CN216807848U - Weight detection mechanism, weight limiter and hoisting equipment - Google Patents
Weight detection mechanism, weight limiter and hoisting equipment Download PDFInfo
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- CN216807848U CN216807848U CN202220077060.3U CN202220077060U CN216807848U CN 216807848 U CN216807848 U CN 216807848U CN 202220077060 U CN202220077060 U CN 202220077060U CN 216807848 U CN216807848 U CN 216807848U
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Abstract
The utility model discloses a weight detection mechanism, a weight limiter and hoisting equipment, and relates to the technical field of hoisting. The weight detection mechanism comprises a connecting assembly, a pulley, a pin shaft type sensor and a tension detection assembly, wherein one end of the connecting assembly is used for being pivoted with the crane boom; the pulley is used for connecting a hoisting rope, the pulley is sleeved on the pin shaft type sensor, and the pin shaft type sensor is connected with the connecting component; one end of the tension detection assembly is pivoted with the connecting assembly, and the other end of the tension detection assembly is used for being pivoted with the crane boom. The pin shaft type sensor and the tension detection assembly are more convenient to be made into a split type, so that the pin shaft type sensor and the tension detection assembly can be more conveniently and independently detected or maintained when the weight detection structure is abnormal in weight detection function and needs to be maintained, the detection and maintenance complexity is reduced, the maintenance time is shortened, and the maintenance cost is reduced.
Description
Technical Field
The utility model relates to the technical field of hoisting, in particular to a weight detection mechanism, a weight limiter and hoisting equipment.
Background
The weight limiter is applied to hoisting equipment such as a tower crane and the like, is one of the most important safety protection devices, and mainly has the main functions of limiting the maximum value of the hoisting capacity to be not more than the upper limit of the designed safe hoisting value of a crane boom, avoiding accidents (bending deformation, fracture and the like, serious overturn of the crane) caused by overload and over amplitude of the crane boom, and achieving the purpose of protecting the safety of the crane and operators by correctly using the weight limiter.
The weight detection mechanism of the load lifting limiter has two types, one is mechanical (spring lever principle) measurement, and the other is electronic (pressure sensor principle) measurement. At present, the use mode adopted by the weight detection mechanism is a mechanical and electronic integrated mode, the structure is compact, but after the hoisting limiter is damaged, the maintenance technical requirement is high, the time consumption is long, and the integral maintenance cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a weight detection mechanism, aiming at reducing the maintenance cost.
In order to achieve the purpose, the weight detection mechanism comprises a connecting component, a pulley, a pin shaft type sensor and a tension detection component, wherein one end of the connecting component is used for being pivoted with a crane boom; the pulley is used for connecting a hoisting rope, the pulley is sleeved on the pin shaft type sensor, and the pin shaft type sensor is connected with the connecting component; one end of the tension detection assembly is pivoted with the connecting assembly, and the other end of the tension detection assembly is used for being pivoted with the crane boom.
Optionally, the connecting assembly includes a first connecting portion, a second connecting portion, and a third connecting portion, which are sequentially arranged, the first connecting portion is configured to be pivotally connected to the boom, the second connecting portion is configured to be connected to the pin shaft sensor, and the third connecting portion is pivotally connected to the tension detecting assembly. First connecting portion, second connecting portion, third connecting portion arrange in proper order and set up, make the relative position placed in the middle of second pin joint portion that is used for being connected with the pin shaft type sensor in coupling assembling, coupling assembling forms lever structure, and the effort that the jack-up rope transmitted can be enlargied for the second connecting portion in third connecting portion department, is favorable to pulling force detection subassembly to reduce detection error.
Optionally, a ratio of a distance from the first connecting portion to the second connecting portion to a distance from the second connecting portion to the third connecting portion is greater than 1.3 and less than 2, so that an excessive range required by the tension detection assembly is avoided, and meanwhile, an acting force transmitted by the lifting rope can be properly amplified at the third connecting portion relative to the second connecting portion, which is more beneficial to detection of the tension detection assembly.
Optionally, a connecting portion of the connecting assembly pivotally connected to the tension detecting assembly is located between a connecting portion of the connecting assembly for pivotally connecting to the boom and a connecting portion of the boom pivotally connected to the pin shaft sensor, so that the connecting portion of the connecting assembly pivotally connected to the tension detecting assembly is located at a relatively central position of the connecting assembly, an acting force transmitted by the hoisting rope can be reduced at the tension detecting assembly, and the weight detecting mechanism is more suitable for hoisting equipment with a larger hoisting capacity.
Optionally, the connecting assembly includes a first connecting body and a second connecting body which are arranged side by side, a mounting gap is provided between the first connecting body and the second connecting body, one end of the pin shaft sensor is connected with the first connecting body, and the other end of the pin shaft sensor is connected with the second connecting body; the pulley is at least partially disposed within the mounting gap. The connecting assembly comprises a first connecting body and a second connecting body which are arranged side by side, a mounting gap is arranged between the first connecting body and the second connecting body, one end of the pin shaft type sensor is connected with the first connecting body, and the other end of the pin shaft type sensor is connected with the second connecting body, so that the weight detection mechanism is more stable in whole in bearing, and the weight detection of the pin shaft type sensor is more accurate.
Optionally, a reinforcing body is arranged on the outer side of the first connecting body and/or the outer side of the second connecting body, and the reinforcing body is connected with the pin shaft type sensor, so that the pin shaft type sensor can bear larger weight without causing damage to the connecting assembly, and the measuring range of the weight detecting mechanism is improved.
Optionally, a pivoting seat is arranged on the connecting assembly, and the first connecting body and the second connecting body are fixedly connected with the pivoting seat; the pin joint seat is provided with a pin joint groove, and two side walls of the pin joint groove are in pin joint with the tension detection assembly, so that the whole connection assembly is more stable when the crane boom is connected, and the weight detection of the tension detection assembly is more accurate.
Optionally, the pin-type sensor is detachably connected with the connecting assembly, and one end of the connecting assembly is used for being detachably connected with the crane arm; one end of the tension detection assembly is detachably connected with the connecting assembly, and the other end of the tension detection assembly is detachably connected with the crane boom; and/or the first connecting body and the second connecting body comprise channel steel, and the slotted side of the channel steel is arranged outwards; and/or the tension detection assembly comprises a force measuring ring. The pin shaft type sensor is detachably connected with the connecting assembly, one end of the connecting assembly is used for being detachably connected with the crane boom, one end of the tension detection assembly is detachably connected with the connecting assembly, and the other end of the tension detection assembly is detachably connected with the crane boom, so that the dismounting convenience of the weight detection mechanism is improved, the maintenance time is further shortened, and the maintenance cost is further reduced.
The utility model also provides a weight limiter which comprises a switch circuit, wherein the switch circuit is used for disconnecting the power supply of the driving device of the crane boom, the weight limiter comprises the weight detection mechanism, and the pin shaft type sensor and the tension detection assembly are electrically connected with the switch circuit.
The utility model also provides hoisting equipment which comprises a crane boom and the weight limiter.
According to the technical scheme, the weight detection mechanism comprises a connecting component, a pulley, a pin shaft type sensor and a tension detection component, wherein one end of the connecting component is used for being pivoted with a crane boom; the pulley is used for connecting a hoisting rope, the pulley is sleeved on the pin shaft type sensor, and the pin shaft type sensor is connected with the connecting component; one end of the tension detection assembly is pivoted with the connecting assembly, and the other end of the tension detection assembly is pivoted with the crane boom; the pin shaft type sensor and the tension detection assembly are more convenient to be made into a split type, so that the pin shaft type sensor and the tension detection assembly can be more conveniently and independently detected or maintained when the weight detection structure needs to be maintained due to the fact that the weight detection function is abnormal, the complexity of detection and maintenance is reduced, the maintenance time is shortened, and the maintenance cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a front view of an embodiment of the weight sensing mechanism of the present invention.
FIG. 2 is a left side view of the connecting assembly in an embodiment of the weight detecting mechanism of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a weight detection mechanism.
Referring to fig. 1 and 2, in an embodiment of the present invention, the weight detecting mechanism includes a connecting assembly 1, a pulley 2, a pin-type sensor 3, and a tension detecting assembly 4, in which the tension detecting assembly 4 includes a force measuring ring, the pulley 2 is a fixed pulley, and one end (the left end as shown in fig. 1) of the connecting assembly 1 is configured to be pivotally connected to the boom 5, that is, pivotally connected to the boom through a pivot, that is, one end (the left end as shown in fig. 1) of the connecting assembly 1 is configured to be pivotally connected to the boom 5, so that the connecting assembly 1 can rotate or swing relative to the boom 5. In this embodiment, the connecting member of the boom 5 is an upper chord. The pulley 2 is used for connecting a hoisting rope, the pulley 2 is sleeved on the pin shaft type sensor 3, the pin shaft type sensor 3 is connected with the connecting assembly 1, namely the pulley 2 is pivoted with the connecting assembly 1, and gravity borne by the hoisting rope acts on the pin shaft type sensor 3 through the pulley 2, so that the pin shaft type sensor 3 can detect hoisting weight; one end (the lower end shown in fig. 1) of the tension detection assembly 4 is pivotally connected to the connecting assembly 1, and the other end (the upper end shown in fig. 1) of the tension detection assembly 4 is pivotally connected to the boom 5. The pin shaft type sensor 3 and the tension detection assembly 4 are more beneficial to being made into a split type, so that the pin shaft type sensor 3 and the tension detection assembly 4 can be more conveniently and independently detected or maintained when the weight detection structure needs to be maintained due to the abnormal weight detection function, the detection and maintenance complexity is reduced, the maintenance time is shortened, and the maintenance cost is reduced.
As an alternative embodiment, the connection assembly 1 includes a first connection portion 11, a second connection portion 12, and a third connection portion 13 that are arranged in sequence, where in this embodiment, the first connection portion 11, the second connection portion 12, and the third connection portion 13 are arranged in a direction from left to right in fig. 1. The first connecting part 11 is used for being pivoted with the crane arm 5, the second connecting part 12 is used for being connected with the pin shaft type sensor 3, and the third connecting part 13 is pivoted with the tension detection assembly 4. First connecting portion 11, second connecting portion 12, third connecting portion 13 arrange in proper order and set up, and the second pin joint portion that makes for being connected with pin shaft type sensor 3 is located coupling assembling 1's position relatively placed in the middle, and coupling assembling 1 forms lever structure, and the effort that the jack-up rope transmitted can be enlargied for second connecting portion 12 in third connecting portion 13 department, is favorable to pulling force detection subassembly 4 to reduce detection error.
As an alternative embodiment, the ratio of the distance from the first connecting portion 11 to the second connecting portion 12 (L1 shown in fig. 1) to the distance from the second connecting portion 12 to the third connecting portion 13 (L2 shown in fig. 1) is greater than 1.3 and less than 2, so that the acting force transmitted by the hoisting rope at the third connecting portion 13 can be properly amplified relative to the second connecting portion 12 while avoiding the need for an excessively large range of the tension detection assembly 4, which is more beneficial for the detection of the tension detection assembly 4. Further as a preferred embodiment, the ratio of the distance from the first connection portion 11 to the second connection portion 12 (L1 shown in fig. 1) to the distance from the second connection portion 12 to the third connection portion 13 (L2 shown in fig. 1) is greater than 1.4 and less than 1.6.
As an optional embodiment, the connection assembly 1 includes a first connection body 14 and a second connection body 15 which are arranged side by side, both the first connection body 14 and the second connection body 15 include channel steel, and a slotted side of the channel steel faces outward; an installation gap 16 is arranged between the first connecting body 14 and the second connecting body 15, one end of the pin shaft type sensor 3 is connected with the first connecting body 14, and the other end of the pin shaft type sensor 3 is connected with the second connecting body 15; the pulley 2 is at least partially disposed in the mounting gap 16, and in this embodiment, the pulley 2 is partially disposed in the mounting gap 16, and the upper and lower ends extend out of the mounting gap 16 and the connecting assembly 1. The connecting assembly 1 comprises a first connecting body 14 and a second connecting body 15 which are arranged side by side, a mounting gap 16 is arranged between the first connecting body 14 and the second connecting body 15, one end of the pin shaft type sensor 3 is connected with the first connecting body 14, and the other end of the pin shaft type sensor 3 is connected with the second connecting body 15, so that the weight detection mechanism is more stable in bearing and accurate in weight detection of the pin shaft type sensor 3.
As an optional embodiment, the reinforcing bodies 17 are arranged on the outer sides of the first connecting body 14 and the second connecting body 15, and the reinforcing bodies 17 are connected with the pin shaft type sensor 3, so that the pin shaft type sensor 3 can bear larger weight without causing damage to the connecting assembly 1, and the measurement range of the weight detection mechanism is improved. In this embodiment, the reinforcing member 17 is provided as a reinforcing plate, and the plate plane of the reinforcing plate abuts against the outer side of the first connecting member 14 and the outer side of the second connecting member 15 and is fixed by a fastener such as a bolt.
As an optional implementation manner, the connecting assembly 1 is provided with a pivot seat 18, and the first connecting body 14 and the second connecting body 15 are both fixedly connected to the pivot seat 18, and can be fixedly connected by welding, bolting, and the like. The hub 18 is formed by welding three plates to form a U-shape. The pivoting seat 18 is provided with a pivoting groove 181, and two side walls of the pivoting groove 181 are pivoted with the tension detection assembly 4, so that the whole connecting assembly 1 is more stable when the boom 5 is connected, and the weight detection of the tension detection assembly 4 is more accurate.
As an alternative embodiment, the pin shaft sensor 3 is detachably connected to the connection assembly 1, for example, by providing a connection key and a plug at two ends of the pin shaft sensor 3. One end of the connecting assembly 1 is detachably connected with the crane boom 5 and can be connected through a pin shaft, and the end part of the pin shaft is provided with a connecting key, a plug pin and other structures; one end of the tension detection assembly 4 is detachably connected with the connecting assembly 1 and can be connected through a pin shaft, and the end part of the pin shaft is provided with a connecting key, a plug pin and other structures; the other end of the tension detection assembly 4 is detachably connected with the crane boom 5 and can be connected through a pin shaft, and the end part of the pin shaft is provided with a connecting key, a plug pin and other structures; pin shaft type sensor 3 can be dismantled with coupling assembling 1 and be connected, and coupling assembling 1's one end is used for dismantling with jib loading boom 5 and is connected, and tension detecting component 4's one end can be dismantled with coupling assembling 1 and be connected, and tension detecting component 4's the other end is used for dismantling with jib loading boom 5 and be connected, has all improved weight detection mechanism's easy dismounting nature, has further reduced maintenance time, has further reduced cost of maintenance.
As an alternative embodiment, different from the above embodiment, a connection portion of the coupling assembly 1 pivotally connected to the tension detection assembly 4 is located between a connection portion of the coupling assembly 1 for pivotally connecting to the boom 5 and a connection portion of the boom 5 pivotally connected to the pin shaft sensor 3, so that the connection portion of the coupling assembly 1 pivotally connected to the tension detection assembly 4 is located at a relatively central position of the coupling assembly 1, and an acting force transmitted by the hoisting rope can be reduced at the tension detection assembly 4, so that the weight detection mechanism is more suitable for a hoisting device with a larger hoisting capacity.
The utility model also provides a weight limiter which comprises a switch circuit, wherein the switch circuit is used for disconnecting the power supply of the driving device of the crane boom 5, and the weight limiter comprises the weight detection mechanism, and the pin shaft type sensor 3 and the tension detection component 4 are electrically connected with the switch circuit. The specific structure of the weight detection mechanism refers to the above embodiments, and since the weight limiter adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The utility model also provides hoisting equipment which comprises a crane boom and the weight limiter. The pin shaft type sensor 3 and the tension detection assembly 4 convert the load weight into an electric signal, and the numerical value of the load is indicated through operation and amplification. And when the loading load reaches the rated load of a preset multiple, sending an overload alarm signal and cutting off the action in the ascending direction. The hoisting equipment is tested through the joint of all the parts and the actual work together, has good test effect, basically meets the requirements of sensitivity, safety and stability during working, and can be quickly disassembled, maintained and installed when needed. The maintenance duration is reduced, the maintenance efficiency is improved, and the consumption of manpower and material resources and the expenditure of capital are saved. The specific structure of the weight limiter refers to the above embodiments, and since the hoisting device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A weight detection mechanism is characterized by comprising a connecting assembly, a pulley, a pin shaft type sensor and a tension detection assembly, wherein one end of the connecting assembly is used for being pivoted with a crane boom; the pulley is used for connecting a hoisting rope, the pulley is sleeved on the pin shaft type sensor, and the pin shaft type sensor is connected with the connecting component; one end of the tension detection assembly is pivoted with the connecting assembly, and the other end of the tension detection assembly is pivoted with the crane boom.
2. The weight-sensing mechanism according to claim 1, wherein the connecting assembly includes a first connecting portion, a second connecting portion and a third connecting portion, the first connecting portion is pivotally connected to the boom, the second connecting portion is pivotally connected to the pin-type sensor, and the third connecting portion is pivotally connected to the tension-sensing assembly.
3. The weight detecting mechanism according to claim 2, wherein a ratio of a distance from the first connecting portion to the second connecting portion to a distance from the second connecting portion to the third connecting portion is greater than 1.3 and less than 2.
4. The weight sensing mechanism of claim 1, wherein the connection of the coupling assembly to the tension sensing assembly is between the connection of the coupling assembly to the boom and the connection of the boom to the pin-type sensor.
5. The weight sensing mechanism of claim 1, wherein the connecting assembly includes a first connecting body and a second connecting body arranged side by side, a mounting gap is provided between the first connecting body and the second connecting body, one end of the pin-type sensor is connected to the first connecting body, and the other end of the pin-type sensor is connected to the second connecting body; the pulley is at least partially disposed within the mounting gap.
6. The weight-sensing mechanism according to claim 5, wherein a reinforcing member is provided at an outer side of the first connecting body and/or an outer side of the second connecting body, and the reinforcing member is connected to the pin-type sensor.
7. The weight detecting mechanism of claim 5, wherein the connecting assembly is provided with a pivot seat, and the first connecting body and the second connecting body are fixedly connected with the pivot seat; the pin joint seat is provided with a pin joint groove, and two side walls of the pin joint groove are in pin joint with the tension detection assembly.
8. The weight sensing mechanism of claim 5, wherein the pin-type sensor is removably coupled to the coupling assembly, the coupling assembly having one end for removable coupling to the boom; one end of the tension detection assembly is detachably connected with the connecting assembly, and the other end of the tension detection assembly is detachably connected with the crane boom; and/or the first connecting body and the second connecting body comprise channel steel, and the slotted side of the channel steel is arranged outwards; and/or the tension detection assembly comprises a force measuring ring.
9. A weight limiter comprising a switch circuit for disconnecting the power supply of a drive device of a boom, characterized by comprising the weight detecting mechanism according to any one of claims 1 to 8, wherein the pin sensor and the tension detecting member are electrically connected to the switch circuit.
10. A lifting device comprising a crane arm, further comprising a weight limiter as in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220077060.3U CN216807848U (en) | 2022-01-12 | 2022-01-12 | Weight detection mechanism, weight limiter and hoisting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220077060.3U CN216807848U (en) | 2022-01-12 | 2022-01-12 | Weight detection mechanism, weight limiter and hoisting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216807848U true CN216807848U (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220077060.3U Active CN216807848U (en) | 2022-01-12 | 2022-01-12 | Weight detection mechanism, weight limiter and hoisting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216807848U (en) |
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- 2022-01-12 CN CN202220077060.3U patent/CN216807848U/en active Active
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