CN108360533B - Steel wedge block fixing device - Google Patents

Steel wedge block fixing device Download PDF

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Publication number
CN108360533B
CN108360533B CN201810331351.9A CN201810331351A CN108360533B CN 108360533 B CN108360533 B CN 108360533B CN 201810331351 A CN201810331351 A CN 201810331351A CN 108360533 B CN108360533 B CN 108360533B
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China
Prior art keywords
wedge block
wedge
upper wedge
block
sliding surface
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CN201810331351.9A
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Chinese (zh)
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CN108360533A (en
Inventor
贾尚华
王彦杰
陶利
王琰
金志新
韦坤
郑诚
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Shanghai Road and Bridge Group Co Ltd
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Shanghai Road and Bridge Group Co Ltd
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Priority to CN201810331351.9A priority Critical patent/CN108360533B/en
Publication of CN108360533A publication Critical patent/CN108360533A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The invention discloses a steel wedge block fixing device which is used for being inserted into a groove at the movable end of a steel support to be fixed to fix the steel support. The steel wedge block fixing device includes: an upper wedge, a lower wedge and a connecting assembly. The upper wedge block comprises an upper wedge block compression surface and an upper wedge block sliding surface, the upper wedge block compression surface is opposite to the upper wedge block sliding surface, and the upper wedge block compression surface is used for being compressed on one inner wall of a groove of the movable end of the steel support to be fixed. The lower wedge block comprises a lower wedge block compression surface and a lower wedge block sliding surface, the lower wedge block compression surface is away from the lower wedge block sliding surface, the lower wedge block compression surface is used for being compressed on the other inner wall of the groove at the movable end of the steel support to be fixed, and the upper wedge block sliding surface and the lower wedge block sliding surface can be mutually attached. The upper wedge can be fixed to the lower wedge by a connecting assembly. The invention can ensure that the upper wedge block and the lower wedge block cannot slide after the upper wedge block and the lower wedge block are tightly pressed on the steel support.

Description

Steel wedge block fixing device
Technical Field
The invention relates to a steel wedge block fixing device.
Background
The steel wedge block is a necessary component for fixing the steel support in foundation pit construction, and is inserted into a rectangular groove at the movable end of the steel support so as to provide axial supporting force for the steel support. For convenient construction, at least one pair of wedge-shaped steel wedges are arranged in one group of steel wedges. The length in the horizontal direction of the wedge-shaped steel wedge blocks can be adjusted by sliding the two inclined planes of the wedge-shaped steel wedge blocks relative to each other, so that the purpose that the grooves of the movable ends of the steel support are fully filled is achieved, and the effect of limiting the free movement of the movable ends of the steel support is achieved.
Conventional wedge-shaped steel wedge blocks rely on the characteristic of mutual friction and self-locking to keep stability when stressed, so that the inclination of wedge inclined planes cannot be too large. If the inclined plane is too large, slippage is easily generated between the steel wedge blocks, so that the supporting capacity of the steel support is reduced and even the steel support fails. However, even if the inclined angle of the inclined plane is not large, the steel wedge block still has the possibility of sliding under the complex stress environment state when the foundation pit is excavated.
Disclosure of Invention
The invention aims to overcome the defect that wedge-shaped steel wedges for fastening steel supports in the prior art can slide relatively to influence the stability of the steel supports, and provides a steel wedge fixing device capable of fixing the steel supports without sliding relatively.
The invention solves the technical problems by the following technical scheme:
a steel wedge block fixing device for fixing a steel support inserted into a groove of a loose end of the steel support to be fixed, the steel wedge block fixing device comprising:
the upper wedge block comprises an upper wedge block compression surface and an upper wedge block sliding surface, the upper wedge block compression surface is opposite to the upper wedge block sliding surface, and the upper wedge block compression surface is used for being compressed on one inner wall of a groove at the movable end of the steel support to be fixed;
the lower wedge comprises a lower wedge pressing surface and a lower wedge sliding surface, the lower wedge pressing surface and the lower wedge sliding surface are deviated, the lower wedge pressing surface is used for being pressed on the other inner wall of the groove at the movable end of the steel support to be fixed, the upper wedge sliding surface and the lower wedge sliding surface can be mutually attached, the upper wedge can slide along the extending direction of the lower wedge sliding surface, and the distance between the upper wedge pressing surface and the lower wedge pressing surface is changed along with the sliding of the upper wedge;
and the upper wedge block can be fixed on the lower wedge block through the connecting assembly.
Preferably, the connecting assembly comprises a connecting rod and a nut, a connecting hole is formed in the upper wedge block, one end of the connecting rod is fixed relative to the lower wedge block, an external thread is arranged at the other end of the connecting rod, and the connecting rod penetrates through the connecting hole and is in threaded connection with the nut.
In this scheme, utilize connecting rod and nut structure can guarantee to keep fixed connection between last voussoir and the lower voussoir. Meanwhile, the steel wedge block fixing device also keeps the characteristic that a conventional steel wedge block is self-locked by means of friction of sliding surfaces of an upper wedge block and a lower wedge block.
Preferably, the connecting hole is a oblong hole, the axial direction of the connecting rod is parallel to the axial direction of the connecting hole, and the connecting rod can slide along with the upper wedge block to move relative to the connecting hole along the extending direction of the long diameter of the connecting hole.
In this scheme, slotted hole structure can avoid producing the interference to last voussoir slip.
Preferably, the upper wedge pressing surface and the lower wedge pressing surface are parallel, the connecting rod is parallel to the upper wedge pressing surface, the connecting rod is located at the outer side of the lower wedge sliding surface, and the projection of the axis of the connecting rod on the lower wedge sliding surface is parallel to the sliding direction of the upper wedge.
In this scheme, the connecting rod is on a parallel with last voussoir pressurized surface and lower voussoir pressurized surface, can guarantee that the connecting rod can not produce the interference between last voussoir pressurized surface, the lower voussoir pressurized surface.
Preferably, the connecting rod is located outside the sliding surface of the lower wedge block, and the projection of the axis of the connecting rod on the sliding surface of the lower wedge block is parallel to the sliding direction of the upper wedge block and is located at the middle position of the sliding surface of the lower wedge block;
the projection of the axis of the connecting hole on the upper wedge sliding surface is positioned at the middle position of the upper wedge sliding surface.
Preferably, a guiding part is fixed on the sliding surface of the lower wedge block, one end of the connecting rod is fixed on the guiding part, the connecting hole penetrates through the sliding surface of the upper wedge block and forms a groove, and the guiding part can be matched with the groove.
In this scheme, the direction that the guide part can be with recess assorted, guarantees that the direction that the relative lower voussoir of upper voussoir slided is accurate.
Preferably, the lower wedge block further comprises a top and a bottom, and the top of the lower wedge block and the bottom of the lower wedge block are positioned in the sliding direction of the upper wedge block;
the upper wedge block further comprises a top and a bottom, and the top of the upper wedge block and the bottom of the upper wedge block are positioned in the sliding direction of the upper wedge block;
the bottom of the upper wedge block is opposite to the top of the lower wedge block, an upper limiting block is fixed at the bottom of the upper wedge block, and the upper limiting block can be abutted to the top of the lower wedge block;
and/or the bottom of the lower wedge block is fixed with a lower limiting block, and the lower limiting block can be abutted to the top of the upper wedge block.
In the scheme, the upper limiting block and the lower limiting block are used for limiting the sliding displacement of the upper wedge block.
Preferably, the lower wedge block further comprises a lower wedge block side surface, the lower wedge block side surface is connected with the lower wedge block compression surface and the lower wedge block sliding surface, and a lower limit column is arranged on the lower wedge block side surface;
and/or, the upper wedge block further comprises an upper wedge block side surface, the upper wedge block side surface is connected with the upper wedge block compression surface and the upper wedge block sliding surface, and an upper limit column is arranged on the upper wedge block side surface.
In the scheme, the lower limit column and the upper limit column are used for preventing the lower wedge block and the upper wedge block from sliding down from the grooves of the movable ends of the steel supports to be fixed.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that:
the upper wedge block and the lower wedge block can relatively move, so that the distance between the pressed surface of the upper wedge block and the pressed surface of the lower wedge block is changed, and the grooves of the loose ends of the steel support to be fastened are fully filled; meanwhile, the upper wedge block can be fixed on the lower wedge block through the connecting assembly, so that the upper wedge block and the lower wedge block cannot slide after being tightly pressed on the steel support.
Drawings
Fig. 1 is a schematic view showing the structure of the steel wedge fixing device in a position state in the preferred embodiment of the present invention.
Fig. 2 is a schematic view showing the structure of the steel wedge fixing device in another position state in the preferred embodiment of the present invention.
Fig. 3 is a schematic view of the structure of the steel wedge fixing device according to the preferred embodiment of the present invention after the upper wedge is removed.
Fig. 4 is a schematic view of the structure of the upper wedge in the preferred embodiment of the present invention.
Fig. 5 is a schematic view showing a structure in which a steel wedge fixing device is installed in a groove of a loose end of a steel support in a preferred embodiment of the present invention, wherein broken lines represent an internal structure.
Reference numerals illustrate:
upper wedge 100
Upper wedge compression face 110
Upper wedge sliding surface 120
Connection hole 130
Groove 140
Upper stopper 150
Upper limit post 160
Upper wedge side 170
Lower wedge 200
Lower wedge compression face 210
Lower wedge sliding surface 220
Lower stopper 230
Lower limit post 240
Lower wedge side 250
Connection assembly 300
Connecting rod 310
Nut 320
Guide part 400
Steel support 500
Detailed Description
The invention is further illustrated by means of examples which follow, without thereby restricting the scope of the invention thereto.
Fig. 1 and 2 show a steel wedge fixing device for fixing a steel support to be fixed in a groove of a loose end of the steel support 500. The steel wedge block fixing device includes: an upper wedge 100, a lower wedge 200, and a connection assembly 300. The upper wedge 100 includes an upper wedge pressing surface 110 and an upper wedge sliding surface 120, the upper wedge pressing surface 110 and the upper wedge sliding surface 120 are opposite, and the upper wedge pressing surface 110 is used for pressing an inner wall of a groove of the loose end of the steel support 500 to be fixed. The lower wedge 200 includes a lower wedge pressing surface 210 and a lower wedge sliding surface 220, the lower wedge pressing surface 210 and the lower wedge sliding surface 220 are away from each other, the lower wedge pressing surface 210 is used for being pressed against the other inner wall of the groove of the loose end of the steel support 500 to be fixed, the upper wedge sliding surface 120 and the lower wedge sliding surface 220 can be mutually attached, the upper wedge 100 can slide along the extending direction of the lower wedge sliding surface 220, and the distance between the upper wedge pressing surface 110 and the lower wedge pressing surface 210 changes along with the sliding of the upper wedge 100; the upper wedge 100 can be fixed to the lower wedge 200 by the connection assembly 300.
In this embodiment, the connection assembly 300 includes a connection rod 310 and a nut 320, a connection hole 130 is formed in the upper wedge 100, one end of the connection rod 310 is fixed with respect to the lower wedge 200, the other end of the connection rod 310 is provided with external threads, and the connection rod 310 is connected to the nut 320 through the connection hole 130.
When the steel wedge fixing device is inserted into the groove of the loose end of the steel support 500 to be fixed, thereby fixing the steel support 500: the upper wedge sliding surface 120 and the lower wedge sliding surface 220 abut against each other, and force is applied to the upper wedge 100 or the lower wedge 200, so that the upper wedge 100 slides with respect to the lower wedge 200, and the distance between the upper wedge pressing surface 110 and the lower wedge pressing surface 210 increases, thereby pressing the steel support 500. At this time, the upper wedge 100 and the lower wedge 200 are fixed to each other by using the connecting rod 310 and the nut 320 structure, thereby ensuring that the sliding does not occur between the upper wedge 100 and the lower wedge 200 when the axial force of the loose end of the steel support 500 to be fixed is changed, thereby ensuring the reliability of the fastening function of the steel wedge fixing device.
In addition, the connecting hole 130 is a oblong hole, the axial direction of the connecting rod 310 is parallel to the axial direction of the connecting hole 130, and the connecting rod 310 can slide along the upper wedge 100 to move relative to the connecting hole 130 along the extending direction of the long diameter of the connecting hole 130. The upper and lower wedge compression surfaces 110 and 210 are parallel, the connecting rod 310 is parallel to the upper wedge compression surface 110, the connecting rod 310 is located outside the lower wedge sliding surface 220, and the projection of the axis of the connecting rod 310 on the lower wedge sliding surface 220 is parallel to the sliding direction of the upper wedge 100.
When the upper wedge 100 slides relative to the lower wedge 200, the connecting rod 310 can move along the longitudinal direction of the oblong hole, thereby ensuring that the connecting hole 130 does not interfere with the sliding of the upper wedge 100. Meanwhile, the connecting rod 310 is parallel to the upper wedge pressing surface 110 and the lower wedge pressing surface 210, so that interference between the connecting rod 310 and the upper wedge pressing surface 110 and the lower wedge pressing surface 210 can be avoided.
Connecting rod 310 is located outside of lower wedge sliding surface 220, and the projection of the axis of connecting rod 310 on lower wedge sliding surface 220 is parallel to the sliding direction of upper wedge 100 and is located in the middle of lower wedge sliding surface 220. The projection of the axis of the connecting hole 130 onto the upper wedge sliding surface 120 is located at the middle position of the upper wedge sliding surface 120. The connecting rod 310 and the connecting hole 130 are respectively positioned at the middle positions of the lower wedge sliding surface 220 and the upper wedge sliding surface 120, thereby enhancing the reliability of the connection of the connecting rod 310 and the connecting hole 130 and avoiding the failure of the connecting structure.
As will be understood from fig. 3 and 4, a guide 400 is fixed to the lower wedge sliding surface 220, one end of the connecting rod 310 is fixed to the guide 400, the connecting hole 130 passes through the upper wedge sliding surface 120 and forms a groove 140, and the guide 400 can be matched with the groove 140. The guide 400 can be matched with the groove 140 to ensure that the sliding direction of the upper wedge 100 relative to the lower wedge 200 is accurate.
In addition, the lower wedge 200 further includes a top and a bottom, and the top of the lower wedge 200 and the bottom of the lower wedge 200 are positioned in the sliding direction of the upper wedge 100. The upper wedge 100 further includes a top and a bottom, and the top of the upper wedge 100 and the bottom of the upper wedge 100 are located in the sliding direction of the upper wedge 100. The bottom of the upper wedge 100 is opposite to the top of the lower wedge 200, and an upper stopper 150 is fixed to the bottom of the upper wedge 100, and the upper stopper 150 can be abutted to the top of the lower wedge 200. A lower stopper 230 is fixed to the bottom of the lower wedge 200, and the lower stopper 230 can abut against the top of the upper wedge 100.
The upper stopper 150 and the lower stopper 230 are both used to limit the sliding displacement of the upper wedge 100. In the present embodiment, when the upper stopper 150 abuts against the top of the lower wedge 200, the lower stopper 230 abuts against the top of the upper wedge 100. In other alternative embodiments, the steel wedge block fixture may be provided with only the upper stop block 150 or the lower stop block 230.
In addition, the lower wedge 200 further includes a lower wedge side 250, the lower wedge side 250 being connected to the lower wedge compression surface 210 and the lower wedge sliding surface 220, the lower wedge side 250 being provided with a lower limit post 240. The upper wedge 100 further includes an upper wedge side 170, the upper wedge side 170 being connected to the upper wedge compression face 110 and the upper wedge sliding face 120, the upper wedge side 170 being provided with an upper limit post 160.
When the steel wedge fixing device is inserted into the groove of the loose end of the steel support 500 to be fixed, the lower limit post 240 and the upper limit post 160 can be matched with the baffle structure in the groove, so that the lower wedge block 200 and the upper wedge block 100 cannot slide from the groove of the loose end of the steel support 500 to be fixed.
In other alternative embodiments, the steel wedge securing device may be provided with only the lower limit post 240 or the upper limit post 160.
As shown in fig. 5, the steel wedge fixing device is installed in a groove of the loose end of the steel support 500, wherein the upper wedge sliding surface 120 and the lower wedge sliding surface 220 are engaged with each other, the upper wedge pressing surface 110 of the upper wedge 100 and the lower wedge pressing surface 210 of the lower wedge 200 are pressed against opposite inner walls of the groove of the loose end of the steel support 500 to be fixed, respectively, and the upper wedge 100 and the lower wedge 200 provide an axial supporting force to the steel support 500, thereby functioning to fix the steel support 500. When the maximum distance between the upper wedge pressing surface 110 and the lower wedge pressing surface 210 of the steel wedge fixing device is smaller than the length of the groove of the loose end of the steel support 500 in the axial direction of the steel support 500, a proper amount of rectangular steel wedges may be inserted outside the upper wedge pressing surface 110 and the lower wedge pressing surface 210 to ensure that the steel support 500 can be fixed by the steel wedge fixing device.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (6)

1. A steel wedge block fixing device for fixing a steel support inserted into a groove of a loose end of the steel support to be fixed, characterized in that the steel wedge block fixing device comprises:
the upper wedge block comprises an upper wedge block compression surface and an upper wedge block sliding surface, the upper wedge block compression surface is opposite to the upper wedge block sliding surface, and the upper wedge block compression surface is used for being compressed on one inner wall of a groove at the movable end of the steel support to be fixed;
the lower wedge comprises a lower wedge pressing surface and a lower wedge sliding surface, the lower wedge pressing surface and the lower wedge sliding surface are deviated, the lower wedge pressing surface is used for being pressed on the other inner wall of the groove at the movable end of the steel support to be fixed, the upper wedge sliding surface and the lower wedge sliding surface can be mutually attached, the upper wedge can slide along the extending direction of the lower wedge sliding surface, and the distance between the upper wedge pressing surface and the lower wedge pressing surface is changed along with the sliding of the upper wedge;
the upper wedge block can be fixed on the lower wedge block through the connecting component;
the connecting assembly comprises a connecting rod and a nut, a connecting hole is formed in the upper wedge block, one end of the connecting rod is fixed relative to the lower wedge block, an external thread is arranged at the other end of the connecting rod, and the connecting rod penetrates through the connecting hole and is connected with the nut in a threaded manner;
the connecting rod is positioned at the outer side of the sliding surface of the lower wedge block;
the lower wedge block further comprises a lower wedge block side surface, the lower wedge block side surface is connected with the lower wedge block compression surface and the lower wedge block sliding surface, and a lower limit column is arranged on the lower wedge block side surface;
and/or, the upper wedge block further comprises an upper wedge block side surface, the upper wedge block side surface is connected with the upper wedge block compression surface and the upper wedge block sliding surface, and an upper limit column is arranged on the upper wedge block side surface;
the connecting rod is parallel to the upper wedge block compression surface, and the projection of the axis of the connecting rod on the lower wedge block sliding surface is parallel to the sliding direction of the upper wedge block;
the projection of the axis of the connecting hole on the upper wedge sliding surface is positioned in the middle of the upper wedge sliding surface;
the connecting hole passes through the sliding surface of the upper wedge block and forms a groove.
2. The steel wedge fixing device according to claim 1, wherein the connecting hole is a slotted hole, the axial direction of the connecting rod is parallel to the axial direction of the connecting hole, and the connecting rod can slide along the upper wedge block to move relative to the connecting hole along the extending direction of the long diameter of the connecting hole.
3. A steel wedge fixing apparatus according to claim 2, wherein said upper wedge pressing surface and said lower wedge pressing surface are parallel.
4. A steel wedge fixing apparatus according to claim 2 wherein the projection of the axis of the connecting rod onto the lower wedge sliding surface is located at a position intermediate the lower wedge sliding surface.
5. A steel wedge fixing apparatus according to claim 2, wherein a guide portion is fixed to the sliding surface of the lower wedge, one end of the connecting rod is fixed to the guide portion, and the guide portion can be matched with the groove.
6. The steel cleat retainer of claim 1, wherein the lower cleat further includes a top and a bottom, the top of the lower cleat and the bottom of the lower cleat being in the sliding direction of the upper cleat;
the upper wedge block further comprises a top and a bottom, and the top of the upper wedge block and the bottom of the upper wedge block are positioned in the sliding direction of the upper wedge block;
the bottom of the upper wedge block is opposite to the top of the lower wedge block, an upper limiting block is fixed at the bottom of the upper wedge block, and the upper limiting block can be abutted to the top of the lower wedge block;
and/or the bottom of the lower wedge block is fixed with a lower limiting block, and the lower limiting block can be abutted to the top of the upper wedge block.
CN201810331351.9A 2018-04-13 2018-04-13 Steel wedge block fixing device Active CN108360533B (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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CN108360533B true CN108360533B (en) 2023-10-31

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108824453A (en) * 2018-09-04 2018-11-16 上海公路桥梁(集团)有限公司 Interior pin ratchet self-locking device and the bracing members comprising it
CN108978678A (en) * 2018-09-04 2018-12-11 上海公路桥梁(集团)有限公司 Capping type ratchet self-locking device and bracing members comprising it
CN111042180A (en) * 2019-12-04 2020-04-21 中国五冶集团有限公司 Steel wedge for mounting steel column
CN115059088A (en) * 2022-06-14 2022-09-16 南京工业大学 Foundation pit steel supporting device with adjustable distance and measurable force

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JP3029919U (en) * 1996-04-09 1996-10-18 株式会社京都スペーサー Strut member
CN2530124Y (en) * 2002-03-07 2003-01-08 梁克宾 Regulatable sliding bearing
CN202117062U (en) * 2011-06-14 2012-01-18 上海建科建设监理咨询有限公司 Wedge for steel support
CN203843587U (en) * 2014-05-28 2014-09-24 湖南科美达电气股份有限公司 Flat gasket device capable of being dynamically adjusted
CN204803896U (en) * 2015-07-08 2015-11-25 中建筑港集团有限公司 Adjusting device that deep basal pit steel shotcrete prestressing force was applyed
CN204940109U (en) * 2015-09-22 2016-01-06 华东 A kind of anchor device of bridge expanssion joint
CN105544994A (en) * 2016-01-22 2016-05-04 中交第二航务工程局有限公司 Unloading device used for steel structure support and unloading method thereof
CN208379598U (en) * 2018-04-13 2019-01-15 上海公路桥梁(集团)有限公司 Gad block fixes device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3029919U (en) * 1996-04-09 1996-10-18 株式会社京都スペーサー Strut member
CN2530124Y (en) * 2002-03-07 2003-01-08 梁克宾 Regulatable sliding bearing
CN202117062U (en) * 2011-06-14 2012-01-18 上海建科建设监理咨询有限公司 Wedge for steel support
CN203843587U (en) * 2014-05-28 2014-09-24 湖南科美达电气股份有限公司 Flat gasket device capable of being dynamically adjusted
CN204803896U (en) * 2015-07-08 2015-11-25 中建筑港集团有限公司 Adjusting device that deep basal pit steel shotcrete prestressing force was applyed
CN204940109U (en) * 2015-09-22 2016-01-06 华东 A kind of anchor device of bridge expanssion joint
CN105544994A (en) * 2016-01-22 2016-05-04 中交第二航务工程局有限公司 Unloading device used for steel structure support and unloading method thereof
CN208379598U (en) * 2018-04-13 2019-01-15 上海公路桥梁(集团)有限公司 Gad block fixes device

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