CN202467217U - Prestress tension clamp - Google Patents
Prestress tension clamp Download PDFInfo
- Publication number
- CN202467217U CN202467217U CN2012200883468U CN201220088346U CN202467217U CN 202467217 U CN202467217 U CN 202467217U CN 2012200883468 U CN2012200883468 U CN 2012200883468U CN 201220088346 U CN201220088346 U CN 201220088346U CN 202467217 U CN202467217 U CN 202467217U
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- China
- Prior art keywords
- cam
- prestress
- tension clamp
- support
- prestress tension
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Abstract
The utility model provides a prestress tension clamp which is especially suitable for tensioning and locking a hollow self-balancing prestress rod device. The prestress tension clamp comprises a bracket, sliding clamping sheets and a cam, wherein the bracket is a section of straight tube; the cam is movably arranged at one end of the bracket; the wall of the tube is provided with at least two symmetrical toroidal open pores which are communicated with the inner cavity of the bracket; the at least two matched sliding clamping sheets are radially arranged in the toroidal open pores and fixedly provided with sliding pins; and the head parts of the sliding pins are clamped in sliding chutes radially distributed on the cam. One end of the bracket of the tension clamp provided by the utility model is connected with a jack, then a prestress rod is placed into a bayonet, the cam is rotated, and the bayonet can be opened and closed so as to clamp the prestress rod to be subjected to tensioning, so that prestress tensioning and locking are realized. The prestress tension clamp provided by the utility model can be used for widening the prestress application range, is reliable in effect and adapts to different engineering demands.
Description
Technical field
The utility model relates to a kind of prestress tension clamp, especially relates to the prestress tension clamp that a kind of stretch-draw carries the prestressing force rod of prestressing apparatus, is applied in the civil engineering.
Background technology
Prestressing force is by applying branch pre-tensioning system and two kinds of post stretching on prestressed opportunity.Pre-tensioning system is a first prestressed muscle on the prefabricated platform of a concrete component precasting yard, and stretch-draw prestressing force.Cope match-plate pattern pouring concrete again, concrete is fixed discharges prestressing force when reaching predetermined strength and the prestressing force of reinforcing bar is delivered to form prestressed member on the concrete for band.Building construction precast concrete floor in one's early years uses the method prefabricated usually.The characteristics of pre-tensioning system are, operation is simple less, but prestressing force is straight muscle, is not curve, is generally small members, can be rod iron or steel wire.
Post stretching is in concrete component, to reserve earlier prestress pipe, treat concreting and fixed after when reaching predetermined strength, penetrate presstressed reinforcing steel and stretch-draw again, prestressing force is locked on the concrete component power is delivered in the member.Being characterized in can straight line and curve muscle, can steel strand and rod iron, and scope is wide.Large-scale, complicated structure adopts post stretching basically, and shortcoming is that working procedure is many.
The stretch-draw of above-mentioned prestressed structure all is to be fixed on the pedestal end presstressed reinforcing steel (rope) or on the concrete structure; The other end of presstressed reinforcing steel (rope) with a kind of hollow jack in stretch-draw; Presstressed reinforcing steel (rope) is fixed on the odd-job ground tackle of outer end from passing of hollow jack, through oil cylinder stroke presstressed reinforcing steel is stretched, and produces prestressing force and locking; But the fixing relatively difficulty of this stretching mode, and be difficult to move.
Summary of the invention
The utility model provides a kind of prestress tension clamp, and these anchor clamps conveniently carry out prestressed stretch-draw and locking, have widened the prestressing force scope of application, and are reliable for effect, adapts to different requirement of engineering.
A kind of prestress tension clamp comprises support, slip card, cam, and described support is a straight-run of pipe, and described cam is movably installed in an end of support; Tube wall is provided with the hoop perforate of at least two symmetries, and hoop perforate and rack bore communicate with each other; At least two slip cards that match radially are located in the described hoop perforate, are installed with sliding pin on the slip card, and the head of sliding pin snaps in the sliding tray of being located at radial arrangement on the said cam, and sliding pin can be along its slip in sliding tray.
Described slip card one end has the circular arc bayonet socket, and both sides have slide rail, the circular arc bayonet socket of described at least two the slip cards formation round mouth of working in coordination; The chute of the hoop perforate inwall on described slide rail and the described support matches, and makes the slip card do radially folding along described hoop perforate and slides and can not vertically move along support.
Further, the sliding tray on the hoop perforate on the described support, described slip card and the described cam is adaptive each other 2,3 or 4, evenly arranges, makes fixing more firm.
Described cam is placed on the support, and the outside is provided with retainer ring, cam can be rotated along support tube wall hoop but can not vertically move along support.
Further, described sliding tray is a circular arc, and an end starting point of every sliding tray is near the interior bore edges of cam, and terminal point is near the external diameter edge of cam.
Described support can adopt steel pipes such as pipe, square tube or hexagonal pipe.
One end of the support of the prestress tension clamp of the utility model is connected with jack, and the other end is installed the cam rotatable and folding of drive slip card.When the positive inhour of described cam is rotated; Through described one group of sliding pin described one group of positive and negative slip of sliding tray in edge; Drive described one group of slip card and move as relative direction, produce opening and closing movement, the round mouth that the bayonet socket of described one group of slip card is formed can become greatly or diminish; The bayonet socket of slip card can big or small folding and to block the hollow prestressing force of the stretch-draw of wanting excellent, realization prestressed stretch-draw and locking.
The utility model is specially adapted to a kind of stretch-draw of hollow self-balance prestress bar device; This kind hollow self-balance prestress bar device; Or store prestressing force, can carry, move and install in the strange land, be installed in the concrete bodies of newly building, geotechnical body or existing structure body the hole in; Fixing back discharges prestressing force, forms prestressed structure.
The utility model device is easily manufactured, and is reliable for effect, adapts to different requirement of engineering.
Description of drawings
Fig. 1 is the structural representation of the utility model prestress tension clamp.
Fig. 2 is that each parts assembled shaft of the utility model prestress tension clamp is surveyed the expansion sketch map.
The matching relationship axle was surveyed sketch map when Fig. 3 was the utility model prestress tension clamp to a kind of hollow self-balance prestress bar device stretch-draw.
Fig. 4 is the operating principle structure cross-sectional schematic of the utility model prestress tension clamp to the stretch-draw of a kind of hollow self-balance prestress bar device.
A-A cross-sectional schematic when Fig. 5 opens for bayonet socket among Fig. 4.
Fig. 6 is the fashionable A-A cross-sectional schematic of bayonet socket among Fig. 4.
Each parts assembled shaft when one group of quantity of Fig. 7 the utility model device is 3 is surveyed and is launched the embodiment sketch map.
The specific embodiment
Like Fig. 1, shown in Figure 2, a kind of prestress tension clamp is made up of support 1, slip card 2, cam 3, sliding pin 4 and retainer ring 5.
One group of size two same slip card 2 one end has circular arc bayonet socket 20, and both sides have the circular arc bayonet socket 20 of 21, two slip cards 2 of slide rail works in coordination, and closes up the back and forms round mouth; The chute 13 of hoop perforate 10 inwalls on the slide rail 21 of slip card 2 and the support 1 matches; Slip card 2 relatively is installed in one group of hoop perforate 10 of described support 1; And be close to cam 3; Be installed with corresponding one group of two sliding pin 4 on the slip card 2; Have 30, one groups of sliding pins 4 of circular arc sliding tray of one group to snap on the cam 3 on the cam 3 and can slide along it in corresponding one group of circular arc sliding tray 30, slip card 2 can slide and can not vertically move along support along the folding of radially doing of described hoop perforates 10.
Like Fig. 3, Fig. 4, a kind of hollow self-balance prestress bar device comprises hollow stick 101, terminal pore end socket 102, interior support counter-force rod 103, wedge shape intermediate plate 104 and locking bushing nut 105.Hollow stick 101 is put into the bayonet socket 20 of support 1 slip card 2; When cam 3 positive inhours are rotated;, drives two bayonet sockets 2 and move the generation opening and closing movement along described one group of circular arc sliding tray, 30 positive and negative slips through one group of sliding pin 4 as relative direction; The round mouth 20 that described one group of slip card 2 is formed can become big or diminish, and can block hollow stick 101.
Circular arc sliding tray 30, its end starting point of every is near cam endoporus 31 edges.Terminal point is near the external diameter edge of cam, increasing the slip amplitude, and then increases the folding amplitude of bayonet socket 2.Described circular arc sliding tray 30 hoop on described cam 3 is evenly arranged.
Above-mentioned hoop perforate 10, slip card 2, circular arc sliding tray 30 are one group 2 situation, and the quantity of each parts is 2～4 in one group, evenly arrange, as long as adaptive each other.
Ring perforate 10, bayonet socket 2, circular arc sliding tray 30 and the sliding pin 4 that is illustrated in figure 7 as the utility model device is that each parts assembled shaft of one group 3 is surveyed the embodiment sketch map that launches.
During actual production, one group of perforate 10, one group of bayonet socket 2, one group of circular arc sliding tray 30 and one group of sliding pin 4 can be set on demand,
During practical implementation, described support 1 is a straight tube, is shaped as garden pipe, square tube and hexagonal pipe.
Shown in Fig. 4-6; The utility model prestress tension clamp carries out stretch-draw work to hollow self-balance prestress bar device; Jack 9 is fixed with an end of support 1, and hollow self-balance prestress bar device comprises hollow stick 101, terminal pore end socket 102, interior support counter-force rod 103, wedge shape intermediate plate 104 and locking bushing nut 105.Its stretch-draw operating principle is following:
On the platform of the prestress tension clamp of an installation jack 9 and the utility model device; Each parts installation in position with hollow self-balance prestress bar device; Penetrate from described tension clamp at its end that locking bushing nut 105 is housed, end face of support counter-force rod 103 contacts with oil cylinder 91 end faces of jack 9 in it.One group of slip card 2 through the big or small folding of described rotating cam 3 abilities is arranged on the prestress tension clamp of the utility model, when described slip card 2 closes, can block hollow stick 101 through its round mouth 20.
The bayonet socket 20 of slip card 2 blocks the inboard 51 of the locking bushing nut 105 on the hollow stick 1, and bayonet socket face 21 withstands the end face 51 of locking bushing nut 105.During stretch-draw, described tension clamp, locking bushing nut 105 and jack 9 are formed stressed self equilibrium systems.
When starting jack 9 work; Oil cylinder 91 is pressed arrow 100 directions motions, support counter-force rod 3 pressurizeds (edge) in promoting, through terminal pore end socket 102 counter-forces in hollow stick 101; Make the pulling force (direction of arrow 110,120) of hollow stick 101 generations and interior support counter-force rod 103 equivalences.When stretch-draw reached the predetermined pre-tensioning force value, stretch-draw was accomplished, and prestressing force is stored in the hollow self-balance prestress bar device.
Claims (7)
1. prestress tension clamp, it is characterized in that: comprise support (1), slip card (2), cam (3), described support (1) is a straight-run of pipe, and described cam (3) is movably installed in an end of support (1); Tube wall is provided with the hoop perforate (10) of at least two symmetries; At least two slip cards (2) that match radially are located in the described hoop perforate (10), are installed with sliding pin (4) on the slip card (2), and the head of sliding pin (4) snaps in the sliding tray (30) of being located at the last radial arrangement of said cam (3).
2. prestress tension clamp according to claim 1 is characterized in that, described slip card (2) one ends have circular arc bayonet socket (20), and both sides have slide rail (22), and the circular arc bayonet socket (20) of described at least two slip cards (2) is worked in coordination; The chute (13) of hoop perforate (10) inwall on described slide rail (21) and the described support (1) matches.
3. prestress tension clamp according to claim 1; It is characterized in that; Sliding tray (30) on hoop perforate (10) on the described support (1), described slip card (2) and the described cam (3) is adaptive each other 2,3 or 4, evenly arranges.
4. prestress tension clamp according to claim 1 is characterized in that, described cam (3) is enclosed within on the support (1), and the outside is provided with retainer ring (5).
5. according to claim 1 or 3 described prestress tension clamps, it is characterized in that described sliding tray (30) is a circular arc, an end starting point of every sliding tray (30) is near the interior bore edges of cam (3), and terminal point is near the external diameter edge of cam (3).
6. prestress tension clamp according to claim 1 is characterized in that, described support (1) is pipe, square tube or hexagonal pipe.
7. according to claim 1 or 6 described prestress tension clamps, it is characterized in that an end of described support (1) has internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200883468U CN202467217U (en) | 2012-03-09 | 2012-03-09 | Prestress tension clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200883468U CN202467217U (en) | 2012-03-09 | 2012-03-09 | Prestress tension clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467217U true CN202467217U (en) | 2012-10-03 |
Family
ID=46915383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200883468U Expired - Lifetime CN202467217U (en) | 2012-03-09 | 2012-03-09 | Prestress tension clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467217U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103924A (en) * | 2013-01-22 | 2013-05-15 | 北京工业大学 | Angle self-adaptation beam bridge vertical prestressing force tensioning counter-force seat |
| CN104723051A (en) * | 2013-12-19 | 2015-06-24 | 北汽福田汽车股份有限公司 | Mechanical centering device |
| CN114473957A (en) * | 2021-12-07 | 2022-05-13 | 河南中光学集团有限公司 | Device for rapidly stopping threads and using method thereof |
-
2012
- 2012-03-09 CN CN2012200883468U patent/CN202467217U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103924A (en) * | 2013-01-22 | 2013-05-15 | 北京工业大学 | Angle self-adaptation beam bridge vertical prestressing force tensioning counter-force seat |
| CN103103924B (en) * | 2013-01-22 | 2015-01-21 | 北京工业大学 | Angle self-adaptation beam bridge vertical prestressing force tensioning counter-force seat |
| CN104723051A (en) * | 2013-12-19 | 2015-06-24 | 北汽福田汽车股份有限公司 | Mechanical centering device |
| CN114473957A (en) * | 2021-12-07 | 2022-05-13 | 河南中光学集团有限公司 | Device for rapidly stopping threads and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |