CN113974860B - Wedge block self-locking type brake device and magnetic anchoring equipment - Google Patents
Wedge block self-locking type brake device and magnetic anchoring equipment Download PDFInfo
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- CN113974860B CN113974860B CN202111237766.8A CN202111237766A CN113974860B CN 113974860 B CN113974860 B CN 113974860B CN 202111237766 A CN202111237766 A CN 202111237766A CN 113974860 B CN113974860 B CN 113974860B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/10—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B90/14—Fixators for body parts, e.g. skull clamps; Constructional details of fixators, e.g. pins
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/10—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B90/14—Fixators for body parts, e.g. skull clamps; Constructional details of fixators, e.g. pins
- A61B90/17—Fixators for body parts, e.g. skull clamps; Constructional details of fixators, e.g. pins for soft tissue, e.g. breast-holding devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- General Engineering & Computer Science (AREA)
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- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
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- Heart & Thoracic Surgery (AREA)
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- Neurosurgery (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a wedge block self-locking type brake device which comprises a lock shaft part, a guide part, a bolt part and a control part, wherein the lock shaft part is fixedly arranged at a rotary joint in magnetic anchoring equipment, the guide part is fixedly arranged at the upper part of the lock shaft part, the bolt part is accommodated in a cavity between the lock shaft part and the guide part and axially slides, the bolt part is in sliding connection with the guide part, the control part is connected with the bolt part through a brake cable, and the self-locking type brake device can be switched between a self-locking state and a release state by operating a handle of the control part, so that the magnetic anchoring equipment is controlled to lock or restore a free suspension state at any position. The invention also provides a magnetic anchoring device adopting the self-locking type braking device. The self-locking type brake device disclosed by the invention can realize multi-joint synchronous braking by utilizing the friction angle self-locking principle of the wedge-shaped block and applying smaller driving force externally, has small and simple appearance and large braking torque, and has great advantages compared with the traditional brake device.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a wedge block self-locking type brake device and magnetic anchoring equipment.
Background
The magnetic anchoring technology is a technology for enabling an anchoring magnet to carry out non-contact space anchoring on a target magnet by utilizing magnetic attraction between magnets, and the application of the technology in endoscopic surgery has the advantages of reducing the number of stamping cards and reducing postoperative pain and complications, and is mature in clinical application of surgery at present.
The magnetic anchoring technology comprises an external anchoring magnet and an internal target magnet, wherein the external anchoring magnet is usually heavy, special power assisting equipment is required for auxiliary movement and fixation, and the power assisting equipment is determined to be light and flexible enough for the movement of the external anchoring magnet due to the specificity of operation; the rigidity during locking must be great enough to prevent surgical accidents caused by false touching of the booster device; the locking, releasing and switching are flexible and quick; the occupation of the operation space is small.
The electromagnetic braking device disclosed in the Chinese patent application CN110994889A and the magnetic powder braking device disclosed in the CN207935320U both use the magnetic force generated when the electromagnet is electrified to enable braking force to be generated between the turntable and the friction plate or the magnetic powder, and the braking force is positively related to the size of the coil of the electromagnet and the outer diameter of the turntable, so that the volume of the electromagnetic braking device is generally huge and the electromagnetic braking device must be externally connected with a power supply for use in order to generate enough braking force, and the structure is complex.
The drum brake structure disclosed in the chinese patent application CN211715581U and the hydraulic disc brake device disclosed in CN105691527B both use a labor-saving mechanism to amplify the braking driving force into the pressure between friction plates, the pressure is converted into braking friction force, when the volume is limited, the braking torque provided by the drum brake or the disc brake device is limited, when the larger braking torque is needed, the driving force, the driving stroke or the outer diameter of the brake disc are correspondingly increased, and the requirements of convenience in braking, small volume, multi-joint locking and the like cannot be met.
The locking shaft device disclosed in the Chinese patent applications CN209037826U and CN203497164U has the advantages of simpler structure and large locking moment, but cannot realize stepless braking, has complex locking operation, and is not suitable for occasions needing frequent switching.
Therefore, there is a need for a braking device and a magnetic anchoring device using the same that are compact in size, high in locking strength, small in braking driving force, and capable of simultaneously locking multiple joints steplessly.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the following solutions:
in a first aspect, the present invention provides a wedge self-locking brake device, which includes a lock shaft portion, a guide portion, a plug portion, and a control portion, wherein the lock shaft portion is fixedly disposed at a rotary joint in a magnetic anchoring device, the guide portion is fixedly mounted on an upper portion of the lock shaft portion, the plug portion is accommodated in a cavity between the lock shaft portion and the guide portion to slide along an axial direction, the plug portion is slidably connected with the guide portion, and the control portion is connected with the plug portion through a brake cable.
Further, the lock shaft portion includes star gear, overhead gage, lower baffle, pivot, miniature spring and wedge, wherein:
the star wheel is uniformly distributed with a plurality of spring mounting slots along the circumferential direction, the contact surfaces of the star wheel and the wedge block are symmetrically distributed along the circumferential direction, and the contact surfaces adopt any one of eccentric arc surfaces, logarithmic curved surfaces and Archimedes curved surfaces;
the upper baffle and the lower baffle are respectively fixedly arranged at the upper end and the lower end of the star wheel;
the star wheel, the upper baffle and the lower baffle form an integral structure which is fixedly arranged at a rotary joint of the magnetic anchoring device and is coaxial with a rotary shaft of the rotary joint;
the rotating shaft is coaxial with the star wheel and is rigidly connected with the rotating shaft of the magnetic anchoring device;
the wedge-shaped blocks are annularly and uniformly distributed between the rotating shaft and the star wheel and can move along the circumferential direction of the rotating shaft;
the miniature springs are uniformly distributed between two adjacent wedge blocks, thrust along the circumferential direction of the rotating shaft is applied to the wedge blocks, and the sizes of the thrust born by the miniature springs on the two adjacent wedge blocks are consistent and the directions are opposite.
Further, the wedge block is respectively attached to the star wheel and the rotating shaft under the thrust action of the miniature spring, and when the pressure angles between the wedge block and the star wheel and between the wedge block and the rotating shaft are smaller than the minimum friction angle, the rotating shaft, the wedge block and the star wheel form a self-locking structure.
Further, the guide part includes guide holder, reset spring, guide post, pulley shaft, pulley, brake pipe and brake cable, wherein:
the guide seat is fixedly arranged on the outer side of the upper baffle of the lock shaft part;
the two ends of the reset spring are respectively connected with the guide seat and the bolt part and are used for applying thrust force to the bolt part to move to one side of the lock shaft part;
one end of the guide post is fixedly connected with the top of the cavity in the guide seat, the other end of the guide post is in sliding connection with the bolt part, and the axial direction of the guide post is parallel to the rotating shaft of the rotating shaft;
the pulley shaft is fixedly arranged at the top of the cavity in the guide seat;
the pulley is rotationally connected with the pulley shaft;
the two ends of the brake pipe are respectively connected with the guide seat and the control part;
the brake cable movably penetrates through the brake tube, and two ends of the brake cable are respectively connected with the bolt part and the control part.
Further, the latch portion includes a latch plate, a bushing, a clip, and a taper pin, wherein:
the inner hole of the wire clamping column is fixedly connected with the tail end of the brake wire, and the outer side of the wire clamping column is fixedly connected with the latch plate;
the bushing is fixedly connected with the latch plate, an inner hole of the bushing is in sliding connection with the guide post, the inner diameter of the bushing is larger than the outer diameter of the guide post, and the mounting positions of the bushing correspond to the guide posts one by one and are coaxial; the taper pins comprise a large end and a small end, and the taper pins are uniformly distributed along the circumferential direction of the latch plate.
Further, the taper pins are axially positioned in the gaps between every two pairs of wedge blocks, and the distances from the centers of the taper pins to the adjacent two wedge blocks are equal.
Furthermore, the bolt plate is made of magnetic conductive materials.
Further, the guide part comprises a guide seat, a return spring and a guide post, wherein: the guide seat is fixedly arranged on the outer side of the upper baffle plate of the lock shaft part, an electromagnet is arranged on the lower surface of the top of the cavity of the guide seat, and when the electromagnet is electrified, the latch plate compresses the reset spring to move upwards under the action of a magnetic field, and the lock shaft part is in a locking state; when the electromagnet is powered off, the latch plate moves towards the lock shaft part side under the thrust of the reset spring, and the lock shaft part is in a release state; the two ends of the reset spring are respectively connected with the guide seat and the bolt part and are used for applying thrust force to the bolt part to move to one side of the lock shaft part; one end of the guide post is fixedly connected with the top of the cavity in the guide seat, the other end of the guide post is in sliding connection with the bolt part, and the axial direction of the guide post is parallel to the rotating shaft of the rotating shaft.
Further, the control portion includes support, apron, bottom plate, clamp wire piece, step round pin, stop pin, sliding plate, connecting rod, handle and eccentric wheel, wherein:
the bottom plate is fixedly connected with the operation end of the magnetic anchoring device;
the upper end surface and the lower end surface of the bracket are respectively and fixedly connected with the cover plate and the bottom plate, the side surface is fixedly connected with the brake pipe, and the bottom surface is provided with a limit step structure;
the sliding plate is connected with the bracket in a sliding manner and can translate along a fixed direction in a limit step structure of the bracket, a wire clamping block, a step pin and a stop pin are arranged on the surface of the bracket, and the wire clamping block is fixedly connected with the brake cable;
the wire clamping block is provided with at least one fastening screw hole, and the fastening screw hole can independently adjust the tightness of each brake wire;
the handle is rotationally connected with the cover plate;
the eccentric wheel is fixedly connected with the handle;
the two ends of the connecting rod are respectively connected with the step pin and the eccentric wheel in a rotating way; the stop pin is used for limiting the swing angle of the connecting rod.
Further, the brake tube and the built-in brake cable are respectively at least one, the bracket is connected with at least one brake tube, the cable clamping block is connected with at least one brake cable, and when the cable clamping block moves along with the sliding plate, the linkage brake cable slides in the brake tube.
Further, the guide part includes guide holder, reset spring, guide post, brake pipe and brake cable, wherein: the guide seat is fixedly arranged on the outer side of the upper baffle of the lock shaft part;
the two ends of the reset spring are respectively connected with the guide seat and the bolt part and are used for applying thrust force to the bolt part to move to one side of the lock shaft part;
one end of the guide post is fixedly connected with the top of the cavity in the guide seat, the other end of the guide post is in sliding connection with the bolt part, and the axial direction of the guide post is parallel to the rotating shaft of the rotating shaft;
the hollow structure of the brake pipe accommodates a brake cable, and two ends of the brake pipe are respectively connected with the guide seat and the control part;
the two ends of the brake cable are respectively connected with the bolt part and the control part, the brake pipe is fixedly connected with the top opening of the guide seat, and the brake cable is directly out from the guide seat opening.
In a second aspect, the present invention provides a magnetic anchoring device, where the magnetic anchoring device adopts the wedge self-locking brake apparatus according to any one of the first aspect, and further includes a first rotary joint, a second rotary joint, a third rotary joint, and a universal rotary magnetic head, the lock shaft portion, the guide portion, and the plug pin portion of the wedge self-locking brake apparatus are respectively mounted on the first rotary joint, the second rotary joint, and the third rotary joint of the magnetic anchoring device, and are coaxial with rotation axes of the first rotary joint, the second rotary joint, and the third rotary joint, and the control portion is mounted at a cantilever end of the magnetic anchoring device, and the first rotary joint, the second rotary joint, and the third rotary joint of the magnetic anchoring device are set to be suspended or locked in any state by operating the control portion.
The beneficial effects are that: the traditional band-type brake device is large in appearance, large in brake blank angle and in direct proportion to the brake torque and the operation force, when a better brake effect is needed, the required operation force is larger, and in addition, generally, one operation handle can only control the brake device with one joint.
The self-locking type brake device and the magnetic anchoring equipment thereof have compact structure, small and compact appearance, large braking torque, small braking operation force and no correlation with the braking torque, and can realize multi-joint synchronous braking by applying smaller driving force outside by utilizing the principle of friction angle self-locking, and one control part can simultaneously control a plurality of brake devices.
Drawings
Fig. 1: the wedge self-locking brake device in a preferred embodiment of the invention is structurally schematic.
Fig. 2: the wedge self-locking brake device shown in fig. 1 is a partially sectional exploded structure schematic view.
Fig. 3: the wedge self-locking brake device shown in fig. 1 is a schematic top view of the lock shaft.
Fig. 4 (a): fig. 3 is a schematic view of a partially enlarged structure of the self-locking state of I.
Fig. 4 (b): fig. 3 is a schematic view of a partially enlarged structure of I in a released state.
Fig. 5: fig. 1 is a schematic view showing a bottom view of a guide portion of a wedge self-locking brake device.
Fig. 6 (a): the control part of the wedge self-locking brake device shown in fig. 1 is a schematic diagram of a partial sectional structure in a self-locking state.
Fig. 6 (b): the control part of the wedge self-locking brake device shown in fig. 1 is a partially sectional schematic structural view in a released state.
Fig. 7: the magnetic anchoring device of the wedge self-locking brake device in a preferred embodiment of the invention is structurally schematic.
Fig. 8: FIG. 1 is a schematic view of a partially cut-away structure of another preferred embodiment of a guide portion of a wedge self-locking brake apparatus.
Fig. 9: FIG. 1 is a schematic view of a partially cut-away structure of a further preferred embodiment of a guide portion and a plug portion of a wedge self-locking brake apparatus.
Each serial number and corresponding name are respectively:
the locking shaft 10, the guide 20, the latch 30, the control 40, the magnetic anchoring device 50, the star 101, the upper baffle 102, the lower baffle 103, the rotating shaft 104, the micro spring 105, the wedge 106, the guide holder 201, the return spring 202, the guide post 203, the pulley shaft 204, the pulley 205, the brake pipe 206, the brake cable 207, the electromagnet 208, the latch plate 301, the bushing 302, the clamp post 303, the taper pin 304, the bracket 401, the cover plate 402, the bottom plate 403, the clamp block 404, the step pin 405, the stopper pin 406, the slide plate 407, the connecting rod 408, the handle 409, and the eccentric 410.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, a schematic structural diagram of a wedge self-locking brake device according to a preferred embodiment of the present invention, wherein the wedge self-locking brake device includes a lock shaft portion 10, a guiding portion 20, a latch portion 30, and a control portion 40, the lock shaft portion 10 is fixedly mounted at a position corresponding to a rotary joint in a device, and the guiding portion 20 is fixedly mounted on the lock shaft portion 10; the latch part 30 is slidably connected with the guide part 20, and can axially slide in a space between the lock shaft part 10 and the guide part 20; the control part 40 is fixedly arranged at an operation end in the equipment, and the control part 40 is connected with the plug pin part 30 through a brake cable 207.
With further reference to fig. 2 to 4 (a), fig. 2 is a partially sectional exploded structural schematic view of the wedge self-locking type brake apparatus shown in fig. 1, fig. 3 is a top structural schematic view of a lock shaft portion in the wedge self-locking type brake apparatus shown in fig. 1, fig. 4 (a) is a partially enlarged structural schematic view of I in fig. 3 in a self-locking state, the lock shaft portion 10 includes a star wheel 101, an upper baffle 102, a lower baffle 103, a rotation shaft 104, a micro spring 105 and a wedge 106, wherein:
the inner ring of the star wheel 101 is of a uniformly distributed star-shaped structure, and a plurality of spring mounting slots are uniformly distributed along the circumferential direction;
further, the star wheel 101 is distributed with a plurality of wedge limiting grooves along the circumferential direction;
further, the contact surface of the star wheel 101 and the wedge block 106 is a working surface, and the working surface is an arc surface concentric with the rotating shaft;
further, the working profiles of the star wheel 101 are distributed symmetrically in pairs along the circumferential direction;
the upper baffle 102 and the lower baffle 103 are respectively fixedly arranged on the upper side and the lower side of the star wheel 101;
the star wheel 101, the upper baffle 102 and the lower baffle 103 form an integral structure which is fixedly arranged at a rotary joint of the magnetic anchoring device and is coaxial with a rotary shaft of the rotary joint;
the rotating shaft 104 is coaxial with the star wheel 101 and is rigidly connected with the rotating shaft of the equipment;
the curved surfaces at the two ends of the wedge-shaped block 106 are working molded surfaces thereof, and the two working molded surfaces of the wedge-shaped block 106 are respectively contacted with the working molded surfaces of the star wheel 101 and the outer circular surface of the rotating shaft 104;
further, the two working profiles of the wedge 106 may be any one of higher-order curved surfaces such as eccentric circular curved surface, logarithmic curved surface, archimedes curved surface, etc.;
further, one end of the wedge block 106, which is contacted with the working surface of the star wheel 101, is arranged in a wedge block limit groove of the star wheel 101;
further, the wedge 106 can swing slightly with the rotation axis at the contact point of the working profile of the star wheel 101;
the micro springs 105 are uniformly distributed between each pair of wedge blocks 106, and can apply thrust to the wedge blocks 106 along the circumferential direction of the rotating shaft 104, and the thrust applied to each pair of wedge blocks 106 is consistent in size and opposite in direction.
With further reference to fig. 5, a schematic bottom view of a guiding portion in the wedge self-locking brake apparatus shown in fig. 1, the guiding portion 20 includes a guiding seat 201, a return spring 202, a guiding post 203, a brake tube 206 and a brake cable 207, where:
the guide seat 201 is fixedly arranged on the outer side of the upper baffle plate 102 of the lock shaft part 10, and a cavity capable of accommodating the bolt part 30 is formed in the guide seat 201;
both ends of the return spring 202 are respectively connected with the guide holder 201 and the plug pin part 30, and can apply a pushing force to the plug pin part 30 to move towards the lock shaft part 10;
one end of the guide post 203 is fixedly connected with the top of the cavity of the guide seat 201, and the other end is in sliding connection with the bolt part 30;
further, the guide post 203 is axially parallel to the rotation axis of the rotation shaft 104;
both ends of the brake pipe 206 are respectively connected with the guide seat 201 and the control part 40;
the brake cable 207 penetrates through the brake tube 206, and two ends of the brake cable are respectively connected with the plug pin part 30 and the control part 40 and can slide in the brake tube 206;
referring to fig. 2, the latch part 30 includes a latch plate 301, a bushing 302, a wire clamping post 303 and a taper pin 304, wherein the wire clamping post 303 has a hollow cylindrical structure, an inner hole of the hollow cylindrical structure is fixedly connected with the end of the brake wire 207, and the outer side of the wire clamping post 303 is fixedly connected with the latch plate 301;
the bushing 302 is of a hollow cylindrical structure, and an inner hole of the bushing is in sliding connection with the guide post 203;
further, the bushings 302 are fixedly connected with the latch plates 301, and the installation positions of the bushings 302 are in one-to-one correspondence with and coaxial with the guide posts 203;
tapered pin 304 is a tapered pin, comprising a large end and a small end;
further, the tapered pins 304 are uniformly distributed along the circumferential direction of the latch plate 301;
further, the taper pins 304 are axially located in the gap between each two pairs of wedge blocks 106, and the distances from the centers of the taper pins 304 to the adjacent two wedge blocks 106 are equal;
further, when the lock shaft portion 10 is in the self-locking state, the large end of the tapered pin 304 is slightly larger than the gap between each two pairs of wedge blocks 106, and the small end of the tapered pin 304 is slightly smaller than the gap between each two pairs of wedge blocks 106.
Referring to fig. 4 (a), the wedge 106 is respectively attached to the star wheel 101 and the rotating shaft 104 under the thrust of the micro spring 105, when the pressure angles between the wedge 106 and the star wheel 101 and between the wedge 104 and the wedge 106 are smaller than the minimum friction angles, the sliding between the rotating shaft 104 and the wedge 106 does not occur, so that when the rotating shaft 104 receives forward or reverse rotation torque, the rotating shaft 104, the wedge 106 and the star wheel 101 form a self-locking state, and the rotating shaft 104 does not rotate.
With further reference to fig. 4 (b) which is a schematic view of a partial enlarged structure of the brake cable 207 in fig. 3 in the released state, when the brake cable 207 is not under tension, the latch portion 30 moves toward the lock shaft portion 10 side under the urging force of the return spring 202, the taper pins 304 are inserted into the gaps between each two pairs of wedge blocks 106, and at the same time, the taper surfaces of the taper pins 304 push the wedge blocks 106 to move in the direction of compressing the micro spring 105, the wedge blocks 106 are separated from the self-locking position, and the rotating shaft 104 is free to rotate; when the brake cable 207 is pulled, the brake cable 207 pulls the latch portion 30 to compress the return spring 202, so that the latch portion 30 moves toward the guide portion 20, and simultaneously, the taper pin 304 is separated from the wedge block 106, the wedge block 106 returns to the self-locking position under the force of the micro spring 105, and the rotating shaft 104 is in a locking state.
Referring to fig. 6 (a) and 6 (b), fig. 6 (a) is a schematic view of a partial sectional structure of a control part in a self-locking state of the wedge self-locking brake device shown in fig. 1, and fig. 6 (b) is a schematic view of a partial sectional structure of a control part in a release state of the wedge self-locking brake device shown in fig. 1, the control part 40 includes a bracket 401, a cover plate 402, a bottom plate 403, a wire clamping block 404, a step pin 405, a stop pin 406, a slide plate 407, a connecting rod 408, a handle 409 and an eccentric wheel 410, wherein:
the bottom plate 403 is fixedly connected to the operation end of the device;
the upper end surface and the lower end surface of the bracket 401 are respectively fixedly connected with a cover plate 402 and a bottom plate 403;
further, the side of the bracket 401 is fixedly connected to one end of the brake tube 206;
further, the bracket 401 may be coupled to at least one brake pipe 206;
further, a limiting step structure is arranged on the bottom surface of the support 401;
the sliding plate 407 is slidably connected to the support 401 and can translate along a fixed direction in a limit step structure of the support 401;
further, the slide plate 407 is fixedly mounted with a wire clamping block 404, a step pin 405 and a stopper pin 406;
the wire clamping block 404 is fixedly connected with one end of the brake wire 207;
further, the wire clamping block 404 may be connected to at least one brake wire 207;
further, the wire clamping block 404 is provided with a plurality of fastening screw holes, and the fastening screw holes can independently adjust the clamping position of each brake wire 207;
further, when the wire clamping block 404 moves along with the sliding plate 407, the brake wire 207 can be pulled to slide in the brake tube 206;
the handle 409 is rotatably connected to the cover plate 402;
the eccentric wheel 410 is fixedly connected to the handle 409 and can rotate along with the handle 409;
both ends of the connecting rod 408 are respectively rotatably connected with the step pin 405 and the eccentric wheel 410;
further, the stop pin 406 is disposed near the side dead center position of the link 408, so as to limit the swinging angle of the link 408;
when the handle 409 is rotated, the eccentric wheel 410 drives the connecting rod 408 to swing by taking the axle center of the step pin 405 as a rotating shaft, and meanwhile, the connecting rod 408 pushes the sliding plate 407 to translate, so as to form a crank slider mechanism; when the switch to the release state is needed, the handle 409 is turned, the brake cable 207 slides towards the latch part 30 under the action of the return spring 202, the taper pin 304 is inserted into the lock shaft part 10, and the lock shaft part 10 is in the release state; when the switch to the self-locking state is required, the handle 409 is turned in the opposite direction, the connecting rod 408 is turned slightly beyond the dead point of the crank slider mechanism until the dead point contacts the stop pin 406, and the slide plate 407 pulls the brake cable 207 to slide toward the control part 40, the latch part 30 compresses the return spring 202 to move reversely, the taper pin 304 is pulled away from the lock shaft part 10, and the lock shaft part 10 is in the self-locking state.
Referring to fig. 7, a schematic structural view of a magnetic anchoring device using a wedge self-locking type brake apparatus according to a preferred embodiment of the present invention, the magnetic anchoring device includes the wedge self-locking type brake apparatus and a magnetic anchoring device 50, the magnetic anchoring device 50 includes a first rotary joint 501, a second rotary joint 502, a third rotary joint 503 and a universal rotary magnetic head 504, the first rotary joint 501, the second rotary joint 502 and the third rotary joint 503 cooperate to suspend the universal rotary magnetic head 504 at the end of a cantilever at any point within a certain space range, and a lock shaft portion 10, a guide portion 20 and a latch portion 30 of the wedge self-locking type brake apparatus are mounted on the first rotary joint 501 and the second rotary joint 502 of the magnetic anchoring device 50 and coaxial with the rotation axes of the first rotary joint 501 and the second rotary joint 502; the control unit 40 is attached to the cantilever end of the magnetic anchoring device 50, and the first rotary joint 501, the second rotary joint 502, and the third rotary joint 503 of the magnetic anchoring device 50 can be suspended or locked at any spatial positions by operating the control unit 40.
In the following, the operation process of the present invention will be described by taking cholecystectomy as an example, when the magnetic anchoring device 50 of the present invention is operated, the medical staff first places the magnetic anchoring device 50 at a suitable position adjacent to the surgical sickbed, ensures that the working space of the device covers the surgical area, puts the magnetic anchoring clip with a small magnet or magnetically permeable material inside into the abdominal cavity of the patient after the patient is anesthetized, punctured, etc. according to the conventional surgical procedure, clamps the gallbladder at a suitable position, then the surgical assistant holds the universal rotary magnetic head 504 to move, and uses the magnetic force of the external anchoring magnet inside to the magnetic anchoring clip to move, lift, etc. the gallbladder.
When the universal rotary head 504 is moved to a proper position, the handle 409 in the control part 40 is operated to put the magnetic anchoring device 50 in a locked state, the doctor of the main knife performs the operation until the handle 409 is operated reversely by the surgical assistant to restore the freely suspended state, the surgical assistant can move the universal rotary head 504 to the next position, or the magnetic anchoring device 50 is reset to finish the operation. The magnetic anchoring device 50 can help a main knife doctor to keep the operation field clear, improve the operation efficiency, reduce the number of stamping cards, relieve the postoperative pain of a patient and shorten the recovery period.
Referring to fig. 8, a schematic view of a partial cross-sectional structure of another preferred embodiment of a guiding portion in the wedge self-locking type brake apparatus shown in fig. 1 is shown, in which a pulley shaft 204 and a pulley 205 may be added to the guiding portion 20 in this embodiment, wherein the pulley shaft 204 is fixedly connected to a top portion of a cavity of the guiding seat 201, the pulley 205 is rotatably connected to the pulley shaft 204, a brake pipe 206 is fixedly connected to a side surface of the guiding seat 201, and a brake cable 207 penetrates the brake pipe 206 and is connected to the plug portion 30 after being turned 90 degrees around the pulley 205.
Referring to fig. 9, a schematic partial sectional structure of a further preferred embodiment of a guiding portion and a latch portion in the wedge self-locking brake apparatus shown in fig. 1, where the embodiment may cancel a brake pipe 206 and a brake cable 207, and the latch plate 301 is made of a magnetically conductive material, and an electromagnet 208 is disposed downward on the top of a cavity of the guide holder 201, and when the electromagnet 208 is energized, the latch plate 301 compresses the return spring 202 under the action of a magnetic field to move upward, and the lock shaft 10 is in a locked state; when the electromagnet 208 is de-energized, the latch plate 301 moves toward the lock shaft portion 10 by the urging force of the return spring 202, and the lock shaft portion 10 is in a released state.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (12)
1. The utility model provides a voussoir self-locking type brake equipment, its characterized in that, voussoir self-locking type brake equipment includes lock shaft portion, guiding portion, bolt portion and control portion, and wherein lock shaft portion fixed set up the revolute joint department in magnetic anchoring equipment, guiding portion fixed mounting is in lock shaft portion upper portion, and the bolt portion holding is in the cavity between lock shaft portion and the guiding portion along axial slip, and bolt portion and guiding portion sliding connection, and control portion passes through the brake cable with bolt portion and is connected, wherein:
the guide part further comprises a reset spring, wherein two ends of the reset spring are respectively connected with the guide seat and the bolt part and are used for applying thrust force to the bolt part to move to one side of the lock shaft part;
the bolt part further comprises conical pins, wherein the conical pins comprise a large end and a small end, and the conical pins are uniformly distributed along the circumferential direction of the bolt plate;
the lock shaft part further comprises a star wheel, a rotating shaft, a miniature spring and a wedge block, wherein a plurality of spring mounting slots are uniformly distributed on the star wheel along the circumferential direction, the contact surfaces of the star wheel and the wedge block are symmetrically distributed in pairs along the circumferential direction, and the contact surfaces adopt any one of an eccentric arc surface, a logarithmic curve surface and an Archimedes curve surface; the rotating shaft is coaxial with the star wheel and is rigidly connected with the rotating shaft of the magnetic anchoring device; the wedge-shaped blocks are annularly and uniformly distributed between the rotating shaft and the star wheel and can move along the circumferential direction of the rotating shaft; the miniature springs are uniformly distributed between two adjacent wedge blocks, thrust along the circumferential direction of the rotating shaft is applied to the wedge blocks, and the sizes of the thrust born by the miniature springs on the two adjacent wedge blocks are consistent and the directions are opposite;
the control part further comprises a bracket, a wire clamping block, a step pin, a stop pin, a sliding plate, a connecting rod and an eccentric wheel, wherein the sliding plate is connected with the bracket in a sliding manner and can translate along a fixed direction in a limiting step structure of the bracket, the wire clamping block, the step pin and the stop pin are arranged on the surface of the bracket, and the wire clamping block is fixedly connected with a brake wire; the eccentric wheel is fixedly connected with the handle; the two ends of the connecting rod are respectively connected with the step pin and the eccentric wheel in a rotating way; the stop pin is used for limiting the swing angle of the connecting rod.
2. The wedge self-locking brake apparatus of claim 1, wherein the lock shaft portion further comprises an upper baffle and a lower baffle, wherein:
the upper baffle plate and the lower baffle plate are respectively fixedly arranged at the upper end and the lower end of the star wheel;
the star wheel, the upper baffle and the lower baffle form an integral structure which is fixedly arranged at the rotary joint of the magnetic anchoring device and is coaxial with the rotary shaft of the rotary joint.
3. The wedge self-locking brake apparatus according to claim 2, wherein the wedge block is respectively attached to the star wheel and the rotating shaft under the thrust of the micro spring, and when the pressure angles between the wedge block and the star wheel and between the wedge block and the rotating shaft are smaller than the minimum friction angle, the rotating shaft forms a self-locking structure with the wedge block and the star wheel.
4. The wedge self-locking brake apparatus of claim 1, wherein the guide portion comprises a guide shoe, a return spring, a guide post, a pulley shaft, a pulley, a brake pipe, and a brake cable, wherein:
the guide seat is fixedly arranged on the outer side of the upper baffle of the lock shaft part;
one end of the guide post is fixedly connected with the top of the cavity in the guide seat, the other end of the guide post is in sliding connection with the bolt part, and the axial direction of the guide post is parallel to the rotating shaft of the rotating shaft;
the pulley shaft is fixedly arranged at the top of the cavity in the guide seat;
the pulley is rotationally connected with the pulley shaft;
the two ends of the brake pipe are respectively connected with the guide seat and the control part;
the brake cable movably penetrates through the brake tube, and two ends of the brake cable are respectively connected with the bolt part and the control part.
5. The wedge self-locking brake apparatus of claim 4, wherein the latch portion comprises a latch plate, a bushing, a clamp post, and a taper pin, wherein:
the inner hole of the wire clamping column is fixedly connected with the tail end of the brake wire, and the outer side of the wire clamping column is fixedly connected with the latch plate;
the bush is fixedly connected with the latch plate, an inner hole of the bush is in sliding connection with the guide post, the inner diameter of the bush is larger than the outer diameter of the guide post, and the installation positions of the bush are in one-to-one correspondence and coaxial with the guide post.
6. The wedge self-locking brake apparatus of claim 5, wherein the tapered pin is axially located in the gap between each pair of wedge blocks and the tapered pin center is equidistant from the adjacent wedge blocks.
7. The wedge self-locking brake apparatus of claim 5, wherein the latch plate is made of magnetically permeable material.
8. The wedge self-locking brake apparatus of claim 7, wherein the guide portion comprises a guide seat, a return spring, and a guide post, wherein:
the guide seat is fixedly arranged on the outer side of the upper baffle plate of the lock shaft part, an electromagnet is arranged on the lower surface of the top of the cavity of the guide seat, and when the electromagnet is electrified, the latch plate compresses the reset spring to move upwards under the action of a magnetic field, and the lock shaft part is in a locking state; when the electromagnet is powered off, the latch plate moves towards the lock shaft part side under the thrust of the reset spring, and the lock shaft part is in a release state;
one end of the guide post is fixedly connected with the top of the cavity in the guide seat, the other end of the guide post is in sliding connection with the bolt part, and the axial direction of the guide post is parallel to the rotating shaft of the rotating shaft.
9. The wedge self-locking brake apparatus of claim 1, wherein the control portion further comprises a cover plate, a base plate, a handle, wherein:
the bottom plate is fixedly connected with the operation end of the magnetic anchoring device;
the upper end surface and the lower end surface of the bracket are respectively and fixedly connected with the cover plate and the bottom plate, the side surface is fixedly connected with the brake pipe, and the bottom surface is provided with a limit step structure;
the wire clamping block is provided with at least one fastening screw hole, and the fastening screw hole can independently adjust the tightness of each brake wire;
the handle is rotationally connected with the cover plate.
10. The wedge self-locking brake apparatus of claim 9, wherein the brake pipe and the built-in brake cable are at least one, respectively, the bracket is connected with the at least one brake pipe, the cable clamping block is connected with the at least one brake cable, and the cable clamping block slides in the brake pipe in a linkage manner when moving along with the sliding plate.
11. The wedge self-locking brake apparatus of claim 1, wherein the guide portion comprises a guide shoe, a return spring, a guide post, a brake pipe, and a brake cable, wherein:
the guide seat is fixedly arranged on the outer side of the upper baffle of the lock shaft part;
one end of the guide post is fixedly connected with the top of the cavity in the guide seat, the other end of the guide post is in sliding connection with the bolt part, and the axial direction of the guide post is parallel to the rotating shaft of the rotating shaft;
the hollow structure of the brake pipe accommodates a brake cable, and two ends of the brake pipe are respectively connected with the guide seat and the control part;
the two ends of the brake cable are respectively connected with the bolt part and the control part, the brake pipe is fixedly connected with the top opening of the guide seat, and the brake cable is directly out from the guide seat opening.
12. The wedge self-locking type brake device is characterized by further comprising a first rotary joint, a second rotary joint, a third rotary joint and a universal rotary magnetic head, wherein the lock shaft part, the guide part and the plug pin part of the wedge self-locking type brake device are respectively arranged on the first rotary joint, the second rotary joint and the third rotary joint of the magnetic anchoring device and are coaxial with the rotation shafts of the first rotary joint, the second rotary joint and the third rotary joint, the control part is arranged at the cantilever tail end of the magnetic anchoring device, and the first rotary joint, the second rotary joint and the third rotary joint of the magnetic anchoring device are set to be suspended or locked in any state by operating the control part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111237766.8A CN113974860B (en) | 2021-10-25 | 2021-10-25 | Wedge block self-locking type brake device and magnetic anchoring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111237766.8A CN113974860B (en) | 2021-10-25 | 2021-10-25 | Wedge block self-locking type brake device and magnetic anchoring equipment |
Publications (2)
| Publication Number | Publication Date |
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| CN113974860A CN113974860A (en) | 2022-01-28 |
| CN113974860B true CN113974860B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111237766.8A Active CN113974860B (en) | 2021-10-25 | 2021-10-25 | Wedge block self-locking type brake device and magnetic anchoring equipment |
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| CN (1) | CN113974860B (en) |
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| CN211995514U (en) * | 2020-03-18 | 2020-11-24 | 中交二航局第二工程有限公司 | Bidirectional emergency braking system of low-speed heavy-duty truck |
| WO2021189858A1 (en) * | 2020-03-21 | 2021-09-30 | 深圳市资福医疗技术有限公司 | Magnetic anchoring system for minimally invasive surgery, control module and auxiliary apparatus for minimally invasive surgery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB326468A (en) * | 1928-12-06 | 1930-03-06 | Midland Railway Carriage And W | Improvements in or relating to clutch mechanism |
| GB638782A (en) * | 1948-06-23 | 1950-06-14 | Sidney Russell & Sons Ltd | Improvements in locks or latch fastenings for vehicle doors |
| CN2066005U (en) * | 1990-04-02 | 1990-11-21 | 陈月辉 | Wedge driving jaw-type brake frame |
| CN104319130A (en) * | 2014-09-18 | 2015-01-28 | 平高集团有限公司 | Operating mechanism and locking device thereof |
| CN205098375U (en) * | 2015-10-09 | 2016-03-23 | 福建省新车技科技发展有限公司 | Folding electric bicycle |
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| CN207935320U (en) * | 2017-12-21 | 2018-10-02 | 长江大学 | A kind of electromagnetic powder brake gear |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113974860A (en) | 2022-01-28 |
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