CN114753267B - Bridge swivel support leveling device and leveling method thereof - Google Patents
Bridge swivel support leveling device and leveling method thereof Download PDFInfo
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- CN114753267B CN114753267B CN202210446048.XA CN202210446048A CN114753267B CN 114753267 B CN114753267 B CN 114753267B CN 202210446048 A CN202210446048 A CN 202210446048A CN 114753267 B CN114753267 B CN 114753267B
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- swivel support
- leveling
- swivel
- bridge
- jack
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- 238000000034 method Methods 0.000 title claims description 12
- 239000004575 stone Substances 0.000 claims abstract description 24
- 239000012791 sliding layer Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a bridge swivel support leveling device which comprises a jack, a height-adjusting slide block, a swivel support bracket and two groups of leveling bolts, wherein the jack is fixed on a swivel support backing stone, the height-adjusting slide block is arranged on the swivel support backing stone and is fixedly connected with a horizontal ejector rod of the jack, the top surface of the height-adjusting slide block is an upper inclined surface, the bottom surface of the swivel support bracket is a lower inclined surface, the middle part of the swivel support bracket is supported on the upper inclined surface of the height-adjusting slide block, two ends of the swivel support bracket are respectively connected with a group of vertically arranged leveling bolts, and the bottom end of each leveling bolt is supported on the swivel support backing stone. According to the invention, the working direction of the jack is adjusted from vertical lifting to horizontal pushing through the height adjusting slide block, the pushing force exerted by the jack is far smaller than the gravity of the swivel support borne by lifting, and the leveling bolt is introduced as a supporting component, so that the auxiliary construction of large-scale machines such as a crane is separated, the construction cost is reduced, and the installation efficiency of the swivel support is improved.
Description
Technical Field
The invention relates to the technical field of swivel bridges, in particular to a leveling device and a leveling method for a bridge swivel support.
Background
Along with the acceleration of the modern process in China, public transportation construction is increasingly developed, and in order to dredge and relieve urban traffic congestion, overpasses which are layered up and down and are mutually undisturbed in multiple directions are increasingly applied to the construction of expressway intercommunication, urban expressways and arterial roads. In the construction of bridges which need to span the existing highways and railways, common construction processes include hanging basket cantilever pouring, steel pipe column bracket door openings and swivel bridges. The swivel bridge converts the overhead operation of the obstacle into the operation on the shore or near the ground, is widely applied to the situation that the overhead canyon, the river, the railway, the expressway and the like cannot be supported, ensures the safe operation of the existing line, and is widely applied to the construction of the overhead bridge at home and abroad.
The newly built expressway and railway often adopt a swivel bridge mode to span the existing line, and in the ultra-heavy bridge swivel construction process, the rapid and accurate installation of a core component swivel device is a key link in the swivel process. The swivel support is used as a core of the swivel device, and needs to be precisely leveled in order to meet the normal working requirement of the swivel device, so that the top surface of an upper seat plate of the swivel support is closely attached to the bottom of an upper turntable, and the swivel support is uniformly stressed, so that shearing deformation caused by uneven stress is avoided, early damage of the swivel support is formed, and the normal swivel of a bridge is influenced.
For a common bridge support for a road and a railway bridge, in general, according to the design requirements of a longitudinal slope and a transverse slope of the bridge, after the swivel support is hoisted to a design position (a support bolt hole) and rough flat, a steel plate sheet is adopted to be padded under the direction of divergence of the longitudinal slope and the transverse slope of the bridge for leveling the swivel support.
And (3) leveling a swivel support: under the assistance of a crane and an electronic level, comparing the measured heights of four corner points of the swivel support with the actual heights, and lifting the swivel support when the height difference does not meet the design requirement, wherein the position lower than the design height adopts a lower pad steel plate sheet at the position adjacent to the pad stone. After the placement is completed, the swivel support is hung to a design position, the electronic level is continuously adopted to carry out elevation measurement of four corner points, and the hanging-steel plate sheet is carried out again when the elevation difference does not meet the design requirement, so that the swivel support is reciprocally leveled. The leveling mode has longer working period and complicated working procedures. For construction adjacent to the existing line, the crane is in a working state for a long time, so that a certain risk is generated for the safe operation of the existing line, and larger mechanical shift cost and labor cost are generated, so that the cost is higher, the automation degree is insufficient, the efficiency is low, and the working hours are delayed. If the leveling of the swivel support is carried out by adopting a mode of the underlying hydraulic jack, the swivel support and the filler stone have small height difference, and the swivel support is required to be placed in the pre-buried bolt hole and does not have the space condition of the underlying hydraulic jack.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bridge swivel support leveling device and a leveling method thereof, which are separated from auxiliary construction of large-scale machines such as a crane, reduce the cost of leveling construction and improve the installation efficiency of a swivel support.
The technical scheme of the invention is as follows:
the utility model provides a bridge support leveling device that turns, includes jack, heightening slider, turns support bracket and two sets of leveling bolt, the jack be fixed in on the support backing stone that turns, the ejector pin level setting of jack, the heightening slider set up on the support backing stone that turns and with the ejector pin fixed connection of jack, the top surface of heightening slider is the upper inclined plane, the bottom surface of turning support bracket is the lower inclined plane, the supporting surface that turns support bracket is used for supporting the support that turns is the horizontal plane, the middle part of turning support bracket supports on the upper inclined plane of heightening slider, the both ends of turning support bracket are connected with the leveling bolt of a set of vertical setting respectively, the bottom of every leveling bolt all supports on turning support backing stone.
The rotary support backing stone is fixed with a jack counter-force seat, and the jack is connected to the jack counter-force seat.
The support bracket of turning body is L-shaped supporting plate structure, the outer side surface of the vertical part of the support bracket of turning body horizontally faces the position where the jack is arranged, the top surface of the horizontal part of the support bracket of turning body is horizontal surface, and the bottom surface of the horizontal part of the support bracket of turning body is lower inclined surface.
The bottom surface of the height-adjusting sliding block is provided with a sliding layer.
The two ends of the swivel support bracket are provided with through holes which are vertically communicated, a connecting nut is fixed on the periphery of the top end of each through hole on the swivel support bracket, each leveling bolt is connected with the connecting nut through threads after passing through the corresponding through hole on the swivel support bracket, each leveling bolt is connected with a locking nut through threads, and the lower inclined plane of the swivel support bracket is supported on the locking nuts of the two groups of leveling bolts.
The leveling method of the bridge swivel support comprises the following steps:
(1) Firstly, a plurality of bridge swivel support leveling devices are arranged on a swivel support backing stone, and the bridge swivel support leveling devices are uniformly distributed along the circumferential direction of a swivel support;
(2) Hoisting the swivel support onto the support surfaces of swivel support brackets of the plurality of bridge swivel support leveling devices, releasing pressure, and bearing the weight of the swivel support by the swivel support brackets and the heightening slide blocks;
(3) The elevation of each position on the edge of the upper surface of the swivel support is actually measured, for the edge position to be heightened, a jack corresponding to the edge position is pushed to perform pushing work, a heightening slide block horizontally moves towards the circle center of the swivel support to drive a swivel support bracket to move upwards until the edge part of the swivel support is upwards supported to the elevation, and thus the leveling work of the swivel support is completed;
(4) After the swivel support is leveled, the bottom end of a leveling bolt on the swivel support bracket is screwed to be in contact with a swivel support backing stone to replace a height-adjusting slide block to give supporting force to the swivel support, and then a jack drives the height-adjusting slide block to horizontally move back to the circle center of the swivel support, so that the leveling bolt and the swivel support bracket bear the weight of the swivel support together.
The bridge turning support leveling devices are symmetrically arranged along the radial direction of the turning support.
The swivel support bracket is of an L-shaped supporting plate structure, and when the swivel support is hoisted on the supporting surface of the swivel support bracket of the plurality of bridge swivel support leveling devices, the vertical parts of the swivel support brackets of the plurality of bridge swivel support leveling devices are contacted with the edges of the swivel supports.
The invention has the advantages that:
according to the invention, the working direction of the jack is adjusted from vertical lifting to horizontal pushing through the height adjusting slide block, the jacking force exerted by the jack is far smaller than the gravity of the swivel support borne by lifting, and the leveling bolt is introduced as a supporting component to separate from auxiliary construction of large-scale machines such as a crane, so that the leveling construction of the swivel bridge support adjacent to the existing line can be directly used, the construction cost is greatly reduced, the installation efficiency of the swivel support is improved, and the adverse effect of the large-scale machine construction on the safe operation of the existing line is avoided.
Drawings
Figure 1 is a longitudinal section through the invention for leveling the swivel support.
Figure 2 is a top view of the present invention for swivel support leveling.
Fig. 3 is a schematic view of the structure of the leveling bolt attached to the swivel support bracket of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
See fig. 1-3, a bridge swivel support leveling device, including jack reaction seat 2, jack 3, heightening slider 4, swivel support bracket 5 and two sets of leveling bolt 6, jack reaction seat 2 is fixed in on the swivel support backing stone 1, jack 3 connects on jack reaction seat 2, the ejector pin level setting of jack 3, heightening slider 4 sets up on swivel support backing stone 1 and with jack 3's ejector pin fixed connection, the top surface of heightening slider 4 is the upper inclined plane, swivel support bracket 5 is L type layer board structure, the lateral surface level of the vertical part of swivel support bracket 5 is towards the position that jack 3 set up, the bottom surface of swivel support bracket 5 horizontal part is the lower inclined plane, the top surface of swivel support bracket 5 horizontal part is the horizontal plane, the middle part of swivel support bracket 5 supports on the upper inclined plane of heightening slider 4, the both ends of swivel support bracket 5 are connected with a set of vertically set up bolt respectively, two perforation holes are all provided with on the both ends of swivel support bracket 5 horizontal part and link nut 8, the top end of each perforation nut 7 that is located on the support bracket 5 corresponds to each screw nut 8 of the nut that is connected with the corresponding to the upper and lower nut of swivel support bracket 6, the nut that the nut is connected with the nut 8 of each screw nut that the nut is located on the support bracket 6.
The bottom surface of the height-adjusting slide block 4 is provided with a sliding layer, and the sliding layer can be a stainless steel plate fixed on the bottom surface of the height-adjusting slide block or a butter layer smeared on the bottom surface of the height-adjusting slide block, so that sliding friction force between the height-adjusting slide block 4 and the swivel support cushion stone 1 is reduced.
The leveling method of the bridge swivel support comprises the following steps:
(1) Firstly, four bridge swivel support leveling devices are arranged on a swivel support backing stone 1 and are uniformly distributed along the circumferential direction of a swivel support 9;
(2) Hoisting the swivel support 9 to the top surfaces of the horizontal parts of the swivel support brackets 5 of the four bridge swivel support leveling devices, releasing pressure, enabling the vertical parts of the four swivel support brackets 5 to be in contact with the edges of the swivel support 9, and jointly bearing the weight of the swivel support 9 by the swivel support brackets 5 and the heightening slide blocks 4;
(3) The elevation of each position on the edge of the upper surface of the swivel support 9 is measured by utilizing an electronic level gauge, for the edge position to be heightened, the jack 3 corresponding to the edge position is pushed, the heightening slide block 4 horizontally moves towards the circle center of the swivel support 9 to drive the swivel support bracket 5 to move upwards until the edge part of the swivel support 9 is supported to the elevation, and thus the leveling work of the swivel support 9 is completed;
(4) After the swivel support 9 is leveled, the bottom end of the leveling bolt 6 on the swivel support bracket is screwed to be in contact with the swivel support backing stone 1 to replace the supporting force given by the heightening slide block 4 to the swivel support 9, then the jack 3 drives the heightening slide block 4 to horizontally move back to the circle center of the swivel support 9, and the leveling bolt 6 and the swivel support bracket 5 bear the weight of the swivel support 9 together.
The jack thrust F required for heightening is smaller, and is specifically calculated by considering the gravity P of the swivel support, the friction force between the swivel support 9 and the swivel support bracket 5, and the friction force between the heightening slide block 4 and the swivel support backing stone 1; after the stainless steel plate is fixed on the bottom surface of the heightening slide block, the friction coefficient mu=0.05 between the heightening slide block 4 and the swivel support backing stone 1 is calculated as follows: the whole system is subjected to stress analysis to obtain: the slope tanα=0.05 and μ=0.05 of the upper ramp of the lifting slide is brought in, since the lifting slide 4 has a mass much smaller than the swivel support 9 and a weight negligible, the jacking force F of the jack 3 is thus obtained approximately 0.15 times the weight of the swivel support 9.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a bridge support leveling device that turns, its characterized in that: the lifting jack is fixed on a swivel support backing stone, a push rod of the lifting jack is horizontally arranged, the lifting slide block is arranged on the swivel support backing stone and is fixedly connected with the push rod of the lifting jack, the top surface of the lifting slide block is an upper inclined surface, the swivel support bracket is of an L-shaped supporting plate structure, the outer side surface of the vertical part of the swivel support bracket horizontally faces to the position where the lifting jack is arranged, the top surface of the horizontal part of the swivel support bracket is a horizontal surface, the bottom surface of the horizontal part of the swivel support bracket is a lower inclined surface, the middle part of the swivel support bracket is supported on the upper inclined surface of the lifting slide block, two ends of the swivel support bracket are respectively connected with a group of vertically arranged leveling bolts, and the bottom end of each leveling bolt is supported on the swivel support backing stone;
the method for leveling the swivel support by using the bridge swivel support leveling device specifically comprises the following steps:
(1) Firstly, a plurality of bridge swivel support leveling devices are arranged on a swivel support backing stone, and the bridge swivel support leveling devices are uniformly distributed along the circumferential direction of a swivel support;
(2) Hoisting the swivel support onto the support surfaces of swivel support brackets of the plurality of bridge swivel support leveling devices, releasing pressure, and bearing the weight of the swivel support by the swivel support brackets and the heightening slide blocks;
(3) The elevation of each position on the edge of the upper surface of the swivel support is actually measured, for the edge position to be heightened, a jack corresponding to the edge position is pushed to perform pushing work, a heightening slide block horizontally moves towards the circle center of the swivel support to drive a swivel support bracket to move upwards until the edge part of the swivel support is upwards supported to the elevation, and thus the leveling work of the swivel support is completed;
(4) After the swivel support is leveled, the bottom end of a leveling bolt on the swivel support bracket is screwed to be in contact with a swivel support backing stone to replace a height-adjusting slide block to give supporting force to the swivel support, and then a jack drives the height-adjusting slide block to horizontally move back to the circle center of the swivel support, so that the leveling bolt and the swivel support bracket bear the weight of the swivel support together.
2. The bridge swivel support leveling device of claim 1, wherein: the rotary support backing stone is fixed with a jack counter-force seat, and the jack is connected to the jack counter-force seat.
3. The bridge swivel support leveling device of claim 1, wherein: the bottom surface of the height-adjusting sliding block is provided with a sliding layer.
4. The bridge swivel support leveling device of claim 1, wherein: the two ends of the swivel support bracket are provided with through holes which are vertically communicated, a connecting nut is fixed on the periphery of the top end of each through hole on the swivel support bracket, each leveling bolt is connected with the connecting nut through threads after passing through the corresponding through hole on the swivel support bracket, each leveling bolt is connected with a locking nut through threads, and the lower inclined plane of the swivel support bracket is supported on the locking nuts of the two groups of leveling bolts.
5. The bridge swivel support leveling device of claim 1, wherein: the bridge turning support leveling devices are symmetrically arranged along the radial direction of the turning support.
6. The bridge swivel support leveling device of claim 1, wherein: the swivel support bracket is of an L-shaped supporting plate structure, and when the swivel support is hoisted on the supporting surface of the swivel support bracket of the plurality of bridge swivel support leveling devices, the vertical parts of the swivel support brackets of the plurality of bridge swivel support leveling devices are contacted with the edges of the swivel supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210446048.XA CN114753267B (en) | 2022-04-26 | 2022-04-26 | Bridge swivel support leveling device and leveling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210446048.XA CN114753267B (en) | 2022-04-26 | 2022-04-26 | Bridge swivel support leveling device and leveling method thereof |
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| Publication Number | Publication Date |
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| CN114753267A CN114753267A (en) | 2022-07-15 |
| CN114753267B true CN114753267B (en) | 2023-09-08 |
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| CN202210446048.XA Active CN114753267B (en) | 2022-04-26 | 2022-04-26 | Bridge swivel support leveling device and leveling method thereof |
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| CN115467556B (en) * | 2022-08-17 | 2024-02-02 | 湖北工业大学 | High-precision multidirectional moving component displacement device and moving method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829893A (en) * | 2010-04-22 | 2010-09-15 | 上海江南长兴重工有限责任公司 | Horizontal mounting trolley of large-scale shaft workpiece |
| CN201871661U (en) * | 2010-11-26 | 2011-06-22 | 天津市天锻压力机有限公司 | Leveling device of large-travel traveling table of forging hydraulic press |
| CN104153303A (en) * | 2014-08-28 | 2014-11-19 | 刘其伟 | Method for replacing self-balancing backpressure type bridge single-support |
| CN110424725A (en) * | 2019-08-23 | 2019-11-08 | 吉林大学 | A kind of jacking and jacking stress monitoring system |
| CN110670485A (en) * | 2019-09-19 | 2020-01-10 | 中铁武汉勘察设计研究院有限公司 | Bridge construction method combining rotation and height adjustment |
| CN210194453U (en) * | 2019-06-14 | 2020-03-27 | 河北省水利水电勘测设计研究院 | Water conservancy bridge pier stud deviation correcting device |
| CN212101818U (en) * | 2020-03-25 | 2020-12-08 | 宁波天胜传动件有限公司 | Bottom supporting mechanism for jack |
| CN213171277U (en) * | 2020-08-25 | 2021-05-11 | 江苏巨邦机械制造有限公司 | Multifunctional hydraulic jack |
| CN213328711U (en) * | 2020-09-25 | 2021-06-01 | 陈列邦 | Bridge rotation construction assistance-type lower rotation base |
| CN213416105U (en) * | 2020-09-24 | 2021-06-11 | 成都三本机电设备有限公司 | High-precision jack capable of achieving multi-angle self-adaptive leveling |
| CN213976777U (en) * | 2020-12-30 | 2021-08-17 | 山东中翻重工有限公司 | Moving wheel device of container turnover machine |
| CN215669073U (en) * | 2021-08-02 | 2022-01-28 | 中铁二十局集团第五工程有限公司 | Bridge construction is with ball pivot position control device that turns |
| CN216243277U (en) * | 2021-11-01 | 2022-04-08 | 株洲华信精密工业股份有限公司 | High-load variable displacement hydraulic leveling device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457789A (en) * | 2022-03-04 | 2022-05-10 | 中庆建设有限责任公司 | Bored pile steel reinforcement cage mounting platform |
-
2022
- 2022-04-26 CN CN202210446048.XA patent/CN114753267B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829893A (en) * | 2010-04-22 | 2010-09-15 | 上海江南长兴重工有限责任公司 | Horizontal mounting trolley of large-scale shaft workpiece |
| CN201871661U (en) * | 2010-11-26 | 2011-06-22 | 天津市天锻压力机有限公司 | Leveling device of large-travel traveling table of forging hydraulic press |
| CN104153303A (en) * | 2014-08-28 | 2014-11-19 | 刘其伟 | Method for replacing self-balancing backpressure type bridge single-support |
| CN210194453U (en) * | 2019-06-14 | 2020-03-27 | 河北省水利水电勘测设计研究院 | Water conservancy bridge pier stud deviation correcting device |
| CN110424725A (en) * | 2019-08-23 | 2019-11-08 | 吉林大学 | A kind of jacking and jacking stress monitoring system |
| CN110670485A (en) * | 2019-09-19 | 2020-01-10 | 中铁武汉勘察设计研究院有限公司 | Bridge construction method combining rotation and height adjustment |
| CN212101818U (en) * | 2020-03-25 | 2020-12-08 | 宁波天胜传动件有限公司 | Bottom supporting mechanism for jack |
| CN213171277U (en) * | 2020-08-25 | 2021-05-11 | 江苏巨邦机械制造有限公司 | Multifunctional hydraulic jack |
| CN213416105U (en) * | 2020-09-24 | 2021-06-11 | 成都三本机电设备有限公司 | High-precision jack capable of achieving multi-angle self-adaptive leveling |
| CN213328711U (en) * | 2020-09-25 | 2021-06-01 | 陈列邦 | Bridge rotation construction assistance-type lower rotation base |
| CN213976777U (en) * | 2020-12-30 | 2021-08-17 | 山东中翻重工有限公司 | Moving wheel device of container turnover machine |
| CN215669073U (en) * | 2021-08-02 | 2022-01-28 | 中铁二十局集团第五工程有限公司 | Bridge construction is with ball pivot position control device that turns |
| CN216243277U (en) * | 2021-11-01 | 2022-04-08 | 株洲华信精密工业股份有限公司 | High-load variable displacement hydraulic leveling device |
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| Publication number | Publication date |
|---|---|
| CN114753267A (en) | 2022-07-15 |
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