CN108442707B - Building site is pouring pipe location distributing device for mobile concrete pump - Google Patents
Building site is pouring pipe location distributing device for mobile concrete pump Download PDFInfo
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- CN108442707B CN108442707B CN201810248625.8A CN201810248625A CN108442707B CN 108442707 B CN108442707 B CN 108442707B CN 201810248625 A CN201810248625 A CN 201810248625A CN 108442707 B CN108442707 B CN 108442707B
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- positioning
- pouring pipe
- concrete pump
- fixed
- distributing device
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
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- Mechanical Engineering (AREA)
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a pouring pipe positioning and distributing device for a concrete pump truck in a construction site, which comprises a travelling mechanism, a supporting mechanism, a positioning disc and an angle adjusting mechanism, wherein the supporting mechanism is connected to the travelling mechanism, the travelling mechanism drives the supporting mechanism to horizontally move along a preset track, one end of the supporting mechanism is far away from the travelling mechanism, the angle adjusting mechanism is fixed at one end, far away from the travelling mechanism, of the supporting mechanism, the positioning disc is fixed on the angle adjusting mechanism, the angle adjusting mechanism is used for adjusting the size of an included angle between the axis of the positioning disc and the horizontal plane, a hole is formed in the center of the positioning disc, and a plurality of positioning bolts which are uniformly distributed along the circumferential direction are arranged outside the positioning. The invention has the advantages that the manual positioning by hands is not needed in the material distribution process, so that the physical strength of workers can be saved, the work in a severe environment is avoided, the efficiency is improved, and the spraying position and the spraying angle of the pouring pipe can be adjusted through the angle adjusting mechanism, so that the material distribution is more uniform.
Description
Technical Field
The invention relates to the field of construction equipment, in particular to a pouring pipe positioning and distributing device for a concrete pump truck in a construction site.
Background
The concrete pump truck electric control system mainly has five mechanical, hydraulic, electromechanical electric control type, programmable controller type and logic circuit control type control modes, and the operation system of the concrete pump truck is mainly used for controlling the flow rate of the main hydraulic pump and the rotating speed of an engine so as to change the concrete discharge amount of the pump truck.
Original mobile concrete pump is in the use, the staff controls the operation panel and controls the arm in the car, come to carry out the work of pouring of concrete to required area, the place that needs to use mobile concrete pump usually all is in very high place, because pour the hose of tub bottom plastics material, so pour the pipe and remove slightly, will sway about receiving high altitude wind-force influence, need many people to embrace the hose usually or fix with the rope and carry out the mode of pulling, confirm the ejection of compact direction of hose, this kind of mode not only very consumes physical power, and the workman is too close with pouring the pipe, operational environment is very abominable.
Disclosure of Invention
The invention aims to provide a pouring pipe positioning and distributing device for a concrete pump truck in a construction site, which aims to solve the problems in the background technology.
The technical scheme of the invention is as follows: comprises a running mechanism, a supporting mechanism, a positioning disc and an angle adjusting mechanism, wherein the supporting mechanism is connected on the running mechanism, the running mechanism drives the supporting mechanism to horizontally move along a preset track, one end of the supporting mechanism is far away from the running mechanism, the angle adjusting mechanism is fixed at one end of the supporting mechanism far away from the running mechanism, the positioning disc is fixed on the angle adjusting mechanism, through angle adjustment mechanism adjusts contained angle size between the axis of positioning disk and the horizontal plane, the center department of positioning disk has seted up a hole, and the outside of positioning disk is equipped with along circumference evenly distributed's a plurality of positioning bolt, and positioning bolt spiro union is on the positioning disk, thereby positioning bolt can insert the downthehole of positioning disk center department along the radial movement of positioning disk when the exogenic action down rotates, pours the pipe and alternates in the downthehole of positioning disk center department and establish through supporting of a plurality of positioning bolt and fix it on the positioning disk.
In a preferred embodiment of the present invention, the traveling mechanism includes a frame, the frame is provided with wheels and a power device for driving the wheels to rotate, and the power device is disposed on a side of the bottom of the frame away from the supporting mechanism for balancing the gravity of the supporting mechanism.
In a preferred embodiment of the invention, the supporting mechanism comprises an upright post vertically arranged at the center of the top of the travelling mechanism, a cantilever horizontally extending to the outer side of the travelling mechanism is arranged at the top of the upright post, a horizontally arranged triangular plate is connected to the end part of the cantilever, fixing plates vertically extending downwards are welded at three corners of the triangular plate, a pair of reinforcing plates are welded between adjacent fixing plates, and a pair of reinforcing columns are welded between the cantilever and the pair of reinforcing plates forming an included angle with the cantilever.
In a preferred embodiment of the present invention, the angle adjusting mechanism includes three guide rails, the three guide rails are respectively fixed on the inner side of a fixed plate, each guide rail is provided with a slide block, the fixed plate is provided with a driving device corresponding to each slide block for driving the slide block to vertically move along the guide rail, the positioning disk is arranged between the three guide rails, at least one connecting rod is arranged between the positioning disk and each slide block, and two ends of the connecting rod are respectively hinged on the positioning disk and the slide block.
In a preferred embodiment of the present invention, a hole for a pouring tube to pass through is formed at the center of the triangular plate.
In a preferred embodiment of the invention, the driving device comprises a motor fixed at the bottom of the fixing plate and a pulley fixed at the top of the fixing plate, a toothed belt is installed between the pulley and a main shaft of the motor, two ends of the toothed belt are fixed on the sliding blocks, and the toothed belt is sleeved on the pulley and the main shaft of the motor.
In a preferred embodiment of the present invention, two pairs of toothed belt positioning sets are disposed on the front end surface of the slider, each toothed belt positioning set includes a first positioning portion and a second positioning portion that are disposed at an interval, one opposite side of each of the first positioning portion and the second positioning portion is respectively provided with a tooth surface and a smooth surface, the toothed belt is clamped between the first positioning portion and the second positioning portion after bypassing the first positioning portion, the inner side surface of the toothed belt is engaged with the tooth surface, and the outer side surface of the toothed belt is abutted against the smooth surface.
In a preferred embodiment of the present invention, two connecting rods are disposed between the positioning plate and each sliding block, integrally formed outer lugs are disposed on two sides of the top of the sliding block, and the top ends of the two connecting rods corresponding to the sliding blocks are respectively hinged and fixed on one outer lug through two hinge shafts.
In a preferred embodiment of the invention, three lugs are uniformly distributed along the circumferential direction on the outer part of the positioning plate, and the bottoms of two connecting rods corresponding to the lugs are hinged and fixed on one lug through a hinge shaft.
The invention provides a pouring pipe positioning and distributing device for a concrete pump truck on a construction site through improvement, and compared with the prior art, the pouring pipe positioning and distributing device has the following improvement and advantages:
(1) will pour the pipe interlude on the positioning disk through the manual work, it is fixed to pour the pipe through a plurality of positioning bolt, during the ejection of compact, drive supporting mechanism through running gear and remove along predetermined orbit, perhaps through remote control equipment control running gear's removal orbit, carry out the cloth to the local blowout concrete of needs, the in-process of cloth need not artifical in person to go the location, consequently can save workman's physical power, avoids working under abominable environment, raises the efficiency.
(2) The axis of positioning disk accessible angle adjustment mechanism control positioning disk and the contained angle size between the horizontal plane to this adjustment is pour the injection position and the injection angle of pipe, and the cloth is more even.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a partial schematic view of the first embodiment of the present invention;
FIG. 3 is a schematic view of a puck structure according to the present invention;
FIG. 4 is a second partial schematic view of the present invention;
FIG. 5 is a partial enlarged view of FIG. 4;
FIG. 6 is a second enlarged view of a portion of FIG. 4;
description of reference numerals: the positioning device comprises a positioning plate 1, a positioning bolt 1a, an appendage 1b, an angle adjusting mechanism 2, a guide rail 2a, a slide block 2b, an outer ear 2b1, a connecting rod 2c, a pouring pipe 3, a frame 4a, wheels 4b, a stand column 5a, a cantilever 5b, a triangular plate 5c, a fixing plate 5d, a reinforcing plate 5e, a reinforcing column 5f, a motor 6a, a toothed belt 6b, a toothed belt positioning group 6c, a first positioning part 6c1 and a second positioning part 6c 2.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 6, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a pouring pipe positioning and distributing device for a concrete pump truck on a construction site through improvement, as shown in figures 1-6, the pouring pipe positioning and distributing device comprises a travelling mechanism, a supporting mechanism, a positioning disc 1 and an angle adjusting mechanism 2, wherein the supporting mechanism is connected to the travelling mechanism, the travelling mechanism drives the supporting mechanism to horizontally move along a preset track, one end of the supporting mechanism is far away from the travelling mechanism, the angle adjusting mechanism 2 is fixed at one end, far away from the travelling mechanism, of the supporting mechanism, the positioning disc 1 is fixed on the angle adjusting mechanism 2, the included angle between the axis of the positioning disc 1 and the horizontal plane is adjusted through the angle adjusting mechanism 2, a hole is formed in the center of the positioning disc 1, a plurality of positioning bolts 1a which are uniformly distributed along the circumferential direction are arranged outside the positioning disc 1, the positioning bolts 1a are in threaded connection with the positioning disc 1, and the positioning bolts 1a can move along the radial direction of the positioning disc 1 while rotating under the In the downthehole of positioning disk 1 center department, pour pipe 3 and alternate in the downthehole of positioning disk 1 center department and fix it on positioning disk 1 through propping of a plurality of positioning bolt 1a and establishing.
The working process of the concrete pump truck comprises the steps that after the concrete pump truck stops, the pouring pipe 3 hangs down, the pouring pipe 3 is inserted into the positioning disc 1 manually, the pouring pipe 3 is fixed through the plurality of positioning bolts 1a, when discharging is conducted, the travelling mechanism drives the supporting mechanism to move along a preset track, or the travelling mechanism is controlled through remote control equipment to move the track, concrete is sprayed out of a needed place to be distributed, in addition, the positioning disc 1 can control the size of an included angle between the axis of the positioning disc 1 and the horizontal plane through the angle adjusting mechanism 2, the spraying position and the spraying angle of the pouring pipe 3 are adjusted, and the distribution is more uniform.
Preferably, the traveling mechanism comprises a frame 4a, the frame 4a is provided with wheels 4b and a power device for driving the wheels 4b to rotate, and the power device is arranged on one side of the bottom of the frame 4a, which is far away from the supporting mechanism, so as to balance the gravity of the supporting mechanism and prevent the traveling mechanism from toppling.
Preferably, the supporting mechanism is including erectting the stand 5a that sets up in running gear top center department, stand 5a top is equipped with the cantilever 5b that the level stretches out to the running gear outside, cantilever 5b end connection has the set-square 5c that a level set up, the welding of three angle departments of set-square 5c has vertical downwardly extending's fixed plate 5d, in order to be used for installation angle adjustment mechanism 2, the welding has a pair of reinforcing plate 5e between the adjacent fixed plate 5d, in order to be used for strengthening the stability between the fixed plate 5d, the welding has a pair of enhancement post 5f between cantilever 5b and the pair of reinforcing plate 5e that constitutes the contained angle with cantilever 5b, in order to be used for strengthening the stability of set-square 5 c.
Preferably, angle adjustment mechanism 2 includes three guide rail 2a, and three guide rail 2a is fixed respectively in the inboard of a fixed plate 5d, all is equipped with a slider 2b on every guide rail 2a, corresponds every slider 2b on the fixed plate 5d and all locates a drive arrangement who is used for driving slider 2b along guide rail 2a vertical migration, positioning disk 1 sets up between three guide rail 2a, all is equipped with at least one connecting rod 2c between positioning disk 1 and every slider 2b, and the both ends of connecting rod 2c articulate respectively on positioning disk 1 and slider 2 b. The principle of the angle adjusting mechanism 2 is that three independent driving devices are used for driving one sliding block 2b to move independently respectively, the positioning disc 1 is dragged to move through the connecting rod 2c, the three driving devices drive the three sliding blocks 2b to move different distances respectively, so that the positioning disc 1 is inclined and displaced, and the spraying position and the spraying angle of the pouring pipe 3 can be adjusted.
Preferably, since the casting pipe 3 is vertically suspended, a hole through which the casting pipe 3 passes is opened at the center of the triangular plate 5 c.
Preferably, the driving device comprises a motor 6a fixed at the bottom of the fixing plate 5d and a pulley fixed at the top of the fixing plate 5d, a toothed belt 6b is installed between the pulley and a main shaft of the motor 6a, two ends of the toothed belt 6b are fixed on the sliding block 2b, the toothed belt 6b is sleeved on the pulley and the main shaft of the motor 6a, the sliding block 2b is pulled to move through the toothed belt 6b when the motor 6a rotates, and the transmission of the toothed belt 6b is more accurate and stable.
Preferably, two pairs of toothed belt positioning sets 6c are arranged on the front end face of the slider 2b, each toothed belt positioning set 6c comprises a first positioning portion 6c1 and a second positioning portion 6c2 which are arranged at intervals, a tooth surface and a smooth surface are respectively arranged on one opposite side of each first positioning portion 6c1 and one opposite side of each second positioning portion 6c2, the toothed belt 6b is clamped between the first positioning portion 6c1 and the second positioning portion 6c2 after bypassing the first positioning portion 6c1, the inner side face of the toothed belt 6b is meshed with the tooth surface, the outer side face of the toothed belt 6b is abutted against the smooth surface, and the toothed belt 6b is fixed in a fixing mode, and the fixing mode is more convenient to install and disassemble.
Preferably, two connecting rods 2c are arranged between the positioning plate 1 and each sliding block 2b, the two sides of the top of the sliding block 2b are provided with integrally formed outer lugs 2b1, and the top ends of the two connecting rods 2c corresponding to the sliding block 2b are respectively hinged and fixed on one outer lug 2b1 through two hinge shafts.
Preferably, three lugs 1b are uniformly distributed along the circumferential direction on the outer part of the positioning plate 1, and the bottoms of two connecting rods 2c corresponding to the lugs 1b are hinged and fixed on one lug 1b through a hinge shaft.
The detailed working process of the invention comprises the following steps: after the concrete pump truck stops, the pouring pipe 3 hangs down, the pouring pipe 3 firstly passes through the triangular plate 5c and then passes through the positioning disc 1 manually, a small section of the pouring pipe 3 is reserved below the positioning disc 1, and the positioning bolts 1a are abutted against the pouring pipe 3 and fixed through screwing of the positioning bolts 1 a; when discharging, the power device drives the wheels 4b at the bottom of the frame 4a to rotate, so that the traveling mechanism drives the supporting mechanism to move along a preset track, and the moving track of the traveling mechanism can also be controlled by remote control equipment; in the moving process, the pouring pipe 3 sprays concrete to distribute the material, and the spraying position and the spraying angle of the pouring pipe 3 are controlled in real time through the angle adjusting mechanism 2, so that the material distribution is more uniform; the specific working principle of the angle adjusting mechanism 2 is that three independent driving devices are used for driving one sliding block 2b to move independently respectively, the positioning disk 1 is dragged to move through the connecting rod 2c, the three driving devices drive the three sliding blocks 2b to move different distances respectively, so that the positioning disk 1 is inclined and displaced, and the adjustment of the spraying position and the spraying angle is realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a building site concrete pump truck is with pouring pipe location distributing device, includes running gear, supporting mechanism connects on running gear, its characterized in that: the positioning device is characterized by further comprising a positioning disk (1) and an angle adjusting mechanism (2), wherein the traveling mechanism drives the supporting mechanism to horizontally move along a preset track, one end of the supporting mechanism is far away from the traveling mechanism, the angle adjusting mechanism (2) is fixed at the end, far away from the traveling mechanism, of the supporting mechanism, the positioning disk (1) is fixed on the angle adjusting mechanism (2), the angle adjusting mechanism (2) is used for adjusting the size of an included angle between the axis of the positioning disk (1) and the horizontal plane, a hole is formed in the center of the positioning disk (1), a plurality of positioning bolts (1 a) which are uniformly distributed along the circumferential direction are arranged outside the positioning disk (1), the positioning bolts (1 a) are in threaded connection with the positioning disk (1), the positioning bolts (1 a) can rotate under the external force effect and can be inserted into the holes in the center of the positioning disk (1) along the radial movement of the positioning disk (1, the pouring pipe (3) is inserted into a hole in the center of the positioning disc (1) and fixed on the positioning disc (1) through the abutting of a plurality of positioning bolts (1 a).
2. The pouring pipe positioning and distributing device for the concrete pump truck for the construction site as claimed in claim 1, wherein: the traveling mechanism comprises a frame (4 a), wheels (4 b) and a power device for driving the wheels (4 b) to rotate are arranged on the frame (4 a), and the power device is arranged on one side, far away from the supporting mechanism, of the bottom of the frame (4 a) and used for balancing the gravity of the supporting mechanism.
3. The pouring pipe positioning and distributing device for the concrete pump truck for the construction site as claimed in claim 1, wherein: the supporting mechanism is including erectting stand (5 a) that sets up in running gear top center department, stand (5 a) top is equipped with level cantilever (5 b) that stretches out to the running gear outside, cantilever (5 b) end connection has set-square (5 c) that a level set up, the welding of three angle department of set-square (5 c) has vertical downwardly extending's fixed plate (5 d), the welding has a pair of reinforcing plate (5 e) between adjacent fixed plate (5 d), the welding has a pair of enhancement post (5 f) between cantilever (5 b) and a pair of reinforcing plate (5 e) that constitute the contained angle with cantilever (5 b).
4. The pouring pipe positioning and distributing device for the concrete pump truck for the construction site as claimed in claim 3, wherein: angle adjustment mechanism (2) include three guide rail (2 a), and three guide rail (2 a) are fixed respectively in the inboard of a fixed plate (5 d), all are equipped with one slider (2 b) on every guide rail (2 a), correspond every slider (2 b) on fixed plate (5 d) and all locate one and be used for driving slider (2 b) along the drive arrangement of guide rail (2 a) vertical migration, positioning disk (1) sets up between three guide rail (2 a), all is equipped with at least one connecting rod (2 c) between positioning disk (1) and every slider (2 b), and the both ends of connecting rod (2 c) articulate respectively on positioning disk (1) and slider (2 b).
5. The pouring pipe positioning and distributing device for the concrete pump truck for the construction site as claimed in claim 3, wherein: the center of the triangular plate (5 c) is provided with a hole for the pouring pipe (3) to pass through.
6. The pouring pipe positioning and distributing device for the concrete pump truck for the construction site as claimed in claim 4, wherein: drive arrangement is including fixing motor (6 a) of fixed plate (5 d) bottom, and fix the pulley at fixed plate (5 d) top installs toothed belt (6 b) between the main shaft of pulley and motor (6 a), and toothed belt (6 b) both ends are fixed on slider (2 b), and toothed belt (6 b) suit is on the main shaft of pulley and motor (6 a).
7. The pouring pipe positioning and distributing device for the concrete pump truck for the construction site as claimed in claim 6, wherein: two pairs of toothed belt positioning groups (6 c) are arranged on the front end face of the sliding block (2 b), each toothed belt positioning group (6 c) comprises a first positioning portion (6 c 1) and a second positioning portion (6 c 2) which are arranged at intervals, a toothed surface and a smooth surface are respectively arranged on one opposite side of each first positioning portion (6 c 1) and one opposite side of each second positioning portion (6 c 2), the toothed belt (6 b) bypasses the first positioning portions (6 c 1) and then is clamped between the first positioning portions (6 c 1) and the second positioning portions (6 c 2), the inner side face of the toothed belt (6 b) is meshed with the toothed surface, and the outer side face of the toothed belt (6 b) is abutted against the smooth surface.
8. The pouring pipe positioning and distributing device for the concrete pump truck for the construction site as claimed in claim 4, wherein: two connecting rods (2 c) are arranged between the positioning disc (1) and each sliding block (2 b), the two sides of the top of each sliding block (2 b) are provided with integrally-formed outer ears (2 b 1), and the top ends of the two connecting rods (2 c) corresponding to the sliding blocks (2 b) are respectively hinged and fixed on one outer ear (2 b 1) through two hinged shafts.
9. The pouring pipe positioning and distributing device for the concrete pump truck for the construction site as claimed in claim 8, wherein: three auxiliary lugs (1 b) which are uniformly distributed along the circumferential direction are arranged on the outer part of the positioning plate (1), and the bottoms of two connecting rods (2 c) corresponding to the auxiliary lugs (1 b) are hinged and fixed on the auxiliary lugs (1 b) through a hinge shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248625.8A CN108442707B (en) | 2018-03-24 | 2018-03-24 | Building site is pouring pipe location distributing device for mobile concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248625.8A CN108442707B (en) | 2018-03-24 | 2018-03-24 | Building site is pouring pipe location distributing device for mobile concrete pump |
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| CN108442707A CN108442707A (en) | 2018-08-24 |
| CN108442707B true CN108442707B (en) | 2020-04-24 |
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| CN201810248625.8A Active CN108442707B (en) | 2018-03-24 | 2018-03-24 | Building site is pouring pipe location distributing device for mobile concrete pump |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714617A (en) * | 2019-10-29 | 2020-01-21 | 山东汇富建设集团建筑工业有限公司 | Novel concrete distributing machine and distributing method thereof |
| CN113833274A (en) * | 2020-06-23 | 2021-12-24 | 东宏建设有限责任公司 | Rotary concrete pouring equipment |
| CN113585086B (en) * | 2021-08-22 | 2022-09-02 | 中交一公局集团有限公司 | Concrete pouring device for box girder construction technology |
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| US6202013B1 (en) * | 1998-01-15 | 2001-03-13 | Schwing America, Inc. | Articulated boom monitoring system |
| CN202370255U (en) * | 2011-09-19 | 2012-08-08 | 华南理工大学 | Mixed blanking construction device for block type waste concrete |
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| CN206722413U (en) * | 2017-05-10 | 2017-12-08 | 谢长友 | A kind of concreting stitching integrated machine |
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| CN103195249A (en) * | 2012-01-09 | 2013-07-10 | 中联重科股份有限公司 | Concrete pumping equipment and pouring end hose thereof |
| CN203475845U (en) * | 2013-08-01 | 2014-03-12 | 徐州徐工施维英机械有限公司 | 3-freedom-degree adjustable chute positioning device for concrete mixing and transportation vehicle |
| CN203640300U (en) * | 2013-11-14 | 2014-06-11 | 山推楚天工程机械有限公司 | Hose tracking device |
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| CN108442707A (en) | 2018-08-24 |
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Effective date of registration: 20200402 Address after: Room 203-204, Zhengtong commercial and residential building, 65 Renmin South Road, Lecheng City, Shaoguan City, Guangdong Province Applicant after: Lechang Jianxin Construction Engineering Co., Ltd Address before: 100081 School of mechanical and electrical engineering, Beijing Institute of Technology, 5 South Avenue, Beijing, Haidian District, Zhongguancun Applicant before: Zhu Bei |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |