CN107594882B - Lifting device of double-foot lifting table and lifting table comprising lifting device - Google Patents
Lifting device of double-foot lifting table and lifting table comprising lifting device Download PDFInfo
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- CN107594882B CN107594882B CN201710953420.5A CN201710953420A CN107594882B CN 107594882 B CN107594882 B CN 107594882B CN 201710953420 A CN201710953420 A CN 201710953420A CN 107594882 B CN107594882 B CN 107594882B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The invention discloses a lifting device of a double-foot lifting table and the lifting table comprising the lifting device, wherein the lifting device comprises two screw rods which are respectively connected with two table legs of the double-foot lifting table in a threaded manner, a first conical gear, a transmission shaft provided with external threads, a transmission connecting piece in threaded connection with the transmission shaft, a gas spring which is arranged in parallel with the transmission shaft and a driving mechanism for driving the gas spring to act; the end part of a piston rod of the gas spring is connected with the transmission connecting piece; two ends of the transmission shaft are respectively and coaxially connected with a second bevel gear; the second bevel gear is meshed with the first bevel gear on the same side; the lifting table comprises a lifting device, a table plate and a table plate supporting frame which is respectively connected with the table plate and the lifting device, wherein the table plate supporting frame comprises a left bracket and a right bracket which are in sliding connection. The invention solves the problems of lifting synchronism and adapting to the installation of desktops of different sizes without arranging circuits.
Description
Technical Field
The invention relates to the field of tables and accessories thereof, in particular to a lifting device of a double-foot lifting table and the lifting table with the lifting device.
Background
The lifting table in the prior art is various, such as a manual lifting table with manually adjusted height of the table top, and the lifting rod is tightly pressed by screwing the bolt after the height of the table top is set so as to position the table top, but the table top is difficult to be ensured to be horizontal due to vision observation in the adjusting process, the adjusting difficulty is increased, and more time is spent. In order to solve the problem, an automatic lifting table is developed, and the lifting synchronism problem exists through arranging gas springs in the two table legs and controlling the expansion and contraction of the gas springs to realize the lifting of the table top.
With the progress of technology and the high-speed development of automation technology, an electric lifting table is known. The electric lifting table is simple and convenient to control and operate, and lifting and braking are started and stopped through motor control. The existing electric lifting table is characterized in that lifting motors are arranged on each table leg independently and matched with a screw rod structure to achieve the purpose of lifting the table top, however, the performances of the motors are not completely consistent, the service lives of the motors are different, and the noise problem exists. If the lifting motor is out of operation or all lifting motors are out of operation, the horizontal and lifting synchronization of the table top cannot be ensured, and even the lifting table cannot be lifted effectively.
The invention patent with the application number of 201510819777.5 discloses an electric lifting table, which drives a screw rod to lift through the operation of a double-shaft stretching motor so as to ensure the consistent length change rate of each table leg and save the occupied space of a lifting mechanism. However, the problems that the noise is large, the lifting table is complex to assemble, the lifting table cannot adapt to the installation of table boards of different sizes, the motor dissipates heat and the like still exist, the electric energy is very dependent, the problem of heat dissipation of the double-shaft extension motor is considered when the storage battery is assembled, the installation space of the motor and the storage battery and a matched circuit system are increased, and a wireless signal receiver for controlling the motor to act are also increased, so that the electric lifting table is complex in structure, the cost is greatly increased, and the placement space of the motor becomes more miscellaneous and chapter-free. In addition, the heat dissipation problem is not solved, and the service life of the motor is greatly reduced.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a lifting device of a double-foot lifting table and the lifting table with the lifting device, which have simple and attractive structure, do not need to arrange a strong current circuit and a signal transmission system, aim to solve the problems of high synchronism and noise of lifting of a table top in the prior art, prolong the service life of the lifting table, simplify the assembly work of the lifting table, and adapt to the installation of table plates with different sizes so as to enlarge the application range of the lifting device.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the lifting device of the double-foot lifting table comprises two lifting screw rods which are respectively in threaded connection with two table legs of the double-foot lifting table, wherein the top of each screw rod is respectively provided with a first conical gear, and the lifting device further comprises a transmission shaft provided with external threads, a transmission connecting piece in threaded connection with the transmission shaft, a gas spring which is arranged in parallel with the transmission shaft and a driving mechanism for driving the gas spring to act; the end part of a piston rod of the gas spring is connected with the transmission connecting piece; two ends of the transmission shaft are respectively coaxially connected with a second bevel gear; each of the second bevel gears meshes with the first bevel gears on the same side.
The lifting device of the double-foot lifting table also comprises a guide rod which is arranged in parallel with the transmission shaft; the guide rod penetrates through the transmission connecting piece.
In the lifting device of the double-foot lifting table, the transmission shaft comprises a threaded rotating shaft, a first transmission rod and a second transmission rod which are all positioned on the same axis, the two ends of the threaded rotating shaft are respectively connected with the first transmission rod and the second transmission rod in a detachable mode in sequence, the transmission shaft is in threaded connection with the transmission connecting piece, and the second transmission rod is connected with a second bevel gear.
The lifting device of the double-foot lifting table also comprises a transmission bin; the inside of drive storehouse is provided with the cover and locates the hollow shaft of the interior hexagon of second transfer line, the hollow shaft with the coaxial integrated into one piece of second bevel gear, and the bearing install in drive storehouse.
The lifting device of the double-foot lifting table also comprises a table plate support frame and a shell connected with the table plate support frame; the table support comprises a left bracket and a right bracket, the left bracket comprises a left transverse frame rod and a left longitudinal frame rod, the right bracket comprises a right transverse frame rod and a right longitudinal frame rod, and the right longitudinal frame rod is sleeved on the left longitudinal frame rod; the desk plate support frame is fixedly connected with the transmission bin, and the threaded rotating shaft and the gas spring are arranged in the shell.
In the lifting device of the double-foot lifting table, the side surface of the right longitudinal rack rod is provided with a threaded hole which is convenient for a bolt to be screwed into to compress the left longitudinal rack rod.
In the lifting device of the double-foot lifting table, the driving mechanism is a pull switch for driving the gas spring to act, and the pull switch also comprises an adjusting handle connected with a pull wire.
In the lifting device of the double-foot lifting table, a sleeve for protection is arranged on the periphery of the screw rod, and the sleeve is sleeved on the table leg of the double-foot lifting table.
On the other hand, the invention also provides a lifting table, which comprises a table plate, table legs and a lifting device of the double-foot lifting table; the table plate is connected with the table plate supporting frame of the lifting device through bolts, and the screw rod is connected with the table leg through threads.
The beneficial effects are that:
the invention provides a lifting device of a double-foot lifting table, which well solves the problems of high synchronism and noise of lifting of a table top in the prior art, prolongs the service life of the lifting table, simplifies the assembly work of the lifting table, and can adapt to the installation of table plates with different sizes so as to enlarge the application range of the lifting device. The invention controls the action of the gas spring through the driving mechanism, thereby driving the transmission shaft with threads to rotate, and driving the screw rod to synchronously lift through the first conical gear meshed with the second conical gear, thereby solving the problems of lifting synchronism, high noise, motor maintenance and service life. The desk plate support frame is divided into two parts, the left support and the right support are in sliding connection, meanwhile, the transmission shaft is divided into three parts, namely a threaded rotating shaft, a first transmission rod and a second transmission rod, the threaded rotating shaft, the first transmission rod and the second transmission rod are detachably connected, the second transmission rod penetrates through the first transmission rod and the hollow shaft, and finally the transverse expansion of the lifting device is realized, so that the desk plate support frame is suitable for desk plates of different sizes to be installed to form a double-foot lifting desk, and the assembly is simple and easy.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a lifting device of a double-foot lifting table.
Fig. 2 is an enlarged schematic view of the area a in fig. 1.
Fig. 3 is a schematic connection diagram of a transmission shaft and a gas spring in the lifting device of the double-foot lifting table.
Fig. 4 is a schematic diagram showing connection between a gas spring and a pull switch in the lifting device of the double-foot lifting table.
Fig. 5 is a diagram showing the internal structure of a transmission cabin in the lifting device of the double-foot lifting table.
Fig. 6 is a schematic structural view of a table support in the lifting device of the double-foot lifting table provided by the invention.
Detailed Description
The invention provides a lifting device of a double-foot lifting table and the lifting table with the lifting device, which are used for making the purposes, technical schemes and effects of the invention clearer and more definite, and the invention is further described in detail below by referring to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "left", "right", "inner", "outer", "transverse", "longitudinal", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description of the present invention and simplification of description. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
Referring to fig. 1, 2, 3, 4 and 5, the present invention provides a lifting device for a double-foot lifting table, which comprises two lifting screw rods 5 respectively connected with two legs 1 of the double-foot lifting table in a threaded manner, wherein the top of each screw rod 5 is provided with a first bevel gear 51 respectively, a transmission shaft 45 provided with external threads, a transmission connecting piece 42 connected with the transmission shaft 45 in a threaded manner, a gas spring 44 arranged in parallel with the transmission shaft 45, and a driving mechanism 41 for driving the gas spring 44 to act; the end of a piston rod 441 of the gas spring 44 is connected with the transmission connecting piece 42; two ends of the transmission shaft 45 are coaxially connected with a second bevel gear 31 respectively; each second bevel gear 31 meshes with the same side first bevel gear 51.
As shown in fig. 2 and 3, the lifting device further comprises a guide rod 6 arranged parallel to the transmission shaft 45; the guide rod 6 is inserted through the transmission connecting piece 42. The gas spring 44 can reciprocate more stably and smoothly under the supporting and guiding actions of the guide rod 6, and the acting force of the transmission connecting piece 42 exerted by the piston rod 441 is reduced.
As shown in fig. 3 and 5, further, the transmission shaft 45 includes a threaded rotation shaft 451, a first transmission rod 452 and a second transmission rod 453 which are all located on the same axis, two ends of the threaded rotation shaft 451 are respectively detachably connected with the first transmission rod 452 and the second transmission rod 453 in sequence, and are in threaded connection with the transmission connecting piece 42, and the second transmission rod 453 is connected with a second bevel gear 31. When the gas spring 44 is extended, the screw spindle 451 is rotated by the driving connector 42, and the first and second driving rods 452 and 453 connected thereto are rotated, and the second bevel gear 31 connected to the second driving rod 453 is engaged with the first bevel gear 51 to drive the screw 5 to move up and down. Because both ends of the transmission shaft 45 are connected with the second bevel gears 31, the screw rods 5 arranged in the two table legs 1 can be driven to move up and down through the operation of the driving mechanism 41, so that the consistency of the length change rates of the table legs is realized.
As shown in fig. 3 and 5, the lifting device further comprises a transmission bin 3; the inside of the transmission bin 3 is provided with a hollow shaft 32 sleeved on the inner hexagon of the second transmission rod 453, the hollow shaft 32 and the second bevel gear 31 are coaxially and integrally formed, and a bearing is arranged in the transmission bin 3. Moreover, the screw thread rotating shaft 451, the first transmission rod 452, the second transmission rod 453 and the hollow shaft 32 are connected in a sleeving manner to establish a transmission mechanism, so that the purposes of rapid assembly and disassembly can be achieved, the logistics transportation of a large number of lifting tables is facilitated, the current development situation of the electronic commerce age is met, and the connection and transmission effects can be improved due to the design mode of the inner hexagon.
As shown in fig. 1, 3 and 6, the lifting device further comprises a table support 2 and a shell 43 connected with the table support 2; the desk plate support frame 2 comprises a left bracket and a right bracket, the left bracket comprises a left transverse frame rod 211 and a left longitudinal frame rod 212, the right bracket comprises a right transverse frame rod 221 and a right longitudinal frame rod 222, and the right longitudinal frame rod 222 is sleeved on the left longitudinal frame rod 212; the desk plate support frame 2 is fixedly connected with the transmission bin 3, and a threaded rotating shaft 451 and a gas spring 44 are arranged in the shell 43. The left column bar 212 can translate reciprocally relative to the right column bar 222 to adjust the length of the lift device to accommodate different length-sized table installations, enabling mass production.
Further, the side of the right side rail 222 is provided with a threaded hole (not shown) to facilitate the screwing of a bolt into the compression left side rail 212. The left column bar 212 is prevented from moving left and right by screwing in and tightening the bolt.
As shown in fig. 3, further, the driving mechanism 41 is a pull switch 441 for driving the gas spring 44 to act, and the pull switch 441 further includes an adjusting handle 412 connected to the pull wire. The adjusting handle 412 is fixedly arranged at the bottom of the tabletop, so that people can manually control the adjusting handle 412 to automatically adjust the tabletop height to meet the requirements. In addition, in the operation process, the reflection is rapid, the noise influence is avoided, the lifting is stable, and the tabletop can be ensured to be in a horizontal state.
As shown in fig. 1, a protective sleeve 7 is further provided on the outer periphery of the screw 5, and the sleeve 7 is fitted over the leg 1 of the double-leg lifting table. The sleeve 7 can protect the screw rod 5 from the external influence, and avoid the screw rod 5 from being unable to move smoothly or even being blocked and failing due to the fact that the scraps are doped in the screw rod.
On the other hand, the invention also provides a lifting table, the table plate and the table plate support frame 2 are fixedly connected through bolts, the pull switch 441 is fixed under the table plate, and the screw rod 5 of the lifting device and the table leg 1 are connected in a threaded mode. The lifting table is simple in structure and easy to manufacture, synchronous and stable lifting of the table top can be realized, dependence on electric energy is eliminated, a heavy motor and a matched circuit system and a signal transmission system are omitted, the problems of noise, maintenance and heat dissipation of the motor are avoided, and the requirements of people on the lifting table are met.
In summary, the invention provides a lifting device for a double-foot lifting table, which well solves the problems of synchronous lifting and noise of the table top in the prior art, prolongs the service life of the lifting table, simplifies the assembly work of the lifting table, and can adapt to the installation of table plates with different sizes so as to enlarge the application range of the lifting device. The invention controls the action of the gas spring through the driving mechanism, thereby driving the transmission shaft with threads to rotate, and driving the screw rod to synchronously lift through the first conical gear meshed with the second conical gear, thereby solving the problems of lifting synchronism, high noise, motor maintenance and service life. The desk plate support frame is divided into two parts, the left support and the right support are in sliding connection, meanwhile, the transmission shaft is divided into three parts, namely a threaded rotating shaft, a first transmission rod and a second transmission rod, the threaded rotating shaft, the first transmission rod and the second transmission rod are detachably connected, the second transmission rod penetrates through the first transmission rod and the hollow shaft, and finally the transverse expansion of the lifting device is realized, so that the desk plate support frame is suitable for desk plates of different sizes to be installed to form a double-foot lifting desk, and the assembly is simple and easy.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present invention and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the following claims.
Claims (6)
1. The lifting device of the double-foot lifting table comprises two lifting screw rods which are respectively connected with two table legs of the double-foot lifting table in a threaded manner, wherein the top of each screw rod is respectively provided with a first conical gear; the end part of a piston rod of the gas spring is connected with the transmission connecting piece; two ends of the transmission shaft are respectively coaxially connected with a second bevel gear; each second bevel gear is meshed with the first bevel gear on the same side, the transmission shaft comprises a threaded rotating shaft, a first transmission rod and a second transmission rod which are all positioned on the same axis, two ends of the threaded rotating shaft are respectively and detachably connected with the first transmission rod and the second transmission rod in sequence and are in threaded connection with the transmission connecting piece, the second transmission rod is connected with one second bevel gear, the driving mechanism is a pull switch used for driving a gas spring to act, the pull switch further comprises an adjusting handle connected with a pull wire, and the lifting device further comprises a guide rod arranged in parallel with the transmission shaft; the guide rod penetrates through the transmission connecting piece.
2. The elevating device of a two-legged elevating table according to claim 1, further comprising a driving bin; the inside of drive storehouse is provided with the cover and locates the hollow shaft of the interior hexagon of second transfer line, the hollow shaft with the coaxial integrated into one piece of second bevel gear, and the bearing install in drive storehouse.
3. The lifting device of the double-foot lifting table according to claim 2, further comprising a table support frame, a housing connected to the table support frame; the table support comprises a left bracket and a right bracket, the left bracket comprises a left transverse frame rod and a left longitudinal frame rod, the right bracket comprises a right transverse frame rod and a right longitudinal frame rod, and the right longitudinal frame rod is sleeved on the left longitudinal frame rod; the desk plate support frame is fixedly connected with the transmission bin, and the threaded rotating shaft and the gas spring are arranged in the shell.
4. A lifting device for a double-foot lifting table according to claim 3, wherein the side surface of the right longitudinal frame bar is provided with a threaded hole for facilitating the screwing of a bolt into the left longitudinal frame bar.
5. The lifting device of the double-foot lifting table according to claim 1, wherein a sleeve for protection is arranged on the periphery of the screw rod, and the sleeve is sleeved on the table leg of the double-foot lifting table.
6. A lifting table, comprising a table board and table legs, and further comprising a lifting device of the double-foot lifting table as claimed in claim 3 or 4; the table plate is connected with the table plate supporting frame of the lifting device through bolts, and the screw rod is connected with the table leg through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710953420.5A CN107594882B (en) | 2017-10-13 | 2017-10-13 | Lifting device of double-foot lifting table and lifting table comprising lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710953420.5A CN107594882B (en) | 2017-10-13 | 2017-10-13 | Lifting device of double-foot lifting table and lifting table comprising lifting device |
Publications (2)
| Publication Number | Publication Date |
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| CN107594882A CN107594882A (en) | 2018-01-19 |
| CN107594882B true CN107594882B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710953420.5A Active CN107594882B (en) | 2017-10-13 | 2017-10-13 | Lifting device of double-foot lifting table and lifting table comprising lifting device |
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| CN108209146B (en) * | 2018-02-26 | 2024-05-17 | 杭州德昌五金家具有限公司 | Upright folding transmission mechanism and electric lifting device |
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| CN108991727B (en) * | 2018-08-28 | 2023-11-28 | 乐歌人体工学科技股份有限公司 | Lifting device of lifting table |
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| CN111109845A (en) * | 2019-10-24 | 2020-05-08 | 浙江捷昌线性驱动科技股份有限公司 | Automatic upset telescopic table frame and desk |
| CN111870025B (en) * | 2020-09-07 | 2022-02-08 | 浙江工贸职业技术学院 | Manual lifting table |
| CN112790507A (en) * | 2020-11-30 | 2021-05-14 | 江苏捷尔特智能气动系统有限公司 | Support rod locking mechanism and lifting table |
| CN114009927A (en) * | 2021-11-02 | 2022-02-08 | 广州市百利文仪实业有限公司 | Liftable table |
| CN115153181A (en) * | 2022-08-12 | 2022-10-11 | 南通市久正人体工学股份有限公司 | Electric lifting table |
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Effective date of registration: 20201204 Address after: No. 10 (F7), Zone D, Sanshui center, Foshan City, Guangdong Province (address application) Applicant after: Guangdong Lijiang Kechuang Industrial Co.,Ltd. Address before: 528137 Guangdong province Foshan City Sanshui District Center Science and Technology Industrial Park D area 10 Applicant before: FOSHAN LEADCOM SEATING Co.,Ltd. |
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