CN105036011A - Frame lifting linkage mechanism of hand hydraulic carrier - Google Patents
Frame lifting linkage mechanism of hand hydraulic carrier Download PDFInfo
- Publication number
- CN105036011A CN105036011A CN201510547527.0A CN201510547527A CN105036011A CN 105036011 A CN105036011 A CN 105036011A CN 201510547527 A CN201510547527 A CN 201510547527A CN 105036011 A CN105036011 A CN 105036011A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- rod assembly
- vehicle frame
- hinged
- coupling head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F2700/00—Lifting apparatus
- B66F2700/09—Other lifting devices
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Handcart (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a frame lifting linkage mechanism of a hand hydraulic carrier. The mechanism comprises a lever pivot shaft and a connecting rod component mounted on a frame, wherein the lever pivot shaft is coated with a rocking frame; a rocking arm and a rocking block are arranged on the rocking frame at intervals; the rocking arm is hinged with a carrier support base; the connecting rod component consists of a pull rod and connecting heads; the connecting head at one end is hinged to a bracket plate of a carrier fork wheel through a conversion block; the connecting head at the other end of the connecting rod component is connected to the rocking block through a linkage pull plate; one end of the linkage pull plate is hinged with the connecting heads of the connecting rod component; a long hole is formed in the other end of the linkage pull plate, and is connected with the rocking block by a slide pin pair; a smooth corner is arranged on the linkage pull plate near the middle part, and is hinged with a stop plate; and the stop plate is fixedly connected to the frame. The mechanism changes the stress mode of the connecting rod component, reduces the deformation of the connecting rod component, prolongs the service life of whole carrier, and is simple in structure and convenient for machining and manufacturing.
Description
Technical field
The present invention relates to the link gear of vehicle frame lifting in a kind of device for carrying heavy goods, particularly a kind of hand hydraulic carrier.
Background technology
When the FCL cargo that carrying weight is larger, be generally come by mechanical loading instrument, typically use fork truck.And the hand operated transport in fork truck is applied comparatively extensive, this fork truck is with hydraulic lift goods and carries goods by wheel realization movement.That commonly uses in existing hand operated transport has a kind of manual hydraulic tray transport cart, the structure of this manual hydraulic tray transport cart mainly comprises handle, vehicle frame, supporting base, the vehicle frame top board that is arranged on the hydraulic actuating cylinder on supporting base and is connected with the piston rod upper end of hydraulic actuating cylinder, and hoisting of vehicle frame needs Driven by Hydraulic Cylinder to complete.The pallet fork of vehicle frame carrys out bearing goods as load platform, top board upward movement under hydraulic actuating cylinder effect of vehicle frame, under the connecting rod assembly effect of pallet fork on the downside of it, promotes wheel carrier and rises, supported by pallet fork.Rigid link assembly relies on thrust that wheel carrier is risen, and the cargo weight in addition hoisted is comparatively large, thus causes connecting rod assembly flexural deformation, because this increasing transport trolley maintenance cost, shortens the service life of this transport trolley.
Summary of the invention
The technical matters that the present invention solves is, provides a kind of hand hydraulic carrier vehicle frame lifting link-gear, changes its connecting rod assembly force way, not only reduces connecting rod assembly distortion with this, reduces maintenance cost, extend operating cycles; And structure is simple, is convenient to processing and manufacturing.
The present invention solves the problems of the technologies described above and realizes by the following technical solutions: a kind of hand hydraulic carrier vehicle frame lifting link-gear, comprise and be arranged on lever pivot on vehicle frame and connecting rod assembly, this lever pivot overcoat has reel cage, on reel cage, interval arranges rocking arm and swinging block, described rocking arm and transport trolley supporting base hinged, this connecting rod assembly is made up of pull bar and coupling head, and the coupling head of its one end is hinged on by conversion block on the supporting plate of transport trolley fork wheel; The coupling head of the other end of described connecting rod assembly is connected on described swinging block by interlock arm-tie, and the coupling head of this interlock arm-tie one end and connecting rod assembly is hinged, and the other end has elongated hole and is connected with sliding pin pair with swinging block; Described interlock arm-tie sets up smooth corners separately near pars intermedia, and at the hinged thrust plate in smooth corners place, this thrust plate is fixed on described vehicle frame; Described lever pivot hoists with vehicle frame or declines, and rocking arm rotates around supporting base, and swinging block is with rocking arm rotating in same direction, and interlock arm-tie one end is rotated relative to swinging block and moves, and smooth corners place rotates around thrust plate, and connecting rod assembly links arm-tie other end planar movement relatively.
Hand hydraulic carrier vehicle frame lifting link-gear of the present invention, owing to adopting with the interlock arm-tie of smooth corners and thrust plate version, is pulling force by the force way of connecting rod assembly by pressure change, reduces the stress deformation of connecting rod assembly with this; Although existing connecting rod assembly and connecting rod assembly of the present invention and lever pivot are the connection mode of rigid connector, but this structural difference of the present invention, avoid the load concentration phenomenon of existing rigid connector and lever pivot junction, make the safety that more becomes that hoists of vehicle frame pallet fork; The resistance that this version need overcome is less, and power transmission directly, makes hoisting of vehicle frame pallet fork quicker more rapidly; This version is more simple, facilitates processing and manufacturing.
There is thread segment one end of described connecting rod assembly pull bar, and be connected by two bolt with described arbitrary connecting rod assembly coupling head, this pair of bolt is respectively in and both sides, coupling head junction.
Above-mentioned setting, makes the total length of connecting rod assembly can adjust according to vehicle frame maximum height of lift, is convenient to process and assemble.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is that prior art hand hydraulic carrier vehicle frame hoists pre-structure schematic diagram.
Fig. 2 is structural representation after prior art hand hydraulic carrier vehicle frame hoists.
Fig. 3 is that hand hydraulic carrier vehicle frame lifting link-gear of the present invention hoists pre-structure schematic diagram.
Fig. 4 is structural representation after hand hydraulic carrier vehicle frame lifting link-gear of the present invention hoists.
Fig. 5 is the local structural graph before hand hydraulic carrier vehicle frame lifting link-gear of the present invention hoists.
Fig. 6 is the local structural graph after hand hydraulic carrier vehicle frame lifting link-gear of the present invention hoists.
1. supporting base 2. hydraulic actuating cylinder 3. handle 4. top board 5. header board 6. rocking arm 7. connecting rod assembly 8. pallet fork 9. wheel carrier 10. supporting plate 11. fork wheels in Fig. 1.
1. pallet fork 2. header board 3. top board 4. supporting base 5. bull wheels in Fig. 3.
6. fork wheels in Fig. 4.
In Fig. 5, link arm-tie 14. coupling head 15. lever pivot 16. pull bar 17. bolt 18. coupling head 19. conversion block 20. welding block 21. thread segment 22. bolt at 7. thrust plate 8. swinging block 9. rocking arm 10. reel cage 11. elongated hole 12. turnings 13..
23. supporting plates in Fig. 6.
Detailed description of the invention
In order to understand the present invention better relative to the improvement done by prior art, before being described in detail to the specific embodiment of the present invention, the prior art hand hydraulic carrier vehicle frame first mentioned the background technology part linkage structure that hoists is illustrated by reference to the accompanying drawings.As shown in Figure 1 and Figure 2, in prior art hand hydraulic carrier comprise supporting base 1, the hydraulic actuating cylinder 2 be arranged on supporting base 1, the handle 3 be connected with hydraulic actuating cylinder 2 and the vehicle frame top board 4 that is connected with hydraulic actuating cylinder 2 piston rod, header board 5 is between top board 4 and pallet fork 8, connecting rod assembly 7 is connected with supporting base 1 through rocking arm 6, wherein rocking arm 6 and header board 5 are through pinned connection, and connecting rod assembly 7 is connected through the supporting plate 10 of wheel carrier 9 with fork wheel 11.This hand hydraulic carrier realizes hoisting of goods by hydraulic actuating cylinder 2 and declines, and has pulled transport operation by manpower.Continuous pressing handle 3, make pressure oil enter top board 4 on hydraulic actuating cylinder 2 piston rod jack-up vehicle frame, header board 5 is with top board 4 upward movement, and rocking arm 6 rotates around with supporting base 1 and header board 5 point of connection, simultaneously drive link assembly 7 promotes wheel carrier 9 and hoists, and pallet fork 8 front end is propped up by wheel carrier 9.
For above-mentioned prior art hand hydraulic carrier, the force way of connecting rod assembly 7 is pressure, and owing to waiting the general comparatively heaviness of goods of carrying that hoists, this force way easily causes connecting rod assembly flexural deformation.Rocking arm 6 and supporting base 1 linkage section are when hoisting, its to the thrust at header board 5 bearing pin place along rocking arm 6 and supporting base 1 linkage section centerline direction, this thrust can be decomposed into horizontal component of force along connecting rod assembly centerline direction and component straight down, some is used for offsetting this component straight down by the M.E that hydraulic actuating cylinder 2 provides, and which adds the resistance that pallet fork 8 promotes.
The rocking arm 6 used due to prior art hand hydraulic carrier is generally integral type; rocking arm 6 is connected with supporting base 1, header board 5 and connecting rod assembly 7 simultaneously; the stressed complexity of this Integral rigid attaching parts, easily causing load concentration with header board 5 pinned connection place, causes damage to rocking arm 6; If connecting rod assembly 7 occurs bending and deformation, also will make to produce comformability unbalance loading between connecting rod assembly 7 and rocking arm 6, final or aggravation connecting rod assembly 7 torsional deflection, thus shorten transport trolley car load service life, also add transport trolley maintenance cost from another point of view.
Embodiments of the present invention are exactly for improvement during above-mentioned prior art hand hydraulic carrier vehicle frame lifting done by connecting rod assembly problem on deformation.Detailed description is made to this detailed description of the invention below.
As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, hand hydraulic carrier vehicle frame of the present invention is made up of pallet fork 1, header board 2 and top board 3, vehicle frame lifting link-gear of the present invention comprises lever pivot 15 and connecting rod assembly, lever pivot 15 overcoat has reel cage 10, on reel cage 10, interval arranges rocking arm 9 and swinging block 8; rocking arm 9 and swinging block 8 are symmetrical arranged two groups along reel cage 10, and rocking arm 9 is hinged with transport trolley supporting base 4.Lever pivot 15 is through reel cage 10, and its two end supports, in vehicle frame header board 2 both sides, is also connected with transport trolley bull wheel 5 with on the supporting base 4 that rocking arm 9 is hinged.Connecting rod assembly is made up of pull bar 16 and coupling head 14,18, coupling head 18 is hinged on the supporting plate 23 of transport trolley fork wheel 6 by conversion block 19, the coupling head 14 of the other end of connecting rod assembly is connected on swinging block 8 by interlock arm-tie 13, the coupling head 14 of this interlock arm-tie 13 one end and connecting rod assembly is hinged, and the other end has elongated hole 11 and is connected with sliding pin pair with swinging block 8; Interlock arm-tie 13 sets up smooth corners 12 separately near pars intermedia, at the hinged thrust plate 7 in smooth corners 12 place, on the header board 2 that this thrust plate 7 is fixed in vehicle frame and/or pallet fork 1.
Welding block 20 is welded on pallet fork 1 fore-end, and conversion block 19 has three place's connecting bores, a place and welding block 20 hinged, a place and supporting plate 23 hinged, a place and coupling head 18 hinged.Supporting plate 23 is for supporting the wheel shaft of fixation fork wheel 6.There is thread segment 21 one end of connecting rod assembly pull bar 16, and be connected by two bolt with connecting rod assembly coupling head 18, bolt 17 is positioned at the side with coupling head 18 junction, and bolt 22 is positioned at the opposite side with coupling head 18 junction.To hoist maximum height according to vehicle frame, can threadingly section 21 adjusting bolt 22, make pallet fork 1 play rising amount in the acquisition coupling at fork wheel 6 place with this.Thread segment 21 also can be opened in pull bar 16 and coupling head 14 junction, and now bolt 17 and bolt 22 lay respectively at coupling head 14 and both sides, pull bar 16 junction.
Also can connecting fluid hydraulic driver and handle on supporting base 4, promote transport trolley handle, bull wheel 5 is coordinated to be moved to goods vantage point place to be handled, goods is positioned on pallet fork 1, utilize oil pressure lever principle, vehicle frame top board 3 is sent power to by fluid pressure drive device, top board 3 is upwards promoted, header board 2 upwards will promote with top board 3, lever pivot 15 on header board 2 promotes thereupon, the reel cage 10 be enclosed within outside lever pivot 15 also will promote, because the rocking arm 9 on reel cage 10 will rotate around itself and supporting base 4 point of connection, then reel cage 10 will along lever pivot 15 rotating in same direction, swinging block 8 also rotating in same direction on reel cage 10.Because swinging block 8 and interlock arm-tie 13 junction are that sliding pin is secondary, the bearing pin in this junction or band sleeve bolt will make interlock arm-tie 13 rotate with thrust plate 7 point of connection around its turning 12, and bearing pin or band sleeve bolt move along elongated hole 11 simultaneously.Due to the existence at turning 12, the interlock arm-tie part be connected with coupling head 14 will produce pulling force to pull bar 16, this pull transfer is to coupling head 18, coupling head 18 will pull conversion block 19 to rotate, due to welding block 20 and pallet fork 1 fore-end weld together, the rotation of conversion block 19 will make welding block 20 hoist together with pallet fork 1 front end opposite brackets plate 23 and fork wheel 6, and pallet fork 1 rear end hoists with header board 2, pallet fork 1 entirety gets a promotion, and planar movement made by connecting rod 16 relatively interlock arm-tie 13.
Goods needs unloading after arriving appointed place, by goods and transport trolley self gravitation, pallet fork 1 is subject to decline application force, pallet fork 1 front end welding block 20 drives conversion block 19 to rotate backward around with supporting plate 23 junction, conversion block 19 pulls coupling head 18 counter motion simultaneously, and other end coupling head 14 pulls interlock arm-tie 13 oppositely to rotate along its turning 12 with thrust plate 7 point of connection; Header board 2 declines with pallet fork 1 rear end simultaneously, lever pivot 15 on header board 2 declines, reel cage 10 declines with lever pivot 15; rocking arm 9 rotates backward around itself and supporting base 4 point of connection, and swinging block 8 rotates backward, and also can make the bearing pin of swinging block 8 and interlock arm-tie 13 junction or be with sleeve bolt to move along elongated hole 11; and interlock arm-tie 13 is rotated with thrust plate 7 point of connection around its turning 12; and like this, pallet fork 1 entirety is declined, and interlock arm-tie 13 also can reset very soon.
For above-mentioned hand hydraulic carrier vehicle frame lifting link-gear, the force way of pull bar 16 is pulling force, and its direction of pull is along pull bar 16 line of centers under interlock arm-tie 13 acts on, and wait to hoist the general comparatively heaviness of goods of carrying, this force way has played the good tensile property of pull bar 16, reduces the deflection of pull bar 16.When pallet fork 1 hoists, rocking arm 9 and swinging block 8 disperse to the application force at lever pivot 15 place, avoid the load concentration of original integral type rocking arm at bearing pin place.The version of interlock arm-tie 13, make power lever pivot 15 directly and be passed to connecting rod assembly fast, pallet fork 1 hoists and the process idle work that declines reduces, the introducing of interlock arm-tie 13 simultaneously does not increase the complexity of vehicle frame lifting link-gear, and component is simple, is convenient to processing and manufacturing and assembling.Manual transport trolley with non-hydraulic form for major impetus time, if still there is connecting rod assembly pressurized phenomenon, link gear of the present invention is suitable for too.
Finally illustrate that the hand hydraulic carrier vehicle frame lifting link-gear that above embodiment is mentioned is not limited to this case and provides diagram.Those of ordinary skill in the art should be appreciated that and can modify to technical scheme of the present invention or equivalent replacement, and does not depart from aim and the scope of technical solution of the present invention, and it all should be encompassed in the middle of right of the present invention.
Claims (2)
1. a hand hydraulic carrier vehicle frame lifting link-gear, comprise and be arranged on lever pivot (15) on vehicle frame and connecting rod assembly, this lever pivot (15) overcoat has reel cage (10), the upper interval of reel cage (10) arranges rocking arm (9) and swinging block (8), described rocking arm (9) is hinged with transport trolley supporting base (4), and this connecting rod assembly is by pull bar (16) and coupling head (14; 18) form, the coupling head (18) of its one end is hinged on by conversion block (19) on the supporting plate (23) of transport trolley fork wheel (6), it is characterized in that: the coupling head (14) of the other end of described connecting rod assembly is connected on described swinging block (8) by interlock arm-tie (13), the coupling head (14) of this interlock arm-tie (13) one end and connecting rod assembly is hinged, and the other end has elongated hole (11) and is connected with sliding pin pair with swinging block (8); Described interlock arm-tie (13) sets up smooth corners (12) separately near pars intermedia, and at the hinged thrust plate in smooth corners (12) place (7), this thrust plate (7) is fixed on described vehicle frame; Described lever pivot (15) hoists with vehicle frame or declines; rocking arm (9) rotates around supporting base (4); swinging block (8) is with rocking arm (9) rotating in same direction; interlock arm-tie (13) one end is rotated relative to swinging block (8) and moves; smooth corners (12) place is around thrust plate (7) rotation, and connecting rod assembly links arm-tie (13) other end planar movement relatively.
2. hand hydraulic carrier vehicle frame lifting link-gear according to claim 1, is characterized in that: there is thread segment (21) one end of described connecting rod assembly pull bar (16), with arbitrary described connecting rod assembly coupling head (14/18) by two bolt (17; 22) connect, this pair of bolt (17; 22) be respectively in and both sides, coupling head junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510547527.0A CN105036011B (en) | 2015-08-31 | 2015-08-31 | Hand hydraulic carrier vehicle frame lifting link-gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510547527.0A CN105036011B (en) | 2015-08-31 | 2015-08-31 | Hand hydraulic carrier vehicle frame lifting link-gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105036011A true CN105036011A (en) | 2015-11-11 |
| CN105036011B CN105036011B (en) | 2017-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510547527.0A Expired - Fee Related CN105036011B (en) | 2015-08-31 | 2015-08-31 | Hand hydraulic carrier vehicle frame lifting link-gear |
Country Status (1)
| Country | Link |
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| CN (1) | CN105036011B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285241A (en) * | 2016-03-31 | 2017-10-24 | 比亚迪股份有限公司 | A kind of rod assembly of pallet fork and the fork truck with it |
| CN108383036A (en) * | 2018-04-16 | 2018-08-10 | 广东美的智能机器人有限公司 | Automatic guided vehicle |
| CN108529487A (en) * | 2018-07-04 | 2018-09-14 | 嘉兴市泰新金属制品有限公司 | A kind of movable lifting machine |
| CN108640021A (en) * | 2018-07-04 | 2018-10-12 | 嘉兴市泰新金属制品有限公司 | A kind of movable lifting machine |
| CN109606238A (en) * | 2018-12-29 | 2019-04-12 | 北京星航机电装备有限公司 | A kind of board-like shutdown system fault rescue vehicle of vehicle lift |
| CN113428807A (en) * | 2021-06-22 | 2021-09-24 | 河海大学常州校区 | Trailer for shipping speed boats |
| CN113479823A (en) * | 2021-09-08 | 2021-10-08 | 山东明宇重工机械有限公司 | Lifting mechanism for pallet truck |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203187355U (en) * | 2011-07-02 | 2013-09-11 | 张铭勇 | Fork sleeve type hand-operated hydraulic carrying vehicle |
| CN204417049U (en) * | 2015-01-07 | 2015-06-24 | 王德官 | The low manual hydraulic tray car that hoists |
-
2015
- 2015-08-31 CN CN201510547527.0A patent/CN105036011B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203187355U (en) * | 2011-07-02 | 2013-09-11 | 张铭勇 | Fork sleeve type hand-operated hydraulic carrying vehicle |
| CN204417049U (en) * | 2015-01-07 | 2015-06-24 | 王德官 | The low manual hydraulic tray car that hoists |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285241A (en) * | 2016-03-31 | 2017-10-24 | 比亚迪股份有限公司 | A kind of rod assembly of pallet fork and the fork truck with it |
| CN108383036A (en) * | 2018-04-16 | 2018-08-10 | 广东美的智能机器人有限公司 | Automatic guided vehicle |
| CN108529487A (en) * | 2018-07-04 | 2018-09-14 | 嘉兴市泰新金属制品有限公司 | A kind of movable lifting machine |
| CN108640021A (en) * | 2018-07-04 | 2018-10-12 | 嘉兴市泰新金属制品有限公司 | A kind of movable lifting machine |
| CN108640021B (en) * | 2018-07-04 | 2023-07-21 | 嘉兴市泰新金属制品有限公司 | Movable lifting machine |
| CN108529487B (en) * | 2018-07-04 | 2023-09-01 | 嘉兴市泰新金属制品有限公司 | Movable lifting machine |
| CN109606238A (en) * | 2018-12-29 | 2019-04-12 | 北京星航机电装备有限公司 | A kind of board-like shutdown system fault rescue vehicle of vehicle lift |
| CN113428807A (en) * | 2021-06-22 | 2021-09-24 | 河海大学常州校区 | Trailer for shipping speed boats |
| CN113479823A (en) * | 2021-09-08 | 2021-10-08 | 山东明宇重工机械有限公司 | Lifting mechanism for pallet truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105036011B (en) | 2017-08-18 |
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