CN108612311A - A kind of die type concrete pump pipe fixing device and its application method - Google Patents
A kind of die type concrete pump pipe fixing device and its application method Download PDFInfo
- Publication number
- CN108612311A CN108612311A CN201810431203.4A CN201810431203A CN108612311A CN 108612311 A CN108612311 A CN 108612311A CN 201810431203 A CN201810431203 A CN 201810431203A CN 108612311 A CN108612311 A CN 108612311A
- Authority
- CN
- China
- Prior art keywords
- fixed block
- concrete pump
- template
- pump pipe
- fixing device
- 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.)
- Pending
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Classifications
-
- 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
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
- E04G21/0454—Devices for both conveying and distributing with distribution hose with booms with boom vibration damper mechanisms
-
- 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
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0472—Details of connection of the hose to the formwork, e.g. inlets
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to engineering construction field, solves the problems, such as that concrete transfer pump tube fixing device is nonstandard and make, take a lot of work and be easy vibrations loosening, have the effect of not easy to fall off.In order to achieve the above objectives, the invention discloses a kind of die type concrete pump pipe fixing devices, including at least two fixed blocks, the fixed block is arranged in the template for pouring build floor, the sum of lower surface of the fixed block is more than the reserved opening in template, and through-hole is vertically arranged on the fixed block；The fixed block is provided through the tightening screw rod of through-hole, one end that the tightening screw rod is located at below fixed block is provided with crotch, the end of the crotch is against the lower surface of template, the nut with draw ring being threaded on the tightening screw rod above fixed block；The centre of the fixed block offer for concrete pump pipe fitting across limiting slot.By the cooperation of fixed block and tightening screw rod, being detachably connected for fixing device and template, the recoverable of fixing device are realized.
Description
Technical field
The present invention relates to engineering construction fields, more specifically, it relates to a kind of die type concrete pump pipe fixing device
And its application method.
Background technology
The concreting of skyscraper needs to be transported to the position for needing to pour by concrete pump pipe, and pump line is pouring
It needs successively up to be fixed on floor before concrete.
When carrying out concrete casting, there is larger vibration, it can be to the template of the floor and construction layer built up
Support system damages, and needs to reinforce concrete pump pipe thus.Currently, traditional reinforced concrete pump line work,
It is that the gap between concrete pump pipe and floor slab preformed hole mouth is inserted into using wooden wedge.
Pump will produce vibration at work, therefore concrete pump pipe can also vibrate, since wooden wedge material is hard, when mixed
When solidifying soil pump line vibration, wooden wedge can also follow vibration, but since wooden wedge is not fixedly connected with concrete pump pipe, coagulation
There are relative displacement between native pump line and wooden wedge, cause between reserved opening and concrete pump pipe there are gap, while timber wedge
For a long time by that can be deformed after the extruding of concrete pump pipe and floor, wooden wedge is just easy to fall off son, and there are fixing devices to be easy to take off
The problem of falling, and causing pump line displacement, booster.
Invention content
In view of the deficienciess of the prior art, it is an object of the present invention to provide a kind of die type concrete pump pipes to consolidate
Determine device, has the effect of not easy to fall off.
To realize the above-mentioned technical purpose, the present invention provides following technical solutions：A kind of die type concrete pump pipe is fixed
Device, including at least two fixed blocks are provided with the template for pouring build floor below the fixed block, the fixed block
The sum of lower surface is more than the reserved opening in template, and through-hole is vertically arranged on the fixed block；
The fixed block is provided through the tightening screw rod of through-hole, and one end that the tightening screw rod is located at below fixed block is set
It is equipped with crotch, the end of the crotch is located at the lower section of template, is threaded with above fixed block on the tightening screw rod
Nut；
The centre of the fixed block offer for concrete pump pipe fitting across limiting slot.
By using above-mentioned technical proposal, fixed block is closed up and is placed in template, and tightening screw rod is inserted into through-hole, rotation
Tight nut makes crotch end abut template lower surface, and the lower surface of nut is close to the upper surface of fixed block, realize fixing device
With being fixedly connected for template, concrete pump pipe is inserted into limiting slot, you can concrete is led in the fixation for realizing concrete pump pipe
It crosses concrete pump pipe to transport above template and form floor, unclamps again nut at this time, just fixing device can be dismantled and be supplied down
Secondary use.By the cooperation of tightening screw rod, template and fixed block, realizes fixing device and template is relatively fixed, avoid work
When making, fixing device falls off.Since fixed block and reserved opening contact fit closely, while concrete pump pipe uniformly being enclosed
Hold together, low to the loss of fixing device in the concrete pump pipe course of work, fixing device can be used for a long time, and extend fixed dress
The service life set.It is the being completely embedded property of controllable fixing device and template by nut, achieves effect easy to disassemble.
Preferably, the contact surface of the reserved opening of the fixed block and floor is set as slope, slope and vertical direction
Angle be 0 ° -45 °.
By using above-mentioned technical proposal, when concrete pump tube vibration, after fixed block is by the extruding of concrete pump pipe,
Active force is transmitted at slope, and in the slope surface between 0 ° -45 °, most of active force will be passed to coagulation along slope surface vertical direction
Tulou plate, fraction upwardly extends (this component is extrusion force) along line of slope, therefore the extrusion force of floor feedback is small, avoids
Fixing device is extruded reserved opening, reduces the load of nut and crotch, fixing device is avoided to fall off, achieve enhancing structure
The advantageous effect of stability.
Preferably, the bending place of the crotch and the angle of horizontal direction are 30 ° -75 °.
By using above-mentioned technical proposal, when crotch is close to template lower surface, when fixing device is squeezed, crotch is same
Sample can be will produce the trend of deformation by active force, crotch under active force, the angle of crotch and horizontal direction 30-75 ° it
Between, it is ensured that most of active force vertically transmits, and crotch is avoided to deform, and leads to the presence of sky between crotch and template
Gap achieves the advantageous effect for further enhancing structural soundness.
Preferably, the end of the crotch is provided with the abutting bar parallel with template.
By using above-mentioned technical proposal, the lower surface that bar replaces crotch contact template is abutted, crotch and template are increased
Contact area, abut bar share the active force that crotch is subject to, further enhance structural soundness.
Preferably, being fixedly installed vertical draw ring on the nut, the upper end of the tightening screw rod is located in draw ring.
By using above-mentioned technical proposal, rotation draw ring can drive nut rotation, need not be rotated again by tool
Nut.When dismantling fixed block, crotch is turned to the underface of fixed block, then pull up draw ring, you can fixed block is taken out,
Achieve the advantageous effect for improving simple operation.
Preferably, the fixed block is made of reproducible material, the reproducible material includes rubber and plastics.
By using above-mentioned technical proposal, fixed block after the extruding of floor and concrete pump pipe for a long time by can become
Shape, leads between fixed block and concrete pump pipe that there are gaps, can melt fixed block remake at this time, make fixed block
It can be continuing with, not generate waste material, achieve the advantageous effect for reducing cost.
Preferably, the fixed block is made of timber, the contact surface setting of the reserved opening of the fixed block and floor
There are cushion pad, the surface equally fitting of the limiting slot to be provided with cushion pad, the cushion pad is made of reproducible material.
By using above-mentioned technical proposal, cushion pad after the extruding of floor and concrete pump pipe for a long time by can become
Shape, leads between fixed block and concrete pump pipe that there are gaps, at this time can remove cushion pad, the cushion pad of damage is melted
Melt newly formed cushion pad of laying equal stress on, cushion pad is allow to reuse, do not generate waste material, achieves the advantageous effect for reducing cost.
Preferably, being arranged with the gasket between fixed block and nut on the tightening screw rod.
By using above-mentioned technical proposal, gasket replaces nut to contact fixed block, increases contact of the nut with fixed block
Area avoids nut oppression fixed block, fixed block is caused to deform, and achieves the advantageous effect for improving structural soundness.
In view of the deficienciess of the prior art, it is another object of the present invention to provide a kind of die type concrete pump pipes
The application method of fixing device has the effect of repeatable utilize.
To realize the above-mentioned technical purpose, the present invention provides following technical solutions：A kind of die type concrete pump pipe is fixed
The application method of device, including
S1. reserved opening is offered in template, and several fixed blocks are placed in template and will tighten screw rod from below
Across through-hole, closes up fixed block and make the axis of limiting slot and the centerline collineation of reserved opening；
S2., concrete pump pipe is closed up to the circular hole to be formed to be inserted into from limiting slot, fixed block is made to be close to the outer of concrete pump pipe
Side wall rotates draw ring, the lower surface of template is close in the end of nut tightening to the upper surface for being close to fixed block, crotch；
S3. concrete pump pipe is connected with concrete pump, concrete is made to be sent to template upper surface, concrete is smoothed out into shape
At floor, floor solidification is waited for；
S4. concrete reaches strength of mould stripping, inverts draw ring, nut is revolved a distance upwards, and rotate tightening screw rod, made
Crotch is located at immediately below the reserved opening of template, by form removable, crotch is gone back to original position again later, tightening nut makes crotch
The lower surface for resisting floor, into upper layer floor slab construction；
S5. the concrete floor slab construction of all floors finishes, and dismantling concrete pump line and fixing device is needed, since top layer
Successively down, loose nut successively, then draw ring is pulled up, fixed block is pulled out from the reserved opening of floor, is dismantled successively
Remaining fixed block completes fixing device and removes work.
In conclusion the present invention achieves following effect：
1. by the cooperation of fixed block and tightening screw rod, being detachably connected for fixing device and template, fixed dress are realized
The recoverable set；
2. by recyclable materials, the utilization again of damage component is realized；
3. by the cooperation of draw ring and nut, simple operation is improved.
Description of the drawings
Fig. 1 is in embodiment 1 for showing integrally-built partial sectional view；
Fig. 2 is the vertical view for showing two fixed block matching relationships in embodiment 1；
Fig. 3 is in embodiment 2 for showing integrally-built partial sectional view.
In figure, 1, fixed block；11, through-hole；12, screw rod is tightened；13, crotch；14, nut；15, limiting slot；16, draw ring；
17, gasket；18, bar is abutted；19, cushion pad；2, template；3, floor.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Embodiment 1：A kind of die type concrete pump pipe fixing device, as shown in Figure 1, include two rectangular fixed blocks 1,
Fixed block 1 uses rectangular in the present embodiment, but in actual production can also be the other shapes such as round, trapezoidal.Fixed block 1
Lower section be provided with the template 2 for pouring build floor 3, the sum of lower surface of two fixed blocks 1 is more than the hole to be provided in template 2
Mouthful.
As shown in Figure 1, being vertically arranged with through-hole 11 on fixed block 1, fixed block 1 is provided through the tightening screw rod of through-hole 11
12, one end that tightening screw rod 12 is located at 1 lower section of fixed block is provided with crotch 13, and the end of crotch 13, which is provided with, to be against under template 2
It is parallel with template 2 to abut bar 18 for the abutting bar 18 on surface.The spiral shell being threaded on tightening screw rod 12 above fixed block 1
Mother 14, vertical draw ring 16 is fixedly installed on nut 14, and the upper end of tightening screw rod 12 is located in draw ring 16.By rotating draw ring
16 drive nut 14 to be rotated relative to tightening screw rod 12, and the distance between nut 14 and crotch 13 gradually decrease, keep crotch 13 tight
It is attached to the lower surface of template 2, while the upper surface of fixed block 1 is close in the lower surface of nut 14, realizes template 2 and fixed block 1
Be relatively fixed.
As shown in Fig. 2, the centre of two fixed blocks 1 offer respectively for concrete pump pipe fitting across limiting slot 15,
Two limiting slots 15 form circular hole identical with concrete pump pipe outside diameter.After fixed block 1 and the holding of template 2 are relatively fixed, then
Between concrete pump pipe is inserted into two limiting slots 15, concrete pump pipe and fixed block 1 is made to keep being relatively fixed.
As shown in Figure 1, the contact surface of the reserved opening of fixed block 1 and floor 3 is set as slope, slope and vertical direction
Angle is 25 °.When concrete pump tube vibration, after fixed block 1 is by the extruding of concrete pump pipe, the slope surface between 0 ° -45 °
On, most of active force will be passed to concrete floor along slope surface vertical direction, and fraction upwardly extends (this component along line of slope
For extrusion force), therefore the extrusion force of floor feedback is small, reduces the load of nut 14 and crotch 13, fixing device is avoided to fall off.
As shown in Figure 1, the bending place of crotch 13 and the angle of horizontal direction are 45 °.Crotch 13 is close to 2 lower surface of template
When, when fixing device is squeezed, crotch 13 equally can be will produce becoming for deformation by active force, crotch 13 under active force
The angle of gesture, crotch 13 and horizontal direction is between 30-75 °, it is ensured that most of active force vertically transmits, and avoids
Crotch 13 deforms, and leads between crotch 13 and template 2 that there are gaps.
As shown in Figure 1, being arranged with the gasket 17 between fixed block 1 and nut 14 on tightening screw rod 12.17 generation of gasket
Fixed block 1 is contacted for nut 14, the contact area of nut 14 and fixed block 1 is increased, avoids 14 oppression fixed block of nut
1, cause fixed block 1 to deform fruit.
Fixed block 1 is made of reproducible material, and reproducible material includes rubber and plastics.Fixed block 1 for a long time by
It can deform after the extruding of floor 3 and concrete pump pipe, lead between fixed block 1 and concrete pump pipe that there are gaps, at this time
Fixed block 1 can be melted and be remake, so that fixed block 1 is continuing with, do not generate waste material.
The course of work：
S1. offer reserved opening in template 2, by several fixed blocks 1 be placed in template 2 and will tightening screw rod 12 from
Lower section passes through through-hole 11, closes up fixed block 1 and makes the axis of limiting slot 15 and the centerline collineation of reserved opening；
S2., concrete pump pipe is closed up to the circular hole to be formed to be inserted into from limiting slot 15, fixed block 1 is made to be close to concrete pump pipe
Lateral wall rotates draw ring 16, nut 14 is tightened onto to the upper surface for being close to fixed block 1, the end of crotch 13 is close under template 2
Surface；
S3. concrete pump pipe is connected with concrete pump, so that concrete is sent to 2 upper surface of template, concrete is smoothed out
Floor 3 is formed, floor 3 is waited for solidify；
S4. concrete reaches strength of mould stripping, inverts draw ring 16, nut 14 is revolved a distance upwards, and rotate tightening spiral shell
Bar 12 makes crotch 13 be located at immediately below the reserved opening of template 2, by form removable, crotch 13 is gone back to original position again later, is screwed
Nut 14 makes crotch 13 resist the lower surface of floor 3, into upper layer floor slab construction；
S5. the concrete floor slab construction of all floors finishes, and dismantling concrete pump line and fixing device is needed, since top layer
Successively down, loose nut 14 successively, then draw ring 16 is pulled up, fixed block 1 is pulled out from the reserved opening of floor 3, according to
The secondary remaining fixed block 1 of dismounting, completes fixing device and removes work.
Embodiment 2：Difference lies in the differences of fixed block 1 with embodiment 1 for the present embodiment.As shown in figure 3, in the present embodiment
Fixed block 1 be made of timber, the contact surface of the reserved opening of fixed block 1 and floor 3 is provided with cushion pad 19, limiting slot 15
Surface equally fitting is provided with cushion pad 19, and cushion pad 19 is made of reproducible material.Cushion pad 19 is for a long time by 3 He of floor
It can deform after the extruding of concrete pump pipe, lead between fixed block 1 and concrete pump pipe that there are gaps, it at this time can will
Cushion pad 19 is removed, and the cushion pad 19 of damage is melted newly formed cushion pad 19 of laying equal stress on, allows cushion pad 19 again by glue
Water is sticked to 1 surface of fixed block.
Claims (9)
1. a kind of die type concrete pump pipe fixing device, including：At least two fixed blocks (1), fixed block (1) setting exist
Template (2) for pouring build floor (3), the sum of lower surface of the fixed block (1) are more than the reserved opening in template (2),
It is vertically arranged with through-hole (11) on the fixed block (1)；
The fixed block (1) is provided through the tightening screw rod (12) of through-hole (11), and the tightening screw rod (12) is located at fixed block
(1) one end below is provided with crotch (13), and the end of the crotch (13) is located at the lower section of template (2), the tightening screw rod
(12) nut (14) being threaded on above fixed block (1)；
The centre of the fixed block (1) offer for concrete pump pipe fitting across limiting slot (15).
2. a kind of die type concrete pump pipe fixing device according to claim 1, it is characterised in that：The fixed block
(1) it is set as slope with the contact surface of the reserved opening of floor (3), the angle of slope and vertical direction is 0 ° -45 °.
3. a kind of die type concrete pump pipe fixing device according to claim 1, it is characterised in that：The crotch (13)
Bending place and the angle of horizontal direction be 30 ° -75 °.
4. a kind of die type concrete pump pipe fixing device according to claim 3, it is characterised in that：The crotch (13)
End be provided with the abutting bar (18) parallel with template (2).
5. a kind of die type concrete pump pipe fixing device according to claim 1, it is characterised in that：The nut (14)
On be fixedly installed vertical draw ring (16), it is interior that the upper end of the tightening screw rod (12) is located at draw ring (16).
6. a kind of die type concrete pump pipe fixing device according to claim 1, it is characterised in that：The fixed block
(1) it is made of reproducible material, the reproducible material includes rubber and plastics.
7. a kind of die type concrete pump pipe fixing device according to claim 1, it is characterised in that：The fixed block
(1) it is made of timber, the contact surface of the reserved opening of the fixed block (1) and floor (3) is provided with cushion pad (19), the limit
The equally fitting of the surface of position slot (15) is provided with cushion pad (19), and the cushion pad (19) is made of reproducible material.
8. a kind of die type concrete pump pipe fixing device according to claim 1, it is characterised in that：The tightening screw rod
(12) gasket (17) being arranged between fixed block (1) and nut (14).
9. a kind of user for the die type concrete pump pipe fixing device described in any one of the claims 1-8
Method, it is characterised in that：Including
S1. reserved opening is offered in template (2), several fixed blocks (1) are placed in template (2) and screw rod will be tightened
(12) through-hole (11) is passed from below through, fixed block (1) is closed up and the axis of limiting slot (15) and the center line of reserved opening is made to be total to
Line；
S2., concrete pump pipe is closed up to the circular hole to be formed to be inserted into from limiting slot (15), fixed block (1) is made to be close to concrete pump pipe
Nut (14), is tightened onto the upper surface for being close to fixed block (1), the end of crotch (13) is close to by lateral wall, rotation draw ring (16)
The lower surface of template (2)；
S3. concrete pump pipe is connected with concrete pump, so that concrete is sent to template (2) upper surface, concrete is smoothed out into shape
At floor (3), floor (3) is waited for solidify；
S4. concrete reaches strength of mould stripping, and nut (14) is revolved a distance, and rotate tightening spiral shell by reversion draw ring (16) upwards
Bar (12) makes crotch (13) be located at immediately below the reserved opening of template (2), form removable later again goes back to crotch (13)
In situ, tightening nut (14) makes crotch (13) resist the lower surface of floor (3), into upper layer floor slab construction；
S5. the concrete floor slab construction of all floors finishes, and needs dismantling concrete pump line and fixing device, since top layer successively
Down, loose nut (14) successively, then draw ring (16) is pulled up, fixed block (1) is drawn from the reserved opening of floor (3)
Go out, dismantle remaining fixed block (1) successively, completes fixing device and remove work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810431203.4A CN108612311A (en) | 2018-05-08 | 2018-05-08 | A kind of die type concrete pump pipe fixing device and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810431203.4A CN108612311A (en) | 2018-05-08 | 2018-05-08 | A kind of die type concrete pump pipe fixing device and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108612311A true CN108612311A (en) | 2018-10-02 |
Family
ID=63662243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810431203.4A Pending CN108612311A (en) | 2018-05-08 | 2018-05-08 | A kind of die type concrete pump pipe fixing device and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108612311A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863653A (en) * | 2019-11-29 | 2020-03-06 | 河南科建建设工程有限公司 | Device and method for fixing vertical section of concrete conveying pipe |
| CN113494185A (en) * | 2021-08-05 | 2021-10-12 | 广州工程总承包集团有限公司 | Assembled strenghthened type wearing plate-free concrete conveying pump line fixing device |
| CN113846842A (en) * | 2021-08-05 | 2021-12-28 | 广州工程总承包集团有限公司 | Application method of concrete conveying pump pipe fixing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11270137A (en) * | 1998-03-26 | 1999-10-05 | Taisei Corp | Concrete transport pipe branching unit |
| CN202672735U (en) * | 2012-05-22 | 2013-01-16 | 深圳市建工集团股份有限公司 | Construction site pump pipe-reinforcing auxiliary tool |
| CN106836799A (en) * | 2017-04-06 | 2017-06-13 | 成都市第三建筑工程公司 | Reserved sleeve pipe and formwork for placing can be had enough to meet the need |
-
2018
- 2018-05-08 CN CN201810431203.4A patent/CN108612311A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11270137A (en) * | 1998-03-26 | 1999-10-05 | Taisei Corp | Concrete transport pipe branching unit |
| CN202672735U (en) * | 2012-05-22 | 2013-01-16 | 深圳市建工集团股份有限公司 | Construction site pump pipe-reinforcing auxiliary tool |
| CN106836799A (en) * | 2017-04-06 | 2017-06-13 | 成都市第三建筑工程公司 | Reserved sleeve pipe and formwork for placing can be had enough to meet the need |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863653A (en) * | 2019-11-29 | 2020-03-06 | 河南科建建设工程有限公司 | Device and method for fixing vertical section of concrete conveying pipe |
| CN113494185A (en) * | 2021-08-05 | 2021-10-12 | 广州工程总承包集团有限公司 | Assembled strenghthened type wearing plate-free concrete conveying pump line fixing device |
| CN113846842A (en) * | 2021-08-05 | 2021-12-28 | 广州工程总承包集团有限公司 | Application method of concrete conveying pump pipe fixing device |
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Application publication date: 20181002 |
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