CN113524087A - Auxiliary device for installing cooling water jacket - Google Patents
Auxiliary device for installing cooling water jacket Download PDFInfo
- Publication number
- CN113524087A CN113524087A CN202110892167.3A CN202110892167A CN113524087A CN 113524087 A CN113524087 A CN 113524087A CN 202110892167 A CN202110892167 A CN 202110892167A CN 113524087 A CN113524087 A CN 113524087A
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- cooling water
- water jacket
- support
- bearing seat
- rack
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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
- B25B11/02—Assembly jigs
-
- 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
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- Mechanical Engineering (AREA)
Abstract
The invention discloses a cooling water jacket installation auxiliary device, which comprises a bracket, wherein the bracket is provided with: a lifting part for connecting a lifting hook; the balancing weight is positioned on one side of the bracket; and the support is positioned on the other side of the support, a bearing seat is arranged on the support and used for supporting the cooling water jacket, and two clamping plates are movably arranged on the support and positioned on two sides of the bearing seat respectively. According to the auxiliary device for installing the cooling water jacket, when the bearing seat is descended by the cooling water jacket and is linked with the two clamping plates to move in opposite directions through the transmission mechanism, the clamping plates are clamped on the outer wall of the cooling water jacket along with the end of the downward sliding stroke of the bearing seat, so that the cooling water jacket is fixed on the support, when the support is moved, the cooling water jacket cannot be displaced on the support due to the shaking of the support, the butt joint efficiency is improved, the cooling water jacket is convenient to fix and operate by the weight of the cooling water jacket, the support is descended during disassembly so that the bearing seat is not stressed by the acting force of the cooling water jacket, and the clamping plates do not clamp the cooling water jacket, so that the disassembly is convenient.
Description
Technical Field
The invention relates to the technical field of cooling water jackets, in particular to an auxiliary device for mounting a cooling water jacket.
Background
The pipe forming process needs cooling through a cooling device, the cooling water jacket in the cooling device is large in size and heavy in weight, the center of gravity of the cooling water jacket is special in structure and is not at the center, when the cooling water jacket on a solid-wall pipe is replaced daily, the cooling water jacket needs to be directly hung in the air through a crane, and the cooling water jacket and the cooling device are installed in a butt joint mode through manual adjustment and alignment until the central axes of the cooling water jacket and the cylinder of the cooling device are collinear.
The invention with publication number CN208745320U, named as vacuum shaping box for pipes, and publication number 20190416, comprises a shaping box body; the cooling water jacket is sleeved in the shaping box body; the tubular product vacuum design case still include: the cooling water jacket quick-change device comprises a base plate detachably mounted on the shaping box body, a supporting plate fixedly arranged on the base plate, a sliding shaft fixedly arranged on the supporting plate, and a sliding sleeve fixedly arranged on the outer wall surface of the shaping box body and in sliding fit with the sliding shaft, wherein the cooling water jacket is detachably mounted on the base plate.
The defects of the prior art including the above patent are that the bracket directly penetrates through the cooling water jacket and the cooling water jacket is suspended and hoisted along with the crane, so that when the crane moves the bracket, the cooling water jacket can be displaced on the bracket due to small-amplitude swing of the bracket, a worker is inconvenient to butt with a cooling device, and the die change efficiency is reduced.
Disclosure of Invention
In view of the above problems of the prior art, an object of the present invention is to provide a cooling water jacket installation assisting device to solve the above disadvantages of the prior art.
In order to achieve the above object, the present invention provides a cooling water jacket installation auxiliary device, including a bracket, on which: a lifting part for connecting a lifting hook; the balancing weight is positioned on one side of the bracket; the support is positioned on the other side of the support, a bearing seat is arranged on the support and used for supporting the cooling water jacket, and two clamping plates are movably arranged on the support and positioned on two sides of the bearing seat respectively; the transmission mechanism comprises a connecting rod, a first rack, a gear and a second rack which are sequentially connected, one end of the connecting rod is hinged with the first rack, the other end of the connecting rod is hinged with the bearing seat, and the gear is meshed with the second rack; when the bearing seat is pressed downwards, the bearing seat enables the first rack to slide through the connecting rod, the first gear drives the second rack to slide through the gear, and therefore the two clamping plates slide to clamp the cooling water jacket.
Preferably, the support further comprises an extension seat arranged on the support, wherein a balancing weight is arranged on the extension seat and used for enabling the support to be in a horizontal state.
Preferably, a plurality of first rollers are arranged in the extension seat relatively, sliding blocks are arranged between the first rollers, and the sliding blocks are connected with the balancing weight through bottom steel bars.
Preferably, threaded connection has a threaded rod on the extension seat, and the one end of threaded rod with the sliding block is rotated and is connected.
Preferably, the sliding direction of the bearing seat is perpendicular to the axial direction of the support.
Preferably, a plurality of second rollers are arranged on the bearing seat, and the second rollers are abutted with the inner wall of the cooling water jacket.
Preferably, the lifting part is a transverse plate, the transverse plate and the extension seat are axially arranged in parallel, and a hook is arranged on the transverse plate.
Preferably, the transverse plate is provided with a rectangular groove, and a level bar is embedded in the rectangular groove.
Preferably, the first rack is slidably disposed in the support, one end of the second rack is slidably disposed on the support, and the other end of the second rack is fixedly disposed on the outer wall of the clamping plate.
Preferably, the gear is rotatably arranged on the outer wall of the support, the clamping plate is provided with a second rack, and the gear is respectively meshed with the first rack and the second rack.
In the above technical solution, the auxiliary device for installing a cooling water jacket provided by the present invention has the following beneficial effects:
1. according to the invention, when the cooling water jacket is pressed on the bearing seat on the support, the bearing seat slides downwards under acting force and is linked with the clamping plates on the outer walls of the two sides of the cooling water jacket through the transmission mechanism, so that the two clamping plates move oppositely, and along with the end of the sliding stroke of the bearing seat, the two clamping plates are clamped on the outer wall of the cooling water jacket, so that the cooling water jacket is fixed on the support, and when the crane moves the support, the cooling water jacket cannot be displaced on the support due to small-amplitude shaking of the support, so that the butt joint of workers is facilitated, and the butt joint efficiency is improved.
2. According to the invention, the bearing seat is pressed by the self weight of the cooling water jacket to drive the bearing seat to be meshed with the transmission clamping plate to fix the cooling water jacket, the fixing operation is convenient by using the weight of the cooling water jacket, and the support is descended after butt joint to ensure that the bearing seat is not acted by the cooling water jacket any more, namely the clamping plate does not clamp the outer wall of the cooling water jacket any more, so that the cooling water jacket is convenient to disassemble.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the present invention before its whole implementation;
FIG. 3 is a schematic sectional view of the inside of the support according to the present invention;
FIG. 4 is a partial schematic view of an extension base according to the present invention;
FIG. 5 is a schematic cross-sectional view of the interior of the extension base according to the present invention;
FIG. 6 is a schematic view of another embodiment of the present invention.
Description of reference numerals:
1. a support; 2. a cooling water jacket; 3. a balancing weight; 4. a support; 5. a level bar; 6. an extension base; 7. a splint; 8. a load bearing seat; 9. a first rack; 10. a gear; 11. a slider; 101. a transverse plate; 301. reinforcing steel bars; 601. a threaded rod; 602. a first roller; 603. a guide groove; 701. a second rack; 801. a second roller; 802. a groove; 901. a connecting rod.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 6, the auxiliary device for installing the cooling water jacket is used to solve the problem that when the support is moved by the crane, the cooling water jacket is displaced on the support due to the small amplitude swing of the support when the support is moved by the crane because the support directly passes through the cooling water jacket and hangs the cooling water jacket in the air along with the crane, which is inconvenient for the operator to butt against the solid-wall pipe and reduces the mold changing efficiency.
The technical scheme further provided by the invention comprises a bracket 1, wherein the bracket 1 is provided with: a lifting part for connecting a lifting hook; the balancing weight 3 is positioned on one side of the bracket 1; the support 4 is positioned on the other side of the bracket 1, a bearing seat 8 is arranged on the support 4 and used for supporting the cooling water jacket 2, and two clamping plates 7 are movably arranged on the support 4 and positioned on two sides of the bearing seat 8 respectively; the transmission mechanism comprises a connecting rod 901, a first rack 9, a gear 10 and a second rack 701 which are sequentially connected, one end of the connecting rod 901 is hinged with the first rack 9, the other end of the connecting rod is hinged with the bearing seat 8, and the gear 10 is meshed with the second rack 701; when the bearing seat 8 is pressed downwards, the bearing seat 8 enables the first rack 9 to slide through the connecting rod 901, the first gear 9 drives the second rack 701 to slide through the gear 10 so that the two clamping plates 7 slide to clamp the cooling water jacket 2, specifically, the hoisting part is positioned at the central point of the integrated device, the support 4 is arranged on the long arm end of the support 1 close to the end head and forms an opposite surface with the counterweight 3, after the cooling water jacket 2 is placed on the support 4, the integrated device is close to a horizontal state through the weight of the counterweight 3, before the cooling water jacket 2 is hoisted, the counterweight 3 on the support 1 is positioned at the position closest to the long arm end of the support 1 (as shown in a state in a figure 6), the gravity center of the whole support 1 is positioned at the counterweight 3 at the position, so that the gravity center of the integrated device is inclined towards one side of the counterweight 3, the inclined angle is 20-30 degrees with the ground, when the long arm end of the bracket 1 passes through the cooling water jacket 2 in the range of the inclination angle, the long arm end of the bracket 1 cannot collide with the inner wall of the cooling water jacket 2, when the long arm end passes through the cooling water jacket 2, the two clamping plates 7 on the support 4 are positioned at the outer sides of the two ends of the cooling water jacket 2, in the hoisting process of the crane, the support 4 on the bracket 1 is gradually jointed with the inner wall of the cooling water jacket 2, in the jointing process, the bearing seat 8 on the support 4 is limited by the inner wall of the cooling water jacket 2 and forces the bearing seat 8 to vertically slide and descend along with ascending, in the descending process, the linkage connecting rod 901 pushes the two first racks 9 to do linear motion towards the outer side of the support 4, in the process, the first racks 9 are in meshed transmission with the gear 10, and the gear 10 is in meshed transmission with the second rack 701 to drive the two clamping plates 7 to move towards the outer wall of the bearing seat 8, and along with the end of the pressing stroke of the bearing seat 8, the two clamping plates 7 are jointed on the outer walls of the two sides of the cooling water jacket 2 to realize clamping and fixing, the cooling water jacket 2 can not be displaced due to small-amplitude swing of the support 1 in the moving process of the support 1, the balance of the integral device during working is further improved, after the cooling water jacket 2 is completely attached to the bearing seat 8, the cooling water jacket 2 starts to be slowly lifted along with continuous rising, after the cooling water jacket 2 is completely lifted, the gravity center of the integral device shifts towards one side of the cooling water jacket 2, so that the integral device is in an inclined state towards one side of the cooling water jacket 2, and at the moment, a worker moves the balancing weight 3 towards one side far away from the cooling water jacket 2, so that the integral device is gradually in a horizontal state. In the embodiment, the distance of the descending stroke of the bearing seat 8 and the distance of the stroke of the two clamping plates 7 for displacing and clamping the cooling water jacket 2 are set according to the length from the outermost outer wall to the other outer wall in the axial direction of the cooling water jacket 2, and it should be noted that the height of the top of the bearing seat 8 before implementation is higher than that of the second rack 701, so that the inner wall of the cooling water jacket 2 supported by the bearing seat 8 does not touch the second rack 701 in the process of pressing down the bearing seat 8. After the cooling water jacket is installed, when the support 1 is detached, when the bearing seat 8 is attached to the inner wall of the cooling water jacket 2, the counterweight block 3 slides to one side of the cooling water jacket 2, then the support 1 is lowered by a crane, so that the bearing seat 8 is separated from the inner wall of the cooling water jacket 2, at this time, the bearing seat 8 is not under the weight of the cooling water jacket 2, the center of gravity of the whole support 1 deviates to the counterweight block 3, the whole device is restored to the state before the cooling water jacket 2 is lifted, and finally the support 1 is taken out of the cooling water jacket 2.
In another embodiment provided by the present invention, the present invention further includes an extension seat 6 disposed on the bracket 1, the extension seat 6 is provided with a counterweight 3, and the counterweight 3 is used to make the bracket 1 in a horizontal state, further, in this embodiment, a person skilled in the art can determine the weight of the counterweight 3 by logical analytic reasoning or limited experiments, so that when the counterweight 3 is located at the farthest end of the bracket 1, the counterweight 3 forms an opposite surface with the cooling water jacket 2 on the long arm end of the bracket 1 and makes the whole device in a horizontal state, which is convenient for a worker to butt joint the cooling water jacket 2.
In still another embodiment of the present invention, preferably, a plurality of first rollers 602 are oppositely disposed in the extension seat 6, and a sliding block 11 is disposed between the plurality of first rollers 602, the sliding block 11 is connected to the counterweight block 3 through the bottom steel bar 301, a threaded rod 601 is connected to the extension seat 6 by a thread, and one end of the threaded rod 601 is rotatably connected to the sliding block 11, further, a guide groove 603 is disposed on the extension seat 6, the first rollers 602 are rotatably disposed in the guide groove 603 in two rows, the sliding block 11 is slidably disposed between the two rows of first rollers 602, when the counterweight block 3 is adjusted by matching the sliding block 11 with the first rollers 602, the threaded rod 601 is rotated to be in threaded connection with the extension seat 6 and push the sliding block 11, the threaded rod 601 is used to convert the rotational motion into the linear motion, and the two rows of first rollers 602 are disposed to push the counterweight block 3 connected to the sliding block 11, compare with the balancing weight 3 that directly promotes the slip setting, this mode is comparatively laborsaving to through threaded connection from taking certain auto-lock effect, and in the operational environment who lifts by crane, support 1 all goes on slowly, does not have violent vibration and temperature variation, and then through the auto-lock effect of threaded rod 601 and extension seat 6, be sufficient for making balancing weight 3 in the in-process that support 1 hoisted cooling jacket 2 and removed completely, the condition that can not appear removing, make support 1 keep balanced stable.
In still another embodiment of the present invention, preferably, the sliding direction of the bearing seat 8 is perpendicular to the axial direction of the support 4, the bearing seat 8 is provided with a plurality of second rollers 801, the plurality of second rollers 801 abut against the inner wall of the cooling water jacket 2, further, the bearing seat 8 is vertically slidably disposed on the support 4, the bearing seat 8 is provided with grooves 802 that are oppositely opened, the plurality of second rollers 801 are rotatably disposed in the grooves 802, and the plurality of second rollers 801 are disposed on the bearing seat 8 in two rows, the second rollers 801 are used for contacting the bearing seat 8 when the cooling water jacket 2 contacts with the bearing seat 8, in some embodiments, when a worker places the support 4 under the inner wall of the cooling water jacket 2, the center of the support 4 is exactly at the same position as the center of the cooling water jacket 2, so that during the lifting process of the support 1, the bearing seat 8 contacts with the inner wall of the cooling water jacket 2, the two clamping plates 7 are just clamped on the outer wall of the cooling water jacket 2 as the ascending bearing seat 8 is pressed downwards by the force of the cooling water jacket 2, but in other embodiments, when the support 4 is placed below the cooling water jacket 2, the center of the support is deviated from the center of the cooling water jacket 2, so that the bearing seat 8 is pressed downwards to link the two clamping plates 7 to move towards the outer wall of the cooling water jacket 2 in the ascending process of the support 4, at the moment, one of the clamping plates 7 is already contacted with the outer wall of the cooling water jacket 2 in the displacement stroke due to the deviation, so that the bearing seat 8 cannot be pressed downwards continuously and clamped, and the two clamping plates 7 are not just clamped on the outer wall of the cooling water jacket 2 along with the pressing of the bearing seat 8, in this case, a worker only needs to manually push the cooling water jacket 2 on the second roller 801, and the cooling water jacket 2 is adjusted to the central point on the bearing seat 8 under the rolling of the second roller 801, in the process, when the cooling water jacket 2 is displaced, the clamping plates 7 which are contacted with the cooling water jacket 2 are not limited any more, so that the bearing seat 8 can continue to descend, and when the cooling water jacket 2 is slid to the center of the bearing seat 8 by a worker, the bearing seat 8 completes the downward stroke in the process and simultaneously allows the two clamping plates 7 to be clamped on the outer wall of the cooling water jacket 2.
In another embodiment provided by the invention, the lifting part is a transverse plate 101, the transverse plate 101 is axially parallel to the extension base 6, the transverse plate 101 is provided with a hook, the transverse plate 101 is provided with a rectangular groove, and a horizontal ruler 5 is embedded in the rectangular groove, when the bracket 1 lifts the cooling water jacket 2 in a suspended state, a worker can watch the horizontal ruler 5 through naked eyes to judge whether the whole bracket 1 is in a horizontal state, if the whole bracket 1 is not in the horizontal state, the worker can continue to rotate the threaded rod 601 to debug the position of the counterweight block 3 until the horizontal ruler 5 displays that the bracket 1 is in the horizontal state.
In another embodiment of the present invention, preferably, the first rack 9 is slidably disposed in the support 4, one end of the second rack 701 is slidably disposed on the support 4, the other end of the second rack 701 is fixedly disposed on the outer wall of the clamp plate 7, the gear 10 is rotatably disposed on the outer wall of the support 4, the clamp plate 7 is provided with the second rack 701, the gear 10 is respectively engaged with the first rack 9 and the second rack 701, further, when the load-bearing seat 8 vertically descends on the support 4, the first rack 9 slidably disposed in the support 4 in a linked manner is driven by the two connecting rods 901 hinged to the bottom of the load-bearing seat 8, and the two gears 10 are driven by the second rack 701 in a meshed manner during the rotation process, so as to synchronously slide on the top of the support 4 and drive the clamp plate 7 to displace toward the cooling water jacket 2.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a cooling water jacket installation auxiliary device, includes support (1), its characterized in that is provided with on support (1):
a lifting part for connecting a lifting hook;
the balancing weight (3) is positioned on one side of the bracket (1);
the support (4) is positioned on the other side of the support (1), a bearing seat (8) is arranged on the support (4) and used for supporting the cooling water jacket (2), and two clamping plates (7) are movably arranged on the support (4) and positioned on two sides of the bearing seat (8) respectively;
the transmission mechanism comprises a connecting rod (901), a first rack (9), a gear (10) and a second rack (701) which are sequentially connected, one end of the connecting rod (901) is hinged with the first rack (9), the other end of the connecting rod is hinged with the bearing seat (8), and the gear (10) is meshed with the second rack (701); when the bearing seat (8) is pressed downwards, the bearing seat (8) enables the first rack (9) to slide through the connecting rod (901), and the first gear (9) drives the second rack (701) to slide through the gear (10) so that the two clamping plates (7) can slide to clamp the cooling water jacket (2).
2. The auxiliary device for installing the cooling water jacket is characterized by further comprising an extension seat (6) arranged on the bracket (1), wherein a balancing weight (3) is arranged on the extension seat (6), and the balancing weight (3) is used for enabling the bracket (1) to be in a horizontal state.
3. The auxiliary device for installing the cooling water jacket is characterized in that a plurality of first rollers (602) are oppositely arranged in the extension seat (6), sliding blocks (11) are arranged between the first rollers (602), and the sliding blocks (11) are connected with the balancing weight (3) through bottom steel bars (301).
4. The cooling water jacket installation auxiliary device according to claim 3, characterized in that a threaded rod (601) is connected to the extension seat (6) in a threaded manner, and one end of the threaded rod (601) is rotatably connected to the sliding block (11).
5. A cooling water jacket installation aid according to claim 1, wherein the direction in which the load bearing seat (8) slides is perpendicular to the axial direction of the support (4).
6. The auxiliary device for installing the cooling water jacket is characterized in that a plurality of second rollers (801) are arranged on the bearing seat (8), and the second rollers (801) are abutted with the inner wall of the cooling water jacket (2).
7. The auxiliary device for installing the cooling water jacket is characterized in that the lifting part is a transverse plate (101), the transverse plate (101) is axially arranged in parallel with the extension seat (6), and a hook is arranged on the transverse plate (101).
8. The auxiliary device for installing the cooling water jacket is characterized in that a rectangular groove is formed in the transverse plate (101), and a horizontal rule (5) is embedded in the rectangular groove.
9. The cooling water jacket installation auxiliary device according to claim 1, characterized in that the first rack (9) is slidably arranged in the support (4), one end of the second rack (701) is slidably arranged on the support (4), and the other end is fixedly arranged on the outer wall of the clamping plate (7).
10. The cooling water jacket installation auxiliary device according to claim 9, characterized in that the gear (10) is rotatably arranged on the outer wall of the support (4), the clamping plate (7) is provided with a second rack (701), and the gear (10) is respectively meshed with the first rack (9) and the second rack (701).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110892167.3A CN113524087B (en) | 2021-08-04 | 2021-08-04 | Auxiliary device for installing cooling water jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110892167.3A CN113524087B (en) | 2021-08-04 | 2021-08-04 | Auxiliary device for installing cooling water jacket |
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| Publication Number | Publication Date |
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| CN113524087A true CN113524087A (en) | 2021-10-22 |
| CN113524087B CN113524087B (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110892167.3A Active CN113524087B (en) | 2021-08-04 | 2021-08-04 | Auxiliary device for installing cooling water jacket |
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| US20200398384A1 (en) * | 2019-06-24 | 2020-12-24 | Sheng Tsung Wang | Pipe clamping apparatus of pipe processing machine |
| CN212609162U (en) * | 2020-03-18 | 2021-02-26 | 苏州山常建设工程有限公司 | Hoisting accessory is used in sewer line construction |
| CN112404515A (en) * | 2020-12-06 | 2021-02-26 | 黄杰胜 | Processing device for tubular workpiece |
| CN112879666A (en) * | 2021-01-13 | 2021-06-01 | 安徽金川建设工程有限公司 | A water conservancy pipeline supports connection structure for hydraulic engineering |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020206577A1 (en) * | 2019-04-08 | 2020-10-15 | 江苏铭格锻压设备有限公司 | Clamping device for forging press |
| US20200398384A1 (en) * | 2019-06-24 | 2020-12-24 | Sheng Tsung Wang | Pipe clamping apparatus of pipe processing machine |
| CN211540097U (en) * | 2019-12-03 | 2020-09-22 | 连云港建博自动化设备有限公司 | Pipe placing platform for pipe welding machine |
| CN212609162U (en) * | 2020-03-18 | 2021-02-26 | 苏州山常建设工程有限公司 | Hoisting accessory is used in sewer line construction |
| CN111268557A (en) * | 2020-03-25 | 2020-06-12 | 徐州国联建机有限公司 | High stability tower crane for tubular product |
| CN111660593A (en) * | 2020-06-22 | 2020-09-15 | 辽宁鸿鑫节能科技有限公司 | Equipment and process for manufacturing polyurethane-sprayed polyethylene-wound thermal insulation pipe |
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| CN112879666A (en) * | 2021-01-13 | 2021-06-01 | 安徽金川建设工程有限公司 | A water conservancy pipeline supports connection structure for hydraulic engineering |
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| CN113524087B (en) | 2022-03-08 |
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