CN105256854A - Excavator bucket suitable for construction of trapezoid channel and construction method - Google Patents
Excavator bucket suitable for construction of trapezoid channel and construction method Download PDFInfo
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- CN105256854A CN105256854A CN201510630735.7A CN201510630735A CN105256854A CN 105256854 A CN105256854 A CN 105256854A CN 201510630735 A CN201510630735 A CN 201510630735A CN 105256854 A CN105256854 A CN 105256854A
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Abstract
The invention discloses an excavator bucket suitable for construction of a trapezoid channel and a construction method and belongs to the field of engineering machinery. The excavator bucket is formed by an upper plane, a right vertical face, a left vertical face, a right bevel, a left bevel, a rear vertical face, a rear bevel and a lower plane in an enclosed mode. One face of the excavator bucket is open and toward an excavator. The outer end face of the upper plane is connected with an excavator arm base and outer reinforcing ribs. The lower end of an excavator front arm is connected with the arm base. The excavator bucket and the construction method are very suitable for excavation of the water channel with an inverted trapezoidal section. The water channel is formed in one time, so that earth of the side slopes of the channel is free of disturbance and damage, and accordingly the manual workload of post backfill, leveling, solid patting etc. for repairing the side slopes and a channel bottom is greatly reduced. The shape of the channel is flat, straight, regular, neat and uniform. The frost-resistant and the anti-seepage abilities of the channel are enhanced. The construction progress and the quality are significantly improved. Manpower is saved. The labor intensity is relieved. The service life of the channel is prolonged by above 40%. The construction cost is reduced by above 30%.
Description
Technical field
Of the present invention be applicable to trapezoidal channel construction bucket and construction method belong to engineering machinery field, particularly relate to a kind of excavator bucket.
Background technology
Construction of water conservancy works excavation water channel is the engineering of main peak discharge, utilizes excavator to excavate water channel very general.Because general excavator bucket is in bending staff shape, and water channel section is inverted trapezoidal, therefore at the bottom of the water channel canal that excavated of excavator and two side slopes still need manually to backfill in a large number, make real, the unnecessary earthwork of pruning, just can make it to be shaped, both labor intensive, the quality of water channel also cannot ensure.
Summary of the invention
The object of the invention is to propose a kind of bucket being applicable to trapezoidal channel construction, it disposablely can dig out the water channel of inverted trapezoidal section, and without the need to backfill, make real, it is regular standardized that canal shape is straight.The freeze proof seepage capability of channel is strengthened, and construction speed and quality significantly improve, and saves and manually reduces labor intensity, and increases channel service life, saves construction cost.Another object of the present invention is to propose a kind of construction method being suitable for this bucket.
An object of the present invention is to realize like this:
One, the structure of bucket and shape:
The bucket being applicable to trapezoidal channel construction is enclosed formed by upper plane, right facade, left facade, right tilted surface, left tilted surface, rear facade, back bevel, lower plane six plane, one side is uncovered towards excavator, wherein, upper and lower plane is rectangle, about upper plane, two minor faces are connected with the top of vertical right facade, left facade respectively, being connected with the right tilted surface of opposite tilt, the top of left tilted surface respectively below of right facade, left facade, being connected with two minor faces of lower plane respectively below of right tilted surface, left tilted surface.Rear facade is vertical hexagon, and parallel below on it, the upper length of side is short below, and the side first half is vertically, Lower Half opposite tilt.The rear long limit of upper plane is connected with the top of rear facade, and the top of the following and back bevel of rear facade is connected.Two vertical sides of rear facade are connected with the rear minor face of right facade, left facade respectively, and the side of two opposite tilts of rear facade is connected with the back of right tilted surface, left tilted surface respectively.Back bevel is inverted trapezoidal, and its two waist is connected with the back of right tilted surface, left tilted surface respectively.Lower plane two minor face is connected with right tilted surface, the following of left tilted surface respectively.Interior ribs is connected with at upper plane inner face, rear facade, back bevel, interval, lower plane upper surface.Be connected with excavator arm seat and outer ribs in upper plane outer face, excavator forearm lower end is even contained on arm seat.
Another object of the present invention is achieved in that
Construction method:
It is 1:1.5-1:1.25 gradient that trapezoidal bucket is applicable to side slope, channel height 45-200cm, the excavation of the trapezoidal channel of bottom width 40-200cm, can according to the different section size of design channel, excavator steering angle and excavator power, the trapezoidal bucket of the different size that changes the outfit.
Construction method one:
1. by ground levelling, by designing requirement, the above place mat earthwork in ground layer, all use road roller compacting for every layer, single monolayer thick controls at 30cm, the total place mat thickness after compacting reaches 60-80% of the profile height of design channel.Execute picture channel center line, sideline, both sides at the earthwork layer of topmost, excavator is installed corresponding trapezoidal bucket and is carried out excavation construction, one-shot forming;
2. artificial at the bottom of canal and both sides side slope to be repaired, make it the planeness reaching design;
3. at the bottom of canal and the side slope lay polystyrene board heat-insulatation material of both sides, benzene plate unit weight 18-20kg/m
3, cement mortar laid by benzene plate, puts cement pre-fabricated panel on mortar upper berth, jointing, do shrinkage joint process.
Construction method two:
1. construction method one is same as 1.;
2. construction method one is same as 2.;
3. at the bottom of canal and the side slope lay polystyrene board heat-insulatation material of both sides, benzene plate unit weight 16-22kg/m
3, the concrete that directly cast-in-place 8-12cm is thick on benzene plate, floating, conventional maintenance.
Construction method three:
1. by ground levelling, by designing requirement, ground above place mat gravel cubic meter of stone layer, all use road roller compacting for every layer, single monolayer thick controls at 30cm, and the total place mat thickness after compacting reaches the profile height of design channel.Execute picture channel center line, sideline, both sides at the gravel cubic meter of stone layer of topmost, the trapezoidal bucket that corresponding band bucket tooth installed by excavator carries out excavation construction, one-shot forming;
2. artificial at the bottom of canal and both sides side slope to be repaired, make it the planeness reaching design specifications;
3. at the bottom of canal and both sides side slope lay cement pre-fabricated panel, jointing, do shrinkage joint process; Or the thick concrete of cast-in-place 8-12cm, floating on the face of the gravel cubic meter of stone, jointing, do shrinkage joint process, conventional maintenance.
Above-mentioned construction method is all carried out according to following step: during excavation trapezoidal channel, must carry out according to the center line of channel setting-out and sideline, first excavate the canal bottom part at channel center
,stage excavation, cutting depth controls at 20-30cm, and excavation length controls at 3-5m.When the trapezoidal channel cross dimensions excavated is greater than trapezoidal bucket, must slope construction be carried out, first dig out one section of shaping channel, begin from the tail end left side bearing of this shaping channel, continue and to excavate by the order at left side bearing, right side bearing, center.In operation, the upper plane of trapezoidal bucket will remain level.
Owing to carrying out technique scheme, this bucket is just made to be very suitable for the excavation of inverted trapezoidal section water channel, it is once-forming, and the channel side slopes earthwork is destroyed from disturbance, greatly reduce the artificial later stage backfill, scabble, patch work amount at the bottom of the side slope to make real etc. and canal.It is regular standardized that canal shape is straight, and the freeze proof seepage capability of channel is strengthened, and construction speed and quality significantly improve, and save and manually reduce labor intensity, channel increases by more than 40% service life, and construction cost saves more than 30%.
Accompanying drawing illustrates: concrete structure of the present invention is provided by following drawings and Examples:
Fig. 1 is the bucket Facad structure schematic diagram being applicable to trapezoidal channel construction;
Fig. 2 is applicable to the bucket structure schematic diagram of trapezoidal channel construction.
Legend: 1, excavator forearm, 2, arm seat, 3, outer ribs, 4, right facade, 5, rear facade, 6, right tilted surface, 7, back bevel, 8, interior ribs, 9, lower plane, 10, left tilted surface, 11, upper plane, 12, left facade.
Detailed description of the invention: the present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
Embodiment:
One, the structure of bucket and shape:
As Fig. 1, shown in 2, be applicable to the bucket of trapezoidal channel construction by upper plane 11, right facade 4, left facade 12, right tilted surface 6, left tilted surface 10, rear facade 5, back bevel 7, lower plane 9 six planes enclose and form, one side is uncovered towards excavator, wherein, upper plane about 11 two minor face respectively with vertical right facade 4, the upper end-face edge of left facade 12 is connected, right facade 4, the lower edge of left facade 12 respectively with the right tilted surface 6 of opposite tilt, the upper end-face edge of left tilted surface 10 is connected, right tilted surface 6, the lower edge of left tilted surface 10 is connected with two minor faces of lower plane 9 respectively.Rear facade 5 is vertical hexagon, and on it, the length of side is short below, and the dual-side first half is vertically, Lower Half opposite tilt.A long limit of upper plane 11 is connected with a long limit order of rear facade 5, back bevel 7, two vertical minor faces of rear facade 5 are connected with a minor face of right facade 4, left facade 12 respectively, and the minor face of two opposite tilts of rear facade 5 is connected with the back edge of right tilted surface 6, left tilted surface 10 respectively.Back bevel 7 is inverted trapezoidal, and its two waist is connected with the back edge of right tilted surface 6, left tilted surface 10 respectively.On the inner face of upper plane 11, rear facade 5, back bevel 7, lower plane 9, interval is connected with vertically " ribs 8 in shape.Be connected with arm seat 2 and outer ribs 3 in upper plane 11 outer face, excavator forearm lower end is even contained on arm seat 2.
Construction method:
It is 1:1.5-1:1.25 gradient that trapezoidal bucket is applicable to side slope, channel height 45-200cm, the excavation of the trapezoidal channel of bottom width 40-200cm, can according to the different section size of design channel, excavator steering angle and excavator power, the trapezoidal bucket of the different size that changes the outfit.
Construction method one:
1. by ground levelling, by designing requirement, the above place mat earthwork in ground layer, all use road roller compacting for every layer, single monolayer thick controls at 30cm, the total place mat thickness after compacting reaches 60-80% of the profile height of design channel.Execute picture channel center line, sideline, both sides at the earthwork layer of topmost, excavator is installed corresponding trapezoidal bucket and is carried out excavation construction, one-shot forming;
2. artificial at the bottom of canal and both sides side slope to be repaired, make it the planeness reaching design;
3. at the bottom of canal and the side slope lay polystyrene board heat-insulatation material of both sides, benzene plate unit weight 18-20kg/m
3, cement mortar laid by benzene plate, puts cement pre-fabricated panel on mortar upper berth, jointing, do shrinkage joint process.
Construction method two:
1. construction method one is same as 1.;
2. construction method one is same as 2.;
3. at the bottom of canal and the side slope lay polystyrene board heat-insulatation material of both sides, benzene plate unit weight 16-22kg/m
3, the concrete that directly cast-in-place 8-12cm is thick on benzene plate, floating, conventional maintenance.
Construction method three:
1. by ground levelling, by designing requirement, ground above place mat gravel cubic meter of stone layer, all use road roller compacting for every layer, single monolayer thick controls at 30cm, and the total place mat thickness after compacting reaches the profile height of design channel.Execute picture channel center line, sideline, both sides at the gravel cubic meter of stone layer of topmost, the trapezoidal bucket that corresponding band bucket tooth installed by excavator carries out excavation construction, one-shot forming;
2. artificial at the bottom of canal and both sides side slope to be repaired, make it the planeness reaching design specifications;
3. at the bottom of canal and both sides side slope lay cement pre-fabricated panel, jointing, do shrinkage joint process; Or the thick concrete of cast-in-place 8-12cm, floating on the face of the gravel cubic meter of stone, jointing, do shrinkage joint process, conventional maintenance.
Above-mentioned construction method is all carried out according to following step: during excavation trapezoidal channel, must carry out according to the center line of channel setting-out and sideline, first excavate the canal bottom part at channel center
,stage excavation, cutting depth controls at 20-30cm, and excavation length controls at 3-5m.When the trapezoidal channel cross dimensions excavated is greater than trapezoidal bucket, must slope construction be carried out, first dig out one section of shaping channel, begin from the tail end left side bearing of this shaping channel, continue and to excavate by the order at left side bearing, right side bearing, center.In operation, the upper plane 11 of trapezoidal bucket will remain level.
Claims (6)
1. one kind is applicable to the bucket of trapezoidal channel construction, the structure of bucket and shape: by upper plane, right facade, left facade, right tilted surface, left tilted surface, rear facade, back bevel, lower plane six planes enclose and form, bucket one side is uncovered towards excavator, it is characterized in that: on, lower plane is rectangle, about upper plane two minor faces respectively with vertical right facade, the top of left facade is connected, right facade, left facade below respectively with the right tilted surface of opposite tilt, the top of left tilted surface is connected, right tilted surface, being connected with two minor faces of lower plane respectively below of left tilted surface, rear facade is vertical hexagon, and parallel below on it, the upper length of side is short below, and the side first half is vertically, Lower Half opposite tilt, the rear long limit of upper plane is connected with the top of rear facade, and the top of the following and back bevel of rear facade is connected, two vertical sides of rear facade are connected with the rear minor face of right facade, left facade respectively, and the side of two opposite tilts of rear facade is connected with the back of right tilted surface, left tilted surface respectively, back bevel is inverted trapezoidal, and its two waist is connected with the back of right tilted surface, left tilted surface respectively, lower plane two minor face is connected with right tilted surface, the following of left tilted surface respectively, interior ribs is connected with at upper plane inner face, rear facade, back bevel, interval, lower plane upper surface, be connected with excavator arm seat and outer ribs in upper plane outer face, excavator forearm lower end is even contained on arm seat.
2. be applicable to the bucket of trapezoidal channel construction as claimed in claim 1, it is characterized in that: interior ribs is " shape.
3. be applicable to a method for trapezoidal channel construction, it is characterized in that: construction method one:
1. by ground levelling, by designing requirement, the above place mat earthwork in ground layer, all use road roller compacting for every layer, single monolayer thick controls at 30cm, and the total place mat thickness after compacting reaches 60-80% of the profile height of design channel, executes picture channel center line, sideline, both sides at the earthwork layer of topmost, excavator is installed corresponding trapezoidal bucket and is carried out excavation construction, one-shot forming;
2. artificial at the bottom of canal and both sides side slope to be repaired, make it the planeness reaching design;
3. at the bottom of canal and the side slope lay polystyrene board heat-insulatation material of both sides, benzene plate unit weight 18-20kg/m
3, cement mortar laid by benzene plate, puts cement pre-fabricated panel on mortar upper berth, jointing, do shrinkage joint process.
4. be applicable to the method for trapezoidal channel construction as claimed in claim 3, it is characterized in that: construction method two:
1. construction method one is same as 1.;
2. construction method one is same as 2.;
3. at the bottom of canal and the side slope lay polystyrene board heat-insulatation material of both sides, benzene plate unit weight 16-22kg/m
3, the concrete that directly cast-in-place 8-12cm is thick on benzene plate, floating, conventional maintenance.
5. be applicable to the method for trapezoidal channel construction as claimed in claim 3, it is characterized in that: construction method three:
1. by ground levelling, by designing requirement, ground above place mat gravel cubic meter of stone layer, all use road roller compacting for every layer, single monolayer thick controls at 30cm, and the total place mat thickness after compacting reaches the profile height of design channel, executes picture channel center line, sideline, both sides at the gravel cubic meter of stone layer of topmost, the trapezoidal bucket that corresponding band bucket tooth installed by excavator carries out excavation construction, one-shot forming;
2. artificial at the bottom of canal and both sides side slope to be repaired, make it the planeness reaching design specifications;
3. at the bottom of canal and both sides side slope lay cement pre-fabricated panel, jointing, do shrinkage joint process; Or the thick concrete of cast-in-place 8-12cm, floating on the face of the gravel cubic meter of stone, jointing, do shrinkage joint process, conventional maintenance.
6. the method being applicable to trapezoidal channel construction as described in claim 3 or 4 or 5, it is characterized in that: above-mentioned construction method is all carried out according to following step: during excavation trapezoidal channel, carry out according to the center line of channel setting-out and sideline, first excavate the canal bottom part at channel center
,stage excavation, cutting depth controls at 20-30cm, and excavation length controls at 3-5m; When the trapezoidal channel cross dimensions excavated is greater than trapezoidal bucket, must slope construction be carried out, first dig out one section of shaping channel, begin from the tail end left side bearing of this shaping channel, continue and to excavate by the order at left side bearing, right side bearing, center; In operation, the upper plane of trapezoidal bucket remains level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630735.7A CN105256854A (en) | 2015-09-29 | 2015-09-29 | Excavator bucket suitable for construction of trapezoid channel and construction method |
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| CN201510630735.7A CN105256854A (en) | 2015-09-29 | 2015-09-29 | Excavator bucket suitable for construction of trapezoid channel and construction method |
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| CN105256854A true CN105256854A (en) | 2016-01-20 |
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| CN201510630735.7A Pending CN105256854A (en) | 2015-09-29 | 2015-09-29 | Excavator bucket suitable for construction of trapezoid channel and construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958230A (en) * | 2017-05-19 | 2017-07-18 | 山西省水利建筑工程局 | Dam slope U-shaped drainage ditch in earth dam downstream is excavated and lining cutting device |
| CN107574801A (en) * | 2016-07-05 | 2018-01-12 | 天津卡斯特机械有限公司 | A kind of practical excavator-type shovel clamshell excavator |
| CN108193728A (en) * | 2018-03-01 | 2018-06-22 | 河北科工建筑工程集团有限公司 | Channel shaping excavation device |
| CN109281286A (en) * | 2018-10-22 | 2019-01-29 | 浙江水利水电学院 | A kind of construction method of mountain area energy dissipating diversion channel |
| CN111395362A (en) * | 2020-03-23 | 2020-07-10 | 中电建十一局工程有限公司 | Construction method for quickly excavating and forming small-section channel by customized bucket |
| CN111945671A (en) * | 2020-07-27 | 2020-11-17 | 中电建十一局工程有限公司 | Construction method of concrete tooth wall at channel toe |
| CN113550268A (en) * | 2021-08-18 | 2021-10-26 | 广东洋晟建设工程有限公司 | Irrigation and water conservancy construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62112833A (en) * | 1985-11-12 | 1987-05-23 | Hazama Gumi Ltd | Excavating method for side-ditch for viscous soil |
| CN202519721U (en) * | 2012-05-04 | 2012-11-07 | 熔盛机械有限公司 | Digging bucket |
| CN203878638U (en) * | 2014-06-12 | 2014-10-15 | 中国水利水电第五工程局有限公司 | Bucket for excavating and quickly forming drainage ditch |
| CN104674853A (en) * | 2015-02-10 | 2015-06-03 | 华信咨询设计研究院有限公司 | Isolation trench |
| CN205100272U (en) * | 2015-09-29 | 2016-03-23 | 李新星 | Bucket suitable for construction of trapezoidal channel |
-
2015
- 2015-09-29 CN CN201510630735.7A patent/CN105256854A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62112833A (en) * | 1985-11-12 | 1987-05-23 | Hazama Gumi Ltd | Excavating method for side-ditch for viscous soil |
| CN202519721U (en) * | 2012-05-04 | 2012-11-07 | 熔盛机械有限公司 | Digging bucket |
| CN203878638U (en) * | 2014-06-12 | 2014-10-15 | 中国水利水电第五工程局有限公司 | Bucket for excavating and quickly forming drainage ditch |
| CN104674853A (en) * | 2015-02-10 | 2015-06-03 | 华信咨询设计研究院有限公司 | Isolation trench |
| CN205100272U (en) * | 2015-09-29 | 2016-03-23 | 李新星 | Bucket suitable for construction of trapezoidal channel |
Non-Patent Citations (1)
| Title |
|---|
| 买买江·木莎等: "新疆金沟河灌区渠道改建施工方法简介", 《西部探矿工程》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574801A (en) * | 2016-07-05 | 2018-01-12 | 天津卡斯特机械有限公司 | A kind of practical excavator-type shovel clamshell excavator |
| CN106958230A (en) * | 2017-05-19 | 2017-07-18 | 山西省水利建筑工程局 | Dam slope U-shaped drainage ditch in earth dam downstream is excavated and lining cutting device |
| CN108193728A (en) * | 2018-03-01 | 2018-06-22 | 河北科工建筑工程集团有限公司 | Channel shaping excavation device |
| CN109281286A (en) * | 2018-10-22 | 2019-01-29 | 浙江水利水电学院 | A kind of construction method of mountain area energy dissipating diversion channel |
| CN109281286B (en) * | 2018-10-22 | 2020-09-15 | 浙江水利水电学院 | Construction method of energy dissipation diversion channel in mountainous area |
| CN111395362A (en) * | 2020-03-23 | 2020-07-10 | 中电建十一局工程有限公司 | Construction method for quickly excavating and forming small-section channel by customized bucket |
| CN111945671A (en) * | 2020-07-27 | 2020-11-17 | 中电建十一局工程有限公司 | Construction method of concrete tooth wall at channel toe |
| CN111945671B (en) * | 2020-07-27 | 2021-07-09 | 中电建十一局工程有限公司 | Construction method of concrete tooth wall at channel toe |
| CN113550268A (en) * | 2021-08-18 | 2021-10-26 | 广东洋晟建设工程有限公司 | Irrigation and water conservancy construction method |
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