CN112938817A - Full-automatic high-bearing multi-section synchronous lifting electric push rod - Google Patents
Full-automatic high-bearing multi-section synchronous lifting electric push rod Download PDFInfo
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- CN112938817A CN112938817A CN202110129022.8A CN202110129022A CN112938817A CN 112938817 A CN112938817 A CN 112938817A CN 202110129022 A CN202110129022 A CN 202110129022A CN 112938817 A CN112938817 A CN 112938817A
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- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
- B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- Life Sciences & Earth Sciences (AREA)
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- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention belongs to the field of automatic machinery, and discloses a full-automatic high-bearing multi-section synchronous lifting electric push rod, which comprises a motor and a first screw rod, wherein the motor is connected with the first screw rod through a first screw rod; the locking mechanism comprises a first screw rod, a second screw rod, a motor box, a locking part, a first sleeve, a second sleeve, a third sleeve, a fourth sleeve, a second screw rod and a third screw rod, wherein the first fixing plate is fixedly provided with the motor box; the upper surfaces of the driving rod and the motor box are connected through a plane thrust bearing. The electric push rod is characterized in that: the multiple sections can be synchronously lifted to realize stable lifting for overweight objects (generally more than 500 kg).
Description
Technical Field
The invention relates to the field of automatic machinery, in particular to a multi-section synchronous lifting electric push rod.
Background
CN201720658761.5 discloses synchronous lift electric putter of four sections strokes, including push rod urceolus and the motor of setting in the urceolus bottom, the motor is connected with initiative screw rod, threaded connection has the axle sleeve on the initiative screw rod, axle sleeve lower extreme swing joint has first screw rod seat, first screw rod seat with be equipped with first inner tube between the urceolus, the first hollow screw rod of axle sleeve upper end fixedly connected with, threaded connection has the hollow screw rod of second on the first hollow screw rod, the hollow screw rod of second passes through threaded connection top cap outer tube connection push rod top cap. The four-section push rod has four sections of extension strokes, is simple and compact in design, can achieve simultaneous lifting of the four sections of strokes, effectively reduces extension time when the push rod is applied, and improves operation efficiency.
In this case, it realizes four sections synchronous lifting through first hollow screw and second hollow screw, but this kind of scheme has the problem: under the condition of high bearing, the pressure is directly transmitted to the screw rod by the screw rod, the screw thread contact surface of the screw rod is larger and larger along with the fact that the first hollow screw rod is deeper and deeper into the second hollow screw rod, the screw thread contact surface of the screw rod is smaller and smaller along with the fact that the first hollow screw rod is withdrawn from the second hollow screw rod, but the bearing capacity is certain, so that the pressed threads at different positions are inconsistent, the larger the bearing capacity is, the higher the lifting limit is, the larger the pressed threads are, and the shorter the service life is easily caused. Particularly, in the process of stretching, the threads at different positions are stressed differently, so that the threads at different positions are damaged differently, and after a period of time, the relative stretching of the two threaded rods becomes blocked.
CN201921506117.1 discloses a linear electric push rod, which comprises a motor, a cylinder body and a front cover, back lid and push rod, the cylinder body both ends are located to protecgulum and back lid difference lid, be equipped with the mount pad in the cylinder body, the protecgulum, the back lid, cylinder body and mount pad cooperation form first cavity and second cavity, first cavity is equipped with two travel switch with push rod looks adaptation, install lead screw and screw nut in the push rod, the motor is installed in the second cavity, the output of motor and the tip fixed connection of lead screw, the annular has been seted up on the bottom lateral surface of push rod, be equipped with the spout in the protecgulum, it is equipped with the latch segment to slide in the spout, the latch segment includes locking portion and unblock portion, the terminal surface of locking portion is arc, locking portion and annular locking cooperation, set up the through-hole with the spout intercommunication on the protecgulum, unblock portion wear out the protecgulum outside and with through-hole sliding fit. The invention has the advantages of self-locking function, simple structure and high bearing capacity.
In the scheme, the locking part is positioned at the top of the screw rod, and the motor is directly connected with the screw rod, which directly results in that the bearing cannot be large, because if the bearing is too large, the pressure is directly transmitted to the motor, which results in that the service life of the motor is not long, in the traditional technology, worm gear transmission or belt transmission is generally adopted; it can be confirmed that the direct connection between the motor and the screw rod in the above-mentioned solution has a significantly shortened service life when subjected to axial pressure.
In CN201921506117.1, when the electric push rod is lifted to the highest position, the locking force of the locking part is large, otherwise the moment is too small, resulting in uncontrolled unlocking.
Therefore, the technology can find that the stretching, synchronous stretching and locking of the electric push rod under the condition of large bearing are very difficult.
The technical problem to be solved by the scheme is as follows: how to improve the bearing limit of the electric push rod.
Disclosure of Invention
The invention aims at a full-automatic high-bearing multi-section synchronous lifting electric push rod, which is characterized in that: the multiple sections can be synchronously lifted to realize stable lifting for overweight objects (generally more than 500 kg).
The essential technical points for realizing the characteristics comprise: 1. axial pressure of the screw rod is dispersed to the motor box through the plane thrust bearing, so that direct heavy pressure on the motor is avoided; 2. when the motor stops moving, the screw rod is locked by the locking part and the locking matching part, so that the screw rod is prevented from automatically descending, the scheme can realize large torque by arranging the locking part and the locking matching part on the driving rod at the bottom of the first screw rod, so that locking can be realized only by very small locking force, meanwhile, due to the existence of the plane thrust bearing, only a small part of the pressure of a heavy object can be transmitted to the driving rod, and the locking effect of the driving rod is better; 3. the reliability of multi-section synchronous lifting is ensured; the axial pressure in front of any two adjacent screw rods cannot be directly transmitted, and is transmitted through the first fixed block, the second fixed block and the third fixed block, so that the sleeving abrasion between the screw rods can be reduced under the condition of overweight bearing as much as possible; meanwhile, because the contact areas of the first fixed block, the second fixed block and the third fixed block with the first screw rod, the second screw rod and the third screw rod are fixed, the stress of the first fixed block, the second fixed block and the third fixed block is not changed no matter where the lifting position is, and under the condition that the weight is constant, the abrasion of the surface threads of the screw rods and the internal threads of the first fixed block, the second fixed block and the third fixed block can be reduced, and the service life is prolonged.
In order to achieve the purpose, the invention provides the following technical scheme: a full-automatic high-bearing multi-section synchronous lifting electric push rod comprises a motor and a first screw rod; the locking mechanism comprises a first screw rod, a second screw rod, a motor box, a locking part, a first sleeve, a second sleeve, a third sleeve, a fourth sleeve, a second screw rod and a third screw rod, wherein the first fixing plate is fixedly provided with the motor box; the driving rod is connected with the upper surface of the motor box through a plane thrust bearing;
the first sleeve, the second sleeve, the third sleeve and the fourth sleeve are sequentially sleeved from bottom to top, the first sleeve is fixedly connected with the first fixing plate, and the fourth sleeve is fixedly connected with the second fixing plate; the first screw rod is positioned in the first sleeve, the second screw rod is positioned in the second sleeve, and the third screw rod is positioned in the third sleeve;
a first fixing block is fixed at the bottom of the second sleeve; a second fixed block is fixed at the bottom of the third sleeve, and a third fixed block is fixed at the bottom of the fourth sleeve;
a first inner cavity is formed in the second screw rod; a second inner cavity is formed in the third screw rod; a first sliding block is fixed at the top of the first screw rod, and a second sliding block is fixed at the top of the second screw rod; a first sliding groove matched with the first sliding block is arranged in the first inner cavity; a second sliding chute matched with the second sliding block is arranged in the second inner cavity; the first sliding block and the first sliding groove can move along the axial direction of the first screw rod and are fixed along the radial direction of the first screw rod; the second sliding block and the second sliding groove can move along the axial direction of the second screw rod and are fixed along the radial direction of the second screw rod;
the first fixing block and the first screw rod, the second fixing block and the second screw rod, and the third fixing block and the third screw rod are respectively connected through thread matching;
the first fixing block and the second screw rod, and the second fixing block and the third screw rod are connected through bearings respectively.
In the above full-automatic high-bearing multi-section synchronous lifting electric push rod, the first inner cavity and the second inner cavity are respectively provided with a plurality of first chutes and second chutes.
In the full-automatic high-bearing multi-section synchronous lifting electric push rod, the motor box comprises an upper box body and a lower box body connected with the upper box body; the motor is arranged in the upper box body, and the plane thrust bearing is arranged on the upper surface of the upper box body.
In the above-mentioned full-automatic, high-bearing, multi-section synchronous lifting electric putter, the upper surface of the upper box body is provided with a plurality of reinforcing ribs radiating in the radial direction of the upper surface of the upper box body.
In the full-automatic high-bearing multi-section synchronous lifting electric push rod, a stator of the motor is connected with a driving rod through a bearing; and the rotor of the motor is fixedly connected with the driving rod.
In the fully automatic high-bearing multi-section synchronous lifting electric push rod, the driving rod penetrates through a stator of the motor and extends to a position close to the first fixing plate; the locking part is arranged at the bottom of the driving rod; the locking matching part is fixed on the first fixing plate.
In the full-automatic high-bearing multi-section synchronous lifting electric push rod, the locking part is a concave part; the locking matching part is an electromagnetic mechanism and a locking rod connected with the electromagnetic mechanism, and the tail end of the locking rod is matched with the concave part.
In the full-automatic high-bearing multi-section synchronous lifting electric push rod, the outer diameters of the first sleeve, the second sleeve, the third sleeve and the fourth sleeve are gradually reduced; the outer diameters of the first screw rod, the second screw rod and the third screw rod are gradually increased; the diameter of the first inner cavity is larger than the outer diameter of the first screw rod; the diameter of the second inner cavity is larger than the outer diameter of the second screw rod.
In the full-automatic high-bearing multi-section synchronous lifting electric push rod, the first slide block is locked at the top of the first screw rod through a bolt, and the second slide block is locked at the top of the second screw rod through a bolt.
In the above full-automatic high-bearing multi-section synchronous lifting electric push rod, the first fixing plate and the second fixing plate are respectively provided with a plurality of mounting holes.
Compared with the prior art, the invention has the beneficial effects that:
the electric push rod of the invention is characterized in that: the multiple sections can be synchronously lifted to realize stable lifting for overweight objects (generally more than 500 kg).
The essential technical points for realizing the characteristics comprise: 1. axial pressure of the screw rod is dispersed to the motor box through the plane thrust bearing, so that direct heavy pressure on the motor is avoided; 2. when the motor stops moving, the screw rod is locked by the locking part and the locking matching part, so that the screw rod is prevented from automatically descending, the scheme can realize large torque by arranging the locking part and the locking matching part on the driving rod at the bottom of the first screw rod, so that locking can be realized only by very small locking force, meanwhile, due to the existence of the plane thrust bearing, only a small part of the pressure of a heavy object can be transmitted to the driving rod, and the locking effect of the driving rod is better; 3. the reliability of multi-section synchronous lifting is ensured; the axial pressure in front of any two adjacent screw rods cannot be directly transmitted, and is transmitted through the first fixed block, the second fixed block and the third fixed block, so that the sleeving abrasion between the screw rods can be reduced under the condition of overweight bearing as much as possible; meanwhile, because the contact areas of the first fixed block, the second fixed block and the third fixed block with the first screw rod, the second screw rod and the third screw rod are fixed, the stress of the first fixed block, the second fixed block and the third fixed block is not changed no matter where the lifting position is, and under the condition that the weight is constant, the abrasion of the surface threads of the screw rods and the internal threads of the first fixed block, the second fixed block and the third fixed block can be reduced, and the service life is prolonged.
Through the three points, the quick and stable lifting of the overweight load can be realized, and the electric push rod has the advantages of reliable operation, low failure rate and long service life.
Drawings
FIG. 1 is a front view of embodiment 1 of the present invention;
FIG. 2 is a sectional view of embodiment 1 of the present invention;
fig. 3 is a perspective view of a motor and a motor case according to embodiment 1 of the present invention;
fig. 4 is a sectional view of a motor and a motor case according to embodiment 1 of the present invention;
FIG. 5 is a perspective view of a third lead screw according to embodiment 1 of the present invention;
FIG. 6 is a perspective view of a second lead screw according to embodiment 1 of the present invention;
fig. 7 is a perspective view of the drive lever of embodiment 1 of the present invention;
fig. 8 is a perspective view of a first slider according to embodiment 1 of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-8, a fully automatic, high-bearing, multi-section synchronous lifting electric putter comprises a motor 1, a first screw rod 2; the locking mechanism comprises a first fixing plate 3, a second fixing plate 4, a first sleeve 5, a second sleeve 6, a third sleeve 7, a fourth sleeve 8, a second lead screw 9 and a third lead screw 10, wherein a motor box 11 is fixed on the first fixing plate 3, the motor 1 is fixed in the motor box 11, a driving rod 12 is coaxially and fixedly connected to the bottom of the first lead screw 2, the driving rod 12 is in transmission connection with the motor 1, a locking part 13 is arranged on the driving rod 12, and a locking matching part 14 matched with the locking part 13 is arranged in the motor box 11; the driving rod 12 is connected with the upper surface of the motor box 11 through a plane thrust bearing 15;
the first sleeve 5, the second sleeve 6, the third sleeve 7 and the fourth sleeve 8 are sequentially sleeved from bottom to top, the first sleeve 5 is fixedly connected with the first fixing plate 3, and the fourth sleeve 8 is fixedly connected with the second fixing plate 4; the first screw rod 2 is positioned in the first sleeve 5, the second screw rod 9 is positioned in the second sleeve 6, and the third screw rod 10 is positioned in the third sleeve 7;
a first fixed block 16 is fixed at the bottom of the second sleeve 6; a second fixed block 17 is fixed at the bottom of the third sleeve 7, and a third fixed block 18 is fixed at the bottom of the fourth sleeve 8;
a first inner cavity 19 is arranged in the second screw rod 9; a second inner cavity 20 is arranged in the third screw rod 10; a first sliding block 21 is fixed at the top of the first screw rod 2, and a second sliding block 22 is fixed at the top of the second screw rod 9; a first sliding groove 23 matched with the first sliding block 21 is arranged in the first inner cavity 19; a second sliding groove 24 matched with the second sliding block 22 is arranged in the second inner cavity 20; the first sliding block 21 and the first sliding chute 23 can move along the axial direction of the first screw rod 2 and are fixed along the radial direction of the first screw rod 2; the second sliding block 22 and the second sliding groove 24 can move along the axial direction of the second screw rod 9 and are fixed along the radial direction of the second screw rod 9; the axial displacement and the radial fixation described herein take the first slide block 21 and the first sliding groove 23 as an example, the axial displacement means that the first slide block 21 can move along the first sliding groove 23 along the axial direction of the second screw rod 9, and the radial fixation means that if the first slide block 21 rotates, the second screw rod 9 must also rotate along with it, and in the radial direction, the two are not displaced from each other.
The first fixing block 16 and the first screw rod 2, the second fixing block 17 and the second screw rod 9, and the third fixing block 18 and the third screw rod 10 are respectively connected through thread matching; more generally, the middle parts of the first fixed block 16, the second fixed block 17 and the third fixed block 18 are respectively provided with internal threads matched with the external threads of the corresponding first screw rod 2, the second screw rod 9 and the third screw rod 10;
the first screw rod 2 is in threaded fit with the first fixed block 16, penetrates through the first fixed block 16, enters the first inner cavity 19, and is in sliding fit with the first inner cavity 19 of the second screw rod 9 along the axial direction of the first inner cavity 19 through the first sliding block 21;
the second screw 9 is in threaded fit with the second fixed block 17, penetrates through the second fixed block 17, enters the second inner cavity 20, and is in sliding fit with the second inner cavity 20 of the third screw 10 along the axial direction of the second inner cavity 20 through the second sliding block 22.
The first fixing block 16 and the second screw 9, and the second fixing block 17 and the third screw 10 are respectively connected by bearings, and the bearings may be plane thrust bearings, roller bearings, ball bearings, or the like.
The electric push rod of the embodiment is characterized in that: the multiple sections can be synchronously lifted to realize stable lifting for overweight objects (generally more than 500 kg).
The essential technical points for realizing the characteristics comprise: 1. the axial pressure of the screw rod is dispersed on the motor box 11 through the plane thrust bearing 15, so that the direct heavy pressure on the motor 1 is avoided; 2. when the motor 1 stops moving, the locking part 13 and the locking matching part 14 need to lock the screw rod, so that the screw rod is prevented from automatically moving downwards, the locking part 13 and the locking matching part 14 are arranged on the driving rod 12 at the bottom of the first screw rod 2, so that large torque can be realized, locking force can be very small, and meanwhile, due to the existence of the plane thrust bearing 15, only a small part of pressure of a heavy object can be transmitted to the driving rod 12, so that the locking effect of the driving rod 12 is better; 3. the reliability of multi-section synchronous lifting is ensured; the axial pressure in front of any two adjacent screw rods cannot be directly transmitted, and is transmitted through the first fixed block 16, the second fixed block 17 and the third fixed block 18, so that the sleeving abrasion between the screw rods can be reduced under the condition of overweight bearing as much as possible; meanwhile, because the contact areas of the first fixed block 16, the second fixed block 17 and the third fixed block 18 and the first screw rod 2, the second screw rod 9 and the third screw rod 10 are fixed, the stress is not changed no matter where the lifting position is, and under the condition that the weight is constant, the abrasion of the screw rod surface threads and the internal threads of the first fixed block 16, the second fixed block 17 and the third fixed block 18 can be reduced, and the service life is prolonged.
Through the three points, the quick and stable lifting of the overweight load can be realized, and the electric push rod has the advantages of reliable operation, low failure rate and long service life.
In the use process, the working process is as follows: the motor 1 rotates forwards to push the first screw rod 2 to rotate, and the first screw rod 2 pushes the first fixing block 16 to ascend; the first screw rod 2 enables the second screw rod 9 to synchronously rotate through the first sliding block 21, and the first fixed block 16 enables the second sleeve 6 to ascend;
due to the rotation of the second screw rod 9, the second fixed block 17 can ascend, and the second slide block 22 on the second screw rod 9 enables the third screw rod 10 to rotate; the rising of the second fixed block 17 can lead the third sleeve 7 to rise;
due to the rotation of the third screw 10, the third fixed block 18 is lifted and the fourth sleeve 8 is lifted.
In summary, when the motor 1 rotates forward, the second sleeve 6, the third sleeve 7, and the fourth sleeve 8 ascend synchronously.
Similarly, if the motor 1 rotates reversely, the second sleeve 6, the third sleeve 7 and the fourth sleeve 8 descend synchronously.
If the motor 1 is to stop rotating, a signal is sent to the locking matching part 14, and the locking matching part 14 extends the lock tongue or the lock rod to seek the matching locking with the locking part 13; the motor 1 rotates no more than one turn before stopping the rotation so that the latch or lock bar can be inserted into the locking portion 13.
In the present embodiment, a plurality of first sliding grooves 23 and second sliding grooves 24 are respectively disposed in the first inner cavity 19 and the second inner cavity 20. In practical application, six first sliding grooves 23 extending along the radial direction of the second screw rod 9 are uniformly distributed in the first inner cavity 19; six second sliding grooves 24 extending along the radial direction of the third screw rod 10 are uniformly distributed in the second inner cavity 20, the first sliding block 21 is matched with 6 first sliding grooves 23, and the second sliding block 22 is matched with 6 second sliding grooves 24; in other words, the outer periphery of the first slider 21 has 6 projections 25 corresponding to the first slide grooves 23; the outer periphery of the second slider 22 also has 6 projections 25.
In this embodiment, the motor case 11 includes an upper case 111 and a lower case 112 connected to the upper case 111; the motor 1 is disposed in the upper case 111, and the flat thrust bearing 15 is disposed on an upper surface of the upper case 111. The first fixing block 16, the second fixing block 17 and the third fixing block 18 of the present embodiment are similar in structure, and similar to the first fixing block 16, the first fixing block is composed of an upper fixing block and a lower fixing block which are connected with each other, the upper fixing block is connected with the second lead screw 9 through a bearing, and the lower fixing block is in threaded fit with the first lead screw 2.
In this embodiment, the upper surface of the upper box 111 is provided with a plurality of ribs 113 radiating in the radial direction of the upper surface of the upper box 111.
The upper box body 111 receives the pressure of a heavy object borne by the first screw rod 2 through a plane thrust bearing 15; only a small part of the pressure on the first spindle 2 is transmitted to the transmission rod, which significantly reduces the pressure on the electric motor 1, resulting in an increased life of the electric motor 1.
Preferably, the stator of the motor 1 is connected with the driving rod 12 through a bearing; the rotor of the motor 1 is fixedly connected with a driving rod 12, and the driving rod 12 extends to a position close to the first fixing plate 3 through the stator of the motor 1; the locking part 13 is arranged at the bottom of the driving rod 12; the lock engagement portion 14 is fixed to the first fixing plate 3.
As can be seen from the above description, the driving rod 12 is inserted through the stator, and the locking engagement portion 14 is provided at the bottom of the driving rod 12, so that the locking engagement portion 14 only needs to output a slight force to achieve locking, because the moment is very large.
In this embodiment, the locking portion 13 is a concave portion; the lock engagement portion 14 is an electromagnetic mechanism 141 and a lock lever 142 connected to the electromagnetic mechanism, and a tip of the lock lever engages with the recess. This electromagnetic mechanism can produce magnetic force and adsorb under the circular telegram circumstances, and the part withdrawal breaks away from the check lock lever from the locking, and under the circumstances of not circular telegram, the check lock lever resets, more specifically, electromagnetic mechanism includes a reset spring 143 and magnetic mechanism, and magnetic mechanism and check lock lever are connected, and magnetic mechanism circular telegram, the check lock lever withdrawal, the outage of magnetic mechanism, the check lock lever stretches out under the carbonization that resets.
Preferably, the outer diameters of the first sleeve 5, the second sleeve 6, the third sleeve 7 and the fourth sleeve 8 become smaller; the outer diameters of the first screw rod 2, the second screw rod 9 and the third screw rod 10 are gradually increased; the diameter of the first inner cavity 19 is larger than the outer diameter of the first screw rod 2; the diameter of the second inner cavity 20 is larger than the outer diameter of the second screw rod 9, the first sliding block 21 is locked at the top of the first screw rod 2 through a bolt, the second sliding block 22 is locked at the top of the second screw rod 9 through a bolt, and the first fixing plate 3 and the second fixing plate 4 are respectively provided with a plurality of mounting holes.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A full-automatic high-bearing multi-section synchronous lifting electric push rod comprises a motor and a first screw rod; the locking mechanism is characterized by further comprising a first fixing plate, a second fixing plate, a first sleeve, a second sleeve, a third sleeve, a fourth sleeve, a second screw rod and a third screw rod, wherein a motor box is fixed on the first fixing plate, the motor is fixed in the motor box, a driving rod is coaxially connected to the bottom of the first screw rod and is in transmission connection with the motor, a locking part is arranged on the driving rod, and a locking matching part matched with the locking part is arranged in the motor box; the driving rod is connected with the upper surface of the motor box through a plane thrust bearing;
the first sleeve, the second sleeve, the third sleeve and the fourth sleeve are sequentially sleeved from bottom to top, the first sleeve is fixedly connected with the first fixing plate, and the fourth sleeve is fixedly connected with the second fixing plate; the first screw rod is positioned in the first sleeve, the second screw rod is positioned in the second sleeve, and the third screw rod is positioned in the third sleeve;
a first fixing block is fixed at the bottom of the second sleeve; a second fixed block is fixed at the bottom of the third sleeve, and a third fixed block is fixed at the bottom of the fourth sleeve;
a first inner cavity is formed in the second screw rod; a second inner cavity is formed in the third screw rod; a first sliding block is fixed at the top of the first screw rod, and a second sliding block is fixed at the top of the second screw rod; a first sliding groove matched with the first sliding block is arranged in the first inner cavity; a second sliding chute matched with the second sliding block is arranged in the second inner cavity; the first sliding block and the first sliding groove can move along the axial direction of the first screw rod and are fixed along the radial direction of the first screw rod; the second sliding block and the second sliding groove can move along the axial direction of the second screw rod and are fixed along the radial direction of the second screw rod;
the first fixing block and the first screw rod, the second fixing block and the second screw rod, and the third fixing block and the third screw rod are respectively connected through thread matching;
the first fixing block and the second screw rod, and the second fixing block and the third screw rod are connected through bearings respectively.
2. The fully automatic, high load bearing, multi-linked synchronous lifting electric putter of claim 1 wherein a plurality of first and second chutes are disposed within the first and second cavities, respectively.
3. The full-automatic high-bearing multi-section synchronous lifting electric push rod as claimed in claim 1, wherein the motor box comprises an upper box body and a lower box body connected with the upper box body; the motor is arranged in the upper box body, and the plane thrust bearing is arranged on the upper surface of the upper box body.
4. The automatic high-load multi-section synchronous lifting electric putter as claimed in claim 3, wherein the upper surface of the upper case body is provided with a plurality of ribs radiating in a radial direction of the upper surface of the upper case body.
5. The full-automatic high-bearing multi-joint synchronous lifting electric push rod according to claim 3, wherein a stator and a driving rod of the motor are connected through a bearing; and the rotor of the motor is fixedly connected with the driving rod.
6. The fully automatic, high capacity, multi-joint synchronized lift electric putter of claim 5, wherein the driving rod extends through the stator of the motor to a position close to the first fixing plate; the locking part is arranged at the bottom of the driving rod; the locking matching part is fixed on the first fixing plate.
7. The fully automatic, high load bearing, multi-joint synchronous lifting electric putter of claim 6 wherein said locking portion is a recess; the locking matching part is an electromagnetic mechanism and a locking rod connected with the electromagnetic mechanism, and the tail end of the locking rod is matched with the concave part.
8. The full-automatic high-load-bearing multi-section synchronous lifting electric push rod as claimed in claim 1, wherein the outer diameters of the first sleeve, the second sleeve, the third sleeve and the fourth sleeve are gradually reduced; the outer diameters of the first screw rod, the second screw rod and the third screw rod are gradually increased; the diameter of the first inner cavity is larger than the outer diameter of the first screw rod; the diameter of the second inner cavity is larger than the outer diameter of the second screw rod.
9. The full-automatic high-bearing multi-section synchronous lifting electric push rod according to claim 1, wherein the first slide block is locked at the top of the first screw rod through a bolt, and the second slide block is locked at the top of the second screw rod through a bolt.
10. The automatic high-load multi-section synchronous lifting electric putter as claimed in any one of claims 1-9, wherein the first and second fixing plates are each provided with a plurality of mounting holes.
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| CN202110129022.8A CN112938817A (en) | 2021-01-29 | 2021-01-29 | Full-automatic high-bearing multi-section synchronous lifting electric push rod |
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| CN202110129022.8A CN112938817A (en) | 2021-01-29 | 2021-01-29 | Full-automatic high-bearing multi-section synchronous lifting electric push rod |
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Cited By (1)
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|---|---|---|---|---|
| CN113967899A (en) * | 2021-11-11 | 2022-01-25 | 崔鲁彬 | External screw lifting type section bar support |
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