CN202729700U - Power-driven lifting platform with lead screw torsion resistance protection function - Google Patents
Power-driven lifting platform with lead screw torsion resistance protection function Download PDFInfo
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- CN202729700U CN202729700U CN 201220314217 CN201220314217U CN202729700U CN 202729700 U CN202729700 U CN 202729700U CN 201220314217 CN201220314217 CN 201220314217 CN 201220314217 U CN201220314217 U CN 201220314217U CN 202729700 U CN202729700 U CN 202729700U
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- lead screw
- case
- screw mandrel
- yoke
- lifting platform
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Abstract
The utility model relates to a power-driven lifting platform with a lead screw torsion resistance protection function. The power-driven lifting platform comprises a base, an upper platform surface, scissor mechanisms, a lead screw transmission mechanism and a matched electronic control system; the lead screw transmission mechanism is arranged between the two groups of scissor mechanisms and comprises a motor, a transmission gear, a middle box, a pulling box, a lead screw, a traveling guide rod and a braking hydraulic cylinder; the power-driven lifting platform is characterized in that a rear rotatable seat which is capable of rotating is arranged on the middle box, the motor is connected with the transmission gear and is arranged on the rear rotatable seat, a front rotatable seat which is capable of rotating is arranged on the pulling box, and a nut seat is arranged on the front rotatable seat. As the rear rotatable seat is arranged on the middle box of the lead screw transmission mechanism and the front rotatable seat is arranged in the middle part of the pulling box, the non-axial force acting on the lead screw can be eliminated, and the torsion resistance protection is carried out on the lead screw transmission mechanism; and therefore, the lead screw transmission mechanism can be effectively protected when abnormal conditions occur in the manufacturing and using process of equipment.
Description
Technical field
The utility model relates to a kind of improvement of electric lifting platform, specifically a kind of electric lifting platform with the antitorque protection design of screw mandrel.
Background technology
In the car assembling travel line, often need to use jacking equipment, be used for lifting car body or slide plate carrier, realize that workpiece is in the switching of differing heights.Electric lifting platform (also have and be called electric scissor bay-lift, Cam-type electric bay-lift) is a kind of jacking equipment commonly used.But because electric lifting platform exists assembly error and manufacturing errors inevitably in Practical manufacturing, these errors can cause screw mandrel to be in existing the operating mode of non-axial force (power that departs from the screw mandrel central axial direction).In addition, because the lifting of bay-lift need to cooperate electric-control system, when debugging mode or employee's maloperation, also the bay-lift fallen accident may appear, and so also can be so that screw mandrel be subject to non-axial force.In case the system of detecting is in and falls state and in time lock the braking liquid cylinder pressure, because the braking liquid cylinder pressure is in screw mandrel one side, in case the braking liquid cylinder pressure is locked, raising middle flask and draw case can be in non-parallel state, screw mandrel is subject to non-axial applied force.In lead screw transmission mechanism in the past, because screw mandrel is completely fixed with respect to raising middle flask, in case when it was subject to non-axial force, screw mandrel will produce slight bending shape, under this operating mode, can greatly accelerate damage even the fracture of screw mandrel, thereby have influence on the service life of whole electric lifting platform.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art; lead screw transmission mechanism to existing electric lifting platform is carried out rational modification; thereby provide a kind of electric lifting platform with the antitorque protection design of screw mandrel; it can eliminate the suffered non-axial force of screw mandrel; carry out antitorque protection for lead screw transmission mechanism; so that equipment make, when abnormal condition appear in use procedure, lead screw transmission mechanism can be effectively protected, and greatly reduces the maintenance cost of electric lifting platform.
The technical scheme that provides according to the utility model: have the electric lifting platform of the antitorque protection design of screw mandrel, comprise base, upper table surface, scissors mechanism, lead screw transmission mechanism and supporting electric-control system; Scissors mechanism has two groups, and two groups of scissors mechanisms are symmetricly set on the electric lifting platform both sides; Every group of scissors mechanism all cut yoke outward and formed by cutting yoke and one in one, in cut yoke and cut yoke outward and utilize bearing pin to be hinged at the middle part; In cut the yoke lower end and base hinged, in cut yoke upper end and be supported on the upper table surface by support wheel, in cut yoke the hinged place with the upper part epirelief wheel plate is installed; Cut the yoke upper end outward hinged with upper table surface, cut the yoke lower end outward and be supported on the base by support wheel, the following position, hinged place of cutting yoke outward is installed with lower lobe plate; Described lead screw transmission mechanism is arranged between two groups of scissors mechanisms, lead screw transmission mechanism comprises motor, change speed gear box, raising middle flask, draws case, screw mandrel, stroke guide rod and braking liquid cylinder pressure, the raising middle flask two ends are connected with bearing pin in two groups of scissors mechanisms, motor is connected with change speed gear box and is installed on the raising middle flask, the coaxial screw mandrel that is connected with on the output shaft of change speed gear box; The described case that draws is arranged on raising middle flask the place ahead, draws case to parallel with raising middle flask, and described screw mandrel passes forward and draws case, is drawing case that the nut seat that consists of the screw thread transmission with screw mandrel is installed; The described case two ends of drawing are equipped with roller, this roller the interior epirelief wheel plate of cutting yoke and outside cut between the lower lobe plate of yoke; The both sides of described screw mandrel are provided with two stroke guide rods, and stroke guide rod one end is fixed on the raising middle flask, and the stroke guide rod passes and draws case and consist of bearing fit with drawing case; Described braking liquid cylinder pressure is installed on the raising middle flask, and the piston rod of braking liquid cylinder pressure is connected to forward and draws on the case; It is characterized in that: a rotating rear rotation seat is installed on the described raising middle flask, and described motor is connected with change speed gear box and is installed on the rear rotation seat; The described middle part of case of drawing is equipped with a rotating front rotation seat, and described nut seat is installed on the front rotation seat.
As further improvement of the utility model, on the described stroke guide rod balance spring that is compressive state is housed.
The utility model compared with prior art; advantage is: the utility model carries out rational modification to the lead screw transmission mechanism of existing electric lifting platform; by rotation seat after installing at the raising middle flask of lead screw transmission mechanism; rotation seat before install at the middle part of drawing case; thereby can eliminate the suffered non-axial force of screw mandrel; carry out antitorque protection for lead screw transmission mechanism; so that equipment is in manufacturing, when abnormal condition appear in use procedure; lead screw transmission mechanism can be effectively protected, and greatly reduces the maintenance cost of electric lifting platform.
Description of drawings
Fig. 1 is the structural front view of the utility model electric lifting platform.
Fig. 2 is that A-A among Fig. 1 is to cutaway view.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the lead screw transmission mechanism normal working schematic diagram in the electric lifting platform.
Fig. 5 is the view when bearing non-axial force of the lead screw transmission mechanism in the electric lifting platform.
Description of reference numerals: 1-base, 2-in cut yoke, 3-motor, 4-change speed gear box, 5-cut yoke, 6-upper table surface, 7-bearing pin, 8-epirelief wheel plate, 9-lower lobe plate, 10-braking liquid cylinder pressure, 11-raising middle flask, 12-stroke guide rod, 13-draw case, 14-balance spring, 15-screw mandrel, 16-nut seat, 17-front rotation seat, 18-roller, 19-rear rotation seat outward.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
Such as Fig. 1 ~ shown in Figure 3, electric lifting platform described in the utility model mainly is comprised of base 1, upper table surface 6, scissors mechanism, lead screw transmission mechanism and supporting electric-control system; Described scissors mechanism has two groups, and two groups of scissors mechanisms are symmetricly set on the electric lifting platform both sides; Every group of scissors mechanism all cut yoke 5 outward and formed by cutting yoke 2 and one in one, in cut yoke 2 and cut yoke 5 outward and utilize bearing pin 7 to be hinged at the middle part; In cut yoke 2 lower ends and base 1 hinged, in cut yoke 2 upper ends and be supported on the upper table surface 6 by support wheel, in cut yoke 2 the hinged place with the upper part epirelief wheel plate 8 is installed; Cut yoke 5 upper ends and upper table surface 6 outward hinged, cut yoke 5 lower ends outward and be supported on the base 1 by support wheel, the following position, hinged place of cutting yoke 5 outward is installed with lower lobe plate 9; Described lead screw transmission mechanism is arranged between two groups of scissors mechanisms, lead screw transmission mechanism mainly by motor 3, change speed gear box 4, raising middle flask 11, draw case 13, screw mandrel 15, stroke guide rod 12 and braking liquid cylinder pressure 10 to form, raising middle flask 11 two ends are connected with bearing pin 7 in two groups of scissors mechanisms, a rotating rear rotation seat 19 is installed on the described raising middle flask 11, described motor 3 is connected with change speed gear box 4 and is installed on the rear rotation seat 19, the coaxial screw mandrel 15 that is connected with on the output shaft of change speed gear box 4; The described case 13 that draws is arranged on raising middle flask 11 the place aheads, draw case 13 to parallel with raising middle flask 11, the described middle part of case 13 of drawing is equipped with a rotating front rotation seat 17, and the nut seat 16 that consists of the screw thread transmission with screw mandrel 15 is installed at front rotation seat 17, and described screw mandrel 15 passes forward nut seat 16.Described case 13 two ends of drawing are equipped with roller 18, this roller 18 the interior epirelief wheel plate 8 of cutting yoke 2 and outside cut between the lower lobe plate 9 of yoke 5; The both sides of described screw mandrel 15 are provided with two stroke guide rods 12, and stroke guide rod 12 1 ends are fixed on the raising middle flask 11, and stroke guide rod 12 passes and draws case 13 and consist of bearing fit with drawing case 13; Described braking liquid cylinder pressure 10 is installed on the raising middle flask 11, and the piston rod of braking liquid cylinder pressure 10 is connected to forward and draws on the case 13; Described braking liquid cylinder pressure 10 is installed on the raising middle flask 11, and the piston rod of braking liquid cylinder pressure 10 is connected to forward and draws on the case 13.
During specific works, motor 3 in the lead screw transmission mechanism drives screw mandrel 15 by change speed gear box 4 and rotates, screw mandrel 15 rotates the nut seat 16 that orders about on it along screw mandrel 15 axial motions, nut seat 16 drives and draws case 13 to be synchronized with the movement, draw epirelief wheel plate 8 and lower lobe plate 9 in the roller 18 compressing scissors mechanisms at case 13 two ends, so that the opening angle of scissors mechanism changes; Draw case 13 under screw mandrel 15 effect during near raising middle flask 11, bay-lift rises, and draws case 13 under the effect of screw mandrel 15 during away from raising middle flask 11, and bay-lift descends.
In above-mentioned working process, under the normal condition, raising middle flask in the lead screw transmission mechanism 11 and draw case 13 to parallel, screw mandrel 15 only is subjected to axial force (as shown in Figure 4).
But when there is error in the manufacturing assembling, screw mandrel 15 can be subject to non-axial force when operation, in system in the past, screw mandrel 15 is completely fixed with respect to raising middle flask 11, when in case it is subject to non-axial force, screw mandrel 15 will produce slight bending shape, can greatly accelerate damage even the fracture of screw mandrel 15 under this operating mode.In addition, bay-lift generally is furnished with dropproof checking system, when the bay-lift fallen accident occurring, braking liquid cylinder pressure 10 can be locked, because braking liquid cylinder pressure 10 is in screw mandrel 15 1 sides, in case braking liquid cylinder pressure 10 is locked, raising middle flask 11 and draw case 13 will be in non-parallel state (as shown in Figure 5), this moment, screw mandrel 15 was subject to non-axial applied force.
Because the screw mandrel 15 in the utility model is mounted on front rotation seat 17 and the rear rotation seat 19; under non-axial applied force; screw mandrel 15 can be followed front rotation seat 17 and 19 rotations of rear rotation seat; reach self adaptation; this moment, non-axial force was born by two stroke guide rods 12 fully, and screw mandrel 15 only is subjected to a pair of balancing force effect at front rotation seat 17 and rear rotation seat 19 places, was subject to axial pulling force namely merely; phenomenon of rupture can not appear, the antitorque protection design of Here it is screw mandrel 15.
In addition, the balance spring 14 that is compressive state is housed also on the described stroke guide rod 12, balance spring 14 keeps (shown in Fig. 1,3,4) by nut.The effect of balance spring 14 is: the one, and in the bay-lift uphill process, balance spring 14 helper motors 3 lifting weights; The 2nd, in bay-lift decline process, balance spring 14 saves as elastic potential energy to gravitional force, realizes reducing motor 3 power, improves the purpose of whole efficiency.Concrete course of action is as follows:
When bay-lift is in low level, draw case 13 to be in position away from raising middle flask 11, balance spring 14 is in compressive state.When bay-lift rises, draw case 13 under the lead screw transmission mechanism effect, to move toward raising middle flask 11, drive bay-lift and rise, this moment, balance spring 14 provided thrust for bay-lift.
When bay-lift is in a high position, draw case 13 to be in the position of close raising middle flask 11, balance spring 14 is in relaxation state.When bay-lift descends, draw case 13 to move away from raising middle flask 11 at the bay-lift Action of Gravity Field, this moment, braking force was provided jointly by motor 3 and balance spring 14.
Claims (2)
1. have the electric lifting platform of the antitorque protection design of screw mandrel, comprise base (1), upper table surface (6), scissors mechanism, lead screw transmission mechanism and supporting electric-control system; Scissors mechanism has two groups, and two groups of scissors mechanisms are symmetricly set on the electric lifting platform both sides; Every group of scissors mechanism all cut yoke (5) outward and formed by cutting yoke (2) and one in one, in cut yoke (2) and cut yoke (5) outward and utilize bearing pin (7) to be hinged at the middle part; In cut yoke (2) lower end and base (1) is hinged, in cut yoke (2) upper end and be supported on the upper table surface (6) by support wheel, in cut yoke (2) the hinged place with the upper part epirelief wheel plate (8) is installed; Cut yoke (5) upper end outward hinged with upper table surface (6), cut yoke (5) lower end outward and be supported on the base (1) by support wheel, the following position, hinged place of cutting yoke (5) outward is installed with lower lobe plate (9); Described lead screw transmission mechanism is arranged between two groups of scissors mechanisms, lead screw transmission mechanism comprises motor (3), change speed gear box (4), raising middle flask (11), draws case (13), screw mandrel (15), stroke guide rod (12) and braking liquid cylinder pressure (10), raising middle flask (11) two ends are connected with bearing pin (7) in two groups of scissors mechanisms, motor (3) is connected with change speed gear box (4) and is installed on the raising middle flask (11), the coaxial screw mandrel (15) that is connected with on the output shaft of change speed gear box (4); The described case (13) that draws is arranged on raising middle flask (11) the place ahead, draws case (13) to parallel with raising middle flask (11), and described screw mandrel (15) passes forward and draws case (13), is drawing case (13) that the nut seat (16) that consists of the screw thread transmission with screw mandrel (15) is installed; Described case (13) two ends of drawing are equipped with roller (18), and this roller (18) is positioned between the epirelief wheel plate (8) of cutting yoke (2) and the lower lobe plate (9) of the cutting yoke (5) outward; The both sides of described screw mandrel (15) are provided with two stroke guide rods (12), and stroke guide rod (12) one ends are fixed on the raising middle flask (11), and stroke guide rod (12) passes and draws case (13) and consist of bearing fit with drawing case (13); Described braking liquid cylinder pressure (10) is installed on the raising middle flask (11), and the piston rod of braking liquid cylinder pressure (10) is connected to forward and draws on the case (13); It is characterized in that: a rotating rear rotation seat (19) is installed on the described raising middle flask (11), and described motor (3) is connected with change speed gear box (4) and is installed on the rear rotation seat (19); The described middle part of case (13) of drawing is equipped with a rotating front rotation seat (17), and described nut seat (16) is installed on the front rotation seat (17).
2. the electric lifting platform with the antitorque protection design of screw mandrel as claimed in claim 1 is characterized in that: the balance spring (14) that is compressive state is housed on the described stroke guide rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314217 CN202729700U (en) | 2012-06-29 | 2012-06-29 | Power-driven lifting platform with lead screw torsion resistance protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314217 CN202729700U (en) | 2012-06-29 | 2012-06-29 | Power-driven lifting platform with lead screw torsion resistance protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202729700U true CN202729700U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220314217 Withdrawn - After Issue CN202729700U (en) | 2012-06-29 | 2012-06-29 | Power-driven lifting platform with lead screw torsion resistance protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202729700U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765677A (en) * | 2012-06-29 | 2012-11-07 | 江苏天奇物流系统工程股份有限公司 | Electric lifting table with spring balanced design |
| CN102774786A (en) * | 2012-06-29 | 2012-11-14 | 江苏天奇物流系统工程股份有限公司 | Electric lifting table with screw rod torsion-resistant protection design |
| CN103641025A (en) * | 2013-11-29 | 2014-03-19 | 浙江吉利控股集团有限公司 | Cross-arm type lifting device |
| CN103663257A (en) * | 2013-12-09 | 2014-03-26 | 苏州市职业大学 | Electric lifting platform |
-
2012
- 2012-06-29 CN CN 201220314217 patent/CN202729700U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765677A (en) * | 2012-06-29 | 2012-11-07 | 江苏天奇物流系统工程股份有限公司 | Electric lifting table with spring balanced design |
| CN102774786A (en) * | 2012-06-29 | 2012-11-14 | 江苏天奇物流系统工程股份有限公司 | Electric lifting table with screw rod torsion-resistant protection design |
| CN102765677B (en) * | 2012-06-29 | 2014-11-26 | 天奇自动化工程股份有限公司 | Electric lifting table with spring balanced design |
| CN103641025A (en) * | 2013-11-29 | 2014-03-19 | 浙江吉利控股集团有限公司 | Cross-arm type lifting device |
| CN103663257A (en) * | 2013-12-09 | 2014-03-26 | 苏州市职业大学 | Electric lifting platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIRACLE AUTOMATION ENGINEERING CO., LTD. Free format text: FORMER NAME: TIANQI MATERIAL FLOW SYSTEM ENGINEERING CO. LTD., JIANGSU |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 214187 Jiangsu Province, Wuxi city Huishan District Luoshe town Lotus Luo Road No. 288 Patentee after: Miracle Automation Engineering Co., Ltd. Address before: 214187 Jiangsu Province, Wuxi city Huishan District Luoshe town Lotus Luo Road No. 288 Patentee before: Tianqi Material Flow System Engineering Co., Ltd., Jiangsu |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130213 Effective date of abandoning: 20141126 |
|
| RGAV | Abandon patent right to avoid regrant |