CN113124074A

CN113124074A - Band-type brake safety locking mechanism

Info

Publication number: CN113124074A
Application number: CN201911391727.6A
Authority: CN
Inventors: 徐凯; 其他发明人请求不公开姓名
Original assignee: Beijing Surgerii Technology Co Ltd
Current assignee: Beijing Surgerii Robot Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-07-16
Anticipated expiration: 2039-12-30
Also published as: CN113124074B

Abstract

The invention relates to a band-type brake safety locking mechanism, which comprises: the additional locking assembly is positioned above the multiple layers of the band-type brake device and is movably arranged on the ejector rod of the band-type brake device; the starting assembly is connected with the additional locking assembly and is used for driving the additional locking assembly to axially move along the ejector rod; when the starting assembly drives the additional locking assembly to move towards the direction close to the multi-sheet layer, the additional locking assembly compresses the multi-sheet layer; the additional locking assembly releases the multi-ply layer when the activation assembly actuates the additional locking assembly in a direction away from the multi-ply layer. The locking band-type brake device is simple in structure, easy to implement and small in risk of failure of a pure mechanical structure, and can be used as a manual locking mechanism without an electromagnet, so that the locking band-type brake device can be still used even under the condition that the electromagnet fails, and the risk of failure of the whole structure caused by single failure of the band-type brake device can be avoided in important occasions.

Description

Band-type brake safety locking mechanism

Technical Field

The invention relates to a band-type brake locking mechanism, in particular to a safe locking mechanism of a multi-layer joint locking band-type brake device using an electromagnet.

Background

The locking of a rotary motion mechanism is a common mechanical problem, and although various brake band-type brake devices are various at present, few band-type brake devices capable of realizing large-torque braking in a limited volume are available. A multi-layer joint locking band-type brake device using an electromagnet has been developed by beijing kojiki technology limited and applied for a national invention patent (publication number: CN109386557A), and the locking band-type brake device can realize large torque locking at any rotating position under the condition of occupying a small space.

However, the locking band-type brake device has high requirements on the machining precision of multi-layer gaps and parts, and the possibility of insufficient locking force exists under the condition of a large number of using conditions, so that a safety locking mechanism is added when the locking band-type brake device is used in some important occasions (such as medical equipment). In addition, since a plurality of locking band-type brake devices are often used together, it is necessary to realize a safety lock mechanism that controls a plurality of band-type brakes with one switch as much as possible.

Disclosure of Invention

In view of the above problems, the present invention provides a safety locking mechanism of a multi-layer joint locking band-type brake device using an electromagnet.

In order to achieve the purpose, the invention adopts the following technical scheme: a band-type brake safety locking mechanism, comprising: the additional locking assembly is positioned above the multiple layers of the band-type brake device and is movably arranged on the ejector rod of the band-type brake device; the starting assembly is connected with the additional locking assembly and is used for driving the additional locking assembly to axially move along a mandril of the band-type brake device; when the starting assembly drives the additional locking assembly to move towards the direction close to the multiple layers of the band-type brake device, the additional locking assembly compresses the multiple layers of the band-type brake device; when the starting assembly drives the additional locking assembly to move towards the direction far away from the multiple layers of the band-type brake device, the additional locking assembly releases the multiple layers of the band-type brake device.

The band-type brake safety locking mechanism preferably comprises: the additional ejector rod is sleeved outside the ejector rod of the band-type brake device and is in clearance fit with the ejector rod, and the first end of the additional ejector rod penetrates through the retainer of the band-type brake device; at least one end of the locking pressure beam is movably sleeved outside the ejector rod of the band-type brake device and is connected with the second end of the additional ejector rod; the restoring spring is sleeved on the additional ejector rod, and two ends of the restoring spring respectively abut against the locking compression beam and the retainer of the band-type brake device; the starting assembly is connected with the locking pressing beam, and the locking pressing beam is driven to move towards the direction close to or far away from the multi-slice layer of the contracting brake device through the starting assembly, so that the additional ejector rod compresses or loosens the multi-slice layer of the contracting brake device.

The band-type brake safety locking mechanism, preferably, when band-type brake device is a plurality of, additional locking Assembly still includes: the movable sliding block penetrates through a locking pressure beam arranged in the first internal contracting brake device and then is connected with the starting assembly, and only axial relative linear motion exists between the movable sliding block and the locking pressure beam in the first internal contracting brake device; and the first end of the force transmission rope is connected with the movable sliding block, and the second end of the force transmission rope is connected with the locking pressing beam arranged in the rest contracting brake devices.

The contracting brake safety locking mechanism preferably further comprises a direction-changing pulley, the direction-changing pulley is rotatably mounted on the retainer of the first contracting brake device, and the second end of the force transmission rope is connected with the locking pressing beams arranged in the rest contracting brake devices after being turned by the direction-changing pulley.

Band-type brake safety locking mechanism, preferably, the starting component is the starting knob, just left-handed screw and right-handed screw have on the starting knob, left-handed screw and right-handed screw respectively with locking in the first band-type brake device presses roof beam and removal slider threaded connection, just locking in the first band-type brake device presses the roof beam and removes the screw thread on the slider to revolve to with two sections screw threads on the starting knob revolve to corresponding.

The band-type brake safety locking mechanism is characterized in that the starting assembly is a starting knob, the locking pressing beam is directly connected with the starting knob in a threaded mode, and a stop block used for limiting the starting knob to move axially is arranged on the starting knob.

Preferably, the band-type brake safety locking mechanism is characterized in that the band-type brake devices are connected in parallel in a locking mode, namely more than two force transmission ropes are led out from the lower end of the movable sliding block to respectively stretch locking cross beams in the rest of the band-type brake devices, so that the band-type brake devices are locked synchronously.

Preferably, the band-type brake safety locking mechanism is characterized in that a plurality of band-type brake devices are locked in series, namely, the force transmission rope is led out from the locking pressure beam in the second band-type brake device to be connected with the locking pressure beam of the third band-type brake device, and the like, so that the synchronous locking of the plurality of band-type brake devices is realized.

The band-type brake safety locking mechanism preferably adopts a series-parallel locking mode, namely, a parallel locking mode and a series locking mode.

Due to the adoption of the technical scheme, the invention has the following advantages: 1. the invention adds an additional safety locking mechanism on the existing locking band-type brake device, and the safety locking mechanism can avoid the risk of the failure of the whole structure caused by the single failure of the locking band-type brake device in important occasions. 2. The safety locking mechanism is simple in structure, easy to implement, small in risk of failure of a pure mechanical structure, and capable of being used as a manual locking mechanism without an electromagnet, so that the locking band-type brake device can still be used even if the electromagnet fails. 3. The safety locking mechanism only adopts one starting knob, can control two or more internal contracting brake mechanisms to be locked simultaneously only by using the starting knob, is very convenient to operate, and saves time and labor. 4. The locking mechanism adopts the combined action of a plurality of additional ejector rods and the ejector rods of the locking band-type brake device, so that the locking torque of the locking band-type brake device can be greatly increased.

Drawings

FIG. 1 is a schematic structural view of a multi-layer joint locking band-type brake device;

fig. 2 is a schematic connection diagram of a safety locking mechanism and a brake device according to an embodiment of the present invention;

FIG. 3 is a sectional view of the safety locking mechanism and the band-type brake device according to the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the safety locking mechanism of the embodiment of the present invention;

FIG. 5(a) is a schematic position diagram of components of the internal contracting brake device when the electromagnet is not acted;

FIG. 5(b) is a schematic position diagram of each component of the internal contracting brake device when the electromagnet acts;

FIG. 5(c) is a schematic position diagram of each component of the internal contracting brake device when the electromagnet and the safety locking mechanism are both activated;

FIG. 6 is a schematic view of the start knob according to the embodiment of the present invention;

FIG. 7 is a schematic view of locking of a single band-type brake device;

FIG. 8 is a schematic view of a plurality of band-type brake devices locked in parallel;

FIG. 9 is a schematic view of a plurality of band-type brake devices being locked in series;

fig. 10 is a schematic diagram of series-parallel locking of a plurality of band-type brake devices.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

Fig. 1 shows a multi-layer joint locking band-type brake device using an electromagnet, which mainly comprises a multi-layer 001, an electromagnet 002, an ejector rod 003, a retainer 004, a steel absorbing block 005, a cross roller bearing 006 and the like. The inner ring and the outer ring of the multi-piece layer 001 are respectively contacted with the inner ring and the outer ring of the crossed roller bearing 006, the positions of the inner ring and the outer ring of the multi-piece layer 001 are overlapped but have a small gap, the electromagnet 002 acts under the power-off state, the steel suction block 005 is attracted by the electromagnet 002, so that the ejector rod 003 is driven to press the overlapped area of the inner ring and the outer ring of the multi-piece layer 001, the relative rotation of the inner ring and the outer ring of the crossed roller bearing 006 is locked, and the locking state of the band-type; electromagnet 002 magnetism disappears under the on-state, ejector pin 003 is popped out, and the outer lane breaks away from the laminating state in the multilayer 001, and crossed roller bearing 006 can rotate relatively to unblock band-type brake device's locking state.

As shown in fig. 2 to 4, the band-type brake safety locking mechanism provided by the present embodiment includes: the first additional ejector rod 17 is sleeved outside the ejector rod 003 of the first band-type brake device and is in clearance fit with the ejector rod 003 of the first band-type brake device, the first end of the first additional ejector rod 17 penetrates through the retainer 004 of the first band-type brake device, and the first additional ejector rod 17 and the ejector rod 003 of the first band-type brake device respectively perform the function of compressing the multiple layers 001 of the first band-type brake device without mutual influence; at least one end of the first locking compression beam 15 is movably sleeved outside the ejector rod 003 of the first band-type brake device and is connected with the second end of the first additional ejector rod 17; the first restoring spring 16 is sleeved on the first additional ejector rod 17, and two ends of the first restoring spring 16 respectively abut against the first locking compression beam 15 and the retainer 004 of the first band-type brake device; the movable sliding block 12 is arranged on the first locking pressing beam 15, and the movable sliding block 12 and the first locking pressing beam 15 do not rotate relatively and only do relative linear motion along the axial direction; the starting knob 11 is started, and the movable sliding block 12 penetrates through the first locking pressing beam 15 to be connected with the starting knob 11 through threads; the second additional ejector rod 27 is sleeved outside the ejector rod 003 of the second band-type brake device and is in clearance fit with the ejector rod 003 of the second band-type brake device, the first end of the second additional ejector rod 27 penetrates through the retainer 004 of the second band-type brake device, and the second additional ejector rod 27 and the ejector rod 003 of the second band-type brake device respectively perform the function of compressing the multiple layers 001 of the second band-type brake device without mutual influence; at least one end of the second locking pressing beam 25 is movably sleeved outside the ejector rod 003 of the second band-type brake device and is connected with the second end of the second additional ejector rod 27; the second restoring spring 26 is sleeved on the second additional ejector rod 27, and two ends of the second restoring spring 26 respectively abut against the second locking and pressing beam 25 and the retainer 004 of the second band-type brake device; and a first end of the force transmission rope 14 is connected with the movable sliding block 12, and a second end of the force transmission rope 14 is connected with the second locking pressing beam 25 after being steered through a direction-changing pulley 13 arranged on a retainer 004 of the first band-type brake device.

The working principle of the band-type brake safety locking mechanism in the embodiment is as follows: the relative position between the movable sliding block 12 and the first locking compression beam 15 is changed by rotating the starting knob 11, then the distance between the first locking compression beam 15 and the second locking compression beam 25 is changed by the force transmission rope 14, and when the distance between the first locking compression beam 15 and the second locking compression beam 25 is shortened, the first locking compression beam 15 and the second locking compression beam 25 respectively drive the first additional ejector rod 17 and the second additional ejector rod 27 to respectively compress the multiple layers 001 of the first band-type brake device and the second band-type brake device; when the distance between the first locking pressing beam 15 and the second locking pressing beam 25 increases, the first locking pressing beam 15 and the second locking pressing beam 25 respectively drive the first additional ejector rod 17 and the second additional ejector rod 27 to be away from the multiple layers 001 of the first band-type brake device and the second band-type brake device under the action of the first restoring spring 16 and the second restoring spring 26.

When the band-type brake safety locking mechanism provided by the embodiment is matched with the used locking band-type brake device, the working process is as follows: in an initial state, the electromagnet 002 is electrified (as shown in fig. 5 (a)), the steel absorbing block 005 is separated from the electromagnet 002, the ejector rod 003 and the first additional ejector rod 16 of the first band-type brake device are both separated from the multiple layers 001 of the first band-type brake device, at this time, the inner ring and the outer ring of the crossed roller bearing 006 of the first band-type brake device can freely rotate, and the first band-type brake device does not work; then the electromagnet 002 is powered off (as shown in fig. 5 (b)), the steel absorbing block 005 and the electromagnet 002 of the first band-type brake device are absorbed, the steel absorbing block 005 drives the ejector rod 003 of the first band-type brake device to downwards compress the multi-layer 001, at this time, the inner ring and the outer ring of the crossed roller bearing 006 are locked, the first band-type brake device is operated, but at this time, the first additional ejector rod 17 does not compress the multi-layer 001 of the first band-type brake device, and the safety locking mechanism does not operate; finally, the start knob 11 is rotated to move the first locking pressing beam 15 and the second locking pressing beam 25 towards the direction of pressing the multiple layers 001 of the first band-type brake device and the second band-type brake device, respectively, and finally, the first additional push rod 17 and the second additional push rod 27 are pressed against the multiple layers 001 of the first band-type brake device and the second band-type brake device, respectively (as shown in fig. 5 (c)). Since the force of the force transmission rope 14 pulling the first locking compression beam 15 and the second locking compression beam 25 belongs to the interaction force, the force of the first additional ejector rod 17 and the second additional ejector rod 27 compressing the multiple layers 001 of the first band-type brake device and the second band-type brake device is the same, i.e. the compression degree is the same.

In the above embodiment, preferably, as shown in fig. 6, the actuating knob 11, the first locking pressing beam 15 and the moving slider 12 may be connected in the following manner: the starting knob 11 is provided with a left-handed thread 111 and a right-handed thread 112, the left-handed thread 111 and the right-handed thread 112 are respectively in threaded connection with the first locking pressing beam 15 and the movable slider 12, and the thread directions of the first locking pressing beam 15 and the movable slider 12 correspond to the thread directions of the two sections of the starting knob 11. Therefore, the design makes the starting knob 11 have two connections and is more stable, and on the other hand, every time the starting knob 11 rotates for one circle, the distance between the first locking pressing beam 15 and the moving slide block 12 is changed by two times, and the total number of rotation is less.

In the above embodiment, preferably, as shown in fig. 7, the safety locking mechanism can lock only one locking band-type brake device, and at this time, the moving slider 12 can be removed, the first locking pressing beam 15 is directly connected with the thread of the starting knob 11, and the stopper 19 is added to limit the axial movement of the starting knob 11, so that the first locking pressing beam 15 can be moved up and down by rotating the starting knob 11 to press or release the first additional push rod 17 to or from the multi-layer 001.

In the above embodiment, as shown in fig. 8, preferably, two force transmission ropes 14 (which are only an example, but not limited thereto, and may be three or more) are led out from the lower end of the movable slider 12 to respectively stretch the second locking beam 25 of the second band-type brake device and the third locking beam 35 of the third band-type brake device, so as to realize synchronous locking of the three arresting band-type brake devices, which is called parallel locking.

In the above embodiment, preferably, as shown in fig. 9, a force transmission rope 24 is further extended out from the second locking pressing beam 25 of the second band-type brake device to be connected with the third locking pressing beam 35 of the third band-type brake device, and so on, so as to realize synchronous locking of more locking band-type brake devices, which is called serial locking.

In the above embodiment, preferably, as shown in fig. 10, the above two connection modes of parallel locking and series locking can also be adopted at the same time, and this mode is called as series-parallel locking.

The above embodiments are only used for illustrating the present invention, and the structure, connection mode, manufacturing process, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A band-type brake safety locking mechanism, its characterized in that includes:

the additional locking assembly is positioned above the multiple layers of the band-type brake device and is movably arranged on the ejector rod of the band-type brake device;

the starting assembly is connected with the additional locking assembly and is used for driving the additional locking assembly to axially move along a mandril of the band-type brake device;

when the starting assembly drives the additional locking assembly to move towards the direction close to the multiple layers of the band-type brake device, the additional locking assembly compresses the multiple layers of the band-type brake device; when the starting assembly drives the additional locking assembly to move towards the direction far away from the multiple layers of the band-type brake device, the additional locking assembly releases the multiple layers of the band-type brake device.

2. The band-type brake safety locking mechanism according to claim 1, wherein the additional locking assembly comprises:

the additional ejector rod (17) is sleeved outside the ejector rod of the band-type brake device and is in clearance fit with the ejector rod, and the first end of the additional ejector rod (17) penetrates through the retainer of the band-type brake device;

at least one end of the locking pressure beam (15) is movably sleeved outside the ejector rod of the band-type brake device and is connected with the second end of the additional ejector rod (17);

the restoring spring (16) is sleeved on the additional ejector rod (17), and two ends of the restoring spring (16) respectively abut against the locking pressing beam (15) and the retainer of the band-type brake device;

the starting assembly is connected with the locking pressing beam (15), and the locking pressing beam (15) is driven to move towards the direction close to or far away from the multi-layer of the contracting brake device through the starting assembly, so that the additional ejector rod (17) compresses or loosens the multi-layer of the contracting brake device.

3. The band-type brake safety locking mechanism according to claim 2, wherein when there are a plurality of band-type brake devices, the additional locking assembly further comprises:

the movable sliding block (12) penetrates through a locking pressure beam (15) in the first band-type brake device and then is connected with the starting assembly, and only axial relative linear motion exists between the movable sliding block (12) and the locking pressure beam (15) in the first band-type brake device;

the first end of the force transmission rope (14) is connected with the movable sliding block (12), and the second end of the force transmission rope (14) is connected with a locking pressing beam (15) arranged in the rest of the internal contracting brake devices.

4. The band-type brake safety locking mechanism according to claim 3, characterized in that the additional locking assembly further comprises a direction-changing pulley (13), the direction-changing pulley (13) is rotatably mounted on a holder of the first band-type brake device, and a second end of the force transmission rope (14) is connected with a locking pressing beam (15) arranged in the rest of the band-type brake devices after being turned by the direction-changing pulley (13).

5. The band-type brake safety locking mechanism according to claim 3, characterized in that the starting component is a starting knob (11), the starting knob (11) is provided with a left-handed thread and a right-handed thread, the left-handed thread and the right-handed thread are respectively in threaded connection with the locking pressing beam (15) and the movable slider (12) in the first band-type brake device, and the thread directions of the locking pressing beam (15) and the movable slider (12) in the first band-type brake device correspond to the thread directions of the two sections on the starting knob (11).

6. The band-type brake safety locking mechanism according to claim 2, characterized in that the starting component is a starting knob (11), the locking pressing beam (15) is directly connected with the starting knob (11) in a threaded manner, and a stop block (19) for limiting the axial movement of the starting knob (11) is arranged on the starting knob (11).

7. The band-type brake safety locking mechanism according to claim 3, characterized in that a plurality of the band-type brake devices are locked in parallel, that is, more than two force transmission ropes (14) are led out from the lower end of the movable sliding block (12) to respectively stretch the locking cross beams (15) of the rest of the band-type brake devices, so as to realize the synchronous locking of the plurality of the band-type brake devices.

8. The band-type brake safety locking mechanism according to claim 3, characterized in that a plurality of the band-type brake devices are locked in series, that is, a force transmission rope (14) is led out from a locking pressure beam (15) of a second band-type brake device to be connected with a locking pressure beam (15) of a third band-type brake device, and so on, so as to realize synchronous locking of the plurality of the band-type brake devices.

9. The band-type brake safety locking mechanism according to claim 7 and 8, characterized in that a plurality of the band-type brake devices adopt a parallel connection locking mode, namely, adopt the parallel connection locking mode and the series connection locking mode at the same time.