CN219794698U - High-strength bolt prestress synchronous tensioning device - Google Patents
High-strength bolt prestress synchronous tensioning device Download PDFInfo
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- CN219794698U CN219794698U CN202320981995.9U CN202320981995U CN219794698U CN 219794698 U CN219794698 U CN 219794698U CN 202320981995 U CN202320981995 U CN 202320981995U CN 219794698 U CN219794698 U CN 219794698U
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- strength bolt
- cover plate
- prestress
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 29
- 238000010276 construction Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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Abstract
The utility model discloses a high-strength bolt prestress synchronous tensioning device, which comprises: the high-strength bolt to be stretched is fixed on the flange plate and comprises a plurality of stiffening ribs, one ends of the stiffening ribs are fixed on the lower end face of the jack, and the high-strength bolt to be stretched is connected with the connecting screw rod through the bolt sleeve; the chambers of a plurality of oil cylinders in the jack are communicated with each other; the upper cover plate is arranged above the jack; the connecting screw rod passes through the jack and the upper cover plate in sequence and then is connected with a first fixing nut, and the first fixing nut is screwed on the connecting screw rod to fix the upper cover plate. The high-strength bolt prestress synchronous tensioning device disclosed by the utility model can synchronously perform prestress tensioning on a plurality of high-strength bolts, solves the problems of prestress loss and uneven prestress caused by tensioning sequence, can effectively improve the efficiency of site construction and reduces the construction cost.
Description
Technical Field
The utility model relates to the technical field of constructional engineering, in particular to a high-strength bolt prestress synchronous tensioning device.
Background
The traditional high-strength bolt prestress tensioning device generally stretches a single bolt once, the tensioning process is time-consuming and labor-consuming, the procedure is complex, and the cost is high.
Moreover, the tensioning sequence of the bolts has a larger influence on the loss of the prestress, so that the uneven prestress applied by different bolts can be caused, and the application effect of the prestress is influenced.
Disclosure of Invention
The utility model aims to provide a high-strength bolt prestress synchronous tensioning device which can solve at least one of the technical problems, and the technical scheme of the utility model is as follows:
a high strength bolt pre-stress synchronous tensioning device, comprising: the high-strength bolt tensioning device comprises a flange plate, a base, bolt sleeves, jacks, an upper cover plate, first fixing nuts and connecting screws, wherein one ends of a plurality of high-strength bolts to be tensioned are fixed on the flange plate, one connecting screw is correspondingly arranged on each high-strength bolt to be tensioned, and one ends of the high-strength bolts to be tensioned, which are not fixed on the flange plate, are correspondingly connected with the connecting screws one by one through the bolt sleeves; the base comprises a plurality of stiffening ribs, one end of each stiffening rib is fixed on the lower end face of the jack, the jack is an annular jack matched with the flange, the jack comprises a plurality of oil cylinders, and the chambers of the oil cylinders are mutually communicated; the upper cover plate is arranged above the jack, and when the piston moves in the jack, the jack applies upward acting force to the upper cover plate; the connecting screw rod passes through the jack and the upper cover plate in sequence and then is connected with the first fixing nut, and the first fixing nut is screwed on the connecting screw rod to fix the upper cover plate.
In some embodiments, the jack is provided with an oil inlet.
In some embodiments, the jack comprises two semi-annular jacks connected by a first connecting lug plate to form an annular jack.
In some embodiments, one oil inlet is provided for each semi-annular jack.
In some embodiments, the upper cover plate is an annular upper cover plate matched with the jack, the upper cover plate comprises two semi-annular upper cover plates, and the two semi-annular upper cover plates are connected through a second connecting lug plate to form the annular upper cover plate.
In some embodiments, the other end of the stiffener abuts the upper end surface of the flange.
In some embodiments, a plurality of screw holes are formed in the flange plate, each screw hole is used for fixing a high-strength bolt to be tensioned, a plurality of first through holes are formed in the jack, the positions and the number of the first through holes correspond to those of the screw holes, a plurality of second through holes are formed in the upper cover plate, the positions and the number of the second through holes correspond to those of the first through holes, and the connecting screw rod sequentially penetrates through the first through holes and the second through holes and then is connected with the first fixing nut.
In some embodiments, the head of the high-strength bolt to be tensioned is arranged below the flange plate, and the screw rod of the high-strength bolt to be tensioned passes through the screw hole and is fixed by the second fixing nut.
When the high-strength bolt tensioning device is used, one ends of a plurality of high-strength bolts to be tensioned are fixedly connected to a flange, the heads of the high-strength bolts to be tensioned are located below the flange, the screw rods of the high-strength bolts to be tensioned are located above the flange, the screw rods of the high-strength bolts to be tensioned and one ends of connecting screw rods are connected together through screw sleeves, the other ends of the connecting screw rods sequentially penetrate through a jack and an upper cover plate, at the moment, one end of each connecting screw rod, far away from the screw sleeve, is exposed out of the upper cover plate, and a first fixing nut is screwed on one end of each connecting screw rod, exposed out of the upper cover plate, so that the position of the upper cover plate is fixed. When the jack pressurizes, the jack produces ascending effort to the upper cover plate, but the upper cover plate can't move under the restraint effect of first fixation nut, and tensioning force passes through connecting screw rod and bolt sleeve and transmits for the bolt that excels in, and the screw rod of the bolt that excels in is stretched, screws up the second fixation nut on the ring flange in proper order this moment, and after the whole back of screwing up of second fixation nut, the jack pressure release shifts out the bolt sleeve and excels in the bolt, accomplishes the application of the bolt prestressing force that excels in.
The utility model has the beneficial effects that a plurality of high-strength bolts can be synchronously prestressed and tensioned, the problems of prestress loss and uneven prestress caused by tensioning sequence are solved, the site construction efficiency can be effectively improved, and the construction cost is reduced.
In addition, in the technical scheme of the utility model, the technical scheme can be realized by adopting conventional means in the field without specific description.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a high-strength bolt prestress synchronous tensioning device according to an embodiment of the utility model.
Fig. 2 is a schematic structural diagram of an upper cover plate of a high-strength bolt prestress synchronous tensioning device according to an embodiment of the utility model.
Fig. 3 is a schematic structural diagram of a jack of a high-strength bolt prestress synchronous tensioning device according to an embodiment of the utility model.
Fig. 4 is a partial exploded view of a high strength bolt pre-stressing synchronous tensioning device in accordance with an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are illustrative of some, but not all embodiments of the utility model and are not intended to limit the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "both ends", "two sides", "bottom", "top", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "superior," "subordinate," "primary," "secondary," and the like are used for descriptive purposes only and may be used simply to more clearly distinguish between different components and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or communicating between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to the accompanying drawings 1-4 of the specification, a high-strength bolt prestress synchronous tensioning device is disclosed, comprising: the device comprises a flange plate 1, a base 2, a bolt sleeve 3, a jack 4, an upper cover plate 5, a first fixing nut 6 and a connecting screw 9.
The flange plate 1 is used for fixing a high-strength bolt 7 to be tensioned. Specifically, a plurality of screw holes can be formed in the flange plate 1, and each screw hole can be used for passing through a high-strength bolt 7 to be tensioned. In this embodiment, the number of screw holes is eight.
Each high-strength bolt 7 to be tensioned is correspondingly provided with a connecting screw rod 9, and one end of the high-strength bolt 7 to be tensioned, which is not fixed on the flange plate 1, is correspondingly connected with the connecting screw rods 9 one by one through the bolt sleeve 3. Referring to fig. 4 of the specification, a partial explosion view of the high-strength bolt prestress synchronous tensioning device provided by the utility model is shown, a high-strength bolt 7 to be tensioned is fixed on a flange plate through a second fixing nut 8, and a screw rod of the high-strength bolt 7 to be tensioned is connected with one end of a connecting screw rod 9 through a bolt sleeve 3.
The base 2 comprises a plurality of stiffening ribs 21, and one end of each stiffening rib 21 is fixed on the lower end face of the jack 4. In an alternative embodiment, the base 2 may further comprise a motherboard, an upper end surface of which is fixedly connected to a lower end surface of the jack 4, and one end of the stiffening rib 21 is fixed to the lower end surface of the motherboard. The bolt sleeve 3 should be located in a compartment separated by two adjacent stiffening ribs 21, during which tensioning forces can be transmitted through the connecting screw 9 and the bolt sleeve 3.
The jack 4 is an annular jack matched with the flange plate, the jack 4 comprises a plurality of oil cylinders, and the chambers of the oil cylinders are mutually communicated. The upper cover plate 5 is arranged above the jack 4, and when the jack 4 performs piston movement, the jack 4 can apply upward acting force to the upper cover plate 5. Specifically, the number of cylinders may be the same as the number of high-strength bolts 7 to be tensioned.
The connecting screw rod 9 is far away from one end of the bolt sleeve 3, penetrates through the jack 4 and the upper cover plate 5 in sequence and then is connected with the first fixing nut 6, and the first fixing nut 6 is screwed on the connecting screw rod 9 to fix the upper cover plate 5.
When the embodiment provided by the utility model is used, a plurality of high-strength bolts 7 to be stretched are fixedly connected to the flange plate 1, at the moment, the heads of the high-strength bolts 7 to be stretched are positioned below the flange plate 1, the screw rods of the high-strength bolts 7 to be stretched are positioned above the flange plate 1, the screw rods of the high-strength bolts 7 to be stretched and one ends of the connecting screw rods 9 are connected together by using the bolt sleeves, the other ends of the connecting screw rods 9 sequentially penetrate through the jack 4 and the upper cover plate 5, at the moment, the bolt sleeves 3 are positioned in a region separated by two adjacent stiffening ribs 21, one end of each connecting screw rod 9 far away from the bolt sleeve 3 is exposed out of the upper cover plate 5, and the first fixing nuts 6 are screwed at one end of each connecting screw rod 9 exposed out of the upper cover plate 5, so that the position of the upper cover plate 5 is fixed. When the jack 4 pressurizes, the jack 4 generates upward acting force on the upper cover plate 5, but the upper cover plate 5 cannot move under the constraint action of the first fixing nut 6, and the tensioning force is transmitted to the high-strength bolts through the connecting screw rods and the bolt sleeves, so that the synchronous tensioning of prestress of a plurality of high-strength bolts to be tensioned is realized; in addition, as the chambers of the oil cylinders in the jack 4 are mutually communicated, the synchronous pressurization can be realized to drive all the oil cylinders to simultaneously perform piston movement, the tensioning sequence is eliminated, the prestress loss is reduced, the prestress is prevented from being uneven, the tensioning efficiency and quality are improved, and the construction cost is reduced.
In an alternative embodiment, the jack 4 is provided with an oil inlet 43. Therefore, one oil inlet hole 43 can be communicated with each cavity in the jack 4, synchronous pressurization is realized to drive the piston in the jack 4 to move, and a better synchronous tensioning effect is realized.
In an alternative embodiment, the jack 4 comprises two semi-annular jacks 41, two ends of the semi-annular jacks 41 are provided with first connecting lug plates 42, and the two semi-annular jacks 41 are connected through the first connecting lug plates 42 to form the annular jack. The upper cover plate 5 is an annular upper cover plate matched with the jack 4, the upper cover plate 5 comprises two semi-annular upper cover plates 51, second connecting lug plates 52 are arranged at two ends of the semi-annular upper cover plates 51, and the two semi-annular upper cover plates 51 are connected through the second connecting lug plates 52 to form the annular upper cover plate. The application scene of the high-strength bolt prestress synchronous tensioning device provided by the utility model can be that the high-strength bolt prestress synchronous tensioning device is applied to the cylindrical steel pipe 10, and the two semi-annular structures are assembled into the annular structure, so that the complexity and the manufacturing cost of the manufacturing process of the device can be reduced, the manufacturability of the device can be improved, and the device can be conveniently installed and detached.
Specifically, the first connection lugs 42 may be connected using bolts. The second connection lugs 52 may also be connected using bolts.
When the jack 4 is assembled by two semi-annular jacks 41, the chambers of the oil cylinders in each semi-annular jack 41 are mutually communicated, and at the moment, each semi-annular jack 41 is provided with an oil inlet 43. Because the chambers of the oil cylinders in each semi-annular jack 41 are mutually communicated, one oil inlet hole 43 can be communicated with each chamber in the semi-annular jack 41, so that the synchronous pressurization is realized to drive the piston in the semi-annular jack 41 to move, and a better synchronous tensioning effect is realized.
In an alternative embodiment, the other end of the stiffening rib 21 abuts against the upper end face of the flange 1 when the first fixing nut 6 is screwed. Therefore, the tensioning quality of the high-strength bolt can be better improved.
In an alternative embodiment, a plurality of screw holes are formed in the flange plate 1, each screw hole is used for fixing a high-strength bolt 7 to be tensioned, a plurality of first through holes are formed in the jack 4, the positions and the number of the first through holes correspond to those of the screw holes, the first through holes can be used for allowing the high-strength bolts 7 to pass through, a plurality of second through holes are formed in the upper cover plate 5, and the positions and the number of the second through holes correspond to those of the first through holes. From this, through set up screw, first through-hole and second through-hole on ring flange 1, jack 4 and upper cover plate 5 and supply to wait to stretch-draw high strength bolt 7 and connecting screw 9 to pass through, be convenient for wait to stretch-draw high strength bolt 7's dismantlement, improve stretch-draw efficiency.
In an alternative embodiment, the head of the high-strength bolt 7 to be tensioned is arranged below the flange plate 1, and the screw rod of the high-strength bolt 7 to be tensioned passes through the screw hole and is fixed by the second fixing nut 8 and then is sleeved in the bolt sleeve 3. Therefore, the second fixing nuts 8 are used for fixing the high-strength bolts 7 to be tensioned, the second fixing nuts 8 on the flange plate are sequentially screwed when the screw rods of the high-strength bolts 7 to be tensioned are stretched, after the second fixing nuts 8 are completely screwed, the jack 4 is decompressed, the bolt sleeve 3 is moved out of the high-strength bolts, and therefore the application of the prestress of the high-strength bolts is completed.
In an alternative embodiment, the number and the diameter of the screw holes on the flange plate 1 can be set according to actual engineering requirements, and correspondingly, the number and the diameter of the first through holes and the second through holes are changed along with the screw holes.
The utility model has the beneficial effects that the synchronous prestress tensioning of a plurality of high-strength bolts can be realized, the construction efficiency of prestress tensioning of the high-strength bolts is improved, the problems of prestress loss and uneven prestress caused by different tensioning sequences are solved, the site construction efficiency can be effectively improved, the construction procedure is optimized, and the construction cost is reduced.
The foregoing description of the embodiments of the present utility model is merely illustrative of the technical solutions of the present utility model and not limiting thereof, and it should be understood that modifications and substitutions can be made by those skilled in the art without departing from the inventive concept of the present utility model, and all such modifications and substitutions shall fall within the scope of the appended claims. In this case, all details may be replaced with equivalent elements, and the materials, shapes and sizes may be arbitrary.
Claims (8)
1. The utility model provides a synchronous stretching device of high strength bolt prestressing force which characterized in that includes:
the flange plate (1), the base (2), the bolt sleeve (3), the jack (4), the upper cover plate (5), the first fixing nut (6) and the connecting screw rod (9),
one end of a plurality of high-strength bolts (7) to be stretched is fixed on the flange plate (1),
each high-strength bolt (7) to be tensioned is correspondingly provided with one connecting screw rod (9), and one end of each high-strength bolt (7) to be tensioned, which is not fixed on the flange plate (1), is correspondingly connected with the connecting screw rods (9) one by one through the bolt sleeve (3);
the base (2) comprises a plurality of stiffening ribs (21), one end of each stiffening rib (21) is fixed on the lower end face of the jack (4),
the jack (4) is an annular jack matched with the flange, the jack (4) comprises a plurality of oil cylinders, and the chambers of the oil cylinders are mutually communicated;
the upper cover plate (5) is arranged above the jack (4), and when the jack (4) performs piston movement, the jack (4) applies upward acting force to the upper cover plate (5);
the connecting screw rod (9) sequentially penetrates through the jack (4) and the upper cover plate (5) and then is connected with the first fixing nut (6), and the first fixing nut (6) is screwed on the connecting screw rod (9) to fix the upper cover plate (5).
2. The high-strength bolt prestress synchronous tensioning device according to claim 1, wherein the jack (4) is provided with an oil inlet hole (43).
3. The device for synchronously tensioning the prestress of the high-strength bolt according to claim 1, wherein,
the jack (4) comprises two semi-annular jacks (41), and the two semi-annular jacks (41) are connected through a first connecting lug plate (42) to form the annular jack.
4. A high-strength bolt pre-stressing synchronous tensioning device according to claim 3, characterized in that each semi-annular jack (41) is provided with an oil inlet (43).
5. A high-strength bolt pre-stressing synchronous tensioning device according to claim 3, characterized in that the upper cover plate (5) is an annular upper cover plate matched with the jack (4), the upper cover plate (5) comprises two semi-annular upper cover plates (51), and the two semi-annular upper cover plates (51) are connected through a second connecting lug plate (52) to form the annular upper cover plate.
6. A high-strength bolt pre-stressing synchronous tensioning device according to claim 1, characterized in that the other end of the stiffening rib (21) is in contact with the upper end face of the flange plate (1).
7. The high-strength bolt prestress synchronous tensioning device according to claim 1, wherein a plurality of screw holes are formed in the flange plate (1), each screw hole is used for fixing a high-strength bolt (7) to be tensioned, a plurality of first through holes are formed in the jack (4), the positions and the number of the first through holes correspond to those of the screw holes, a plurality of second through holes are formed in the upper cover plate (5), the positions and the number of the second through holes correspond to those of the first through holes, and the connecting screw (9) sequentially penetrates through the first through holes and the second through holes and then is connected with the first fixing nut (6).
8. The high-strength bolt prestress synchronous tensioning device according to claim 7, wherein the head of the high-strength bolt (7) to be tensioned is arranged below the flange plate (1), and a screw of the high-strength bolt (7) to be tensioned passes through the screw hole and is fixed by a second fixing nut (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320981995.9U CN219794698U (en) | 2023-04-26 | 2023-04-26 | High-strength bolt prestress synchronous tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320981995.9U CN219794698U (en) | 2023-04-26 | 2023-04-26 | High-strength bolt prestress synchronous tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219794698U true CN219794698U (en) | 2023-10-03 |
Family
ID=88157267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320981995.9U Active CN219794698U (en) | 2023-04-26 | 2023-04-26 | High-strength bolt prestress synchronous tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219794698U (en) |
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2023
- 2023-04-26 CN CN202320981995.9U patent/CN219794698U/en active Active
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