CN201087105Y - Power suspension mechanism of electric tray transport cart - Google Patents
Power suspension mechanism of electric tray transport cart Download PDFInfo
- Publication number
- CN201087105Y CN201087105Y CNU2007201145554U CN200720114555U CN201087105Y CN 201087105 Y CN201087105 Y CN 201087105Y CN U2007201145554 U CNU2007201145554 U CN U2007201145554U CN 200720114555 U CN200720114555 U CN 200720114555U CN 201087105 Y CN201087105 Y CN 201087105Y
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- car body
- fixed
- pressurized spring
- pipe link
- pressurizing cylinder
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Abstract
The utility model discloses a power hanging mechanism of an electric pallet truck, which comprises a pressure increasing spring I (1), a connecting bar I (2), a connecting bar II (3), a pressure increasing oil cylinder (8) and a pressure increasing spring II (9); the pressure increasing spring I (1) is fixed between the top part of a truck body (4) and a connecting frame (5); one end of the connecting bar I (2) and one end of the connecting bar II (3) are fixed on the connecting frame (5), and the other ends are hinged on the truck body (4); the connecting frame (5) is fixed on a gear case (7); one end of the pressure increasing spring II (9) is arranged on the connecting frame (5), and the other end is connected with the pressure increasing oil cylinder (8); the pressure increasing oil cylinder (8) is connected to the top part of the truck body (4). The utility model is characterized in that when the pressure increasing spring is not installed at the position of a balance wheel, not only the utility model can ensure that no shaking phenomenon at the truck body during the driving process, namely, the truck body is always in a steady state, but also the utility model can generate sufficient power for the driving of the entire truck, and the adjusting difficulty of the pressure increasing spring is small.
Description
Technical field:
The utility model relates to a kind of electric pallet truck, specifically is a kind of electric pallet truck power hitch.
Background technology:
At present, common on the market is that the power hitch of the electric pallet truck driver element formed of driving wheel mainly adopts offset structure and spring pressure charged centre floating structure by electrical motor, gear case and drive wheel mainly.
The characteristics of offset structure are, the drive wheel of driver element is connected car body one side, and it realizes the stable of car body by the balance wheel that is connected the other side of car body, that is to say, does not allow car body land on one side balance wheel is supporting car body; Simultaneously, driver element utilizes the weight of vehicle body to increase drive wheel adhesive ability and friction force over the ground, thereby the driving vehicle body advances or retreats.The weak point of offset structure is, in the car body traveling process, because driver element is in a side of car body, and the weight of driver element is far longer than the weight of balance wheel, so body gravity is in a side of car body and not on the center line at car body, in other words, body gravity is partial to drive wheel one side, therefore car body unsettled phenomenon can occur in traveling process, particularly its jiggly situation can be more serious in the high-ball process, if when that is to say Uneven road, particularly when the Uneven road of balance wheel one side, the car body of balance wheel one side is because of in light weight, so have very big jolting so.
Different with the offset structure is, floating structure is a principle of having used four-bar linkage in the middle of the spring pressure charged, that is to say that the end with connecting rod is connected with car body, the other end of connecting rod is connected with driver element, thereby by the rotation of connecting rod drive wheel can be fluctuated; Meanwhile, also be connected with a pressurized spring between car body and the driver element, promptly adjust drive wheel friction force over the ground, travel thereby drive vehicle body by compression or release spring by the pressure of adjusting pressurized spring; In addition, for the balance vehicle body, adopt the electric pallet truck of the middle floating structure of this spring pressure charged also need increase a balance wheel respectively in the car body both sides.But, when drive wheel passes through a pit or uneven road surface, because the distance that drive wheel floats downwards is limited, so just may occur having only two balance wheels to support car body and situation that drive wheel can not land, in order not make drive wheel unsettled, but the balance wheel of car body both sides also needs to adopt floating structure, that is to say that balance wheel also will be able to stretch, but, exactly because the telescopicing performance of balance wheel, make the car body both sides stressed not simultaneously, wiggly situation can appear in vehicle body in the process of moving; And, because the compressed distance of pressurized spring is changeless after installation, that is to say, unless spring goes to adjust after assembling artificially, its compressed degree all is not change when zero load or when load, so pressurized spring is identical in the unloaded power that is produced during with load, the not enough situation of spring force when its unsettled phenomenon of drive wheel when unloaded or load occur easily, thereby make drive wheel friction force deficiency over the ground, produce the phenomenon that does not drive car body, the solution of this phenomenon is high especially to the adjustment number of times requirement of pressurized spring, thereby is not easy to realize.
The utility model content:
The technical problems to be solved in the utility model is, provide under a kind of situation that pressurized spring is not installed at the balance wheel place, can guarantee that not only car body does not have the phenomenon of jolting in the process of moving and promptly remains plateau, can also drive car load and produce enough power, and pressurized spring is adjusted the little electric pallet truck power hitch of difficulty.
Technical solution of the present utility model is that a kind of electric pallet truck power hitch with following structure is provided: it comprises pressurized spring I, pipe link I, pipe link II, pressurizing cylinder and pressurized spring II; Described pressurized spring I is fixed between car body top and the link span; The end of described pipe link I and pipe link II is fixed on the link span, and its other end is hinged on the car body; Described link span is fixed on the gear case that is connected with drive wheel in the driver element; Described pressurized spring II one end is located on the link span, and its other end is connected with pressurizing cylinder; Described pressurizing cylinder is connected with the car body top.
After adopting above structure, compared with prior art, the utlity model has following advantage: when electric pallet truck is unloaded, the pressurized spring I that the utility model can utilize single pressurized spring promptly to utilize and adjust in advance comes the drive wheel supercharging in the driver element is promptly increased drive wheel friction force over the ground, thereby drives the vehicle body smooth-ride; When the electric pallet truck load, the utility model can offer pressurizing cylinder power by the oil pump running, make the cylinder barrel of pressurizing cylinder produce downward pressure to pressurized spring II, because pressurized spring I adjusts in advance, it has downward pressure all the time to drive wheel, so under in the pressurized spring of both sides, acting on, drive wheel has obtained enough power and has driven vehicle body and travel, and the balance wheel in the electronic pallet carrying does not need to install pressurized spring I yet, the phenomenon of jolting no longer appears in vehicle body in the driving process of car body, can remain plateau.In addition, pressurized spring II can need adopt manual type to adjust the requirement and the difficulty of pressurized spring pressure according to different road surfaces thereby greatly reduce prior art by adjusting how much realizing of oil mass in the pressurizing cylinder to the adjustment of drive wheel pressure size at any time.
Above-mentioned pressurized spring II one end is located on the link span, and its other end is connected with pressurizing cylinder can adopt following concrete structure: the end of described pressurized spring II withstands on the step II of strut bar I, and its other end withstands on the step I of cylinder barrel of pressurizing cylinder; Described strut bar I is vertically fixed on the link span; Described cylinder barrel bottom has a spacing that can guarantee can not run into when described cylinder barrel is subjected to downward hydraulic pressure strut bar I top when pressurized spring II is state of nature and between the top of strut bar I.
As a kind of improvement of the present utility model, the step I of described cylinder barrel can slide up and down to be connected on the stroke frame; Described stroke frame is fixed on the top of car body.The setting of stroke frame is can not run into the top of strut bar I for the bottom that further guarantees cylinder barrel effectively when cylinder barrel is subjected to the downward pressure of pressurized spring II, thereby makes pressurizing cylinder and the pressurized spring II can normal operation.
Above-mentioned pressurizing cylinder is connected with the car body top and refers to that the piston rod of described pressurizing cylinder is fixed on the car body top.
As another kind of improvement the of the present utility model, the utility model is except being provided with pipe link I and the pipe link II between near the car body at pressurized spring I place and link span, is provided with pipe link III and pipe link IV between the car body at close pressurizing cylinder place and link span; The end of described pipe link III and pipe link IV is fixed on the link span, and its other end is hinged on the car body.Pipe link III, pipe link IV, car body and link span consist of a four-bar linkage, and its setting can make driver element come-up or sinking neatly under the effect of pressurizing cylinder and pressurized spring II better, thereby guarantees the better stationarity of vehicle body.
Description of drawings:
Fig. 1 is the structural representation of the utility model power hitch.
Fig. 2 is the left TV structure scheme drawing of Fig. 1.
Semi-sictional view structural representation when Fig. 3 does not install driver element and stroke frame for Fig. 1 the utility model power hitch.
Shown in the figure: 1, pressurized spring I, 2, pipe link I, 3, pipe link II, 4, car body, 5, link span, 6, drive wheel, 7, gear case, 8, pressurizing cylinder, 9, pressurized spring II, 10, piston rod, 11, cylinder barrel, 12, strut bar I, 13, stroke frame, 14, pipe link III, 15, pipe link IV, 16, step I, 17, step II, 18, the setting of spring bar, 19, step III, 20, strut bar II, 21, step IV, 22, nut.
The specific embodiment:
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
As Fig. 1, Fig. 2 and shown in Figure 3, same as the prior art, the utility model electric pallet truck power hitch comprises pressurized spring I1, pipe link I2 and pipe link II3; Described pressurized spring I1 is fixed between car body 4 tops and the link span 5; The end of described pipe link I2 and pipe link II3 is fixed on the link span 5, and its other end is hinged on the car body 4; Described link span 5 is fixed on the gear case 7 that is connected with drive wheel 6 in the driver element.The mode that described pressurized spring I1 is fixed between car body 4 tops and the link span 5 is adopted as following concrete structure: the end of described pressurized spring I1 withstands on the step III19 of a setting of spring bar 18, and its other end withstands on the step IV21 of a strut bar II20; Described setting of spring bar 18 top thread rods revolved behind the tapped bore at car body top fixing by a nut 22; Described strut bar II20 is fixed on the link span 5 in vertical direction.
Unlike the prior art be that the utility model also comprises pressurizing cylinder 8 and pressurized spring II9; Described pressurized spring II9 one end is located on the link span 5, and its other end is connected with pressurizing cylinder 8; Described pressurizing cylinder 8 is connected with car body 4 tops.The II9 of pressurized spring described in the utility model one end is located on the link span 5, its other end and pressurizing cylinder 8 ways of connecting are adopted as following concrete mode: the end of described pressurized spring II9 withstands on the step II17 of strut bar I12, and its other end withstands on the step I16 of cylinder barrel 11 of pressurizing cylinder 8; Described strut bar I12 is vertically fixed on the link span 5; Do not have a spacing that can guarantee can not run into when described cylinder barrel 11 is subjected to downward hydraulic pressure strut bar I12 top when pressurized spring II9 is subjected to downward pressure when pressurized spring II9 is state of nature in described cylinder barrel 11 bottoms and between the top of strut bar I12.As a kind of improvement of the present utility model, the step I16 of described cylinder barrel 11 can slide up and down to be connected on the stroke frame 13; Described stroke frame 13 is fixed on the top of car body 4.
In addition, pressurizing cylinder described in the utility model 8 is adopted as following concrete mode with car body 4 top ways of connecting: the piston rod 10 of described pressurizing cylinder 8 is fixed on car body 4 tops.And be provided with pipe link III14 and pipe link IV15 between the car body 4 at close pressurizing cylinder 8 places and the link span 5; The end of described pipe link III14 and pipe link IV15 is fixed on the link span 5, and its other end is hinged on the car body 4.
Principle of work of the present utility model is, by adjusting the oil mass in the pressurizing cylinder 8, thereby make 11 couples of pressurized spring II9 of cylinder barrel produce a downward pressure, in other words, be exactly that pressurizing cylinder 8 orders about pressurized spring II9 to the driver element application of force, making driver element by connecting rod then is the center of circle with the adapter shaft of pipe link and car body, with the pipe link is that radius produces a movement tendency downwards, just increased ground-surface pressure, and the pressurized spring I1 in the utility model is because realize that adjusted is good, so pressurized spring I1 works at any time.
Claims (5)
1. an electric pallet truck power hitch comprises pressurized spring I (1), pipe link I (2) and pipe link II (3); Described pressurized spring I (1) is fixed between car body (4) top and the link span (5); The end of described pipe link I (2) and pipe link II (3) is fixed on the link span (5), and its other end is hinged on the car body (4); Described link span (5) is fixed on the gear case (7) that is connected with drive wheel (6) in the driver element, it is characterized in that: it also comprises pressurizing cylinder (8) and pressurized spring II (9); Described pressurized spring II (9) one ends are located on the link span (5), and its other end is connected with pressurizing cylinder (8); Described pressurizing cylinder (8) is connected with car body (4) top.
2. electric pallet truck power hitch according to claim 1, it is characterized in that: described pressurized spring II (9) one ends are located on the link span (5), its other end is connected with pressurizing cylinder (8) and refers to, the end of described pressurized spring II (9) withstands on the step II (17) of strut bar I (12), and its other end withstands on the step I (16) of cylinder barrel (11) of pressurizing cylinder (8); Described strut bar I (12) is vertically fixed on the link span (5); Described cylinder barrel (11) bottom has one at pressurized spring II (9) when being state of nature and between the top of strut bar I (12) can guarantee that described cylinder barrel (11) can not run into the spacing at strut bar I (12) top when being subjected to downward hydraulic pressure.
3. electric pallet truck power hitch according to claim 2 is characterized in that: the step I (16) of described cylinder barrel (11) can slide up and down to be connected on the stroke frame (13); Described stroke frame (13) is fixed on the top of car body (4).
4. electric pallet truck power hitch according to claim 1 is characterized in that: described pressurizing cylinder (8) is connected with car body (4) top and refers to that the piston rod (10) of described pressurizing cylinder (8) is fixed on car body (4) top.
5. electric pallet truck power hitch according to claim 1 is characterized in that: be provided with pipe link III (14) and pipe link IV (15) between car body (4) that close pressurizing cylinder (8) is located and the link span (5); The end of described pipe link III (14) and pipe link IV (15) is fixed on the link span (5), and its other end is hinged on the car body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201145554U CN201087105Y (en) | 2007-09-05 | 2007-09-05 | Power suspension mechanism of electric tray transport cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201145554U CN201087105Y (en) | 2007-09-05 | 2007-09-05 | Power suspension mechanism of electric tray transport cart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201087105Y true CN201087105Y (en) | 2008-07-16 |
Family
ID=39634699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201145554U Expired - Lifetime CN201087105Y (en) | 2007-09-05 | 2007-09-05 | Power suspension mechanism of electric tray transport cart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201087105Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640446A (en) * | 2013-11-28 | 2014-03-19 | 苏州先锋物流装备科技有限公司 | Drive installation damping system |
| CN104118294A (en) * | 2014-07-10 | 2014-10-29 | 奇瑞重工股份有限公司 | Suspension device of electric pallet truck |
| CN107487741A (en) * | 2017-08-28 | 2017-12-19 | 宁波如意股份有限公司 | It is a kind of to balance wheel construction and the fork truck with the structure |
| CN107673273A (en) * | 2017-09-22 | 2018-02-09 | 上海托华机器人有限公司 | A kind of floor truck |
| CN112777525A (en) * | 2019-11-11 | 2021-05-11 | 怀化大龙新型建材有限公司 | Self-lifting trailer device |
-
2007
- 2007-09-05 CN CNU2007201145554U patent/CN201087105Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640446A (en) * | 2013-11-28 | 2014-03-19 | 苏州先锋物流装备科技有限公司 | Drive installation damping system |
| CN103640446B (en) * | 2013-11-28 | 2016-08-17 | 苏州先锋物流装备科技有限公司 | A kind of drive installation shock mitigation system |
| CN104118294A (en) * | 2014-07-10 | 2014-10-29 | 奇瑞重工股份有限公司 | Suspension device of electric pallet truck |
| CN107487741A (en) * | 2017-08-28 | 2017-12-19 | 宁波如意股份有限公司 | It is a kind of to balance wheel construction and the fork truck with the structure |
| CN107673273A (en) * | 2017-09-22 | 2018-02-09 | 上海托华机器人有限公司 | A kind of floor truck |
| CN112777525A (en) * | 2019-11-11 | 2021-05-11 | 怀化大龙新型建材有限公司 | Self-lifting trailer device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO LIFTSTAR MATERIAL HANDLING EQUIPMENT CO., L Free format text: FORMER OWNER: NINGBO LIDA MOVING EQUIPMENT FACTORY Effective date: 20110913 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110913 Address after: 315144 Xicheng village, Ningbo, Yinzhou District, Zhejiang Patentee after: Ningbo Lida Logistics Equipment Co.,Ltd. Address before: 315144, Zhejiang, Ningbo, Yinzhou District province look forward to the South Gate of the town of song Patentee before: Ningbo Lida Moving Equipment Factory |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080716 |
|
| CX01 | Expiry of patent term |