8 and beside the other end of the soft curtain 13.
An inflatable, deflatable pressure sealing strip 16 is provided at the outer edge of the curtain 13.
When the stirring barrel 1 rotates clockwise, the soft curtain 13 is unfolded, and the pressure sealing belt 16 is inflated to stretch and is in close contact with the revolving ring 2, so that the opening of the stirring barrel 1 is sealed; when the stirring barrel 1 rotates anticlockwise, the soft curtain 13 is folded, the pressure sealing strip 16 is deflated, folded and contracted, and the opening of the stirring barrel 1 is opened for discharging.
Claims (9)
1. The utility model provides a concrete mixer truck rotary seal device, the concrete mixer truck includes agitator (1), its characterized in that: the rotary sealing device comprises a fixed sealing part, a movable sealing part and a follow-up device;
the tail end of the stirring barrel (1) is provided with a rotary ring (2);
the fixed sealing part is fixedly arranged relative to a frame (10) of the mixer truck and is used for sealing the upper half part of the opening at the tail end of the mixing barrel (1);
the movable sealing part is connected with the follow-up device and is used for sealing the lower half part of the tail end opening of the stirring barrel (1), namely a discharge hole;
the follow-up device comprises a rotary connecting device and a friction plate (6) arranged on the rotary connecting device, the rotary connecting device is used for realizing rotary connection relative to the axis of the stirring barrel (1) and supporting the friction plate (6), the friction plate (6) is used for contacting with a rotary ring (2) at the tail end of the stirring barrel (1) so that the movable sealing part moves relative to the fixed sealing part to realize the opening and closing of the discharge hole;
the rotary sealing device also comprises a limiting device used for limiting the motion range of the follow-up device.
2. The concrete mixer truck rotary seal apparatus of claim 1, wherein: the follow-up device also comprises a driving mechanism for driving the friction plate (6) to be in contact with the rotary ring (2).
3. The concrete mixer truck rotary seal assembly according to claim 2, wherein: the driving mechanism is a telescopic cylinder (5) or a mechanical pressing mechanism.
4. The concrete mixer truck rotary seal apparatus of claim 1, wherein: the movable sealing part is a semi-fan/annular movable plate (9) and a sealing rubber plate (15) fixed on the edge of the movable plate (9).
5. The concrete mixer truck rotary seal apparatus of claim 1, wherein: the movable sealing part is a half-leaf/annular soft curtain (13), one end of the soft curtain (13) is connected with the follow-up device, the other end of the soft curtain is connected with the fixed plate (8), and a stop lever (14) used for stopping the soft curtain (13) is further arranged on the fixed plate (8) and beside the other end of the soft curtain (13); a pressure sealing strip (16) is also arranged at the edge of the soft curtain (13).
6. The concrete mixer truck rotary seal apparatus of claim 1, wherein: the limiting devices are a left limiting block and a right limiting block (11) which are arranged on a frame (10) of the mixer truck.
7. The concrete mixer truck rotary seal apparatus of any one of claims 1 to 6, wherein: the fixed sealing part is a semi-fan/annular fixed plate (8).
8. The concrete mixer truck rotary seal apparatus of claim 7, wherein: the fixing plate (8) is provided with a vent hole (12), and the edge of the fixing plate (8) is also provided with a sealing plate.
9. The concrete mixer truck rotary seal assembly according to claim 7, wherein: the fixed plate (8) is movably arranged on the frame (10) to realize the opening and closing action relative to the tail end of the stirring barrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123177900.8U CN218398827U (en) | 2021-12-17 | 2021-12-17 | Rotary sealing device of concrete mixer truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123177900.8U CN218398827U (en) | 2021-12-17 | 2021-12-17 | Rotary sealing device of concrete mixer truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218398827U true CN218398827U (en) | 2023-01-31 |
Family
ID=84997101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123177900.8U Active CN218398827U (en) | 2021-12-17 | 2021-12-17 | Rotary sealing device of concrete mixer truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218398827U (en) |
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2021
- 2021-12-17 CN CN202123177900.8U patent/CN218398827U/en active Active
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