CN215048254U - Wind vane brake mounted on tower crane rotary motor - Google Patents
Wind vane brake mounted on tower crane rotary motor Download PDFInfo
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- CN215048254U CN215048254U CN202120710263.7U CN202120710263U CN215048254U CN 215048254 U CN215048254 U CN 215048254U CN 202120710263 U CN202120710263 U CN 202120710263U CN 215048254 U CN215048254 U CN 215048254U
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Abstract
A wind vane brake arranged on a tower crane rotary motor belongs to the technical field of tower cranes. Install the connecting piece on the rotating electrical machines including stopper, weather vane and with both, the stopper includes quiet iron core, moves iron core and friction disk, and the characteristics are: the wind vane comprises a wind vane base, a brake release bottom plate abutting component and a return spring, wherein the wind vane base is fixedly connected, the brake release bottom plate is pivoted on the wind vane base and is indirectly connected with the movable iron core, and the return spring is positioned between the brake release bottom plate and the wind vane base and has thrust on the brake release bottom plate; when the brake releasing bottom plate abutting component is electrified, the brake releasing bottom plate cannot continuously turn to the brake, and the movable iron core is locked; when the contact part of the brake release bottom plate is powered off, the brake release bottom plate can rotate freely, and the movable iron core is unlocked. The advantages are that: the motor rotating speed, the steering, the position and the action signal of the vane or the brake are effectively detected and fed back to the control system in time, so that the safety and the operation reliability of the tower crane are facilitated.
Description
Technical Field
The utility model belongs to the technical field of the tower machine, concretely relates to install weather vane stopper on tower machine rotating electrical machines.
Background
The tower crane is the most common hoisting equipment in construction sites, and is also called as a tower crane, and is used for hoisting raw materials such as reinforcing steel bars, wooden sticks, concrete, steel pipes and the like for construction. And a driving part rotating motor on the tower crane is used for driving the suspension arm to rotate.
All install stopper and weather vane on the rotary motor among the prior art, the stopper is used for controlling the start-up and the stop of tower machine gyration part, and the weather vane is then used for controlling the stopper and releases when the outage, makes the gyration part can the free rotation under the wind-force effect to avoid the tower machine to have the risk of being damaged by the strong wind. For example, chinese utility model patent publication No. CN201891782U discloses "an electromagnetism of electrified wind vane loses electric brake", it includes casing, main shaft, and the main shaft stretches into the casing end and installs the flabellum, and the brake disc is installed to the flabellum both sides, and brake disc one side is fixed with the friction disc with brake disc matched with, is fixed with the yoke on the shells inner wall of friction disc one side, is equipped with coil one in the yoke recess, on the friction disc overhang was fixed in the screw rod, the screw rod stretch out the section and arrange in the electric wind vane casing in, the cover is equipped with spring one on the outer wall, a terminal release lever of installing of spring, the release lever upper end be connected with the handle of stretching out the electric wind vane casing, install the electro-magnet on the top of spring one, the inner wall of casing, the electro-magnet overcoat is equipped with coil two, the top of coil two is equipped with armature, is equipped with the push handle relative with armature on the electric wind vane casing outer wall. This patent adopts the stopper at remote control tower machine top, makes the motor be in the release state, has manual release function simultaneously, convenient operation, safe and reliable. However, the disclosed technical scheme cannot be provided with an encoder, and the performances of the motor such as the rotating direction, the speed, the efficiency and the like are difficult to monitor.
In view of the above-mentioned prior art, there is a need for a reasonable improvement of the existing vane brake structure installed on the tower crane rotating motor. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an install weather vane stopper on tower machine rotating electrical machines, installation encoder and various detection switch, effectively detect motor speed, turn to, the action signal of position and weather vane or stopper, in time feed back to control system, are favorable to the security and the operational reliability of tower machine, design benefit, and the function is comprehensive.
The utility model discloses a task is accomplished like this, a weathervane brake of installing on tower machine rotating electrical machines, including stopper, weathervane and with both connect and install the connecting piece on rotating electrical machines, the stopper includes that the looks attracts when switching on and the off-line static iron core and the movable iron core that separate and with the friction disk of movable iron core complex, the friction disk is connected with the motor spindle spline of rotating electrical machines; the wind vane comprises a wind vane base, a brake releasing bottom plate abutting component and a return spring, wherein the wind vane base is fixedly connected with a rotary motor, the brake releasing bottom plate is pivoted on the wind vane base, the part of the brake releasing bottom plate close to a pivoting point is indirectly connected with a movable iron core, and the return spring is positioned between the brake releasing bottom plate and the wind vane base and has thrust in the direction far away from a brake for the brake releasing bottom plate; before the brake stops working and is powered off, the brake-releasing bottom plate is powered on to enable the brake-releasing bottom plate not to rotate towards the brake when the brake stops working and is powered off, and therefore the movable iron core is pulled to be not close to the friction disc; when the brake is powered on again after power failure, the brake releasing bottom plate abutting component releases the locking of the brake releasing bottom plate which cannot rotate towards the brake, and then releases the locking of the movable iron core, so that the movable iron core can reliably move towards the friction disc when the brake is powered off in normal work.
In a specific embodiment of the present invention, the release bottom plate collision component includes a vane electromagnet, a touch panel, and a vane micro switch, the touch panel is disposed just opposite to the vane electromagnet and is rotatable relative to the vane electromagnet, a contact of the vane micro switch is installed toward the touch panel, before the brake stops working and is powered off, the vane electromagnet of the release bottom plate collision component is powered on to attract the touch panel, the touch panel presses against a contact of the vane micro switch and moves to a rotation path of the release bottom plate, so that the release bottom plate cannot continue to turn to the brake when the brake stops working and is powered off, thereby pulling the brake core to make it unable to approach the friction disc; when the brake is powered on after power failure in normal work again, the abutting plate rotates towards the direction far away from the wind vane electromagnet, then the abutting plate moves out of the rotating path of the brake releasing bottom plate, the locking of the brake releasing bottom plate is released, the locking of the movable iron core is released, and the movable iron core can reliably move towards the friction disc when the brake is powered off in normal work.
The utility model discloses a further concrete embodiment, the part of contradicting of release bottom plate is still including installing the support on the weathercock base, weathercock electro-magnet, touch panel, weathercock micro-gap switch are all installed on the support, touch panel and support between install the touch panel spring that resets, the touch panel spring that resets exerts a force that makes the touch panel keep away from the weathercock electro-magnet.
In another embodiment of the present invention, the connecting member includes a spacer for spacing the brake and the vane and a fixing bolt screwed into the rotary motor after passing through the vane, the spacer and the brake in sequence.
In another specific embodiment of the present invention, the base boss is provided on the pivot point of the vane base corresponding to the brake release base plate, and the brake release base plate is pivoted on the base boss.
In the utility model discloses a still a concrete embodiment, the weather vane is last still including U type spare and trip bolt, the position that trip bottom plate closes on pivot point is pivoted in the opening of U type spare, the bottom of U type spare is equipped with a connection boss, the screw has been seted up on the connection boss, the trip bolt passes and revolves in the screw of connecting the boss behind movable iron core and the weather vane base, realizes being connected of trip bottom plate and movable iron core.
The utility model discloses a further a concrete embodiment, the spiro union has a brake release pole on the brake release bottom plate, through pulling this brake release pole, can upwards rotate the brake release bottom plate, and the iron core is moved in manual pulling to the manual stopper of opening.
In a more specific embodiment of the present invention, the brake-releasing bottom plate is a V-shaped plate, the two ends of the opening of the V-shaped plate are pivoted to the vane base, and the bottom corner of the V-shaped plate is connected to the brake-releasing rod.
In yet another specific embodiment of the present invention, the corner bottom of the V-shaped plate surface of the trip bottom plate has a protruding contact block toward the contact plate.
In a more specific embodiment of the present invention, when the touch panel is attracted by the vane electromagnet, an included angle between a side panel surface away from the vane electromagnet and a horizontal plane is 90 ± 5 degrees; when the wind vane electromagnet is powered off, the contact plate leans against the stop block of the support, and the included angle between the plate surface of one side of the contact plate, which is far away from the wind vane electromagnet, and the horizontal plane is 75 +/-5 degrees.
The utility model discloses owing to adopt behind the above-mentioned structure, beneficial effect who has: firstly, when the tower crane works normally, the brake effectively controls the start and stop of a rotary part of the tower crane, when the tower crane stops working, the conflict plate on the vane abuts against a brake releasing bottom plate of the brake, so that the brake is in a releasing state, and the rotary part of the tower crane can rotate along with the wind direction, thereby improving the operation convenience and the safety of the tower crane;
secondly, the brake releasing bottom plate is V-shaped, a motor spindle can penetrate through the V-shaped opening, namely penetrates through the middle part of the disc brake and extends out, and an encoder is arranged on the extended spindle, so that the precision is high, the encoder is used for detecting the rotating speed, the steering direction and the position of the motor and feeding the detected rotating speed, the steering direction and the position back to a control system for effective control;
thirdly, the wind vane and the brake are both provided with the micro switches, and each action of the wind vane or the brake can feed back an action signal to the control system, so that the wind vane or the brake has high sensitivity, high reliability and convenient control;
fourth, conflict board when by the electro-magnet actuation face and horizontal plane one-tenth 90 +/-5 degrees angles, when the outage of wind vane electro-magnet, the touch panel is pushed away to the available very little power of wind vane micro-gap switch's contact, and the touch panel is because self gravity outwards rotates and berths on the dog, simple structure, design benefit, and stability is high simultaneously.
Drawings
Fig. 1 is the utility model discloses an install weather vane stopper's on tower machine rotating electrical machines appearance.
Fig. 2 is the utility model discloses an install the structural schematic diagram of weather vane stopper on tower machine rotating electrical machines.
Fig. 3 is a top view of fig. 1.
In the figure: 1. the brake comprises a brake, 11, a static iron core, 111, an electromagnetic coil, 112, a brake spring, 113, a mounting surface, 12, a movable iron core, 13, a friction disc, 14, a spline, 15, a mounting seat, 16, an adjusting guide sleeve, 17, a detection switch and 18, a detection switch mounting bolt;
2. the wind vane comprises a wind vane body, 21 wind vane bases, 211 base bosses, 22 brake release base plates, 221 contact blocks, 23 brake release rods, 24 brake release base plate contact parts, 241 supports, 2411 baffle plates, 242 wind vane electromagnets, 243 contact plates, 244 wind vane micro switches, 245 contact plate return springs, 25 wind vane protective covers, 26U-shaped pieces, 261 connecting bosses, 27 brake release bolts and 28 return springs;
3. a rotary motor, 31, a motor main shaft, 311, an extension shaft;
4. connecting piece, 41 spacer bush, 42 fixing bolt; 5. the brake comprises a housing, 51, a manual brake block releasing, 511, a mounting screw, 512, a self-locking bolt, 513 and a locking nut; 6. fan, 7, coder.
Detailed Description
The following detailed description is given by way of example with reference to the accompanying drawings, but the description of the embodiments is not intended to limit the technical solutions of the present invention, and any equivalent changes made according to the inventive concept, which are merely formal and insubstantial, should be considered as the technical solutions of the present invention.
In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position shown in fig. 1, and thus, should not be interpreted as a specific limitation to the technical solution provided by the present invention.
Please refer to fig. 1 to 3, the utility model relates to an install weather vane stopper on tower machine rotating electrical machines, including stopper 1, weather vane 2, couple together stopper 1 and weather vane 2 and install connecting piece 4 on rotating electrical machines 3 and wrap up housing 5 with stopper 1 and weather vane 2, stopper 1 includes quiet iron core 11, movable iron core 12, friction disc 13, spline 14, mount pad 15, adjustment guide pin bushing 16, detection switch 17, detection switch mounting bolt 18. The stationary core 11 is internally provided with an electromagnetic coil 111 and a brake spring 112. One side of the movable iron core 12 is matched with the static iron core 11, the other side of the movable iron core is matched with the friction disc 13, the friction disc 13 is installed on a motor spindle 31 of the rotary motor 3 through a spline 14, and the other side of the friction disc 13 is matched with the installation seat 15. The axial position of the spline 14 is defined by a circular groove in the mounting seat 15, i.e. one end of the spline 14 is placed in a circular groove in the mounting seat 15. One end of the adjusting guide sleeve 16 is abutted against the mounting seat 15, the other end of the adjusting guide sleeve passes through the movable iron core 12 and then is screwed into the static iron core 11, and the gap between the static iron core 11 and the movable iron core 12 during braking of the brake can be adjusted through the adjusting guide sleeve 16.
As shown in fig. 2, the wind vane 2 includes a wind vane base 21, a brake releasing base plate 22, a brake releasing rod 23, a brake releasing base plate abutting part 24, a wind vane protective cover 25, a U-shaped member 26, a brake releasing bolt 27, and a return spring 28, and the connecting member 4 includes a spacer 41 for spacing the brake 1 and the wind vane 2, and a fixing bolt 42 screwed into the rotary motor 3 after sequentially passing through the wind vane 2, the spacer 41, and the brake 1. Specifically, the spacer 41 is located between the vane base 21 and the stationary core 11, and the fixing bolt 42 sequentially penetrates through the vane base 21, the shaft sleeve 41, the stationary core 11, the adjusting guide sleeve 16 and the mounting seat 15 and then is screwed into the motor, so that the vane brake is mounted.
As shown in fig. 2, one end of the trip releasing base plate 22 is pivotally mounted on the vane base 21, specifically, a base boss 211 is disposed on a position of the vane base 21 corresponding to one end of the trip releasing base plate 22, and one end of the trip releasing base plate 22 is pivotally mounted on the base boss 211. The part of the brake release bottom plate 22 close to the pivot point of the end part is indirectly connected with the movable iron core 12 and is pulled downwards by the movable iron core 12, and the reset spring 28 is positioned between the brake release bottom plate 22 and the wind vane base 21 and has upward thrust on the brake release bottom plate 22. Specifically, the position that the open brake bottom plate 22 closes on the tip pivot point is put in the opening of U type spare 26 through the round pin pivot, the bottom of U type spare 26 is equipped with one and connects boss 261, connect and seted up the screw on the boss 261, open brake bolt 27 passes and revolves in the screw of connecting boss 261 behind movable iron core 12 and the vane base 21, realizes being connected of open brake bottom plate 22 and movable iron core 12, when open brake bottom plate 22 upwards rotated, drags movable iron core 12 and removes towards quiet iron core 11 direction, realizes the stopper and opens the brake. The base boss 211 is located on one side of the U-shaped part 26, and the other side of the U-shaped part 26 is provided with the return spring 28 between the brake releasing base plate 22 and the vane base 21, so that the brake releasing base plate 22 is stably arranged under the condition that one end of the brake releasing base plate 22 is fixed, on one hand, the brake releasing bolt 27 is pulled downwards, and on the other hand, the return spring 28 is pushed upwards, namely, away from the brake 1.
As shown in fig. 3, in the present embodiment, the brake releasing bottom plate 22 is a V-shaped plate, two open ends of the V-shaped plate are pivoted to the vane base 21, and the bottom of the corner of the V-shaped plate is screwed to the brake releasing rod 23. More preferably, the corner bottom of the V-shaped plate of the trip floor 22 has an abutting block 221 protruding toward the trip floor abutting member 24. The extension shaft 311 of the motor spindle 31 passes through the V-shaped opening of the V-shaped plate surface of the trip bottom plate 22, so that the fan 6 and the encoder 7 can be conveniently installed on the extension shaft 311. The encoder 7 is installed to detect the rotation speed, rotation direction and position of the rotary motor 3, and feeds the rotation speed, rotation direction and position back to the control system for effective control. A vane shield 25 is also mounted on the vane base 21, and the vane shield 25 is used for covering various components on the vane 2.
As shown in fig. 2, a brake releasing bottom plate abutting member 24 is installed at a position of the wind vane base 21 corresponding to the middle of the brake releasing bottom plate 22, that is, at the bottom of the corner of the V-shaped plate surface, and the brake releasing bottom plate abutting member 24 includes a bracket 241 installed on the wind vane base 21, and a wind vane electromagnet 242, an abutting plate 243, and a wind vane microswitch 244 installed on the bracket 241. The abutting plate 243 is opposite to the vane electromagnet 242 and is pivoted on the bracket 241, and the contact of the vane microswitch 244 is installed towards the abutting plate 243. In this embodiment, a collision plate return spring 245 is installed between the collision plate 243 and the bracket 241, and the collision plate return spring 245 applies a force to make the collision plate 243 away from the vane electromagnet 242. When the vane electromagnet 242 is electrified to suck the abutting plate 243, the abutting plate 243 presses against a contact of the vane microswitch 244, and simultaneously, the upper edge of the abutting plate 243 moves to the rotating path of the brake release base plate 22, so that the brake release base plate 22 cannot rotate, and then the brake release bolt 27 pulls the movable iron core 12 to make the movable iron core unable to approach the friction disc 13; when the wind vane electromagnet 242 is powered off, the contact plate 243 is not attracted by electromagnetic force, the contact plate 243 rotates towards the direction away from the wind vane electromagnet 242 under the action of self gravity, the spring force of the contact plate return spring 245 and the contact ejecting force of the wind vane microswitch 244, the upper edge of the contact plate 243 moves out of the rotating path of the brake release base plate 22, the locking of the brake release base plate 22 is released, and then the locking of the movable iron core 12 is released. The conflict piece 221 of the bottom plate 22 that declutches specifically protrudes to conflict board 243 direction, the effect of conflict piece 221 makes the bottom plate 22 that declutches more be close to the conflict board 243, realizes better effect of supporting, strengthens the intensity of declutching bottom plate 22 and conflict board 243 contact simultaneously. Here, when the touch panel 243 is attracted by the vane electromagnet 242, an included angle between a panel surface of a side far away from the vane electromagnet 242 and a horizontal plane is 90 ± 5 degrees; when the wind vane electromagnet 242 is powered off, the abutting plate 243 rotates outwards to stop at the stop block 2411 of the support 241, and the wind vane electromagnetic wind vane is simple in structure, ingenious in design and high in stability. When the contact plate 243 leans against the stop block 2411 of the bracket 241, an included angle between the plate surface of one side of the contact plate 243 far away from the vane electromagnet 242 and the horizontal plane is 75 +/-5 degrees.
As shown in fig. 2, a casing 5 for protecting the internal structure is further installed on the outer side of the wind vane brake, the trip rod 23 extends out of the casing 5, a manual trip block 51 is installed on the outer side of the casing 5 corresponding to the location of the trip rod 23, and the manual trip block 51 is installed on the casing 5 through an installation screw 511. The manual brake release block 51 is preferably mounted directly below the brake release lever 23. When the brake is released manually, the brake releasing rod 23 is pulled upwards to release the brake, the manual brake releasing block 51 is rotated again, the manual brake releasing block 51 is enabled to abut against the brake releasing rod 23, the brake releasing rod 23 cannot be restored to a braking position, the brake 1 is still in a releasing state when the tower crane is powered off or is powered on subsequently, and the brake can swing along with wind. In this embodiment, the manual brake release block 51 is provided with a self-locking bolt 512 and a locking nut 513, the top of the self-locking bolt 512 is processed into a shape matched with the external shape of the brake release rod 23, for example, the brake release rod 23 is cylindrical, the top of the self-locking bolt 512 is processed into an arc surface, and when the manual brake release block 51 abuts against the brake release rod 23, the self-locking bolt 512 is matched with the brake release rod 23.
As shown in fig. 2, the stationary core 11 is provided with a mounting surface 113 for mounting the detection switch 17, the mounting surface 113 is parallel to the axis, the detection switch 17 is engaged with the detection switch mounting bolt 18, and the detection switch mounting bolt 18 is engaged with the contact of the detection switch 17 after passing through the movable core 12. The detection switch 17 is used for detecting the action condition of the movable iron core 13 and feeding back the action condition to a control system of the tower crane.
With reference to fig. 1 to 3, the operation of the vane brake installed on the tower crane rotary motor of the present invention is as follows:
1. remote brake release
When the tower crane works normally, the rotary motor 3 is normally closed for braking, and the brake 1 is opened by power on and is braked by power off. The vane electromagnet 242 is de-energized and the interference plate 243 is out of the path of rotation of the trip floor 22. When the electromagnetic coil 111 in the static iron core 11 is electrified, the static iron core 11 attracts the movable iron core 12 to move upwards, the brake release bottom plate 22 rotates upwards under the action of the reset spring 28, and at the moment, the crane jib can swing; when the electromagnetic coil 111 in the static iron core 11 is powered off, the electromagnetic force disappears, the movable iron core 12 is pressed against the friction disc 13 under the pushing of the brake spring 112, the friction disc 13 stops the motor spindle 31 through the spline 14, and then the rotary motor 3 of the tower crane is stopped, and at this time, the suspension arm of the tower crane cannot swing. When the construction site goes off duty, the brake 1 needs to be opened before the operation is stopped and the power is cut off, then the wind vane electromagnet 242 is electrified, and the abutting plate 243 is sucked and rotated to the rotating path of the brake release bottom plate 22; the brake 1 is disconnected again, at this time, the brake release bottom plate 22 is propped by the abutting plate 243, then the movable iron core 12 is enabled to continuously abut against the static iron core 11, the brake 1 is still in a brake release opening state, and the suspension arm of the tower crane can still swing along with the wind direction; finally, the wind vane electromagnet 242 is powered off, and the force of the brake releasing bottom plate 22 pressing against the abutting plate 243 is large, so that the static friction force generated is far greater than the contact bounce force of the wind vane microswitch 244, the abutting plate 243 always blocks the rotation of the brake releasing bottom plate 22, and the brake 1 is always in a brake releasing state.
When the tower crane is started again in the daytime, the brake 1 works normally and is powered on, the brake release bottom plate 22 is lifted upwards along with the movable iron core 12, at the moment, the wind vane electromagnet 242 is in a power-off state, the abutting plate 243 rotates towards the direction away from the wind vane electromagnet 242 under the action of the self gravity, the spring force of the abutting plate return spring 245 and the contact spring force of the wind vane microswitch 244, the rotating path of the brake release bottom plate 22 is moved out, then, the brake 1 can brake normally, and the rotation of the suspension arm is guaranteed to reach the accurate position. In the whole process, each action of the vane 2 is fed back to the control system through the vane microswitch 244, each braking and releasing of the brake 1 is sent to the control system through the detection switch 17, and when the rotary motor 3 operates, parameters such as the rotating speed, the rotating direction and the position of the rotary motor are detected through the encoder and sent to the control system.
2. Operated manually
When the outage condition appears, the weather vane brake can not be started, the brake 1 can be opened by manually pulling the brake-releasing rod 23, the brake-releasing rod 23 is propped against the brake-releasing rod 51 through the manual brake-releasing block, the brake-releasing rod 23 is released again, the brake-releasing rod 23 is pressed on the manual brake-releasing block 51, therefore, the brake 1 is still in an open state when the tower crane is powered off or is powered on subsequently, and the suspension arm can swing along with the wind. When the normal braking of the brake 1 is recovered, the brake releasing rod 23 is manually pulled, and then the manual brake releasing block 51 is rotated, so that the manual brake releasing block 51 moves out of the rotating path of the brake releasing rod 23.
Claims (10)
1. A vane brake arranged on a tower crane rotary motor comprises a brake (1), a vane (2) and a connecting piece (4) which connects the brake and the vane (2) and is arranged on the rotary motor (3), wherein the brake (1) comprises a static iron core (11) and a movable iron core (12) which are attracted when electrified and separated when the electrified and the power is off and a friction disc (13) matched with the movable iron core (12), and the friction disc (13) is in splined connection with a motor spindle (31) of the rotary motor (3); the method is characterized in that: the wind vane (2) comprises a wind vane base (21), a brake releasing bottom plate (22), a brake releasing bottom plate abutting component (24) and a reset spring (28), the wind vane base (21) is fixedly connected with the rotary motor (3), the brake releasing bottom plate (22) is pivoted on the wind vane base (21), the part, close to a pivoting point, of the brake releasing bottom plate (22) is indirectly connected with the movable iron core (12), the reset spring (28) is located between the brake releasing bottom plate (22) and the wind vane base (21), and thrust in the direction away from the brake (1) is applied to the brake releasing bottom plate (22); before the brake (1) stops working and is powered off, the brake-releasing bottom plate abutting part (24) is electrified to enable the brake-releasing bottom plate (22) not to rotate towards the brake (1) when the brake (1) stops working and is powered off, so that the movable iron core (12) is pulled and cannot approach the friction disc (13); when the brake (1) is powered on again after power failure, the brake releasing bottom plate abutting part (24) releases the locking of the brake releasing bottom plate (22) which cannot rotate towards the brake (1), and then releases the locking of the movable iron core (12), so that the movable iron core (12) can reliably move towards the friction disc (13) when the brake (1) is powered off in normal operation.
2. The weather vane brake installed on the rotary motor of the tower crane according to claim 1, wherein the brake-releasing bottom plate abutting part (24) comprises a weather vane electromagnet (242), an abutting plate (243) and a weather vane microswitch (244), the abutting plate (243) is arranged right opposite to the weather vane electromagnet (242) and can rotate relative to the weather vane electromagnet (242), a contact of the weather vane microswitch (244) is installed towards the abutting plate (243), before the brake (1) stops working and is powered off, the weather vane electromagnet (242) of the brake-releasing bottom plate abutting part (24) is powered on to attract the abutting plate (243), the abutting plate (243) presses against the contact of the weather vane microswitch (244) and moves to a rotation path of the brake-releasing bottom plate (22), so that the brake-releasing bottom plate (22) cannot continue to turn to the brake (1) when the brake (1) stops working and is powered off, thereby pulling the movable iron core (12) to be incapable of approaching the friction disc (13); when the brake (1) is powered on after being powered off and works normally again, the abutting plate (243) rotates towards the direction away from the wind vane electromagnet (242), then moves out of the rotating path of the brake releasing bottom plate (22), releases the locking of the brake releasing bottom plate (22), then releases the locking of the movable iron core (12), and the movable iron core (12) can reliably move towards the friction disc (13) when the brake (1) is powered off in normal work.
3. The weathercock brake installed on the tower crane rotating motor as claimed in claim 1, wherein the brake release bottom plate collision component (24) further comprises a bracket (241) installed on the weathercock base (21), the weathercock electromagnet (242), the collision plate (243), and the weathercock microswitch (244) are all installed on the bracket (241), a touchdown plate return spring (245) is installed between the collision plate (243) and the bracket (241), and the touchdown plate return spring (245) applies a force to make the touchdown plate (243) away from the weathercock electromagnet (242).
4. The weather vane brake installed on the tower crane rotary motor according to claim 1, characterized in that the connecting piece (4) comprises a spacer (41) for spacing the brake (1) and the weather vane (2) and a fixing bolt (42) which sequentially passes through the weather vane (2), the spacer (41) and the brake (1) and then is screwed into the rotary motor (3).
5. The wind vane brake installed on the tower crane rotary motor according to claim 1, characterized in that a base boss (211) is arranged on the pivot point of the wind vane base (21) corresponding to the brake release base plate (22), and the brake release base plate (22) is pivoted on the base boss (211).
6. The wind vane brake installed on the tower crane rotary motor according to claim 1 is characterized in that the wind vane (2) further comprises a U-shaped piece (26) and a brake releasing bolt (27), the part of the brake releasing bottom plate (22) close to the pivot point is pivoted in an opening of the U-shaped piece (26), a connecting boss (261) is arranged at the bottom of the U-shaped piece (26), a screw hole is formed in the connecting boss (261), the brake releasing bolt (27) penetrates through the movable iron core (12) and the wind vane base (21) and then is screwed into the screw hole of the connecting boss (261), and connection between the brake releasing bottom plate (22) and the movable iron core (12) is achieved.
7. The weather vane brake installed on the tower crane rotating motor as claimed in claim 1, characterized in that the brake releasing bottom plate (22) is screwed with a brake releasing rod (23), the brake releasing bottom plate (22) can be rotated upwards by pulling the brake releasing rod (23), and the movable iron core (12) is manually pulled, so that the brake (1) is manually opened.
8. The weather vane brake installed on the tower crane rotary motor according to claim 7, wherein the brake releasing bottom plate (22) is a V-shaped plate, two ends of an opening of the V-shaped plate are pivoted with the weather vane base (21), and the bottom of a corner of the V-shaped plate is in threaded connection with the brake releasing rod (23).
9. The weathercock brake installed on the tower crane rotating motor is characterized in that the corner bottom of the V-shaped plate surface of the brake releasing bottom plate (22) is provided with a contact block (221) protruding towards the contact plate (243).
10. The weathercock brake installed on the tower crane rotating motor is characterized in that when the contact plate (243) is attracted by the weathercock electromagnet (242), the included angle between the plate surface of one side far away from the weathercock electromagnet (242) and the horizontal plane is 90 +/-5 degrees; when the wind vane electromagnet (242) is powered off, the contact plate (243) leans against the stop block (2411) of the support (241), and the included angle between the plate surface of one side, away from the wind vane electromagnet (242), of the contact plate (243) and the horizontal plane is 75 +/-5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120710263.7U CN215048254U (en) | 2021-04-08 | 2021-04-08 | Wind vane brake mounted on tower crane rotary motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114408750A (en) * | 2021-12-30 | 2022-04-29 | 湖南三一塔式起重机械有限公司 | Rotary power-loss anti-lock method and system, tower crane and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114408750A (en) * | 2021-12-30 | 2022-04-29 | 湖南三一塔式起重机械有限公司 | Rotary power-loss anti-lock method and system, tower crane and storage medium |
| CN114408750B (en) * | 2021-12-30 | 2022-11-29 | 湖南三一塔式起重机械有限公司 | Rotary power-loss anti-lock method and system, tower crane and storage medium |
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