CN109514456A - It is a kind of large size drainpipe carrying use clamp device - Google Patents
It is a kind of large size drainpipe carrying use clamp device Download PDFInfo
- Publication number
- CN109514456A CN109514456A CN201811542093.5A CN201811542093A CN109514456A CN 109514456 A CN109514456 A CN 109514456A CN 201811542093 A CN201811542093 A CN 201811542093A CN 109514456 A CN109514456 A CN 109514456A
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- fixed beam
- drainpipe
- lower fixed
- slot
- sliding slot
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sink And Installation For Waste Water (AREA)
- Loading Or Unloading Of Vehicles (AREA)
Abstract
The invention discloses a kind of large-scale drainpipe carrying clamp devices, including bottom fixed mechanism and intermediate fixed mechanism, bottom fixed mechanism is by lower fixed beam, sliding slot and limiting slot are constituted, the inside of lower fixed beam is equipped with sliding slot, it is in horizontally disposed sliding slot that the side of lower fixed beam, which is equipped with, the top of lower fixed beam is equipped with equally distributed narrow locating part, the inside of sliding slot is arranged in the bottom end insertion of narrow locating part, and it is flexibly connected with sliding slot, the inside of limiting slot is equipped with fastening bolt, one end of fastening bolt and narrow locating part weld, the side of lower fixed beam is equipped with hook, hook is in the side wall for being horizontally set on lower fixed beam, and it is welded with lower fixed beam, the side of lower fixed beam is equipped with fixing seat, fixing seat is in the side wall for being horizontally set on lower fixed beam, and it fits closely and fixes with lower fixed beam, with the draining that can adapt to various outer diameter The advantages that pipe, clamping stability is strong, and cargo handling process is simple.
Description
Technical field
The present invention relates to fastening device technical fields, are especially a kind of large-scale drainpipe carrying clamp device.
Background technique
Drainpipe mainly undertakes the task of the drainings such as rainwater, sewage, farmland discharging-irrigating, and drainpipe is divided into plastic drain-pipe, mixes
Solidifying soil pipe and concrete reinforced pipe, drainpipe generally use engineering truck to carry, and since drainpipe is easy sliding, need in transportational process
It is fixed using clamp device.
The utility model of Patent No. CN201605735U discloses " fixing clamp for drain pipe ", the fixing clamp for drain pipe by
Several section fixing clamp ontology compositions, the fixing clamp ontology include first connector for being arranged on end and are set to institute
The second connector of fixing clamp ontology lower end is stated, first connector and the second adjacent connector cooperate described in connection
Adjacent fixing clamp ontology.
However, the analysis found that, existing large size drainpipe carrying is had the following disadvantages with clamp device；First, nothing
Method adapts to the drainpipe of various outer diameter, second, clamping stability is insufficient；Third, handling are cumbersome.
Summary of the invention
Therefore, in order to solve above-mentioned deficiency, the present invention provides a kind of large-scale drainpipe carrying clamp device herein, has
It can adapt to the drainpipe of various outer diameter, the advantages that clamping stability is strong, and cargo handling process is simple.
The invention is realized in this way constructing a kind of large-scale drainpipe carrying clamp device, including bottom fixed mechanism
With intermediate fixed mechanism, the bottom fixed mechanism is made of lower fixed beam, sliding slot and limiting slot, the inside of the lower fixed beam
Equipped with sliding slot, it is in horizontally disposed sliding slot that the side of the lower fixed beam, which is equipped with, and the top of the lower fixed beam, which is equipped with, uniformly to be divided
The inside of sliding slot is arranged in the bottom end insertion of the narrow locating part of cloth, the narrow locating part, and is flexibly connected with sliding slot, the limit
The inside of slot is equipped with fastening bolt, and one end of the fastening bolt and narrow locating part weld, and the side of the lower fixed beam is equipped with
Hook, the hook are welded in the side wall for being horizontally set on lower fixed beam, and with lower fixed beam, and the side of the lower fixed beam is set
There is fixing seat, the fixing seat is in the side wall for being horizontally set on lower fixed beam, and fits closely and fix with lower fixed beam, described
Intermediate fixed mechanism is made of upper fixed beam, upper limit part, lower limit part, upper fastening bolt and lower fastening bolt, described solid
The inside for determining beam is equipped with upper hopper chute and gliding groove, and the side of fixed beam is equipped with upper limit position groove and lower limit slot, it is described on
The inside of upper hopper chute is arranged in the bottom end insertion of locating part, and is flexibly connected with upper hopper chute, the upper fastening bolt insertion setting
In the inside of upper limit position groove, and one end of the upper fastening bolt and upper limit part weld, the top insertion of the lower limit part
The inside of gliding groove is set, and is flexibly connected with gliding groove, the inside of lower limit slot is arranged in the lower fastening bolt insertion,
And be flexibly connected with lower limit slot, it is in horizontally disposed buckle that the side of fixed beam, which is equipped with two pieces, the buckle with it is upper
Fixed beam welding, is equipped with column between the bottom fixed mechanism and intermediate fixed mechanism, the bottom end of the column is embedded in setting
Agree in the inside of fixing seat, and with fixing seat, the inside that buckle is arranged in is run through on the top of the column, and movable with buckle
Connection, the opposite side of the narrow locating part are equipped with another group of bottom fixed mechanism and wide locating part, and the bottom end of the width locating part is embedding
Enter the inside of sliding slot is arranged in, and be flexibly connected with sliding slot, the bottom of the lower fixed beam is equipped with bottom plate, the bottom plate with it is lower solid
Determine beam welding, the side of the bottom plate is equipped with transverse slat, and one end of the transverse slat and bottom plate weld, the lower fixation of the other end and opposite side
Beam is fixed by screws.
Further, the intermediate fixed mechanism is in the top for being horizontally set on bottom fixed mechanism, and solid among four groups
Determine arranged in parallel between mechanism and bottom fixed mechanism, drainpipe carried by the bottom fixed mechanism of setting,
Drainpipe is avoided to slide, and intermediate fixed mechanism then can be used in being superimposed drainpipe, increases drainpipe freight volume and guarantees it
Stability.
Further, the upper hopper chute and gliding groove are arranged in parallel, and the upper limit position groove and lower limit slot are mutually flat
Row setting, the upper hopper chute are connected to upper limit position groove, and the gliding groove is connected to lower limit slot, and upper fastening bolt can penetrate upper
Limiting slot is connect with the upper limit part in upper hopper chute, and lower fastening bolt can be through the lower limit part in lower limit slot and gliding groove
Connection.
Further, the side of the buckle is equipped with tightening knob, and one end of the tightening knob is being buckled through setting
Side wall, and is flexibly connected, the column in buckle can be fixed by the tightening knob of setting, operation is simple with buckle
It is single.
Further, the wide locating part is consistent with the shape of narrow locating part, and width is inconsistent, and wide locating part is located at draining
Pipe front end can expand the contact surface of itself and drainpipe, increasing friction force.
The present invention provides a kind of large-scale drainpipe carrying clamp device by improving herein, removes with existing large-scale drainpipe
It is compared with clamp device, has the advantages that clamping stability is strong with the drainpipe that can adapt to various outer diameter, handling
The advantages that process is simple embodies are as follows:
Advantage 1: the intermediate fixed mechanism is in the top for being horizontally set on bottom fixed mechanism, and fixed machine among four groups
It is arranged in parallel between structure and bottom fixed mechanism, drainpipe is carried by the bottom fixed mechanism of setting, is avoided
Drainpipe sliding, and intermediate fixed mechanism then can be used in being superimposed drainpipe, increases drainpipe freight volume and guarantees its stabilization
Property.
Advantage 2: the upper hopper chute and gliding groove are arranged in parallel, and the upper limit position groove and lower limit slot are parallel to each other and set
It sets, the upper hopper chute is connected to upper limit position groove, and the gliding groove is connected to lower limit slot, and upper fastening bolt can penetrate upper limit
Slot is connect with the upper limit part in upper hopper chute, and lower fastening bolt can connect through the lower limit part in lower limit slot and gliding groove
It connects.
Advantage 3: the side of the buckle is equipped with tightening knob, and the side that buckle is arranged in is run through in one end of the tightening knob
Wall, and be flexibly connected with buckle, the column in buckle can be fixed by the tightening knob of setting, easy to operate, institute
It is consistent with the shape of narrow locating part to state wide locating part, width is inconsistent, and wide locating part is located at drainpipe front end, can expand its with
The contact surface of drainpipe, increasing friction force.
Detailed description of the invention
Fig. 1 is a kind of large-scale drainpipe carrying clamp device structural schematic diagram of the present invention；
Fig. 2 is a kind of intermediate fixed mechanism partial structural diagram of large-scale drainpipe carrying clamp device of the present invention；
Fig. 3 is a kind of bottom fixed mechanism partial enlarged view of large-scale drainpipe carrying clamp device of the present invention.
Serial number as shown in the figure: bottom fixed mechanism 1, lower fixed beam 101, sliding slot 102, limiting slot 103, fastening bolt 104,
Intermediate fixed mechanism 2, upper fixed beam 201, upper hopper chute 202, gliding groove 203, upper limit position groove 204, lower limit slot 205, lower limit
Part 206, lower fastening bolt 207, upper fastening bolt 208, upper limit part 209, fixing seat 3, column 4, buckle 5, tightening knob 6,
Transverse slat 7, bottom plate 8, wide locating part 9, narrow locating part 10 and hook 11.
Specific embodiment
Below in conjunction with attached drawing 1- Fig. 3, the present invention is described in detail, technical solution in the embodiment of the present invention into
Row clearly and completely describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, shall fall within the protection scope of the present invention；In addition, term " first ", " second ", " third " are " above and below,
It is left and right " etc. be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.Meanwhile in description of the invention
In unless specifically defined or limited otherwise, term " connected ", " connection " shall be understood in a broad sense, for example, it may be fixed connect
It connects, may be a detachable connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly
It is connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art, can be understood with concrete condition
The concrete meaning of above-mentioned term in the present invention.
The present invention provides a kind of large-scale drainpipe carrying clamp device by improving herein, as shown in Figure 1-Figure 3, can be with
It is practiced as follows；Including bottom fixed mechanism 1 and intermediate fixed mechanism 2, bottom fixed mechanism 1 is by lower fixed beam
101, sliding slot 102 and limiting slot 103 are constituted, and the inside of lower fixed beam 101 is equipped with sliding slot 102, and the side of lower fixed beam 101 is equipped with
In horizontally disposed sliding slot 102, the top of lower fixed beam 101 is equipped with equally distributed narrow locating part 10, the bottom of narrow locating part 10
The inside of sliding slot 102 is arranged in end insertion, and is flexibly connected with sliding slot 102, and the inside of limiting slot 103 is equipped with fastening bolt 104,
One end of fastening bolt 104 and narrow locating part 10 weld, and the side of lower fixed beam 101 is equipped with hook 11, and hook 11 is set in level
The side wall in lower fixed beam 101 is set, and is welded with lower fixed beam 101, the side of lower fixed beam 101 is equipped with fixing seat 3, fixing seat
3 in being horizontally set on the side wall of lower fixed beam 101, and fits closely and fix with lower fixed beam 101, intermediate fixed mechanism 2 by
Upper fixed beam 201, upper limit part 209, lower limit part 206, upper fastening bolt 208 and lower fastening bolt 207 are constituted, upper fixed beam
201 inside is equipped with upper hopper chute 202 and gliding groove 203, and the side of upper fixed beam 201 is equipped with upper limit position groove 204 and lower limit slot
205, the inside of upper hopper chute 202 is arranged in the bottom end insertion of upper limit part 209, and is flexibly connected with upper hopper chute 202, upper fastening spiral shell
Bolt 208 is embedded in the inside that upper limit position groove 204 is arranged in, and one end of upper fastening bolt 208 and upper limit part 209 weld, lower limit
The inside of gliding groove 203 is arranged in the top insertion of position part 206, and is flexibly connected with gliding groove 203, and lower fastening bolt 207 is embedding
Enter to be arranged in the inside of lower limit slot 205, and be flexibly connected with lower limit slot 205, the side of upper fixed beam 201 is equipped with two pieces and is in
Horizontally disposed buckle 5, buckle 5 are welded with upper fixed beam 201, are equipped between bottom fixed mechanism 1 and intermediate fixed mechanism 2 vertical
The inside of fixing seat 3 is arranged in the bottom end insertion of column 4, column 4, and agrees with fixing seat 3, and the top of column 4 exists through setting
The inside of buckle 5, and be flexibly connected with buckle 5, the opposite side of narrow locating part 10 is equipped with another group of bottom fixed mechanism 1 and tolerance position
The inside of sliding slot 102 is arranged in the bottom end insertion of part 9, wide locating part 9, and is flexibly connected with sliding slot 102, lower fixed beam 101
Bottom is equipped with bottom plate 8, and bottom plate 8 and lower fixed beam 101 are welded, and the side of bottom plate 8 is equipped with transverse slat 7, one end of transverse slat 7 and bottom plate 8
The lower fixed beam 101 of welding, the other end and opposite side is fixed by screws.
The intermediate fixed mechanism 2 is in be horizontally set on the top of bottom fixed mechanism 1, and fixed mechanisms 2 among four groups
It is arranged in parallel between bottom fixed mechanism 1, drainpipe is carried by the bottom fixed mechanism 1 of setting, is avoided
Drainpipe sliding, and intermediate fixed mechanism 2 then can be used in being superimposed drainpipe, increases drainpipe freight volume and guarantees its stabilization
Property.
The upper hopper chute 202 and gliding groove 203 are arranged in parallel, and the upper limit position groove 204 and lower limit slot 205 are mutual
It is arranged in parallel, the upper hopper chute 202 is connected to upper limit position groove 204, and the gliding groove 203 is connected to lower limit slot 205, upper fastening
Bolt 208 can be connect through upper limit position groove 204 with the upper limit part 209 in upper hopper chute 202, and lower fastening bolt 207 can be saturating
Lower limit slot 205 is crossed to connect with the lower limit part 206 in gliding groove 203.
The side of the buckle 5 is equipped with tightening knob 6, and the side that buckle 5 is arranged in is run through in one end of the tightening knob 6
Wall, and be flexibly connected with buckle 5, the column 4 in buckle 5 can be fixed by the tightening knob 6 of setting, operation letter
Single, the wide locating part 9 is consistent with the shape of narrow locating part 10, and width is inconsistent, and wide locating part 9 is located at drainpipe front end, energy
Enough expand the contact surface of itself and drainpipe, increasing friction force.
This kind large size drainpipe carries the working principle for using clamp device: firstly, staff will be with the bottom for linking up with 11
Portion's fixed mechanism 1 is placed on the tail portion of transport vehicle carriage, and two hooks 11 are stuck in compartment edge, will have the bottom of bottom plate 8
Fixed mechanism 1 is placed on compartment middle position, and drainpipe is then placed on 101 top of lower fixed beam, by narrow locating part 10 from
Two sides are embedded into the inside of sliding slot 102, constantly toward propulsion at drainpipe, when two narrow locating part 10 is adjacent to draining pipe outer wall,
Fastening bolt 104 is tightened, drainpipe one end is fixed using two narrow locating part 10, using aforesaid way by two
Wide locating part 9 clamps the other end of drainpipe, and fixed by fastening bolt 104, then puts intermediate fixed mechanism 2 in level
It sets at the top of drainpipe, and intermediate fixed mechanism 2 is connect with bottom fixed mechanism 1 by column 4, using lower limit part
206 pairs of drainpipe tops are clamped, and fixed by lower fastening bolt 207, can be put at this time in upper 201 superimposed on top of fixed beam
Drainpipe is set, is fixed in the manner described above.
In summary；Large size drainpipe of the present invention, which is carried, uses clamp device, carries with existing large-scale drainpipe with tight
It is fixedly mounted with to set and compare, with the advantages that drainpipe that can adapt to various outer diameter, clamping stability is strong, and cargo handling process is simple.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (5)
1. a kind of large size drainpipe, which is carried, uses clamp device, including bottom fixed mechanism (1) and intermediate fixed mechanism (2), special
Sign is: the bottom fixed mechanism (1) is made of lower fixed beam (101), sliding slot (102) and limiting slot (103), described lower solid
The inside for determining beam (101) is equipped with sliding slot (102), and it is in horizontally disposed sliding slot that the side of the lower fixed beam (101), which is equipped with,
(102), the top of the lower fixed beam (101) is equipped with equally distributed narrow locating part (10), the bottom of the narrow locating part (10)
End insertion setting is flexibly connected in the inside of sliding slot (102), and with sliding slot (102), and the inside of the limiting slot (103) is equipped with tight
Fixing bolt (104), one end and narrow locating part (10) of the fastening bolt (104) are welded, the side of the lower fixed beam (101)
Equipped with hook (11), the hook (11) is in the side wall for being horizontally set on lower fixed beam (101), and is welded with lower fixed beam (101)
It connects, the side of the lower fixed beam (101) is equipped with fixing seat (3), and the fixing seat (3) is in be horizontally set on lower fixed beam
(101) side wall, and fit closely and fix with lower fixed beam (101), the intermediate fixed mechanism (2) is by upper fixed beam
(201), upper limit part (209), lower limit part (206), upper fastening bolt (208) and lower fastening bolt (207) are constituted, it is described on
The inside of fixed beam (201) is equipped with upper hopper chute (202) and gliding groove (203), and the side of fixed beam (201) is equipped with the upper limit
The bottom end insertion of position slot (204) and lower limit slot (205), the upper limit part (209) is arranged in the inside of upper hopper chute (202),
And be flexibly connected with upper hopper chute (202), upper fastening bolt (208) insertion is arranged in the inside of upper limit position groove (204), and institute
The one end and upper limit part (209) for stating upper fastening bolt (208) are welded, and the top insertion setting of the lower limit part (206) exists
The inside of gliding groove (203), and be flexibly connected with gliding groove (203), lower fastening bolt (207) insertion is arranged in lower limit
The inside of slot (205), and be flexibly connected with lower limit slot (205), the side of fixed beam (201) is equipped with two pieces in level
The buckle (5) of setting, the buckle (5) and upper fixed beam (201) are welded, the bottom fixed mechanism (1) and intermediate fixed machine
Between structure (2) be equipped with column (4), the column (4) bottom end insertion be arranged in the inside of fixing seat (3), and with fixing seat (3)
Agree with, the top of the column (4) is flexibly connected through setting in the inside of buckle (5), and with buckle (5), the narrow limit
The opposite side of part (10) is equipped with another group of bottom fixed mechanism (1) and wide locating part (9), the bottom end insertion of the width locating part (9)
Inside in sliding slot (102) is set, and is flexibly connected with sliding slot (102), the bottom of the lower fixed beam (101) is equipped with bottom plate
(8), the bottom plate (8) and lower fixed beam (101) are welded, and the side of the bottom plate (8) is equipped with transverse slat (7), the transverse slat (7)
One end and bottom plate (8) are welded, and the lower fixed beam (101) of the other end and opposite side is fixed by screws.
2. a kind of large-scale drainpipe, which is carried, according to claim 1 uses clamp device, it is characterised in that: the intermediate fixed machine
Structure (2) is in be horizontally set on the top of bottom fixed mechanism (1), and fixed mechanisms (2) and bottom fixed mechanism (1) among four groups
Between it is arranged in parallel.
3. a kind of large-scale drainpipe, which is carried, according to claim 1 uses clamp device, it is characterised in that: the upper hopper chute
(202) and gliding groove (203) is arranged in parallel, and the upper limit position groove (204) and lower limit slot (205) are arranged in parallel,
The upper hopper chute (202) is connected to upper limit position groove (204), and the gliding groove (203) is connected to lower limit slot (205).
4. a kind of large-scale drainpipe, which is carried, according to claim 1 uses clamp device, it is characterised in that: the buckle (5)
Side is equipped with tightening knob (6), the side wall of one end of the tightening knob (6) through setting in buckle (5), and with buckle (5)
It is flexibly connected.
5. a kind of large-scale drainpipe, which is carried, according to claim 1 uses clamp device, it is characterised in that: the width locating part
(9) consistent with the shape of narrow locating part (10), width is inconsistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542093.5A CN109514456B (en) | 2018-12-17 | 2018-12-17 | Fastening device for carrying large-scale drain pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542093.5A CN109514456B (en) | 2018-12-17 | 2018-12-17 | Fastening device for carrying large-scale drain pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109514456A true CN109514456A (en) | 2019-03-26 |
| CN109514456B CN109514456B (en) | 2020-11-03 |
Family
ID=65795709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811542093.5A Active CN109514456B (en) | 2018-12-17 | 2018-12-17 | Fastening device for carrying large-scale drain pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109514456B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000120434A (en) * | 1998-10-16 | 2000-04-25 | Kanto Auto Works Ltd | Automobile exhaust pipe connection jig |
| CN203585551U (en) * | 2013-12-05 | 2014-05-07 | 李琨 | Fixed mounting device for double-layer petroleum pipeline |
| CN205703338U (en) * | 2016-04-12 | 2016-11-23 | 马明娥 | A kind of stable large pipe cutting clamper |
| CN107150145A (en) * | 2017-05-19 | 2017-09-12 | 金柯楠 | A kind of hospital care sick bed infusion frame steel pipe processing unit (plant) |
| CN207188934U (en) * | 2017-08-30 | 2018-04-06 | 温州洪南机械制造有限公司 | A kind of pipe joint tapping clamp |
| CN207853367U (en) * | 2018-01-20 | 2018-09-11 | 青岛新鲁同钢构有限公司 | Tunnel square cable frame |
| CN208196237U (en) * | 2018-05-03 | 2018-12-07 | 秭归县开明建筑有限责任公司 | A kind of stability protector for building pipe drilling |
-
2018
- 2018-12-17 CN CN201811542093.5A patent/CN109514456B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000120434A (en) * | 1998-10-16 | 2000-04-25 | Kanto Auto Works Ltd | Automobile exhaust pipe connection jig |
| CN203585551U (en) * | 2013-12-05 | 2014-05-07 | 李琨 | Fixed mounting device for double-layer petroleum pipeline |
| CN205703338U (en) * | 2016-04-12 | 2016-11-23 | 马明娥 | A kind of stable large pipe cutting clamper |
| CN107150145A (en) * | 2017-05-19 | 2017-09-12 | 金柯楠 | A kind of hospital care sick bed infusion frame steel pipe processing unit (plant) |
| CN207188934U (en) * | 2017-08-30 | 2018-04-06 | 温州洪南机械制造有限公司 | A kind of pipe joint tapping clamp |
| CN207853367U (en) * | 2018-01-20 | 2018-09-11 | 青岛新鲁同钢构有限公司 | Tunnel square cable frame |
| CN208196237U (en) * | 2018-05-03 | 2018-12-07 | 秭归县开明建筑有限责任公司 | A kind of stability protector for building pipe drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109514456B (en) | 2020-11-03 |
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