CN214935530U - Tower crane capable of automatically adjusting hoisting capacity - Google Patents
Tower crane capable of automatically adjusting hoisting capacity Download PDFInfo
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- CN214935530U CN214935530U CN202120478278.5U CN202120478278U CN214935530U CN 214935530 U CN214935530 U CN 214935530U CN 202120478278 U CN202120478278 U CN 202120478278U CN 214935530 U CN214935530 U CN 214935530U
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Abstract
The utility model discloses an automatic adjust tower machine of lifting capacity, include the tower body and be located the tower arm of tower body one side, the tower arm includes a plurality of sections standard festivals, the standard festival frame size of a plurality of festivals reduces in proper order, and the less standard festival outside of frame size is overlapped to the great standard festival of frame size, but relative slip between the adjacent standard festival, and the tower body opposite side is equipped with the balance arm, be equipped with actuating mechanism on the balance arm, on the standard festival of tower body one side was kept away from to actuating mechanism's drive end fixed connection, the tower body top was equipped with torque sensor, actuating mechanism and torque sensor electric connection PLC treater. The utility model discloses can adjust the length of tower arm according to the moment size of torque sensor transmission, reach the function that increases rated load crane and hang thing weight.
Description
Technical Field
The utility model relates to a tower machine technical field, concretely relates to automatic adjust tower machine of lifting capacity.
Background
The tower crane is the most common hoisting equipment on the construction site, is called as a tower crane, is lengthened section by section (called as a standard section for short) and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction, and the tower crane is an essential equipment on the construction site.
The existing tower crane still continues to work after the existing tower crane is lifted to exceed the rated lifting weight of the existing tower crane, the existing tower crane is easy to damage and even dump, or after the existing tower crane is lifted to exceed the rated lifting weight of the existing tower crane, due to the fact that a system alarms, goods are put down, and the existing tower crane cannot be lifted.
SUMMERY OF THE UTILITY MODEL
For solving above technical problem, the utility model provides an automatic adjust tower machine of lifting capacity can adjust the length of tower arm according to the moment size of torque sensor transmission, reaches the function that increases rated load crane and hangs thing weight.
The utility model adopts the following technical scheme:
the utility model provides an automatic adjust crane of lifting capacity, includes the tower body and is located the tower arm of tower body one side, the tower arm includes a plurality of sections standard festival, the standard festival frame size of a plurality of sections reduces in proper order, and the great standard festival of frame size overlaps in the less standard festival outside of frame size, but relative slip between the adjacent standard festival, and the tower body opposite side is equipped with the balance arm, be equipped with actuating mechanism on the balance arm, on the standard festival of tower body one side was kept away from to actuating mechanism's drive end fixed connection, the tower body top was equipped with torque sensor, actuating mechanism and torque sensor electric connection PLC treater.
Preferably, the driving mechanism comprises a driving motor, a belt, a gear assembly and a rack, the driving motor is fixed on the balance arm and connected with the gear assembly through the belt, the gear assembly is meshed with the rack, and the rack is fixedly connected with the standard knot on one side far away from the tower body.
Preferably, the gear assembly comprises a gear, a connecting column and a belt pulley, the connecting column is connected between the gear and the belt pulley, the belt pulley is connected with the belt in a matched mode, and the gear is connected with the rack in a matched mode.
Preferably, the end part of the standard joint far away from one side of the tower body is welded with a fixed block, and the other end of the fixed block is welded with the end part of the rack.
Preferably, a stop block is arranged at the upper end of one side, facing the tower body, in the standard knot.
Preferably, an electronic plug is arranged at the lower end of one side, facing the tower body, in the standard section, a slot is arranged at the corresponding position on the lower end of one side, far away from the tower body, of the adjacent standard section, and the electronic plug is electrically connected with the PLC processor.
Preferably, the standard knot far away from one side of the tower body is provided with an ultrasonic transmitter electrically connected with a PLC processor, and the PLC processor is provided with an ultrasonic receiver.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model discloses can adjust the length of tower arm according to the moment size of torque sensor transmission, reach the function that increases rated load crane and hang thing weight.
2. The standard knot is extended or retracted through the matching of the gear and the rack, the structure is simple, and the operation is convenient.
3. When the standard knot is withdrawn, the standard knot can be abutted against the stop block of the adjacent standard knot and pushes the adjacent standard knot towards the direction of the tower body, the structure is simple, and the energy consumption can be reduced.
4. The limit and the common movement between the adjacent standard knots are realized through the matching between the electronic bolt and the slot.
5. And judging the distance between the standard knot and the PLC processor through the ultrasonic transmitter and the ultrasonic receiver to judge the length of the current tower arm.
Drawings
Fig. 1 is a schematic structural diagram of a tower crane.
Fig. 2 is a partially enlarged view of a portion a of fig. 1.
Fig. 3 is a partially enlarged view of portion B of fig. 1.
Fig. 4 is an exploded view of the gear assembly and mounting bracket.
Fig. 5 is a simplified schematic diagram of a tower arm.
Fig. 6 is a partially enlarged view of the portion C of fig. 5.
Fig. 7 is a partially enlarged view of portion D of fig. 5.
Fig. 8 is a schematic circuit connection diagram of the tower crane.
In the figure, a tower body 1, a tower arm 2, a standard joint 21, a fixed block 211, a stop block 212, an electronic bolt 213, a bolt body 2131, a bolt head 2132, a slot 214, a first standard joint 215, a second standard joint 216, a third standard joint 217, a fourth standard joint 218, a balance arm 3, a driving mechanism 4, a driving motor 41, a belt 42, a gear assembly 43, a gear 431, a connecting column 432, a belt pulley 433, a rack 44, a mounting rack 45, a torque sensor 5, a PLC processor 6, an ultrasonic transmitter 7 and an ultrasonic receiver 8.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-8, a tower crane capable of automatically adjusting lifting capacity includes a tower body 1 and a tower arm 2 located at one side of the tower body 1, where the tower arm 2 includes a plurality of standard joints 21, for convenience of representation, four standard joints 21 are selected in this embodiment, which are a first standard joint 215, a second standard joint 216, a third standard joint 217, and a fourth standard joint 218, and the frame sizes of the four standard joints 21 are sequentially reduced, that is, the frame size of the first standard joint 215 is the largest, the frame size of the fourth standard joint 218 is the smallest, the standard joint 21 with the larger frame size is sleeved outside the standard joint 21 with the smaller frame size, specifically, the first standard joint 215 is sleeved outside the second standard joint 216, the second standard joint 216 is sleeved outside the third standard joint 217, the third standard joint 217 is sleeved outside the fourth standard joint 218, adjacent standard joints 21 can slide relatively, a balance arm 3 is disposed at the other side of the tower body 1, the balance arm 3 is provided with a driving mechanism 4, a driving end of the driving mechanism 4 is fixedly connected to the standard knot 21 far away from one side of the tower body 1, and in this embodiment, the standard knot 21 far away from one side of the tower body 1 is a fourth standard knot 218.
The top of the tower body 1 is provided with a torque sensor 5, and the driving mechanism 4 and the torque sensor 5 are electrically connected with a PLC (programmable logic controller) processor 6. The moment sensor 5 is used for measuring the current moment, and if the moment exceeds the rated weight, one or more standard sections 21 are retracted through the driving mechanism 4 to increase the rated weight, so that the tower crane is prevented from toppling due to overlarge moment.
The driving mechanism 4 comprises a driving motor 41, a belt 42, a gear assembly 43 and a rack 44, the driving motor 41 is fixed on the balance arm 3 and used for providing power, the driving motor is connected with the gear assembly 43 through the belt 42, the gear assembly 43 is meshed with the rack 44, the rack 44 is fixedly connected to the standard joint 21 on one side far away from the tower body 1, namely, when the driving motor 41 rotates, the belt 42 drives the gear assembly 43, the gear assembly 43 is meshed with the rack 44, and the rack 44 can slide relative to the balance arm 3 to drive the fourth standard joint 218 to move. In particular, the rack 44 is positioned within the frame of the fourth standard knot 218 to prevent interference with other standard knots during movement.
The gear assembly 43 comprises a gear 431, a connecting column 432 and a belt pulley 433, wherein the connecting column 432 is connected between the gear 431 and the belt pulley 433, the belt pulley 433 is in fit connection with the belt 42, and the gear 431 is in fit connection with the rack 44.
The gear assembly 43 is mounted on the balance arm 3 through a mounting frame 45, the upper end of the mounting frame 45 is a bearing, the connecting column 432 is arranged in the bearing, and the lower end of the mounting frame 45 is arranged on the balance arm 3.
Keep away from the standard festival 21 tip welding of tower body 1 one side has fixed block 211, the fixed block 211 other end and rack 44 tip welding through fixed block 211 fixed connection rack 44 and fourth standard festival 218, simple structure, the practicality is strong.
The upper end of one side of the standard knot 21 facing the tower body 1 is provided with a stop 212, and in this embodiment, the upper ends of the left sides of the first standard knot 215, the second standard knot 216, the third standard knot 217 and the fourth standard knot 218 are provided with stops 212 for linkage when retracting inwards.
An electronic plug 213 is arranged at the lower end of one side of the standard section 21 facing the tower body 1, a slot 214 is arranged at the corresponding position on the lower end of one side of the adjacent standard section 21 far away from the tower body 1, and the electronic plug 213 is electrically connected with the PLC processor 6. In this embodiment, the left side of the fourth standard knot 218 is provided with an electronic pin 213, and the right side of the third standard knot 217 is provided with a slot 214 matched with the fourth standard knot; the left side of the third standard knot 217 is provided with an electronic bolt 213, and the right side of the second standard knot 216 is provided with a slot 214 matched with the third standard knot; the left side of the second standard node 216 is provided with an electronic pin 213, and the right side of the first standard node 215 is provided with a slot 214 matched with the first standard node.
The electronic bolt 213 comprises a bolt body 2131 and a bolt head 2132, wherein the bolt head 2132 can be embedded into the slot 214 for limiting, the bolt head 2132 retracts when the electronic bolt 213 is powered on, and the bolt head 2132 extends out for limiting when the electronic bolt 213 is powered off.
And an ultrasonic transmitter 7 electrically connected with the PLC processor 6 is arranged on the standard section 21 far away from one side of the tower body 1, and an ultrasonic receiver 8 is arranged on the PLC processor 6. The ultrasonic transmitter 7 transmits ultrasonic waves to the ultrasonic receiver 8 for ranging, in this embodiment, the length of one standard knot 21 is one meter, the distance from the ultrasonic receiver 8 to the tower body 1 is one meter, and when the tower arm 2 is fully extended, the distance from the ultrasonic receiver 8 to the fourth standard knot 218 is five meters. If the distance from the ultrasonic receiver 8 to the fourth standard knot 218 is three meters in a certain movement, it means that the contracted standard knot is two knots.
When the utility model is used, the rated lifting moment 1000N · M designed by the tower crane is calculated, when the value of the torque sensor 5 is 2000N · M, the moment is force arm force according to the moment calculation formula, the force in the vertical direction is constant, the moment is in direct proportion to the force arm, namely, the 2-section standard section 21 is reduced, at this time, the PLC processor 6 controls the driving motor 41 to rotate to contract the standard section 21 and electrify the electronic bolt 213 of the fourth standard section 218 and the third standard section 217, the electronic bolt 213 of the fourth standard section 218 is separated from the limit of the slot 214 of the third standard section 217, the electronic bolt 213 of the third standard section 217 is separated from the limit of the slot 214 of the second standard section 216, the driving motor 41 controls the rack 44 to move leftwards, drives the fourth standard section 218 to contract leftwards, until the frame of the fourth standard section 218 is supported on the stop block 212 of the third standard section 217, at this time, the driving motor 41 continues to control the rack 44 to move leftwards, meanwhile, the fourth standard knot 218 and the third standard knot 217 are driven to contract leftwards until the frame of the third standard knot 217 abuts against the stop block 212 of the second standard knot 216, at the moment, the distance from the ultrasonic receiver 8 to the fourth standard knot 218 is three meters, the contraction of the two standard knots 21 is completed, and the rated lifting moment is increased to 2000 N.M.
When the value of the torque sensor 5 is 2100N · M, the moment is force arm x force according to the moment calculation formula, and the force in the vertical direction is fixed, the moment is in direct proportion to the force arm, that is, the number of the standard knots 21 is reduced by 2.1, and the PLC processor contracts the three standard knots 21 by adopting a further method.
If the two standard sections are contracted at this time, when the standard sections need to be extended out, the driving motor 41 is rotated reversely, the rack 44 is controlled to move rightwards, the fourth standard section 218 is driven to extend rightwards, the electronic bolt 213 of the fourth standard section 218 is powered off until the distance from the ultrasonic receiver 8 to the fourth standard section 218 is four meters, the bolt head 2132 extends out and is embedded into the slot 214 of the third standard section 217 for limiting, then the fourth standard section 218 extends rightwards continuously until the distance from the ultrasonic receiver 8 to the fourth standard section 218 is five meters, the electronic bolt 213 of the third standard section 217 is powered off, the bolt head 2132 extends out and is embedded into the slot 214 of the second standard section 216 for limiting, at this time, the fourth standard section 218 extends rightwards to the limit position, and the driving motor 41 stops working.
The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is defined by the scope defined by the claims, and a plurality of modifications and decorations made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides an automatic adjust tower crane of lifting capacity, includes tower body (1) and tower arm (2) that are located tower body (1) one side, tower arm (2) include a plurality of sections standard festival (21), its characterized in that, the standard festival (21) frame size of a plurality of sections reduces in proper order, and the great standard festival (21) of frame size overlaps in the less standard festival (21) outside of frame size, but relative slip between adjacent standard festival (21), and tower body (1) opposite side is equipped with balance arm (3), be equipped with actuating mechanism (4) on balance arm (3), on the standard festival (21) of tower body (1) one side were kept away from to the drive end fixed connection of actuating mechanism (4), tower body (1) top was equipped with torque sensor (5), actuating mechanism (4) and torque sensor (5) electric connection PLC treater (6).
2. The tower crane capable of automatically adjusting the hoisting capacity according to claim 1, wherein the driving mechanism (4) comprises a driving motor (41), a belt (42), a gear assembly (43) and a rack (44), the driving motor (41) is fixed on the balance arm (3) and is connected with the gear assembly (43) through the belt (42), the gear assembly (43) is meshed with the rack (44), and the rack (44) is fixedly connected with the standard knot (21) on one side far away from the tower body (1).
3. The tower crane capable of automatically adjusting the lifting capacity as claimed in claim 2, wherein the gear assembly (43) comprises a gear (431), a connecting column (432) and a belt pulley (433), the connecting column (432) is connected between the gear (431) and the belt pulley (433), the belt pulley (433) is in fit connection with the belt (42), and the gear (431) is in fit connection with the rack (44).
4. Tower crane with automatic lifting capacity adjustment according to claim 3, characterized in that the gear assembly (43) is mounted on the balance arm (3) by means of a mounting bracket (45).
5. The tower crane capable of automatically adjusting the hoisting capacity according to claim 1, wherein a fixed block (211) is welded to the end of the standard knot (21) on the side far away from the tower body (1), and the other end of the fixed block (211) is welded to the end of the rack (44).
6. Tower crane with automatic lifting capacity adjustment according to claim 1, characterized in that a stop (212) is arranged at the upper end of the side of the standard knot (21) facing the tower body (1).
7. The tower crane capable of automatically adjusting the hoisting capacity as claimed in claim 1, wherein an electronic plug (213) is arranged at the lower end of one side of the standard knot (21) facing the tower body (1), a slot (214) is arranged at the corresponding position at the lower end of one side of the adjacent standard knot (21) far away from the tower body (1), and the electronic plug (213) is electrically connected with the PLC processor (6).
8. The tower crane capable of automatically adjusting the hoisting capacity according to claim 1, wherein the standard knot (21) far away from one side of the tower body (1) is provided with an ultrasonic transmitter (7) electrically connected with the PLC processor (6), and the PLC processor (6) is provided with an ultrasonic receiver (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120478278.5U CN214935530U (en) | 2021-03-05 | 2021-03-05 | Tower crane capable of automatically adjusting hoisting capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120478278.5U CN214935530U (en) | 2021-03-05 | 2021-03-05 | Tower crane capable of automatically adjusting hoisting capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214935530U true CN214935530U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120478278.5U Active CN214935530U (en) | 2021-03-05 | 2021-03-05 | Tower crane capable of automatically adjusting hoisting capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214935530U (en) |
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2021
- 2021-03-05 CN CN202120478278.5U patent/CN214935530U/en active Active
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