CN210795531U - Box girder hoisting device - Google Patents
Box girder hoisting device Download PDFInfo
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- CN210795531U CN210795531U CN201921433452.3U CN201921433452U CN210795531U CN 210795531 U CN210795531 U CN 210795531U CN 201921433452 U CN201921433452 U CN 201921433452U CN 210795531 U CN210795531 U CN 210795531U
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- 230000000694 effects Effects 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of track construction, and aims to provide a box girder hoisting device, which comprises a connecting rod, a hoisting hook and a hoisting base, wherein the hoisting hook is connected with the hoisting base, and the connecting rod is used for connecting the hoisting hook with a box girder to be hoisted; the one end of connecting rod is provided with the screw thread, the tip threaded connection of connecting rod has first movable nut, the other end of connecting rod is provided with first lug, the connecting rod includes dead lever and movable rod, the inside cavity of dead lever sets up, the one end of movable rod slides and sets up the inside of dead lever, the movable rod is located length adjustable in the dead lever. The utility model has the advantages of make things convenient for the handling case roof beam.
Description
Technical Field
The utility model relates to a track construction technical field, concretely relates to case roof beam hoist device.
Background
One kind of bridge engineering center sill, the inside is hollow, and upper portion both sides have the edge of a wing, similar case, therefore gets the name, divides single case, many casees etc.. The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-place box girder. The box girder prefabricated in the independent site can be erected after the lower project is finished by combining the bridge girder erection machine, so that the project progress can be accelerated, and the construction period can be saved; cast-in-place box girders are mostly used for large continuous bridges. The common materials are divided into two types, namely a prestressed reinforced concrete box girder and a steel box girder. The prestressed reinforced concrete box girder is constructed on site, and transverse prestress is also arranged in some cases besides longitudinal prestress; the steel box girder is generally processed in a factory and then transported to a site for installation, and has an all-steel structure and a partially reinforced concrete pavement layer. The steel box girder is also called steel plate box girder, and is a common structural form of a large-span bridge. Generally used on bridges with large span. The outer shape is like a box and is called a steel box girder.
With the continuous development of high-speed railways, the 900t box girder prefabrication construction technology is mature day by day, the box girder type is 32.6m and 24.6m, the width is generally 12m, the weight of a girder body is not more than 900t, the box girder needs to be integrally hoisted to girder transporting equipment after the prefabrication of a girder yard is finished, the box girder is transported to a girder erection site through the girder transporting equipment, and the box girder erection is finally finished; due to the reasons of huge and irregular appearance, super-large weight and the like, when the gantry crane hoists the box girder, the steel wire rope cannot be used for binding the box girder, so that the hoisting is inconvenient, and the method becomes a key for restricting hoisting and shifting of the large-tonnage box girder.
Disclosure of Invention
An object of the utility model is to provide a case roof beam hoist device has the advantage of making things convenient for handling case roof beam.
In order to achieve the above object, the utility model adopts the following technical scheme: a box girder hoisting device comprises a connecting rod, a lifting hook and a lifting seat, wherein the lifting hook is connected with the lifting seat, and the connecting rod is used for connecting the lifting hook with a box girder to be hoisted;
the one end of connecting rod is provided with the screw thread, the tip threaded connection of connecting rod has first movable nut, the other end of connecting rod is provided with first lug, the connecting rod includes dead lever and movable rod, the inside cavity of dead lever sets up, the one end of movable rod slides and sets up the inside of dead lever, the movable rod is located length adjustable in the dead lever.
Through adopting above-mentioned technical scheme, operating personnel earlier according to the length of the thickness adjustment connecting rod of treating the handling case roof beam, treat to offer the opening that supplies the connecting rod to pass on the handling case roof beam, again with first movable nut threaded connection to the connecting rod keep away from the tip of first lug on, until first movable nut with treat the handling case roof beam butt. The operator passes the lifting hook through the first lifting lug on the connecting rod, connects the lifting machine with the lifting seat, and carries out the lifting work of the box girder to be lifted, thereby achieving the effects of binding the box girder to be lifted without using a steel wire rope and conveniently lifting the box girder.
Preferably, the movable rod is a screw rod, and the inner wall of the fixed rod is provided with threads matched with the threads of the movable rod.
Through adopting above-mentioned technical scheme, operating personnel rotates the movable rod, adjusts the length that the movable rod is located the one end of dead lever to reach the length of adjustment connecting rod, match the effect that the box girder of treating the handling used of different thickness.
Preferably, the lifting hook is provided with a self-locking part, the self-locking part comprises a fixed lock rod and a movable lock rod, the fixed lock rod is arranged in a hollow manner, one end of the movable lock rod is located in the fixed lock rod, a connecting spring is arranged in the fixed lock rod and extends along the length direction of the fixed lock rod, and a lock ring for the movable lock rod to pass through is arranged at the port of the lifting hook.
Through adopting above-mentioned technical scheme, before passing first lug with the lifting hook, operating personnel presses the movable locking lever for the movable locking lever removes along the direction that is close to fixed locking lever, passes first lug with the lifting hook again. After passing first lug with the lifting hook, operating personnel loosens the movable locking rod for the movable locking rod passes the catch, seals the lifting hook, reaches the effect that reduces the condition that first lug breaks away from the lifting hook.
Preferably, one end of the fixed lock rod close to the movable lock rod is provided with a first anti-loosening plate, one end of the movable lock rod, which is located at the fixed lock rod, is provided with a second anti-loosening plate, and the diameter of the outer ring of the second anti-loosening plate is larger than that of the inner ring of the first anti-loosening plate.
By adopting the technical scheme, the effect of preventing the movable lock rod from being separated from the fixed lock rod when the movable lock rod moves towards the direction far away from the fixed lock rod is achieved.
Preferably, the one end that fixed locking lever was kept away from to the activity locking lever is provided with the anticreep piece, the cross sectional shape of anticreep piece is for falling trapezoidal, the anticreep piece includes bottom plate and two curb plates, bottom plate and activity locking lever fixed connection, two the one end of curb plate is articulated with the both ends of bottom plate respectively, all be provided with a plurality of reset spring between activity locking lever and two curb plates.
By adopting the technical scheme, when one end of the movable lock rod is taken out from the lock ring, an operator presses the two side plates in the direction close to the movable lock rod at the same time, and pushes the movable lock rod to move in the direction close to the fixed lock rod, so that the movable lock rod is separated from the lock ring. After the movable lock rod penetrates through the lock ring, an operator loosens the two side plates, so that the reset springs are in a natural state, the two side plates are abutted against the lock ring, and the effect of preventing the movable lock rod from being separated from the lock ring is achieved.
Preferably, the lifting hook is detachably connected with the lifting seat.
Through adopting above-mentioned technical scheme, when lifting hook or hanging seat damaged, operating personnel only need change the lifting hook or hanging seat of damage, needn't change the lifting hook with hanging seat together, reach the effect that reduces the maintenance cost of this device.
Preferably, the lifting hook is fixedly connected with a connecting plate, a plurality of first connecting openings are formed in the lifting seat, a plurality of second connecting openings are formed in the connecting plate, a plurality of connecting bolts are arranged between the connecting plate and the lifting seat, the connecting bolts penetrate through the first connecting openings and the second connecting openings, and one end, far away from the fixing nuts, of each connecting bolt is connected with a second movable nut in a threaded manner.
Through adopting above-mentioned technical scheme, when connecting lifting hook and hanging seat, will hang seat and connecting plate laminating for a plurality of first connection openings dock with a plurality of second connection openings respectively, and a plurality of connecting bolt of rethread connect hanging seat and connecting plate reach the effect that makes lifting hook and hanging seat detachably connect.
Preferably, a plurality of reinforcing ribs are arranged on the connecting plate.
Through adopting above-mentioned technical scheme, reach the effect that increases the intensity of connecting plate.
In conclusion, the beneficial effects of the invention are as follows:
1. the utility model has the advantages of convenient lifting of the box girder;
2. the utility model discloses a lifting hook can be dismantled with the hanging seat and be connected, and when lifting hook or hanging seat damaged, operating personnel only need change the lifting hook or the hanging seat of damage, needn't change the lifting hook with the hanging seat together, have the advantage that reduces the maintenance cost of this device.
Drawings
Fig. 1 is a partial cross-sectional view of the present invention showing a connecting rod;
fig. 2 is a schematic structural view of the lifting hook of the present invention;
fig. 3 is a cross-sectional view of the present invention showing the self-locking member;
FIG. 4 is an enlarged view of a portion A of FIG. 3;
FIG. 5 is an enlarged partial view of portion B of FIG. 4;
fig. 6 is a schematic structural view of embodiment 2 of the present invention.
In the figure, 1, connecting rod; 11. fixing the rod; 12. a movable rod; 2. a hook; 21. a connecting plate; 22. a connecting bolt; 23. a second movable nut; 24. reinforcing ribs; 3. a hanging seat; 4. a first movable nut; 5. a self-locking member; 51. a fixed lock bar; 511. a first anti-ringfall plate; 52. a movable lock lever; 521. a second anti-ring-off plate; 53. a connecting spring; 54. a locking ring; 6. a drop-off prevention member; 61. a base plate; 62. a side plate; 63. a return spring; 7. a box girder to be hoisted; 8. the first lug.
Detailed Description
The technical solution in the embodiments of the present invention is clearly and completely described below with reference to fig. 1 to 6 of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 and 2, a box girder hoisting device comprises a connecting rod 1, a lifting hook 2 and a lifting seat 3, wherein the lifting hook 2 is connected with the lifting seat 3, and the connecting rod 1 is used for connecting the lifting hook 2 and a box girder 7 to be hoisted. One end of the connecting rod 1 is provided with a thread, the end part of the connecting rod 1 is connected with a first movable nut 4 in a threaded manner, and the other end of the connecting rod 1 is provided with a first lifting lug 8. An opening for the connecting rod 1 to pass through is arranged on the box girder 7 to be hoisted.
Before carrying out handling work, operating personnel passes opening on treating handling case roof beam 7 with connecting rod 1, again with first movable nut 4 threaded connection to connecting rod 1 on keeping away from the tip of first lug 8, until first movable nut 4 and treat handling case roof beam 7 butt. The operator then passes the lifting hook 2 through the first lifting lug 8 on the connecting rod 1, connects the crane with the lifting seat 3, and carries out the lifting work of the box girder 7 to be lifted.
Referring to fig. 1, the connecting rod 1 includes a fixing rod 11 and a movable rod 12, the fixing rod 11 is hollow, the movable rod 12 is a screw rod, and a thread matching the thread of the movable rod 12 is formed on the inner wall of the fixing rod 11. An operator rotates the movable rod 12 to adjust the length of one end of the movable rod 12, which is positioned in the fixed rod 11, so that the length of the connecting rod 1 is adjusted to be matched with box girders 7 to be hoisted, which have different thicknesses, for use.
Referring to fig. 2 and 3, a self-locking part 5 is arranged on the hook 2, the self-locking part 5 includes a fixed lock rod 51 and a movable lock rod 52, the fixed lock rod 51 is arranged in a hollow manner, one end of the movable lock rod 52 is located in the fixed lock rod 51, a connecting spring 53 is arranged in the fixed lock rod 51, the connecting spring 53 extends along the length direction of the fixed lock rod 51, and a lock ring 54 for the movable lock rod 52 to pass through is arranged at a port of the hook 2. Referring to fig. 4 and 5, a first anti-trip plate 511 is disposed at an end of the fixed lock rod 51 close to the movable lock rod 52, a second anti-trip plate 521 is disposed at an end of the movable lock rod 52 located at the fixed lock rod 51, and an outer diameter of the second anti-trip plate 521 is larger than an inner diameter of the first anti-trip plate 511, so as to prevent the movable lock rod 52 from being disconnected from the fixed lock rod 51 when moving in a direction away from the fixed lock rod 51. One end of the movable lock rod 52, which is far away from the fixed lock rod 51, is provided with an anti-drop part 6, the cross-sectional shape of the anti-drop part 6 is inverted trapezoid, the anti-drop part 6 comprises a bottom plate 61 and two side plates 62, the bottom plate 61 is fixedly connected with the movable lock rod 52, one ends of the two side plates 62 are respectively hinged with two ends of the bottom plate 61, and three return springs 63 are arranged between the movable lock rod 52 and the two side plates 62. In this embodiment, the lengths of the three return springs 63 are not uniform.
Before the hook 2 passes through the first lifting lug 8, the two side plates 62 are pressed towards the direction close to the movable lock rod 52 at the same time, the movable lock rod 52 is pushed to move towards the direction close to the fixed lock rod 51, one end of the movable lock rod 52 is taken out of the lock ring 54, and then the hook 2 passes through the first lifting lug 8. After the hook 2 passes through the first lifting lug 8, the two side plates 62 are pressed simultaneously in the direction close to the movable lock rod 52, the movable lock rod 52 is pushed to move in the direction away from the fixed lock rod 51, the movable lock rod 52 passes through the lock ring 54, the hook 2 is sealed, the two side plates 62 are loosened, the six return springs 63 are all in a natural state, and the two side plates 62 are abutted against the lock ring 54 to prevent the movable lock rod 52 from being separated from the lock ring 54.
Referring to fig. 2, the lifting hook 2 is detachably connected with the lifting seat 3, the lifting hook 2 is fixedly connected with a connecting plate 21, four first connecting openings are formed in the lifting seat 3, four second connecting openings are formed in the connecting plate 21, and four connecting bolts 22 are arranged between the connecting plate 21 and the lifting seat 3. The connecting bolt 22 passes through a first connecting opening and a second connecting opening, and a second movable nut 23 is connected to one end of the connecting bolt 22 far away from the fixed nut in a threaded manner. The connecting plate 21 is provided with a reinforcing rib 24 along the periphery of the connecting plate 21. When connecting lifting hook 2 and hanging seat 3, will hang seat 3 and the laminating of connecting plate 21 for four first connection openings dock with four second connection openings respectively, and four connecting bolt 22 of rethread are connected and are hung seat 3 and connecting plate 21, and when lifting hook 2 or hanging seat 3 damaged, operating personnel only need change lifting hook 2 or hanging seat 3 that damage, needn't change lifting hook 2 and hanging seat 3 together, reduce the maintenance cost of this device.
The implementation principle of the embodiment is as follows: before carrying out the handling work, operating personnel rotates movable rod 12, adjusts the length that movable rod 12 is located the one end of dead lever 11, and the length of adjustment connecting rod 1, the thickness of matching treating handling case roof beam 7 are used, and operating personnel passes opening on treating handling case roof beam 7 with connecting rod 1, and on keeping away from the tip of first lug 8 with connecting rod 1 with first movable nut 4 threaded connection again, until first movable nut 4 with treat handling case roof beam 7 butt. The operator then passes the hook 2 through the first lifting lug 8 on the connecting rod 1, presses the two side plates 62 simultaneously in the direction close to the movable lock rod 52 before passing the hook 2 through the first lifting lug 8, pushes the movable lock rod 52 to move in the direction close to the fixed lock rod 51, takes one end of the movable lock rod 52 out of the lock ring 54, and then passes the hook 2 through the first lifting lug 8. After the hook 2 passes through the first lifting lug 8, the two side plates 62 are pressed simultaneously in the direction close to the movable lock rod 52, the movable lock rod 52 is pushed to move in the direction away from the fixed lock rod 51, the movable lock rod 52 passes through the lock ring 54, the hook 2 is sealed, the two side plates 62 are loosened, the six return springs 63 are all in a natural state, and the two side plates 62 are abutted against the lock ring 54 to prevent the movable lock rod 52 from being separated from the lock ring 54. And finally, connecting the lifting machine with the lifting seat 3 to carry out lifting work of the box girder 7 to be lifted.
Example 2
Referring to fig. 6, in the present embodiment, the hoisting device is applied to actual hoisting work. In this implementation, four hoisting devices are used, and are all connected with the crane, and the four hoisting devices are respectively installed around the box girder 7 to be hoisted.
Referring to fig. 1 and 2, a box girder hoisting device comprises a connecting rod 1, a lifting hook 2 and a lifting seat 3, wherein the lifting hook 2 is connected with the lifting seat 3, and the connecting rod 1 is used for connecting the lifting hook 2 and a box girder 7 to be hoisted. One end of the connecting rod 1 is provided with a thread, the end part of the connecting rod 1 is connected with a first movable nut 4 in a threaded manner, and the other end of the connecting rod 1 is provided with a first lifting lug 8. An opening for the connecting rod 1 to pass through is arranged on the box girder 7 to be hoisted.
Before carrying out handling work, operating personnel passes opening on treating handling case roof beam 7 with connecting rod 1, again with first movable nut 4 threaded connection to connecting rod 1 on keeping away from the tip of first lug 8, until first movable nut 4 and treat handling case roof beam 7 butt. The operator then passes the lifting hook 2 through the first lifting lug 8 on the connecting rod 1, connects the crane with the lifting seat 3, and carries out the lifting work of the box girder 7 to be lifted.
Referring to fig. 1, the connecting rod 1 includes a fixing rod 11 and a movable rod 12, the fixing rod 11 is hollow, the movable rod 12 is a screw rod, and a thread matching the thread of the movable rod 12 is formed on the inner wall of the fixing rod 11. An operator rotates the movable rod 12 to adjust the length of one end of the movable rod 12, which is positioned in the fixed rod 11, so that the length of the connecting rod 1 is adjusted to be matched with box girders 7 to be hoisted, which have different thicknesses, for use.
Referring to fig. 2 and 3, a self-locking part 5 is arranged on the hook 2, the self-locking part 5 includes a fixed lock rod 51 and a movable lock rod 52, the fixed lock rod 51 is arranged in a hollow manner, one end of the movable lock rod 52 is located in the fixed lock rod 51, a connecting spring 53 is arranged in the fixed lock rod 51, the connecting spring 53 extends along the length direction of the fixed lock rod 51, and a lock ring 54 for the movable lock rod 52 to pass through is arranged at a port of the hook 2. Referring to fig. 4 and 5, a first anti-trip plate 511 is disposed at an end of the fixed lock rod 51 close to the movable lock rod 52, a second anti-trip plate 521 is disposed at an end of the movable lock rod 52 located at the fixed lock rod 51, and an outer diameter of the second anti-trip plate 521 is larger than an inner diameter of the first anti-trip plate 511, so as to prevent the movable lock rod 52 from being disconnected from the fixed lock rod 51 when moving in a direction away from the fixed lock rod 51. One end of the movable lock rod 52, which is far away from the fixed lock rod 51, is provided with an anti-drop part 6, the cross-sectional shape of the anti-drop part 6 is inverted trapezoid, the anti-drop part 6 comprises a bottom plate 61 and two side plates 62, the bottom plate 61 is fixedly connected with the movable lock rod 52, one ends of the two side plates 62 are respectively hinged with two ends of the bottom plate 61, and three return springs 63 are arranged between the movable lock rod 52 and the two side plates 62. In this embodiment, the lengths of the three return springs 63 are not uniform.
Before the hook 2 passes through the first lifting lug 8, the two side plates 62 are pressed towards the direction close to the movable lock rod 52 at the same time, the movable lock rod 52 is pushed to move towards the direction close to the fixed lock rod 51, one end of the movable lock rod 52 is taken out of the lock ring 54, and then the hook 2 passes through the first lifting lug 8. After the hook 2 passes through the first lifting lug 8, the two side plates 62 are pressed simultaneously in the direction close to the movable lock rod 52, the movable lock rod 52 is pushed to move in the direction away from the fixed lock rod 51, the movable lock rod 52 passes through the lock ring 54, the hook 2 is sealed, the two side plates 62 are loosened, the six return springs 63 are all in a natural state, and the two side plates 62 are abutted against the lock ring 54 to prevent the movable lock rod 52 from being separated from the lock ring 54.
Referring to fig. 2, the lifting hook 2 is detachably connected with the lifting seat 3, the lifting hook 2 is fixedly connected with a connecting plate 21, four first connecting openings are formed in the lifting seat 3, four second connecting openings are formed in the connecting plate 21, and four connecting bolts 22 are arranged between the connecting plate 21 and the lifting seat 3. The connecting bolt 22 passes through a first connecting opening and a second connecting opening, and a second movable nut 23 is connected to one end of the connecting bolt 22 far away from the fixed nut in a threaded manner. The connecting plate 21 is provided with a reinforcing rib 24 along the periphery of the connecting plate 21. When connecting lifting hook 2 and hanging seat 3, will hang seat 3 and the laminating of connecting plate 21 for four first connection openings dock with four second connection openings respectively, and four connecting bolt 22 of rethread are connected and are hung seat 3 and connecting plate 21, and when lifting hook 2 or hanging seat 3 damaged, operating personnel only need change lifting hook 2 or hanging seat 3 that damage, needn't change lifting hook 2 and hanging seat 3 together, reduce the maintenance cost of this device.
The implementation principle of the embodiment is as follows: before carrying out the handling work, operating personnel rotates every hoist device's movable rod 12, adjusts the length that movable rod 12 is located the one end of dead lever 11, and the length of adjustment connecting rod 1, the thickness that the handling case roof beam 7 was treated in the matching use, and operating personnel passes opening on the handling case roof beam 7 with connecting rod 1, and on keeping away from the tip of first lug 8 with connecting rod 1 with first movable nut 4 threaded connection again, until first movable nut 4 with treat handling case roof beam 7 butt. The operator then passes the hook 2 through the first lifting lug 8 on the connecting rod 1, presses the two side plates 62 simultaneously in the direction close to the movable lock rod 52 before passing the hook 2 through the first lifting lug 8, pushes the movable lock rod 52 to move in the direction close to the fixed lock rod 51, takes one end of the movable lock rod 52 out of the lock ring 54, and then passes the hook 2 through the first lifting lug 8. After the hook 2 passes through the first lifting lug 8, the two side plates 62 are pressed simultaneously in the direction close to the movable lock rod 52, the movable lock rod 52 is pushed to move in the direction away from the fixed lock rod 51, the movable lock rod 52 passes through the lock ring 54, the hook 2 is sealed, the two side plates 62 are loosened, the six return springs 63 are all in a natural state, and the two side plates 62 are abutted against the lock ring 54 to prevent the movable lock rod 52 from being separated from the lock ring 54. The four hoisting devices are respectively arranged around the box girder 7 to be hoisted, and finally the hoisting machine is connected with the four hoisting seats 3 to hoist the box girder 7 to be hoisted.
In the description of the present invention, it should be understood that the terms "counterclockwise", "clockwise", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Claims (8)
1. The utility model provides a case roof beam hoist device which characterized in that: the lifting device comprises a connecting rod (1), a lifting hook (2) and a lifting seat (3), wherein the lifting hook (2) is connected with the lifting seat (3), and the connecting rod (1) is used for connecting the lifting hook (2) with a box girder (7) to be lifted;
the one end of connecting rod (1) is provided with the screw thread, the tip threaded connection of connecting rod (1) has first movable nut (4), the other end of connecting rod (1) is provided with first lug (8), connecting rod (1) is including dead lever (11) and movable rod (12), the inside cavity of dead lever (11) sets up, the one end of movable rod (12) slides and sets up the inside of dead lever (11), movable rod (12) are located length-adjustable in dead lever (11).
2. A box girder hoisting device according to claim 1, characterized in that: the movable rod (12) is a screw rod, and the inner wall of the fixed rod (11) is provided with threads matched with the threads of the movable rod (12).
3. A box girder hoisting device according to claim 1, characterized in that: be provided with from latch fitting (5) on lifting hook (2), from latch fitting (5) including fixed locking lever (51) and activity locking lever (52), fixed locking lever (51) are inside cavity setting, the one end of activity locking lever (52) is located in fixed locking lever (51), be provided with coupling spring (53) in fixed locking lever (51), coupling spring (53) extend along the length direction of fixed locking lever (51), the port of lifting hook (2) is provided with the confession catch (54) that activity locking lever (52) passed.
4. A box girder hoisting device according to claim 3, characterized in that: one end of the fixed lock rod (51) close to the movable lock rod (52) is provided with a first anti-ring-off plate (511), one end of the movable lock rod (52) located at the fixed lock rod (51) is provided with a second anti-ring-off plate (521), and the diameter of the outer ring of the second anti-ring-off plate (521) is larger than that of the inner ring of the first anti-ring-off plate (511).
5. A box girder hoisting device according to claim 4, characterized in that: the one end that fixed locking lever (51) was kept away from in activity locking lever (52) is provided with anticreep spare (6), the cross sectional shape of anticreep spare (6) is down trapezoidal, anticreep spare (6) include bottom plate (61) and two curb plates (62), bottom plate (61) and activity locking lever (52) fixed connection, two the one end of curb plate (62) is articulated with the both ends of bottom plate (61) respectively, all be provided with a plurality of reset spring (63) between activity locking lever (52) and two curb plates (62).
6. A box girder hoisting device according to claim 1, characterized in that: the lifting hook (2) is detachably connected with the lifting seat (3).
7. A box girder hoisting device according to claim 6, characterized in that: lifting hook (2) fixedly connected with connecting plate (21), a plurality of first connection openings have been seted up on hanging seat (3), a plurality of second connection openings have been seted up on connecting plate (21), connecting plate (21) with be provided with a plurality of connecting bolt (22) between hanging seat (3), connecting bolt (22) pass a first connection opening and a second connection opening, connecting bolt (22) keep away from its fixation nut's one end threaded connection has second movable nut (23).
8. A box girder hoisting device according to claim 7, characterized in that: the connecting plate (21) is provided with a plurality of reinforcing ribs (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921433452.3U CN210795531U (en) | 2019-08-30 | 2019-08-30 | Box girder hoisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921433452.3U CN210795531U (en) | 2019-08-30 | 2019-08-30 | Box girder hoisting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210795531U true CN210795531U (en) | 2020-06-19 |
Family
ID=71246075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921433452.3U Expired - Fee Related CN210795531U (en) | 2019-08-30 | 2019-08-30 | Box girder hoisting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210795531U (en) |
-
2019
- 2019-08-30 CN CN201921433452.3U patent/CN210795531U/en not_active Expired - Fee Related
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