CN216973155U

CN216973155U - Equal-stress hydraulic clamping device

Info

Publication number: CN216973155U
Application number: CN202220589208.1U
Authority: CN
Inventors: 李金岭; 李振启; 郝永虎; 孙宏伟; 张型中; 艾青; 梁玉
Original assignee: Kaifeng Qiangli Group Maogu Technology Co ltd
Current assignee: Kaifeng Qiangli Group Maogu Technology Co ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-07-15
Anticipated expiration: 2032-03-18

Abstract

The utility model provides an equal-stress hydraulic pressure adding device, which comprises a mounting frame, a first mounting ring and a second mounting ring which are respectively arranged at two end parts of the mounting frame, and a first multi-hole round anchor arranged on the first mounting ring, wherein the outer peripheral surface of the first multi-hole round anchor is provided with at least one strip-shaped boss, the inner peripheral surface of the first mounting ring is provided with an inserting groove which is matched with the strip-shaped boss in an inserting way, the inserting groove extends from the first end of the first mounting ring far away from the second mounting ring to the second end close to the second mounting ring, one end of the inserting groove close to the second end is provided with a first limiting surface, the inner surface of the inserting groove is provided with a second limiting surface facing the first limiting surface, the second limiting surface is configured to slide along the direction which is vertically arranged in the length direction of the inserting groove, and when the strip-shaped boss is inserted into the inserting groove, two ends of the strip-shaped boss are respectively abutted against the first limiting surface and the second limiting surface, the arrangement mode is convenient for the installation and the disassembly of the first multi-hole round anchor.

Description

Equal-stress hydraulic clamping device

Technical Field

The utility model relates to the technical field of steel strand tensioning, in particular to an equal-stress hydraulic clamping device.

Background

In the construction engineering such as great highway of span, bridge, the steel strand wires as the cable all need adopt first jack to carry out the prestressing force and stretch when the installation for it produces certain deformation, can bear the load that the steel member itself received, increases the use durability of steel member. Along with the development of science and technology, use novel highway bridge steel strand stretching to carry out the steel strand of cable with first jack and carry out the prestressing force stretching processing with the stretch-draw in the market.

When shuttling the steel strands, the existing process usually utilizes a steel strand shuttling machine or a steel strand traction head to sequentially shuttle and install a plurality of steel strands at preset installation positions of the precast beam, for the steel strand installation mode that a plurality of steel strands are sequentially installed at the preset installation positions of the precast beam in a shuttling manner, the friction force borne by the steel strands shuttling backwards is higher and higher, the steel strand is bent after part of the steel strands shuttle to the pre-installation position of the precast beam, so that the shuttle length difference between the steel strands installed at the back and the steel strands shuttle at the front is too large, the shuttle length difference of a plurality of steel strands can cause different tensioning degrees of the steel strands of the plurality of steel strands, and the steel strand with shorter shuttle length among the plurality of steel strands can be stressed too high after being tensioned, so that the tensioning is excessive, and the stress among the plurality of steel strands is uneven; aiming at the technical problem, the application number is as follows: CN202121022845.2, providing a patent name: a hydraulic clamping device for adjusting the tension degree of steel strands is disclosed, referring to figure 1, which is a schematic structural diagram of the device, the device is used for adjusting the shuttle length of a plurality of steel strands before simultaneously tensioning the plurality of steel strands, the shuttle length of the plurality of steel strands for shuttling through holes of a prefabricated bridge is consistent after adjustment, the stress is approximately equal, the technical problem that the shuttle length of the plurality of steel strands before non-tensioning is different in the process of simultaneously tensioning the plurality of steel strands is reduced, the technical problem that the plurality of steel strands are different in degree due to different shuttle lengths before non-tensioning is solved, the effect that the plurality of steel strands are subjected to equal stress when in use is achieved, but a first porous round anchor 2 in the device is fixedly connected with a first mounting ring 26 on a mounting frame 1 through bolts, and the first porous round anchor 2 needs to be adaptively replaced according to different diameters of the steel strands in the actual use process, in the transportation process, the first multi-hole round anchor 2 also needs to be detached and then transported, so that the first multi-hole round anchor 2 needs to be detached and installed frequently, and in the installation process, the anchor hole in the first multi-hole round anchor 2 is required to be corresponding to the single anchor hole 9, but the detachment and installation of the existing connection mode of the first multi-hole round anchor 2 and the first installation ring 26 are inconvenient, and the anchor hole is not easy to correspond.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides an iso-stress hydraulic clamping device to solve the technical problems in the background art.

The utility model provides an equal-stress hydraulic pressure holding device, which comprises a mounting frame, a first mounting ring and a second mounting ring which are respectively arranged at two end parts of the mounting frame, and a first multi-hole round anchor arranged on the first mounting ring, wherein the outer peripheral surface of the first multi-hole round anchor is provided with at least one strip-shaped boss, the inner peripheral surface of the first mounting ring is provided with an inserting groove which is matched with the strip-shaped boss in an inserting way, the inserting groove extends from the first end of the first mounting ring, which is far away from the second mounting ring, to the second end, which is close to the second mounting ring, one end of the inserting groove, which is close to the second end, is provided with a first limiting surface, the inside of the inserting groove is provided with a second limiting surface, the second limiting surface is configured to be capable of sliding along the direction which is vertically arranged in the length direction of the inserting groove, and when the strip-shaped boss is inserted into the inserting groove, and two ends of the strip-shaped boss are respectively abutted against the first limiting surface and the second limiting surface.

Furthermore, a guide through hole matched with the insertion groove is formed in the side wall of the first mounting ring, an insertion column is arranged in the guide through hole in a guiding mode, the axis of the guide through hole is perpendicular to the length direction of the insertion groove, and the second limiting surface is the side face of the insertion column.

Furthermore, the inserting column is in non-rotation fit with the guide through hole, a first guide inclined plane is arranged at the end part of the strip-shaped boss matched with the first limiting surface, and a second guide inclined plane matched with the first guide inclined plane is arranged at the end part of the inserting column.

Furthermore, a cylindrical enclosing plate is arranged on the outer peripheral face of the first mounting ring around the guide through hole, an end cover is arranged at the end of the cylindrical enclosing plate, a limiting plate is arranged on the insertion column, a first pressure spring is arranged between the limiting plate and the end cover, a pull rod penetrates through the end cover, and the pull rod is connected with the insertion column.

Further, the end cover and the cylindrical enclosing plate are detachably connected through threads.

Furthermore, a second guide hole which is perpendicular to and intersected with the guide through hole is further formed in the side wall of the first mounting ring, a limiting column is arranged in the second guide hole in a guiding mode, an insertion hole matched with the limiting column is formed in the side wall of the insertion column, the end portion of the limiting column can extend out of the second guide hole, and when the limiting column is inserted into the insertion hole, the end portion of the insertion column is located outside the insertion groove.

Further, the bar-shaped bosses are provided with a plurality of bars, the bar-shaped bosses surround the axis of the first porous round anchor and are arranged at intervals, and the inserting grooves are matched with a plurality of bars.

The equal-stress hydraulic clamping device provided by the utility model has the following beneficial effects:

1. when using, can peg graft through inserting groove and bar boss looks adaptation, only need to correspond the grafting with the inserting groove with the bar boss when using, can guarantee that the anchor eye on the first porous round anchor is corresponding with single anchor eye, and set up the spacing face of second through sliding, when installing first porous round anchor to first mounting ring in, can be earlier with the spacing face roll-off inserting groove of second, then peg graft the bar boss in the inserting groove, then slide the spacing face of second to the inserting groove in spacing to the bar boss, make the bar boss spacing to between first spacing face and the spacing face of second, provide the holding power through first spacing face and the spacing face of second when using, thereby be convenient for to the installation and the dismantlement of first porous round anchor.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a hydraulic clamping device for adjusting the tension of a steel strand in the background art.

Fig. 2 is a schematic structural diagram of components in an iso-stress hydraulic clamping device provided by the utility model.

Fig. 3 is a schematic cross-sectional view taken along line a-a in fig. 2.

Fig. 4 is a partially enlarged structural diagram at B.

Fig. 5 is a partially enlarged structural view at C.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that, referring to fig. 1, for a hydraulic clamping device for adjusting the tension of a steel strand in the background art, it should be noted that the working principle of an equal-stress hydraulic clamping device in the present invention is the same as that of a hydraulic clamping device for adjusting the tension of a steel strand in the background art, the overall structure is basically the same, and the difference of the overall structure is that the structures of the connection portions of the first mounting ring 26 and the first porous circular anchor 2 are different; the utility model also provides an improvement point, which is characterized in that: the utility model provides an isostress hydraulic pressure holding device, as a specific implementation manner, referring to fig. 2-5, the device comprises a mounting frame 1, a first mounting ring 26 and a second mounting ring 27 respectively arranged at two end portions of the mounting frame 1, and a first porous round anchor 2 arranged on the first mounting ring 26, wherein at least one strip-shaped boss 2a is arranged on the outer circumferential surface of the first porous round anchor 2, an insertion groove 26a in insertion fit with the strip-shaped boss 2a is arranged on the inner circumferential surface of the first mounting ring 26, the insertion groove 26a extends from a first end of the first mounting ring 26 far away from the second mounting ring 27 to a second end close to the second mounting ring 27, a first limiting surface 261 is arranged at one end of the insertion groove 26a close to the second end, a second limiting surface 262 is arranged in the insertion groove 26a towards the first limiting surface 261, the second limiting surface 262 is configured to be able to slide along a direction perpendicular to the length direction of the insertion groove 26a, and when the bar-shaped boss 2a is inserted into the insertion groove 26a, two ends of the bar-shaped boss 2a are respectively abutted against the first limiting surface 262 and the second limiting surface 262.

Through this kind of mode of setting up, can peg graft through inserting groove 26a and bar boss 2a looks adaptation, only need correspond grafting with bar boss 2a and inserting groove 26a when using, can guarantee that the anchor eye on the first porous round anchor is corresponding with single anchor hole 9, and set up the spacing face of second through sliding, when installing first porous round anchor to first collar 26 in, can be earlier with the spacing face roll-off inserting groove of second, then peg graft bar boss 2a in inserting groove 26a, then slide the spacing face of second to the inserting inslot carry on spacingly to the bar boss, make the bar boss spacing to between first spacing face and the spacing face of second, provide the holding power through first spacing face and the spacing face of second when using, thereby be convenient for to the installation and the dismantlement of first porous round anchor.

Further, as a preferred embodiment, referring to fig. 2 to 4, a guide through hole 263 adapted to the insertion groove 26a is provided on a side wall of the first mounting ring 26, an insertion column 264 is provided in the guide through hole 263 in a guiding manner, an axis of the guide through hole 263 is perpendicular to a length direction of the insertion groove 26a, and the second limiting surface 262 is a side surface of the insertion column. Specifically, the guide through hole can be a through hole with a rectangular cross section, and the inserting column is a rectangular column, so that the side surface of the inserting column facing the first limiting surface is set as a second limiting surface.

Further, as a specific implementation manner, referring to fig. 4, the insertion column 264 is in non-rotational fit with the guide through hole 263, a first guide inclined surface 2620 is disposed at an end portion of the strip-shaped boss 2a adapted to the first limiting surface 262, and a second guide inclined surface 2640 adapted to the first guide inclined surface 2620 is disposed at an end portion of the insertion column 264. The strip-shaped projection 2a can be conveniently inserted into the insertion groove 26 by providing the first guide inclined surface 2620 and the second guide inclined surface 2640.

Further, as a specific embodiment, referring to fig. 4, a cylindrical surrounding plate 265 is disposed on the outer circumferential surface of the first mounting ring 26 around the guide through hole 263, an end cap 266 is disposed at an end of the cylindrical surrounding plate, a limiting plate 2641 is disposed on the insertion column 264, a first compression spring 267 is disposed between the limiting plate and the end cap, and a pull rod 268 is disposed on the end cap in a penetrating manner and connected to the insertion column 264. By the arrangement mode, the position of the inserting column 264 can be kept through the pressure of the first pressure spring, the end part of the inserting column is prevented from sliding out of the inserting groove, and the strip-shaped boss 2a is effectively limited; when the first multi-hole round anchor needs to be disassembled, the inserting column can be pulled out only by pulling the pull rod 268, and then the disassembling can be carried out.

Further, in a preferred embodiment, the end cap is removably attached to the cylindrical collar 265 by threads.

Further, as a specific embodiment, referring to fig. 4 and 5, a second guide hole 269 perpendicular to and intersecting with the guide through hole 263 is further disposed on a side wall of the first mounting ring 26, a limit post 270 is disposed in the second guide hole 269 in a guiding manner, an insertion hole 2643 adapted to the limit post is disposed on a side wall of the insertion post 264, an end of the limit post can extend out of the second guide hole 269, and when the limit post is inserted into the insertion hole, the end of the insertion post 264 is located outside the insertion groove 26 a. Specifically, through setting up spacing post 270, can pull out inserting groove 26a through the tip that pulling pull rod 268 will peg graft post 264 earlier when dismantling first porous round anchor, make the spliced eye 270 aim at peg 270, can carry out spacing cooperation to the peg with spacing post plug-in grafting downthehole to be convenient for to the dismantlement and the installation of first porous round anchor.

Preferably, referring to fig. 5, an end portion of the second guide hole 269 is provided with a step hole 2691 by expanding outward, an end portion of the step hole 2691 is provided with a second end cap 2702, a portion of the limiting column 270 located in the step hole 2691 is provided with a second limiting plate 2701, and a second pressure spring 2703 is provided between the second limiting plate and the second end cap, by this arrangement, when in use, only the pull rod 268 needs to be pulled to pull the end portion of the inserting column 264 out of the inserting groove 26a, and when the limiting hole 270 is aligned with the limiting column 270, the limiting column is automatically pushed to be inserted into the inserting hole to limit under the action of the elastic force of the second pressure spring; the limit post 270 is pulled out against the elastic force of the second compression spring, so that the dismantling post is pulled out from the insertion hole, and the insertion post can enter the insertion groove 26a under the elastic force of the first compression spring 267, so that the use is more convenient.

Further, as a preferred embodiment, referring to fig. 1, the strip-shaped bosses 2a are provided in plurality, the strip-shaped bosses 2a are evenly spaced around the axis of the first multi-hole round anchor 2, and the insertion grooves 26a are adapted in plurality.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. An equal-stress hydraulic pressure clamping device comprises a mounting frame (1), a first mounting ring (26) and a second mounting ring (27) which are respectively arranged at two end parts of the mounting frame (1), and a first porous round anchor (2) arranged on the first mounting ring (26), and is characterized in that at least one strip-shaped boss (2 a) is arranged on the outer peripheral surface of the first porous round anchor (2), an insertion groove (26 a) which is in insertion fit with the strip-shaped boss (2 a) is arranged on the inner peripheral surface of the first mounting ring (26), the insertion groove (26 a) extends from the first end of the first mounting ring (26) far away from the second mounting ring (27) to the second end of the second mounting ring (27), a first limiting surface (261) is arranged at one end of the insertion groove (26 a) close to the second end, and a second limiting surface (262) is arranged in the insertion groove (26 a) towards the first limiting surface (261), the second limiting surface (262) is configured to be capable of sliding along a direction perpendicular to the length direction of the insertion groove (26 a), and when the strip-shaped boss (2 a) is inserted into the insertion groove (26 a), two ends of the strip-shaped boss (2 a) are respectively abutted against the first limiting surface (261) and the second limiting surface (262).

2. The isostatic hydraulic pressure clamping device according to claim 1, wherein a guide through hole (263) adapted to the insertion groove (26 a) is provided on a side wall of the first mounting ring (26), an insertion column (264) is provided in the guide through hole (263) in a guiding manner, an axis of the guide through hole (263) is perpendicular to a length direction of the insertion groove (26 a), and the second limiting surface (262) is a side surface of the insertion column.

3. The isostatic hydraulic pressure clamping device according to claim 2, wherein the insertion column (264) is non-rotatably fitted to the guide through hole (263), the end of the bar-shaped boss (2 a) fitted to the first position-limiting surface (261) is provided with a first guide inclined surface (2620), and the end of the insertion column (264) is provided with a second guide inclined surface (2640) fitted to the first guide inclined surface (2620).

4. The isostatic hydraulic pressure clamping device according to claim 3, wherein a cylindrical enclosing plate (265) is arranged on the outer circumferential surface of the first mounting ring (26) around the guide through hole (263), an end cover (266) is arranged at the end of the cylindrical enclosing plate, a limiting plate (2641) is arranged on the insertion column (264), a first pressure spring (267) is arranged between the limiting plate and the end cover, a pull rod (268) is arranged on the end cover in a penetrating manner, and the pull rod is connected with the insertion column (264).

5. An iso-stressed hydraulic clamping device according to claim 4, wherein the end cap is removably connected to the cylindrical shroud (265) by a screw thread.

6. The isostatic pressing hydraulic pressure clamping device according to claim 4, wherein a second guide hole (269) perpendicular to and intersecting with the guide through hole (263) is further provided in the side wall of the first mounting ring (26), a limit post (270) is provided in the second guide hole (269) in a guiding manner, an insertion hole (2643) adapted to the limit post is provided in the side wall of the insertion post (264), the end of the limit post can extend out of the second guide hole (269), and when the limit post is inserted into the insertion hole, the end of the insertion post (264) is located outside the insertion groove (26 a).

7. An equi-stress hydraulic clamping device according to any one of claims 1 to 6, wherein a plurality of strip-shaped bosses (2 a) are provided, a plurality of strip-shaped bosses (2 a) are uniformly arranged around the axis of the first porous circular anchor (2) at intervals, and a plurality of insertion grooves (26 a) are matched.