CA1066267A - Mixing blades of concrete mixing drums - Google Patents
Mixing blades of concrete mixing drumsInfo
- Publication number
- CA1066267A CA1066267A CA315,002A CA315002A CA1066267A CA 1066267 A CA1066267 A CA 1066267A CA 315002 A CA315002 A CA 315002A CA 1066267 A CA1066267 A CA 1066267A
- Authority
- CA
- Canada
- Prior art keywords
- mixing
- charging
- leg portion
- lip
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
- B28C5/4203—Details; Accessories
- B28C5/4268—Drums, e.g. provided with non-rotary mixing blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
A B S T R A C T
In a rotary concrete mixing drum having an inner wall defining a mixing chamber which includes a mixing section and a charging throat section, said drum having a head end and an open charging end arranged at opposite ends thereof, said drum being mounted for rotation about a mixing axis extending between said head end and said discharge end, said charging throat section extending inwardly from said charging end to said mixing section, mixing blade means mounted on and extending spirally along said inner wall from adjacent said charging end to adjacent said head end, said mixing blades having a mixing face directed toward said head end and the discharge face directed toward said charging end, the portion of the mixing face extending within the charging throat section being a charging face, the improvement wherein said mixing blade comprises a leg portion projecting inwardly from said inner wall, a discharge lip portion projecting laterally from an inner end of said leg portion in a direction toward said charging end, said leg portion and said discharge portion being connected to one another before said leg portion is secured to said inner wall of said chamber, a mixing lip projecting laterally from said charging face of said leg portion in a direction toward said head end, said mixing lip extending over at least a major portion of said mixing section inwardly from said charging throat section, said mixing lip being secured to said leg portion by welding thereto after said leg portion is secured to said inner wall of said chamber such that said mixing lip does not inhibit mounting of the leg portion within said chamber.
In a rotary concrete mixing drum having an inner wall defining a mixing chamber which includes a mixing section and a charging throat section, said drum having a head end and an open charging end arranged at opposite ends thereof, said drum being mounted for rotation about a mixing axis extending between said head end and said discharge end, said charging throat section extending inwardly from said charging end to said mixing section, mixing blade means mounted on and extending spirally along said inner wall from adjacent said charging end to adjacent said head end, said mixing blades having a mixing face directed toward said head end and the discharge face directed toward said charging end, the portion of the mixing face extending within the charging throat section being a charging face, the improvement wherein said mixing blade comprises a leg portion projecting inwardly from said inner wall, a discharge lip portion projecting laterally from an inner end of said leg portion in a direction toward said charging end, said leg portion and said discharge portion being connected to one another before said leg portion is secured to said inner wall of said chamber, a mixing lip projecting laterally from said charging face of said leg portion in a direction toward said head end, said mixing lip extending over at least a major portion of said mixing section inwardly from said charging throat section, said mixing lip being secured to said leg portion by welding thereto after said leg portion is secured to said inner wall of said chamber such that said mixing lip does not inhibit mounting of the leg portion within said chamber.
Description
66'~7 FIELD OF INVENTION
, .. .
This inv~ntion relates to improvements in rotary concrete mixing drums. In particular this invention relates to improvements in the mixing blades of a rotary concrete mixing drum.
PRIOR ART
In the construction industry it is important to minimize the amount of time required in order to thoroughly mix concre~e in a mlxing drum. In a transit mixer, it is frequently necessary to add water to the concrete mixture at a job si~e in order to provide concrete in a consistency which is somewhat different to that originally charged into the mixing drum. Thus, it is important to ensure that a rapid mixing of water with concrete can be achieved in the mixing drum. It is also important to ensure that during the charging operation, concrete is transmitted away from -the charging throat into the mixing section as quickly as possible. I have previously used a prefabricated T-shaped blade in an attempt to obtain an efficient rapid mixing. The T-shaped blad~s which have been previou ly used were pre-fabricated and considerable difficulty was experienced in --;
attempting to weld these blades in position in a mixing drum.
Furthermore, I found that there was a distinct tendency for concrete to accumulate behind the mixing lip of the T shaped blade. This concrete tended to build up and set 80 that the efficiency of the mixing blade was progressively decreased.
I'his problem is particularly accute in the throat area of the mixing drum where the proportions of the drum are so small as to make $t extremely difficult to obtain access to the underside of the mixing blade in order to remove an accumulated build up.
.. : . - . . . ' . ' ' ' ~ ' .~
~ lU~i626'7 I have now discovered that the adv~ntages to be derived from the provision of a mixing lip can be obtained by limiting the extent of the mixing lip so that it extends in the mixing chæmber only and does not extend in the throat area. I have overcome the difficulties previoucly encountered in attempting to moun~ the mixing blade by firstly locating an L-shaped blade in the housing and thereafter : connecting the discharge lip to the L-shaped blade.
SUMMARY OF INVENTION
According to one aspect of the present inv~ntion there is provided in a rotary concrete drum having an inner wall defining a mixing chamber which includes a mixing section and a charging throat section, said drum having a head end and an open charging end arranged at opposite ends thereof, ~aid drum being mounted for rotation about a mixing axis extending between said head end and said discharge end, said charging throat section extending inwardly from said charging end to said mixing ~ection, mixing blade means mounted on and extending spirally along said inner wall from adjacent said charging end to adjacent said head end, said mixing blades having a mixing face directed ;~: :
toward said head end and the discharge face directed toward said charging end, the portion of the mixing face extending within the charging throat section being a charging face, the improve- ~:
ment wherein -~aid mixing blade comprises; a leg portion projecting inwardly from ~aid inner wall, a discharge lip portion projecting laterally from an inner end of said leg portion in a direction toward said charging end, said leg portion and said discharge portion being connected to one another before said leg portion is secured to said inner :
~66Z67 wall of said chamber, a mixing lip projecting laterally from said mixing face of said leg portion in a direction toward said head end, said mixing lip extending ovPr at least a major portion of said mixing section inwardly from said charging throat section, said mixing lip being secured to said leg portion by welding thereto after said leg portion is secured to said inner wall of said chamber such that said mixing lip does not inhibit mounting of the leg portion within said chamber. ~
According to a further aspect of the present invention, ~.
there is provided a method of forming a mixing blade in a --rotary concrete mixing drum having an inner wall defining a : .:
mixing chamber which includes a mixing section and a charging :
throat section, said chamber having a head end and an open discharge end disposed opposite one another comprising the steps of; preforming a plurality of mixing blade segments, each having a leg portion and a discharge lip portion pro~ect- .:
ing laterally from one end thereof, welding said leg portion of said mixing blade to the inner wall of said chamber with -said mixing blade segments arranged in an end-to-end spiral . ~ .
configuration extending from adjacent said head end to adjacent ~ ; .
aid open discharge end with the discharge lip of each segment directed toward said discharge end, and thereafter welding the mixing lip to said one end of said leg portion, said mixing lip projecting laterally from said leg portion .~
and extending along at a major portion of said mixing section :~
of said mixing chamber. .
The invention will be more clearly understood after . :
reference to the following detailed specification read in conjunction with the drawings wherein;
Fig. 1 is a side view of a trans~t mixer of the type ,. ~' ,' . :
in which the mixing blade o the present invention may be : employed, Fig. 2 is a sectional side view of a mixing drum and Fig. 3 is a sectional view along the line 3-3 of Fig.
, .. .
This inv~ntion relates to improvements in rotary concrete mixing drums. In particular this invention relates to improvements in the mixing blades of a rotary concrete mixing drum.
PRIOR ART
In the construction industry it is important to minimize the amount of time required in order to thoroughly mix concre~e in a mlxing drum. In a transit mixer, it is frequently necessary to add water to the concrete mixture at a job si~e in order to provide concrete in a consistency which is somewhat different to that originally charged into the mixing drum. Thus, it is important to ensure that a rapid mixing of water with concrete can be achieved in the mixing drum. It is also important to ensure that during the charging operation, concrete is transmitted away from -the charging throat into the mixing section as quickly as possible. I have previously used a prefabricated T-shaped blade in an attempt to obtain an efficient rapid mixing. The T-shaped blad~s which have been previou ly used were pre-fabricated and considerable difficulty was experienced in --;
attempting to weld these blades in position in a mixing drum.
Furthermore, I found that there was a distinct tendency for concrete to accumulate behind the mixing lip of the T shaped blade. This concrete tended to build up and set 80 that the efficiency of the mixing blade was progressively decreased.
I'his problem is particularly accute in the throat area of the mixing drum where the proportions of the drum are so small as to make $t extremely difficult to obtain access to the underside of the mixing blade in order to remove an accumulated build up.
.. : . - . . . ' . ' ' ' ~ ' .~
~ lU~i626'7 I have now discovered that the adv~ntages to be derived from the provision of a mixing lip can be obtained by limiting the extent of the mixing lip so that it extends in the mixing chæmber only and does not extend in the throat area. I have overcome the difficulties previoucly encountered in attempting to moun~ the mixing blade by firstly locating an L-shaped blade in the housing and thereafter : connecting the discharge lip to the L-shaped blade.
SUMMARY OF INVENTION
According to one aspect of the present inv~ntion there is provided in a rotary concrete drum having an inner wall defining a mixing chamber which includes a mixing section and a charging throat section, said drum having a head end and an open charging end arranged at opposite ends thereof, ~aid drum being mounted for rotation about a mixing axis extending between said head end and said discharge end, said charging throat section extending inwardly from said charging end to said mixing ~ection, mixing blade means mounted on and extending spirally along said inner wall from adjacent said charging end to adjacent said head end, said mixing blades having a mixing face directed ;~: :
toward said head end and the discharge face directed toward said charging end, the portion of the mixing face extending within the charging throat section being a charging face, the improve- ~:
ment wherein -~aid mixing blade comprises; a leg portion projecting inwardly from ~aid inner wall, a discharge lip portion projecting laterally from an inner end of said leg portion in a direction toward said charging end, said leg portion and said discharge portion being connected to one another before said leg portion is secured to said inner :
~66Z67 wall of said chamber, a mixing lip projecting laterally from said mixing face of said leg portion in a direction toward said head end, said mixing lip extending ovPr at least a major portion of said mixing section inwardly from said charging throat section, said mixing lip being secured to said leg portion by welding thereto after said leg portion is secured to said inner wall of said chamber such that said mixing lip does not inhibit mounting of the leg portion within said chamber. ~
According to a further aspect of the present invention, ~.
there is provided a method of forming a mixing blade in a --rotary concrete mixing drum having an inner wall defining a : .:
mixing chamber which includes a mixing section and a charging :
throat section, said chamber having a head end and an open discharge end disposed opposite one another comprising the steps of; preforming a plurality of mixing blade segments, each having a leg portion and a discharge lip portion pro~ect- .:
ing laterally from one end thereof, welding said leg portion of said mixing blade to the inner wall of said chamber with -said mixing blade segments arranged in an end-to-end spiral . ~ .
configuration extending from adjacent said head end to adjacent ~ ; .
aid open discharge end with the discharge lip of each segment directed toward said discharge end, and thereafter welding the mixing lip to said one end of said leg portion, said mixing lip projecting laterally from said leg portion .~
and extending along at a major portion of said mixing section :~
of said mixing chamber. .
The invention will be more clearly understood after . :
reference to the following detailed specification read in conjunction with the drawings wherein;
Fig. 1 is a side view of a trans~t mixer of the type ,. ~' ,' . :
in which the mixing blade o the present invention may be : employed, Fig. 2 is a sectional side view of a mixing drum and Fig. 3 is a sectional view along the line 3-3 of Fig.
2.
With reference to the drawings, reference numeral 10 refers gen~rally to a rotar~ concrete mixing drum which has a wall 12 defining a chamber 14. The chamber 14 ha~ a head end 16 and an open discharge end 18 ar~anged opposite one another. The mixing drum 10 is mounted for rotation about an axis 20 which extends longitudinally between the head end 16 and the discharge opening 18. The chamber 14 includes a mixing section 14a and a throat section 14b. Throat section 14b extend~ from the front end o~ the full fill line 15 which repre~ent the level to which the chamber 14 can be filled with concrete for transportatlon purposes. The throat section 14b decreases in diameter toward the discharge open~ng 18.
Mixing blades 22 extend spirally of the inner wall of the ch~mber-~4-from~adjacent the discharge opening 18 to adjacent the head end 16. The mixing blade~ 22 each include a leg portion 24 and a discharge lip 26, the leg portion 24 is welded at its radially outex end along weld seams 28 and 30 to the wall 12 of the chamher 14. The leg portion 24 has a mixing face 32 directed toward the head end of the chamher and a discharge face 34 directed to the discharge end. The dicharge lip 26 projects laterally from the inner end of the leg 26 in a direction toward the discharge end 18. It will be noted that the mixing blades 22 are formed in a pluxality of sections 36 which are arranged in an end-to-end relationship ~6~Z~ii7 and extend spirally along the inner wall of the mixing chamber 14. In each segment 36, the leg portion 24 and discharge lip 26 are integrally connected to one another, the lip 26 being formed by bending the panel from which the leg and lip are formed.
A mixing lip 38 is welded to the inner end of the leg portion 2~ along weld seams 40 and 42 and projects laterally outwardly therefrom ~oward the head end of the mixing chamber.
The mixing lip extends along the mixing blade from adjacent the charging section 14a over at least a major portion of the mixing section as shown in Fig. 2 of the drawings. It will be noted that the weld seam 40 is readily accessible from within the mixing chamber so that the mixing lip 38 can be easily secured to the mixing blade in situ. The mixing lip 38 does not extend into the throat section with the result tha~ concrete does not accumulate on the charging face of the blades in the throat area.
In the manufacture of the mixing drum, a plurality of segments of mixing blade 38 are folded to a generally L~shaped configuration to provide the leg portion 24 and the mixing lip 26. The segments are located within the mixing drum and welded to the wall 12 along seam lines 28 and 30 in an end-to-end ~piral configuration with the discharge lip 26 directed toward the discharge end 18. Thereafter, a length of flat stock steel i8 formed to a generally spiral con-figuration and the required shape of the mixing lip and is welded along weld seam 40 to the inner end of the leg 24 of the mixing blades 20 over a major portion of the length of the mixing section.
In use, when the rotary mixing drum i9 rotated in '' . ,' . '. " ' .: : ' ' '' '' ' . ' ,', ''' :' ~L~66Z~
the mixing and charging directions, the mixing lip serves to drive the load of conore~e inwardly toward the head end of the mixing section.
From the foregoing it will be apparent that the present invention provides a simple and inexpensive mehcanism which serves to improve the speed with which a rotary concrete , mixing drum ca~ mix in addatives such as water or the like~
.
With reference to the drawings, reference numeral 10 refers gen~rally to a rotar~ concrete mixing drum which has a wall 12 defining a chamber 14. The chamber 14 ha~ a head end 16 and an open discharge end 18 ar~anged opposite one another. The mixing drum 10 is mounted for rotation about an axis 20 which extends longitudinally between the head end 16 and the discharge opening 18. The chamber 14 includes a mixing section 14a and a throat section 14b. Throat section 14b extend~ from the front end o~ the full fill line 15 which repre~ent the level to which the chamber 14 can be filled with concrete for transportatlon purposes. The throat section 14b decreases in diameter toward the discharge open~ng 18.
Mixing blades 22 extend spirally of the inner wall of the ch~mber-~4-from~adjacent the discharge opening 18 to adjacent the head end 16. The mixing blade~ 22 each include a leg portion 24 and a discharge lip 26, the leg portion 24 is welded at its radially outex end along weld seams 28 and 30 to the wall 12 of the chamher 14. The leg portion 24 has a mixing face 32 directed toward the head end of the chamher and a discharge face 34 directed to the discharge end. The dicharge lip 26 projects laterally from the inner end of the leg 26 in a direction toward the discharge end 18. It will be noted that the mixing blades 22 are formed in a pluxality of sections 36 which are arranged in an end-to-end relationship ~6~Z~ii7 and extend spirally along the inner wall of the mixing chamber 14. In each segment 36, the leg portion 24 and discharge lip 26 are integrally connected to one another, the lip 26 being formed by bending the panel from which the leg and lip are formed.
A mixing lip 38 is welded to the inner end of the leg portion 2~ along weld seams 40 and 42 and projects laterally outwardly therefrom ~oward the head end of the mixing chamber.
The mixing lip extends along the mixing blade from adjacent the charging section 14a over at least a major portion of the mixing section as shown in Fig. 2 of the drawings. It will be noted that the weld seam 40 is readily accessible from within the mixing chamber so that the mixing lip 38 can be easily secured to the mixing blade in situ. The mixing lip 38 does not extend into the throat section with the result tha~ concrete does not accumulate on the charging face of the blades in the throat area.
In the manufacture of the mixing drum, a plurality of segments of mixing blade 38 are folded to a generally L~shaped configuration to provide the leg portion 24 and the mixing lip 26. The segments are located within the mixing drum and welded to the wall 12 along seam lines 28 and 30 in an end-to-end ~piral configuration with the discharge lip 26 directed toward the discharge end 18. Thereafter, a length of flat stock steel i8 formed to a generally spiral con-figuration and the required shape of the mixing lip and is welded along weld seam 40 to the inner end of the leg 24 of the mixing blades 20 over a major portion of the length of the mixing section.
In use, when the rotary mixing drum i9 rotated in '' . ,' . '. " ' .: : ' ' '' '' ' . ' ,', ''' :' ~L~66Z~
the mixing and charging directions, the mixing lip serves to drive the load of conore~e inwardly toward the head end of the mixing section.
From the foregoing it will be apparent that the present invention provides a simple and inexpensive mehcanism which serves to improve the speed with which a rotary concrete , mixing drum ca~ mix in addatives such as water or the like~
.
Claims (4)
1. In a rotary concrete mixing drum having an inner wall defining a mixing chamber which includes a mixing section and a charging throat section, said drum having a head end and an open charging end arranged at opposite ends thereof, said drum being mounted for rotation about a mixing axis extending between said head end and said discharge end, said charging throat section extending inwardly from said charging end to said mixing section, mixing blade means mounted on and extending spirally along said inner wall from adjacent said charging end to adjacent said head end, said mixing blades having a mixing face directed toward said head end and the discharge face directed toward said charging end, the portion of the mixing face extending within the charging throat section being a charging face, the improvement wherein said mixing blade comprises ;
(a) a leg portion projecting inwardly from said inner wall, (b) a discharge lip portion projecting laterally from an inner end of said leg portion in a direction toward said charging end, said leg portion and said discharge portion being connected to one another before said leg portion is secured to said inner wall of said chamber, (c) a mixing lip projecting laterally from said charging face of said leg portion in a direction toward said head end, said mixing lip extending over at least a major portion of said mixing section inwardly from said charging throat section, said mixing lip being secured to said leg portion by welding thereto after said leg portion is secured to said inner wall of said chamber such that said mixing lip does not inhibit mounting of the leg portion within said chamber,.
(a) a leg portion projecting inwardly from said inner wall, (b) a discharge lip portion projecting laterally from an inner end of said leg portion in a direction toward said charging end, said leg portion and said discharge portion being connected to one another before said leg portion is secured to said inner wall of said chamber, (c) a mixing lip projecting laterally from said charging face of said leg portion in a direction toward said head end, said mixing lip extending over at least a major portion of said mixing section inwardly from said charging throat section, said mixing lip being secured to said leg portion by welding thereto after said leg portion is secured to said inner wall of said chamber such that said mixing lip does not inhibit mounting of the leg portion within said chamber,.
2. A rotary concrete mixing drum as claimed in Claim 1 wherein said leg portion, discharge lip and mixing lip are arranged in a generally Y-shaped configuration and said charging lip is secured to said leg portion by a welding seam extending along the radially inwardly exposed intersection of said mixing lip and said discharging lip.
3. A rotary concrete mixing drum as claimed in Claim 1 or Claim 2 wherein said leg portion and said discharge lip of said mixing blade are formed from a unitary panel folded upon itself to a generally L-shaped configuration.
4. A method of forming a mixing blade in a rotary concrete mixing drum having an inner wall defining a mixing chamber which includes a mixing section and a charging throat section, said chamber having a head end and an open discharge end disposed opposite one another comprising the steps of;
(a) preforming a plurality of mixing blade segments, each having a leg portion and a discharge lip portion projecting laterally from one end thereof, (b) welding said leg portion of said mixing blade to the inner wall of said chamber with said mixing blade segments arranged in an end-to-end spiral configuration extending from adjacent said head end to adjacent said open discharge end with the discharge lip of each segment directed toward said discharge end, and thereafter (c) welding a mixing lip to said one end of said leg portion, said mixing lip projecting laterally from said leg portion and extending along at least a major portion of said mixing section of said mixing chamber, inwardly from said charging throat.
(a) preforming a plurality of mixing blade segments, each having a leg portion and a discharge lip portion projecting laterally from one end thereof, (b) welding said leg portion of said mixing blade to the inner wall of said chamber with said mixing blade segments arranged in an end-to-end spiral configuration extending from adjacent said head end to adjacent said open discharge end with the discharge lip of each segment directed toward said discharge end, and thereafter (c) welding a mixing lip to said one end of said leg portion, said mixing lip projecting laterally from said leg portion and extending along at least a major portion of said mixing section of said mixing chamber, inwardly from said charging throat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA315,002A CA1066267A (en) | 1978-10-31 | 1978-10-31 | Mixing blades of concrete mixing drums |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA315,002A CA1066267A (en) | 1978-10-31 | 1978-10-31 | Mixing blades of concrete mixing drums |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1066267A true CA1066267A (en) | 1979-11-13 |
Family
ID=4112777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA315,002A Expired CA1066267A (en) | 1978-10-31 | 1978-10-31 | Mixing blades of concrete mixing drums |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1066267A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4504151A (en) * | 1981-05-18 | 1985-03-12 | Michigan Disposal, Inc. | Apparatus for the treatment of waste sludge |
| US4517888A (en) * | 1980-10-14 | 1985-05-21 | Challenge-Cook Brothers, Inc. | Food processor |
| US5884998A (en) * | 1996-10-02 | 1999-03-23 | Maxim Trucks | Front discharge transit mixer |
| US6062716A (en) * | 1997-11-21 | 2000-05-16 | Tic United Corp. | Front-end discharge concrete mixer truck |
| CN102555060A (en) * | 2011-05-27 | 2012-07-11 | 中联重科股份有限公司 | Concrete mixing transport vechicle and churn blade structure thereof |
| CN102825147A (en) * | 2012-08-24 | 2012-12-19 | 梁山县杨嘉挂车制造有限公司 | Blade of transit mixing truck, blade punching die and a manufacturing method using punching die |
| CN103406993A (en) * | 2013-05-17 | 2013-11-27 | 北汽福田汽车股份有限公司 | Stirring arm, stirring device and stirrer |
| CN104070293A (en) * | 2014-06-29 | 2014-10-01 | 柳州美纳机械有限公司 | Welding technology for stirring tanks |
-
1978
- 1978-10-31 CA CA315,002A patent/CA1066267A/en not_active Expired
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4517888A (en) * | 1980-10-14 | 1985-05-21 | Challenge-Cook Brothers, Inc. | Food processor |
| US4504151A (en) * | 1981-05-18 | 1985-03-12 | Michigan Disposal, Inc. | Apparatus for the treatment of waste sludge |
| US5884998A (en) * | 1996-10-02 | 1999-03-23 | Maxim Trucks | Front discharge transit mixer |
| US5954429A (en) * | 1996-10-02 | 1999-09-21 | Silbernagel; Fred J. | Front discharge transit mixer with movable rear drum mount |
| US6123444A (en) * | 1996-10-02 | 2000-09-26 | Maxim Trucks | Front discharge transit mixer with weight system for determining amount of material discharged |
| US6152457A (en) * | 1996-10-02 | 2000-11-28 | Maxim Trucks | Front discharge transit mixer |
| US7101075B2 (en) | 1996-10-02 | 2006-09-05 | Silbernagel Fred J | Method of changing the weight distribution loading on a front discharge transit mixer |
| US6062716A (en) * | 1997-11-21 | 2000-05-16 | Tic United Corp. | Front-end discharge concrete mixer truck |
| CN102555060A (en) * | 2011-05-27 | 2012-07-11 | 中联重科股份有限公司 | Concrete mixing transport vechicle and churn blade structure thereof |
| CN102825147A (en) * | 2012-08-24 | 2012-12-19 | 梁山县杨嘉挂车制造有限公司 | Blade of transit mixing truck, blade punching die and a manufacturing method using punching die |
| CN103406993A (en) * | 2013-05-17 | 2013-11-27 | 北汽福田汽车股份有限公司 | Stirring arm, stirring device and stirrer |
| CN104070293A (en) * | 2014-06-29 | 2014-10-01 | 柳州美纳机械有限公司 | Welding technology for stirring tanks |
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