CN204752118U - Light -tonnage electric fork -lift plays to rise device - Google Patents
Light -tonnage electric fork -lift plays to rise device Download PDFInfo
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- CN204752118U CN204752118U CN201520322416.5U CN201520322416U CN204752118U CN 204752118 U CN204752118 U CN 204752118U CN 201520322416 U CN201520322416 U CN 201520322416U CN 204752118 U CN204752118 U CN 204752118U
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- ball screw
- antifriction
- synchronous pulley
- goods shelf
- end cap
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Abstract
The utility model discloses a light -tonnage electric fork -lift plays to rise device, fork frame swing joint is on the outer mast, the vertical ball screw that is provided with in the outer mast, the ball screw lower extreme is connected with motor driver, be connected with the horizontal pull rod that rises to rise on last its nut of making linear motion of edge of ball screw, the symmetry is vertical on the outer mast is provided with two guide rails, horizontal both ends of playing to rise the pull rod respectively with two guide rail swing joint, the outer mast top is provided with two gyro wheels, install a lifting chain strip on every gyro wheel, lifting chain strip one end rises pull rod fixed connection with horizontal, the lifting chain strip other end and fork frame fixed connection, its advantage is whole and rises device operation process adoption machinery and motor drive mode to the adoption accords with the lubricating grease lubrication of edible rank test, does not have hydraulic oil, is applicable to type trade such as food, medicine, adopting the function of motor driver drive ball screw, can improving work efficiency greatly, improved simultaneously and rise the decline precision, stability can be good.
Description
Technical field
The utility model relates to a kind of electri forklift, especially relates to a kind of jack up unit of little tonnage electri forklift.
Background technology
Fork truck is industrial transportation vehicle, is usually used in the transport of storage object.Because electri forklift has the advantages such as zero-emission, noise be little, electri forklift progressively instead of traditional diesel fork lift truck, and is widely used in the industries such as food, medicine, tobacco.The hoisting system of existing electri forklift is made up of hydraulic part substantially, generally comprises Hydraulic Pump, oil cylinder, valve, fuel tank and oil line pipe etc.But existing hoisting system exists following problem: 1. owing to being connected by oil line pipe between element each in hydraulic part, complex structure, not in placely easily causes leakage of oil once assemble; And use easily aging for a long time due to Hydraulic Elements, make hoisting system there is larger leakage of oil risk, therefore there is severe compromise in the quality of hydraulic lifting system to food, medicine, tobacco etc.2., because hydraulic efficiency pressure system driving efficiency is low, such that electri forklift whole efficiency is low, reliability is low and stability is low.
Summary of the invention
Technical problem to be solved in the utility model is to provide that a kind of efficiency is high, good stability, can be used for the jack up unit of the high little tonnage electri forklift of the safety performance of food stage industry.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of jack up unit of little tonnage electri forklift, comprise outer mast and goods shelf, described goods shelf is movably connected on described outer mast, vertically ball screw is provided with in described outer mast, described ball screw lower end is connected with motor driver, along the screw of its moving linearly being connected with the pull bar that laterally hoists on described ball screw, on described outer mast, symmetry is vertically provided with two guide rails, hoist one end of pull bar of described transverse direction is flexibly connected with the guide rail wherein described in, the hoist other end of pull bar of described transverse direction is flexibly connected with the guide rail described in another root, described outer mast top is symmetrically arranged with two rollers, each described roller is provided with the chain that hoists, one end and the described transverse direction of the described chain that the hoists pull bar that hoists is fixedly connected with, the other end of the described chain that hoists is fixedly connected with described goods shelf.
Described motor driver comprises servomotor, small synchronous pulley and large synchronous pulley, described small synchronous pulley is arranged on the output shaft of described servomotor, described small synchronous pulley is connected with described large synchronous pulley by Timing Belt, and described large synchronous pulley is connected on described ball screw for driving described ball screw to rotate by key.Adopt servomotor as propulsion source, operate steadily, the dynamic response time of servomotor acceleration and deceleration is short, handling good; Use the type of drive of Timing Belt, relative to type of drive such as traditional chain, gears, have that control accuracy is high, noise is little, without the advantage of grease contamination, be applicable to the industries such as food, medicine, tobacco; Timing Belt in power system and ball screw etc. replace the dynamic mode of conventional cylinder, can increase work efficiency, and improve the control accuracy hoisting, decline simultaneously.
Described outer mast comprises entablatrance and cross sill, the top of described ball screw is connected on described entablatrance by the first rolling bearing assembly be made up of the first antifriction-bearing box and clutch shaft bearing end cap, the bottom of described cross sill is provided with the second rolling bearing assembly of the second antifriction-bearing box and the second roller bearing end cap composition, the top of described cross sill is provided with the 3rd roller bearing end cap, described the 3rd is provided with multiple contour bolt sleeve between roller bearing end cap and described cross sill, the 3rd described roller bearing end cap is screwed into described bolt sleeve by bolt and is fixed on described cross sill, described large synchronous pulley is the described the 3rd between roller bearing end cap and described cross sill, the 3rd antifriction-bearing box is provided with between described large synchronous pulley and the 3rd described roller bearing end cap, the upper surface of the second described antifriction-bearing box is close to the lower surface of described large synchronous pulley, the lower end of described ball screw is from top to bottom successively through the 3rd described roller bearing end cap, 3rd antifriction-bearing box, large synchronous pulley and the second antifriction-bearing box are fixed on described cross sill, the bottom of described ball screw is fixedly installed pad and described pad is adjacent to the inner ring of the second described antifriction-bearing box.
Because ball screw top is provided with the first antifriction-bearing box, clutch shaft bearing end cap is fixed on entablatrance, the outer ring of the first antifriction-bearing box is arranged in the axis hole of clutch shaft bearing end cap, and the axis hole degree of depth of clutch shaft bearing end cap is greater than the first antifriction-bearing box thickness, therefore clutch shaft bearing radial direction staff cultivation, axial direction can be freely movable, and guarantee that ball screw is not under pressure effect, the inner ring of the first antifriction-bearing box rotates together with ball screw; Ball screw is suffered to be passed on the inner ring of the second antifriction-bearing box to upper pulling force by pad, power is passed on large synchronous pulley by the second antifriction-bearing box, power is passed on the inner ring of the 3rd antifriction-bearing box by large synchronous pulley, power is passed on the 3rd roller bearing end cap by final 3rd antifriction-bearing box, makes entire system good stability.
Described outer mast also comprises two and to be supported between described entablatrance and described cross sill and the channel-section steel be arranged symmetrically with, described goods shelf comprises two pieces of goods shelf roller adapter plates longitudinally arranged, described goods shelf roller adapter plate is provided with the goods shelf roller matched with described channel-section steel, channel-section steel described in described goods shelf is embedded by described goods shelf roller is arranged on described outer mast, moves up and down after described goods shelf is stressed in described channel-section steel.Channel-section steel serves the effect of guiding simultaneously to goods shelf, goods shelf embeds channel-section steel by goods shelf roller and moves up and down.
Described transverse direction hoists on pull bar and is symmetrically arranged with two the first mount pads, one end of the chain that hoists described in every root is provided with the first threaded joints, the first described threaded joints inserts a corresponding first described mount pad and fixes with nut screwing clamping, the inside face of described goods shelf roller adapter plate is symmetrically arranged with two the second mount pads, the other end of the chain that hoists described in every root is provided with the second threaded joints, and the second described threaded joints inserts a corresponding second described mount pad and fixes with nut screwing clamping.The pulling force that the pulling force effect that the chain that hoists is subject to goods shelf makes its ball screw be subject to up, improves the phenomenon of most ball screw in use deformation in compression, thus guarantees the straightness accuracy in screw mandrel working process and stability.First threaded joints inserts corresponding first mount pad and fixes with nut screwing clamping, and the horizontal application force hoisted suffered by pull bar is evenly distributed on two the first mounting blocks.
Described channel-section steel outside face is vertically provided with the first lamp line cabling stringing, described cross sill has been horizontally disposed with the second lamp line cabling stringing.First lamp line cabling stringing is used for and the second lamp line cabling stringing is used for installing wire, prevents electric wire to be exposed to outside pell-mell and causes safety misadventure, and make whole jack up unit elegant in appearance.
Around the screw mandrel protective frame being provided with a half-packaging structure outside described ball screw, the upper end of described screw mandrel protective frame is fixed on described clutch shaft bearing end cap, and the lower end of described screw mandrel protective frame is fixed on the 3rd described roller bearing end cap.Screw mandrel protective frame, around the periphery arranging ball screw, serves the effect of protection to ball screw, and elegant in appearance.
The bottom of described cross sill is fixedly installed one for the oil-containing groove collecting ball screw, large synchronous pulley, the first antifriction-bearing box, the second antifriction-bearing box and the 3rd antifriction-bearing box rotate the grease produced.Can prevent the grease that mechanical element drips from directly revealing on the ground, ensure floor cleaning.
Compared with prior art, the utility model has the advantage of in whole jack up unit operation process and adopt motor driver to drive ball screw to rotate, thus the up-and-down movement together with the horizontal pull bar that hoists of the screw on drive ball screw, then pull the chain-driving goods shelf up-and-down movement that hoists.Motor driver is adopted to drive ball screw running to replace the dynamic mode of conventional cylinder, be combined the lubricating grease lubrication meeting food grade standard, not only meet the production requirement of the food service industrys such as wine brewing, the resistance of motion of workpiece can be reduced simultaneously, increase work efficiency and control accuracy.Due to ball screw, guide rail, roller and the workpiece such as chain itself that hoist low to operating environment requirements, motor driver is arranged on vehicle body and degree of protection is higher in addition, and therefore this device is applicable to hot and humid harsh environment of Denging.Screw drives the pull bar that laterally hoists to do straight-line motion along ball screw, and guide rail had both controlled laterally to hoist the sense of motion of pull bar, and also ensure laterally to hoist pull bar level all the time in motion process; Be connected with the pull bar two ends that laterally hoist respectively by two chains that hoist again, the horizontal application force hoisted suffered by pull bar be evenly distributed to the two ends of the pull bar that laterally hoists; Simultaneously by the pulling force that the chain that hoists makes ball screw be subject to up, solve the yielding problem of ball screw pressurized that Long travel is vertically placed, thus guarantee the straightness accuracy in ball screw working process and stability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model (one);
Fig. 2 is structural representation of the present utility model (two);
Fig. 3 is cutaway view of the present utility model;
Fig. 4 is the enlarged drawing at A place in Fig. 3;
Fig. 5 is goods shelf constructional drawing of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
Embodiment: as shown in the figure, a kind of jack up unit of little tonnage electri forklift, comprise outer mast 1 and goods shelf 2, goods shelf 2 is movably connected on outer mast 1, ball screw 3 is vertically provided with in outer mast 1, ball screw 3 lower end is connected with motor driver 4, along the screw 31 of its moving linearly being connected with the pull bar 5 that laterally hoists on ball screw 3, on outer mast 1, symmetry is vertically provided with two guide rails 6, laterally hoist one end of pull bar 5 is flexibly connected with a wherein guide rail 6, the other end of pull bar 5 of laterally hoisting is flexibly connected with another root guide rail 6, outer mast 1 top is symmetrically arranged with two rollers 7, each roller 7 is provided with the chain 8 that hoists, hoist one end of chain 8 is fixedly connected with the pull bar 5 that laterally hoists, the other end of chain 8 of hoisting is fixedly connected with goods shelf 2.
In this particular embodiment, motor driver 4 comprises servomotor 41, small synchronous pulley 42 and large synchronous pulley 43, small synchronous pulley 42 is arranged on the output shaft of servomotor 41, small synchronous pulley 42 is connected with large synchronous pulley 43 by Timing Belt 44, and large synchronous pulley 43 is connected on ball screw 3 for driving ball screw 3 to rotate by key.
In this particular embodiment, outer mast 1 comprises entablatrance 9 and cross sill 10, the top of ball screw 3 is connected on entablatrance 9 by the first rolling bearing assembly be made up of the first antifriction-bearing box 11 and clutch shaft bearing end cap 12, wherein clutch shaft bearing end cap 12 is fixedly connected on entablatrance 9 bottom, first antifriction-bearing box 11 is arranged on the top of ball screw 3 and stretches into clutch shaft bearing end cap 12, and the axis hole degree of depth of clutch shaft bearing end cap 12 is greater than the first antifriction-bearing box 11 thickness, the bottom of cross sill 10 is provided with the second rolling bearing assembly of the second antifriction-bearing box 13 and the second roller bearing end cap 14 composition, wherein the second roller bearing end cap 14 is fixed on the bottom of cross sill 10, the top of cross sill 10 is provided with the 3rd roller bearing end cap 15, multiple contour bolt sleeve 16 is provided with between 3rd roller bearing end cap 15 and cross sill 10, 3rd roller bearing end cap 15 is screwed into bolt sleeve 16 by bolt and is fixed on cross sill 10, large synchronous pulley 43 is between the 3rd roller bearing end cap 15 and cross sill 10, the 3rd antifriction-bearing box 17 is provided with between large synchronous pulley 43 and the 3rd roller bearing end cap 15, the upper surface of the second antifriction-bearing box 13 is close to the lower surface of large synchronous pulley 43, the lower end of ball screw 9 is from top to bottom successively through the 3rd roller bearing end cap 15, 3rd antifriction-bearing box 17, large synchronous pulley 43 and the second antifriction-bearing box 13 are fixed on cross sill 10, the bottom of ball screw 9 is fixedly installed pad 18 and pad 18 is adjacent to the inner ring of the second antifriction-bearing box 13.
In this particular embodiment, outer mast 1 also comprises two and to be supported between entablatrance 9 and cross sill 10 and the channel-section steel 19 be arranged symmetrically with, goods shelf 2 comprises two pieces of goods shelf roller adapter plates 21 longitudinally arranged, goods shelf roller adapter plate 21 is provided with the goods shelf roller 22 matched with channel-section steel 19, goods shelf 2 embeds channel-section steel 19 by goods shelf roller 22 and is arranged on outer mast 1, moves up and down after goods shelf 2 is stressed in channel-section steel 19.
In this particular embodiment, the pull bar 5 that laterally hoists comprises main tie 51, L-type connecting portion 52 and the first slide block 53, first slide block 53 is fixedly connected with main tie 51 by L-type connecting portion 52, first slide block 53 is flexibly connected with guide rail 6, guide rail 6 is fixed on channel-section steel 19, the screw 31 of ball screw 3 is fixedly installed the second slide block 54, main tie 51 is fixedly connected with screw 31 by the second slide block 54, main tie 51 two ends are symmetrically arranged with two the first mount pads 511, hoist one end of chain 8 of every root is provided with the first threaded joints 81, first threaded joints 81 inserts corresponding first mount pad 511 and fixes with nut screwing clamping, the inside face of goods shelf roller adapter plate 21 is symmetrically arranged with two the second mount pads 211, the hoist other end of chain 8 of every root is provided with the second threaded joints 82, second threaded joints 82 inserts corresponding second mount pad 211 and fixes with nut screwing clamping.
In this particular embodiment, channel-section steel 19 outside face is vertically provided with the first lamp line cabling stringing 191, cross sill 10 has been horizontally disposed with the second lamp line cabling stringing 101.
In this particular embodiment, around the screw mandrel protective frame 32 being provided with a half-packaging structure outside ball screw 3, the upper end of screw mandrel protective frame 32 is fixed on clutch shaft bearing end cap 12, and the lower end of screw mandrel protective frame 32 is fixed on the 3rd roller bearing end cap 15.
In this particular embodiment, the bottom of cross sill 10 is fixedly installed one is rotated the grease produced oil-containing groove 102 for collecting ball screw 3, large synchronous pulley 43, first antifriction-bearing box 11, second antifriction-bearing box 13 and the 3rd antifriction-bearing box 17.
Principle of work of the present utility model: adopt servomotor 41 as propulsion source, servomotor 41 drives small synchronous pulley 42 to rotate, small synchronous pulley 42 drives large synchronous pulley 43 to rotate by Timing Belt 44, thus ball screw 3 is rotated with large synchronous pulley 43, rotary motion is become straight-line motion by ball screw 3, laterally hoist pull bar 5 with screw 31 at ball screw 3 moving linearly, laterally hoist the two ends of pull bar 5 along guide rail 6 moving linearly, hoist one end of chain 8 is fixedly connected with the pull bar 5 that laterally hoists, the other end of chain 8 of hoisting is fixedly connected with goods shelf 2 through roller 7, hoisting and declining of control laterally to hoist pull bar 5 and goods shelf 2 is transferred by controlling servomotor 41 positive and negative.
Claims (8)
1. the jack up unit of one kind little tonnage electri forklift, comprise outer mast and goods shelf, described goods shelf is movably connected on described outer mast, it is characterized in that vertically being provided with ball screw in described outer mast, described ball screw lower end is connected with motor driver, along the screw of its moving linearly being connected with the pull bar that laterally hoists on described ball screw, on described outer mast, symmetry is vertically provided with two guide rails, hoist one end of pull bar of described transverse direction is flexibly connected with the guide rail wherein described in, the hoist other end of pull bar of described transverse direction is flexibly connected with the guide rail described in another root, described outer mast top is symmetrically arranged with two rollers, each described roller is provided with the chain that hoists, one end and the described transverse direction of the described chain that the hoists pull bar that hoists is fixedly connected with, the other end of the described chain that hoists is fixedly connected with described goods shelf.
2. the jack up unit of a kind of little tonnage electri forklift according to claim 1, it is characterized in that described motor driver comprises servomotor, small synchronous pulley and large synchronous pulley, described small synchronous pulley is arranged on the output shaft of described servomotor, described small synchronous pulley is connected with described large synchronous pulley by Timing Belt, and described large synchronous pulley is connected on described ball screw for driving described ball screw to rotate by key.
3. the jack up unit of a kind of little tonnage electri forklift according to claim 2, it is characterized in that described outer mast comprises entablatrance and cross sill, the top of described ball screw is connected on described entablatrance by the first rolling bearing assembly be made up of the first antifriction-bearing box and clutch shaft bearing end cap, the bottom of described cross sill is provided with the second rolling bearing assembly of the second antifriction-bearing box and the second roller bearing end cap composition, the top of described cross sill is provided with the 3rd roller bearing end cap, described the 3rd is provided with multiple contour bolt sleeve between roller bearing end cap and described cross sill, the 3rd described roller bearing end cap is screwed into described bolt sleeve by bolt and is fixed on described cross sill, described large synchronous pulley is the described the 3rd between roller bearing end cap and described cross sill, the 3rd antifriction-bearing box is provided with between described large synchronous pulley and the 3rd described roller bearing end cap, the upper surface of the second described antifriction-bearing box is close to the lower surface of described large synchronous pulley, the lower end of described ball screw is from top to bottom successively through the 3rd described roller bearing end cap, 3rd antifriction-bearing box, large synchronous pulley and the second antifriction-bearing box are fixed on described cross sill, the bottom of described ball screw is fixedly installed pad and described pad is adjacent to the inner ring of the second described antifriction-bearing box.
4. the jack up unit of a kind of little tonnage electri forklift according to claim 3, it is characterized in that described outer mast also comprises two and to be supported between described entablatrance and described cross sill and the channel-section steel be arranged symmetrically with, described goods shelf comprises two pieces of goods shelf roller adapter plates longitudinally arranged, described goods shelf roller adapter plate is provided with the goods shelf roller matched with described channel-section steel, channel-section steel described in described goods shelf is embedded by described goods shelf roller is arranged on described outer mast, move up and down in described channel-section steel after described goods shelf is stressed.
5. the jack up unit of a kind of little tonnage electri forklift according to claim 4, it is characterized in that described transverse direction hoists on pull bar and be symmetrically arranged with two the first mount pads, one end of the chain that hoists described in every root is provided with the first threaded joints, the first described threaded joints inserts a corresponding first described mount pad and fixes with nut screwing clamping, the inside face of described goods shelf roller adapter plate is symmetrically arranged with two the second mount pads, the other end of the chain that hoists described in every root is provided with the second threaded joints, the second described threaded joints inserts a corresponding second described mount pad and fixes with nut screwing clamping.
6. the jack up unit of a kind of little tonnage electri forklift according to claim 4, is characterized in that described channel-section steel outside face being vertically provided with the first lamp line cabling stringing, described cross sill has been horizontally disposed with the second lamp line cabling stringing.
7. the jack up unit of a kind of little tonnage electri forklift according to claim 3, it is characterized in that outside described ball screw around the screw mandrel protective frame being provided with a half-packaging structure, the upper end of described screw mandrel protective frame is fixed on described clutch shaft bearing end cap, and the lower end of described screw mandrel protective frame is fixed on the 3rd described roller bearing end cap.
8. the jack up unit of a kind of little tonnage electri forklift according to claim 3, is characterized in that the bottom of described cross sill is fixedly installed one for the oil-containing groove collecting ball screw, large synchronous pulley, the first antifriction-bearing box, the second antifriction-bearing box and the 3rd antifriction-bearing box rotate the grease produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520322416.5U CN204752118U (en) | 2015-05-18 | 2015-05-18 | Light -tonnage electric fork -lift plays to rise device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520322416.5U CN204752118U (en) | 2015-05-18 | 2015-05-18 | Light -tonnage electric fork -lift plays to rise device |
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| Publication Number | Publication Date |
|---|---|
| CN204752118U true CN204752118U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520322416.5U Active CN204752118U (en) | 2015-05-18 | 2015-05-18 | Light -tonnage electric fork -lift plays to rise device |
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| CN (1) | CN204752118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891392A (en) * | 2015-05-18 | 2015-09-09 | 宁波海迈克动力科技有限公司 | Small-tonnage electric forklift lifting device |
-
2015
- 2015-05-18 CN CN201520322416.5U patent/CN204752118U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891392A (en) * | 2015-05-18 | 2015-09-09 | 宁波海迈克动力科技有限公司 | Small-tonnage electric forklift lifting device |
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