CN109025314B - Pretensioning machine - Google Patents
Pretensioning machine Download PDFInfo
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- CN109025314B CN109025314B CN201810845243.3A CN201810845243A CN109025314B CN 109025314 B CN109025314 B CN 109025314B CN 201810845243 A CN201810845243 A CN 201810845243A CN 109025314 B CN109025314 B CN 109025314B
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- steel bar
- stretching device
- linear
- fixing piece
- underframe
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
Abstract
The invention discloses a pre-tensioning machine which comprises an underframe, a linear stretching device and a steel bar fixing piece, wherein an end seat anchorage device is arranged at the first end of the underframe, a fixing seat is arranged at the second end of the underframe, the linear stretching device and the steel bar fixing piece are respectively positioned between the first end and the second end of the underframe, one end of the linear stretching device is connected with the fixing seat, the other end of the linear stretching device is connected with the steel bar fixing piece, a guide mechanism for guiding the movement of the steel bar fixing piece is further arranged on the upper surface of the underframe, and the moving direction of the steel bar fixing piece is consistent with the stretching direction. The device is applied, one end of a steel bar is fixed through an end seat anchorage device, the other end of the steel bar is fixed through a steel bar fixing piece, a linear stretching device drives the steel bar fixing piece to perform pre-stretching, a guide mechanism on a chassis guides the movement of the steel bar fixing piece, the linear stretching device is prevented from shifting when the steel bar is lifted, the pre-stretching force of the steel bar is ensured to be the same, the steel bar stretching efficiency is improved, and the device is simple in structure and does not need to be frequently provided with a hanging balance weight.
Description
Technical Field
The invention relates to the field of tensioning equipment, in particular to a pre-tensioning machine.
Background
The prestressed reinforcement needs to be subjected to pre-tensioning operation before the integral tensioning, and the aim is to ensure that the tensioning force of each reinforcement is the same as far as possible when the tensioning of the reinforcement is started, so that the phenomenon that the tensioning of individual reinforcements is not in place to influence the performance of the prestressed laminated slab is avoided.
According to the requirements of the integral pretensioning process, the pretensioning machine can meet the basic requirements of convenience, rapidness, flexible operation and the like. The prior art has the following defects: heavy structure, need rely on counter weight work, complex operation, equipment transition frequently hangs the counter weight, the clamping reliability is poor and remove the problem of transporting work inefficiency.
Disclosure of Invention
In view of this, the present invention provides a pretensioning machine to solve the problems in the prior art that a tensioning device is heavy in structure, needs to work by a counterweight, and has low transfer efficiency.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a pretension machine, includes chassis, sharp stretching device and reinforcing bar mounting, the first end of chassis is equipped with the end seat ground tackle, and the second end is equipped with the fixing base, sharp stretching device with the reinforcing bar mounting is located respectively between the first end of chassis and the second end, sharp stretching device's one end with the fixing base links to each other, the other end with the reinforcing bar mounting links to each other, the upper surface of chassis still be equipped with be used for doing the guiding mechanism that the removal of reinforcing bar mounting led carries out, the moving direction of reinforcing bar mounting with the tensile direction of sharp stretching device is unanimous.
Preferably, the number of the guide mechanisms is multiple, the multiple guide mechanisms are arranged on the base frame in parallel, and the linear stretching device can slide on the fixed seat so as to be capable of being alternately matched with the multiple guide mechanisms.
Preferably, the fixing seat is provided with a sliding groove perpendicular to the stretching direction of the linear stretching device, and the linear stretching device is provided with a sliding block matched with the sliding groove.
Preferably, the chassis is fixedly connected with a guide plate in a detachable manner, the guide mechanism is arranged on the guide plate, and the guide mechanism is specifically a guide groove/guide block.
Preferably, the reinforcing bar mounting specifically is the bow template, the one end of bow template with straight line stretching device detachable fixed connection, the other end of bow template is equipped with and is used for carrying out the fixed slot fixed to the reinforcing bar, the bow template warp the reinforcing bar is fixed to the reinforcing bar with reinforcing bar fixed anchorage.
Preferably, the number of the linear stretching devices is multiple, and the multiple linear stretching devices slide on the fixed seat through the sliding grooves.
Preferably, the linear stretching device is embodied as a cylinder.
Preferably, a hydraulic system connected with the linear stretching device is arranged on the base.
The invention provides a pre-tensioning machine which comprises an underframe, a linear stretching device and a steel bar fixing piece, wherein an end seat anchorage device is arranged at the first end of the underframe, a fixing seat is arranged at the second end of the underframe, the linear stretching device and the steel bar fixing piece are respectively positioned between the first end and the second end of the underframe, one end of the linear stretching device is connected with the fixing seat, the other end of the linear stretching device is connected with the steel bar fixing piece, a guide mechanism for guiding the movement of the steel bar fixing piece is further arranged on the upper surface of the underframe, and the moving direction of the steel bar fixing piece is consistent with the.
By applying the pre-tensioning machine provided by the invention, one end of the steel bar is fixed by the end seat anchorage device, the other end of the steel bar is fixed by the steel bar fixing piece, the linear stretching device drives the steel bar fixing piece to perform pre-tensioning, the guide mechanism on the underframe guides the movement of the steel bar fixing piece, the position deviation of the linear stretching device when the steel bar is lifted is prevented, the same pre-tensioning force of the steel bar is ensured, the steel bar tensioning efficiency is improved, and the device is simple in structure and does not need to be frequently provided with a suspension counter weight.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic front view of a pre-tensioning machine according to an embodiment of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a side view of the structure of FIG. 1;
fig. 4 is a schematic three-dimensional structure diagram of a pre-tensioning machine according to an embodiment of the present invention.
The drawings are numbered as follows:
end seat anchorage 1, chassis 2, reinforcing bar fixing anchorage 3, linear stretching device 4, spout 5, hydraulic system 6, bow-shaped board 7.
Detailed Description
The embodiment of the invention discloses a pretensioning machine, which aims to solve the problems that a tensioning device in the prior art is heavy in structure, needs to work by a balance weight, is low in transferring working efficiency and the like.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, fig. 1 is a schematic front view of a pre-tensioning machine according to an embodiment of the present invention; FIG. 2 is a schematic top view of the structure of FIG. 1; FIG. 3 is a side view of the structure of FIG. 1; fig. 4 is a schematic three-dimensional structure diagram of a pre-tensioning machine according to an embodiment of the present invention.
In a specific embodiment, the pretensioning machine provided by the invention comprises an underframe 2, a linear stretching device 4 and a reinforcing steel bar fixing piece, wherein an end seat anchorage device 1 is arranged at the first end of the underframe 2, a fixing seat is arranged at the second end of the underframe, the linear stretching device 4 and the reinforcing steel bar fixing piece are respectively positioned between the first end and the second end of the underframe 2, one end of the linear stretching device 4 is connected with the fixing seat, the other end of the linear stretching device 4 is connected with the reinforcing steel bar fixing piece, a guide mechanism for guiding the movement of the reinforcing steel bar fixing piece is further arranged on the upper surface of the underframe 2, and the movement direction of the reinforcing steel bar fixing piece is consistent with the.
Wherein, chassis 2's one end is equipped with the mould platform, end seat ground tackle 1 and mould platform are fixed the one end of reinforcing bar, prior art is referred to its specific structure and connected mode, no longer give unnecessary details here, the other end and the reinforcing bar mounting of reinforcing bar are connected, the two accessible joint or other modes are realized fixedly, reinforcing bar mounting and 4 detachable fixed connection of sharp stretching device, if through threaded connection, the automatic operation of sharp stretching device 4 preferred power spare in order to realize the pretensioning machine, sharp stretching device 4 can specifically be the pneumatic cylinder. The linear stretching device 4, the reinforcing steel bars and the end seat anchorage device 1 are arranged on the same straight line to ensure the pretensioning force of the reinforcing steel bars, meanwhile, in order to guide the pretensioning movement of the reinforcing steel bars, a guide mechanism is arranged on the base frame 2, the arrangement direction of the guide mechanism is consistent with the moving direction of the reinforcing steel bar fixing piece, preferably, the linear stretching device 4 is an oil cylinder or an air cylinder, and a hydraulic system 6 connected with the oil cylinder/the air cylinder can be correspondingly arranged on the base frame 2 so as to realize the forward movement or the backward movement of the linear stretching device 4, monitor the pressure of the system and feed back the tensioning force in real time. From this setting, realize that the pretension power of each reinforcing bar is the same through sharp stretching device 4 to guarantee that the reinforcing bar when the tensioning operation, the initial state tensioning force of each reinforcing bar is the same, avoid appearing that individual reinforcing bar stretch-draw does not in place, influence prestressed laminated slab's performance.
By applying the pre-tensioning machine provided by the invention, one end of a steel bar is fixed by the end seat anchorage device 1, the other end of the steel bar is fixed by the steel bar fixing piece, the linear stretching device 4 drives the steel bar fixing piece to perform pre-tensioning, the guide mechanism on the underframe 2 guides the movement of the steel bar fixing piece, the position deviation of the linear stretching device 4 when the steel bar is lifted and pulled is prevented, the same pre-tensioning force of the steel bar is ensured, the steel bar tensioning efficiency is improved, and the device is simple in structure and does not need to be frequently provided with a suspension counter weight.
Correspondingly, the bottom of the steel bar fixing piece is provided with a guide block/guide groove matched with the guide block/guide groove, so that the steel bar fixing piece can slide along the preset steel bar stretching direction.
Specifically, the number of guiding mechanism is a plurality of, and a plurality of guiding mechanism parallel arrangement on chassis 2, and linear stretching device 4 can slide on the fixing base in order to cooperate in turn with a plurality of guiding mechanism. When the pretension machine needs to pretension the steel bars at a plurality of different positions, the linear stretching device 4 can be pushed and pulled to the corresponding position of the steel bar, the linear stretching device 4 and the guide mechanism are positioned and installed, the steel bar fixing piece and the steel bar are installed and fastened, the linear stretching device 4 can be moved to the position of the guide mechanism corresponding to the corresponding steel bar as required, correspondingly, the sliding connection of the linear stretching device 4 and the fixing seat can be realized through the matching of gears and chains and other forms, as long as the same technical effect can be achieved, and the specific implementation mode is not limited.
Furthermore, the fixed seat is provided with a sliding groove 5 which is perpendicular to the stretching direction of the linear stretching device 4, and the linear stretching device 4 is provided with a sliding block which is matched with the sliding groove 5. From this setting, linear stretching device 4 can remove on spout 5, when the pretension machine need carry out pretension to the reinforcing bar of a plurality of different positions simultaneously, can select rather than adjacent linear stretching device 4 according to the position of reinforcing bar, shorten the man-hour of installation linear stretching device 4, when using, can lift up the reinforcing bar mounting earlier from chassis 2 then promote linear stretching device 4 and slide to the position realization of reinforcing bar to the position of reinforcing bar along spout 5.
Further, a guide plate is arranged on the bottom frame 2, and the guide plate is detachably and fixedly connected with the bottom frame 2, for example, fixed through threads. The guide mechanism is arranged on the guide plate, the guide mechanism can be specifically a guide groove or a guide block, the guide block or the guide groove is correspondingly arranged on the reinforcing steel bar fixing piece so as to realize the matching of the guide mechanism and the guide block, in order to facilitate the arrangement of the guide mechanism, the guide mechanism can be firstly arranged on the guide plate, the guide plate is used for realizing the installation with the underframe 2, the guide mechanism and the underframe can be fixed through screws, in other embodiments, the guide mechanism can also be directly arranged on the underframe 2, and the guide mechanism can be arranged according to actual requirements and is within the protection scope of the invention.
In an embodiment, the reinforcing bar mounting specifically is bow-shaped plate 7, bow-shaped plate 7's one end and 4 detachable fixed connections of sharp stretching device, specifically be bow-shaped plate 7's one end and the piston rod of hydro-cylinder/cylinder are connected, bow-shaped plate 7's the other end is equipped with the fixed slot that is used for fixing the reinforcing bar, and bow-shaped plate 7 fixes the reinforcing bar through fixed slot and reinforcing bar fixed anchorage device 3. Bow-shaped plate 7 is the concave type, bellied both ends respectively with sharp stretching device 4 and steel bar connection, bow-shaped plate 7 is equipped with the fixed slot that is used for placing the reinforcing bar with steel bar connection's one end, and the reinforcing bar passes the fixed slot and is connected with reinforcing bar fixed anchorage device 3 and realize fixing, and reinforcing bar fixed anchorage device 3 is a prior art and no longer gives unnecessary details here.
Further, the number of the linear stretching devices 4 is multiple, and the multiple linear stretching devices 4 slide on the fixed seat through the sliding grooves 5. Therefore, the device can be used for simultaneously pre-tensioning a plurality of steel bars, and the working efficiency is improved.
The device has compact structure, does not influence the operation tensioning of other equipment, and has high clamping speed and high efficiency. And the tension force does not need to be balanced, is determined by the tension force of the oil cylinder, is convenient and quick, can randomly select one or more tension oil cylinders for operation, and is flexible to operate.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A pre-tensioning machine is characterized by comprising an underframe, a linear stretching device and a steel bar fixing piece, wherein an end seat anchorage device is arranged at the first end of the underframe, a fixing seat is arranged at the second end of the underframe, the linear stretching device and the steel bar fixing piece are respectively positioned between the first end and the second end of the underframe, one end of the linear stretching device is connected with the fixing seat, the other end of the linear stretching device is connected with the steel bar fixing piece, a guide mechanism for guiding the movement of the steel bar fixing piece is further arranged on the upper surface of the underframe, and the movement direction of the steel bar fixing piece is consistent with the stretching direction of the linear stretching device; the number of the guide mechanisms is multiple, the guide mechanisms are arranged on the underframe in parallel, the linear stretching device can slide on the fixed seat to be matched with the guide mechanisms alternately, and the linear stretching device and the guide mechanisms are installed in a positioning mode.
2. A pretension machine according to claim 1, characterized in that the fixing base is provided with a sliding groove perpendicular to the stretching direction of the linear stretching device, and the linear stretching device is provided with a sliding block engaged with the sliding groove.
3. A pretensioning machine according to claim 2, characterized in that a guide plate is detachably and fixedly connected to the base frame, and the guide means, in particular a guide groove/guide block, is arranged on the guide plate.
4. The pre-tensioning machine according to claim 3, wherein the steel bar fixing member is a bow-shaped plate, one end of the bow-shaped plate is detachably and fixedly connected with the linear stretching device, the other end of the bow-shaped plate is provided with a fixing groove for fixing the steel bar, and the bow-shaped plate fixes the steel bar through the fixing groove and a steel bar fixing anchor.
5. A pre-tensioning machine according to claim 4, characterized in that the number of the linear tensioning devices is multiple, and the multiple linear tensioning devices slide on the fixed seat through the sliding grooves.
6. Pretensioning machine according to claim 5, characterized in that the linear tensioning device is embodied as a cylinder.
7. A pretension machine according to claim 6, characterized in that a hydraulic system is provided on the base frame for connection with the linear tensioning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845243.3A CN109025314B (en) | 2018-07-27 | 2018-07-27 | Pretensioning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845243.3A CN109025314B (en) | 2018-07-27 | 2018-07-27 | Pretensioning machine |
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| Publication Number | Publication Date |
|---|---|
| CN109025314A CN109025314A (en) | 2018-12-18 |
| CN109025314B true CN109025314B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810845243.3A Active CN109025314B (en) | 2018-07-27 | 2018-07-27 | Pretensioning machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894547A (en) * | 2019-04-03 | 2019-06-18 | 贵州长通集团有限公司 | A kind of prestressing force pull-up structure |
| CN114351604B (en) * | 2022-02-28 | 2023-12-22 | 长沙理工大学 | Device based on in-situ release Zhang Shijia external prestress and bridge reinforcement method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266151Y (en) * | 2008-10-10 | 2009-07-01 | 江阴华新钢缆有限公司 | Deflexion tensile testing machine |
| CN205153558U (en) * | 2015-10-20 | 2016-04-13 | 本溪银龙预应力材料有限公司 | Stretch -draw machine |
| CN106401196A (en) * | 2016-11-03 | 2017-02-15 | 安徽金星预应力工程技术有限公司 | Steel strand tensioning device for pre-stressed anchorage device |
| CN106894343A (en) * | 2017-01-24 | 2017-06-27 | 浙江大学宁波理工学院 | Prestressed high-strength steel strand wires assembled stretching bed seat |
| JP2018109318A (en) * | 2017-01-05 | 2018-07-12 | 株式会社大林組 | Method of disposing tension members and tension member disposing device |
-
2018
- 2018-07-27 CN CN201810845243.3A patent/CN109025314B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266151Y (en) * | 2008-10-10 | 2009-07-01 | 江阴华新钢缆有限公司 | Deflexion tensile testing machine |
| CN205153558U (en) * | 2015-10-20 | 2016-04-13 | 本溪银龙预应力材料有限公司 | Stretch -draw machine |
| CN106401196A (en) * | 2016-11-03 | 2017-02-15 | 安徽金星预应力工程技术有限公司 | Steel strand tensioning device for pre-stressed anchorage device |
| JP2018109318A (en) * | 2017-01-05 | 2018-07-12 | 株式会社大林組 | Method of disposing tension members and tension member disposing device |
| CN106894343A (en) * | 2017-01-24 | 2017-06-27 | 浙江大学宁波理工学院 | Prestressed high-strength steel strand wires assembled stretching bed seat |
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| CN109025314A (en) | 2018-12-18 |
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Address after: 5 / F, office building 2, Zhongmin zhuyou Co., Ltd., No. 10, Zhongshi Road, shaping street, Kaifu District, Changsha City, Hunan Province, 410000 Patentee after: Zhuyou Zhizao Technology Investment Co., Ltd Address before: No. 10, Zhongshi Road, Kaifu District, Changsha City, Hunan Province, 410205 Patentee before: Zhongmin Zhuyou Technology Investment Co.,Ltd. |