CN220537391U

CN220537391U - Lifting brake of bridge crane with pressure and speed regulation control mode

Info

Publication number: CN220537391U
Application number: CN202322012223.7U
Authority: CN
Inventors: 唐军; 刘想; 文葵; 田佳; 刘子威
Original assignee: Yangchun New Iron and Steel Co Ltd
Current assignee: Yangchun New Iron and Steel Co Ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-02-27
Anticipated expiration: 2033-07-27

Abstract

The utility model provides a lifting brake of a bridge crane in a voltage and speed regulation control mode, and belongs to the technical field of crane brakes. The lifting brake of the bridge crane in the pressure and speed regulation control mode comprises a fixed base and a corner sensor, wherein a first connecting seat and a second connecting seat are installed at the top of the fixed base, a first adjusting rod and a second adjusting rod are respectively connected to the inside of the first connecting seat and the inside of the second connecting seat through first pin shafts, a first clamping seat and a second clamping seat are respectively installed on one sides of the first adjusting rod and the second adjusting rod, which are close to each other, a brake disc is arranged between the first clamping seat and the second clamping seat, a high-speed shaft is connected to the inner transmission of the brake disc, a transmission mechanism of the high-speed shaft is connected to the transmission mechanism of the high-speed shaft, the corner sensor is installed on the outer side of the high-speed shaft, and when the high-speed shaft rotates, reverse torque can be provided by the transmission mechanism controlled by a PLC controller, so that a suspended object is prevented from falling.

Description

Lifting brake of bridge crane with pressure and speed regulation control mode

Technical Field

The utility model relates to the technical field of crane brakes, in particular to a lifting brake of a bridge crane in a voltage and speed regulation control mode.

Background

Bridge cranes require frequent starting and braking during operation, and thus are widely used with various types of brakes. The brake in the lifting mechanism of the bridge crane ensures that the lifted heavy objects can stop in the air at any time, the brake generates a braking effect by friction, and in order to achieve a better braking effect by using a smaller brake, the brake is usually arranged on a high-speed shaft of the transmission mechanism, normally closed type brakes are adopted on the bridge crane, particularly the lifting mechanism, and normally closed type brakes are required to be adopted for ensuring safety.

When the lifting mechanism brake works, three states exist, namely, the brake moment of the brake is larger than the load moment, the brake is in a normal state, and the supporting suspended object is stopped at any position in the air; secondly, the braking moment of the brake is equal to the load moment, both sides are in a critical state, and once a small external force or impact force is given, the suspended object can slide downwards; the brake torque of the brake is smaller than the load torque, the brake is in a failure state, a suspended object can fall freely, and the control mode of pressure and speed regulation is characterized in that when the mechanism controller returns to zero, the pressure and speed regulating device outputs reverse voltage to perform electric braking, when the rotating speed of the motor is close to zero, the brake is powered off to brake, in the crane of the pressure and speed regulating device, the brake plays a supporting role, and because the pressure and speed regulation has a zero-speed braking function, an operator cannot find when the brake is in a critical state, vibration can be generated on the body of the running cart or trolley to give a certain impact force to the suspended object, and the suspended object can slide downwards, so that a hoisting damage accident is very easy to be caused.

Disclosure of Invention

In order to make up for the defects, the utility model provides a lifting brake of a bridge crane in a voltage and speed regulation control mode.

The utility model is realized in the following way:

the utility model provides a bridge crane's that pressure regulating speed governing controlled mode plays to rise stopper, includes unable adjustment base and corner sensor, first connecting seat and second connecting seat are installed at unable adjustment base's top, the inside of first connecting seat and second connecting seat is connected with first regulation pole and second regulation pole through first round pin hub respectively, first holder and second holder are installed respectively to first regulation pole and second regulation pole in one side that is close to each other, be equipped with the brake disc between first holder and the second holder, the inside transmission of brake disc is connected with the high-speed axle, just the drive mechanism transmission of high-speed axle is connected, corner sensor installs in the outside of high-speed axle, one side of unable adjustment base is equipped with the PLC controller.

The beneficial effect of adopting above-mentioned further scheme is, when the test gate, if the stopper braking moment equals with the load moment, at this moment, if hang the thing and receive the impact, will appear the condition of gliding, simultaneously, the high-speed axle can rotate because of hanging the gliding of thing, at this moment, the corner sensor can consequently produce the signal, simultaneously transmit the signal to the PLC controller, when the PLC controller received the signal, can control drive mechanism through the pressure regulating speed regulating device and start, make it provide a reverse rotatory power, in order to prevent hanging the gliding of thing, thereby avoid appearing hanging the thing gliding and appear the jack-up injury accident, and the operator also can in time know the critical value of stopper.

Further, a driving rod is arranged between the top ends of the first adjusting rod and the second adjusting rod, a connecting block is arranged at one end of the driving rod, and the connecting block is connected with the first adjusting rod through a second pin shaft.

Further, a third connecting seat is arranged at the top of the fixed base, an air cylinder is connected to the top of the third connecting seat through a third pin shaft, a pair of connecting plates are connected to the output end of the air cylinder through a fourth pin shaft, a connecting sleeve is arranged at the other end of the driving rod, and the connecting sleeve is connected with the pair of connecting plates through a fifth pin shaft.

Further, the pair of connecting plates are connected with the second adjusting rod through a sixth pin shaft.

Further, the first clamping seat and the second clamping seat are connected with the first adjusting rod and the second adjusting rod through bolts, and the brake blocks are arranged on one sides of the first clamping seat and the second clamping seat, which are close to each other, and can be extruded with the brake disc.

The further scheme has the beneficial effects that when the brake is electrified, the air cylinder jacks up the pair of connecting plates to enable the connecting plates to deviate, the second adjusting rod is driven to move, the first adjusting rod is driven to deviate under the action of the driving rod, at the moment, the pair of brake pads cannot squeeze the brake disc, and therefore the brake is in a brake release state, and the high-speed shaft can be driven to rotate.

Further, the fourth connecting seat is installed at unable adjustment base's top, the sliding sleeve is installed through seventh round pin axle at the top of fourth connecting seat, a pair of be connected with the slide bar through eighth round pin axle between the connecting plate, the slide bar can slide in the inside of sliding sleeve.

Further, a spring is connected between the bottom end of the sliding rod and the inner bottom of the sliding sleeve.

The brake pad has the advantages that under the condition that the brake is electrified, the spring can be stretched due to the extension of the air cylinder, when the brake is in the condition that the brake is in the outage, the air cylinder cannot provide the force for jacking the connecting plate, so that the stretched spring can be reset, the pair of brake pads are reset, and the brake pad and the brake disc are mutually extruded after being reset due to the fact that the brake is normally closed, and therefore the brake pad is in a band-type brake.

The beneficial effects of the utility model are as follows: the lifting brake of the bridge crane in the voltage and speed regulating control mode is obtained through the design, when a brake is tested, if the brake torque of the brake is equal to the load torque, at the moment, if a suspended object is impacted, the condition of sliding downwards occurs, meanwhile, the high-speed shaft rotates due to the sliding downwards of the suspended object, at the moment, the rotation angle sensor can generate a signal, the signal is transmitted to the PLC, and when the PLC receives the signal, the transmission mechanism is controlled to start through the voltage and speed regulating device, so that the transmission mechanism provides a reverse rotating force to prevent the suspended object from sliding downwards, thereby avoiding lifting injury accidents caused by the sliding downwards of the suspended object, and an operator can timely know the critical value of the brake.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed to be practical in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and that other related drawings can be obtained according to these drawings without the inventive effort of a person skilled in the art.

Fig. 1 is a schematic perspective view of a lifting brake of a bridge crane in a voltage and speed regulation control manner according to the present utility model;

FIG. 2 is a schematic diagram of an explosion structure of a lifting brake of a bridge crane in a voltage and speed regulation control mode provided by the utility model;

FIG. 3 is an enlarged schematic view of the structure A of FIG. 2;

fig. 4 is a schematic cross-sectional structure of a sliding sleeve of a lifting brake of a bridge crane in a voltage and speed regulation control manner.

In the figure: 1. a fixed base; 2. a first connection base; 3. a second connecting seat; 4. a fourth connecting seat; 5. a third connecting seat; 6. a cylinder; 7. a connecting plate; 8. a sliding sleeve; 9. a slide bar; 10. a drive rod; 11. connecting sleeves; 12. a connecting block; 13. a second adjusting lever; 14. a second clamping seat; 15. a first adjusting lever; 16. a first clamping seat; 17. a brake disc; 18. a rotation angle sensor; 19. a high-speed shaft; 20. a PLC controller; 21. a brake pad; 22. and (3) a spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

The utility model relates to an embodiment I of a lifting brake of a bridge crane in a voltage and speed regulation control mode

The utility model provides the following technical scheme: as shown in fig. 1, the device comprises a fixed base 1 and a rotation angle sensor 18, wherein a first connecting seat 2 and a second connecting seat 3 are arranged at the top of the fixed base 1, a first adjusting rod 15 and a second adjusting rod 13 are respectively connected inside the first connecting seat 2 and the second connecting seat 3 through a first pin shaft, a first clamping seat 16 and a second clamping seat 14 are respectively arranged at one side of the first adjusting rod 15 and the second adjusting rod 13, which are close to each other, a brake disc 17 is arranged between the first clamping seat 16 and the second clamping seat 14, a high-speed shaft 19 is connected in transmission mode inside the brake disc 17, a transmission mechanism of the high-speed shaft 19 is connected in transmission mode, the rotation angle sensor 18 is arranged at the outer side of the high-speed shaft 19, the fixed base 1 is provided with the PLC controller 20 on one side, when the brake is tested, if the brake braking moment is equal to the load moment, at the moment, if the suspended object is impacted, the condition of sliding down occurs, meanwhile, the high-speed shaft 19 rotates due to the sliding down of the suspended object, at the moment, the rotation angle sensor 18 generates a signal, the signal is transmitted to the PLC controller 20, when the PLC controller 20 receives the signal, the transmission mechanism is controlled to start through the pressure and speed regulating device, so that the transmission mechanism provides a reverse rotating force to prevent the suspended object from sliding down, thereby avoiding lifting injury accidents caused by the sliding down of the suspended object, and an operator can timely know the critical value of the brake.

The utility model relates to a second embodiment of a lifting brake of a bridge crane in a voltage and speed regulation control mode

Referring to fig. 2 and 3, specifically, a driving rod 10 is disposed between the top ends of a first adjusting rod 15 and a second adjusting rod 13, a connecting block 12 is installed at one end of the driving rod 10, the connecting block 12 is connected with the first adjusting rod 15 through a second pin, a third connecting seat 5 is installed at the top of the fixed base 1, the top of the third connecting seat 5 is connected with a cylinder 6 through a third pin, an output end of the cylinder 6 is connected with a pair of connecting plates 7 through a fourth pin, the other end of the driving rod 10 is installed with a connecting sleeve 11, the connecting sleeve 11 is connected with the pair of connecting plates 7 through a fifth pin, the pair of connecting plates 7 are connected with the second adjusting rod 13 through a sixth pin, a first clamping seat 16 and a second clamping seat 14 are connected with the first adjusting rod 15 and the second adjusting rod 13 through bolts, a brake pad 21 is installed at one side of the first clamping seat 16 and the second clamping seat 14 which are close to each other, and the brake pad 21 can be pressed with a brake disc 17, when the brake is powered on, the cylinder 6 jacks the pair of connecting plates 7 to enable the brake pad 7 to shift and drives the second adjusting rod 13 to move, the connecting plates 11 are connected with the connecting plates through a fifth pin, and the pair of connecting plates 7 can not enable the brake disc 17 to be rotated to shift due to the fact that the brake disc 17 can not be rotated, and can be in a high-speed state.

The utility model relates to a third embodiment of a lifting brake of a bridge crane in a voltage and speed regulation control mode

Referring to fig. 4, specifically, the fourth connecting seat 4 is installed at the top of the fixed base 1, the sliding sleeve 8 is installed at the top of the fourth connecting seat 4 through the seventh pin, the sliding rod 9 is connected between the pair of connecting plates 7 through the eighth pin, the sliding rod 9 can slide in the sliding sleeve 8, the spring 22 is connected between the bottom end of the sliding rod 9 and the inner bottom of the sliding sleeve 8, under the condition that the power is on, the spring 22 can be stretched due to the extension of the air cylinder 6, when the power is off, the air cylinder 6 cannot provide the force for jacking the connecting plates 7 at this time, so the stretched spring 22 can be reset, the pair of brake pads 21 can be reset, and because the power is off, the reset brake pads 21 can be mutually extruded with the brake disc 17, and therefore are in the state of holding.

Specifically, the working principle of the lifting brake of the bridge crane in the voltage and speed regulation control mode is as follows: when in use, no-load test gate is firstly carried out: confirming that the hook head is at a safe position, gradually downshifting from 1 st gear to 4 th gear, pressing a stop button, judging whether a hook is slipping or not, and then carrying out load test brake: the lifting of the suspended iron ladle to the height of 0.2-0.5 m is required after no-load brake test, the winch is lifted to the descending height of 1 m, a stop button is pressed down, whether a sliding hook exists or not is judged, in the process, if the motor is not at zero speed, the rotation angle sensor 18 does not conduct electricity operation, only when the motor is at zero speed, the rotation angle sensor 18 conducts electricity operation, the rotation angle sensor 18 adopts the model of TAD2140-NAAB, meanwhile, when the motor rotating speed is zero, the brake is powered off and the brake is in a holding state, if the suspended object slides downwards due to impact, the high-speed shaft 19 rotates due to the sliding of the suspended object, at the moment, the rotation angle sensor 18 generates a signal, meanwhile, the signal is transmitted to the PLC controller 20, and when the PLC controller 20 receives the signal, the rotation angle sensor 18 controls the transmission mechanism to start through the voltage and speed regulating device, so that the suspended object is prevented from sliding downwards, lifting injuries caused by the suspended object sliding downwards are avoided, and the operator can know the critical value of the brake in time.

It should be noted that, the specific model specification of the air cylinder 6 needs to be determined by selecting a model according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply of the cylinder 6 and its principle will be clear to a person skilled in the art and will not be described in detail here.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A lifting brake of a bridge crane in a pressure and speed regulation control mode is characterized by comprising a fixed base (1) and a corner sensor (18),

the utility model discloses a high-speed shaft (19) is connected to the top of unable adjustment base (1), first connecting seat (2) and second connecting seat (3) are installed at the top of unable adjustment base (1), the inside of first connecting seat (2) and second connecting seat (3) is connected with first regulation pole (15) and second regulation pole (13) through first round pin hub connection respectively, first clamping seat (16) and second clamping seat (14) are installed respectively in one side that is close to each other to first regulation pole (15) and second regulation pole (13), be equipped with brake disc (17) between first clamping seat (16) and second clamping seat (14), the inside transmission of brake disc (17) is connected with high-speed shaft (19), just the drive mechanism transmission of high-speed shaft (19) is connected, the outside at high-speed shaft (19) is installed in corner sensor (18), one side of unable adjustment base (1) is equipped with PLC controller (20).

2. The lifting brake of the bridge crane in the voltage and speed regulation control mode according to claim 1, wherein a driving rod (10) is arranged between the top ends of the first adjusting rod (15) and the second adjusting rod (13), a connecting block (12) is installed at one end of the driving rod (10), and the connecting block (12) is connected with the first adjusting rod (15) through a second pin shaft.

3. The lifting brake of the bridge crane in the voltage and speed regulation control mode according to claim 2, wherein a third connecting seat (5) is installed at the top of the fixed base (1), the top of the third connecting seat (5) is connected with an air cylinder (6) through a third pin shaft, the output end of the air cylinder (6) is connected with a pair of connecting plates (7) through a fourth pin shaft, a connecting sleeve (11) is installed at the other end of the driving rod (10), and the connecting sleeve (11) is connected with the pair of connecting plates (7) through a fifth pin shaft.

4. A lifting brake of a bridge crane with a voltage and speed regulation control mode according to claim 3, characterized in that a pair of the connecting plates (7) and the second regulating rod (13) are connected through a sixth pin shaft.

5. The lifting brake of the bridge crane in the voltage and speed regulation control mode according to claim 1, wherein the first clamping seat (16) and the second clamping seat (14) are connected with the first adjusting rod (15) and the second adjusting rod (13) through bolts, the first clamping seat (16) and the second clamping seat (14) are provided with brake blocks (21) at one sides close to each other, and the brake blocks (21) can be extruded with a brake disc (17).

6. The lifting brake of the bridge crane in the voltage and speed regulation control mode according to claim 3, wherein a fourth connecting seat (4) is installed at the top of the fixed base (1), a sliding sleeve (8) is installed at the top of the fourth connecting seat (4) through a seventh pin shaft, a sliding rod (9) is connected between a pair of connecting plates (7) through an eighth pin shaft, and the sliding rod (9) can slide in the sliding sleeve (8).

7. The lifting brake of the bridge crane in a voltage and speed regulating control mode according to claim 6 is characterized in that a spring (22) is connected between the bottom end of the sliding rod (9) and the inner bottom of the sliding sleeve (8).