CN112978603A

CN112978603A - Flexible multipoint centralized lifting device

Info

Publication number: CN112978603A
Application number: CN202110408538.6A
Authority: CN
Inventors: 张子瑾; 张建立; 卢群会; 宋立云; 李杰峰
Original assignee: Hebei Chuanglian Machinery Manufacturing Co ltd
Current assignee: Hebei Chuanglian Machinery Manufacturing Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-06-18

Abstract

The invention relates to the technical field of lifting machines, in particular to a flexible multipoint centralized lifting device. The lifting device is arranged on the round frame, the winding and unwinding device is arranged on one side of the round frame, and the transmission device is arranged between the round frame and the winding and unwinding device; the winding and unwinding device comprises a winding drum, a frame body, a speed reducer and a braking device; the shafts at the two ends of the winding drum penetrate through the frame body and then are connected with the frame body bearing; one shaft of the speed reducer is fixedly connected with the shaft of the winding drum; the braking device is arranged on one side of the frame body; the multi-point lifting is adopted, so that the downward force of an object can be balanced, and the rope is not easy to break; the outer ring frame is used for lifting the object, so that the state and the position of the lifted object are not easy to change; the pressure of the motor can be reduced by the balancing weight, and the motor is not easy to damage; the electric push rod can ensure that the lock can be locked after being lifted, and no danger can occur.

Description

Flexible multipoint centralized lifting device

Technical Field

The invention relates to the technical field of lifting machines, in particular to a flexible multipoint centralized lifting device.

Background

When a plurality of existing large-scale equipment and steel structures are installed, equipment parts and the steel structures need to be lifted by means of a lifting machine; however, the safety of the existing hoisting machine has problems, and the problems of cylinder explosion, unhooking or rope breakage are easily caused; moreover, most of the existing lifting machines are single-point lifting, and the objects cannot be kept in a stable state or at an appointed position after lifting, so that the lifting machines are difficult to install or adjust; the service life of the lifting machine can be influenced by long-time use or overload use of single-point lifting; not only waste time and manpower, still reduced work efficiency.

Disclosure of Invention

The invention aims to solve the technical problems, and provides a flexible multipoint centralized lifting device aiming at the technical defects, which adopts multipoint lifting to ensure that the downward force of an object can be balanced and the rope is not easy to break; the outer ring frame is used for lifting the object, so that the state and the position of the lifted object are not easy to change; the pressure of the motor can be reduced by the balancing weight, and the motor is not easy to damage; the electric push rod can ensure that the lock can be locked after being lifted, and no danger can occur.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the lifting device is arranged on the round frame, the winding and unwinding device is arranged on one side of the round frame, and the transmission device is arranged between the round frame and the winding and unwinding device; the winding and unwinding device comprises a winding drum, a frame body, a speed reducer and a braking device; the shafts at the two ends of the winding drum penetrate through the frame body and then are connected with the frame body bearing; one shaft of the speed reducer is fixedly connected with the shaft of the winding drum; the braking device is arranged on one side of the frame body.

Further optimizing the technical scheme, the braking device comprises a motor, a brake wheel coupler and a brake; the shaft of the motor is connected to the other shaft of the speed reducer through a brake wheel coupler; the brake is arranged on the outer ring of the brake wheel coupler.

The technical scheme is further optimized, and the brake adopts a hydraulic push rod brake; the speed reducer adopts a planetary speed reducer.

Further optimizing the technical scheme, the transmission device comprises a first steel wire rope, a fixed pulley block, a first guide pulley block and a second guide pulley block; the winding drum is provided with a spiral groove; one end of the first steel wire rope is fixed on the winding drum, and the first steel wire rope is wound in the spiral groove; and the other end of the steel wire rope penetrates through the fixed pulley block, the first guide pulley block and the second guide pulley block and then is fixedly arranged on the lifting device.

Further optimizing the technical scheme, the lifting device comprises a plurality of ring frames, a baffle, a plurality of first pulleys, a tension adjusting device, a bolt device and a counterweight device; the baffle plates are welded at the upper end and the lower end of the ring frame; the upper side and the lower side of each circular frame and each ring frame are respectively provided with a pulley I, and the other end of the steel wire rope passes through the pulleys I on the upper side and the lower side and then is fixed on the tension adjusting device; the innermost layer of the ring frame is in sliding fit on the round frame; two adjacent ring frames are in sliding fit; the counterweight device is arranged on the round frame; the ring frames are respectively provided with a bolt device; the tension adjusting device is installed on the first pulley.

Further optimizing the technical scheme, the tension adjusting device comprises a connecting piece, a tension sensor and a turnbuckle; the other end of the steel wire rope is fixedly arranged at the top end of the turnbuckle; a tension sensor is arranged at the bottom end of the turnbuckle; the tension sensor is installed on the first pulley through a connecting piece.

Further optimizing the technical scheme, the counterweight device comprises a counterweight block, a second steel wire rope and two second pulleys; the balancing weight is in sliding fit with the round frame; the two pulleys II are respectively arranged on the balancing weight and the round frame; and one end of the steel wire rope is fixed on the ring frame, and the other end of the steel wire rope is fixed on the balancing weight.

Further optimizing the technical scheme, the bolt device comprises an electric push rod and a clamping block; the electric push rod is arranged on the ring frame; the clamping block is arranged on the electric push rod; the clamping block is clamped with the baffle.

According to the technical scheme, the number of the spiral grooves and the number of the first steel wire ropes are multiple, the fixed pulley block, the first guide pulley block and the second guide pulley block are composed of a plurality of fixed pulleys, a first guide wheel and a second guide wheel, and the number of the spiral grooves and the number of the first steel wire ropes are the same as the number of the fixed pulleys, the first guide wheel and the second guide wheel.

Further optimizing the technical scheme, two groups of motors and two groups of braking devices are symmetrically arranged on the two retracting devices; an incremental encoder is arranged on the motor.

Compared with the prior art, the invention has the following advantages:

1. the lifting ring frame is driven to lift by a plurality of steel wire ropes, so that the structure is beneficial to ensuring that the safety of lifting equipment is improved;

2. the structure is favorable for ensuring that the first steel wire ropes are stressed uniformly and are not easy to break through the observation of the tension sensor and the adjustment of the turnbuckles;

3. the direction of the first steel wire rope is changed through the first guide pulley block and the second guide pulley block, so that the structure is favorable for ensuring that the direction of the steel wire rope is convenient to adjust, and the power source is arranged outside a lifting object;

4. the structure is beneficial to ensuring that the lifting load is reduced during lifting through the opposite movement directions of the balancing weight and the ring frame;

5. the clamping block supports the ring frame, so that the structure is favorable for ensuring that the lifted object is not easy to collapse.

Drawings

Fig. 1 is an oblique bottom view of the general structure of a flexible multipoint centralized lifting device.

Fig. 2 is an oblique bottom view of a flexible multi-point centralized lifting device transmission device.

Fig. 3 is a structure diagram of a winding device of a flexible multipoint centralized lifting device.

Fig. 4 is a schematic structural diagram of a lifting device of a flexible multipoint centralized lifting device.

Fig. 5 is a schematic structural diagram of a counterweight device of a flexible multipoint centralized lifting device.

Fig. 6 is a structural schematic diagram of a tension adjusting device of a flexible multipoint centralized lifting device.

Fig. 7 is a structural schematic diagram of a latch device of a flexible multipoint centralized lifting device.

Fig. 8 is a top view of a flexible multi-point centralized lifting device transmission device.

Fig. 9 is a schematic diagram of lifting of a plurality of ring frames of a flexible multipoint centralized lifting device.

In the figure: A. a lifting device; B. a retracting device; C. a transmission device; D. a braking device; E. a tension adjusting device; F. a latch device; G. a counterweight device; 1. a round frame; 2. a reel; 3. a frame body; 4. a speed reducer; 5. a motor; 6. a brake wheel coupling; 7. a brake; 8. a first steel wire rope; 9. a fixed pulley block; 10. a first guide pulley block; 11. a second guide pulley block; 12. a helical groove; 13. a ring frame; 15. a first pulley; 16. a connecting member; 17. a tension sensor; 18. a turnbuckle; 19. a balancing weight; 20. a second steel wire rope; 21. a second pulley; 22. an electric push rod; 23. and (7) clamping blocks.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear and complete, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the detailed description below. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-9, the device comprises a round frame 1, a lifting device a arranged on the round frame 1, a retracting device B arranged on one side of the round frame 1, and a transmission device C arranged between the round frame 1 and the retracting device B; the winding and unwinding device B comprises a winding drum 2, a frame body 3, a speed reducer 4 and a braking device D; the shafts at the two ends of the winding drum 2 penetrate through the frame body 3 and then are connected with the frame body 3 through bearings; one shaft of the speed reducer 4 is fixedly connected with the shaft of the winding drum 2; the braking device D is arranged on one side of the frame body 3; the braking device D comprises a motor 5, a brake wheel coupler 6 and a brake 7; the shaft of the motor 5 is connected to the other shaft of the speed reducer 4 through a brake wheel coupler 6; the brake 7 is arranged on the outer ring of the brake wheel coupler 6; the brake 7 adopts a hydraulic push rod brake; the speed reducer 4 adopts a planetary speed reducer; the transmission device C comprises a first steel wire rope 8, a fixed pulley block 9, a first guide pulley block 10 and a second guide pulley block 11; the winding drum 2 is provided with a spiral groove 12; one end of the first steel wire rope 8 is fixed on the winding drum 2, and the first steel wire rope 8 is wound in the spiral groove 12; the other end of the first steel wire rope 8 penetrates through the fixed pulley block 9, the first guide pulley block 10 and the second guide pulley block 11 and then is fixedly installed on the lifting device A; the lifting device A comprises a plurality of ring frames 13, a baffle plate 14, a plurality of first pulleys 15, a tension adjusting device E, a bolt device F and a counterweight device G; the baffle plates 14 are welded at the upper end and the lower end of the ring frame 13; pulleys (15) are respectively arranged on the upper side and the lower side of each circular frame (1) and each ring frame (13), and the other end of the steel wire rope (8) penetrates through the pulleys (15) on the upper side and the lower side and then is fixed on a tension adjusting device E; the innermost layer of the ring frame 13 is in sliding fit on the round frame 1; two adjacent ring frames 13 are in sliding fit; the counterweight device G is arranged on the round frame 1; a plurality of the ring frames 13 are respectively provided with a bolt device F; the tension adjusting device E is arranged on the first pulley 15; the tension adjusting device E comprises a connecting piece 16, a tension sensor 17 and a turnbuckle 18; the other end of the first steel wire rope 8 is fixedly arranged at the top end of the turnbuckle 18; a tension sensor 17 is arranged at the bottom end of the screw thread 18; the tension sensor 17 is arranged on the first pulley 15 through a connecting piece 16; the counterweight device G comprises a counterweight block 19, a second steel wire rope 20 and two second pulleys 21; the balancing weight 19 is matched on the round frame 1 in a sliding way; the two second pulleys 21 are respectively arranged on the balancing weight 19 and the round frame 1; one end of the second steel wire rope 20 is fixed on the ring frame 13, and the other end of the second steel wire rope is fixed on the balancing weight 19; the bolt device F comprises an electric push rod 22 and a clamping block 23; the electric push rod 22 is arranged on the ring frame 13; the clamping block 23 is arranged on the electric push rod 22; the clamping block 23 is clamped with the baffle 14; the number of the spiral grooves 12 and the number of the first guide pulley blocks 8 are the same as that of the plurality of fixed pulleys, the number of the first guide pulleys and the number of the second guide pulleys, and the number of the spiral grooves 12 and the number of the first guide pulley blocks 8 are also the same as that of the plurality of fixed pulleys; two groups of motors 5 and two groups of braking devices D are symmetrically arranged on the retraction device B; an incremental encoder is arranged on the motor 5.

When the device is used, as shown in the figures 1 to 9, firstly, the device is installed, the retraction device B, the transmission device C and the round frame 1 are installed on the ground according to the lifting position of an object, as shown in the figure 1, as the shapes of the plurality of ring frames 13 and the round frame 1 are the same, the ring frames 13 are hidden in the figures 1 and 4, the lifting of the first pulley 15 is convenient to check, and the ring frames 13 are mainly used for sliding lifting and fixing the first pulley 15; then starting the motor 5 and the brake 7, wherein the brake 7 adopts a hydraulic push rod brake to ensure that the winding drum 2 can be completely locked; after the brake 7 is electrified, the brake wheel coupler 6 is released, the motor 5 drives the brake wheel coupler 6 to rotate, the brake wheel coupler 6 drives the speed reducer 4 to start working, the speed reducer 4 adopts a planetary speed reducer, the output torque is ensured to be increased, and the bearing capacity is higher; then the speed reducer 4 drives the winding drum 2 to rotate on the frame body 3, and the spiral groove 12 on the winding drum 2 is used for winding the first steel wire rope 8; the first steel wire rope 8 moves on the fixed pulley block 9, the first guide pulley block 10 and the second guide pulley block 11, and the fixed pulley block 9, the first guide pulley block 10 and the second guide pulley block 11 are used for changing the direction of the first steel wire rope 8; each steel wire rope I8 passes through each fixed pulley, each guide wheel I and each guide wheel II, then enters the round frame 1 and each pulley I15 on each ring frame 13, and is fixed on the tension sensor 17, so that the tension of the steel wire rope I8 can be conveniently adjusted; a tension sensor 17 is arranged on a first pulley 15 on the outermost ring frame 13 through a connecting piece 16; the tension sensor 17 can be observed during lifting, the tension on each steel wire rope I8 can be seen through the tension sensor 17, and the tension on each steel wire rope I8 can be adjusted through adjusting the turnbuckles 18, so that the stress points of each steel wire rope I8 are uniform; in all the drawings of the application, three ring frames 13 are used for displaying, but different numbers of ring frames 13 can be arranged at different heights for lifting; in fig. 9, it can be seen that the movement of the three ring frames 13 first drives the outer ring frame 13 to rise, and when the bottom of the outer ring frame 13 rises to contact with the top of the middle ring frame 13, drives the middle ring frame 13 to rise; after the bottom of the middle ring frame 13 rises to contact with the top of the inner ring frame 13, the inner ring frame 13 is driven to rise, and at the moment, the object is lifted by the outer ring frame 13; after the elevator is lifted to a designated position, the motor 5 is powered off, and the brake 7 is powered off to lock the brake wheel coupler 6; as can be seen from fig. 7 and fig. 9, the electric push rod 22 is powered to push the latch 23 out, and the latch 23 contacts with the top of the ring frame 13 to support the ring frame 13, so as to ensure that the ring frame 13 cannot drop accidentally; when the ring frame 13 is lifted, as can be seen from fig. 5, the second steel wire rope 20 can be connected to the ring frame 13 after passing through the second two pulleys 21, and the ring frame 13 is hidden in the drawing because the ring frame 13 influences the observation of the winding of the second steel wire rope 20; the ring frame 13 ascends to drive the second steel wire rope 20 to move on the second pulley 21, the second steel wire rope 20 drives the counterweight block 19 to descend, and meanwhile, the distance between the two second pulleys 21 becomes longer; when the ring frame 13 descends, the counterweight block 19 ascends, and the distance between the two pulleys 21 is shortened; the acting forces of the balancing weight 19 and the ring frame 13 are opposite, so that the lifting load is reduced, and the safety coefficient of the whole equipment is increased; motor 5 and speed reducer 4 can use simultaneously in 2 both sides of reel, sets up the increment encoder on motor 5, can get and protect two motor 5 synchro-driven, reduces to rise the load.

The whole equipment can ensure that the object can be flexibly and uniformly lifted forcibly at multiple points, the safety during working is improved, the stability of the object in the air can be ensured after the object is lifted, and the installation is convenient; when lifting an object, the service life of the whole equipment can be ensured to be longer by adopting the speed reducer, the double-motor drive, the brake and the balancing weight.

It should be understood that: the foregoing detailed description of the invention is merely exemplary in nature and is not intended to limit the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a play to rise device in flexible multiple spot is concentrated which characterized in that: comprises a round frame (1), a lifting device (A) arranged on the round frame (1), a retracting device (B) arranged on one side of the round frame (1), and a transmission device (C) arranged between the round frame (1) and the retracting device (B); the winding and unwinding device (B) comprises a winding drum (2), a frame body (3), a speed reducer (4) and a braking device (D); shafts at two ends of the winding drum (2) penetrate through the frame body (3) and then are connected with a bearing of the frame body (3); one shaft of the speed reducer (4) is fixedly connected with the shaft of the winding drum (2); the braking device (D) is arranged on one side of the frame body (3).

2. The flexible multipoint centralized lifting device as claimed in claim 1, wherein: the brake device (D) comprises a motor (5), a brake wheel coupler (6) and a brake (7); the shaft of the motor (5) is connected to the other shaft of the speed reducer (4) through a brake wheel coupler (6); the brake (7) is arranged on the outer ring of the brake wheel coupler (6).

3. A flexible multipoint centralized lifting device as claimed in claim 2, wherein: the brake (7) adopts a hydraulic push rod brake; the speed reducer (4) adopts a planetary speed reducer.

4. The flexible multipoint centralized lifting device as claimed in claim 1, wherein: the transmission device (C) comprises a first steel wire rope (8), a fixed pulley block (9), a first guide pulley block (10) and a second guide pulley block (11); the winding drum (2) is provided with a spiral groove (12); one end of the first steel wire rope (8) is fixed on the winding drum (2), and the first steel wire rope (8) is wound in the spiral groove (12); the other end of the first steel wire rope (8) penetrates through the fixed pulley block (9), the first guide pulley block (10) and the second guide pulley block (11) and then is fixedly installed on the lifting device (A).

5. A flexible multipoint centralized lifting device as claimed in claim 4, wherein: the lifting device (A) comprises a plurality of ring frames (13), a baffle (14), a plurality of first pulleys (15), a tension adjusting device (E), a bolt device (F) and a counterweight device (G); the baffle plates (14) are welded at the upper end and the lower end of the ring frame (13); pulleys (15) are respectively installed on the upper side and the lower side of each circular frame (1) and each ring frame (13), and the other end of the steel wire rope (8) penetrates through the pulleys (15) on the upper side and the lower side and then is fixed on a tension adjusting device (E); the innermost layer of the ring frame (13) is in sliding fit on the round frame (1); two adjacent ring frames (13) are in sliding fit; the counterweight device (G) is arranged on the round frame (1); the ring frames (13) are respectively provided with a bolt device (F); the tension adjusting device (E) is arranged on the first pulley (15).

6. A flexible multipoint centralized lifting device as claimed in claim 5, wherein: the tension adjusting device (E) comprises a connecting piece (16), a tension sensor (17) and a turnbuckle (18); the other end of the first steel wire rope (8) is fixedly arranged at the top end of the turnbuckle (18); a tension sensor (17) is arranged at the bottom end of the screw thread (18); the tension sensor (17) is arranged on the first pulley (15) through a connecting piece (16).

7. A flexible multipoint centralized lifting device as claimed in claim 5, wherein: the counterweight device (G) comprises a counterweight block (19), a second steel wire rope (20) and two second pulleys (21); the balancing weight (19) is in sliding fit on the round frame (1); the two second pulleys (21) are respectively arranged on the balancing weight (19) and the round frame (1); one end of the second steel wire rope (20) is fixed on the ring frame (13), and the other end of the second steel wire rope is fixed on the balancing weight (19).

8. A flexible multipoint centralized lifting device as claimed in claim 5, wherein: the bolt device (F) comprises an electric push rod (22) and a clamping block (23); the electric push rod (22) is arranged on the ring frame (13); the fixture block (23) is arranged on the electric push rod (22); the clamping block (23) is clamped with the baffle (14).

9. A flexible multipoint centralized lifting device as claimed in claim 4, wherein: the spiral groove (12) and the steel wire rope I (8) are provided with a plurality of grooves, the fixed pulley block (9), the guide pulley block I (10) and the guide pulley block II (11) are composed of a plurality of fixed pulleys, a guide wheel I and a guide wheel II, and the number of the spiral groove (12) and the number of the steel wire rope I (8) are the same as the number of the fixed pulleys, the guide wheel I and the guide wheel II.

10. A flexible multipoint centralized lifting device as claimed in claim 3, wherein: two groups of motors (5) and two groups of braking devices (D) are symmetrically arranged on the two retracting devices (B); an incremental encoder is arranged on the motor (5).