CN208792172U - A kind of bridge prestress tensioning equipment - Google Patents
A kind of bridge prestress tensioning equipment Download PDFInfo
- Publication number
- CN208792172U CN208792172U CN201821417206.4U CN201821417206U CN208792172U CN 208792172 U CN208792172 U CN 208792172U CN 201821417206 U CN201821417206 U CN 201821417206U CN 208792172 U CN208792172 U CN 208792172U
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- steel strand
- strand wires
- sleeve
- drive disk
- sliding block
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Abstract
The utility model provides a kind of bridge prestress tensioning equipment, belongs to equipment for bridge construction technical field.This prestress tensioning equipment includes several tensioners that can be adjusted to steel strand wires progress tensioning and prestressing force of pedestal and setting on the base；Tensioner includes sleeve, sliding block, rotating block and drive disk, the outer wall of sleeve is fixedly linked with pedestal, installation step is plugged in sleeve, drive disk stretches out except sleeve, it is connected between installation step and sleeve lining by bearing, the lateral surface of rotating block is horizontally arranged with several slide bars, is connected between the medial surface of rotating block and the lateral surface of sliding block by plane bearing, it offers on drive disk and is connected in corresponding pilot hole with the one-to-one pilot hole of each slide bar, sliding bar；A threading hole is offered in the middle part of sliding block, being provided on sliding block can be to the steel strand wires clamping device that the steel strand wires being threaded through in plug wire hole are fixed.The utility model has many advantages, such as that stability is high, operating efficiency is high.
Description
Technical field
The utility model belongs to equipment for bridge construction technical field, is related to a kind of bridge prestress tensioning equipment.
Background technique
Prestressed stretch-draw is exactly to apply prestressing force in advance in Bridge Concrete component, is held so that being applied prestressed stretch-draw component
Compression chord, so that it generates certain deformation, to cope with the suffered load of beam type component itself.
Before Engineering Structure Component bears external load, to the steel strand wires in tension module, applies compressive pre-stress, improve structure
The bending resistance and rigidity of part postpone the time that crack occurs, increase the durability of component.From the point of view of mechanical structure, contain
Justice is that its is made to generate stress in advance, and benefit is that construction rigidity itself can be improved, and reduction vibration and flexible deformation are done so can
To be obviously improved the elastic strength of tension module, keep the resistance of script stronger.
In the prior art, independent tensioning is generally carried out by root steel strand wires by jack, work progress is cumbersome, and passes through liquid
Pressure device driving, for the more demanding of construction environment and construction auxiliary equipment.
That is, during entire prestressed stretch-draw, the equipment such as hydraulic cylinder need in place in entire work progress
Interior continuous operation can not have any mishap and error, otherwise will affect steel strand wires pretightning force, to cause to bridge construction
It influences.
The reliability of the existing prestress tensioning equipment to steel strand wires is poor, recycling rate of waterused is poor, to find out its cause, one
Aspect is that can not have whole equipment to control more steel strand wires, and the adjusting of stretching force can not be completed by manpower,
On the other hand the pretightning force that steel strand wires can not be maintained when not depending on external other equipment is the fixation because of steel strand wires
It is unreliable, in the case where construction environment is poor, it be easy to cause and gets rusty, is stuck, being difficult to the defects of dismounting.
Utility model content
The purpose of this utility model is aiming at the above problems existing in the prior art, to provide a kind of bridge prestress tensioning
Equipment, technical problem to be solved in the utility model be how to make itself without can be completed pair by external equipments such as fluid power
The tensioning operation of steel strand wires.
The purpose of this utility model can be realized by the following technical scheme: a kind of bridge prestress tensioning equipment, special
Sign is, this prestress tensioning equipment includes that pedestal and setting on the base several can carry out tensioning and pre- to steel strand wires
The tensioner that stress is adjusted；
The tensioner includes sleeve, sliding block, rotating block and drive disk, and outer wall and the pedestal of the sleeve are fixedly linked,
The sleeve lining has internal spline, and the outside face thereof has the external splines cooperated with internal spline, and the sleeve lining is also
With internal screw thread, the outer surface of the rotating block has the external screw thread with screw-internal thread fit, has an installation on the drive disk
Step, the installation step are plugged in sleeve, and the drive disk stretches out except sleeve, the installation step and sleeve lining it
Between by bearing be connected, the lateral surface of the rotating block is horizontally arranged with several slide bars, the medial surface and sliding block of the rotating block
Lateral surface between by plane bearing be connected, offered on the drive disk with the one-to-one pilot hole of each slide bar, it is described
Sliding bar is connected in corresponding pilot hole；
A threading hole is offered in the middle part of the sliding block, being provided on the sliding block can be to the steel being threaded through in plug wire hole
The steel strand wires clamping device that twisted wire is fixed.
By rotating drive disk, makes rotating block under internal screw thread and externally threaded cooperation, translated in sleeve, push or draw
Movable slider translates under the action of internal spline and external splines, so that the sliding block for being fixed with steel strand wires is enable to be drawn or be unclamped,
To which the pretightning force of steel strand wires be adjusted.
This equipment carries out unified fixation by base position of multiple tensioners to each steel strand wires, i.e., by pedestal to more
A tensioner is fixed, and then individually controls each steel strand wires by each tensioner, can greatly reduce labor intensity and can
Control property.
In this equipment, by way of screw thread rotation, the sliding block for being fixed with steel strand wires is controlled and adjusted, Neng Gou great
It is big to reduce the force strength for pulling steel strand wires, and laborsaving design again is carried out by larger-diameter drive disk, make to drive steel
Twisted wire tense operation can be completed by manpower, not necessarily will use hydraulic equipment or power equipment, in this way since, can
To greatly improve the dependence avoided in work progress to environmental condition and appointed condition to the reliability in bridge construction process,
Also eliminate construction accident caused by the uncontrollability of the external devices such as hydraulic equipment and construction risk.
In a kind of above-mentioned bridge prestress tensioning equipment, the steel strand wires clamping device includes being provided on the outside of sliding block
The outer of the slot of annular on face, the slot has a step surface, this steel strand wires clamping device further includes a gripping block, institute
Stating has and the corresponding plug of slot and retaining ring corresponding with step surface in gripping block, pass through one between the retaining ring and step surface
Tension spring is connected；A boss is formed between the slot and threading hole, axis is uniformly provided with several slide openings on the boss, described
A compact heap is slidably connected in slide opening, the outside of the compact heap has a protrusion, and the inside of the compact heap, which has, is in
The claw of " eight " font；The plug can expression lobes, and be resisted against claw on the steel strand wires in threading hole.
In a kind of above-mentioned bridge prestress tensioning equipment, it is hollow that one is fixedly installed on the lateral surface of the gripping block
Pull rod, the outer end of the pull rod offers the location hole being on same straight line with threading hole, the outer end screw thread of the pull rod
It is connected with an end cap.
The end of steel strand wires on the lateral surface of pull rod, by the compression of end cap, makes steel strand wires by way of bending
End be fixed, keep the fixation of steel strand wires relatively reliable.
When being inserted into steel strand wires, pull rod can be drawn in addition, makes plug far from slot, compact heap is avoided to make the insertion of steel strand wires
At obstruction, when steel strand wires are inserted into appropriate location, releasing lever, under the action of tension spring, inserted block is inserted into slot, makes to compress
Block clamps steel strand wires.
By being fixed twice to steel strand wires, i.e., end is fixed by end cap, inside line by compact heap into
Row clamping, keeps the clamping of steel strand wires relatively reliable, at the same time, due to steel strand wires tension, gripping block is driven to have to sliding block
Direction is mobile to drive, and keeps plug bigger to the active force of compact heap, to keep steel strand wires clamping more stable, that is, steel strand wires
When causing stress and bearing capacity to steel strand wires when by external forces or in work progress, the clamping of steel strand wires can be more next
It is more secured.
In a kind of above-mentioned bridge prestress tensioning equipment, the slide opening is in " I " fonts, and the claw and protrusion can
Dismantling connection.
Slide opening is in " I " fonts, it can be ensured that compact heap will not drop out in sliding block, and two components of compact heap are removable
Unload connection, make compact heap installation can be light be mounted in slide opening.
Wherein, the outer end of claw has the connector of a bar shape, has threaded hole on connector, raised inner segment has
Pin, pin are threaded in threaded hole, and connector is slidably connected at the middle part of slide opening, and protrusion can be contracted in slide opening
Outer portion part, claw can be contracted in the inner section of slide opening, and when penetrating steel strand wires, protrusion is overhanging, and claw is contracted to the inside of slide opening
Section, in order to the insertion of steel strand wires, in plug insertion, protrusion moves inward, claw synchronizing moving, and carries out to steel strand wires
Clamping.
In a kind of above-mentioned bridge prestress tensioning equipment, if being circumferentially evenly arranged on the outer peripheral surface of the drive disk
Dry lump of force.
Lump of force can be used for extraneous spanner, steel pipe etc., keep operation driving disc spins more laborsaving.
In a kind of above-mentioned bridge prestress tensioning equipment, circumferentially it is evenly distributed on the lateral surface of the sleeve several
Locking hole is threaded with a locking bolt on the drive disk, and the locking bolt can be plugged in locking hole.
After the position of drive disk is adjusted, it can be fixed by the position of locking bolt drive disk and sleeve, thus
It avoids maloperation or is relaxed under the pulling force effect of steel strand wires.
In a kind of above-mentioned bridge prestress tensioning equipment, the bottom of the pedestal is provided with a mounting plate, the peace
Several ground piles are threaded in loading board, the mounting plate can be fixed on the ground by ground pile.
Mounting plate is fixed on the ground by ground pile, since the steel strand tension duration is longer, ground can be passed through
Fixed mode keeps each tensioner relatively reliable, moreover, stability can not only be improved by way of unified fixation, and
Labor intensity can also be lowered, for fixing the mode of jack one by one, can more be saved by unified fixed mounting plate
Shi Shengli.
Detailed description of the invention
Fig. 1 is the overall structure diagram of this bridge prestress tensioning equipment.
Fig. 2 is the sectional view of tensioner.
Fig. 3 is the enlarged drawing of part A in Fig. 2.
In figure, 1, pedestal；11, mounting plate；12, ground pile；21, sleeve；22, sliding block；23, rotating block；24, drive disk；25,
Installation step；26, slide bar；27, pilot hole；28, threading hole；31, slot；32, step surface；33, gripping block；34, plug；35,
Retaining ring；36, tension spring；37, boss；38, slide opening；39, compact heap；391, raised；392, claw；41, pull rod；42, location hole；
43, end cap；5, lump of force；61, locking hole；62, locking bolt.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As depicted in figs. 1 and 2, this prestress tensioning equipment includes that pedestal 1 can be right with several being arranged on pedestal 1
The tensioner that steel strand wires carry out tensioning and prestressing force is adjusted；
Tensioner includes sleeve 21, sliding block 22, rotating block 23 and drive disk 24, the outer wall and 1 stationary phase of pedestal of sleeve 21
Even, 21 inner wall of sleeve has internal spline, and 22 outer surface of sliding block has the external splines cooperated with internal spline, and 21 inner wall of sleeve also has
Internal screw thread, the outer surface of rotating block 23 have the external screw thread with screw-internal thread fit, have an installation step 25, peace on drive disk 24
Dress step 25 is plugged in sleeve 21, and drive disk 24 stretches out except sleeve 21, is passed through between 21 inner wall of installation step 25 and sleeve
Bearing is connected, and the lateral surface of rotating block 23 is horizontally arranged with several slide bars 26, the medial surface of rotating block 23 and the outside of sliding block 22
It is connected between face by plane bearing, offers on drive disk 24 and slided with the one-to-one pilot hole 27 of each slide bar 26, slide bar 26
It is dynamic to be connected in corresponding pilot hole 27；
The middle part of sliding block 22 offers a threading hole 28, and the steel being threaded through in plug wire hole can be twisted by being provided on sliding block 22
The steel strand wires clamping device that line is fixed.
By rotating drive disk 24, makes rotating block 23 under internal screw thread and externally threaded cooperation, translate, push away in sleeve 21
Dynamic or pulling sliding block 22 translates under the action of internal spline and external splines, so that the sliding block for being fixed with steel strand wires 22 be enable to be drawn
Or unclamp, so that the pretightning force to steel strand wires is adjusted.
This equipment carries out unified fixation by base position of multiple tensioners to each steel strand wires, i.e., by pedestal 1 to more
A tensioner is fixed, and then individually controls each steel strand wires by each tensioner, can greatly reduce labor intensity and can
Control property.
In this equipment, by way of screw thread rotation, the sliding block 22 for being fixed with steel strand wires is controlled and adjusted, it can
The force strength for pulling steel strand wires is substantially reduced, and laborsaving design again is carried out by larger-diameter drive disk 24, makes to drive
The operation that dynamic steel strand wires tense can be completed by manpower, not necessarily use hydraulic equipment or power equipment, in this way with
Come, can greatly improve to the reliability in bridge construction process, avoids in work progress to environmental condition and appointed condition
It relies on, also eliminates construction accident caused by the uncontrollability of the external devices such as hydraulic equipment and construction risk.
As shown in Figures 2 and 3, steel strand wires clamping device includes the slot 31 for the annular being provided on 22 lateral surface of sliding block,
The outer of slot 31 has a step surface 32, this steel strand wires clamping device further includes a gripping block 33, have in gripping block 33 with
The corresponding plug 34 of slot 31 and retaining ring 35 corresponding with step surface 32 pass through 36 phase of a tension spring between retaining ring 35 and step surface 32
Even；A boss 37 is formed between slot 31 and threading hole 28, axis is uniformly provided with several slide openings 38 on boss 37, in slide opening 38
A compact heap 39 is slidably connected, the outside of compact heap 39 has a protrusion 391, and it is in " eight " font that the inside of compact heap 39, which has,
Claw 392；Plug 34 can expression lobes 391, and be resisted against claw 392 on the steel strand wires in threading hole 28.
A hollow pull rod 41 is fixedly installed on the lateral surface of gripping block 33, the outer end of pull rod 41 offers and threading hole
28 location hole 42 on same straight line, the outer end of pull rod 41 is threaded with an end cap 43.
The end of steel strand wires on the lateral surface of pull rod 41, by the compression of end cap 43, makes steel by way of bending
The end of twisted wire is fixed, and keeps the fixation of steel strand wires relatively reliable.
When being inserted into steel strand wires, pull rod 41 can be drawn in addition, makes plug 34 far from slot 31, avoids compact heap 39 to steel strand wires
Insertion cause to hinder, when steel strand wires are inserted into appropriate location, releasing lever 41, under the action of tension spring 36, inserted block insertion
In slot 31, clamp compact heap 39 to steel strand wires.
By being fixed twice to steel strand wires, i.e., end is fixed by end cap 43, and inside line passes through compact heap
39 are clamped, and keep the clamping of steel strand wires relatively reliable, at the same time, due to steel strand wires tension, drive gripping block 33 have to
The direction of sliding block 22 is mobile to drive, and keeps plug 34 bigger to the active force of compact heap 39, to keep steel strand wires clamping more steady
It is fixed, that is, when steel strand wires cause stress and bearing capacity to steel strand wires when by external forces or in work progress, steel strand wires
Clamping can be more and more secured.
Slide opening 38 is in " I " fonts, and claw 392 is detachably connected with protrusion 391.Slide opening 38 is in " I " fonts, it can be ensured that
Compact heap 39 will not drop out in sliding block 22, and two components of compact heap 39 are detachably connected, and make the installation of compact heap 39 can
Light is mounted in slide opening 38.
Wherein, the outer end of claw 392 has the connector of a bar shape, has threaded hole on connector, protrusion 391 it is interior
Section has pin, and pin is threaded in threaded hole, and connector is slidably connected at the middle part of slide opening 38, and protrusion 391 can
It is contracted in the outer portion part of slide opening 38, claw 392 can be contracted in the inner section of slide opening 38, when penetrating steel strand wires, outside protrusion 391
It stretches, claw 392 is contracted to the inner section of slide opening 38, and in order to the insertion of steel strand wires, when plug 34 is inserted into, protrusion 391 is inwardly
Side is mobile, 392 synchronizing moving of claw, and clamps to steel strand wires.
Several lump of forces 5 are circumferentially evenly arranged on the outer peripheral surface of drive disk 24.Lump of force 5 can be used for extraneous spanner,
Steel pipe etc. rotates operation drive disk 24 more laborsaving.
It is circumferentially evenly distributed with several locking holes 61 on the lateral surface of sleeve 21, is threaded with a locking on drive disk 24
Bolt 62, locking bolt 62 can be plugged in locking hole 61.After the position of drive disk 24 is adjusted, locking bolt can be passed through
The position of 62 drive disks 24 and sleeve 21 is fixed, to avoid maloperation or relax under the pulling force effect of steel strand wires.
The bottom of pedestal 1 is provided with a mounting plate 11, and several ground piles 12,11 energy of mounting plate are threaded on mounting plate 11
Enough fixed on the ground by ground pile 12.Mounting plate 11 is fixed on the ground by ground pile 12, since steel strand tension continues
Time is longer, each tensioner can be kept relatively reliable in such a way that ground is fixed, moreover, by way of unified fixation, no
It only can be improved stability, but also labor intensity can be lowered, for fixing the mode of jack one by one, pass through unification
Fixed mounting plate 11 can be more time saving and energy saving.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (7)
1. a kind of bridge prestress tensioning equipment, which is characterized in that this prestress tensioning equipment includes pedestal (1) and is arranged in base
Several on seat (1) can carry out the tensioner of tensioning and prestressing force adjusting to steel strand wires；
The tensioner includes sleeve (21), sliding block (22), rotating block (23) and drive disk (24), the outer wall of the sleeve (21)
It is fixedly linked with pedestal (1), sleeve (21) inner wall has internal spline, and sliding block (22) outer surface has matches with internal spline
The external splines of conjunction, sleeve (21) inner wall also have internal screw thread, and the outer surface of the rotating block (23) has matches with internal screw thread
The external screw thread of conjunction, has an installation step (25) on the drive disk (24), and the installation step (25) is plugged in sleeve (21)
Interior, the drive disk (24) is stretched out except sleeve (21), passes through bearing between the installation step (25) and sleeve (21) inner wall
It is connected, the lateral surface of the rotating block (23) is horizontally arranged with several slide bars (26), the medial surface and cunning of the rotating block (23)
It is connected between the lateral surface of block (22) by plane bearing, offers on the drive disk (24) and corresponded with each slide bar (26)
Pilot hole (27), the slide bar (26) is slidably connected in corresponding pilot hole (27)；
It is offered a threading hole (28) in the middle part of the sliding block (22), being provided on the sliding block (22) can be to being threaded through plug wire
The steel strand wires clamping device that steel strand wires in hole are fixed.
2. a kind of bridge prestress tensioning equipment according to claim 1, which is characterized in that the steel strand wires clamping device packet
The slot (31) for the annular being provided on sliding block (22) lateral surface is included, the outer of the slot (31) has a step surface (32),
This steel strand wires clamping device further includes a gripping block (33), has plug corresponding with slot (31) on the gripping block (33)
(34) and retaining ring corresponding with step surface (32) (35), pass through a tension spring (36) phase between the retaining ring (35) and step surface (32)
Even；Formed a boss (37) between the slot (31) and threading hole (28), the boss (37) if on axis be uniformly provided with
Dry slide opening (38), the slide opening (38) is interior to be slidably connected a compact heap (39), and the outside of the compact heap (39) is convex with one
It rises (391), the inside of the compact heap (39) has the claw (392) in " eight " font；The plug (34) can squeeze convex
It rises (391), and is resisted against claw (392) on the steel strand wires in threading hole (28).
3. a kind of bridge prestress tensioning equipment according to claim 2, which is characterized in that the outside of the gripping block (33)
A hollow pull rod (41) is fixedly installed on face, the outer end of the pull rod (41), which is offered, to be in threading hole (28) with always
The outer end of location hole (42) on line, the pull rod (41) is threaded with an end cap (43).
4. a kind of bridge prestress tensioning equipment according to Claims 2 or 3, which is characterized in that the slide opening (38) is in
" I " fonts, the claw (392) are detachably connected with raised (391).
5. a kind of according to claim 1 or 2 or 3 bridge prestress tensioning equipments, which is characterized in that the drive disk (24)
Outer peripheral surface on be circumferentially evenly arranged with several lump of forces (5).
6. a kind of according to claim 1 or 2 or 3 bridge prestress tensioning equipments, which is characterized in that the sleeve (21)
It is circumferentially evenly distributed on lateral surface several locking holes (61), is threaded with a locking bolt on the drive disk (24)
(62), the locking bolt (62) can be plugged in locking hole (61).
7. a kind of according to claim 1 or 2 or 3 bridge prestress tensioning equipments, which is characterized in that the pedestal (1)
Bottom is provided with a mounting plate (11), is threaded with several ground piles (12) on the mounting plate (11), the mounting plate (11)
It can be fixed on the ground by ground pile (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821417206.4U CN208792172U (en) | 2018-08-30 | 2018-08-30 | A kind of bridge prestress tensioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821417206.4U CN208792172U (en) | 2018-08-30 | 2018-08-30 | A kind of bridge prestress tensioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208792172U true CN208792172U (en) | 2019-04-26 |
Family
ID=66207739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821417206.4U Expired - Fee Related CN208792172U (en) | 2018-08-30 | 2018-08-30 | A kind of bridge prestress tensioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208792172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951428A (en) * | 2018-08-30 | 2018-12-07 | 湖北科技学院 | A kind of bridge prestress tensioning equipment |
-
2018
- 2018-08-30 CN CN201821417206.4U patent/CN208792172U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951428A (en) * | 2018-08-30 | 2018-12-07 | 湖北科技学院 | A kind of bridge prestress tensioning equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190426 Termination date: 20210830 |
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| CF01 | Termination of patent right due to non-payment of annual fee |