CN111520449B - Gravity shaft anti-falling device applied to mechanical equipment transformation - Google Patents
Gravity shaft anti-falling device applied to mechanical equipment transformation Download PDFInfo
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- CN111520449B CN111520449B CN202010373391.7A CN202010373391A CN111520449B CN 111520449 B CN111520449 B CN 111520449B CN 202010373391 A CN202010373391 A CN 202010373391A CN 111520449 B CN111520449 B CN 111520449B
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- falling device
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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
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
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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
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/01—Monitoring wear or stress of gearing elements, e.g. for triggering maintenance
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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
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H2035/006—Gearings or mechanisms for stopping or limiting movement, e.g. stopping a movement after few turns
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/01—Monitoring wear or stress of gearing elements, e.g. for triggering maintenance
- F16H2057/014—Monitoring wear or stress of gearing elements, e.g. for triggering maintenance of friction elements in transmissions
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a gravity shaft anti-falling device applied to mechanical equipment transformation, wherein a screw rod transmission mechanism of the mechanical equipment comprises a mounting substrate, a ball screw and a servo motor, a transmission belt is arranged between a driving fluted disc of the servo motor and a driven fluted disc of the ball screw, the gravity shaft anti-falling device comprises a locking disc arranged on the driven fluted disc and a locking mechanism which is matched with the locking disc to lock the ball screw in a rotating direction, and the locking mechanism is arranged on the mounting substrate and comprises a monitoring part for monitoring the tension degree of the transmission belt. The invention can stop the screw rod in the states of looseness, tooth breakage and fracture of the transmission belt, effectively prevents falling events and improves the safety of equipment. The device is easy to realize old equipment transformation, and has the characteristics of low space requirement, convenient and efficient carrying, low cost and the like. The overall design is based on traditional lead screw drive mechanism, and the pertinence is stronger, and the structure is succinct easily to be arranged, still satisfies the equipment routine maintenance demand when playing safety protection.
Description
Technical Field
The invention relates to a gravity shaft anti-falling device applied to mechanical equipment transformation, and belongs to the technical field of machine tool transformation.
Background
The mechanical equipment designed by the scheme is vertical machining equipment, and generally, a vertical numerically controlled lathe and a Z axis of a vertical machining center are vertically installed, namely a main shaft is arranged in a lifting displacement mode. The main shaft and the saddle are driven by a servo motor through a synchronous belt to drive a ball screw to drive a screw nut seat fixed on the saddle to move up and down. Compared with direct connection, the synchronous belt transmission has no problem of concentricity of a mechanical shaft; synchronous belt drives have essentially no mechanical play.
Although the application of the synchronous belt in the servo shaft transmission field belongs to one of ideal transmission modes, the synchronous belt has a prominent defect that the belt is made of a soft material, and the tooth falling of the belt and even the breakage of the belt can occur in a high-strength continuous operation time. If the gravity shaft of the machine tool suddenly breaks a belt in the running process or standby process, the ball screw is not controlled by the rotor torsion of the servo motor/the motor pump brake, the main shaft and the saddle rapidly fall, and serious mechanical faults or even personal safety accidents are caused. In addition, when the belt is repaired or replaced, auxiliary work needs to be performed by supporting the spindle device or the locking screw rod device.
Among the present market machining equipment, all possess and prevent the locking structure that falls to the main shaft, carry out designs such as locking to the lead screw through monitoring main shaft state, on the one hand the locking structure is complicated to have increased equipment cost, and on the other hand it has space and hardware demand, hardly uses on old equipment transformation.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a gravity shaft anti-falling device applied to mechanical equipment transformation aiming at the problem that a main shaft is easy to fall down due to belt breakage and tooth breakage in the use process of a traditional vertical machine tool.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the gravity shaft anti-falling device applied to mechanical equipment transformation comprises a screw rod transmission mechanism used for driving a main shaft to lift and displace, the screw rod transmission mechanism comprises a mounting substrate, a ball screw and a servo motor, a rotating shaft of the servo motor is provided with a driving fluted disc, the ball screw is provided with a driven fluted disc, a transmission belt is arranged between the driving fluted disc and the driven fluted disc,
gravity axle anti-falling device is including setting up locking dish on the driven fluted disc and be used for with the locking dish cooperatees and rotates the locking mechanism to the locking to ball screw, locking mechanism sets up on the mounting substrate, locking mechanism is including being used for the control portion of driving belt rate of tension.
Preferably, the locking mechanism comprises a torsion seat arranged on the mounting substrate and a rocker arm matched and connected with the torsion seat,
a locking end matched with the locking disc is arranged at the free end of the rocker arm, a roller part abutted against the transmission belt is arranged on the arm body of the rocker arm,
and under the tensioning state of the transmission belt, a gap is reserved between the locking end and the locking disc.
Preferably, a detection sensor for monitoring the displacement of the rocker arm is arranged on the mounting substrate, and the detection sensor is in communication connection with a host of mechanical equipment.
Preferably, a plurality of locking tooth sections which are uniformly spaced in the circumferential direction are arranged on the locking disc, and matched locking teeth which are used for matching the locking tooth sections are arranged on the locking end.
Preferably, the lock tooth section comprises a first limit tooth, a second limit tooth and a third limit tooth which are circumferentially and continuously arranged and have gradually-increased radial protrusion sizes, a transition guide curved wall is arranged between any two adjacent lock tooth sections, one end of the transition guide curved wall is connected with the first limit tooth, and a locking groove is formed between the other end of the transition guide curved wall and the third limit tooth.
Preferably, the tooth surfaces of the first limiting tooth, the second limiting tooth and the third limiting tooth are arc-shaped surfaces.
Preferably, the locking disc is detachably connected with the driven fluted disc.
Preferably, the locking disc is a stamped part.
The invention has the following beneficial effects:
1. the screw rod can be stopped in the states of looseness, tooth breakage and fracture of the transmission belt, so that the falling events of the saddle and the main shaft are effectively prevented, and the safety of equipment is improved.
2. The device is easy to realize old equipment transformation, and has the characteristics of low space requirement, convenient and efficient carrying, low cost and the like.
3. The overall design is based on traditional lead screw drive mechanism, and the pertinence is stronger, and the structure is succinct easily to be arranged, still satisfies the equipment routine maintenance demand when playing safety protection.
Drawings
Fig. 1 is a schematic structural diagram of a gravity shaft anti-falling device applied to mechanical equipment transformation.
Fig. 2 is a schematic diagram of a preferred embodiment of the present invention.
Detailed Description
The invention provides a gravity shaft anti-falling device applied to mechanical equipment transformation. The technical solution of the present invention is described in detail below with reference to the accompanying drawings so that it can be more easily understood and appreciated.
Be applied to gravity axle anti-falling device that mechanical equipment transformed, as shown in fig. 1, mechanical equipment is including being used for driving main shaft lift displacement's screw drive mechanism 1, and screw drive mechanism 1 includes mounting substrate 11, ball screw 12 and servo motor 13, is equipped with driving fluted disc 2 on servo motor 13's the rotation axis, is equipped with driven fluted disc 3 on the ball screw 12, is equipped with drive belt 4 between driving fluted disc 2 and the driven fluted disc 3.
The above is the mechanical equipment structure in the prior art, namely, the driving toothed disc 2 drives the driven toothed disc 3 through the transmission belt 4 by the driving of the rotating shaft of the servo motor 13, so that the rotation control of the ball screw 12 is realized, and the lifting displacement driving of the main shaft is realized.
The transmission belt 4 is a toothed synchronous belt, and can have the phenomena of looseness, tooth breakage and belt breakage in the long-term operation process, when the phenomena occur, the ball screw cannot be subjected to the torsion of the servo motor, and can rotate freely under the action of the weight of the saddle and the main shaft, so that the saddle and the main shaft fall down, equipment failure occurs, and serious persons can cause safety accidents.
To above-mentioned condition, the present case has proposed a gravity axle anti-falling device that easily old equipment was reformed transform, and it can be under the belt lax, disconnected tooth and disconnected band phenomenon condition appearing, rotate to ball screw and hinder and stop to prevent that saddle and main shaft condition of falling from taking place, this gravity axle anti-falling device is lower to the space requirement, satisfies old equipment and reforms transform the demand.
Specifically, as shown in fig. 1, the locking mechanism includes a locking plate 5 disposed on the driven toothed plate 3, and a locking mechanism 6 for cooperating with the locking plate 5 to lock the rotation of the ball screw, the locking mechanism 6 is disposed on the mounting substrate 11, and the locking mechanism 6 includes a monitoring portion 7 for monitoring the tension of the transmission belt 4.
Specifically, the monitoring unit 7 constantly monitors the tension of the transmission belt 4, and when the transmission belt 4 is loosened, broken teeth or broken belts, the locking mechanism 6 is triggered to stop the locking plate 5 in time, and the locking plate 5 and the driven toothed plate 3 are in a connected state, and the driven toothed plate 3 is locked, so that the rotation stop operation of the ball screw is realized.
In one embodiment, the locking mechanism 6 includes a torsion seat 61 disposed on the mounting substrate 11, and a rocker arm 62 coupled to the torsion seat 61, a locking end 63 for engaging with the locking plate 5 is disposed on a free end of the rocker arm 62, a roller portion for abutting against the driving belt 4 is disposed on an arm body of the rocker arm 62, the roller portion is the monitoring portion 7, and the locking end 63 is spaced from the locking plate 5 when the driving belt 4 is in a tensioned state.
Specifically, under normal conditions of the transmission belt 4, the transmission belt is in a tensioned state, i.e., a tight working state, and the roller portion is pressed against the transmission belt 4 under the torsion state of the torsion seat 61.
When the transmission belt 4 is in a state of being broken in teeth, belts and elastic deformation to a certain degree, the transmission belt is loosened, the support of the roller part is lost, at the moment, the locking end 63 of the rocker arm 62 is attached to the locking disc 5 under the action of the torque base 61, and the locking end 63 is matched with the locking disc 5 in a locking manner to block the rotation of the ball screw.
The locking mechanism 6 is directly mounted on the mounting substrate 11, no additional carrier is needed, monitoring and stopping are carried out in a physical contact mode, and the locking mechanism has the advantages of cost and easiness in arrangement and construction.
In one embodiment, the mounting substrate 11 is provided with a detection sensor 8 for monitoring the displacement of the swing arm 62, and the detection sensor 8 is in communication connection with a host machine of the mechanical device.
Specifically, mechanical equipment generally has host computer control, and the host computer can feedback the equipment state, and in this case, adopts detection sensor 8 to monitor the rocking arm 62 state, and this detection sensor 8 can be proximity switch, and when rocking arm 62 appeared the spacing operation of pivot displacement, rocking arm 62 and proximity switch phase separation, proximity switch released the communication signal to the host computer to remind the monitoring personnel equipment belt trouble.
When the belt is replaced, the replacement of the transmission belt can be realized without additionally carrying out the limiting of the ball screw and the supporting of the saddle of the main shaft, and the locking mechanism 6 is reset due to the tightening after the replacement of the belt.
As shown in fig. 2, the locking plate 5 is provided with a plurality of locking tooth sections 9 uniformly spaced in the circumferential direction, and the locking end 63 is provided with a matching locking tooth for matching the locking tooth sections 9.
The blocking effect is realized by the matching of the locking tooth section 9 and the matching locking tooth.
In a preferred embodiment, as shown in fig. 2, the locking tooth segments 9 include a first limit tooth 91, a second limit tooth 92 and a third limit tooth 93 which are circumferentially and continuously arranged and have gradually increased radial protrusion sizes, a transition guide curved wall 94 is arranged between any adjacent locking tooth segments 9, one end of the transition guide curved wall is connected with the first limit tooth 91, and the other end of the transition guide curved wall and the third limit tooth form a locking groove 95. The tooth surfaces of the first limiting tooth, the second limiting tooth and the third limiting tooth are arc surfaces.
The locking end 63 is provided with a limiting groove corresponding to and matched with the first limiting tooth 91, the second limiting tooth 92 and the third limiting tooth 93 one by one, and a locking tooth part matched with the locking groove 95.
Specifically, the ball screw 12 has two displacements of normal rotation and reverse rotation, and therefore the above-described design is adopted.
Stop to stopping along spacing tooth gradual direction rotation under the condition:
during the process of abutting the locking disk 5, the locking end 63 contacts the transition guide curved wall 94, faces the locking tooth section 9, and is misaligned relative to the locking tooth section 9. Directly aligning and locking; when the transition guide curved wall 94 is contacted, under the displacement state along the transition guide curved wall 94, the pressing force is gradually increased, and when the maximum diameter of the transition guide curved wall 94 is exceeded, the locking end 63 is embedded into the locking tooth section 9, so that tight fit is realized; when the dislocation phase comparison occurs, the locking is directly performed in a state that the torsion is small, and when the torsion exceeds the dislocation locking force, the dislocation enters the transition guide curved wall 94, and finally the alignment locking is performed.
Stop to stopping along stopping under the rotation condition of spacing tooth direction of diminishing:
during the process of the locking end 63 abutting the locking disk 5, the locking tooth sections 9 are positively aligned, the opposite locking tooth sections 9 are misaligned, and the transition guide curved wall 94 is released. Directly facing and locking; when the contact transition guide curved wall 94 occurs, the locking end 63 and the locking tooth section 9 are in staggered matching under the inertia state of the ball screw 12, and along with the interaction of the matching of the torque force and the teeth, the torque force resistance is eliminated by the matching force of the teeth, and the same is true when the phase is staggered relative to the locking tooth section 9. When the torque force is larger to trigger the maximum matching state, the locking groove 95 and the locking end 63 realize rigid stopping, and the ball screw 12 can be ensured to realize stopping.
Therefore, the preferred embodiment has multi-stage stopping, meets the function of certain transitional stopping, reduces the stopping probability of hard collision and improves the safety of the stopping device.
In the scheme, the locking disc 5 is detachably connected with the driven fluted disc 3. The axial lock plunger that distributes through the axial promptly directly with locking dish 5 fix on driven fluted disc 3 can, when locking dish 5 certain damage appear directly replace can. The locking disc 5 is a stamping part and has higher structural strength and lower manufacturing cost.
Through the description, the gravity shaft anti-falling device applied to the transformation of mechanical equipment can stop the screw rod in the states of looseness, tooth breakage and fracture of the transmission belt, effectively prevents the falling events of the saddle and the main shaft, and improves the safety of the equipment. The transformation of old equipment is easy to realize, and the device has the characteristics of low space requirement, convenient and efficient carrying, low cost and the like. The overall design is based on traditional lead screw drive mechanism, and the pertinence is stronger, and the structure is succinct easily to be arranged, still satisfies the equipment routine maintenance demand when playing safety protection.
While the technical solutions of the present invention have been fully described above, it should be noted that the embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (7)
1. Be applied to gravity axle anti-falling device that mechanical equipment transformed, mechanical equipment is including the lead screw drive mechanism who is used for driving main shaft lift displacement, lead screw drive mechanism includes mounting substrate, ball screw and servo motor, be equipped with driving fluted disc on servo motor's the rotation axis, be equipped with driven fluted disc on the ball screw, driving fluted disc with be equipped with driving belt, its characterized in that between the driven fluted disc:
the gravity shaft anti-falling device comprises a locking disc arranged on the driven fluted disc and a locking mechanism which is used for matching with the locking disc to rotate and lock the ball screw, the locking mechanism is arranged on the mounting substrate, the locking mechanism comprises a monitoring part for monitoring the tension degree of the transmission belt,
the locking mechanism comprises a torsion seat arranged on the mounting substrate and a rocker arm matched and connected on the torsion seat,
the free end of the rocker arm is provided with a locking end matched with the locking disc, the arm body of the rocker arm is provided with a monitoring part which is abutted against the transmission belt, the monitoring part is a roller part,
and under the tensioning state of the transmission belt, a gap is reserved between the locking end and the locking disc.
2. The gravity shaft anti-falling device applied to mechanical equipment transformation according to claim 1, characterized in that:
the mounting substrate is provided with a detection sensor for monitoring the displacement of the rocker arm, and the detection sensor is in communication connection with a host of mechanical equipment.
3. The gravity shaft anti-falling device applied to mechanical equipment transformation according to claim 1, characterized in that:
the locking disc is provided with a plurality of locking tooth sections which are uniformly spaced in the circumferential direction, and the locking end is provided with matched locking teeth which are used for matching the locking tooth sections.
4. The gravity shaft anti-falling device applied to mechanical equipment transformation of claim 3, wherein:
the lock tooth section comprises a first limit tooth, a second limit tooth and a third limit tooth which are circumferentially and continuously arranged and have gradually increased radial protruding sizes, a transition guide curved wall is arranged between the lock tooth sections, one end of the transition guide curved wall is connected with the first limit tooth, and the other end of the transition guide curved wall is connected with the third limit tooth to form a locking groove.
5. The gravity shaft anti-falling device applied to mechanical equipment transformation of claim 4, wherein:
the tooth surfaces of the first limiting tooth, the second limiting tooth and the third limiting tooth are arc surfaces.
6. The gravity shaft anti-falling device applied to mechanical equipment transformation of claim 1, wherein:
the locking disc and the driven fluted disc are detachably connected.
7. The gravity shaft anti-falling device applied to mechanical equipment transformation of claim 6, wherein:
the locking disc is a stamping part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373391.7A CN111520449B (en) | 2020-05-06 | 2020-05-06 | Gravity shaft anti-falling device applied to mechanical equipment transformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373391.7A CN111520449B (en) | 2020-05-06 | 2020-05-06 | Gravity shaft anti-falling device applied to mechanical equipment transformation |
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| Publication Number | Publication Date |
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| CN111520449A CN111520449A (en) | 2020-08-11 |
| CN111520449B true CN111520449B (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010373391.7A Active CN111520449B (en) | 2020-05-06 | 2020-05-06 | Gravity shaft anti-falling device applied to mechanical equipment transformation |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2635991Y (en) * | 2003-06-25 | 2004-08-25 | 姜涛 | Rocking arm type automatic tension device for belt |
| CN101121484A (en) * | 2006-08-11 | 2008-02-13 | 王秋楠 | Elevator balancing escaping device |
| CN201151064Y (en) * | 2008-05-20 | 2008-11-19 | 上海大学 | Self locking mechanism for preventing Z-shaft of vertical numerically controlled machine form self-falling |
| CN101780622B (en) * | 2010-01-22 | 2014-03-26 | 无锡洲翔重工科技有限公司 | Ball screw jacking type automatic anti-flee wheel shelf |
| CN204830345U (en) * | 2015-06-24 | 2015-12-02 | 宝山钢铁股份有限公司 | Circulative cooling fan is not hard up detection device of belt for system |
| CN105114622A (en) * | 2015-09-15 | 2015-12-02 | 重庆长安汽车股份有限公司 | Parking locking mechanism for automatic transmissions |
| FR3042569B1 (en) * | 2015-10-20 | 2017-12-08 | Pubert Henri Sas | GEARBOX FOR MOTORCYCLE EQUIPMENT AND MOTORCYCLE EQUIPMENT COMPRISING SUCH A GEARBOX. |
| CN107285247B (en) * | 2017-08-23 | 2019-08-27 | 上海联影医疗科技有限公司 | Lifting device and C arm machine |
| CN108443290B (en) * | 2018-05-02 | 2019-08-27 | 北京卫星环境工程研究所 | Spacecraft thermal test tooling fall arrest bolt assembly |
| CN109057452B (en) * | 2018-09-10 | 2024-05-28 | 刘国辉 | Novel lifting and horizontal moving type stereo garage |
| CN110901479B (en) * | 2019-11-27 | 2022-03-25 | 诺创汽车科技(上海)有限公司 | Lockable rotary driving mechanism, electric rotary seat and automobile |
| CN110974619B (en) * | 2019-12-13 | 2021-09-28 | 曹杨 | Anti-falling sitting and standing dual-purpose leg traction rehabilitation device for orthopedic treatment |
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2020
- 2020-05-06 CN CN202010373391.7A patent/CN111520449B/en active Active
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