阅读说明：本技术 一种用于升降装置中的电机抱闸机构 (Motor band-type brake mechanism used in lifting device ) 是由 郭士强 于 2021-08-26 设计创作，主要内容包括：本发明涉及电机抱闸设备技术领域,且公开了一种用于升降装置中的电机抱闸机构,包括固定支架,固定支架的底部固定套接有锁止套筒,锁止套筒的内壁上设有锁止齿块,且锁止套筒的前后两侧分别设有一组滑动隔板,锁止套筒的内部活动套接有活动卡盘,且滑动隔板的内侧与活动卡盘的端面之间滑动连接。该用于升降装置中的电机抱闸机构,对于活动卡爪上的固定卡齿与锁止套筒上的锁止齿块斜齿结构且其方向的设置,以便于在该电机发生失电的情况下,固定卡齿与锁止齿块之间可以相互卡死而为传动主轴提供稳定有效地锁止压力,使其在外力的作用下不会发生相对滑动的现象,进一步提高了该抱闸机构在运行过程中的稳定性及可靠性。(The invention relates to the technical field of motor brake equipment, and discloses a motor brake mechanism for a lifting device, which comprises a fixed support, wherein the bottom of the fixed support is fixedly sleeved with a locking sleeve, the inner wall of the locking sleeve is provided with a locking tooth block, the front side and the rear side of the locking sleeve are respectively provided with a group of sliding partition plates, a movable chuck is movably sleeved in the locking sleeve, and the inner side of each sliding partition plate is in sliding connection with the end face of the movable chuck. This a motor band-type brake mechanism for among elevating gear, to the setting of fixed latch on the activity jack catch and the oblique tooth structure of locking tooth piece on the locking sleeve and its direction to under the circumstances that this motor took place to lose the electricity, can block each other between fixed latch and the locking tooth piece and die and provide stable locking pressure effectively for the transmission main shaft, make its can not take place relative slip's phenomenon under the effect of external force, further improved this band-type brake mechanism stability and reliability at the operation in-process.)

1. The utility model provides a motor band-type brake mechanism for among elevating gear, includes fixed bolster (1), the fixed locking sleeve (2) that has cup jointed in bottom of fixed bolster (1), be equipped with locking tooth piece (3) on the inner wall of locking sleeve (2), and both sides are equipped with a set of sliding partition (4), its characterized in that respectively around locking sleeve (2): the movable chuck (5) is sleeved in the locking sleeve (2) in a movable manner, the inner side of the sliding partition plate (4) is connected with the end face of the movable chuck (5) in a sliding manner, a transmission main shaft (6) is arranged in the movable chuck (5), two ends of the transmission main shaft (6) extend to two sides of the outer portion of the fixed support (1) respectively, three groups of movable clamping jaws (7) which are arranged in an annular array manner are connected with the outer portion of the transmission main shaft (6) in an inner cavity of the locking sleeve (2) in a pin joint manner, six groups of electromagnetic coils (8) corresponding to the three groups of movable clamping jaws (7) which are arranged in an annular array manner are arranged on the front side and the rear side of the movable clamping jaws (5) respectively, a connecting sliding rod (9) is arranged in the electromagnetic coils (8) in a transmission manner and connected with one end of the movable clamping jaw (7) through a fixed clamping plate (10), and fixed clamping teeth (11) are arranged on one side of the top end of the movable clamping jaw (7), and the top end of the movable clamping jaw (7) is in transmission connection with the inside of the movable clamping chuck (5) through an elastic connecting rope (12).

2. The motor band-type brake mechanism for the lifting device according to claim 1, characterized in that: and the lead inside the electromagnetic coil (8) is connected with the lead of the motor in parallel.

3. The motor band-type brake mechanism for the lifting device according to claim 1, characterized in that: the fixed latch (11) is designed into a helical tooth-shaped structure with the same rotation direction of the transmission main shaft (6) in the lifting device under the action of gravity, and the helical tooth direction of the locking tooth block (3) on the locking sleeve (2) is opposite to the helical tooth direction.

4. A motor brake mechanism for use in a lifting device according to claim 3, wherein: the outer part of the connecting slide rod (9) is of an annular structure taking a pin joint between the movable clamping jaw (7) and the movable chuck (5) as a circle center.

5. The motor band-type brake mechanism for the lifting device according to claim 4, characterized in that: the electromagnetic coil (8) generates a suction force to the movable jaw (7) through the connecting slide rod (9) in a power-on state, and the suction force is larger than the sum of the elastic force of the elastic connecting rope (12) and the centrifugal force applied to the movable jaw (7) at the highest rotating speed.

Technical Field

The invention relates to the technical field of motor contracting brake equipment, in particular to a motor contracting brake mechanism used in a lifting device.

Background

The motor band-type brake is a main shaft braking mechanism which can lock the position of a main shaft of the motor when the motor stops so as to prevent the motor from rotating under the action of external force, the band-type brake is released when the motor is powered on in an electromagnetic induction mode so that the main shaft can normally rotate, and the band-type brake is tightly held when the motor is powered off so as to prevent the main shaft from continuously rotating to cause a falling accident.

Mechanical braking in the existing motor band-type brake structure is stronger in generated braking pressure, higher in stability and safety, lower in energy consumption, smaller in impact force on a motor in the braking process and widely used compared with electric braking.

However, the mechanical brake structure in the existing motor band-type brake adopts a locking mode of extrusion friction between the brake shoe and the brake wheel, and the brake shoe belongs to a wear component, so that the brake shoe can be worn to different degrees in the long-time and frequent use process, and the braking efficiency of the brake shoe can be deteriorated therewith.

Therefore, a motor brake mechanism for a lifting device is needed to overcome the defects of the mechanical brake structure in the existing motor brake.

Disclosure of Invention

Technical problem to be solved

The invention provides a motor band-type brake mechanism used in a lifting device, which has the advantages of gear locking mode, no deterioration of braking efficiency due to extrusion abrasion, no need of regularly adjusting the gap, high stability and reliability, simple whole structure and convenient installation and maintenance, solves the problem that the braking efficiency of the mechanical braking structure in the existing motor band-type brake is deteriorated due to the adoption of the locking mode of extrusion friction of a brake shoe and a brake wheel, the brake shoe belongs to an abrasion component, so that the brake shoe can generate abrasion with different degrees in the long-time and frequent use process, the braking efficiency is deteriorated therewith, the gap between the brake shoe and the brake wheel in the mechanical braking structure needs to be regularly adjusted to keep the good braking efficiency, and meanwhile, the mechanical braking structure in the existing motor band-type brake also comprises an armature component, so that the whole volume structure is huge and the installation and maintenance are complicated.

(II) technical scheme

The invention provides the following technical scheme: a motor brake mechanism used in a lifting device comprises a fixed support, wherein a locking sleeve is fixedly sleeved at the bottom of the fixed support, a locking tooth block is arranged on the inner wall of the locking sleeve, a group of sliding partition plates are respectively arranged on the front side and the rear side of the locking sleeve, a movable chuck is movably sleeved in the locking sleeve, the inner side of each sliding partition plate is in sliding connection with the end face of the corresponding movable chuck, a transmission main shaft is arranged in the movable chuck, the two ends of the transmission main shaft respectively extend to the two sides of the outer part of the fixed support, three groups of movable clamping jaws which are annularly and integrally arranged are in a pin joint mode are arranged outside the transmission main shaft and in the inner cavity of the locking sleeve, six groups of electromagnetic coils corresponding to the three groups of movable clamping jaws which are integrally and integrally arranged are respectively arranged on the front side and the rear side of the movable chuck, a connecting slide rod is arranged in the electromagnetic coils and is in transmission connection with one end of each movable clamping jaw through a fixed clamping plate, one side at the top end of the movable clamping jaw is provided with a fixed clamping tooth, and the top end of the movable clamping jaw is in transmission connection with the inside of the movable chuck through an elastic connecting rope.

Preferably, the wire inside the electromagnetic coil is connected with the wire of the motor in parallel.

Preferably, the fixed latch is in a helical tooth-shaped structure with the same direction as the rotation direction of the transmission main shaft in the lifting device under the action of gravity, and the helical tooth direction of the locking tooth block on the locking sleeve is opposite to the direction.

Preferably, the outer part of the connecting slide rod is of an annular structure taking a pin joint between the movable clamping jaw and the movable clamping chuck as a circle center.

Preferably, the electromagnetic coil generates a suction force to the movable jaw through the connecting sliding rod in a power-on state, and the suction force is larger than the sum of the elastic force of the elastic connecting cable and the centrifugal force applied to the movable jaw at the highest rotating speed.

(III) advantageous effects

The invention has the following beneficial effects:

1. compared with the mechanical brake mechanism in the existing motor band-type brake, the gear locking mode is adopted, the abrasion problem caused to a brake shoe when friction locking is extruded for a long time can be effectively avoided, the braking efficiency generated to a transmission main shaft is greatly improved, the gear locking braking mode is adopted, the gap between a fixed clamping tooth on the movable clamping jaw and a locking tooth block on a locking sleeve is not required to be regularly adjusted, and the installation and maintenance are convenient, the stability and the reliability are higher.

2. This a motor band-type brake mechanism for among elevating gear, to the setting of fixed latch on the activity jack catch and the oblique tooth structure of locking tooth piece on the locking sleeve and its direction to under the circumstances that this motor took place to lose the electricity, can block each other between fixed latch and the locking tooth piece and die and provide stable locking pressure effectively for the transmission main shaft, make its can not take place relative slip's phenomenon under the effect of external force, further improved this band-type brake mechanism stability and reliability at the operation in-process.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the mounting structure of the movable chuck and the movable jaws of the present invention;

FIG. 3 is a front view of a removable cartridge constructed in accordance with the present invention;

fig. 4 is a schematic structural diagram of the movable chuck of the present invention.

In the figure: 1. fixing a bracket; 2. a locking sleeve; 3. a locking tooth block; 4. a sliding partition plate; 5. a movable chuck; 6. a transmission main shaft; 7. a movable jaw; 8. an electromagnetic coil; 9. connecting a sliding rod; 10. fixing the clamping plate; 11. fixing the latch; 12. an elastic connecting rope.

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.

Referring to fig. 1-4, a motor brake mechanism for a lifting device includes a fixed bracket 1, a locking sleeve 2 is fixedly sleeved at the bottom of the fixed bracket 1, a locking tooth block 3 is disposed on the inner wall of the locking sleeve 2, a set of sliding partition plates 4 are disposed on the front and rear sides of the locking sleeve 2 respectively, a movable chuck 5 is movably sleeved inside the locking sleeve 2, the inner side of the sliding partition plate 4 is slidably connected with the end face of the movable chuck 5, a transmission main shaft 6 is disposed inside the movable chuck 5, two ends of the transmission main shaft 6 extend to two sides of the outside of the fixed bracket 1 respectively, three sets of movable jaws 7 arranged in an annular array are pinned in the inner cavity of the locking sleeve 2 outside the transmission main shaft 6, six sets of electromagnetic coils 8 corresponding to the three sets of movable jaws 7 arranged in an annular array are disposed on the front and rear sides of the movable chuck 5 respectively, a connecting slide rod 9 is arranged in the electromagnetic coil 8 and is in transmission connection with one end of the movable clamping jaw 7 through a fixed clamping plate 10, one side of the top end of the movable clamping jaw 7 is provided with a fixed clamping tooth 11, and the top end of the movable clamping jaw 7 is in transmission connection with the inside of the movable clamping chuck 5 through an elastic connecting rope 12.

When the motor is powered off, the movable clamping jaws 7 are in an outward-opening state under the action of centrifugal force generated when the movable clamping jaws 7 rotate or the elastic force of the elastic connecting cables 12, and then the movable clamping jaws 7 are mutually clamped with the locking tooth blocks 3 on the locking sleeve 2 to realize locking operation on the transmission main shaft 6, compared with a mechanical brake mechanism in the existing motor band-type brake, the gear locking mode is adopted, so that the abrasion problem of a brake shoe caused by long-time extrusion friction locking can be effectively avoided, and the braking efficiency generated by the transmission main shaft 6 is greatly improved;

meanwhile, a gear locking braking mode is adopted for the transmission main shaft 6, so that the structure on a mechanical braking mechanism on the motor band-type brake is compact, the occupied space of the whole volume structure is small, the installation and the maintenance are simple and convenient, the gear locking braking mode is adopted, the gap between the fixed clamping teeth 11 on the movable clamping jaw 7 and the locking tooth blocks 3 on the locking sleeve 2 does not need to be adjusted regularly, and the stability and the reliability are high.

In the technical scheme, the lead wire inside the electromagnetic coil 8 is connected with the lead wire of the motor in parallel, so that the state that the electromagnetic coil and the motor are electrified or not electrified can be ensured.

In this embodiment, the fixed latch 11 is a helical tooth structure that is the same as the rotation direction of the transmission main shaft 6 of the lifting device due to gravity, and the direction of the helical tooth of the locking block 3 on the locking sleeve 2 is opposite to that of the helical tooth structure.

Wherein, to the setting of the 3 skewed tooth structures of locking tooth piece and its direction on the fixed latch 11 on the movable jaw 7 and the locking sleeve 2 to in this motor take place under the circumstances of losing power, can block each other between fixed latch 11 and the locking tooth piece 3 and provide stable effective locking pressure for transmission main shaft 6, make it can not take place relative slip's phenomenon under the effect of external force, further improved this band-type brake mechanism stability and reliability at the operation in-process.

In the technical scheme, the outer part of the connecting slide rod 9 is of an annular structure taking a pin joint between the movable jaw 7 and the movable chuck 5 as a circle center.

The sliding track of the connecting sliding rod 9 is arranged, so that the fluency and the stability of the movable clamping jaws 7 when the movable clamping jaws are opened outwards or contracted inwards are effectively improved, and the clamping phenomenon is not easy to occur.

In the technical scheme, the suction force of the electromagnetic coil 8 on the movable jaw 7 through the connecting slide rod 9 in the electrified state is larger than the sum of the elastic force of the elastic connecting rope 12 and the centrifugal force applied to the movable jaw 7 at the highest rotating speed, so that the transmission main shaft 6 can normally rotate in the electrified state of the motor, and the friction loss of the motor in the running process can not be increased.

The use method and the working principle of the embodiment are as follows:

firstly, the transmission main shaft 6 is in transmission connection with the main shaft of the motor, and then the transmission main shaft 6 is driven to rotate along with the motor when the motor is started:

when the motor keeps the electrified state, the electromagnetic coil 8 is connected in parallel with the motor and also always keeps the electrified state, so that the electromagnetic coil generates a corresponding magnetic field to adsorb the connecting slide rod 9, and drives the movable clamping jaws 7 to keep the contracted state and stretch the elastic connecting cables 12 under the transmission action of the fixed clamping plates 10, so that the fixed clamping teeth 11 on the electromagnetic coil and the locking tooth blocks 3 on the locking sleeve 2 are in the mutually separated state, and the influence of centrifugal force on the movable clamping jaws 7 during high-speed rotation is overcome, so that the transmission main shaft 6 is not influenced during the rotation process along with the motor;

when the motor is in a power-off state, the electromagnetic coil 8 is connected in parallel with the electromagnetic coil and is also in a power-off state, so that the electromagnetic coil cannot generate a corresponding magnetic field to adsorb the connecting slide rod 9, and the electromagnetic coil is expanded outwards under the action of centrifugal force or elastic force of the elastic connecting cable 12 during rotation, so that the fixed latch 11 on the electromagnetic coil and the locking tooth block 3 on the locking sleeve 2 are mutually clamped to lock the transmission main shaft 6, and the transmission main shaft cannot rotate relatively under the action of external force.

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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.