KR19980056901U - Switchgear of heavy duty cab door - Google Patents

Abstract

The present invention relates to an opening and closing device of a cab door for heavy equipment, and more particularly, in the opening and closing device of the cab door for heavy equipment to open and close the cab door to the cab by a locking means formed in the cab, The housing fixed to the inner surface of the cab on the same center line with the through-hole formed in the position, and one side is built into the housing and sliding movement when opening and closing the cab door, press the cab door to the cab side when unlocking the locking means And an elastic member installed between the housing inner surface and the driving member to be closed so as to be elastically biased in an initial state in which the driving member is installed in the driving direction outwardly. Provides an open / closed cab door.

Description

Switchgear of heavy duty cab door

The present invention relates to an opening and closing device of a cab door for heavy equipment, and more particularly, to protect the cab door from impact during opening and closing of the cab door for heavy equipment, and to close the cab door without leaving the cab after work with the cab door open. The opening and closing device of the cab door for heavy equipment.

Heavy equipment, such as excavators and loaders, often operate with the cab door open due to the characteristics of the equipment. In particular, in summer, the cab door is opened with the cab door open to protect the driver from the high temperatures of strong direct sunlight.

At this time, as schematically shown in Figures 1 and 2, the cab door opening and closing device for heavy equipment according to the prior art, is mounted to the cab (2) to open the cab door (1) to prevent shaking during work and driving. The lever 4 which is interlocked with the catch member 3 with respect to the hook-shaped catch member 3 is locked, and the cab door 1, the cab 2, and the catch member 3 when the cab door 1 is opened and closed. Rubber bumper (5) is mounted on the upper and lower side of the cab (2) to prevent damage due to the shock due to the rapid contact between the cab door (1) and the cab door (1).

Accordingly, the cab door 1 is kept open by being coupled to each other by the catch member 3 formed in the cab 2 and the lever 4 interlocked with the catch member 3. The rubber door bumper 5 formed on the outer side of the cab 2 protects the cab door 1 from impact when the door 1 is opened, and the catch member 3 and the lever 4 are locked by the lever 4 operation. Release the door to close the cab door (1).

However, in order to close the cab door 1 after finishing a predetermined work in the state where the cab door 1 is opened by the catch member 3 and the lever 4 being locked, the driver is separated from the driver's seat and the cab door 1 is closed. Since the user needs to pull toward the cab 2, the user is very uncomfortable.

Accordingly, an object of the present invention is to protect the cab door from impact generated when the cab door for heavy equipment is opened and to open the cab door, and to close the cab door from the driver's seat after the work is completed with the cab door open. It is to provide the opening and closing device of the cab door for heavy equipment to provide convenience.

1 is a side view of a cab door for heavy equipment according to the prior art

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a combined view of the state after the operation of the opening and closing device of the cab door for heavy equipment according to the present invention

Figure 4 is a coupling diagram of the state before operation of the opening and closing device of the cab door for heavy equipment according to the present invention

Explanation of symbols on the main parts of the drawings

10: through hole

11,12 fastening member

13: housing

15: Bracket

16: flange

17: body

18: through hole

19: drive member

19A: screw hole

20: elastic member

21: rubber bumper

22: cylindrical rod

22A: Thread

An object of the present invention described above, in the opening and closing device of the cab door for heavy equipment to open and close the cab door to the cab by the locking means formed in the cab, the same as the through-hole formed in the cab predetermined position on the same center line A housing fixed to an inner side of a cab, and a driving member installed at one side of the housing to slide when the cab door is opened and closed, and to press and close the cab door toward the cab when the locking means is unlocked, and in the housing. It is achieved by providing an opening and closing device of the cab door for heavy equipment, characterized in that it is provided between the side and the drive member is provided with an elastic member elastically biased to an initial state in which the drive member is carbonized in the driving direction outward. .

According to a preferred feature of the present invention, the cylindrical rod is provided with a cylindrical rod reciprocating when the driving member is installed in the housing and the cab door opening and closing, and fixed to the outer end of the cylindrical rod to the contact during opening and closing the cab door It provides an opening and closing device of the cab door for heavy equipment, characterized in that it comprises a rubber bumper to protect the cab door from the impact.

A preferred feature of the present invention is that the screw portion is formed on the outer periphery of the rod formed integrally with the rubber bumper and the rod is screwed to the cylindrical rod to selectively extend the opening of the cab door when locking the locking means. It provides an opening and closing device of the cab door for heavy equipment, characterized in that to adjust the opening angle of the cab door.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a coupling diagram of the state after the operation of the opening and closing device of the cab door for heavy equipment according to the present invention and Figure 4 is a coupling diagram of the state before the operation of the opening and closing device of the cab door for heavy equipment according to the present invention.

As shown in detail in the figure, in the opening and closing device of the cab door for heavy equipment to open and close the cab door (1) with respect to the cab 2 by the locking and unlocking of the locking means mounted to the cab, (2) Fastening members 11 and 12 are integrally formed inside the cab 2 on both sides of the through hole 10 formed at a predetermined position, and the inner surface of the cab 2 is coplanar with the through hole 10. Fixing the housing 13 of a predetermined shape, the housing 13 is a bracket in which the boss portion 14 is inserted into the above-described through hole 10 and the flange 16 is fixed to the fastening member 11, 12 15 and a body 17 in close contact with the flange 16 of the bracket 15 and fixed to the fastening members 11 and 12 and having a through hole 18 formed at the center of the lower end thereof.

In the housing 13 described above, the driving member 19 is slidably reciprocated when the cab door 1 is opened and closed. The driving member 19 moves the cab door 1 when the locking means is unlocked. Elastic biased in the initial state in the driving direction outwardly by the elastic member 20 provided between the inner surface of the body 17 and the driving member 19 so as to be closed by pressing to the side, the outer side of the driving member 19 A rubber bumper 21 is formed at the end to protect the cab door 1 from impact due to contact when the cab door 1 is opened and closed, and the driving member 19 adjusts the opening angle when the cab door 1 is opened. The rubber bumper 21 is formed integrally with the cylindrical rod rubber bumper 21 to adjust the length of the rubber bumper 21 protruding from the outer surface of the cab 2, and a threaded portion 22A is formed on the outer circumference of the cylindrical rod 22. The screw part (to be selectively extended with respect to the drive member 19) A screw hole 19A corresponding to 22A is formed at the center of the drive member 19.

Referring to the operation of the present invention configured as described above, as shown in Figure 3, the catch member formed in the cab (2) when opening the cab door (1) to work in the open state of the cab door (1) By (3) the cab door (1) is locked, so that it can be kept open. At the same time, the inner surface of the cab door 1 is pushed to the cab 2 side by the driver to contact the rubber bumper 21 which protrudes at a predetermined position up and down of the cab 2, thereby integrating with the rubber bumper 21. The drive member 19 screwed with the cylindrical rod 22 formed as a guide is guided along the boss portion 14 of the bracket 15 and slidingly moved into the housing 13, wherein the elastic member 20 is compressed. End portion of the fixing member 22 is protruded into the cab 2 through the through hole 18 of the body 17.

On the other hand, as shown in Figure 4, the lever (4) mounted on the cab (2) by the driver seated in the driver's seat to complete the predetermined work in the state that the cab door (1) is open and close the cab door (1) In the case of releasing the locking state of the catch member 3 and the lever 4 by the operation, the restoring force of the elastic member 20 in the compressed state is caused by the pressure of the rubber bumper 21 protruding from the outer surface of the cab 2. The drive member 19 is returned to the outside of the cab 2 in the body 17 of the housing 13.

Accordingly, as the return motion of the drive member 19 presses the outer surface of the cab door 1 by the rubber bumper 21, a rotational force is generated in the cab door 1, so that the cab door 1 of FIG. It is closed with the hinge portion h as the central axis.

As described above, the opening and closing device of the cab door for heavy equipment according to the present invention, after performing a predetermined operation in the state of opening the cab door for heavy equipment to close the cab door without leaving the driver's seat to provide convenience to the user I would have to.

Claims (3)

In the opening and closing device of the cab door for heavy equipment to open and close the cab door to the cab by a locking means formed in the cab, A housing fixed to the inner surface of the cab on the same center line as the through hole formed at the cab predetermined position; A driving member installed on one side of the housing and slidingly moving when the cab door is opened and closed, and when the locking means is unlocked, the driving member is closed by pressing the cab door toward the cab side; And an elastic member installed between the housing inner surface and the driving member and elastically biased to an initial state in which the driving member is coalesced in an outward direction of the driving direction thereof. The method of claim 1, wherein the drive member is installed in the housing and the cylindrical rod reciprocating when opening and closing the cab door, coupled to the cylindrical rod and moved in the cylindrical rod driving direction to determine the opening and closing angle of the cab door And a rubber bumper fixed to an outer end of the rod and fixed to an outer end of the rod to protect the cab door from impact due to contact when the cab door is opened or closed. The locking means of claim 2, wherein the cylindrical rod has a screw portion formed at an outer circumference of the rod integrally formed with the rubber bumper, and the rod is opened after the rod is screwed to the cylindrical rod to selectively extend. Opening and closing device of the cab door for heavy equipment, characterized in that for adjusting the opening angle of the cab door when locking.