CN219971638U - Low-clearance trolley for crane - Google Patents
Low-clearance trolley for crane Download PDFInfo
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- CN219971638U CN219971638U CN202322703387.4U CN202322703387U CN219971638U CN 219971638 U CN219971638 U CN 219971638U CN 202322703387 U CN202322703387 U CN 202322703387U CN 219971638 U CN219971638 U CN 219971638U
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- trolley
- winding drum
- main lifting
- frame
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- 238000004804 winding Methods 0.000 claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 239000000872 buffer Substances 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 230000035929 gnawing Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
The low-clearance trolley for the crane comprises a trolley frame which is horizontally arranged, trolley travelling mechanisms are respectively arranged at four corners of the bottom end of the trolley frame, a main lifting mechanism and an auxiliary lifting mechanism are respectively arranged in the trolley frame, the main lifting mechanism comprises a main lifting winding drum which is horizontally arranged, two ends of the main lifting winding drum can be rotatably assembled on the trolley frame, a main lifting motor is fixed on the trolley frame at one end of the main lifting winding drum, a power output shaft of the main lifting motor is in transmission connection with the main lifting winding drum through a speed reducer, a guide wheel set frame is fixed on the trolley frame at the left side of the main lifting winding drum, two guide wheel sets which are symmetrically arranged are rotatably assembled on the guide wheel set frame, and the guide wheel set is positioned at the left upper side of the main lifting winding drum; a main lifting hook is arranged below the trolley frame and connected with the main lifting winding drum through a steel wire rope. The utility model has simple structure and convenient use.
Description
Technical Field
The utility model belongs to the technical field of cranes, and particularly relates to a low-clearance trolley for a crane.
Background
The crane is a multi-action hoisting machine for vertically hoisting and horizontally carrying heavy objects in a certain range, also called a crown block, an aerial crane and a crane, wherein the bridge crane is hoisting equipment for hoisting materials transversely above workshops, warehouses and material yards, a trolley travelling rail is generally arranged below a main beam of the crane, an electric hoist is suspended on the trolley travelling rail, the electric hoist moves on a guide rail, and a lifting hook lifts or descends under the action of the electric hoist; however, if the crane hoist works indoors, the height of the crane hoist body is limited by the height of the steel structure factory building, and the crane hoist body is relatively large, so that the heavy object cannot be lifted to an effective height, the work cannot be completed, the heavy object is difficult to lift, and the lifting of the heavy object is limited. If the height of the steel structure factory building is increased, the increased cost is large and the working efficiency is seriously affected, so that the existing bridge crane cannot lift heavy objects to an effective height due to the height limitation of the steel structure factory building, and the problems of low working efficiency, inconvenience in operation and the like are caused.
Disclosure of Invention
The utility model provides a low-clearance trolley for a crane, which aims to solve the technical problem that the existing single-beam bridge crane cannot meet the lifting height of a heavy object due to the height limitation. The main lifting mechanism comprises a main lifting reel which is horizontally arranged, two ends of the main lifting reel are rotatably assembled on the trolley frame, the main lifting reel is arranged in the trolley frame, the overall height is reduced, the main lifting hook can be lifted to a higher position, the lifting range of the main lifting hook is increased, a main lifting motor is fixed on the trolley frame at one end of the main lifting reel, a power output shaft of the main lifting motor is in transmission connection with the main lifting reel through a speed reducer, the speed reducer is arranged at the same end of the main lifting reel, the length of a transmission shaft can be shortened, the service life of the main lifting motor is prolonged, a guide wheel set frame is fixed on the trolley frame at the left side of the main lifting reel, two groups of guide wheel sets which are symmetrically arranged are rotatably assembled on the guide wheel set frame, the main lifting hook is arranged at the left upper side of the main lifting reel, the main lifting hook is arranged below the trolley frame, the main lifting hook is connected with the main lifting reel through a steel wire rope, the main lifting motor is started, the main lifting motor drives the main lifting reel to rotate, the main lifting reel is wound with a steel wire rope, and the main lifting weight is pulled by the steel wire rope. The top of main lifting hook is equipped with the movable pulley support, and the upper end of main lifting hook can be dismantled and fix the lower extreme at the movable pulley support, and the upper end rotatable of movable pulley support is equipped with the running block that two symmetries set up, and two running blocks set up with two direction wheelsets one-to-one, and the setting of direction wheelset can reduce the main lifting hook and main inclined angle that rises between the reel wire rope, reduces wire rope traction force, can reduce the wire rope simultaneously and break away from the probability that the reel goes up the rope groove to rise to the main lifting reel, has improved the security. The auxiliary lifting mechanism comprises an auxiliary lifting winding drum which is horizontally arranged, the auxiliary lifting winding drum can be rotatably assembled on a trolley frame, an auxiliary lifting motor is arranged on the trolley frame, and a power output shaft of the auxiliary lifting motor is in transmission connection with the auxiliary lifting winding drum through a speed reducer; the speed reducer and the auxiliary lifting motor are arranged at the same end of the auxiliary lifting winding drum, so that the length of the transmission shaft can be shortened, the service life of the auxiliary lifting motor is prolonged, an auxiliary lifting hook is arranged below the auxiliary lifting winding drum and connected to the auxiliary lifting winding drum through a steel wire rope, and the auxiliary lifting mechanism can assist the main lifting mechanism to lift heavy objects, so that the auxiliary lifting mechanism is suitable for different lifting heavy objects.
Preferably, the main lifting winding drum is a duplex winding drum, and the two movable pulley blocks, the two guide pulley groups and the duplex winding drum are connected through a steel wire rope.
Preferably, the auxiliary lifting winding drum is parallel to the main lifting winding drum, so that space is saved, and the structure is more compact.
Preferably, the left end and the right end of the trolley frame are respectively provided with a buffer, and when the trolley frame collides, the buffers play a role in buffering.
Preferably, the ends of the main lifting winding drum and the auxiliary lifting winding drum are respectively provided with a lifting height limiter, and the lifting height limiters can limit the lifting heights of the main lifting hook and the auxiliary lifting hook, so that the main lifting hook and the auxiliary lifting hook are prevented from being lifted, and the safety is enhanced.
Preferably, two groups of symmetrically arranged guide rollers with guiding function are arranged on the trolley frame, and the guide rollers can prevent the trolley travelling wheels from gnawing.
The adoption of the scheme has the following advantages:
the main lifting winding drum is arranged in the trolley frame, so that the overall height is reduced, compared with the existing electric hoist Xu Xuangua which is arranged on a trolley travelling rail at the bottom end of the main beam, the main lifting hook can be lifted to a higher position, and the lifting range of the main lifting hook is increased; the trolley travelling mechanism is arranged, a trolley travelling motor is started, the trolley travelling motor drives trolley travelling wheels to rotate, the trolley travelling wheels freely move along a trolley travelling track on a main beam of the crane, and the transverse position of a trolley frame is adjusted; the auxiliary lifting mechanism can assist the main lifting mechanism to lift the heavy objects, so that the auxiliary lifting mechanism is suitable for different lifted heavy objects; the guide pulley group is located the upper left side that plays to rise the reel, can increase the rise height, simultaneously, and the setting of guide pulley group can also reduce the main lifting hook and play to rise the inclined angle of wire rope between the reel, reduces wire rope traction force, can reduce the probability that wire rope breaks away from the main reel and goes up the rope groove that plays to rise simultaneously, has improved the security.
Drawings
FIG. 1 is a schematic diagram of a front view of the present utility model;
FIG. 2 is a schematic top view of the present utility model;
fig. 3 is a schematic left-view structure of the present utility model.
Reference numerals: 1. a trolley frame; 2. a trolley travel mechanism; 3. a main lifting mechanism; 4. an auxiliary lifting mechanism; 5. a wire rope; 11. a buffer; 12. a lifting height limiter; 13. a guide roller; 21. a trolley travelling wheel; 22. a trolley walking motor; 23. a gear set; 31. a main hoisting drum; 32. a main lifting motor; 33. a guide wheel set frame; 34. a guide wheel set; 35. a main hook; 36. a movable pulley bracket; 37. a movable pulley block; 38. a speed reducer; 41. an auxiliary lifting winding drum; 42. an auxiliary lifting motor; 43. and a secondary lifting hook.
Detailed Description
As shown in fig. 1-3, a low-clearance trolley for a crane comprises a trolley frame 1 which is horizontally arranged, wherein the trolley frame 1 plays a supporting role, trolley travelling mechanisms 2 are respectively arranged at four corners of the bottom end of the trolley frame 1, each trolley travelling mechanism 2 comprises a trolley travelling wheel 21 rotatably arranged on the trolley frame 1, a trolley travelling motor 22 is fixed on the trolley frame 1, the trolley travelling motor 22 is in transmission connection with the trolley travelling wheels 21 through a gear set 23, the trolley travelling motor 22 is started, the trolley travelling motor 22 drives the trolley travelling wheels 21 to rotate, the trolley travelling wheels 21 freely move along trolley travelling tracks on a crane girder, and the transverse position of the trolley frame 1 is adjusted. The main lifting mechanism 3 and the auxiliary lifting mechanism 4 are assembled in the trolley frame 1, the main lifting mechanism 3 comprises a main lifting drum 31 which is horizontally arranged, two ends of the main lifting drum 31 are rotatably assembled on the trolley frame 1, the main lifting drum 31 is arranged in the trolley frame 1, the overall height is reduced, a main lifting hook 35 can be lifted to a higher position, the lifting range of the main lifting hook 35 is increased, a main lifting motor 32 is fixed on the trolley frame 1 at one end of the main lifting drum 31, a power output shaft of the main lifting motor 32 is in transmission connection with the main lifting drum 31 through a speed reducer 38, the speed reducer 38 and the main lifting motor 32 are arranged at the same end of the main lifting drum 31, the length of a transmission shaft can be shortened, the service life of the main lifting motor 32 is prolonged, guide pulley sets 33 are rotatably assembled on the trolley frame 1 at the left side of the main lifting drum 31, the main lifting hook 35 is arranged below the trolley frame 1, the main lifting hook 35 is connected with the main lifting drum 31 through a steel wire rope 5, the main lifting motor 32 is started, the main lifting motor 32 drives the main lifting drum 31 to rotate, and the main lifting hook 5 is pulled by the steel wire rope 5 to lift the main lifting drum 31. The top of main lifting hook 35 is equipped with movable pulley support 36, the upper end of main lifting hook 35 can be dismantled and fix the lower extreme at movable pulley support 36, movable pulley support 36's upper end rotatable be equipped with two movable pulley blocks 37 that the symmetry set up, guide pulley group 34 is located the upper left side of main reel 31 that plays, can increase the rise height, two movable pulley blocks 37 and two guide pulley group 34 one-to-one set up, guide pulley group 34's setting can reduce the slope contained angle of wire rope 5 between main lifting hook 35 and the main reel 31 that plays, reduce wire rope 5 traction force, can reduce the probability that wire rope 5 breaks away from the rope groove on the main reel 31 that plays simultaneously, the security has been improved. The auxiliary lifting mechanism 4 comprises an auxiliary lifting winding drum 41 which is horizontally arranged, the auxiliary lifting winding drum 41 can be rotatably assembled on the trolley frame 1, an auxiliary lifting motor 42 is arranged on the trolley frame 1, and a power output shaft of the auxiliary lifting motor 42 is in transmission connection with the auxiliary lifting winding drum 41 through a speed reducer 38; the speed reducer 38 and the auxiliary lifting motor 42 are arranged at the same end of the auxiliary lifting winding drum 41, so that the span of the trolley frame 1 can be greatly adjusted, the length of a transmission shaft is shortened, the service life of the auxiliary lifting motor 42 is prolonged, an auxiliary lifting hook 43 is arranged below the auxiliary lifting winding drum 41, the auxiliary lifting hook 43 is connected to the auxiliary lifting winding drum 41 through a steel wire rope 5, and the auxiliary lifting mechanism 4 is arranged to assist the main lifting mechanism 3 to lift heavy objects, so that the auxiliary lifting mechanism is suitable for lifting heavy objects differently.
Preferably, the main hoisting drum 31 is a duplex drum, and the two movable pulley blocks 37, the two guiding pulley sets 34 and the duplex drum are connected by the wire rope 5.
Preferably, the auxiliary lifting reel 41 is parallel to the main lifting reel 31, saving space and making the structure more compact.
Preferably, the left and right ends of the trolley frame 1 are provided with the buffer 11, and the buffer 11 plays a role in buffering when the trolley frame 1 collides.
Preferably, the ends of the main hoisting drum 31 and the auxiliary hoisting drum 41 are equipped with a hoisting height limiter 12, and the hoisting height limiter 12 can limit the hoisting heights of the main hook 35 and the auxiliary hook 43, so that the main hook 35 and the auxiliary hook 43 are prevented from being pushed, and the safety is enhanced.
Preferably, two groups of symmetrically arranged guiding rollers 13 are arranged on the trolley frame 1, and the guiding rollers 13 can prevent the trolley travelling wheels 21 from gnawing.
The using process comprises the following steps:
when the trolley frame 1 is used, the trolley frame 1 is assembled on a trolley travelling rail on a main beam of a crane, the trolley travelling wheels 21 are in rolling fit with the trolley travelling rail, the trolley travelling motor 22 is started, the trolley travelling motor 22 drives the trolley travelling wheels 21 to rotate, and the trolley travelling wheels 21 drive the trolley frame 1 to freely move above the main beam, so that the transverse position of the trolley frame 1 is adjusted; and then starting the main lifting motor 32, driving the main lifting drum 31 to rotate by the main lifting motor 32, releasing the steel wire rope 5 by the main lifting drum 31, stopping the main lifting motor 32 after the main lifting hook 35 falls to a certain position in the vertical direction, starting the main lifting motor 32 again after the main lifting hook 35 hangs the heavy object, driving the main lifting drum 31 to wind the steel wire rope 5 by the main lifting motor 32, pulling the main lifting hook 35 by the steel wire rope 5 to hoist the heavy object, adjusting the position of the trolley frame 1 by the trolley travelling mechanism 2 after the main lifting hook 35 is lifted to a certain position, and starting the main lifting motor 32 again after the trolley frame 1 moves to a proper position, and placing the heavy object to a specified position. The operation of the auxiliary lifting mechanism 4 is the same as that of the main lifting mechanism 3, and the main lifting mechanism 3 and the auxiliary lifting mechanism 4 can mutually cooperate to lift a heavy object.
In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.
Claims (9)
1. A low headroom dolly for hoist, including the dolly frame that the level set up, the bottom four corners department of dolly frame all is equipped with dolly running gear, its characterized in that: the trolley frame is internally provided with a main lifting mechanism and an auxiliary lifting mechanism, the main lifting mechanism comprises a main lifting winding drum which is horizontally arranged, two ends of the main lifting winding drum are rotatably assembled on the trolley frame, a main lifting motor is fixed on the trolley frame at one end of the main lifting winding drum, a power output shaft of the main lifting motor is in transmission connection with the main lifting winding drum through a speed reducer, a guide wheel set frame is fixed on the trolley frame at the left side of the main lifting winding drum, two groups of symmetrically arranged guide wheel sets are rotatably assembled on the guide wheel set frame, and the guide wheel set is positioned at the left upper side of the main lifting winding drum; a main lifting hook is arranged below the trolley frame and connected with the main lifting winding drum through a steel wire rope.
2. The low headroom trolley for a crane of claim 1, wherein: the upper side of main lifting hook is equipped with the movable pulley support, and the upper end of main lifting hook can be dismantled and fix the lower extreme at the movable pulley support, and the upper end rotatable of movable pulley support is equipped with the movable pulley block that two symmetries set up, and two movable pulley blocks set up with two direction wheelsets one-to-one.
3. The low headroom trolley for a crane of claim 2, wherein: the main lifting winding drum is a duplex winding drum, and the two movable pulley blocks, the two guide pulley groups and the duplex winding drum are connected through a steel wire rope.
4. The low headroom trolley for a crane of claim 1, wherein: the trolley travelling mechanism comprises trolley travelling wheels rotatably assembled on a trolley frame, a trolley travelling motor is fixed on the trolley frame, and the trolley travelling motor is in transmission connection with the trolley travelling wheels through a gear set.
5. The low headroom trolley for a crane of claim 1, wherein: the auxiliary lifting mechanism comprises an auxiliary lifting winding drum which is horizontally arranged, the auxiliary lifting winding drum can be rotatably assembled on a trolley frame, an auxiliary lifting motor is arranged on the trolley frame, and a power output shaft of the auxiliary lifting motor is in transmission connection with the auxiliary lifting winding drum through a speed reducer; an auxiliary lifting hook is arranged below the auxiliary lifting winding drum and connected to the auxiliary lifting winding drum through a steel wire rope.
6. The low headroom trolley for a crane of claim 5, wherein: the auxiliary lifting winding drum is parallel to the main lifting winding drum.
7. The low headroom trolley for a crane of claim 6, wherein: the left end and the right end of the trolley frame are respectively provided with a buffer.
8. The low headroom trolley for a crane of claim 7, wherein: the ends of the main lifting winding drum and the auxiliary lifting winding drum are respectively provided with a lifting height limiter.
9. The low headroom trolley for a crane of claim 8, wherein: two groups of symmetrically arranged guide rollers with guiding function are arranged on the trolley frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322703387.4U CN219971638U (en) | 2023-10-10 | 2023-10-10 | Low-clearance trolley for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322703387.4U CN219971638U (en) | 2023-10-10 | 2023-10-10 | Low-clearance trolley for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219971638U true CN219971638U (en) | 2023-11-07 |
Family
ID=88596161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322703387.4U Active CN219971638U (en) | 2023-10-10 | 2023-10-10 | Low-clearance trolley for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219971638U (en) |
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2023
- 2023-10-10 CN CN202322703387.4U patent/CN219971638U/en active Active
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