CN204780602U - Prestress wire overspeed device tensioner - Google Patents
Prestress wire overspeed device tensioner Download PDFInfo
- Publication number
- CN204780602U CN204780602U CN201520138071.8U CN201520138071U CN204780602U CN 204780602 U CN204780602 U CN 204780602U CN 201520138071 U CN201520138071 U CN 201520138071U CN 204780602 U CN204780602 U CN 204780602U
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- China
- Prior art keywords
- steel strand
- level
- oil cylinder
- piston
- bridge
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- Expired - Fee Related
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Abstract
The utility model discloses a prestress wire overspeed device tensioner, including the bridge, set up stress hole in the bridge, pass the steel strand wires in prestressing force hole, sliding fit in the front end toper clamping piece of steel strand wires and setting up relatively and the one -level hydro -cylinder and the second grade hydro -cylinder of intercommunication each other, be equipped with in the one -level hydro -cylinder with steel strand wires fixed connection's one -level piston, be equipped with in the second grade hydro -cylinder be used for with front end toper clamping piece impels the downthehole second grade piston of stress, be equipped with control circuit and through this control circuit intercommunication, its institutional advancement is ingenious between hydraulic pump oil -out and one -level hydro -cylinder and the second grade hydro -cylinder, utilize during the piston action goes into the hole site of pre -buried ground tackle pads with toper clamping piece top, and prevent the resilience, can ensure the engineering quality of bridge.
Description
Technical field
The utility model relates to pre-stressed bridge field, specifically a kind of prestress steel twist thread tensioner.
Background technology
In the construction of bridge, need steel strand in the prestressed pipe of bridge, then tensioning equipment extended steel twisted wire is used, on steel strand, cone-shaped clip is set with after stretching, steel strand are utilized to be released the resilience of rear steel strand, cone-shaped clip is made to fill in the Kong Weizhong tensioning steel strand of pre-buried ground tackle pad, this way needs to apply the power larger than the prestressing force of design by Method of Steel Strand Stretching, pulling force produces comparatively difficulty, particularly, after steel strand resilience, the prestressing force that steel strand are applied on bridge often has larger difference with the prestressing force of design, this must have a huge impact workmanship.
Therefore, the purpose of this utility model is to provide a kind of prestress steel twist thread tensioner, and its structure is improved ingenious, piston action is utilized cone-shaped clip to be headed into the Kong Weizhong of pre-buried ground tackle pad, and prevent resilience, the workmanship of bridge can be guaranteed, more convenient operation safety.
Utility model content
In view of this, the purpose of this utility model overcomes defect of the prior art, structure is provided to improve ingenious, piston action is utilized cone-shaped clip to be headed into the Kong Weizhong of pre-buried ground tackle pad, and prevent resilience, the workmanship of bridge can be guaranteed, the prestress steel twist thread tensioner of more convenient operation safety
Prestress steel twist thread tensioner of the present utility model, comprise bridge, the stress hole be arranged in bridge, through described prestress hole steel strand, be snug fit at described steel strand front end cone-shaped clip and be oppositely arranged and the one-level oil cylinder be interconnected and two-level oil cylinder; The first stage piston be fixedly connected with described steel strand is provided with in described one-level oil cylinder, be provided with the second piston for being advanced by described front end cone-shaped clip in stress hole in described two-level oil cylinder, described hydraulic pump oil-out is provided with oil circuit control with between one-level oil cylinder and two-level oil cylinder and is communicated with by this oil circuit control;
Further, described first stage piston and second piston are equipped with steel strand via hole, and described first stage piston outer end is fixed with one-level ground tackle, and described steel strand are passed described steel strand via hole and are fixedly connected with one-level ground tackle by a rear end cone-shaped clip;
Further, described first stage piston sidewall is provided with the spacing shaft shoulder, and described one-level oil cylinder outer end is provided with and coordinates spacing spacing ring with the described spacing shaft shoulder;
Further, described steel strand are provided with tensiometer, and described first stage piston outer face is provided with the cavity holding tensiometer.
Further, described tensiometer signal is connected with the display screen for showing value of thrust.
The beneficial effects of the utility model are: prestress steel twist thread tensioner of the present utility model, steel strand are through the stress hole on bridge, when after charged pressure oil in the one-level oil cylinder and two-level oil cylinder of this device, second piston in the in-oil cylinder first stage piston of one-level and two-level oil cylinder moves in the opposite direction, first stage piston is fixedly connected with steel strand and moves away from bridge, thus tension steel strand, second piston is locked by locking mechanism, after the pulling force of steel strand reaches setting value, can be unlocked the latching force of mechanism, make second piston can move towards bridge direction and push in stress hole by front end cone-shaped clip under the effect of pressure oil, steel strand are fixed and bridge one end, and then prevent steel strand resilience, the workmanship of bridge can be guaranteed, more convenient operation safety.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model, as shown in the figure, bridge 1 pre-stress stretching device of the present embodiment, comprise bridge 1, the stress hole be arranged in bridge 1, through described prestress hole steel strand, be snug fit at described steel strand front end cone-shaped clip 2 and be oppositely arranged and the one-level oil cylinder 4 be interconnected and two-level oil cylinder 3, the first stage piston 5 be fixedly connected with described steel strand is provided with in described one-level oil cylinder 4, the second piston 10 for being advanced by described front end cone-shaped clip 2 in stress hole is provided with in described two-level oil cylinder 3, described hydraulic pump oil-out is provided with oil circuit control with between one-level oil cylinder and two-level oil cylinder and is communicated with by this oil circuit control, steel strand are through the stress hole on bridge 1, when oil circuit control is after charged pressure oil in the one-level oil cylinder 4 of this device, first stage piston 5 is fixedly connected with steel strand and moves away from bridge 1, thus tension steel strand, after the pulling force of steel strand reaches setting value, oil circuit control is to two-level oil cylinder 3 oiling, second piston 10 is made to move towards bridge 1 direction under the effect of pressure oil and push in stress hole by front end cone-shaped clip 2, steel strand are fixed and bridge 1 one end, and then prevent steel strand resilience, the workmanship of bridge 1 can be guaranteed, more convenient operation safety, as shown in Figure 1, oil circuit control comprises hydraulic pump 14, reversal valve 13, be communicated with the one-level oil pipe 12 of one-level oil cylinder 4 and be communicated with the secondary oil pipe 11 of two-level oil cylinder 3, the action switching first piston 5 and second piston 10 can be controlled by reversal valve 13
In the present embodiment, described first stage piston 5 is equipped with steel strand via hole with second piston 10, and described first stage piston 5 outer end is fixed with one-level ground tackle 8, and described steel strand are passed described steel strand via hole and are fixedly connected with one-level ground tackle 8 by a rear end cone-shaped clip.
In the present embodiment, described first stage piston sidewall is provided with the spacing shaft shoulder 6, and described one-level oil cylinder outer end is provided with and coordinates spacing spacing ring 7 with the described spacing shaft shoulder 6, thus realizes the restriction to first stage piston maximum tension distance, avoids steel strand to break.
In the present embodiment, described steel strand are provided with tensiometer 9, and described first stage piston 5 outer face is provided with the cavity holding tensiometer 9.
In the present embodiment, tensiometer 9 can be electrically connected a display for intuitively being shown by the reading of tensiometer 9.
In the present embodiment, described tensiometer signal is connected with the display screen for showing value of thrust.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. a prestress steel twist thread tensioner, is characterized in that: comprise bridge, the stress hole be arranged in bridge, the steel strand through described prestress hole, the front end cone-shaped clip being snug fit at described steel strand, hydraulic pump and the one-level oil cylinder be oppositely arranged and two-level oil cylinder; The first stage piston be fixedly connected with described steel strand is provided with in described one-level oil cylinder, be provided with the second piston for being advanced by described front end cone-shaped clip in stress hole in described two-level oil cylinder, described hydraulic pump oil-out is provided with oil circuit control with between one-level oil cylinder and two-level oil cylinder and is communicated with by this oil circuit control.
2. prestress steel twist thread tensioner according to claim 1, it is characterized in that: described first stage piston and second piston are equipped with steel strand via hole, described first stage piston outer end is fixed with one-level ground tackle, and described steel strand are passed described steel strand via hole and are fixedly connected with one-level ground tackle by a rear end cone-shaped clip.
3. prestress steel twist thread tensioner according to claim 2, is characterized in that: described first stage piston first stage piston sidewall is provided with the spacing shaft shoulder, and described one-level oil cylinder outer end is provided with and coordinates spacing spacing ring with the described spacing shaft shoulder.
4. prestress steel twist thread tensioner according to claim 3, is characterized in that: described steel strand are provided with tensiometer, and described first stage piston outer face is provided with the cavity holding tensiometer.
5. prestress steel twist thread tensioner according to claim 4, is characterized in that: described tensiometer signal is connected with the display screen for showing value of thrust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520138071.8U CN204780602U (en) | 2015-03-11 | 2015-03-11 | Prestress wire overspeed device tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520138071.8U CN204780602U (en) | 2015-03-11 | 2015-03-11 | Prestress wire overspeed device tensioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204780602U true CN204780602U (en) | 2015-11-18 |
Family
ID=54520687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520138071.8U Expired - Fee Related CN204780602U (en) | 2015-03-11 | 2015-03-11 | Prestress wire overspeed device tensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204780602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818676A (en) * | 2015-03-11 | 2015-08-05 | 重庆工商职业学院 | Prestress wire tensioning device |
-
2015
- 2015-03-11 CN CN201520138071.8U patent/CN204780602U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818676A (en) * | 2015-03-11 | 2015-08-05 | 重庆工商职业学院 | Prestress wire tensioning device |
| CN104818676B (en) * | 2015-03-11 | 2016-08-17 | 重庆工商职业学院 | Prestress steel twist thread tensioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180311 |