CN108943380B - Locking device and prestressed reinforcement tensioning device - Google Patents
Locking device and prestressed reinforcement tensioning device Download PDFInfo
- Publication number
- CN108943380B CN108943380B CN201811140373.3A CN201811140373A CN108943380B CN 108943380 B CN108943380 B CN 108943380B CN 201811140373 A CN201811140373 A CN 201811140373A CN 108943380 B CN108943380 B CN 108943380B
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- tension
- main body
- piece
- inclined block
- tension rod
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 10
- 230000000670 limiting effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 30
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 21
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to the field of prestress tensioning equipment, in particular to a locking device and a prestress steel bar tensioning device. A locking device comprises a main body, a tension rod and a locking mechanism. The tension rod penetrates through the main body, two ends of the tension rod, which are positioned outside the main body, are respectively connected with the prestressed reinforcement and the tension mechanism, and the tension mechanism is used for driving the tension rod to move along a preset tension direction. The locking mechanism is arranged in the main body and is matched with the tension rod in the main body so as to limit the tension rod to move in the direction opposite to the preset tension direction. The locking device can realize the function of automatic locking in the production process, thereby reducing the operation procedures, improving the efficiency and simultaneously reducing the labor intensity of staff.
Description
Technical Field
The invention relates to the field of prestress tensioning equipment, in particular to a locking device and a prestress steel bar tensioning device.
Background
At present, when a prestressed reinforcement is tensioned and locked, the pre-tensioning method prestressed concrete track slab for producing the ballastless track of the high-speed railway has the following problems:
the locking operation is troublesome, auxiliary equipment is many, and the structure is complicated, and intensity of labour is big, and work efficiency is low, and the pulling force of each prestressing steel hardly guarantees to satisfy the problem of standard requirement.
Disclosure of Invention
The invention aims to provide a locking device which can realize the function of automatic locking in the production process, thereby reducing the operation procedures, improving the efficiency and simultaneously reducing the labor intensity of staff.
Embodiments of the present invention are implemented as follows:
a locking device comprises a main body, a tension rod and a locking mechanism;
the tension rod penetrates through the main body, two ends of the tension rod, which are positioned outside the main body, are respectively connected with the prestressed reinforcement and the tension mechanism, and the tension mechanism is used for driving the tension rod to move along a preset tension direction;
the locking mechanism is arranged in the main body and is matched with the tension rod in the main body so as to limit the tension rod to move in the direction opposite to the preset tension direction.
In one embodiment of the invention:
the locking mechanism comprises a driving piece and a driven piece;
the driving piece is matched with the driven piece, the driving piece and the tension rod synchronously move, and the driven piece is used for limiting the driving piece to move in the direction opposite to the preset tension direction.
In one embodiment of the invention:
the driving part comprises a main inclined block sleeved on the tension rod, and the driven part comprises a transition part, a secondary inclined block and a first elastic part;
the main oblique block, the transition piece and the auxiliary oblique block are matched in sequence; the two ends of the first elastic piece are respectively connected with the main body and the auxiliary inclined block, so that the auxiliary inclined block has a trend of moving towards a preset stretching direction, and the matching state among the main inclined block, the transition piece and the auxiliary inclined block is kept.
In one embodiment of the invention:
the main oblique block, the transition piece and the auxiliary oblique block are in clearance fit with the main body.
In one embodiment of the invention:
the main oblique block is in clearance fit with the tension rod.
In one embodiment of the invention:
inclined planes matched with two parallel side surfaces of the transition piece are respectively arranged on the main inclined block and the auxiliary inclined block;
the inclined planes on the main inclined block and the auxiliary inclined block are parallel to each other.
In one embodiment of the invention:
the driven piece also comprises a push rod, one end of the push rod is connected with the auxiliary inclined block, and the other end of the push rod extends out of the main body.
In one embodiment of the invention:
the tension rod is sleeved with a second elastic piece, and two ends of the second elastic piece are respectively abutted against the main body and the driving piece, so that the driving piece has a trend of moving towards a preset tension direction.
In one embodiment of the invention:
the driving part and the thrust ball bearing are kept in an abutting state under the elastic action of the second elastic part.
A prestressed reinforcement tensioning device comprises a tensioning mechanism and the locking device.
The technical scheme of the invention has at least the following beneficial effects:
the locking device provided by the invention can realize the function of automatic locking in the production process, so that the operation procedures can be reduced, the efficiency is improved, and the labor intensity of staff is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a locking device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a locking mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing a state at the beginning of the initial stretching process according to the embodiment of the present invention;
FIG. 4 is a schematic diagram showing the completion of the initial stretching process according to the embodiment of the present invention;
FIG. 5 is a schematic diagram showing the start of the final stretching process according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of the final tensioning process according to an embodiment of the present invention;
FIG. 7 is a schematic diagram showing a state at the beginning of the sheet feeding process according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a state when the sheet feeding process is completed in the embodiment of the present invention.
Icon: 200-locking device; 210-a body; 220-pulling rods; 230-a locking mechanism; 231-a driving member; 232-a follower; 2311-a main oblique block; 2321—a transition piece; 2322-a secondary oblique block; 2323-a first elastic member; 2324-ejector pins; 241-a second elastic member; 242-thrust ball bearings; 243-boss steps.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In describing embodiments of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "inner", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
Referring to fig. 1, fig. 1 shows a specific structure of a locking device 200 provided in an embodiment, and it should be noted that the locking device 200 may be applied to a prestressed reinforcement tensioning device for producing a pretensioned prestressed concrete track slab of a ballastless track of a high-speed railway.
The tensioning mechanism of the prestressed reinforcement tensioning device can automatically lock the tensioning rod 220 through the locking device 200 in the tensioning process of the prestressed reinforcement, so that the tensioning position of the tensioning rod 220 can be maintained, and the tensioning action of the prestressed reinforcement is completed.
As can be seen in fig. 1, the locking device 200 includes a body 210, a tension rod 220, and a locking mechanism 230.
The tension rod 220 penetrates through the main body 210, so that the middle portion of the tension rod 220 is relatively located in the main body 210, two ends of the tension rod 220 are relatively located outside the main body 210, and two ends located outside the main body 210 are respectively connected with the prestressed reinforcement and the tension mechanism. In addition, the tension rod 220 positioned in the main body 210 is engaged with the locking mechanism 230 provided in the main body 210, so that the tension rod 220 is restricted from moving in a direction opposite to the preset tension direction by the locking mechanism 230 during the movement of the tension rod 220 in the preset tension direction (the direction indicated by the arrow in fig. 1) by the tension mechanism. Therefore, in the tensioning process, the tensioning rod 220 is automatically locked, so that the operation procedures are reduced, the efficiency is improved, and the labor intensity of workers is reduced.
It should be noted that, in order to facilitate connection of the tension rod 220 with the prestressed reinforcement and the tension mechanism, both ends of the tension rod 220 are respectively provided with an internal thread and an external hexagonal structure, the internal thread structure is used for being connected with the prestressing force, and the external hexagonal structure is used for being connected with the tension mechanism and the tension releasing mechanism.
In addition, in the course of manufacturing the locking device 200, in order to stabilize the internal environment of the body 210 of the locking device 200, the body 210 may be provided in a sealed case structure. When the main body 210 is made into a box structure, since the opening is provided in the main body 210 when the locking structure and the tension rod 220 are installed, it is necessary to seal the opening and the connection between the tension rod 220 and the main body 210 by the cover plate and the seal ring structure, thereby ensuring that the inside is in a closed state. Second, a lubricant may be added to the main body 210 to facilitate the mating movement of the locking mechanism 230 and the tension rod 220 within the main body 210.
Further, the locking mechanism 230 is used to limit the movement of the tension rod 220 in a direction opposite to the preset tension direction, so as to automatically lock the tension rod 220, and in this embodiment, the locking mechanism 230 may include a driving member 231 and a driven member 232. Wherein the driving member 231 is engaged with the driven member 232, and the driving member 231 moves synchronously with the tension rod 220, and the driven member 232 is used for limiting the driving member 231 to move in a direction opposite to a preset tension direction.
Specifically, in the present embodiment, referring to fig. 1 and 2, the driving member 231 may include a main inclined block 2311 sleeved on the tension rod 220; the follower 232 may include a transition piece 2321, a secondary swash block 2322, and a first elastic piece 2323. And main diagonal segment 2311, transition piece 2321 and secondary diagonal segment 2322 cooperate sequentially. In the process of mutual matching, the main inclined block 2311, the transition piece 2321 and the auxiliary inclined block 2322 are matched between inclined planes arranged on the main inclined block 2311, the transition piece 2321 and the auxiliary inclined block 2322, so that when the main inclined block 2311 moves synchronously with the tension rod 220 along a preset tension direction, the main inclined block 2311 can form a locking effect on the movement of the main inclined block 2311 through the mutual matching between the inclined planes.
It should be noted that, in this embodiment, the inclined plane between the main inclined block 2311, the transition piece 2321 and the auxiliary inclined block 2322 is matched to lock the tension rod 220, in this process, the setting of the inclined plane angle can be set according to the actual requirement, that is, the angle of the inclined plane can meet the requirement that the main inclined block 2311, the transition piece 2321 and the auxiliary inclined block 2322 have a certain roughness outside the movable range in the main body 210, so that the interlocking can be achieved. In this embodiment, in order to make the movement direction of the auxiliary oblique block 2322 coincide with the preset stretching movement direction of the stretching rod 220, oblique planes for matching with two parallel side surfaces of the transition piece 2321 are respectively provided on the main oblique block 2311 and the auxiliary oblique block 2322; the inclined surfaces on main inclined block 2311 and sub inclined block 2322 are parallel to each other. And to facilitate lubrication of the locking mechanism 230, the main diagonal segment 2311 is in clearance fit with the tension rod 220, and the main diagonal segment 2311, the transition piece 2321 and the secondary diagonal segment 2322 are in clearance fit with the main body 210.
In the process of playing a locking role, by connecting or abutting the two ends of the first elastic member 2323 with the main body 210 and the auxiliary oblique block 2322 respectively, the auxiliary oblique block 2322 can have a trend of moving towards a preset tensioning direction, and the inclined planes among the main oblique block 2311, the transition member 2321 and the auxiliary oblique block 2322 can be kept in a matched state, so that when the main oblique block 2311 and the tensioning rod 220 synchronously move, the auxiliary oblique block 2322 can move under the action of the first elastic member 2323 so as to keep the locking role of the main oblique block 2311, and the tensioning position of the tensioning rod 220 can be kept so as to complete the tensioning role of the prestressed reinforcement. The first resilient member 2323 is preferably a spring with a guide rod disposed therebetween, one end of the guide rod being secured to the main body 210 and the other end being slidable in a bore (not shown) in the secondary swash block 2322.
Further, in order to enable the main inclined block 2311 to move synchronously with the tension rod 220, the main inclined block 2311 may be relatively fixed with the tension rod 220, but in this embodiment, in order to facilitate lubrication of the mating surface between the main inclined block 2311 and the tension rod 220, the main inclined block 2311 is sleeved on the tension rod 220, and a gap exists between the tension rod 220 and the main inclined block 2311, thereby, a second elastic member 241 is sleeved on the tension rod 220, and two ends of the second elastic member 241 are respectively abutted against the main body 210 and the driving member 231, so that the driving member 231 has a tendency to move in a preset tension direction, and thus, in the process of moving the tension rod 220, the main inclined block 2311 can move synchronously with the tension rod 220 through the action of the second elastic member 241.
Further, since the tensioning mechanism drives the tensioning rod 220 to move along the preset tensioning direction, the tensioning rod 220 is further driven to rotate, so that the main inclined block 2311 can be in running fit with the tensioning rod 220 and the movable distance of the main inclined block 2311 on the tensioning rod 220 is limited, a thrust ball bearing 242 is arranged on one side of the tensioning rod 220 away from the second elastic piece 241, the thrust ball bearing 242 abuts against a boss step 243 on the tensioning rod 220, and the main inclined block 2311 and the thrust ball bearing 242 can be kept in contact under the elastic action of the second elastic piece 241, so that the requirement of synchronous movement of the main inclined block 2311 and the tensioning rod 220 can be met in the process that the tensioning mechanism drives the tensioning rod 220 to move.
Further, in the present embodiment, the follower 232 can function to restrict the movement of the driving member 231 in the opposite direction to the preset stretching direction. In order to enable the locking device 200 to be reused, that is, the relative positions of the driving member 231, the driven member 232 and the tension rod 220 in the main body 210 can return to the initial position before tensioning, the locking device 200 further comprises a push rod 2324, one end of the push rod 2324 is fixedly connected with the auxiliary inclined block 2322, the other end of the push rod 2324 extends out of the main body 210, the auxiliary inclined block 2322 can be driven to move in the main body 210 through the push rod 2324, and meanwhile the locking device 200 in a locking state can be unlocked, that is, the auxiliary inclined block 2322 is driven to move in a direction opposite to a preset tensioning direction, so that the locking effect can be eliminated.
In the tensioning mechanism of the prestressed reinforcement tensioning device, the movement process of the locking device 200 is as follows in the tensioning process of the prestressed reinforcement:
in the tensioning process, the external actuating mechanism comprises a primary tensioning mechanism, a final tensioning mechanism and a releasing mechanism. In addition, referring to the direction marks in fig. 4-8, the left-right direction is hereinafter referred to as a mark disposed along a predetermined stretching direction, and the up-down direction is referred to as a mark disposed along a direction perpendicular to the predetermined stretching direction.
Primary stretching process (stretching process):
referring to fig. 3 and 4, the locking device 200 is fixed on a track slab mold, and the a end of the tension rod 220 (the end of the tension rod 220 provided with the internal thread structure) is opposite to the external thread of the end of the prestressed reinforcement.
At the beginning of the initial tensioning process, the initial tensioning mechanism moves towards the direction close to the end B of the tensioning rod 220 (the end of the tensioning rod 220 provided with the external hexagonal structure), and the ejector rod 2324 is pushed to enable the auxiliary oblique block 2322 to move leftwards and close to the left end of the main body 210, so that the locking effect of the locking mechanism 230 is eliminated, and the tensioning rod 220 is free from limiting effect and can move along the direction opposite to the preset tensioning direction.
Meanwhile, the primary tensioning mechanism is connected with the outer hexagonal structure of the end B of the tensioning rod 220, so that the tensioning rod 220 rotates under the rotation action of the primary tensioning mechanism while moving leftwards, the end A of the tensioning rod 220 is connected with the external threads of the end part of the prestressed reinforcement, the primary tensioning mechanism continues to rotate, and after the tensile force of the prestressed reinforcement reaches the requirement, the primary tensioning mechanism stops rotating, and the primary tensioning process is completed.
After the initial tensioning procedure is completed, the action of the ejector rod 2324 disappears, and the first elastic piece 2323 enables the auxiliary oblique block 2322 to have a trend of moving along the preset tensioning direction, so that the locking action of the auxiliary oblique block 2322 is recovered. Meanwhile, the main inclined block 2311, the transition block and the auxiliary inclined block 2322 realize self-locking so as to achieve the purpose of automatic locking.
Final tensioning procedure (pulling procedure):
referring to fig. 5 and 6, the end B of the tension rod 220 is connected to a final tension mechanism, when the final tension mechanism pulls the tension rod 220 rightward, the main inclined block 2311 moves to a side close to the thrust ball bearing 242 and abuts against the thrust ball bearing 242 under the action of the second elastic member 241, and pushes the thrust ball bearing 242 to abut against the boss step 243 of the tension rod 220, so as to eliminate the axial gap. The first elastic member 2323 synchronously pushes the auxiliary oblique block 2322 to move rightwards, synchronously pushes the transition member 2321 to move upwards so as to eliminate the gap between the transition member 2321 and the main oblique block 2311, and when the tensile force of the prestressed reinforcement reaches a specified value, the final tensioning mechanism releases the return, and at the moment, the main oblique block 2311, the transition block and the auxiliary oblique block 2322 realize self-locking so as to achieve the purpose of automatic locking.
The process of the sheet releasing procedure comprises the following steps:
referring to fig. 7 and 8, the stretching mechanism is connected to the outer hexagonal structure of the B end of the stretching rod 220, the stretching mechanism drives the stretching rod 220 to rotate, the stretching rod 220 moves rightward simultaneously, and the second elastic member 241 synchronously abuts against the main inclined block 2311 and the thrust ball bearing 242 to move rightward until the stretching is completed, and the end face of the a end of the stretching rod 220 is lower than the side face of the mold cavity, so as to facilitate the demolding of the workpiece.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A locking device, comprising:
a main body;
the tension rod penetrates through the main body, two ends of the tension rod, which are positioned outside the main body, are respectively connected with the prestressed reinforcement and the tension mechanism, and the tension mechanism is used for driving the tension rod to move along a preset tension direction; and
the locking mechanism is arranged in the main body and is matched with the tension rod in the main body so as to limit the tension rod to move in a direction opposite to the preset tension direction;
the locking mechanism comprises a driving piece and a driven piece;
the driving piece is matched with the driven piece, the driving piece and the tension rod synchronously move, and the driven piece is used for limiting the driving piece to move in a direction opposite to the preset tension direction;
the driving part comprises a main inclined block sleeved on the tension rod, and the driven part comprises a transition part, a secondary inclined block and a first elastic part;
the main inclined block, the transition piece and the auxiliary inclined block are matched in sequence; the two ends of the first elastic piece are respectively connected with the main body and the auxiliary inclined block, so that the auxiliary inclined block has a trend of moving towards the preset stretching direction, and the matching state among the main inclined block, the transition piece and the auxiliary inclined block is kept;
and inclined planes matched with two parallel side surfaces of the transition piece are respectively arranged on the main inclined block and the auxiliary inclined block.
2. The locking device of claim 1, wherein:
the primary swash block, the transition piece and the secondary swash block are in clearance fit with the main body.
3. The locking device of claim 1, wherein:
the main oblique block is in clearance fit with the tension rod.
4. The locking device of claim 1, wherein:
the inclined planes on the main inclined block and the auxiliary inclined block are parallel to each other.
5. The locking device of claim 1, wherein:
the driven piece further comprises a push rod, one end of the push rod is connected with the auxiliary inclined block, and the other end of the push rod extends out of the main body.
6. The locking device of claim 1, wherein:
the tension rod is sleeved with a second elastic piece, and two ends of the second elastic piece are respectively abutted against the main body and the driving piece, so that the driving piece has a tendency of moving towards the preset tension direction.
7. The locking device of claim 6, wherein:
and a thrust ball bearing is arranged on one side of the tension rod, which is far away from the second elastic piece, and the driving piece is kept in an abutting state with the thrust ball bearing under the elastic action of the second elastic piece.
8. The utility model provides a prestressing steel tensioning equipment which characterized in that:
the prestressed reinforcement tensioning device comprises a tensioning mechanism and a locking device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811140373.3A CN108943380B (en) | 2018-09-28 | 2018-09-28 | Locking device and prestressed reinforcement tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811140373.3A CN108943380B (en) | 2018-09-28 | 2018-09-28 | Locking device and prestressed reinforcement tensioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108943380A CN108943380A (en) | 2018-12-07 |
| CN108943380B true CN108943380B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811140373.3A Active CN108943380B (en) | 2018-09-28 | 2018-09-28 | Locking device and prestressed reinforcement tensioning device |
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| CN (1) | CN108943380B (en) |
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| CN203097301U (en) * | 2013-01-15 | 2013-07-31 | 柳州欧维姆机械股份有限公司 | Prestressed tendon tensioning pre-tensioning device |
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| CN108214875A (en) * | 2018-01-23 | 2018-06-29 | 济南毕昇信息科技有限公司 | A kind of track plates automatic production line |
| CN108284511A (en) * | 2018-03-10 | 2018-07-17 | 山东高速轨道设备材料有限公司 | A kind of pre-stress rail plate reinforced bar stretching machine |
| CN209920196U (en) * | 2018-09-28 | 2020-01-10 | 山东豪迈机械制造有限公司 | Locking device and prestressed reinforcement tensioning device |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU94673A1 (en) * | 1950-11-11 | 1951-11-30 | Б.Л. Скляр | Fixture for tension fittings |
| KR20110017320A (en) * | 2009-08-13 | 2011-02-21 | 여백유 | Reinforcing structure of beam |
| CN101967885A (en) * | 2010-09-26 | 2011-02-09 | 北京华泰天成科技发展有限公司 | Prestressed reinforcing steel tensioning equipment |
| CN103009478A (en) * | 2012-12-21 | 2013-04-03 | 中铁九局集团有限公司桥梁分公司 | Tensioning locking and lossless extending device |
| CN203097301U (en) * | 2013-01-15 | 2013-07-31 | 柳州欧维姆机械股份有限公司 | Prestressed tendon tensioning pre-tensioning device |
| CN205466713U (en) * | 2016-02-04 | 2016-08-17 | 秦皇岛老虎重工有限公司 | Ballastless track board prestressing steel stretch -draw locking device |
| CN108214875A (en) * | 2018-01-23 | 2018-06-29 | 济南毕昇信息科技有限公司 | A kind of track plates automatic production line |
| CN108284511A (en) * | 2018-03-10 | 2018-07-17 | 山东高速轨道设备材料有限公司 | A kind of pre-stress rail plate reinforced bar stretching machine |
| CN209920196U (en) * | 2018-09-28 | 2020-01-10 | 山东豪迈机械制造有限公司 | Locking device and prestressed reinforcement tensioning device |
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| CN108943380A (en) | 2018-12-07 |
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