CN217627245U

CN217627245U - High pulley of security

Info

Publication number: CN217627245U
Application number: CN202221498187.9U
Authority: CN
Inventors: 左良峰; 马周浩
Original assignee: Ningbo Dongfang Pulley Co ltd
Current assignee: Ningbo Dongfang Pulley Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-10-21
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a high pulley of security. The device comprises a concave seat, wherein a connecting ring is fixedly arranged at the top of the concave seat, a round rod is rotatably arranged on the surface of the concave seat, a pulley is sleeved on the surface of the round rod, a pressing cylinder is arranged on the surface of the concave seat, and a locking mechanism is arranged inside the pressing cylinder; locking mechanism includes first trapezoidal piece, two second trapezoidal pieces, two connecting blocks and two expanding spring, first trapezoidal piece and threaded rod threaded connection, two equal slidable mounting of second trapezoidal piece is in the clamping cylinder, and the hoist during operation, if the goods appears and drive the rope suddenly and carry out the quick whereabouts on the surface of pulley, through the locking mechanism who sets up, can carry on spacingly to the pulley, prevent that the pulley from rotating again, then die the rope again, make the goods no longer fall, carry out the advantage that operation personnel personal safety protected to ground.

Description

High pulley of security

Technical Field

The utility model relates to a pulley technical field, concretely relates to high pulley of security.

Background

In mechanics, a typical pulley is a round wheel that can rotate around a central shaft, and a groove is formed in the circumference of the round wheel, and a rope is wound in the groove, and either end of the rope is pulled by force, so that the friction between the rope and the round wheel can drive the round wheel to rotate around the central shaft.

However, in the prior art, the crane often uses the pulley to assist in the using process, but the crane often has the situation that the goods suddenly drive the rope to fall off rapidly on the surface of the pulley during operation, and once the goods fall off from the pulley, the personnel safety of the operating personnel on the ground is greatly damaged.

Accordingly, those skilled in the art have provided a pulley having high safety to solve the problems of the background art as described above.

Disclosure of Invention

An object of the utility model is to provide a high pulley of security, hoist at the during operation, if appear the goods drive the rope suddenly and carry out when falling fast on the surface of pulley, through the locking mechanism who sets up, can carry on spacingly to the pulley, prevent that the pulley from rotating again, then die the rope again, make the goods no longer fall, carry out the advantage that the operation personnel personal safety carried out the protection on ground to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the device comprises a concave seat, wherein a connecting ring is fixedly arranged at the top of the concave seat, a round rod is rotatably arranged on the surface of the concave seat, a pulley is sleeved on the surface of the round rod, a pressing cylinder is arranged on the surface of the concave seat, and a locking mechanism is arranged inside the pressing cylinder;

locking mechanism includes first trapezoidal piece, two second trapezoidal pieces, two connecting blocks and two expanding spring, first trapezoidal piece and threaded rod threaded connection, two the equal slidable mounting of second trapezoidal piece is in the compression cylinder, two the second trapezoidal piece all with first trapezoidal piece looks adaptation, two outside the one end that the second trapezoidal piece was kept away from each other all extended the compression cylinder, two the equal fixed cover of connecting block is established on the surface that corresponds the second trapezoidal piece, two the connecting block all with compression cylinder sliding connection, two the equal sliding cover of expanding spring is established on the surface that corresponds first trapezoidal piece, expanding spring's one end and second trapezoidal piece fixed connection, expanding spring's the other end and compression cylinder fixed connection.

The pulley is characterized in that a plurality of limiting holes are formed in the surface of the pulley, and an anti-skidding sleeve is sleeved on the surface of the pulley.

The surface of the concave seat is fixedly provided with two electric telescopic rods, the output ends of the two electric telescopic rods are fixedly connected with the pressing cylinder, and the surface of the pressing cylinder is provided with a rotating speed sensor.

The surface fixing of the pressing cylinder is provided with a concave block, the surface fixing of the concave block is provided with a motor, the output end of the motor is fixedly provided with a threaded rod, and the bottom end of the threaded rod extends into the pressing cylinder and is rotatably connected with the pressing cylinder.

The surface of the end that the second trapezoidal piece kept away from each other is all fixed mounting has the connecting seat, the surface rotation of connecting seat installs the connecting rod, the fixed surface cover of connecting rod is equipped with the gyro wheel.

Two moving grooves are formed in the surface of the concave block, an L-shaped limiting rod is installed in each moving groove in a sliding mode, and one end, far away from the moving grooves, of each L-shaped limiting rod extends into the pressing cylinder and is fixedly connected with the first trapezoid block.

To sum up, owing to adopted above-mentioned technique, the beneficial effects of the utility model are that:

the utility model discloses a set up locking mechanism, the motor drives the threaded rod and rotates, under the effect of shifting chute and L type gag lever post, the threaded rod drives first trapezoidal piece downstream, first trapezoidal piece drives two second trapezoidal pieces and is the motion of keeping away from each other, under connecting block and expanding spring's effect, second trapezoidal piece can carry out steady removal in the inside of clamping cylinder, when the gyro wheel on connecting seat surface contacts with the pulley, the gyro wheel can rotate on the surface of clamping cylinder, when two second trapezoidal pieces insert the spacing downthehole of correspondence respectively, alright carry on spacingly to the pulley, prevent that the pulley from rotating again, at this moment the surface of clamping cylinder also can die push down the rope, make the goods no longer fall.

Drawings

Fig. 1 is a schematic view of a partial structure of a pulley with high safety according to the present invention;

FIG. 2 is a schematic view of the structural connection between the motor and the threaded rod in the pulley according to the present invention with high safety;

FIG. 3 is a schematic view of the structural connection between the connecting rod and the roller of the pulley with high safety according to the present invention;

fig. 4 is the utility model relates to a high pulley middling pressure section of thick bamboo inside section structure connection schematic diagram of security.

In the figure: 1. a concave seat; 2. a connecting ring; 3. a round bar; 4. a pulley; 5. a limiting hole; 6. an anti-slip sleeve; 7. an electric telescopic rod; 8. a compression cylinder; 9. a concave shape; 10. a motor; 11. a threaded rod; 12. a locking mechanism; 1201. a first trapezoidal block; 1202. a second trapezoidal block; 1203. connecting blocks; 1204. a tension spring; 13. a connecting seat; 14. a connecting rod; 15. a roller; 16. a moving groove; 17. an L-shaped limiting rod; 18. a rotation speed sensor.

Detailed Description

To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the 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. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

The utility model provides a high-safety pulley, as shown in figures 1-4, which comprises a concave seat 1, wherein a connecting ring 2 is fixedly arranged at the top of the concave seat 1, a round rod 3 is rotatably arranged on the surface of the concave seat 1, a pulley 4 is sleeved on the surface of the round rod 3, a pressing cylinder 8 is arranged on the surface of the concave seat 1, and a locking mechanism 12 is arranged in the pressing cylinder 8;

the locking mechanism 12 comprises a first trapezoidal block 1201, two second trapezoidal blocks 1202, two connecting blocks 1203 and two telescopic springs 1204, the first trapezoidal block 1201 is in threaded connection with a threaded rod 11, the two second trapezoidal blocks 1202 are both slidably mounted in the pressing cylinder 8, the two second trapezoidal blocks 1202 are both adapted to the first trapezoidal block 1201, one ends, away from each other, of the two second trapezoidal blocks 1202 extend out of the pressing cylinder 8, the two connecting blocks 1203 are both fixedly sleeved on the surface corresponding to the second trapezoidal blocks 1202, the two connecting blocks 1203 are both slidably connected with the pressing cylinder 8, the two telescopic springs 1204 are both slidably sleeved on the surface corresponding to the first trapezoidal block 1201, one ends of the telescopic springs 1204 are fixedly connected with the second trapezoidal blocks 1202, and the other ends of the telescopic springs 1204 are fixedly connected with the pressing cylinder 8.

As shown in fig. 1, a plurality of limiting holes 5 are formed in the surface of the pulley 4, and an anti-slip sleeve 6 is sleeved on the surface of the pulley 4.

Through the mutual cooperation of pulley 4 and antiskid cover 6, through the antiskid cover 6 of establishing at the surface cover of pulley 4, can effectually protect the surface of pulley 4, direct friction when avoiding the rope to send out with the surface of pulley 4, and lead to the life of pulley 4 to subtract the weak point.

As shown in fig. 1, two electric telescopic rods 7 are fixedly mounted on the surface of the concave seat 1, the output ends of the two electric telescopic rods 7 are fixedly connected with a pressing cylinder 8, and a rotation speed sensor 18 is arranged on the surface of the pressing cylinder 8.

Through mutually supporting of electric telescopic handle 7 and clamping cylinder 8, two electric telescopic handle 7 can drive clamping cylinder 8 and move down, conveniently make clamping cylinder 8 descend suitable position, compress tightly pulley 4's surperficial rope.

As shown in fig. 1, a concave block 9 is fixedly mounted on the surface of the pressing cylinder 8, a motor 10 is fixedly mounted on the surface of the concave block 9, a threaded rod 11 is fixedly mounted at the output end of the motor 10, and the bottom end of the threaded rod 11 extends into the pressing cylinder 8 and is rotatably connected with the pressing cylinder 8.

Through mutually supporting of motor 10 and threaded rod 11, motor 10 drives threaded rod 11 and rotates, and threaded rod 11 drives first trapezoidal piece 1201 and moves down, and first trapezoidal piece 1201 drives two second trapezoidal pieces 1202 and does the motion of keeping away from each other, conveniently makes two second trapezoidal pieces 1202 insert the spacing hole 5 that corresponds respectively in, carry on spacingly to pulley 4.

As shown in fig. 1, the surfaces of the ends of the two second trapezoidal blocks 1202 which are far away from each other are fixedly provided with a connecting seat 13, the surface of the connecting seat 13 is rotatably provided with a connecting rod 14, and the surface of the connecting rod 14 is fixedly sleeved with a roller 15.

Through mutually supporting of connecting seat 13 and gyro wheel 15, when gyro wheel 15 on connecting seat 13 surface contacted with pulley 4, gyro wheel 15 can rotate on compression cylinder 8's surface, played the buffering effect, conveniently made two spacing holes 5 that insert that second trapezoidal piece 1202 can be smooth in.

As shown in fig. 1, two moving grooves 16 are formed in the surface of the concave block 9, L-shaped limiting rods 17 are slidably mounted in the two moving grooves 16, and one ends of the L-shaped limiting rods 17 far away from the moving grooves 16 extend into the pressing cylinder 8 and are fixedly connected with the first trapezoidal block 1201.

Through the mutual cooperation of the movable groove 16 and the L-shaped limiting rod 17, the first trapezoidal block 1201 can be limited, and the first trapezoidal block 1201 is prevented from slipping on the threaded rod 11 and affecting the locking effect of the pulley 4.

The structure principle is as follows: the prior art of the rotation speed sensor with the model number of SZCB01 has the advantages that the connecting ring 2 at the top of the concave seat 1 is hung at the corresponding position, the surface of the pulley 4 is wound with a rope, one end of the rope is fixedly connected with the goods to be lifted, the other end of the rope is fixedly connected with the transmission end of the crane, the crane is started to pull the rope to move on the surface of the pulley 4, when the crane works, if the goods suddenly and rapidly fall, the rotation speed sensor 18 of the pressure cylinder 8 senses the rotation speed of the pulley 4, and at this time, the two electric telescopic rods 7 can drive the pressing cylinder 8 to move downwards, the motor 10 can be started when the two electric telescopic rods 7 are started, the motor 10 drives the threaded rod 11 to rotate, under the action of the moving groove 16 and the L-shaped limiting rod 17, the threaded rod 11 drives the first trapezoidal block 1201 to move downwards, the first trapezoidal block 1201 drives the two second trapezoidal blocks 1202 to move away from each other, under the action of the connecting block 1203 and the telescopic spring 1204, the second trapezoidal block 1202 can move smoothly inside the compression cylinder 8, when the roller 15 on the surface of the connecting seat 13 is contacted with the pulley 4, the roller 15 rotates on the surface of the pressing cylinder 8, when the two second trapezoidal blocks 1202 are respectively inserted into the corresponding limiting holes 5, the pulley 4 can be limited to prevent the pulley 4 from rotating again, at this time, the surface of the pressing cylinder 8 can also be dead to press the rope, so that the goods can not fall down, when the fault is cleared, the operation is reversed, the first trapezoidal block 1201 is moved away from the two second trapezoidal blocks 1202, under the action of the extension spring 1204, the two second trapezoidal blocks 1202 are extracted from the corresponding limiting holes 5 into the pressing cylinder 8, the limiting of the pulley 4 is stopped, and the pulley 4 can continue to assist the crane in lifting.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. The utility model provides a high pulley of security, includes concave type seat, its characterized in that: the top of the concave seat is fixedly provided with a connecting ring, the surface of the concave seat is rotatably provided with a round rod, the surface of the round rod is sleeved with a pulley, the surface of the concave seat is provided with a pressing cylinder, and a locking mechanism is arranged inside the pressing cylinder;

2. The high safety pulley according to claim 1, wherein: a plurality of limiting holes are formed in the surface of the pulley, and an anti-skidding sleeve is sleeved on the surface of the pulley.

3. The safety-safe pulley according to claim 1, wherein: two electric telescopic rods are fixedly mounted on the surface of the concave seat, the output ends of the two electric telescopic rods are fixedly connected with the pressing cylinder, and a rotating speed sensor is arranged on the surface of the pressing cylinder.

4. The safety-safe pulley according to claim 1, wherein: the surface fixing of compression cylinder installs concave type piece, the surface fixing of concave type piece installs the motor, the output fixed mounting of motor has the threaded rod, the bottom of threaded rod extends to in the compression cylinder and is connected with the rotation of compression cylinder.

5. The safety-safe pulley according to claim 1, wherein: two the equal fixed mounting in surface of the one end that the second trapezoidal piece kept away from each other has the connecting seat, the surface rotation of connecting seat installs the connecting rod, the fixed surface cover of connecting rod is equipped with the gyro wheel.

6. The high safety pulley according to claim 4, wherein: two moving grooves are formed in the surface of the concave block, an L-shaped limiting rod is arranged in each moving groove in a sliding mode, and one end, far away from the moving grooves, of each L-shaped limiting rod extends into the pressing cylinder and is fixedly connected with the first trapezoid block.