CN217438719U - Simple trolley suitable for tensioning tooth block of cast-in-place box girder box chamber - Google Patents
Simple trolley suitable for tensioning tooth block of cast-in-place box girder box chamber Download PDFInfo
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- CN217438719U CN217438719U CN202220149782.5U CN202220149782U CN217438719U CN 217438719 U CN217438719 U CN 217438719U CN 202220149782 U CN202220149782 U CN 202220149782U CN 217438719 U CN217438719 U CN 217438719U
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Abstract
The utility model provides a simple and easy platform truck suitable for cast-in-place case roof beam case tooth piece stretch-draw, include: a base, under which rollers are arranged for supporting the hoist; the lower end of the supporting column is connected with the base; the cross bar is connected with the upper end of the support column; the first fixing piece is slidably arranged on the supporting rod and used for hanging the hoist crane; and the second fixing piece is used for arranging the movable pulley. Through the utility model discloses can solve traditional stretch-draw technology waste time, hard, the uncontrollable scheduling problem of stretch-draw quality, reduce the construction cost of stretch-draw operation by a wide margin, improve the quality and the efficiency of construction that the block prestress of case indoor tooth was stretched and is drawn.
Description
Technical Field
The utility model belongs to the technical field of the construction technology and specifically relates to a simple and easy platform truck suitable for cast-in-place case roof beam case tooth piece stretch-draw.
Background
In the current bridge construction, especially in the construction of a multi-line super-large bridge, 16-connection cast-in-place continuous beams and 34-hole cast-in-place simply-supported beams are usually included, the cast-in-place beams are all constructed by adopting a disc buckle type full-hall support method and are designed into post-tensioned prestressed concrete continuous box beams, and the structural forms of the beam comprise a single-box single-chamber, a single-box double-chamber, a single-box three-chamber, a single-chamber variable-chamber and the like. The roof sawtooth blocks and the bottom plate sawtooth blocks are designed in the box chamber, when the concrete strength and the elastic modulus age meet the requirements, steel bundle tensioning of the sawtooth blocks needs to be operated in the box chamber according to the traditional process, accurate alignment of a tensioning jack for tensioning the steel bundle becomes a key for guaranteeing construction quality, but accurate alignment of the tensioning jack is difficult to achieve at present, and due to the fact that the tensioning jack is heavy, labor and time are consumed for installation and movement, safety and quality accuracy of tensioning construction are difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
The utility model provides a simple and easy platform truck suitable for cast-in-place case roof beam case tooth piece stretch-draw can solve traditional stretch-draw technology waste time and energy, the uncontrollable scheduling problem of stretch-draw quality, has reduced the construction cost of stretch-draw operation by a wide margin, improves the quality and the efficiency of construction that the tooth piece prestressing force was stretched and is drawn in the case room.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model provides a simple and easy platform truck suitable for cast-in-place box girder box room tooth piece stretch-draw, includes:
a base, under which rollers are arranged for supporting the hoist;
the lower end of the supporting column is connected with the base;
the cross bar is connected with the upper end of the support column;
the first fixing piece is slidably arranged on the cross rod and used for hanging the hoist crane;
the second fixed piece is used for arranging the movable pulley;
the cross rod is used for arranging a first fixing piece and a second fixing piece.
Preferably, the upper portion of the supporting column is provided with one end of a first inclined rod, and the other end of the first inclined rod is connected with the cross rod.
Preferably, the lower part of the supporting column is provided with one end of a second inclined rod, and the other end of the second inclined rod is connected with the cross rod.
Preferably, the second fixing part and the base are respectively located at opposite sides of the supporting column.
Preferably, the number of the support columns is two, and the support columns are connected with the base in a triangular mode.
When the tensioning jack is used, the movable pulley is hung on the second fixing piece, the hoist crane is hung on the first fixing piece, the winch is placed on the base, the steel wire rope bypasses the movable pulley, the front end of the tensioning jack is hung, the rear end of the tensioning jack is hung on the hoist crane, the tensioning jack is lifted to a certain height through the winch, and the lifting is stopped when the tensioning anchor opening position is reached. And (4) tightening the hoist crane to enable the position and the height of the tensioning jack to be approximately consistent with the space height of the prestressed duct, installing a limiting plate at the front end of the tensioning jack, and determining that the position of the clamping groove is matched with the working anchor. The front end of the tensioning jack is lifted by a steel wire rope until the front end of the tensioning jack is closely attached to the working anchor, the anchor backing plate and the limiting plate, and the corresponding clamping grooves meet the standard requirements. And then installing a tool anchor and a tool clamping piece at the rear end of the tensioning jack, after the tool anchor and the tool clamping piece are installed and fastened, adopting a suspended hoist to lift or lower a hoist chain block, and matching the movable pulley and the hoist to use, so that the tensioning jack can be accurately aligned, the rear end of the tensioning jack is positioned on the same axis with an anchor (comprising a working anchor and an anchor backing plate set) and a pore channel, and the construction quality during tensioning is ensured.
The utility model has the advantages of it is following: (1) because the movable pulley and the hoist crane are suspended on a cross rod, three concentric stretching, namely three concentric jacks, an anchorage device and a prestressed duct, can be ensured, the accurate alignment of the jacks during the stretching operation is realized, and the stretching quality is ensured. (2) The position of the tensioning jack can be quickly adjusted through a hoist crane chain block and a winch on the simple trolley, and particularly, the operation efficiency of the tensioning jack from one box chamber to another box chamber is greatly improved during multi-span cast-in-place beam tensioning operation. (3) Adopt the utility model discloses a simple and easy platform truck has solved traditional stretch-draw technology waste time and energy, the uncontrollable scheduling problem of stretch-draw quality, has reduced stretch-draw operation's construction cost by a wide margin, has improved the quality and the efficiency of construction that the block prestressing force was stretched and is drawn in the case room.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic top view of the simple cart in fig. 1.
Fig. 3 is a schematic right-view structural view of the simple trolley in fig. 1.
In the figure, a base 1, a winch 2, a first inclined rod 3, a cross rod 4, a first fixing piece 5, a second fixing piece 6, a movable pulley 7, a hoist crane 8, a tensioning jack 9, a support column 10, a second inclined rod 11 and a roller 12.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper" and "lower" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The utility model provides a simple and easy platform truck suitable for cast-in-place box girder box room tooth piece stretch-draw, as shown in fig. 1~3, includes base 1, support column 10, horizontal pole 4, first mounting 5 and second mounting 6. Wherein: the lower surface of the base 1 is provided with a roller 12 which is used for supporting the hoist 2, so that the whole simple trolley can move, and the hoist 2 supported by the simple trolley can also move; the lower end of the supporting column 10 is connected with the base 1, namely the supporting column 10 is fixed on the base 1; the cross bar 4 is connected with the upper end of the support pillar 10, namely the support pillar 10 fixes the cross bar 4, and the cross bar 4 is parallel to the base 1; the first fixing piece 5 is slidably arranged on the cross rod 4 and used for hanging a hoist crane 8; second mounting 6 for set up movable pulley 7, horizontal pole 4 is used for setting up first mounting 5 and second mounting 6, and first mounting can adopt the lifting hook, and the second mounting can select for use the rope of tying up on horizontal pole 4, also can select for use the lifting hook, can hang movable pulley 7 can, and this movable pulley has hoist engine 2's wire rope to pass. Generally, the cross bar 4 is made of i-steel, a groove in the middle of the i-steel can provide a track for the movement of the first fixing member 5 and/or the second fixing member 6, a buckle structure which can be matched with the movement on the track is arranged on the upper portion of the first fixing member 5 to realize the sliding on the cross bar 4, which is the prior art, and the detailed description is omitted here, the second fixing member can be made of a rope, or the same structure as the first fixing member 5, and if the same structure as the first fixing member 5 is adopted, the rope is hung below the hook to arrange the movable pulley 7.
Preferably, the upper portion of the support column 10 is provided with one end of the first inclined rod 3, the other end of the first inclined rod 3 is connected with the cross rod 4, and a triangular connection relationship is formed on the upper portion of the support column 10 by the arrangement of the first inclined rod 3, so that the stability of the upper connection of the support column 10 is ensured.
Preferably, one end of a second diagonal rod 11 is arranged at the lower part of the support column 10, the other end of the second diagonal rod 11 is connected with the cross rod 4, and a triangular connection relationship is formed at the lower part of the support column 10 by arranging the second diagonal rod 11, so that the stability of the lower connection of the support column 10 is ensured.
Preferably, the positions of the second fixing member 6 and the base 1 for supporting the winch 2 are respectively located on opposite sides of the supporting column 10, specifically, the steel wire rope of the winch 2 passes through the movable pulley 7, the free end of the steel wire rope is connected with one end of the tensioning jack, in order to prevent the base from blocking the steel wire rope, the extending direction of the cross bar 4 and the direction of the base are respectively located on opposite sides of the supporting column 10, so that the steel wire rope of the winch 2 and the hoist 8 can both pull the tensioning jack to be free from blocking, the operation is convenient, and the balance of two sides of the simple trolley is also favorably maintained.
Preferably, the support columns 10 are arranged in two numbers and are connected with the base 1 in a triangular mode, namely, as shown in a combined mode in fig. 3, the upper ends of the support columns 10 are respectively fixed to two sides of the cross rod, the lower ends of the support columns 10 are fixed to the base, the distance between the upper ends of the support columns is larger than that between the upper ends of the support columns, and the middle portions of the two support columns 10 are connected through connecting rods, so that the support strength and the connection stability are guaranteed better. The support post 10 is typically made of channel steel.
When the tensioning jack is used, the movable pulley 7 is hung on the second fixing piece 6, the hoist crane 8 is hung on the first fixing piece 5, the winch 2 is placed on the base 1, the steel wire rope bypasses the movable pulley 7 to suspend the front end of the tensioning jack 9, the rear end of the tensioning jack 9 is suspended by the winch 2, the tensioning jack 9 is lifted to a certain height through the winch 2, and the lifting is stopped when the tensioning anchor opening position is reached. And (3) tightening the hoist crane 8 to enable the position and the height of the tensioning jack 9 to be approximately consistent with the height of the prestressed duct space, installing a limiting plate at the front end of the tensioning jack 9, and determining that the position of the clamping groove is matched with the working anchor. The front end of the tensioning jack 9 is lifted by a steel wire rope until the front end of the tensioning jack 9 is closely attached to the working anchor, the anchor backing plate and the limiting plate, and the corresponding clamping grooves meet the standard requirements. Then, tool anchors and tool clamping pieces are installed at the rear ends of the tensioning jacks 9, after the tensioning jacks are installed and fastened, the hoist crane 8 is suspended in a hanging mode, hoist crane chain blocks are lifted or lowered, the movable pulleys and the hoist crane 8 are used in a matched mode, the tensioning jacks 9 can be accurately aligned, the rear ends of the tensioning jacks 9, the anchor devices and the pore channels are located on the same axis, and construction quality during tensioning is guaranteed.
Claims (5)
1. The utility model provides a simple and easy platform truck suitable for cast-in-place box girder box room tooth piece stretch-draw which characterized in that includes:
a base, under which rollers are arranged for supporting the hoist;
the lower end of the supporting column is connected with the base;
the cross bar is connected with the upper end of the support column;
the first fixing piece is slidably arranged on the cross rod and used for hanging the hoist crane;
the second fixing piece is used for arranging the movable pulley;
the cross rod is used for arranging a first fixing piece and a second fixing piece.
2. The simple trolley suitable for tensioning the tooth block of the cast-in-place box girder box chamber according to claim 1, is characterized in that:
the support column upper portion is provided with the one end of first down tube, and the other end and the horizontal pole of first down tube are connected.
3. The simple trolley suitable for tensioning the tooth block of the cast-in-place box girder box chamber according to claim 1, is characterized in that:
the support column lower part is provided with the one end of second down tube, and the other end and the horizontal pole of second down tube are connected.
4. The simple trolley suitable for tensioning the tooth block of the cast-in-place box girder box chamber according to claim 1, is characterized in that:
the second fixing piece and the base are respectively positioned on the opposite sides of the supporting column at the position for supporting the winch.
5. The simple trolley suitable for tensioning the tooth block of the cast-in-place box girder box chamber according to claim 1, is characterized in that:
the support column is provided with two, is triangle-shaped with the base and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220149782.5U CN217438719U (en) | 2022-01-20 | 2022-01-20 | Simple trolley suitable for tensioning tooth block of cast-in-place box girder box chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220149782.5U CN217438719U (en) | 2022-01-20 | 2022-01-20 | Simple trolley suitable for tensioning tooth block of cast-in-place box girder box chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217438719U true CN217438719U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220149782.5U Active CN217438719U (en) | 2022-01-20 | 2022-01-20 | Simple trolley suitable for tensioning tooth block of cast-in-place box girder box chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217438719U (en) |
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2022
- 2022-01-20 CN CN202220149782.5U patent/CN217438719U/en active Active
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