CN117890991B - Optical detection system and method for lifting upright post resistance backing and electric table - Google Patents
Optical detection system and method for lifting upright post resistance backing and electric table Download PDFInfo
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- CN117890991B CN117890991B CN202410276900.2A CN202410276900A CN117890991B CN 117890991 B CN117890991 B CN 117890991B CN 202410276900 A CN202410276900 A CN 202410276900A CN 117890991 B CN117890991 B CN 117890991B
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Abstract
The invention relates to the technical field of resistance detection of lifting columns, in particular to an optical detection system and method for resistance rollback of lifting columns and an electric table, wherein the system comprises the following components: the support frame, the first transmission shaft, a fixed disc, a movable disc and a rotating sleeve which are sequentially sleeved on the first transmission shaft, wherein the fixed disc and the movable disc are provided with a first gear ring and a second gear ring which are meshed with each other, and the rotating sleeve and the movable disc are provided with a first friction surface and a second friction surface; the transmission disc is arranged on the first transmission shaft; the optical detection assembly comprises an induction disc, an optical sensor and a spring; the driving piece is used for driving the first transmission shaft to rotate; through the synergism of fixed disk, movable disk and rotation sleeve, can make the inductive disk rotate in the settlement angle to realize the comprehensive monitoring and the control to the lift process through optical sensor, when meetting resistance or barrier, can in time send the signal and make the system automatic back, avoid further exerting pressure or cause the damage, guarantee the safe operation of stand.
Description
Technical Field
The invention relates to the technical field of resistance detection of lifting columns, in particular to an optical detection system and method for resistance rollback of lifting columns and an electric table.
Background
The lift table is equipped with generally meeting and blocking the back function to detect and discern that the barrier exists, avoid elevating gear damage, it utilizes the travel detector to respond to the travel distance of measuring bar in the concrete implementation process, and with signal transmission to the controlgear and then control stand stop and back operation, because measuring bar and travel detector can only realize unilateral detection, in stand rise and decline in-process, need install the detection device who corresponds alone, and measuring bar detection area is limited, can only realize meeting near the area of mounted position and hinder the detection, lead to not in time getting rid of the barrier comprehensively, cause the damage of stand easily.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: an optical detection system and method for lifting stand columns to fall back when meeting resistance and an electric table are provided, and the problems in the background technology are effectively solved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: an optical detection system for lifting upright post blocking back, which is arranged inside a desk plate, comprising:
A support frame;
The first transmission shaft is arranged on the support frame, a fixed disc, a movable disc and a rotary sleeve are sequentially sleeved on the first transmission shaft, a first gear ring and a second gear ring which are meshed with each other are arranged on the opposite surface of the fixed disc and the movable disc, the meshing surfaces of the first gear ring and the second gear ring are obliquely arranged along the circumferential direction, and a first friction surface and a second friction surface are arranged on the opposite surface of the rotary sleeve and the movable disc;
The transmission disc is arranged on the first transmission shaft and used for driving the movable disc to synchronously rotate with the first transmission shaft;
the optical detection assembly comprises an induction disc arranged on the rotating sleeve, and optical sensors and springs arranged on two sides of the induction disc, wherein the induction disc is provided with induction pieces matched with the optical sensors in the circumferential direction, and the induction pieces are positioned between a receiving end and a transmitting end of the optical sensors;
the driving piece is arranged at one end of the first transmission shaft and used for driving the first transmission shaft to rotate;
When the first transmission shaft drives the movable disc to rotate through the transmission disc, the second gear ring and the first gear ring are intermittently meshed, meanwhile, the movable disc axially slides back and forth, the rotating sleeve is driven to rotate through end face friction force generated by the fit of the first friction surface and the second friction surface, and the sensing piece of the sensing disc is driven to rotate to a set angle, so that the optical sensor starts to work; when the upright post is lifted and blocked, the first transmission shaft stops rotating, the sensing disc is under the action of the spring, so that the sensing piece rotates into the sensing area, and the optical sensor stops working.
Further, the support frame comprises two support arms for supporting two ends of the first transmission shaft, and limiting ring grooves are formed in the contact section positions of the first transmission shaft and the two support arms;
a connecting plate is arranged between the two supporting arms.
Further, the fixed disk is located one end of the first gear ring and extends outwards to form a positioning shaft, and the movable disk is arranged on the positioning shaft in a sliding mode.
Further, the transmission disc comprises a disc surface body and a plurality of poking sheets arranged along the circumferential direction of the disc surface body, and the poking sheets are obliquely arranged towards the movable disc;
a groove for embedding the poking plate is formed in the end face of the movable disc;
The first transmission shaft is characterized in that at least one limiting plane is arranged on the cylindrical surface of the first transmission shaft, abutting faces matched with the limiting planes are arranged on the disc surface body, locking nuts and gaskets are arranged on the first transmission shaft and located on two sides of the disc surface body, the gaskets are abutted to the step faces of the limiting planes, and the locking nuts are used for positioning and clamping the transmission disc.
Further, friction plates are arranged on the first friction surface and the second friction surface.
Further, a mounting frame is arranged on the outer side of the rotating sleeve, and the rotating sleeve is rotatably arranged in an inner hole of the mounting frame through a bearing;
a groove for accommodating the transmission disc is formed in the end face, facing the moving disc, of the rotating sleeve.
Further, a damping coupling is arranged at the joint of the driving piece and the first transmission shaft.
Further, a plurality of adjusting bolts are arranged on one side of the supporting frame, facing the fixed disc, and are used for adjusting the distance between the fixed disc and the rotating sleeve.
The invention also provides an optical detection method for the resistance backing of the lifting upright post, which is applied to the optical detection system for the resistance backing of the lifting upright post, and comprises the following steps:
The first transmission shaft does not start to rotate in the initial state, the second gear ring of the movable disc is in a meshed state with the first gear ring of the fixed disc, and the induction piece is positioned between the transmitting end and the receiving end of the optical sensor;
Starting a driving piece, driving a first transmission shaft to rotate, driving a transmission disc on the first transmission shaft to synchronously rotate, driving a movable disc to rotate, gradually separating a second gear ring from the first gear ring along with the increase of the rotation angle of the movable disc, moving the movable disc towards a rotating sleeve, enabling a first friction surface to contact with a second friction surface when meshing teeth of the second gear ring are completely separated from tooth grooves of the first gear ring, driving the rotating sleeve to start rotating by the movable disc, synchronously rotating an induction disc on the rotating sleeve, enabling an induction plate to rotate to a set angle by a spring, enabling the induction plate to leave an induction area of an optical sensor, enabling the optical sensor to start working, and enabling the movable disc to slide back and forth between a fixed disc and the rotating sleeve under the deformation action of the transmission disc along with the continuous rotation of the first transmission shaft, wherein the optical sensor is in a working state, and a stand column is in a normal lifting state;
When the upright post is lifted and blocked, the first transmission shaft stops rotating, the transmission disc and the movable disc stop rotating, at the moment, the deformation force of the transmission disc acts on the movable disc, so that the second gear ring of the movable disc is meshed with the first gear ring, the first friction surface is separated from the second friction surface, the induction piece is restored to the initial state, and the optical sensor stops working.
The invention also comprises an electric table, which comprises a table plate body;
the optical detection system is arranged in the table plate body and used for the lifting upright post to fall back when meeting resistance;
four upright posts arranged on the table plate body;
And the transmission assembly is arranged in the table plate body and connected with the first transmission shaft through a speed reducer and used for driving the four stand columns to realize lifting.
The beneficial effects of the invention are as follows: according to the invention, through the synergistic effect of the fixed disc, the movable disc and the rotating sleeve, the induction disc can rotate within a set angle, and through the cooperation of the optical sensor and the induction piece, the comprehensive monitoring and control of the lifting process of the upright post are realized, when the resistance or the obstacle is met, a signal can be sent out in time to enable the system to automatically retract, further pressure application or damage is avoided, and the safe operation of the upright post is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view of a first view angle structure of an optical detection system according to the present invention;
FIG. 2 is a schematic view of a second view angle structure of the optical detection system according to the present invention;
FIG. 3 is a top view of an optical detection system according to the present invention;
FIG. 4 is a cross-sectional view of an optical detection system according to the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a schematic diagram showing the positions of the sensing disc and the optical sensor in an initial state according to the present invention;
FIG. 7 is a schematic diagram of the position of the inductive disk and the optical sensor under intermittent driving of the rotating sleeve by the movable disk in the present invention;
FIG. 8 is a first perspective exploded view of the optical detection system of the present invention;
FIG. 9 is a partially exploded view of a second view of the optical detection system of the present invention;
FIG. 10 is a schematic diagram of a driving disk according to the present invention;
FIG. 11 is a schematic view of an electric table according to the present invention;
fig. 12 is a schematic diagram of connection between a first transmission shaft and a transmission assembly according to the present invention.
Reference numerals: 1. a support frame; 11. a support arm; 12. a connecting plate; 2. a first drive shaft; 21. a limit ring groove; 22. a limit plane; 3. a fixed plate; 31. a first ring gear; 32. positioning a shaft; 4. a moving tray; 41. a second ring gear; 42. a first friction surface; 5. rotating the sleeve; 51. a second friction surface; 52. a mounting frame; 53. a bearing; 6. a drive plate; 61. a disk surface body; 62. a pulling piece; 63. a lock nut; 64. a gasket; 7. an optical detection assembly; 71. an induction plate; 72. an optical sensor; 73. a spring; 8. a driving member; 9. damping shaft coupling; 10. an adjusting bolt; 100. a table body; 200. a column; 300. and a transmission assembly.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The optical detection system for lifting column 200 to fall back when meeting resistance as shown in fig. 1 to 10 is disposed inside the desk plate and comprises: the device comprises a support frame 1, a first transmission shaft 2, a transmission disc 6, an optical detection assembly 7 and a driving piece 8;
The first transmission shaft 2 is arranged on the support frame 1, a fixed disc 3, a movable disc 4 and a rotary sleeve 5 are sleeved on the first transmission shaft 2 in sequence, a first gear ring 31 and a second gear ring 41 which are meshed with each other are arranged on the opposite surface of the fixed disc 3 and the movable disc 4, the meshing surfaces of the first gear ring 31 and the second gear ring 41 are obliquely arranged along the circumferential direction, and a first friction surface 42 and a second friction surface 51 are arranged on the opposite surface of the rotary sleeve 5 and the movable disc 4;
The transmission disc 6 is arranged on the first transmission shaft 2 and is used for driving the movable disc 4 to rotate synchronously with the first transmission shaft 2;
The optical detection assembly 7 comprises a sensing disc 71 arranged on the rotary sleeve 5, and optical sensors 72 and springs 73 arranged on two sides of the sensing disc 71, wherein the sensing disc 71 is provided with sensing pieces matched with the optical sensors 72 in the circumferential direction, and the sensing pieces are positioned between a receiving end and a transmitting end of the optical sensors 72;
the driving piece 8 is arranged at one end of the first transmission shaft 2 and is used for driving the first transmission shaft 2 to rotate;
When the first transmission shaft 2 drives the moving disc 4 to rotate through the transmission disc 6, the second gear ring 41 and the first gear ring 31 are intermittently meshed, meanwhile, the moving disc 4 slides reciprocally in the axial direction, the rotating sleeve 5 is driven to rotate by the end surface friction force generated by the joint of the first friction surface 42 and the second friction surface 51, and the sensing piece of the sensing disc 71 is driven to rotate to a set angle, so that the optical sensor 72 starts to work; when the upright post 200 is lifted and blocked, the first transmission shaft 2 stops rotating, and the sensing disc 71 rotates into the sensing area under the action of the spring 73, so that the optical sensor 72 stops working.
The distance between the fixed disc 3 and the rotating sleeve 5 in the invention meets the driving requirement of the movable disc 4 on the rotating sleeve 5, the driving piece 8 preferably adopts a servo motor to control the forward and backward rotation of the first transmission shaft 2, the backward rotation can be carried out when the upright post is lifted and blocked, the inclined side wall of the tooth slot of the first gear ring 31 positioned on the fixed disc 3 has a guiding function, during the rotation process of the movable disc 4, the axial movement can be generated by continuously extruding the side wall of the tooth slot on the fixed disc 3, thereby realizing the contact of the first friction surface 42 and the second friction surface 51, the first friction surface 42 and the second friction surface 51 adopt a knurling process to ensure the surface friction resistance, the transmission disc 6 is provided with an outer ring on the movable disc 4 by fixing the inner ring on the first transmission shaft 2, the deformation can be generated when the movable disc 4 moves axially, so that the movable disc 4 of the outer ring contacts the rotating sleeve 5, the movable disk 4 is driven to rotate by the end surface friction force to drive the rotary sleeve 5, in the rotating process, as shown in fig. 7, along with the rotation of the sensing disk 71, the spring 73 is stretched until the rotary sleeve 5 drives the sensing disk 71 to rotate to a set angle, at the moment, the sensing piece leaves the sensing area, the optical sensor 72 starts to work, and along with the continued rotation of the first transmission shaft 2, the deformation of the transmission disk 6 is reacted on the movable disk 4 to make the second gear ring 41 and the first gear ring 31 enter the meshed state again, at the moment, the first friction surface 42 and the second friction surface 51 are separated briefly, at the moment, the sensing disk 71 rotates back by a certain angle under the tensile force of the spring 73, at the moment, the optical sensor 72 is still in the working state, at the moment, when the second gear ring 41 is separated from the first gear ring 31 again, the first friction surface 42 and the second friction surface 51 after the temporary separation are contacted again, and drives the rotating sleeve 5 to continue rotating to a set angle, and repeats the intermittent driving of the moving disc 4, so that the sensing disc 71 is always kept outside the sensing area; under the condition that the upright post 200 is lifted and blocked, the first transmission shaft 2 stops moving, at the moment, the transmission disc 6 loses the rotating force, the second gear ring 41 on the moving disc 4 is meshed with the first gear ring 31 on the fixed disc 3, no end face friction force exists between the first friction face 42 and the second friction face 51, as shown in fig. 6, the induction disc 71 is always positioned between the receiving end and the transmitting end of the optical sensor 72 under the action of the spring 73, and at the moment, the optical sensor 72 stops working.
According to the invention, through the synergistic effect of the fixed disc 3, the movable disc 4 and the rotary sleeve 5, the induction disc 71 can rotate within a set angle, and through the cooperation of the optical sensor 72 and the induction sheet, the comprehensive monitoring and control of the lifting process of the stand column 200 are realized, when resistance or an obstacle is encountered, a signal can be timely sent out to enable the system to automatically retract, further pressure application or damage is avoided, and the safe operation of the stand column 200 is ensured.
In the preferred scheme of the invention, the support frame 1 comprises two support arms 11 for supporting two ends of the first transmission shaft 2, and a limiting ring groove 21 is arranged at the contact section position of the first transmission shaft 2 and the two support arms 11; to ensure normal rotation of the first drive shaft 2 while restricting movement of the first drive shaft 2 in the axial direction, and a connection plate 12 is provided between the two support arms 11. The connecting plate 12 is arranged perpendicular to the two support arms 11 so as to form a jacking structure between the two support arms 11, thereby ensuring the stability of the support frame 1.
As shown in fig. 4 and 5, in the present invention, the fixed disk 3 is located at one end of the first gear ring 31 and extends outwards to form a positioning shaft 32, and the movable disk 4 is slidably disposed on the positioning shaft 32. By setting the positioning shaft 32, the movable disk 4 is positioned more accurately, the coaxiality of the movable disk 4 and the fixed disk 3 is ensured, and the meshing precision of the first gear ring 31 and the second gear ring 41 is ensured.
In the preferred embodiment of the present invention, as shown in fig. 8 to 10, the driving disk 6 includes a disk surface body 61, and a plurality of paddles 62 disposed along the circumferential direction of the disk surface body 61, and the paddles 62 are disposed obliquely toward the moving disk 4; along with the continuous rotation of the first transmission shaft 2, the reaction force generated by the inclined shifting plate 62 pushes the movable disc 4 to move towards the fixed disc 3, so that the second gear ring 41 and the first gear ring 31 enter the meshed state again, and in order to ensure the reliability of the transmission force of the transmission disc 6, a groove for embedding the shifting plate 62 is formed on the end surface of the movable disc 4;
Wherein, be equipped with at least one spacing plane 22 on the face of cylinder of first transmission shaft 2, be equipped with on the quotation body 61 with spacing plane 22 complex butt face, guarantee torque transmission's feasibility to be equipped with lock nut 63 and gasket 64 on the both sides that lie in quotation body 61 on first transmission shaft 2, gasket 64 butt is on the step face of spacing plane 22, lock nut 63 is used for carrying out the location with driving disk 6 and presss from both sides tightly. The axial line movement of the transmission disc 6 caused by the thrust of the movable disc 4 is avoided, and the reliability of the position of the transmission disc 6 is effectively ensured. In addition, in order to ensure the driving feasibility of the induction disk 71, a clamping shaft is arranged on the cylindrical surface of the rotating sleeve 5, which is in contact with the induction disk 71, and at least one side of the cross section of the clamping shaft is provided with a parting surface so as to ensure the synchronous rotation of the induction disk 71 and the rotating sleeve 5.
To further increase the frictional resistance to ensure that the rotational angle of the rotatable sleeve 5 meets the operational requirements of the optical sensor 72, it is preferable that friction plates be provided on both the first friction surface 42 and the second friction surface 51, as shown in fig. 4-5. The friction disc adopts the rubber material, in the part embedding friction surface, at the moving disc 4 gradually moves the in-process towards rotating sleeve 5, two friction discs can contact in advance, provide initial frictional force, make rotating sleeve 5 start rotating, because sensing disc 71 one side adopts spring 73 spacing, after rotating to the angle of movement, the drive force that two friction discs brought can be offset to the pulling force of spring 73, at this moment, moving disc 4 can continue to remove, extrude the part friction disc that protrudes in the friction surface, realize the contact when making first friction surface 42 and second friction surface 51, through the double-deck frictional force effect of friction disc and friction surface, with overcome spring 73's pulling force, thereby guarantee that sensing disc 71 can rotate smoothly to the settlement angle, optical detection's precision has been guaranteed.
In order to avoid the direct contact between the rotating sleeve 5 and the first transmission shaft 2, the rotating sleeve 5 is caused to have a rotation angle deviation phenomenon, and the sensing result of the optical sensor 72 is affected, therefore, as shown in fig. 8-9, a mounting frame 52 is arranged on the outer side of the rotating sleeve 5, and the rotating sleeve 5 is rotatably arranged in an inner hole of the mounting frame 52 through a bearing 53; and because the driving disk 6 drives the moving disk 4 from one end to make the second gear ring 41 mesh with the first gear ring 31, further make the moving disk 4 contact with the rotating sleeve 5 through the inclined meshing teeth, realize synchronous rotation of the rotating sleeve 5, preferably, a groove for accommodating the driving disk 6 is arranged on one end surface of the rotating sleeve 5 facing the moving disk 4, so that the space required for installing the moving disk 4 and the driving disk 6 can be reduced, the reciprocating sliding of the moving disk 4 is ensured to meet the driving requirement, and the transmission feasibility is improved.
In the invention, when the first transmission shaft 2 suddenly stops rotating, the transmission system may generate recoil force, and the damping coupling 9 is arranged at the joint of the driving piece 8 and the first transmission shaft 2 to absorb and buffer the recoil force, so that the impact on the motor and the transmission system is reduced.
In the preferred scheme, be equipped with a plurality of adjusting bolt 10 in support frame 1 towards the one side of fixed disk 3 for adjust the distance between fixed disk 3 and the rotation sleeve 5, so that the slip distance of movable disk 4 can satisfy the transmission demand, in order to guarantee transmission system's normal operating.
The invention also provides an optical detection method for the resistance backing of the lifting upright post 200, which applies the optical detection system for the resistance backing of the lifting upright post 200 and comprises the following steps:
in the initial state, the first transmission shaft 2 does not start to rotate, the second gear ring 41 of the movable disc 4 is in a meshed state with the first gear ring 31 of the fixed disc 3, and the sensing piece is positioned between the transmitting end and the receiving end of the optical sensor 72;
Starting the driving piece 8, driving the first transmission shaft 2 to rotate by the driving piece 8, synchronously rotating the transmission disc 6 positioned on the first transmission shaft 2, driving the movable disc 4 to rotate, gradually separating the second gear ring 41 from the first gear ring 31 along with the increase of the rotation angle of the movable disc 4, moving the movable disc 4 towards the rotating sleeve 5 at the moment, when the meshing teeth of the second gear ring 41 are completely separated from the tooth grooves of the first gear ring 31, contacting the first friction surface 42 with the second friction surface 51, driving the rotating sleeve 5 to start rotating by the movable disc 4, synchronously rotating the sensing disc 71 positioned on the rotating sleeve 5, enabling the sensing disc 73 to rotate to a set angle, enabling the sensing disc to leave the sensing area of the optical sensor 72 at the moment, enabling the optical sensor 72 to start working, enabling the movable disc 4 to slide reciprocally between the fixed disc 3 and the rotating sleeve 5 under the deformation action of the transmission disc 6 along with the continuous rotation of the first transmission shaft 2, enabling the upright post 200 to be in a working state and enabling the upright post 200 to be in a normal lifting state;
when the upright post 200 is lifted and blocked, the first transmission shaft 2 stops rotating, the transmission disc 6 and the movable disc 4 stop rotating, at the moment, the deformation force of the transmission disc 6 acts on the movable disc 4, so that the second gear ring 41 of the movable disc 4 is meshed with the first gear ring 31, the first friction surface 42 is separated from the second friction surface 51, at the moment, the sensing piece is in an initial state, and the optical sensor 72 stops working.
According to the invention, through the synergistic effect of the fixed disc 3, the movable disc 4 and the rotary sleeve 5, the induction disc 71 can rotate within a set angle, and through the cooperation of the optical sensor 72 and the induction sheet, the monitoring and control of the lifting process of the stand column 200 are realized, when resistance or an obstacle is encountered, a signal can be timely sent out to enable the system to automatically retract, further pressure application or damage is avoided, and the safe operation of the stand column 200 is ensured.
As shown in fig. 11-12, the present invention also includes a powered table comprising a table top body 100; and an optical detection system arranged in the table body 100 and used for the lifting upright post 200 to fall back when encountering resistance; and four upright posts 200 provided on the table body 100; and the transmission assembly 300 is arranged in the table plate body 100, and the transmission assembly 300 is connected with the first transmission shaft 2 through a speed reducer and is used for driving the four upright posts 200 to realize lifting.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An optical detection system for lifting upright post blocking back is arranged inside a desk plate, and is characterized by comprising:
A support frame;
The first transmission shaft is arranged on the support frame, a fixed disc, a movable disc and a rotary sleeve are sequentially sleeved on the first transmission shaft, a first gear ring and a second gear ring which are meshed with each other are arranged on the opposite surface of the fixed disc and the movable disc, the meshing surfaces of the first gear ring and the second gear ring are obliquely arranged along the circumferential direction, and a first friction surface and a second friction surface are arranged on the opposite surface of the rotary sleeve and the movable disc;
The transmission disc is arranged on the first transmission shaft and used for driving the movable disc to synchronously rotate with the first transmission shaft;
The optical detection assembly comprises an induction disc arranged on the rotating sleeve, and optical sensors and springs arranged on two sides of the induction disc, wherein the induction disc is provided with induction sheets matched with the optical sensors in the circumferential direction;
the driving piece is arranged at one end of the first transmission shaft and used for driving the first transmission shaft to rotate;
When the first transmission shaft drives the movable disc to rotate through the transmission disc, the second gear ring and the first gear ring are intermittently meshed, meanwhile, the movable disc axially slides back and forth, the rotating sleeve is driven to rotate through end face friction force generated by the fit of the first friction surface and the second friction surface, and the sensing piece of the sensing disc is driven to rotate to a set angle, so that the optical sensor starts to work; when the upright post is lifted and blocked, the first transmission shaft stops rotating, the sensing disc is under the action of the spring, so that the sensing piece rotates into the sensing area, and the optical sensor stops working.
2. The optical detection system for resistance backing of the lifting column according to claim 1, wherein the supporting frame comprises two supporting arms for supporting two ends of the first transmission shaft, and a limiting ring groove is arranged at the contact section position of the first transmission shaft and the two supporting arms;
a connecting plate is arranged between the two supporting arms.
3. The optical detection system for resistance backing of the lifting column according to claim 1, wherein the fixed disc is located at one end of the first gear ring, extends out of the positioning shaft, and the movable disc is slidably disposed on the positioning shaft.
4. The optical detection system for resistance backing of lifting column according to claim 1, wherein the transmission disc comprises a disc surface body and a plurality of poking sheets arranged along the circumferential direction of the disc surface body, and the poking sheets are obliquely arranged towards the movable disc;
a groove for embedding the poking plate is formed in the end face of the movable disc;
The first transmission shaft is characterized in that at least one limiting plane is arranged on the cylindrical surface of the first transmission shaft, abutting faces matched with the limiting planes are arranged on the disc surface body, locking nuts and gaskets are arranged on the first transmission shaft and located on two sides of the disc surface body, the gaskets are abutted to the step faces of the limiting planes, and the locking nuts are used for positioning and clamping the transmission disc.
5. The optical detection system for resistance backing of the lifting column according to claim 1, wherein friction plates are arranged on the first friction surface and the second friction surface.
6. The optical detection system for resistance backing of the lifting column according to claim 1, wherein a mounting frame is arranged on the outer side of the rotating sleeve, and the rotating sleeve is rotatably arranged in an inner hole of the mounting frame through a bearing;
a groove for accommodating the transmission disc is formed in the end face, facing the moving disc, of the rotating sleeve.
7. The optical detection system for resistance backing of the lifting column according to claim 1, wherein a damping coupling is arranged at the joint of the driving piece and the first transmission shaft.
8. The optical detection system for resistance backing of the lifting column according to claim 1, wherein a plurality of adjusting bolts are arranged on a side of the supporting frame facing the fixed disc, and are used for adjusting a distance between the fixed disc and the rotating sleeve.
9. An optical detection method for the resistance backing of a lifting column, which is applied to the optical detection system for the resistance backing of the lifting column according to any one of claims 1 to 8, and is characterized by comprising the following steps:
The first transmission shaft does not start to rotate in the initial state, the second gear ring of the movable disc is in a meshed state with the first gear ring of the fixed disc, and the induction piece is positioned between the transmitting end and the receiving end of the optical sensor;
Starting a driving piece, driving a first transmission shaft to rotate, driving a transmission disc on the first transmission shaft to synchronously rotate, driving a movable disc to rotate, gradually separating a second gear ring from the first gear ring along with the increase of the rotation angle of the movable disc, moving the movable disc towards a rotating sleeve, enabling a first friction surface to contact with a second friction surface when meshing teeth of the second gear ring are completely separated from tooth grooves of the first gear ring, driving the rotating sleeve to start rotating by the movable disc, synchronously rotating an induction disc on the rotating sleeve, enabling an induction plate to rotate to a set angle by a spring, enabling the induction plate to leave an induction area of an optical sensor, enabling the optical sensor to start working, and enabling the movable disc to slide back and forth between a fixed disc and the rotating sleeve under the deformation action of the transmission disc along with the continuous rotation of the first transmission shaft, wherein the optical sensor is in a working state, and a stand column is in a normal lifting state;
When the upright post is lifted and blocked, the first transmission shaft stops rotating, the transmission disc and the movable disc stop rotating, at the moment, the deformation force of the transmission disc acts on the movable disc, so that the second gear ring of the movable disc is meshed with the first gear ring, the first friction surface is separated from the second friction surface, the induction piece is restored to the initial state, and the optical sensor stops working.
10. An electric desk is characterized by comprising a desk plate body;
the optical detection system for resistance backspacing of the lifting upright post according to any one of claims 1 to 8 is arranged in the table plate body;
four upright posts arranged on the table plate body;
And the transmission assembly is arranged in the table plate body and connected with the first transmission shaft through a speed reducer and used for driving the four stand columns to realize lifting.
Priority Applications (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06121712A (en) * | 1992-01-20 | 1994-05-06 | Meikikou:Kk | Table elevation device |
| KR20130057707A (en) * | 2011-11-24 | 2013-06-03 | 주식회사 포스코플랜텍 | Apparatus for diagnosing of frame |
| WO2013086620A1 (en) * | 2011-12-16 | 2013-06-20 | Chg Hospital Beds Inc. | Patient support overload or obstruction detection |
| CN111908297A (en) * | 2020-08-12 | 2020-11-10 | 安徽理工大学 | Monitoring system of disc brake of elevator |
| CN116425071A (en) * | 2023-05-15 | 2023-07-14 | 王晓华 | Lifting mechanism brake and control method thereof |
| CN116636691A (en) * | 2023-04-28 | 2023-08-25 | 永艺家具股份有限公司 | Lifting upright post capable of backing back when meeting resistance |
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- 2024-03-12 CN CN202410276900.2A patent/CN117890991B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06121712A (en) * | 1992-01-20 | 1994-05-06 | Meikikou:Kk | Table elevation device |
| KR20130057707A (en) * | 2011-11-24 | 2013-06-03 | 주식회사 포스코플랜텍 | Apparatus for diagnosing of frame |
| WO2013086620A1 (en) * | 2011-12-16 | 2013-06-20 | Chg Hospital Beds Inc. | Patient support overload or obstruction detection |
| CN111908297A (en) * | 2020-08-12 | 2020-11-10 | 安徽理工大学 | Monitoring system of disc brake of elevator |
| CN116636691A (en) * | 2023-04-28 | 2023-08-25 | 永艺家具股份有限公司 | Lifting upright post capable of backing back when meeting resistance |
| CN116425071A (en) * | 2023-05-15 | 2023-07-14 | 王晓华 | Lifting mechanism brake and control method thereof |
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| CN117890991A (en) | 2024-04-16 |
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