CN1773028B - Engineering construction machinery door opening and closing apparatus - Google Patents
Engineering construction machinery door opening and closing apparatus Download PDFInfo
- Publication number
- CN1773028B CN1773028B CN 200410090933 CN200410090933A CN1773028B CN 1773028 B CN1773028 B CN 1773028B CN 200410090933 CN200410090933 CN 200410090933 CN 200410090933 A CN200410090933 A CN 200410090933A CN 1773028 B CN1773028 B CN 1773028B
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- inside handle
- handle bar
- door
- pin
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Abstract
The present invention relates to a door opening and closing device of engineering building machinery. Said door opening and closing device is formed from door self-body which is mounted on the operator cabin and can be freely opened and closed, interior handle cover mounted on inner side of door self-body, fixed component fastened on the interior handle cover, interior handle bar free-turnabl hinge-mounted on the fixed component by means of pin and resin washer placed between the interior handle bar and fixed component. It is characterized by that said door opening and closing device can prevent the interior handle bar from gathering rust.
Description
Technical field
The present invention relates to the door switch unit of the construction machine that when inner switch is arranged at the door of driver's cabin on the such construction machine of hydraulic crawler excavator, uses.
Background technology
On the driver's seat in the construction machine of hydraulic crawler excavator that is arranged at prior art and so on, the door of switch when being provided with the operator and coming in and going out driver's cabin.
Fig. 9 is the exploded perspective view that expression is arranged at the general driver's cabin on the hydraulic crawler excavator, free switch the locking device c that door body b is locked as closed condition is housed in being arranged among the door body b on the side of driver's cabin a, the inside handle bar e that operates when from inner switch door body b and this locking device c interlock, the outer handle bar d that operates when from outer switch door body b is by linkage f and this locking device c interlock in addition.
Inside handle bar e is that base end part can be freely to rotate by pin j hinged bearing constituting on fixed part i, this fixed part i is fixed on the inboard of inside handle lid h, and this inside handle lid h is installed into the state of the peristome of the inner panel g upper shed that is enclosed in a body b from the inboard.
Inside handle bar e is by at the augmentor (not shown) that is provided with between itself and the fixed part i and apply active force to locking direction always, when the m that handles knob that will be located at leading section move to evolution to the time, with pin j is after inside handle bar e is rotated at the center, because locking device c moves to the latch-release direction, so the locking of door body b is opened, thereby can open a body b.
On the other hand, for example described in the open special fair 7-6217 communiques of communique of patent documentation 1 one Japan Patents (the 5th page of 9 hurdles), in hydraulic crawler excavator, be provided with the locking device that the door of driver's cabin is remained in open mode.
Locking device as above-mentioned patent documentation 1 described door, thereby be used in that the door of driver's cabin is opened fully when carrying out operation door lock is decided to be full open position and avoid a situation generation because of making door close and pin because of carelessness, in the construction machine of hydraulic crawler excavator and so on, be in and carry out operation under the full open position through the door of the driver's cabin of being everlasting.
As the prior art represented among above-mentioned Fig. 9 from the inner switch door body b of driver's cabin a the time inside handle bar e that operates and fixed part i be shaped by iron plate and form, though be that surperficial integral body is sprayed paint, operate continually that the spraying paint of sliding contacting part of fixed part i and inside handle bar e can come off behind the inside handle bar e.
In addition, the construction machine of hydraulic crawler excavator and so on mostly as described in the above-mentioned patent documentation 1, carries out operation under the state that the door of driver's cabin is opened fully.
Therefore, under the state that door is opened fully, carry out the words of operation during rainfall, the rainwater that enters from the gap that is opened between peristome on the body b and inside handle lid h arrives sliding contacting part or the hinge dress portion of fixed part i and inside handle bar e, and gets rusty in the part that comes off of spraying paint.
Because the rust that produces in the sliding contacting part of fixed part i and inside handle bar e or hinge dress portion harms the action of inside handle bar e or with inside handle bar e rust firmly, become not firm so produce the lock-out state of locking device c, a door body b is careless and open, produce problems such as collision with on every side obstruction in operation, and also have under long-time occasion of placing construction machine, inside handle bar e rust is lived, and makes problems such as a body b can not open.
Summary of the invention
The present invention makes in order to improve these existing issues, and its purpose is to provide a kind of door switch unit that can not make inside handle bar e rust construction machine firmly because of getting rusty.
In order to achieve the above object, the door switch unit of construction machine of the present invention, wherein, this project building machinery comprises: but with free switch the door body that is arranged on the driver's cabin be locked as the locking device of blocking, link with locking device, and the inside handle bar of in driver's cabin, operating during switch door body, it is characterized in that this door switch unit comprises: be installed on the inside handle lid on the body, be anchored on the fixed part that inside handle covers, can cut with scissors the inside handle bar that is loaded on the fixed part freely to rotate by pin, be located in the resin packing ring between inside handle bar and the fixed part.
According to above-mentioned formation, even for from the inner switch door body of driver's cabin and operate the inside handle bar continually, also owing to make between inside handle bar and the fixed part and do not have Metal Contact because of being located in resin packing ring between inside handle bar and the fixed part, so when when rainfall, under the state that door is opened fully, carrying out operation, even enter into because of rainwater near the hinge dress portion of inside handle bar and fixed part, and on inside handle bar or fixed part, get rusty, can not live because of the action of rust impairment inside handle bar or with the inside handle puccinia graminis yet.
Therefore can eliminate switch for the door body bring obstacle or since the locking of locking device not exclusively, a body is opened in the operation, and make problems such as a body and on every side obstruction clash, even and owing to long-time place also can not live because of rust makes the inside handle puccinia graminis, so needn't worry can not switch door body etc.
In order to achieve the above object, the door switch unit of construction machine of the present invention is folded with the resin packing ring between head that is formed by pin and fixed part.
According to above-mentioned formation, even because by selling riveted joint, pin and inside handle bar and the rotation of pin one, there is not Metal Contact between the head of pin and the fixed part, so can not harm the action of inside handle bar or the inside handle puccinia graminis is lived because of producing rust between the head of pin and the fixed part.
In order to achieve the above object, the resin packing ring of the door switch unit of construction machine of the present invention is formed by the fluorine resin with heat resistance, abrasion performance and sliding.
According to above-mentioned formation, since in advance inside handle lid and fixed part and inside handle bar are assembled then spray paint after, even can not fuse or be out of shape with high temperature heating resin packing ring yet, and because of using the resin packing ring that the frictional resistance between inside handle bar and the fixed part is reduced, so the operability of inside handle bar is improved, even and owing to using the resin packing ring also to wear and tear fewly for a long time, so durability is also higher.
In order to reach above-mentioned purpose, the door switch unit of construction machine of the present invention, wherein construction machine comprises: lower running body that can be voluntarily, be arranged at the upper rotating body on the lower running body freely to rotate, be installed on the working rig on the front portion of upper rotating body, be arranged at the driver's cabin on the front portion of upper rotating body, be arranged at the door body of the side of driver's cabin free switch, the door body is locked as the locking device of blocking, with locking device interlock and the inside handle bar in driver's cabin, operated during switch door body, it is characterized in that the door switch unit of this project building machinery comprises: be installed on the inside handle lid on the inboard of a body, be anchored on the fixed part on the outside of inside handle lid, lower end side is cut with scissors freely to rotate the inside handle bar that is loaded on the fixed part by pin with head, be located between inside handle bar and the fixed part and the head of fixed part and pin between the packing ring of making by fluorine resin.
According to above-mentioned formation, when under the state that door is opened fully, carrying out operation during rainfall, even enter into because of rainwater near the hinge dress portion of inside handle bar and fixed part, and on inside handle bar or fixed part, get rusty, can not live because of the action of rust impairment inside handle bar or with the inside handle puccinia graminis yet.
Therefore, can eliminate switch for the door body bring obstacle or since the locking of locking device not exclusively, a body is opened in the operation, and make a body and obstruction on every side that problems such as collision take place, even and owing to long-time place also can not live because of rust makes the inside handle puccinia graminis, so needn't worry can not switch door body etc.
Even in addition because by the resin packing ring being located in be formed between head on the pin and the fixed part by selling riveted joint, pin and inside handle bar and the rotation of pin one, there is not Metal Contact between the head of pin and the fixed part, so can not harm the action of inside handle bar or the inside handle puccinia graminis is lived because of producing rust between the head of pin and the fixed part.
And because form the resin packing ring by fluorine resin with heat resistance, abrasion performance and sliding, so since in advance inner handle lid and fixed part and inner handle bar are assembled then spray paint after, even can not fuse or be out of shape with high temperature heating resin packing ring yet, and because of using the resin packing ring that the frictional resistance between inside handle bar and the fixed part is reduced, so the operability of inside handle bar is improved, even and owing to the long-time resin packing ring that also seldom can wear and tear that uses, so durability is also higher.
Description of drawings
Fig. 1 is the lateral view of construction machine that adopts the door switch unit of embodiment of the present invention.
Fig. 2 is the elevation of door switch unit of the construction machine of embodiment of the present invention.
Fig. 3 be from the A direction of Fig. 2 see to view.
Fig. 4 is the sectional view along the B-B line of Fig. 2.
Fig. 5 is near the amplification front elevation that constitutes the inside handle bar of door switch unit of construction machine of embodiment of the present invention.
Fig. 6 be from the C direction of Fig. 5 see to view.
Fig. 7 be from the D direction of Fig. 5 see to view.
Fig. 8 is the sectional view along the E-B line of Fig. 5.
Fig. 9 is the exploded perspective view of driver's cabin of the construction machine of expression prior art.
The specific embodiment
With reference to figure to the embodiment of the invention process in hydraulic crawler excavator is elaborated.
Fig. 1 is the lateral view of hydraulic crawler excavator, and Fig. 2 is the elevation of door switch unit.Fig. 3 be from the A direction of Fig. 2 see to view.Fig. 4 is the sectional view along the B-B line of Fig. 2.Fig. 5 is near the amplification front elevation of inside handle bar that constitutes door switch unit.Fig. 6 be from the C direction of Fig. 5 see to view.Fig. 7 be from the D direction of Fig. 5 see to view.Fig. 8 is the sectional view along the E-E line of Fig. 5.
Hydraulic crawler excavator shown in Figure 1 comprises: lower running body 1 that can be voluntarily, be arranged at top cycle body 2 on the lower running body 1 with rotating freely.
Lower running body 1 has the crawler belt vehicle frame 3 that is made of middle vehicle frame 3a, a pair of sidecar frame 3b that is provided with parallel to each other in the both sides of middle vehicle frame 3a, each sidecar frame 3b one distolateral on freedom be supported with idle pulley 4 movably forward and backward, another is distolateral to be provided with the drive sprocket 6 that drives by running motor 5 revolutions that are made of hydraulic motor.
Package has the crawler belt 7 of endless between idle pulley 4 and drive sprocket 6, by drive this crawler belt 7 with drive sprocket 6, make the lower running body 1 can be voluntarily, and free rotaring ground supporting has a plurality of rollers 8 on the top and the bottom of sidecar frame 3b.
Be arranged at the top revolving body 2 on the middle vehicle frame 3a of crawler belt vehicle frame 3 freely to rotate, its bottom is made of vehicle body frame 10, on this vehicle body frame 10 working rig 11 is installed.
As shown in Figure 1, working rig 11 be loaded on the vehicle body frame 10 by cardinal extremity hinge and by the swing arm cylinder drive and the swing arm 12 that can freely rise and fall, front end that the base end side hinge is loaded on swing arm 12 and by dipper cylinder 14 drive and can free rotating dipper 15, cut with scissors the front end that is loaded on dipper 15 and by 16 drivings of scraper bowl cylinder and can constitute by free rotating scraper bowl 17.
Be provided with the driver's cabin 18 of the side that is positioned at working rig 11 in the front portion of vehicle body frame 10, be provided with the motor compartment 19 that covers by hood 19a at the rear portion of vehicle body frame 10, contain the motor (not shown) that power is used in this motor compartment 19, counterweight 20 is installed in the rear end of vehicle body frame 10.
On the driver's cabin 18 on the vehicle body frame 10 that is arranged at top revolving body 2, with the side of working rig 11 opposition sides on free switch be provided with a body 22.
The locking device 23 that door body 22 is locked in closed condition is housed, door switch unit 24 and these locking device 23 interlocks on door body 22.
The inside handle bar 25 of door switch unit 24 operation by the time from the inner switch door body 22 of driver's cabin 18 and during from outer switch door body 22 the outer handle bar 35 of operation constitute.
Inside handle bar 25 is installed on the inside handle lid 26 by fixed part 27, and this inside handle lid 26 seals the peristome 22b on the inner panel 22a that is opened on a body 22 from the inboard.
Inside handle lid 26 is formed by the metal sheet bigger slightly than the peristome 22b of door body 22, is fixed with fixed part 27 by methods such as welding on the end of locking device 23 sides.
Also by being that the cross section is roughly that the コ font forms with same metal sheet drawing, rearward end and bottom are fixed on the lateral surface of inside handle lid 26 fixed part 27.
Inside handle bar 25 is also same with fixed part 27, by the metal sheet drawing is formed, is rectangle elongated on above-below direction, and lower end side is slightly to locking device 23 lateral bending songs, and the bottom is loaded on the fixed part 27 by pin 28 hinges.
As shown in Figure 8, pin 28 forms stairstepping by large-diameter portion 28a and minor diameter part 28b, is formed with the head 28c that has than large-diameter portion 28a larger diameter at the end of large-diameter portion 28a.
In addition, the minor diameter part 28b of pin 28 rivets the front end of minor diameter part 28b with the state that is embedded among the pin-and-hole 25a on the bottom that is located in inside handle bar 25, therefore inside handle bar 25 turns round with pin 28 one, and between fixed part 27 and inside handle bar 25 also the folder establish and the resin packing ring 30 of above-mentioned resin packing ring 30 with material, when being center steering inside handle bar 25, there is not Metal Contact between inside handle bar 25 and the fixed part 27 and between the head 28c of fixed part 27 and pin 28 with pin 28.
The roughly pars intermedia of handlebar 25 is given prominence to and is provided with actuating strut 25b internally, the pin 25c of the front end of inside handle bar 25 by being riveted on actuating strut 25b and with locking device 23 interlocks, on the upper end of inside handle bar 25, be formed with the installation sheet 25d that is bent into approximate right angle, this installation sheet 25d being embedded in the state in 31 of handling knob that is formed by resin, will handle knob with securing members such as Screw 32 31 is anchored on the upper end of inside handle bar 25.
On the lower end of inside handle bar 25 on the direction opposite with actuating strut 25b the outstanding tab 25e that is provided with, tangle by inside handle bar 25 is applied the augmentor 33 that the extension spring of active force constitutes to locking direction at the front end of this tab 25e, the other end of augmentor 33 hangs over by cutting and erects on the tab 27b that is formed on the fixed part 27.
Though will be with the inside handle bar 25 of above-mentioned formation and fixed part 27, and inside handle lid 26 assembling in advance and integral body sprayed paint before being installed on the body 22, make its drying with high temperature then, but has stable on heating resin packing ring 30 owing to use, even so carry out high temperature drying, resin packing ring 30 can not fuse or be out of shape yet.
Cut with scissors freely to rotate by pin 37 from the outer handle bar 35 of outer switch door body 22 and to be contained on the carriage 36 that is anchored in the body 22, thereby can operate from the outside of door body 22.
Wherein 40 lock cores for the usefulness that locks in Fig. 2 link with locking device 23 by bar 41.
Next the effect to the door switch unit of the construction machine of above-mentioned formation describes.
The door body 22 that is arranged on the driver's cabin 18 becomes the state that is locked by locking device 23, during from the outer switch door body 22 of driver's cabin 18, because after drawing the outer handle bar 35 that is arranged at a body 22 outsides, outer handle bar 35 is a center steering with pin 37, thereby removed locking, so can open a body 22 from the outside of driver's cabin 18 by the locking device 23 of push-and-pull cable wire 39 interlocks.
During in addition from the inner switch door body 22 of driver's cabin 18,31 rearward draw being arranged at handling knob of inside handle bar 25 upper ends.
So because inside handle bar 25 is the revolution of center back side with pin 28, thereby removed locking by the locking device 23 of actuating strut 25b interlock, so can open a body 22 from the inboard of driver's cabin 18.
Even because switch one a side body 22, and operate inside handle bar 25 continually, also since between inside handle bar 25 and the fixed part 27, and the head 28c of the pin 28 of supporting inside handle bar 25 and fixed part 27 between be folded with resin packing ring 30, so do not have Metal Contact between mutual.
Therefore, because spraying paint of sliding contacting part can not peeled off, even so when when rainfall, under the state of door body 22 standard-sized sheets, carrying out operation, because rainwater enters the hinge dress portion of inside handle bar 25, because of going up the head 28c of the pin 28 of fixed part 27 or supporting inside handle bar 25, rainwater produces rust, also can solve the action of harming inside handle bar 25 or inside handle bar 25 rust are lived because of rust, and can't carry out the problems such as switch of a body 22.
In addition since be located in inside handle bar 25 and fixed part 27, and the resin packing ring of selling between 28 the head 28c 30 form by fluorine resin with sliding, so can reduce the friction of sliding contacting part, so the operability of inside handle bar 25 is improved also.
Wherein in the above-described embodiment, example about the driver's cabin that is implemented on hydraulic crawler excavator is illustrated, but also can be implemented in the construction machines such as little revolution hydraulic crawler excavator or crane, though when being implemented in the little revolution hydraulic crawler excavator, driver's cabin is arranged near the front, center of top revolving body; When being implemented in the crane, driver's cabin is arranged at the anterior right side of top revolving body, but arbitrary occasion all can similarly be implemented with above-mentioned embodiment.
The present invention is such as described in detail above, even for from the inner switch door body of driver's cabin and operate the inside handle bar continually, also owing to having the resin packing ring to be located in to make between inside handle bar and the fixed part inside handle bar and fixed part not to have Metal Contact between mutually, even so when rainfall, be in when carrying out operation under the full-gear at the door body, because rainwater enters near the hinge dress portion of inside handle bar and fixed part, produce rust on inside handle bar or the fixed part and make, also can not harm the action of inside handle bar because of rust, or firmly with the inside handle puccinia graminis.
Therefore, can eliminate obstacle that the switch for the door body brings or since the locking of locking device not exclusively, a body is opened in the operation, and make a body and obstruction on every side that problems such as collision take place, even and owing to long-time place also can not live because of rust makes the inside handle puccinia graminis, so needn't worry can not switch door body etc.
In addition because by the resin packing ring being located in be formed between the head and fixed part on the pin, even by selling riveted joint, pin and inside handle bar and the rotation of pin one, there is not Metal Contact between the head of pin and the fixed part, so can not harm the action of inside handle bar because of producing rust between the head of pin and the fixed part, or firmly with the inside handle puccinia graminis, and because by having heat resistance, abrasion performance, and the fluorine resin of sliding forms the resin packing ring, so since in advance inner handle lid and fixed part and inner handle bar are assembled then spray paint after, even can not fuse or be out of shape with high temperature heating resin packing ring yet, and because of using the resin packing ring that the friction opposing between inside handle bar and the fixed part is reduced, so the operability of inside handle bar is improved, even and owing to the long-time resin packing ring that also seldom can wear and tear that uses, so durability is also higher.
Claims (4)
1. the door switch unit of a construction machine, this project building machinery has: but with free switch be arranged at the locking device that door body on the driver's cabin is locked in closed condition; The inside handle bar of operating during with above-mentioned locking device interlock and from the above-mentioned door of above-mentioned driving cubicle switch body is characterized in that,
The door switch unit of this project building machinery comprises: be installed on the inside handle lid on the above-mentioned door body; Be anchored on the fixed part that above-mentioned inside handle covers; Cut with scissors the above-mentioned inside handle bar that is loaded on the said fixing parts freely to rotate by pin; Resin packing ring between above-mentioned inside handle bar and said fixing parts.
2. the door switch unit of construction machine as claimed in claim 1 is characterized in that,
Establish above-mentioned resin packing ring being formed between head on the above-mentioned pin and the said fixing parts folder.
3. the door switch unit of construction machine as claimed in claim 1 or 2 is characterized in that,
Above-mentioned resin packing ring is formed by the fluorine resin with heat resistance, abrasion performance and sliding.
4. the door switch unit of a construction machine, this project building machinery comprises: can free lower running body voluntarily; Be arranged at the top revolving body on the above-mentioned lower running body freely to rotate; Be installed on the working rig on the front portion of above-mentioned top revolving body; Be arranged at the driver's cabin on the front portion of above-mentioned top revolving body; Be arranged at the door body of the side of above-mentioned driver's cabin free switch; Above-mentioned door body is locked in the locking device of closed condition; The inside handle bar of operating during with above-mentioned locking device interlock and from the above-mentioned door of above-mentioned driving cubicle switch body is characterized in that,
The door switch unit of this project building machinery has: be installed on the inside handle lid on the inboard of above-mentioned door body; Be anchored on the fixed part on the outside of above-mentioned inside handle lid; Lower end side is cut with scissors freely to rotate the above-mentioned inside handle bar that is loaded on the said fixing parts by pin with head; Be located between above-mentioned inside handle bar and the said fixing parts and be located in the packing ring of making by fluorine resin between the head of said fixing parts and above-mentioned pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410090933 CN1773028B (en) | 2004-11-10 | 2004-11-10 | Engineering construction machinery door opening and closing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410090933 CN1773028B (en) | 2004-11-10 | 2004-11-10 | Engineering construction machinery door opening and closing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1773028A CN1773028A (en) | 2006-05-17 |
| CN1773028B true CN1773028B (en) | 2010-04-28 |
Family
ID=36760148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410090933 Expired - Fee Related CN1773028B (en) | 2004-11-10 | 2004-11-10 | Engineering construction machinery door opening and closing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1773028B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7237035B2 (en) * | 2020-02-27 | 2023-03-10 | 日立建機株式会社 | construction machinery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206818Y (en) * | 1994-08-12 | 1995-09-06 | 曹承全 | Door handle with bolt locking device |
| JP2001113946A (en) * | 1999-10-20 | 2001-04-24 | Komatsu Ltd | Cab of construction machinery |
| JP2001163268A (en) * | 1999-12-07 | 2001-06-19 | Hitachi Constr Mach Co Ltd | Exterior cover device for apparatus equipped with engine |
| JP2002155922A (en) * | 2000-11-17 | 2002-05-31 | Hitachi Constr Mach Co Ltd | Bearing device |
-
2004
- 2004-11-10 CN CN 200410090933 patent/CN1773028B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206818Y (en) * | 1994-08-12 | 1995-09-06 | 曹承全 | Door handle with bolt locking device |
| JP2001113946A (en) * | 1999-10-20 | 2001-04-24 | Komatsu Ltd | Cab of construction machinery |
| JP2001163268A (en) * | 1999-12-07 | 2001-06-19 | Hitachi Constr Mach Co Ltd | Exterior cover device for apparatus equipped with engine |
| JP2002155922A (en) * | 2000-11-17 | 2002-05-31 | Hitachi Constr Mach Co Ltd | Bearing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1773028A (en) | 2006-05-17 |
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| 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 | ||
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Granted publication date: 20100428 Termination date: 20161110 |