CN104925705A - Portal frame assembly used for forklift and forklift with same - Google Patents
Portal frame assembly used for forklift and forklift with same Download PDFInfo
- Publication number
- CN104925705A CN104925705A CN201410301648.2A CN201410301648A CN104925705A CN 104925705 A CN104925705 A CN 104925705A CN 201410301648 A CN201410301648 A CN 201410301648A CN 104925705 A CN104925705 A CN 104925705A
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- Prior art keywords
- door frame
- chain
- freely
- free
- oil tank
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- 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
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- 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
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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)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a portal frame assembly used for a forklift and the forklift with the same. The portal frame assembly used for the forklift comprises a first portal frame, a second portal frame arranged on the outer side of the first portal frame, a free lifting oil cylinder arranged on the inner side of the first portal frame, a free lifting chain wheel arranged on the top of the free lifting oil cylinder, a free lifting chain wound around the free lifting chain wheel, an installation piece and an oil pipe, wherein the free lifting chain wheel is driven by the free lifting oil cylinder to vertically move relative to the first portal frame; the installation piece is arranged on the side, away from the free lifting chain wheel, of the free lifting chain; the oil pipe is wound around the installation piece. By means of the portal frame assembly used for the forklift, the oil pipe is wound around the free lifting chain, so that a large number of oil pipe clamps and oil pipe idler wheels are omitted; the structure of the portal frames is simple, compact and orderly; the view of a driver is widened. In addition, the installation piece is simple in structure and convenient to assemble and produce.
Description
Technical field
The present invention relates to fork truck apparatus field, especially relate to a kind of door frame assembly for fork truck and there is its fork truck.
Background technology
Point out in correlation technique, the poor stability of free lift oil tank when hoisting of three grades of full free gantries, the side direction roller on goods shelf and free lift oil tank itself is caused easily to damage and hoist abnormal sound, reduce the service life of door frame, and free lift oil tank is in the process of hoisting, there is the problem that oil pipe blocks the visual field in door frame pars intermedia branch, and makes the outward appearance of whole door frame seem mixed and disorderly.
Summary of the invention
The present invention is intended at least to solve one of technical matters existed in prior art.For this reason, one object of the present invention be propose a kind of door frame assembly for fork truck, described door frame assembly simple for structure, compact, orderly, the visual field is wide.
Another object of the present invention is to propose a kind of fork truck with the above-mentioned door frame assembly for fork truck.
Door frame assembly according to a first aspect of the present invention, comprising: the first door frame; Second door frame, described second door frame is located at the outside of described first door frame; Free lift oil tank, described free lift oil tank is located at the inner side of described first door frame; Freely hoist sprocket wheel, and the described sprocket wheel that freely hoists is located at the top of described free lift oil tank, and the described sprocket wheel that freely hoists can be moved up and down relative to described first door frame by described free lift oil tank driving; Freely hoist chain, and the described chain winding that freely hoists freely hoists on sprocket wheel described; Fabricated section, described fabricated section is located at the side away from the described sprocket wheel that freely hoists of the described chain that freely hoists; And oil pipe, described oil pipe winding is on described fabricated section.
According to the door frame assembly for fork truck of the present invention, by oil pipe winding is freely being hoisted on chain, thus eliminate a large amount of oil pipe clamps and oil pipe roller, make the structure of door frame more succinct, compact, orderly, make whole door frame assembly seem succinct, generous, widen the visual field of chaufeur.In addition, the structure of fabricated section simple, be convenient to assembling and produce.
Alternatively, the described chain that freely hoists comprises the multiple chain links be connected successively, and described fabricated section comprises the multiple adapter plates be spaced apart from each other, and the described chain link of every two joint is provided with adapter plate described at least one.
Further, the two ends of the Width along the described chain that freely hoists of each described adapter plate bend towards the direction away from the described centre of sprocket that freely hoists.
Alternatively, the side at the center of the described sprocket wheel that freely hoists of the vicinity of each described adapter plate is provided with connecting panel, and described adapter plate is connected to corresponding described chain link by described connecting panel.
Further, described door frame assembly comprises further: oil pipe baffle plate, described oil pipe baffle plate is formed as inverted U-shaped shape, and the lower end of described oil pipe baffle plate is connected to the top of the described sprocket wheel that freely hoists, and the roof of described oil pipe baffle plate and the described diapire freely hoisting sprocket wheel are spaced apart from each other.
Particularly, the top of described free lift oil tank is provided with free cylinder chain permanent seat, and described free cylinder chain permanent seat is connected on the inner surface of described first door frame, and wherein said one end freely hoisting chain is fixed on described free cylinder chain permanent seat.Thus, structure is more stable, and technological requirement is lower, and intensity is higher.
Alternatively, described free cylinder chain permanent seat is formed with the through hole run through, and wherein said oil pipe is adapted to pass through described through hole.
Preferably, described free lift oil tank is two, and the setting that is spaced apart from each other about described two free lift oil tanks.Thus, the visual field can be widened.
Particularly, the bottom of described first door frame is provided with first crossbeam, and described first crossbeam is provided with two mounting blocks be spaced apart from each other, and the lower end of each described free lift oil tank is connected on corresponding described mounting blocks.
Further, the rear surface of described mounting blocks is positioned at the front of the rear surface of described first crossbeam.
Further, door frame assembly for fork truck comprises further: free cylinder permanent seat, described free cylinder permanent seat is located at the top of described free lift oil tank, described free cylinder permanent seat is connected with described free cylinder chain permanent seat, and the piston rod in wherein said free lift oil tank is connected with the described sprocket wheel that freely hoists through described free cylinder permanent seat.
Particularly, the bottom of described second door frame is provided with outer crossbeam, and wherein said outer crossbeam comprises: body, and described body and described first crossbeam are spaced apart from each other in the longitudinal direction; With two connecting portions, described two connecting portions are located at the two ends, left and right of described body respectively, and wherein said body is connected to described second door frame by described two connecting portions.Thus, installation interference problem is avoided.
Further, two described connecting portions to be bent towards the direction of described second door frame by the two ends, left and right of described body respectively and form.
Fork truck according to a second aspect of the present invention, comprises the door frame assembly for fork truck according to a first aspect of the present invention.
According to fork truck of the present invention, by arranging the door frame assembly for fork truck of above-mentioned first aspect, thus improve the overall performance of fork truck.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1-Fig. 4 is the block diagram of all angles of the door frame assembly for fork truck according to the embodiment of the present invention;
Fig. 5 is the block diagram of the oil pipe shown in Fig. 1, free lifting chain wheel assembly and the chain that freely hoists;
Fig. 6 is the A portion enlarged drawing that Fig. 5 centre circle shows;
Fig. 7 is the block diagram of freely hoist chain and the fabricated section shown in Fig. 5;
Fig. 8 is the front view of freely hoist chain and the fabricated section shown in Fig. 7;
Fig. 9 is the right elevation of freely hoist chain and the fabricated section shown in Fig. 7;
Figure 10 is the upward view of freely hoist chain and the fabricated section shown in Fig. 7;
Figure 11 is the front view of the fabricated section shown in Figure 10;
Figure 12 is the left view of the fabricated section shown in Figure 10;
Figure 13 is the upward view of the fabricated section shown in Figure 10;
Figure 14 is the block diagram of the first door frame shown in Fig. 1 and free cylinder chain permanent seat;
Figure 15-Figure 18 is the block diagram of all angles of the free lift oil tank shown in Fig. 1, free cylinder chain permanent seat and free cylinder permanent seat;
Figure 19 is the block diagram of the free cylinder permanent seat shown in Figure 18;
Figure 20 is the front view of the free cylinder permanent seat shown in Figure 19;
Figure 21 is the birds-eye view of the free cylinder permanent seat shown in Figure 19;
Figure 22 is the upward view of the free cylinder permanent seat shown in Figure 19;
Figure 23 is the right elevation of the free cylinder permanent seat shown in Figure 19;
Figure 24 is the left view of the free cylinder permanent seat shown in Figure 19;
Figure 25 is the exploded view of the free lift oil tank shown in Fig. 1, mounting blocks, first crossbeam and the first door frame;
Figure 26 is the B portion enlarged drawing that Figure 25 centre circle shows;
Figure 27 is the free lift oil tank shown in Figure 25, mounting blocks, first crossbeam be connected with the first door frame after block diagram;
Figure 28 is the C portion enlarged drawing that Figure 27 centre circle shows;
Figure 29 is the free lift oil tank shown in Figure 27, mounting blocks, first crossbeam be connected with the first door frame after front view;
Figure 30 is the free lift oil tank shown in Figure 27, mounting blocks, first crossbeam be connected with the first door frame after birds-eye view;
Figure 31 is the birds-eye view of the door frame assembly shown in Fig. 1.
Reference numeral:
100: door frame assembly;
11: the first door frames; The column plate of 111: the first door frames; 112: rear connecting panel;
113: first crossbeam; 114: mounting groove;
12: the second door frames; The column plate of 121: the second door frames;
122: second cross beam; 1221: body; 1222: two connecting portions;
13: the three door frames; The column plate of 131: the three door frames; 132: dump ram connecting panel; 1321: fuel feeding interface;
113: oil pipe guide wheel;
2: free lift oil tank; 21: stage portion; 22: piston rod; 23: the second auxiliary sections;
3: free lifting chain wheel assembly; 31: freely hoist sprocket wheel; 32: firm banking; 33: two side plates;
34: rotating shaft; 35: oil pipe baffle plate;
4: freely hoist chain; 41: the first chain links; 42: the second chain links; 43: bearing pin;
5: fabricated section; 51: adapter plate; 52: connecting panel; 53: freely hoist chain connecting bore;
6: oil pipe;
7: goods shelf; 71: pallet fork;
8: dump ram;
9: free cylinder chain permanent seat;
91: freely hoist sprocket wheel connecting portion; 912: connecting bore; 913: freely hoist chain joint pin;
92: door frame connecting portion; 921: the first side plates; 922: the second side plates;
93: oil pipe connecting portion;
10: free cylinder permanent seat; 101: perforation; 102: recess; 103: relief portion;
104: fixed part; 105: the first fixed orifices;
20: mounting blocks; 201: the first auxiliary sections; 202: mating groove.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The door frame assembly 100 for fork truck (scheming not shown) of embodiment is according to a first aspect of the present invention described below with reference to Fig. 1-Figure 31.
The door frame assembly 100 for fork truck of embodiment according to a first aspect of the present invention, wherein, door frame assembly 100 can be secondary gantry assembly, and now the first door frame 11 can be understood as the inner upright mounting of secondary gantry assembly, and the second door frame 12 can be understood as the outer mast of secondary gantry assembly.Certainly, those skilled in the art are appreciated that, according to the door frame assembly that door frame assembly 100 of the present invention can also be other type, such as three grades of door frame assemblies etc., when door frame assembly 100 is three grades of door frame assemblies, first door frame 11 can be understood as the inner upright mounting of three grades of door frame assemblies, and the second door frame 12 can be understood as the middle door frame of three grades of door frame assemblies, and three grades of door frame assemblies also comprise outer mast, hereinafter the outer mast of three grades of door frame assemblies are referred to as the 3rd door frame 13.In description below the application, be that three grades of door frame assemblies are described for door frame assembly 100.
With reference to Fig. 1-Fig. 4 composition graphs 6 and Fig. 7, door frame assembly 100 comprises: the first door frame 11, second door frame 12, the 3rd door frame 13, free lift oil tank 2, freely hoist sprocket wheel 31, freely to hoist chain 4, fabricated section 5 and oil pipe 6.Wherein, first door frame 11 is located at the inner side of the second door frame 12, second door frame 12 is located at the inner side of the 3rd door frame 13, free lift oil tank 2 is located at the inner side of the first door frame 11, the sprocket wheel 31 that freely hoists is located at the top of free lift oil tank 2, and the sprocket wheel 31 that freely hoists is driven by free lift oil tank 2 and can move up and down relative to the first door frame 11, chain 4 winding that freely hoists freely is hoisting on sprocket wheel 31.Alternatively, free lift oil tank 2 is two, the setting and two free lift oil tanks about 2 are spaced apart from each other.Certainly, free lift oil tank 2 also can be one, and is arranged in the center of the first door frame 11.Here, it should be noted that, " interior " can be understood as the direction towards the first door frame 11 center, and its opposite sense is defined as " outward ", namely away from the direction at the first door frame 11 center.
With reference to Fig. 1-Fig. 4 and in conjunction with Figure 31, 3rd door frame 13, the layout of the first door frame 11 and the second door frame 12 is CLL type, nested on first door frame 11 goods shelf 7 is installed, goods shelf 7 is provided with coupling type pallet fork 71 (for convenience of description below, be called for short pallet fork 71), pallet fork 71 can be arranged telescopic lever for the spacing in the lateral direction regulating pallet fork 71, two ends inside first door frame 11 are separately installed with two free lift oil tanks 2, two free lift oil tanks 2 are arranged in the inner side of the column plate 111 of two the first door frames respectively symmetrically, the bottom of free lift oil tank 2 is fixed on the first crossbeam 113 of the first door frame 11 bottom, the top of free lift oil tank 2 is provided with free lifting chain wheel assembly 3 (will describe in detail hereinafter), free lifting chain wheel assembly 3 is provided with the chain 4 that freely hoists, freely hoist one end of chain 4 is fixed on goods shelf 7, the other end is fixed together by freely to hoist chain joint pin 913 and the first door frame 11, the chain joint pin 913 that freely hoists can have the function regulating chain 4 length that freely hoists.Wherein, " CLL type " refers to the first door frame 11, second door frame 12 and the projection of shape of the 3rd door frame 13 in horizontal surface.Certainly, the layout of the first door frame 11, second door frame 12 and the 3rd door frame 13 can also be other types.
Further, see figures.1.and.2, second door frame 12 is located at the outside of the first door frame 11, and the top of the second door frame 12 is provided with limit lifting chain wheel assembly permanent seat, the rear side of the column plate 121 of two the second door frames is symmetrically installed with two limit lift oil tanks, the bottom of limit lift oil tank is fixed on the 3rd door frame 13, top is fixed with limit lifting chain wheel assembly, limit lifting chain wheel assembly is connected with the limit lifting chain wheel assembly permanent seat on the second door frame 12, limit lifting chain wheel assembly is provided with limit to hoist chain, while hoist, one end of chain is connected on the first door frame 11, the other end is fixedly linked by hoist chain joint pin and the 3rd door frame 13 of limit, while hoist, chain joint pin has adjusting edge and to hoist the function of chain length.
Again further, with reference to Fig. 3 and Fig. 4, the outside of the column plate 131 of two the 3rd door frames is provided with dump ram connecting panel 132, dump ram connecting panel 132 is connected with dump ram 8, whole door frame assembly 100 is rotatably connected on fork truck vehicle body by dump ram 8, when dump ram 8 works, door frame assembly 100 can be realized in the tilted rotation of fixed angle.
Alternatively, with reference to Fig. 1, the column plate 111 of column plate 131, first door frame and the column plate 121 of the second door frame of the 3rd door frame are made by GB hot-rolled steel channel, thus through complicated technologies such as later stage welding processing, need not simplify generating process.
The working process of fork truck is briefly described referring to Fig. 1-Fig. 4:
When distinguishing injection liquid force feed in free lift oil tank 2 and limit lift oil tank, cross-sectional area due to free lift oil tank 2 is greater than the cross-sectional area of limit lift oil tank, and the heavy burden of free lift oil tank 2 is less, thus free lift oil tank 2 comparatively limit lift oil tank first hoist, that is, the piston rod 22 of free lift oil tank 2 first stretches out, free lifting chain wheel assembly 3 is driven to rise, because the one end be connected with the first door frame 11 of the chain 4 that freely hoists is relative to the barrel transfixion of free lift oil tank 2, therefore the chain 4 that freely hoists drives goods shelf 7 to hoist, when free lift oil tank 2 stroke is walked on earth, the piston of limit lift oil tank starts to stretch out, the second door frame 12 and limit lifting chain wheel assembly is driven to rise, simultaneously limit lifting chain wheel assembly drives the limit chain that hoists to rise, while hoist, chain drives the first door frame 11 to rise by one end that it is connected with the first door frame 11, because free lift oil tank 2 is fixed on the first door frame 11, therefore free lift oil tank 2, goods shelf 7 and pallet fork 71 rise together along with the first door frame 11, until the stroke of limit lift oil tank is covered.Now, the second door frame 12 is positioned at the end position on the 3rd door frame 13, and the first door frame 11 is positioned at the end position on the second door frame 12, and goods shelf 7 is positioned at the end position on the first door frame 11.
When oil pressure in the free lift oil tank 2 of venting and limit lift oil tank, second door frame 12, first door frame 11, goods shelf 7, pallet fork 71 start because deadweight declines, the lift oil tank that wherein pressure is large first declines, namely the second door frame 12, first door frame 11 first declines together, then after extreme lower position is down to by the second door frame 12, first door frame 11 (i.e. the minimum stroke place of limit lift oil tank), goods shelf 7 and pallet fork 71 start to decline, final goods shelf 7 all drops to extreme lower position, i.e. pallet fork 71 and earth surface with pallet fork 71.
Thus, two free lift oil tanks 2 are adopted symmetrical mode, is close to the both sides of the column plate 111 of the first door frame being arranged on three grades of door frame assemblies, while improving the crossing ability of car load, provide more wide medium field-of-view, more meet ergonomics and man-machine interaction, greatly improve the work efficiency of chaufeur, work comfort degree and job security.In addition, because the structure of two free lift oil tanks 2 is more stable, the abnormal sound that hoists is eliminated, and improve the stressing conditions of free lift oil tank 2 and goods shelf 7 etc. simultaneously, extend the service life of fork truck, and the structure of this door frame assembly 100 is simple, be convenient to processing, easily realize industrialization.In brief, the structure of this door frame assembly 100 is simple, compact and reasonable, and broad view, stability is high.
Further, with reference to Fig. 5 and Fig. 6, fabricated section 5 is located at the side away from the sprocket wheel 31 that freely hoists of the chain 4 (such as BL834 chain) that freely hoists, and the side do not contacted with the sprocket wheel 31 that freely hoists of the chain 4 that namely freely hoists, oil pipe 6 winding is on fabricated section 5.With reference to Fig. 3, the both sides at the top of the 3rd door frame 13 are respectively equipped with oil pipe guide wheel 133, the both sides of dump ram connecting panel 132 are respectively equipped with fuel feeding interface 1321, two groups, left and right oil pipe 6 is located at the both sides of the 3rd door frame 13 respectively, one end of each oil pipe 6 is all plugged on corresponding fuel feeding interface 1321, the other end is walked around corresponding oil pipe guide wheel 133 and is naturally drooped, oil pipe 6 hangs down into the bottom place upwards sinuous extension again close to the 3rd door frame 13, oil pipe 6 extend to close to lift oil tank freely hoist sprocket wheel 31 time, take on the fabricated section 5 that is attached to and freely hoists on chain 4, oil pipe 6 extends in the lump along with the bearing of trend of the chain 4 that freely hoists, until the other end is connected to the accessory (scheming not shown) etc. of fork truck, when freely hoist chain 4 along with freely hoist hoisting of sprocket wheel 31 and move time, oil pipe 6 is synchronized with the movement with the chain 4 that freely hoists.Wherein, " accessory of fork truck " is well known to those skilled in the art, and no longer describes in detail here.
Like this, by oil pipe 6 winding is freely being hoisted on chain 4, and ensure that oil pipe 6 is synchronized with the movement with the chain 4 that freely hoists, thus the installation site of oil pipe 6 is overlapped all in the longitudinal direction with the chain 4 that freely hoists, free lift oil tank 2, even can overlap in the longitudinal direction with the column plate 111 of the first door frame, make whole door frame assembly 100 seem succinct, generous.In addition, freely hoist on chain 4 by adopting fabricated section 5 to be limited to by oil pipe 6, thus eliminate a large amount of oil pipe clamps and oil pipe roller, make the structure of door frame more succinct, compact, orderly.
According to the door frame assembly 100 of the embodiment of the present invention, by oil pipe 6 winding is freely being hoisted on chain 4, thus eliminate a large amount of oil pipe clamps and oil pipe roller, make the structure of door frame more succinct, compact, orderly, whole door frame assembly 100 is made to seem succinct, generous, widen the visual field of chaufeur, in addition, the structure of fabricated section 5 has been simple, be convenient to assembling and produce.
In one embodiment of the invention, with reference to Fig. 7-Figure 13, the chain 4 that freely hoists comprises the multiple chain links be connected successively, and fabricated section 5 comprises the multiple adapter plates 51 be spaced apart from each other, and every two pitch chain joints are provided with at least one adapter plate 51.Particularly, every two pitch chain joints comprise: first chain link 41 be connected with each other and second chain link 42, first chain link 41 is identical with the shape of the second chain link 42, and the first chain link 41 and the second chain link 42 are formed with two holes run through respectively, every two Kong Jun are spaced apart along the length direction of corresponding chain link, multiple first chain link 41 joins end to end successively and is arranged into row, multiple second chain link 42 joins end to end successively and is arranged into row, multiple second chain link 42 is located at the inner side of multiple first chain link 41 and staggered with multiple first chain link 41, hole one_to_one corresponding on hole on second chain link 42 and the first chain link 41, another row first chain link 41 and another row second chain link 42 is obtained about the bearing of trend mirror image along multiple first chain link 41 or the second chain link 42, then multiple bearing pin 43 is adopted accordingly through two row first chain links 41 and hole all relative on two row second chain links 42, obtain the complete chain 4 that freely hoists.
With reference to Fig. 7 and Figure 10, adapter plate 51 is roughly plate shape, and the side away from the sprocket wheel 31 that freely hoists being located at the chain 4 that freely hoists on the surface.Alternatively, the length of adapter plate 51 is equal with the length of the first chain link 41 or the second chain link 42, and the width of adapter plate 51 is equal with the distance between two row first chain links 41, thus often saves on the first chain link 41 and can be provided with an adapter plate 51.Certainly, the present invention is not limited thereto, every two pitch chain joints can also be provided with two or more adapter plates 51, and now the length of adapter plate 51 is less than the length of the first chain link 41.
Further, the two ends of the Width along the chain 4 that freely hoists of each adapter plate 51 bend towards the direction away from sprocket wheel 31 center that freely hoists.As shown in figs. 6 and 10, the two ends relative with two row first chain links 41 of adapter plate 51 extend towards the direction away from sprocket wheel 31 center that freely hoists, thus the shape of cross section of adapter plate 51 is roughly U-shaped, for accommodation and support oil pipe 6, oil pipe 6 is avoided to deviate from adapter plate 51.Wherein, the inside face of adapter plate 51 is smooth surface, and the inside face of such as adapter plate 51 can be formed by connecting by arc surface transition.Thus, the inwall scratching of adapter plate 51 can be avoided, damage oil pipe 6.Here, it should be noted that, can according to the shape of oil pipe 6, quantity specific design adapter plate 51, such as in the example in figure 7, adapter plate 51 can be provided with two oil pipes 6 abreast, and now the shape of cross section of adapter plate 51 is roughly U-shaped.
Further, the side at the center of the contiguous sprocket wheel 31 that freely hoists of each adapter plate 51 is provided with connecting panel 52, and adapter plate 51 is connected to corresponding chain link by connecting panel 52.With reference to Figure 13-Figure 12, fabricated section 5 comprises further: connecting panel 52, connecting panel 52 extends from the centerline of a side surface of the contiguous chain 4 that freely hoists of adapter plate 51 towards the center position of the sprocket wheel 31 that freely hoists, now, the surperficial place plane orthogonal contacted with the chain 4 that freely hoists of connecting panel 52 place plane and adapter plate 51, alternatively, the length of connecting panel 52 is equal with the length of the first chain link 41, shape is substantially identical, connecting panel 52 is formed with the chain connecting bore 53 that freely hoists that two run through it, the hole one_to_one corresponding freely hoisted on chain connecting bore 53 and the first chain link 41, thus multiple connecting panel 52 can be extend between two row second chain links 42 and with multiple first chain link 41 one_to_one corresponding, pass through bearing pin 43 again by multiple connecting panel 52, two row second chain links 42 and two row first chain links 41 link into an integrated entity.Thus, every two joint the first chain links 41 are fixed with a fabricated section 5 respectively.
In one embodiment of the invention, the top of free lift oil tank 2 is provided with free cylinder chain permanent seat 9, and free cylinder chain permanent seat 9 is connected on the inner surface of the first door frame 11.With reference to Figure 14-Figure 18 composition graphs 6, free cylinder chain permanent seat 9 comprises: oil pipe connecting portion 93, freely to hoist sprocket wheel connecting portion 91 and door frame connecting portion 92, wherein, oil pipe connecting portion 93 is fixed on and freely hoists on sprocket wheel connecting portion 91, the sprocket wheel connecting portion 91 that freely hoists is one-body molded with door frame connecting portion 92, door frame connecting portion 92 is welded on the column plate 111 of the first door frame, thus free cylinder chain permanent seat 9 entirety can be fixed on the first door frame 11.
With reference to Figure 14 and Figure 15, door frame connecting portion 92 is roughly L-type, and extend along the vertical direction, specifically comprise the first side plate 921 and the second side plate 922, first side plate 921 extends in left-right direction, second side plate 922 extends along the longitudinal direction, one end away from the first door frame 11 center of first side plate 921 is connected with the rear end of the second side plate 922, the column plate 111 of the first door frame of both sides has respectively the rear connecting panel 112 extended internally, after two, connecting panel 112 is symmetrically arranged, the front surface of the first side plate 921 is connected with the rear surface of corresponding rear connecting panel 112, the outside face of the second side plate 922 is connected with the inside face of corresponding rear connecting panel 112, by modes such as welding, door frame connecting portion 92 is welded on the corresponding rear connecting panel 112 of door frame securely.Thus, by door frame connecting portion 92 is arranged l-shaped, effectively can increase bonding area, improve the Joint strenght of the first door frame 11 and door frame connecting portion 92, and save the material of door frame connecting portion 92 simultaneously, reduce taking up room of door frame connecting portion 92, make the structure of door frame assembly 100 compacter, the visual field is openr.
With reference to Fig. 6 and Figure 15, the one end of the chain 4 that freely hoists is fixed on the sprocket wheel connecting portion 91 that freely hoists to be connected with the first door frame 11.Particularly, the sprocket wheel connecting portion 91 that freely hoists is located at the inner side of corresponding door frame connecting portion 92, and extend along the longitudinal direction, freely hoist on sprocket wheel connecting portion 91 and be formed with the connecting bore 913 run through along the vertical direction, freely hoist one end of chain 4 is provided with the chain joint pin 913 that freely hoists of adjustable chain 4 length that freely hoists, freely hoist chain joint pin 913 along the vertical direction through connecting bore 912, and be limited in connecting bore 912, thus this end of the chain 4 that makes freely to hoist is fixed on and freely hoists on sprocket wheel connecting portion 91, again because the sprocket wheel connecting portion 91 that freely hoists is one-body molded with door frame connecting portion 92, and door frame connecting portion 92 is fixed on the first door frame 11, thus the one end of the chain 4 that freely hoists is fixed on the first door frame 11 indirectly.
With reference to Fig. 6, oil pipe connecting portion 93 is formed with the through hole run through, oil pipe 6 is adapted to pass through through hole.Particularly, oil pipe connecting portion 93 can be fastened on by threaded fasteners and corresponding freely hoist on sprocket wheel connecting portion 91 rear surface, each oil pipe connecting portion 93 is formed with at least one through hole run through along the vertical direction, the quantity of through hole is identical with the quantity of oil pipe 6 set on each chain 4 that freely hoists, during installation, first by the through hole of oil pipe 6 through correspondence, then oil pipe connecting portion 93 is fixed on the rear side of the sprocket wheel connecting portion 91 that freely hoists, oil pipe 6 is made to be limited at the rear side of each free cylinder chain permanent seat 9, because free cylinder chain permanent seat 9 is positioned at first door frame 11 left and right sides, thus oil pipe 6 is limited at the left and right sides of the first door frame 11, efficiently avoid the problem that oil pipe 6 blocks the visual field, make door frame assembly 100 cleaner and tidier, compact, generous.
Further, door frame assembly 100 comprises further: free cylinder permanent seat 10, free cylinder permanent seat 10 is located at the top of free lift oil tank 2, free cylinder permanent seat 10 is connected with free cylinder chain permanent seat 9, and the piston rod 22 wherein in free lift oil tank 2 is connected with the sprocket wheel 31 that freely hoists through free cylinder permanent seat 10.With reference to Figure 10 and in conjunction with Figure 19 and Figure 25, free cylinder permanent seat 10 on even keel is located at and corresponding freely hoists on sprocket wheel connecting portion 91, and extend along the longitudinal direction, the front portion of free cylinder permanent seat 10 is formed with the perforation 101 run through along the vertical direction, the top of free lift oil tank 2 is formed with the stage portion 21 of cross-sectional area anticlimax, the bottom of perforation 101 is formed with the recess 102 suitable with stage portion 21, recess 102 is formed along the radially outward recessed of perforation 101 by the perisporium of perforation 101 bottom, free cylinder permanent seat 10 is located at the top of corresponding free lift oil tank 2, and stage portion 21 is engaged in corresponding recess 102, the lower surface of free cylinder permanent seat 10 is only supported mutually with the lower surface of stage portion 21, thus free cylinder permanent seat 10 can limit degree of freedom and the degree of freedom upwards of free lift oil tank 2 circumference.Thus, free lift oil tank 2 stability can be ensured, avoid the problems such as free lift oil tank 2 rocks.
Further, with reference to Fig. 6, Figure 15 and Figure 25, piston rod 22 stretches out from the center of the upper surface of stage portion 21, after free lift oil tank 2 is seated with free cylinder permanent seat 10, the piston rod 22 of free lift oil tank 2 is through corresponding perforation 101, and can free-extension along the vertical direction, free lifting chain wheel assembly 3 is arranged on the top of free cylinder permanent seat 10, and is fixedly connected with the top of piston rod 22.
Particularly, with reference to Fig. 6, free lifting chain wheel assembly 3 comprises: the sprocket wheel 31 that freely hoists, firm banking 32 and two side plates 33, two side plates 33 extend straight up from the both sides of firm banking 32 respectively, the sprocket wheel 31 that freely hoists is located between two side plates 33 vertically, and formed by the rotating shaft that extends in left-right direction 34 and left side plate and be rotatably connected, firm banking 32 is located at the top of piston rod 22, and can be fixed together with piston rod 22 by threaded fasteners etc.Thus, when piston rod about 22 is flexible, piston rod 22 can drive firm banking 32 up-and-down movement in the lump, and two side plates 33 are followed firm banking 32 and drive free lifting chain wheel assembly 3 up-and-down movement in the lump, and the sprocket wheel 31 that simultaneously freely hoists can freely rotate between two side plates 33.Thus, adopt the sprocket wheel connecting portion 91 that freely hoists to connect free lifting chain wheel assembly 3, thus improve the structural stability of free lifting chain wheel assembly 3, reduce technological requirement, improve Joint strenght.
Alternatively, with reference to Fig. 6 and Figure 19, the rear side of free cylinder permanent seat 10 is formed with relief portion 103, relief portion 103 forms by the center of free cylinder permanent seat 10 rear surface is recessed forward, part free cylinder permanent seat 10 being positioned at relief portion 103 both sides is two fixed parts 104, two fixed parts 104 are all formed with the first fixed orifice 105 run through along the vertical direction, the corresponding sprocket wheel connecting portion 91 that freely hoists is formed with the second corresponding fixed orifice, first fixed orifice 105 and the second fixed orifice one_to_one corresponding, thus threaded fasteners (such as screw or bolt etc.) can be adopted to be fixed on by free cylinder permanent seat 10 freely hoist on sprocket wheel connecting portion 91, after free cylinder permanent seat 10 to coordinate with the sprocket wheel connecting portion 91 that freely hoists and puts in place, relief portion 103 and freely the chain joint pin 913 that freely hoists hoisted on sprocket wheel connecting portion 91 are dodged out, thus effectively avoid free cylinder permanent seat 10 to interfere the chain 4 that freely hoists, particular avoid the installation question that free cylinder permanent seat 10 affects the chain joint pin 913 that freely hoists, and the overall dimensions of free cylinder chain permanent seat 9 and free cylinder permanent seat 10 can be reduced further, make the structure of door frame assembly 100 compacter, the visual field is broader.
Further, door frame assembly comprises further: oil pipe baffle plate 35, oil pipe baffle plate 35 is formed as inverted U-shaped shape, and the lower end of oil pipe baffle plate 35 is connected to the top of the sprocket wheel 31 that freely hoists, and the roof of oil pipe baffle plate 35 is spaced apart from each other with the diapire of the sprocket wheel 31 that freely hoists.As shown in Figure 6, oil pipe baffle plate 35 is connected between the top of two side plates 33, and the diapire of the roof of oil pipe baffle plate 35 and free lifting chain wheel assembly 3 is spaced apart in the vertical direction, when the chain 4 that freely hoists, adapter plate 51, free lifting chain wheel assembly 3, free cylinder permanent seat 10, after free cylinder chain permanent seat 9 and oil pipe 6 are seated simultaneously, oil pipe 6 extend between adapter plate 51 and oil pipe baffle plate 35, thus ensure that oil pipe 6 can be attached on the surface of adapter plate 51 better, oil pipe 6 is avoided to split away off from the top of free lifting chain wheel assembly 3, be separated with adapter plate 51, and then can oil pipe 6 be limited on adapter plate 51 securely, oil pipe 6 is avoided to block the visual field further, ensure that door frame assembly 100 is clean and tidy, generous.
Further, the bottom of the first door frame 11 is provided with first crossbeam 113, and first crossbeam 113 is provided with two mounting blocks 20 be spaced apart from each other, and the lower end of each free lift oil tank 2 is connected on corresponding mounting blocks 20.With reference to Figure 17, Figure 25, Figure 26 and Figure 31, first crossbeam 113 is roughly the flat board of vertically setting and extends in left-right direction, its two ends, left and right are connected with the lower end of the rear connecting panel 112 of the column plate 111 of the first door frame of both sides respectively, free cylinder permanent seat 10 can be welded on first crossbeam 113 by the mode of welding by mounting blocks 20 securely, mounting blocks 20 is formed with the first recessed auxiliary section 201 downwards, the shape of cross section of the first auxiliary section 201 is non-circular, correspondingly, the bottom of free lift oil tank 2 is formed with second auxiliary section 23 of protruding downwards, the shape of the second auxiliary section 23 and the first auxiliary section 201 is suitable, free lift oil tank 2 is assembled to after on mounting blocks 20, second auxiliary section 23 is engaged in the first auxiliary section 201, shape due to cooperation place is non-circular, thus free lift oil tank 2 can not rotate relative to mounting blocks 20.
Like this, by adopting mounting blocks 20, the bottom of free lift oil tank 2 is fixed on the first crossbeam 113 of the first door frame 11, and by adopting free cylinder permanent seat 10 to be fixed on the first door frame 11 by the top of free lift oil tank 2, thus mounting blocks 20 and free cylinder permanent seat 10 are applied to free lift oil tank 2 pressure up and down simultaneously, so that free lift oil tank 2 is compressed, fixed.Thus, the spacing of two free lift oil tanks 2 is larger, and improves the structural stability of free lift oil tank 2.
With reference to Figure 26 and Figure 28, mounting blocks 20 is substantially cut by cylinder and forms, each mounting blocks 20 is formed with respectively the mating groove 202 that cross-sectional plane is L-type, mating groove 202 runs through the bottom on rear side of mounting blocks 20 in left-right direction, after mounting blocks 20 and first crossbeam 113 are seated, the diapire of mating groove 202 is connected with the upper surface of first crossbeam 113, the sidewall of mating groove 202 is connected with the front surface of first crossbeam 113, further, after mounting blocks 20 and first crossbeam 113 are seated, adopt parallel with first crossbeam 113 longitudinal plane of symmetry, and any one the plane shear mounting blocks 20 between the longitudinal plane of symmetry and first crossbeam 113 rear surface of first crossbeam 113, the part being positioned at this planar back side of mounting blocks 20 is given up, thus ensure that the rear surface of mounting blocks 20 is positioned at the front of first crossbeam 113 rear surface.
Again further, with reference to Figure 26, Figure 28 and Figure 31, the front side at the two ends of first crossbeam 113 is formed with mounting groove 114 respectively, the cross-sectional plane of mounting groove 114 is roughly L shape, and the left-front corner of the first crossbeam 113 run through along the vertical direction respectively and right front angle, thus the rear side that first crossbeam 113 can be connected between the rear connecting panel 112 of column plate 111 of the first door frame in left side and the rear connecting panel 112 of the column plate 111 of first door frame on right side, the rear connecting panel 112 of both sides is made to be each defined in corresponding mounting groove 114, and then the mode passing through again to weld is by first crossbeam 113 and rear connecting panel 112 weld together.Thus, by adopting joint welding to instead of butt weld for weld seam, reducing technology difficulty, and reducing tooling cost.In addition, the structure of mounting blocks 20 is simple, and convenient processing, yields is high.
As shown in figure 31, when door frame assembly 100 is three grades of door frame assemblies, the bottom of the second door frame 12 is provided with second cross beam 122, second cross beam 122 comprises: body 1221 and two connecting portions 1222, body 1221 and first crossbeam 113 are spaced apart from each other in the longitudinal direction, two connecting portions 1222 are located at the two ends, left and right of body 1221 respectively, and wherein body 1221 is connected to the second door frame 12 by two connecting portions 1222.Alternatively, two connecting portions 1222 to be bent towards the direction of the 3rd door frame 13 by the two ends, left and right of body 1221 respectively and form.
Particularly, with reference to Figure 30 and Figure 31, the body 1221 of second cross beam 122 is the flat board of vertically setting and extends in left-right direction, connecting portion 1222 on the left of body 1221 extends from the left end of body 1221 to left front, and be connected with the lower end of the column plate 121 of second door frame in left side, connecting portion 1222 on the right side of body 1221 extends from the right-hand member of body 1221 to right front, and be connected with the lower end of the column plate 121 of second door frame on right side, as described above, first crossbeam 113 is roughly the flat board of vertically setting and extends in left-right direction, wherein, left end and the first crossbeam 113 of the connecting portion 1222 on the left of second cross beam 122 are positioned at same plane, right-hand member and the first crossbeam 113 of the connecting portion 1222 on the right side of second cross beam 122 are positioned at same plane, due to the connecting portion 1222 on the right side of the left end of the connecting portion 1222 of body 1221 on the left of second cross beam 122 and second cross beam 122 right-hand member between rear side, thus body 1221 is positioned at the rear side of first crossbeam 113, namely be positioned at the rear side of the mounting blocks 20 of free lift oil tank 2 lower end, namely second cross beam 122 does not overlap with the projection of mounting blocks 20 in horizontal surface.Thus, Assembly Interference problem is avoided.
Particularly, when assembling door frame assembly 100, first second cross beam 122 and first crossbeam 113 are arranged on respectively on the second door frame 12 and the first door frame 11, and then the roller of the first door frame 11 lower end is installed, so that the first door frame 11 is linked together by roller and the second door frame 12, when the roller of installation first door frame 11 lower end, need the height the first door frame 11 being continued decline about 110mm relative to work extreme lower position, because second cross beam 122 is positioned at the rear side of the rear side of first crossbeam 113 and the mounting blocks 20 of free lift oil tank 2 lower end, therefore second cross beam 122 and mounting blocks 20 do not interfere.Thus, improve assembling safety factor, reduce technique and assembly difficulty.
The fork truck of embodiment according to a second aspect of the present invention, comprises the door frame assembly 100 for fork truck according to the above-mentioned first aspect embodiment of the present invention.
According to the fork truck of the embodiment of the present invention, by arranging the door frame assembly 100 for fork truck of above-mentioned first aspect embodiment, thus improve the overall performance of fork truck.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Claims (13)
1., for a door frame assembly for fork truck, it is characterized in that, comprising:
First door frame;
Second door frame, described second door frame is located at the outside of described first door frame;
Free lift oil tank, described free lift oil tank is located at the inner side of described first door frame;
Freely hoist sprocket wheel, and the described sprocket wheel that freely hoists is located at the top of described free lift oil tank, and the described sprocket wheel that freely hoists can be moved up and down relative to described first door frame by described free lift oil tank driving;
Freely hoist chain, and the described chain winding that freely hoists freely hoists on sprocket wheel described;
Fabricated section, described fabricated section is located at the side away from the described sprocket wheel that freely hoists of the described chain that freely hoists; And
Oil pipe, described oil pipe winding is on described fabricated section.
2. the door frame assembly for fork truck according to claim 1, it is characterized in that, the described chain that freely hoists comprises the multiple chain links be connected successively, and described fabricated section comprises the multiple adapter plates be spaced apart from each other, and the described chain link of every two joint is provided with adapter plate described at least one.
3. the door frame assembly for fork truck according to claim 2, is characterized in that, the two ends of the Width along the described chain that freely hoists of each described adapter plate bend towards the direction away from the described centre of sprocket that freely hoists.
4. the door frame assembly for fork truck according to claim 3, is characterized in that, the side at the center of the described sprocket wheel that freely hoists of the vicinity of each described adapter plate is provided with connecting panel, and described adapter plate is connected to corresponding described chain link by described connecting panel.
5. the door frame assembly for fork truck according to claim 1, is characterized in that, comprise further:
Oil pipe baffle plate, described oil pipe baffle plate is formed as inverted U-shaped shape, and the lower end of described oil pipe baffle plate is connected to the top of the described sprocket wheel that freely hoists, and the roof of described oil pipe baffle plate and the described diapire freely hoisting sprocket wheel are spaced apart from each other.
6. the door frame assembly for fork truck according to claim 1, it is characterized in that, the top of described free lift oil tank is provided with free cylinder chain permanent seat, described free cylinder chain permanent seat is connected on the inner surface of described first door frame, and wherein said one end freely hoisting chain is fixed on described free cylinder chain permanent seat.
7. the door frame assembly for fork truck according to claim 6, is characterized in that, described free cylinder chain permanent seat is formed with the through hole run through, and wherein said oil pipe is adapted to pass through described through hole.
8. the door frame assembly for fork truck according to claim 6, is characterized in that, described free lift oil tank is two, and the setting that is spaced apart from each other about described two free lift oil tanks.
9. the door frame assembly for fork truck according to claim 8, it is characterized in that, the bottom of described first door frame is provided with first crossbeam, and described first crossbeam is provided with two mounting blocks be spaced apart from each other, and the lower end of each described free lift oil tank is connected on corresponding described mounting blocks.
10. the door frame assembly for fork truck according to claim 6, is characterized in that, comprise further:
Free cylinder permanent seat, described free cylinder permanent seat is located at the top of described free lift oil tank, described free cylinder permanent seat is connected with described free cylinder chain permanent seat, and the piston rod in wherein said free lift oil tank is connected with the described sprocket wheel that freely hoists through described free cylinder permanent seat.
11. door frame assemblies for fork truck according to any one of claim 1-10, it is characterized in that, the bottom of described second door frame is provided with outer crossbeam, and wherein said outer crossbeam comprises:
Body, described body and described first crossbeam are spaced apart from each other in the longitudinal direction; With
Two connecting portions, described two connecting portions are located at the two ends, left and right of described body respectively, and wherein said body is connected to described second door frame by described two connecting portions.
The 12. door frame assemblies for fork truck according to claim 11, is characterized in that, two described connecting portions to be bent towards the direction of described second door frame by the two ends, left and right of described body respectively and form.
13. 1 kinds of fork trucks, is characterized in that, comprise the door frame assembly for fork truck according to any one of claim 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410301648.2A CN104925705B (en) | 2014-06-27 | 2014-06-27 | For the door frame assembly of fork truck and the fork truck with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410301648.2A CN104925705B (en) | 2014-06-27 | 2014-06-27 | For the door frame assembly of fork truck and the fork truck with it |
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| CN104925705A true CN104925705A (en) | 2015-09-23 |
| CN104925705B CN104925705B (en) | 2016-11-23 |
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| CN201410301648.2A Active CN104925705B (en) | 2014-06-27 | 2014-06-27 | For the door frame assembly of fork truck and the fork truck with it |
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Cited By (3)
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| CN108823944A (en) * | 2018-07-02 | 2018-11-16 | 江苏湛德医疗用品有限公司 | A kind of nonwoven production process cutting device system |
| CN109205524A (en) * | 2018-09-30 | 2019-01-15 | 安徽合力股份有限公司 | A kind of forklift door frame assembly of high temperature-proof splash |
| CN113504047A (en) * | 2021-06-29 | 2021-10-15 | 洛阳摩科机械科技有限公司 | Simulation testing machine for forklift roller bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2964510T3 (en) * | 2021-01-29 | 2024-04-08 | L T E Lift Truck Equipment S P A | Load lifting device for a forklift |
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| CN113504047A (en) * | 2021-06-29 | 2021-10-15 | 洛阳摩科机械科技有限公司 | Simulation testing machine for forklift roller bearing |
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|---|---|
| CN104925705B (en) | 2016-11-23 |
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