Prestress tensioning device for bridge structure

Abstract

The prestress tensioning device for the bridge structure comprises a sleeve oil cylinder and a sleeve piston, the sleeve piston is movably embedded in the sleeve oil cylinder, and connectors are fixedly installed on the portions, close to the upper portion and the lower portion, of the curved surface of the sleeve oil cylinder. A hanging ring is fixedly installed on the curved surface of the sleeve oil cylinder and located on one side of the connector, and a movable ring is movably arranged on the curved surface of the sleeve oil cylinder and located above the curved surface in a sleeving mode. According to the prestress tensioning device for the bridge structure, in the process that the sleeve piston retracts into the sleeve oil cylinder, the movable ring can be rotated, and the rotating movable ring brushes and sweeps the sleeve piston and the sleeve oil cylinder through the brush plate of the brush sweeping piece; in this way, accumulated dust scraped and swept by the sleeve oil cylinder from the surface of the sleeve piston can be conveniently swept away, finally, the brush plate of the brushing and sweeping piece is rotated to the position above the embedded groove, and along with retraction of the sleeve piston, the brush plate of the brushing and sweeping piece can be pressed into the embedded groove again to be stored and placed.

Description

Technical Field

[0001] The utility model relates to the field of prestressed tensioning devices, in particular to a prestressed tensioning device for a bridge structure. Background Art

[0002] Prestressing is to apply prestress in the concrete components of the bridge in advance, so that the prestressed components are subjected to compressive stress, thereby causing them to undergo a certain deformation to cope with the load borne by the beam-type components themselves. The device for applying prestress is the tensioning jack.

[0003] When the tension jack is in use, its sleeve piston will expand and contract in the sleeve cylinder. When the sleeve piston extends out of the sleeve cylinder, dust is easily adhered to the curved surface of the sleeve piston. When the sleeve piston is retracted into the sleeve cylinder, the dust on the curved surface of the sleeve piston will be scraped and gathered together by the sleeve cylinder, and the gathered dust cannot be conveniently cleaned. Utility Model Content

[0004] The main purpose of the utility model is to provide a prestressed tensioning device for a bridge structure, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A prestressed tensioning device for a bridge structure comprises a sleeve cylinder and a sleeve piston, wherein the sleeve piston is movably embedded inside the sleeve cylinder, a connecting head is fixedly installed on the curved surface of the sleeve cylinder near the top and the bottom, a lifting ring is fixedly installed on the curved surface of the sleeve cylinder and located on one side of the connecting head, a movable ring is movably sleeved on the curved surface of the sleeve cylinder and located on the top, and a brush is movably installed on the upper surface of the movable ring.

[0007] Preferably, an embedding groove is provided on an upper surface of one side of the sleeve oil cylinder, and an annular groove is provided on the curved surface of the sleeve oil cylinder near the top, and the annular groove is connected to the embedding groove.

[0008] Preferably, a snap ring is fixedly mounted on the inner surface of the movable ring, a groove is provided on the upper surface of one side of the movable ring, and a stop groove is provided on the lower surface of the groove.

[0009] Preferably, the brush sweeping member includes a brush plate, an insert rod, a stop block and a spring, the insert rod is fixedly mounted on the lower surface of one end of the brush plate, the lower end of the insert rod passes through the groove and is embedded in the stop groove, the stop block is fixedly mounted on the lower end surface of the insert rod, and a spring is sleeved on the surface of the insert rod located inside the groove.

[0010] Preferably, the snap ring is embedded in the annular snap groove, and the movable ring is movably connected to the sleeve cylinder via the snap ring.

[0011] Preferably, the brush plate is in contact with the sleeve cylinder and the sleeve piston, the lower end of the spring is fixed to the inner lower surface of the groove, and the upper end of the spring is fixed to the brush plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, by arranging the sleeve cylinder, the movable ring and the brush sweeping member in a manner that cooperates with each other, when the sleeve piston extends out from the sleeve cylinder, the brush sweeping member will lose the pressing force of the sleeve piston, and at this time the brush sweeping member will rise from the embedded groove under the pushing action of the spring, and when the sleeve piston retracts into the sleeve cylinder, the movable ring can be rotated, and the rotating movable ring uses the brush plate of the brush sweeping member to brush the sleeve piston and the sleeve cylinder, so that the sleeve cylinder can scrape away the dust accumulated on the surface of the sleeve piston, and finally the brush plate of the brush sweeping member is rotated to the top of the embedded groove, and as the sleeve piston retracts, the brush plate of the brush sweeping member will be pressed into the embedded groove again for storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall structural diagram of a prestressed tensioning device for a bridge structure of the utility model;

[0015] Figure 2 This is a partial disassembly schematic diagram of a prestressed tensioning device for a bridge structure of the utility model;

[0016] Figure 3 This is a structural diagram of a movable ring of a prestressed tensioning device for a bridge structure of the utility model;

[0017] Figure 4 The utility model discloses a structural diagram of a brush sweeping member of a prestressed tensioning device for a bridge structure.

[0018] In the figure: 1, sleeve cylinder; 101, annular groove; 102, embedded groove; 2, sleeve piston; 3, movable ring; 301, snap ring; 302, groove; 303, stop groove; 4, lifting ring; 5, connector; 6, brush sweeper; 601, brush plate; 602, plug rod; 603, stop block; 604, spring. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-4A prestressed tensioning device for a bridge structure is shown, comprising a sleeve cylinder 1 and a sleeve piston 2, wherein the sleeve piston 2 is movably embedded inside the sleeve cylinder 1, a connecting head 5 is fixedly installed on the curved surface of the sleeve cylinder 1 near the top and bottom, a lifting ring 4 is fixedly installed on the curved surface of the sleeve cylinder 1 and located on one side of the connecting head 5, a movable ring 3 is movably sleeved on the curved surface of the sleeve cylinder 1 and located on the top, and a brush sweeper 6 is movably installed on the upper surface of the movable ring 3.

[0021] An embedding groove 102 is provided on the upper surface of one side of the sleeve cylinder 1, and an annular groove 101 is provided on the curved surface of the sleeve cylinder 1 and near the top. The annular groove 101 is connected to the embedding groove 102, and the cooperation between the annular groove 101 and the snap ring 301 can assist the smooth rotation of the movable ring 3; a snap ring 301 is fixedly installed on the inner surface of the movable ring 3, a groove 302 is provided on the upper surface of one side of the movable ring 3, and a stop groove 303 is provided on the lower surface of the groove 302; the brush sweeping member 6 includes a brush plate 601, a plug rod 602, a stop block 603 and a spring 604, and a plug rod 602 is fixedly installed on the lower surface of one end of the brush plate 601, and the plug rod 602 The lower end of the rod 602 passes through the groove 302 and is embedded in the stop groove 303. The stop block 603 is fixedly installed on the lower end surface of the rod 602. The surface of the rod 602 located inside the groove 302 is sleeved with a spring 604, and the spring 604 has an upward thrust on the brush plate 601; the retaining ring 301 is embedded in the annular retaining groove 101, and the movable ring 3 is movably connected to the sleeve cylinder 1 through the retaining ring 301; the brush plate 601 is in contact with the sleeve cylinder 1 and the sleeve piston 2, the lower end of the spring 604 is fixed to the inner lower surface of the groove 302, and the upper end of the spring 604 is fixed to the brush plate 601, and the brush plate 601 can brush the upper surface of the sleeve cylinder 1.

[0022] It should be noted that the utility model is a prestressed tensioning device for a bridge structure. When in use, after the sleeve piston 2 extends out from the sleeve cylinder 1, the brush sweeper 6 will lose the pressing force of the sleeve piston 2. At this time, the brush sweeper 6 will rise from the embedded groove 102 under the pushing action of the spring 604. When the sleeve piston 2 retracts into the sleeve cylinder 1, the movable ring 3 can be rotated. The rotating movable ring 3 uses the brush plate 601 of the brush sweeper 6 to brush the sleeve piston 2 and the sleeve cylinder 1. In this way, the sleeve cylinder 1 can conveniently clean up the dust accumulated on the surface of the sleeve piston 2. Finally, the movable ring 3 is rotated to make the brush plate 601 of the brush sweeper 6 rotate to the top of the embedded groove 102. As the sleeve piston 2 retracts, the brush plate 601 of the brush sweeper 6 will be pressed into the embedded groove 102 again for storage.

[0023] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A prestressed tensioning device for a bridge structure, characterized in that: The invention comprises a sleeve oil cylinder (1) and a sleeve piston (2), wherein the sleeve oil cylinder (1) is movably embedded with the sleeve piston (2), a connecting head (5) is fixedly installed on the curved surface of the sleeve oil cylinder (1) near the top and the bottom, a lifting ring (4) is fixedly installed on the curved surface of the sleeve oil cylinder (1) and located on one side of the connecting head (5), a movable ring (3) is movably sleeved on the curved surface of the sleeve oil cylinder (1) and located on the top, and a brush sweeping member (6) is movably installed on the upper surface of the movable ring (3).

2. A prestressed tensioning device for a bridge structure according to claim 1, characterized in that: An embedding groove (102) is provided on the upper surface of one side of the sleeve oil cylinder (1), and an annular clamping groove (101) is provided on the curved surface of the sleeve oil cylinder (1) near the top, wherein the annular clamping groove (101) is communicated with the embedding groove (102).

3. The prestressed tensioning device for a bridge structure according to claim 2, characterized in that: A snap ring (301) is fixedly mounted on the inner surface of the movable ring (3), a groove (302) is provided on the upper surface of one side of the movable ring (3), and a stop groove (303) is provided on the lower surface of the groove (302).

4. A prestressed tensioning device for a bridge structure according to claim 3, characterized in that: The brush sweeping member (6) comprises a brush plate (601), an insertion rod (602), a stop block (603) and a spring (604); the insertion rod (602) is fixedly mounted on the lower surface of one end of the brush plate (601); the lower end of the insertion rod (602) passes through the groove (302) and is embedded in the stop groove (303); the stop block (603) is fixedly mounted on the lower end surface of the insertion rod (602); and the surface of the insertion rod (602) located inside the groove (302) is sleeved with a spring (604).

5. The prestressed tensioning device for a bridge structure according to claim 4, characterized in that: The clamping ring (301) is embedded in the annular clamping groove (101), and the movable ring (3) is movably connected to the sleeve cylinder (1) via the clamping ring (301).

6. The prestressed tensioning device for a bridge structure according to claim 5, characterized in that: The brush plate (601) is in contact with the sleeve cylinder (1) and the sleeve piston (2), the lower end of the spring (604) is fixed to the inner lower surface of the groove (302), and the upper end of the spring (604) is fixed to the brush plate (601).

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