CN222410689U - Prefabricated box girder lifting appliance - Google Patents
Prefabricated box girder lifting appliance Download PDFInfo
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- CN222410689U CN222410689U CN202420406779.6U CN202420406779U CN222410689U CN 222410689 U CN222410689 U CN 222410689U CN 202420406779 U CN202420406779 U CN 202420406779U CN 222410689 U CN222410689 U CN 222410689U
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- lifting appliance
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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Abstract
本申请公开了一种预制箱梁吊具，涉及预制箱梁安装的技术领域，其包括主吊具、钢绳挂载装置以及两个副吊具，所述副吊具包括固定板、安装于固定板一侧的延伸板、转动连接于延伸板的螺杆以及安装于螺杆顶部的第一手轮，所述主吊具的底部开设有滑槽，所述滑槽内固接有导杆以及转动连接有双螺纹丝杠，所述主吊具上安装有用于驱动双螺纹丝杠转动的驱动组件；两个所述副吊具的顶部均设置有滑板，两个所述滑板分别滑移连接于导杆的两端，并且两个所述滑板分别螺纹连接于双螺纹丝杠的两端。本申请便于对两个副吊具之间的距离进行调整。
The present application discloses a prefabricated box girder hanger, which relates to the technical field of prefabricated box girder installation, and includes a main hanger, a steel rope mounting device, and two auxiliary hangers, wherein the auxiliary hanger includes a fixed plate, an extension plate installed on one side of the fixed plate, a screw rotatably connected to the extension plate, and a first hand wheel installed on the top of the screw, a slide groove is provided at the bottom of the main hanger, a guide rod is fixed in the slide groove, and a double-threaded lead screw is rotatably connected, and a driving assembly for driving the double-threaded lead screw to rotate is installed on the main hanger; a slide plate is provided on the top of the two auxiliary hangers, and the two slide plates are respectively slidably connected to the two ends of the guide rod, and the two slide plates are respectively threadedly connected to the two ends of the double-threaded lead screw. The present application facilitates the adjustment of the distance between the two auxiliary hangers.
Description
Technical Field
The application relates to the technical field of precast box girder installation, in particular to a precast box girder lifting appliance.
Background
At present, the bridge engineering can use prefabricated box girder, and prefabricated box girder basic structure includes the prefabricated pedestal of lower part and upper portion's box girder roof, and during the bridge construction, need use lifting device to hoist and mount the box girder and lay on the pier.
The related art can refer to the Chinese patent of patent publication No. CN205257769U, which discloses a prefabricated box girder sling, comprising a main sling, wherein steel rope mounting devices are respectively arranged at the bottoms of two ends of the main sling, two auxiliary slings are arranged at the bottoms of the main sling, the auxiliary slings are positioned between the steel rope mounting devices, each auxiliary sling comprises a connecting rod connected with the box girder, and the axial direction of the connecting rod is vertical.
However, it is inconvenient to adjust the distance between the two auxiliary spreaders, so that when the positions of the mounting holes on the box girder are slightly deviated, the connecting rod is inconvenient to connect with the box girder.
Disclosure of utility model
The application provides a prefabricated box girder lifting appliance, which is convenient for adjusting the distance between two auxiliary lifting appliances, and adopts the following technical scheme:
The utility model provides a prefabricated box girder hoist, includes main hoist, steel cable mounting means and two vice hoists, vice hoist includes the fixed plate, installs in extension board, rotation in extension board's screw rod and install in the first hand wheel at screw rod top of extension board in fixed plate one side, the spout has been seted up to the bottom of main hoist, the rigid coupling has the guide arm in the spout and rotates and be connected with the double-thread screw, install on the main hoist and be used for driving double-thread screw pivoted actuating assembly, two vice hoist's top all is provided with the slide, two the slide slides respectively and connects in the both ends of guide arm to two the slide is threaded connection respectively in the both ends of double-thread screw.
Preferably, the driving assembly comprises a vertical shaft rotatably connected to the top wall of the chute and a second hand wheel arranged at the top of the vertical shaft, a first bevel gear is fixedly connected to the bottom of the vertical shaft, a second bevel gear is fixedly sleeved on the side wall of the double-thread screw rod, and the first bevel gear is meshed with the second bevel gear.
Preferably, supporting mechanisms for supporting the guide rods are arranged on the side walls of the two ends of the sliding groove.
Preferably, the supporting mechanism comprises a through hole formed in the side wall of one end of the sliding groove, a vertical rod vertically sliding and connected to the through hole, and a supporting plate fixedly connected to the bottom of the vertical rod, the supporting plate is abutted to the bottom of one end of the guide rod, a buffer plate is sleeved on the top of the vertical rod, a plurality of springs are fixedly connected to the bottom of the buffer plate, one end of each spring, far away from the buffer plate, is fixedly connected to the top of the main lifting appliance, and one end of each vertical rod, far away from the supporting plate, penetrates through the buffer plate and is in threaded connection with a limit nut.
Preferably, the bottom rigid coupling of montant has the threaded rod, the screw hole has been seted up at the top of backup pad, threaded rod threaded connection is in the screw hole.
Preferably, the top rigid coupling of extension board has the extension rod, perpendicular groove that is used for supplying the extension rod to slide is seted up to the bottom of fixed plate, the locating part that is used for carrying out spacing to the extension rod is installed to the lateral wall in perpendicular groove.
Preferably, the limiting piece comprises a limiting bolt which is connected to the side wall of the vertical groove through threads, a plurality of jacks are sequentially formed in one side, close to the limiting bolt, of the extension rod along the vertical direction, and one end of the limiting bolt is inserted into the jacks.
In summary, the application has the following beneficial effects:
1. When the distance between the two auxiliary lifting appliances needs to be adjusted, the driving assembly drives the double-threaded screw rod to rotate, and the double-threaded screw rod rotates to drive the two auxiliary lifting appliances to move in opposite directions or in opposite directions, so that the distance between the two auxiliary lifting appliances can be adjusted;
2. when the double-thread screw rod needs to be driven to rotate, the vertical shaft is driven to rotate through the second hand wheel, and the vertical shaft rotates to drive the first bevel gear to rotate, the first bevel gear rotates to drive the second bevel gear to rotate, and the second bevel gear rotates to drive the double-thread screw rod to rotate;
3. When the length of the auxiliary lifting appliance is insufficient, the limit of the extension rod is released through the limit part, then the extension plate is moved to adjust the length of the auxiliary lifting appliance, and after the length of the auxiliary lifting appliance is adjusted to a proper position, the extension rod is limited through the limit part, so that the length of the auxiliary lifting appliance can be adjusted, and the screw rod is connected with the box girder conveniently.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic diagram of a structure for displaying a supporting mechanism according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of an embodiment of the present application showing a threaded rod and a threaded bore;
fig. 4 is a sectional view for showing an internal structure of a fixing plate in an embodiment of the present application.
The reference numerals are 1, a main lifting appliance, 11, a sliding chute, 12, a guide rod, 13, a double-thread screw rod, 2, a secondary lifting appliance, 21, a fixed plate, 211, a vertical groove, 22, an extension plate, 23, a screw rod, 24, a first hand wheel, 25, a sliding plate, 26, an extension rod, 261, a jack, 3, a driving component, 31, a vertical shaft, 32, a second hand wheel, 33, a first bevel gear, 34, a second bevel gear, 4, a supporting mechanism, 41, a through hole, 42, a vertical rod, 421, a threaded rod, 43, a supporting plate, 431, a threaded hole, 44, a buffer plate, 45, a spring, 46, a limit nut and 5, a limit bolt.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
The application discloses a prefabricated box girder lifting appliance, which comprises a main lifting appliance 1, a steel rope mounting device and two auxiliary lifting appliances 2, wherein each auxiliary lifting appliance 2 comprises a fixed plate 21, an extension plate 22 arranged on one side of the fixed plate 21, a screw rod 23 vertically and rotatably connected with the extension plate 22 through a bearing, and a first hand wheel 24 arranged at the top of the screw rod 23, the bottom of the main lifting appliance 1 is provided with a sliding groove 11, a guide rod 12 is horizontally fixedly connected in the sliding groove 11, a double-thread screw 13 is horizontally and rotatably connected through the bearing, a driving component 3 for driving the double-thread screw 13 to rotate is arranged on the main lifting appliance 1, sliding plates 25 are respectively arranged at the tops of the two auxiliary lifting appliances 2, the two sliding plates 25 are respectively connected with two ends of the guide rod 12 in a sliding manner, and the two sliding plates 25 are respectively connected with two ends of the double-thread screw 13 in a threaded manner. When the distance between the two auxiliary lifting appliances 2 needs to be adjusted, the driving assembly 3 drives the double-threaded screw rod 13 to rotate, and the double-threaded screw rod 13 drives the two auxiliary lifting appliances 2 to move in opposite directions or in opposite directions, so that the distance between the two auxiliary lifting appliances 2 can be adjusted, and in sum, the distance between the two auxiliary lifting appliances 2 can be adjusted conveniently by adopting the scheme.
The driving assembly 3 comprises a vertical shaft 31 vertically and rotatably connected to the top wall of the chute 11 through a bearing and a second hand wheel 32 arranged at the top of the vertical shaft 31, a first bevel gear 33 is fixedly connected to the bottom of the vertical shaft 31, a second bevel gear 34 is fixedly sleeved on the side wall of the double-threaded screw rod 13, and the first bevel gear 33 is meshed with the second bevel gear 34. When the double-threaded screw rod 13 needs to be driven to rotate, the vertical shaft 31 is driven to rotate through the second hand wheel 32, the vertical shaft 31 rotates to drive the first bevel gear 33 to rotate, the first bevel gear 33 rotates to drive the second bevel gear 34 to rotate, the second bevel gear 34 rotates to drive the double-threaded screw rod 13 to rotate, and the driving assembly 3 is arranged to drive the double-threaded screw rod 13 to rotate conveniently.
The supporting mechanisms 4 for supporting the guide rods 12 are arranged on the side walls of the two ends of the sliding chute 11.
The supporting mechanism 4 comprises a through hole 41 vertically formed in the side wall of one end of the chute 11, a vertical rod 42 vertically sliding and connected to the through hole 41 and a supporting plate 43 fixedly connected to the bottom of the vertical rod 42, the supporting plate 43 is abutted to the bottom of one end of the guide rod 12, a buffer plate 44 is sleeved on the top of the vertical rod 42, a plurality of springs 45 are vertically fixedly connected to the bottom of the buffer plate 44, one end, away from the buffer plate 44, of each spring 45 is fixedly connected to the top of the main lifting appliance 1, and one end, away from the supporting plate 43, of each vertical rod 42 is arranged through the buffer plate 44 and is in threaded connection with a limit nut 46. The support plate 43, the buffer plate 44 and the spring 45 are provided to facilitate the support of the guide rod 12.
The bottom of the vertical rod 42 is fixedly connected with a threaded rod 421, a threaded hole 431 is formed in the top of the supporting plate 43, and the threaded rod 421 is in threaded connection with the threaded hole 431. The threaded rod 421 and the threaded hole 431 are provided to facilitate the connection of the vertical rod 42 with the support plate 43.
The top of extension board 22 rigid coupling has extension rod 26, and vertical groove 211 that is used for supplying extension rod 26 to slide along vertical is offered to the bottom of fixed plate 21, and the locating part that is used for carrying out spacing to extension rod 26 is installed to the lateral wall of vertical groove 211. When the length of the auxiliary lifting appliance 2 is insufficient, the limit of the extension rod 26 is released through the limiting piece, then the extension plate 22 is moved to adjust the length of the auxiliary lifting appliance 2, after the length of the auxiliary lifting appliance 2 is adjusted to a proper position, the extension rod 26 is limited through the limiting piece, so that the length of the auxiliary lifting appliance 2 can be adjusted, and the screw 23 is conveniently connected with a box girder.
The limiting piece comprises a limiting bolt 5 which is connected to the side wall of the vertical groove 211 in a threaded mode, a plurality of insertion holes 261 are formed in one side, close to the limiting bolt 5, of the extending rod 26 in sequence in the vertical direction, and one end of the limiting bolt 5 is inserted into the insertion holes 261. The limiting bolt 5 and the jack 261 are arranged, so that the extending rod 26 is limited conveniently.
The working principle is that when the distance between the two auxiliary lifting slings 2 needs to be adjusted, the vertical shaft 31 is driven to rotate through the second hand wheel 32, the vertical shaft 31 rotates to drive the first bevel gear 33 to rotate, the first bevel gear 33 rotates to drive the second bevel gear 34 to rotate, the second bevel gear 34 rotates to drive the double-threaded lead screw 13 to rotate, the double-threaded lead screw 13 rotates to drive the two auxiliary lifting slings 2 to move oppositely or reversely, and therefore the distance between the two auxiliary lifting slings 2 can be adjusted.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.
Claims (4)
1. The precast box girder lifting appliance comprises a main lifting appliance (1), a steel rope mounting device and two auxiliary lifting appliances (2), wherein each auxiliary lifting appliance (2) comprises a fixed plate (21), an extension plate (22) arranged on one side of the fixed plate (21), a screw rod (23) rotationally connected to the extension plate (22) and a first hand wheel (24) arranged at the top of the screw rod (23), and the precast box girder lifting appliance is characterized in that a sliding groove (11) is formed in the bottom of the main lifting appliance (1), a guide rod (12) is fixedly connected in the sliding groove (11) and is rotationally connected with a double-threaded screw rod (13), a driving assembly (3) for driving the double-threaded screw rod (13) to rotate is arranged on the main lifting appliance (1), sliding plates (25) are arranged at the tops of the two auxiliary lifting appliances (2), the two sliding plates (25) are respectively connected to the two ends of the guide rod (12) in a sliding mode, and the two sliding plates (25) are respectively connected to the two ends of the double-threaded screw rod (13) in a threaded mode.
2. The precast box girder sling as defined in claim 1, wherein the driving assembly (3) comprises a vertical shaft (31) rotatably connected to the top wall of the chute (11) and a second hand wheel (32) mounted on the top of the vertical shaft (31), a first bevel gear (33) is fixedly connected to the bottom of the vertical shaft (31), a second bevel gear (34) is fixedly sleeved on the side wall of the double-threaded screw (13), and the first bevel gear (33) is meshed with the second bevel gear (34).
3. The precast box girder sling as defined in claim 1, wherein the top of the extension plate (22) is fixedly connected with an extension rod (26), a vertical groove (211) for sliding the extension rod (26) is formed in the bottom of the fixed plate (21), and a limiting piece for limiting the extension rod (26) is mounted on the side wall of the vertical groove (211).
4. The precast box girder sling as defined in claim 3, wherein the limiting piece comprises a limiting bolt (5) in threaded connection with the side wall of the vertical groove (211), one side, close to the limiting bolt (5), of the extension rod (26) is provided with a plurality of jacks (261) in sequence along the vertical direction, and one end of the limiting bolt (5) is inserted into the jacks (261).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420406779.6U CN222410689U (en) | 2024-03-01 | 2024-03-01 | Prefabricated box girder lifting appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420406779.6U CN222410689U (en) | 2024-03-01 | 2024-03-01 | Prefabricated box girder lifting appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222410689U true CN222410689U (en) | 2025-01-28 |
Family
ID=94357594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420406779.6U Active CN222410689U (en) | 2024-03-01 | 2024-03-01 | Prefabricated box girder lifting appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222410689U (en) |
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2024
- 2024-03-01 CN CN202420406779.6U patent/CN222410689U/en active Active
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