CN1034800C - Chain wheel mounting structure in forklift - Google Patents
Chain wheel mounting structure in forklift Download PDFInfo
- Publication number
- CN1034800C CN1034800C CN93118946A CN93118946A CN1034800C CN 1034800 C CN1034800 C CN 1034800C CN 93118946 A CN93118946 A CN 93118946A CN 93118946 A CN93118946 A CN 93118946A CN 1034800 C CN1034800 C CN 1034800C
- Authority
- CN
- China
- Prior art keywords
- chain
- mounting structure
- rest pin
- chain wheel
- wheel mounting
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
The present invention relates to a chain wheel installing structure which is suitable for installing a chain wheel on a wheel carrier through a support pin in a rotatable mode. A connecting hole is horizontally formed on the wheel carrier and provided with a taper hole and a screw hole which are concentric, and the diameter of the screw hole is larger than that of the taper hole; in addition, one end of the support pin is provided with a taper part corresponding to the taper hole; the support pin is inserted into a protruding part at the end of the connecting hole and matched with the chain wheel in a rotatable mode; a support pin is axially pressed through a stop screw screwed in the screw hole to make the taper part and the taper hole tightly attached.
Description
The present invention relates to a kind of chain wheel mounting structure of fork truck, more particularly, is a kind of chain wheel mounting structure that improves the operating seat front visibility.
In common fork truck, use two sides of support structures shown in Figure 4 or cantilever beam structure shown in Figure 5 usually as the chain wheel mounting structure.In two sides of support structures shown in Figure 4, two couples of wheel carrier 24a are welded on chain beam 23 lower surfaces, the chain beam is connected with the piston rod 22 of right lift cylinder 21 with a left side, and the rest pin 25a of rotatable support one sprocket wheel 26 is contained in each among the wheel carrier 24a with the mode level that can therefrom pull out.This two sides of support structures for example is disclosed among the Japanese utility model application No.2-64590.
In addition, in cantilever beam structure shown in Figure 5, be welded on chain beam 23 lower surfaces with welding or at the fixing wheel carrier 24b with rest pin 25b of this place's global formation mode, the piston rod 22 of chain beam and left and right sides oil cylinder 21 interconnects.Then, a sprocket wheel 26 is installed in the rotating mode of relative rest pin 25b.This cantilever beam structure for example is disclosed among the Japanese patent application No.62-255395.
Yet, in the two sides of support structures situation, owing to two wheel carrier 24a to be arranged every centering, so, bigger from the distance L 1 at lift cylinder 21 row elevator chains 27 centers, so the chain pitch L2 between a left side and right elevator chain 27 diminishes.
In addition, in the situation of cantilever beam structure shown in Figure 5, the distance L 1 at 27 centers must be enough greatly from oil cylinder 21 to elevator chain, makes the sprocket wheel 26 can Assembly ﹠Disassembly with respect to rest pin 25.As a result, the chain pitch L2 between the left and right elevator chain 27 diminishes.
Especially, freely promote and the fork truck of semi-free lifting in, for promoting and put down the scope that load has single-degree-of-freedom L, and do not rise whole height of support, this just has a restriction, both wheel carrier 24a, 24b must be positioned at the lower surface of chain beam 23.So under a described two sides of support structures and a side bearing structure situation, elevator chain 27 is positioned at the inner side away from lift cylinder 21, and become an element that hinders the visual field.So, there is a problem, to compare with the fork truck of standard form, its front visibility has narrowed down, and in the standard form fork truck, by providing one to have the wheel carrier of rest pin inwardly in interior pillar rear surface, can make the position of elevator chain quite approach lift cylinder.
It should be noted that, when the rest pin 25a that considers the supporting structure of carrying row above two kinds pulls out convenience, require a loose cooperation being used on rest pin 25a that forms a parallel pin and the wheel carrier 24b to insert between the pin-and-hole of rest pin 25a.So, if this loose fit applications in a side bearing structure, forms part with respect to pin-and-hole bevelled rest pin 25a with pin-and-hole and contact, and stress concentration is in the part that may break.So,, be not used based on a side bearing structure of this fitting method owing to described intensity reason.
Owing to top problem, the purpose of this invention is to provide a kind of chain wheel mounting structure of fork truck, it has improved front visibility effectively.
In order to achieve the above object, the invention provides a kind of chain wheel mounting structure, mode by rest pin is contained in a sprocket wheel on the wheel carrier rotationally, comprise, the connecting bore that level forms on described wheel carrier, it has towards its terminal tapered a taper hole and a screw, and its diameter is greater than taper hole and concentric with taper hole; Described rest pin one end has a tapering, and is corresponding with described taper hole, and can insert described connecting bore, and terminal is stretched out, and is used for cooperating with described sprocket wheel rotationally; With a stopper bolt that can screw in described screw, be used for its tapering and described taper hole being fitted tightly axially pressing described rest pin.
In chain wheel mounting structure of the present invention, but the rest pin that is used for the rotating support sprocket wheel inserts the connecting bore of wheel carrier, is assembled on the wheel carrier by the screw that stopper bolt is screwed in connecting bore then.At this moment, because stopper bolt makes rest pin at axial compression, the mode with face-to-face contact is fixed in the taper hole in the tapering and make rest pin.So, even a side bearing structure also can guarantee desired intensity.In addition, from screw, take out after the stopper bolt, can make sprocket wheel approach the lift cylinder location, reduce distance therefrom from lift cylinder to the elevator chain center by bolster being pulled out connecting bore and it is taken off from wheel carrier, this means.
Fig. 1 is the cutaway view of fork truck chain wheel mounting structure according to an embodiment of the invention;
Fig. 2 is the front elevation of seeing from the operating seat of semi-free lifting holder device in Fig. 1 fork truck;
Fig. 3 is the transparent view of Fig. 2 holder device;
Fig. 4 is the front elevation that the chain wheel mounting structure of common two-side supporting system is seen from operating seat;
Fig. 5 is the front elevation that the chain wheel mounting structure of a common side bearing system is seen from operating seat.
With reference to accompanying drawing, one embodiment of the invention is specifically described, present embodiment is used to have the fork truck of semi-free lift system, at first describes the holder device of free lift system with reference to Fig. 2 and Fig. 3.As shown in the figure, lift cylinder 3 lays respectively at support rear portion, a pair of left and right sides, and specifically, left and right oil cylinder 3 raises from the grade beam (not shown) of outer support 1, by a chain beam 5 top of piston rod 4 is interconnected.
By the mode of wheel carrier 8, sprocket wheel 10 respectively is connected to the lower surface, the left and right sides of chain beam 5.In addition, by the elevator chain 11 of each sprocket wheel 10 supporting, the one end is connected in lift cylinder 3, and the other end is connected in a raising legs (not shown) along inner support 2 up-and-down movements.
The conduit 6 that axis is separately arranged in vertical direction is by welding or fixing rigidly with left and right sides bearing 8 front surface sides (deeper entering opposite side with respect to Fig. 2 plane) monolithic molding respectively, each conduit 6 is positioned at chain beam 5 front end face front portions, and a cylindrical hole is arranged, the guide rod 7 that dangles from inner support 2 entablatrance 2a lower surfaces slidably cooperates with cylindrical hole.
In this way, between entablatrance 2a lower surface and conduit 6 upper surfaces, have a free lifting capacity L, it should be noted that, as shown in Figure 3, between entablatrance 2a and chain beam 5, provide a preposition to move with respect to fore-and-aft direction, the interference when avoiding freely promoting.
Referring now to describe the chain wheel mounting structure in detail with Fig. 1, each wheel carrier 8 top is welded on chain beam 5 lower surfaces, dangle from this, connecting bore 9 in that its downside has a level to penetrate is used for mounting support pin 12, and connecting bore 9 comprises the tapered taper hole 9a of end on one day one, with a diameter greater than taper hole 9a and the screw 9b concentric with it, taper hole 9a be positioned at the outside, both, with respect to a left side and right wheel carrier 8 towards lift cylinder 3.
The rest pin 12 that is used for supporting wheel 10 is step-like pins, and the support that is used for sprocket wheel 10 comprises a parallel portion 12a, and the mounting portion that is used for wheel carrier 8 comprises a tapering 12b.When rest pin 12 is packed among the taper hole 9a of wheel carrier 8, prevent that by a stopper bolt 13 it from coming off, stopper bolt screws in screw 9b, and has the square hole 13a that is used to the instrument that inserts.
It may be noted that sprocket wheel 10 is contained on the parallel portion 12a of rest pin 12 in rotating mode, and prevent that by a circular card 14 or like it is drawn out.
In the chain wheel mounting structure of present embodiment, rest pin 12 adopts a taper with respect to wheel carrier 8, and the one end is supported.Rest pin 12 is contained on the wheel carrier 8, makes it insert mounting hole 9 from right side shown in Figure 1, so that parallel portion 12a stretches out from this, then stopper bolt 13 is screwed in the tapped bore 9b of connecting bores 9.
In addition, when rest pin 12 is inserted taper hole 9a, sprocket wheel 10 is contained in the parallel portion 12a of rest pin 12, loads onto circular card 14 then and prevent that it from coming off.
So, owing to making the rest pin 12 by above-mentioned installation, stopper bolt 13 is subjected to a pressure at its end face, and thus, make tapering 12b be attached to the taper hole 9a of connecting bore 9 closely and fix.In other words, because rest pin 12 is aspectant contacts with wheel carrier 8,, also can reach the equal intensities of welding under fixing or the global formation situation so both be cantilever beam structure.
It should be noted that after stopper bolt 13 was installed, screw carried out build-in along its periphery preferably by known methods-for example.
On the other hand,, then take off and be used to the circular card 14 that prevents that sprocket wheel 10 from coming off, on the other hand, from screw 9b, take out stopper bolt 13 from rest pin 12 if must take off sprocket wheel 10.From the taper hole 9a of wheel carrier 8, pull out rest pin 12 to the right as shown in Figure 1 then and it is taken off.It should be noted that, described that with reference to Fig. 1 sprocket wheel 10 is installed in left side shown in Figure 2, sprocket wheel be installed in right side shown in Figure 2 direction and recited above be symmetrical.
As mentioned above, according to the present invention, it does not need to provide especially a distance to be used for the Assembly ﹠Disassembly of sprocket wheel.Be in, the distance L 1 at 11 centers only requires to be slightly wider than the width of sprocket wheel 10 from lift cylinder 3 to elevator chain, and compare with common mounting structure can be little many.As a result, can make the chain pitch L2 between a left side and the right elevator chain 11 become wideer.
Should note row, present embodiment has been described the fork truck that is used to have semi-free lift system, and for the fork truck that free lift system is arranged, it also has same effect and advantage certainly.In addition, though front visibility is not produced improvement, it also can be applicable to the fork truck based on the common standard specification, and without any problem.
In addition, if necessary, rest pin 12 and stopper bolt 13 can be formed as one mutually, or a square shaft is provided, and replace the square hole 13a of stopper bolt 13.
As mentioned above, according to chain wheel mounting structure of the present invention, both be cantilever beam structure, it also can provide required intensity, and the element of elevator chain-obstruction front visibility, can be positioned as close to lift cylinder, so the chain pitch between the left and right elevator chain can broaden, and enlarge front visibility.
Claims (6)
1. a fork truck chain wheel mounting structure is contained in a sprocket wheel on one wheel carrier rotationally by a rest pin, and described chain wheel mounting structure is characterised in that: comprising:
One is formed at the taper hole on the described wheel carrier, and its smaller diameter side is towards described sprocket wheel;
One rest pin has a supporting tapering of a shape and described taper hole and a sprocket bearing part of extending from the tapering, and it has a less diameter with respect to the tapering;
One device, when described taper hole is inserted and when described wheel carrier stretches out the sprocket bearing part in described rest pin tapering, this device touches the outer peripheral face in described rest pin tapering and described taper hole inner peripheral surface pressure, described be used to produce press the device that touches to comprise that one can screw in screw with the coaxial screw and that is formed on the described wheel carrier of described taper hole and is close to the stopper bolt in described rest pin tapering.
2. chain wheel mounting structure as claimed in claim 1 is characterized in that: described wheel carrier is contained in the crossbeam two ends that connect a pair of inner support symmetrically.
3. chain wheel mounting structure as claimed in claim 1 is characterized in that: described stopper bolt and described rest pin global formation.
4. chain wheel mounting structure as claimed in claim 1 is characterized in that: the moulding respectively of described stopper bolt and described rest pin.
5. chain wheel mounting structure as claimed in claim 1 is characterized in that: the sprocket bearing portion of described rest pin is cylindrical, and has one to prevent the element that comes off in the end of stretching out from described sprocket wheel.
6. as arbitrary described chain wheel mounting structure in the claim 1～6, it is characterized in that: described fork truck comprises: a pair of vertical outer support that is separated from each other; The a pair of inner support that can rise and descend in described outer support inboard; One entablatrance is contained in the inner support upper end they is interconnected; A pair of lift cylinder rises near described outer support separately, and a piston rod is respectively arranged; One chain beam, being contained in separately, the piston rod upper end interconnects them; A pair of elevator chain, the one end is connected in each lift cylinder, and the other end is connected in along the raising legs of described inner support lifting; Pair of sprocket respectively is connected near the described chain beam end by wheel carrier, is used to guide the lifting of described elevator chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93118946A CN1034800C (en) | 1993-10-15 | 1993-10-15 | Chain wheel mounting structure in forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93118946A CN1034800C (en) | 1993-10-15 | 1993-10-15 | Chain wheel mounting structure in forklift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1101620A CN1101620A (en) | 1995-04-19 |
| CN1034800C true CN1034800C (en) | 1997-05-07 |
Family
ID=4992723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93118946A Expired - Fee Related CN1034800C (en) | 1993-10-15 | 1993-10-15 | Chain wheel mounting structure in forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034800C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011019A (en) * | 1976-01-16 | 1977-03-08 | Ingersoll-Rand Company | Adjustable and disengagable earth raise borer stem |
| US4227826A (en) * | 1979-02-16 | 1980-10-14 | Dynaloc Corporation | Hub-locking device |
| US4449614A (en) * | 1980-11-28 | 1984-05-22 | Nissan Motor Company, Limited | Lift device |
-
1993
- 1993-10-15 CN CN93118946A patent/CN1034800C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011019A (en) * | 1976-01-16 | 1977-03-08 | Ingersoll-Rand Company | Adjustable and disengagable earth raise borer stem |
| US4227826A (en) * | 1979-02-16 | 1980-10-14 | Dynaloc Corporation | Hub-locking device |
| US4449614A (en) * | 1980-11-28 | 1984-05-22 | Nissan Motor Company, Limited | Lift device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1101620A (en) | 1995-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1900619B1 (en) | Bearing support assembly on a mounting board | |
| CN1034800C (en) | Chain wheel mounting structure in forklift | |
| CN102149549A (en) | Motor vehicle, particularly commercial vehicle, and joint arrangement | |
| DE19606104A1 (en) | Control arm for use in a vehicle suspension system | |
| DE102007055330B3 (en) | Carrying element with weight measurement for lifting platforms | |
| HUE034758T2 (en) | Suspension coil spring and strut-type suspension device | |
| CN1136107C (en) | Coupling device between a towing vehicle, especially an agricultural tractor and a trainler | |
| DE60010667T2 (en) | METHOD AND DEVICE FOR STORING A CAB WITH REGARD TO THE CHASSIS | |
| EP1075991B1 (en) | Support assembly for motor vehicles | |
| EP2389307B1 (en) | Subframe with guiding means and vehicle comprising said subframe | |
| US5361872A (en) | Chain wheel mounting structure in forklift | |
| EP2612774A1 (en) | Suspension device | |
| CN207408106U (en) | A kind of multifunction test trolley | |
| CN213323110U (en) | Railway vehicle and underframe thereof | |
| CN215719939U (en) | Supporting structure and mining dump truck | |
| CN218624474U (en) | Fuel pump filter screen | |
| CN218320435U (en) | Steel wire rope guide wheel device and tower crane | |
| CN211417396U (en) | Double-coaxial suspension structure | |
| CN219947814U (en) | Multi-interface oil cylinder bracket for oil-gas front suspension of mining dump truck | |
| CN214874088U (en) | Composite plate spring supporting mechanism for lorry | |
| CN220974935U (en) | Adjustable packing material rack for automobile sunroof | |
| CN220615941U (en) | Novel knuckle back shaft | |
| CN1132322A (en) | Hydraulic buffer | |
| CN217756505U (en) | Aluminum bar lifting appliance | |
| CN219351398U (en) | Automobile dimming motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |