CN110789313A - A construction machinery cab double glass door structure - Google Patents

Abstract

The invention discloses a construction machinery cab double glass door structure, comprising an upper glass door and a lower glass door, the upper glass door and the lower glass door are independently opened and closed; the upper glass door and the lower glass door are both fixed by a first hinge It is installed on the door frame; a lower handrail is installed on the lower glass door, and a support arm assembly is fixed on the upper part of the lower handrail; the invention can expand the side view of the cab, avoid the dead angle of driving, can observe the side engineering condition, improve the work quality and work efficiency High and improve driving safety; can increase the window, improve the lighting of the cab, avoid space limitation, and the cab door is ergonomically designed, which can relieve fatigue, improve the driving experience and comfort; can improve the cab door After closing, it can effectively isolate the inside and outside of the cab, improve security and waterproofness; it can have a buffering effect to reduce vibration and noise when the door is closed.

Description

A construction machinery cab double glass door structure

technical field

The invention relates to a double glass door structure for a cab of an engineering machinery, and belongs to the technical field of cab door structures.

Background technique

An important part of the cab construction machinery body is where professional drivers work day and night. Its structure is directly related to the safety, work efficiency and health of the driver. The cab generally adopts a thin metal shell structure and is flexibly connected to the frame, which does not bear the load and belongs to the non-load-bearing body. The existing cab door is a metal welded structure. The cab door of this structure only has doors and windows with glass tops. This kind of cab door has the following shortcomings:

1. The side view of the existing cab door is limited, and there is a blind spot for driving. It is impossible to observe the engineering status during operation, and the work efficiency is low and the safety is low.

2. The lighting in the cab is poor, and the operator's driving experience is poor.

3. The maximum number of doors and windows in the cab of the existing construction machinery is two small push-pull structures. The window is too small, the operator's space is limited, and the arm cannot be carried outside the window, which is not ergonomic.

4. The door stop structure of the existing cab door has poor sealing performance, cannot isolate the inside and outside of the cab, and has poor thermal insulation and waterproof performance.

To sum up, the prior art obviously has inconvenience and defects in practical use, so it is necessary to improve it.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a double glass door structure for a construction machinery cab, which can expand the side view of the cab, avoid driving blind spots, observe the side engineering conditions, improve the work quality, and have high work efficiency and improved Driving safety; the window can be enlarged, the lighting of the cab can be improved, and the space limitation can be avoided, and the cab door is ergonomically designed, which can relieve fatigue and improve the driving experience and comfort; can improve the cab door after closing It can effectively isolate the inside and outside of the cab, improve the security and waterproofness; it can have a buffering effect and reduce the vibration and noise generated when the door is closed.

In order to solve the above technical problems, the present invention adopts the following technical solutions: a construction machinery cab double glass door structure, including an upper glass door and a lower glass door, the upper glass door and the lower glass door are opened and closed independently; Both the glass door and the lower glass door are fixedly installed on the door frame through the first hinge; a lower handrail is installed on the lower glass door, and a support arm assembly is fixed on the upper part of the lower handrail.

Further, the upper glass door and the lower glass door are locked and fixed together by a locking mechanism; the locking mechanism includes a locking handle and a locking seat, and the locking seat is fixedly arranged on the top of the lower glass door , the locking seat is provided with a card slot; one end and the upper part of the card slot are open.

Further, a door stop structure is also arranged between the upper glass door and the lower glass door, the door stop structure includes a guard plate, the upper part of the guard plate is provided with an opening slot, and the bottom of the upper glass door is inserted fixed in the open slot.

Further, an anti-collision strip is arranged on the inner side of the upper part of the protective plate, and the anti-collision strip includes a buffer part; the buffer part is a semi-circular protrusion, and the buffer part is hollow inside.

Further, the lower part of the locking handle is provided with a block; the block is inserted into the card slot to lock and fix the upper glass door and the lower glass door.

Further, the bracket arm assembly includes a bracket, the upper end of the bracket is fixedly connected with a rubber arm bracket, and the rubber arm bracket is arranged in an arc structure; the lower end of the bracket is rotatably connected to a pin shaft, and the pin A second hinge is also rotatably connected to the shaft, and the second hinge is fixedly connected with the lower armrest; the rubber arm support rotates around the pin shaft together with the bracket.

Further, the locking handle is rotatably connected to a locking pin shaft, and the other end of the locking pin shaft is fixedly connected to the upper glass door.

Further, a lower baffle plate is arranged at the lower part of the guard plate, the lower baffle plate is lower than the top of the lower glass door by a certain distance, and the lower baffle plate is arranged on the outer side of the lower glass door.

Further, an upper handrail is installed on the upper glass door; the upper part of the upper handrail is hinged with the bottom of the gas spring; the protruding end of the gas spring is hinged with the door frame, and the opening and closing of the upper glass door is assisted by the gas spring.

Further, a limit plate is fixed on the inner side of the upper part of the lower glass door, and the limit plate includes two sections of vertical plates that are parallel to each other, and the two sections of vertical plates are connected by an inclined plate; the vertical plate below is connected to the lower glass The door is glued and fixed; when the cab door is closed, the upper riser has limited contact with the bumper of the crash bar.

After the present invention adopts the above technical scheme, compared with the prior art, it has the following advantages:

The invention can expand the side view of the cab, avoid driving blind spots, can observe the side engineering conditions, improve the work quality, high work efficiency and improve driving safety; the window can be enlarged, the lighting of the cab can be improved, the space limitation can be avoided, and The ergonomic design of the cab door can relieve fatigue and improve the driving experience and comfort; it can improve the sealing performance of the cab door after it is closed, effectively isolate the inside and outside of the cab, and improve the security and waterproofness; it can have a buffer It can reduce the vibration and noise generated when the door is closed.

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of the open state of the upper glass door of the present invention;

Figure 3 is a schematic sectional view of the locking mechanism;

Figure 4 is a schematic view of a carrier arm assembly;

Fig. 5 is the left side view of Fig. 4;

Figure 6 is a schematic cross-sectional view of a door stop structure;

In the figure,

1-upper glass door, 2-upper armrest, 3-lower glass door, 4-lower armrest, 5-locking mechanism, 51-locking handle, 511-stop, 52-locking seat, 521-card slot, 53-Lock pin, 6-Bracket arm assembly, 61-Bracket, 62-Second hinge, 63-Pin, 64-Rubber arm support, 7-Door stop assembly, 71-Bumper strip, 711-Connection Section, 712-buffer, 72-guard, 721-opening slot, 722-T-slot, 723-lower baffle, 73-limiting plate, 731-rising plate, 732-inclined plate, 8-first closing page, 9-door frame, 10-gas spring.

Detailed ways

In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the accompanying drawings.

Embodiment 1 A construction machinery cab double glass door structure

As shown in Figures 1-6, the present invention provides a construction machinery cab double glass door structure, including an upper glass door 1 and a lower glass door 3, the upper glass door 1 and the lower glass door 3 are arranged up and down, and the The upper glass door 1 and the lower glass door 3 are opened and closed independently; the upper glass door 1 and the lower glass door 3 are fixedly installed on the door frame 9 through the first hinge 8 .

An upper handrail 2 is installed on the upper glass door 1, and the upper glass door 1 can be opened and closed by pushing and pulling the upper handrail; It is hinged with the bottom of the gas spring 10 ; the protruding end of the gas spring 10 is hinged with the door frame 9 , and the opening and closing of the upper glass door 1 is assisted by the gas spring 10 .

A lower handrail 4 is installed on the lower glass door 3, and the opening and closing of the lower glass door 3 is realized by pushing and pulling the upper handrail; the lower handrail 4 is formed by bending and welding multiple sections of steel pipes; the upper part of the lower handrail 4 is fixedly arranged There is a support arm assembly 6, the support arm assembly 6 includes a bracket 61, the upper end of the bracket 61 is fixedly connected with a rubber arm support 64, and the rubber arm support 64 is arranged in an arc structure to be suitable for placing an arm; the The lower end of the bracket 61 is rotatably connected to the pin shaft 63, and the pin shaft 63 is also rotatably connected with a second hinge 62, and the second hinge 62 is fixedly connected with the lower armrest 4; the rubber arm support 64 is accompanied by the bracket 61 rotate together around the pin shaft 63, so that the rubber arm support 64 can be turned up and down; when the rubber arm support 64 is turned to the top, the bottom of the rubber arm support 64 is supported and fixed on the top of the lower glass door 4, so that the operator can rest his arms on the top of the lower glass door 4. Fatigue is relieved on the rubber arm rest 64 , so that the operator is in a more comfortable state; when the rubber arm rest 64 is turned downward, the entire support arm assembly 6 is rotated to the lower armrest 4 , which does not prevent the upper glass door 1 from being closed.

A locking mechanism 5 is arranged between the upper glass door 1 and the lower glass door 3, and the locking mechanism 5 is used for locking and fixing the upper glass door 1 and the lower glass door 3; the locking mechanism 5 includes a locking mechanism 5. The handle 51 and the locking seat 52, the locking seat 52 is fixedly arranged on the top of the lower glass door 3, and the locking seat 52 is provided with a card slot 521; one end and the upper part of the card slot 521 are open; The lower part of the locking handle 51 is provided with a block 511 ; the block 511 is inserted into the card slot 521 to lock and fix the upper glass door 1 and the lower glass door 3 .

The locking handle 51 is rotatably connected to the locking pin 53 , and the other end of the locking pin 53 is fixedly connected to the upper glass door 1 .

A door stop structure 7 is also arranged between the upper glass door 1 and the lower glass door 3, the door stop structure 7 includes a guard plate 72, the upper part of the guard plate 72 is inserted and fixed with the bottom of the upper glass door 1, and It is sealed by sealant; specifically, the upper part of the protective plate 72 is provided with an opening groove 721, the cross section of the opening groove 721 is a U-shaped structure, and the bottom of the upper glass door 1 is inserted and fixed in the opening groove 721, And sealed with sealant to ensure tightness.

An anti-collision strip 71 is provided on the inner side of the upper part of the guard plate 72. Specifically, the inner side of the opening slot 721 is provided with a T-shaped groove 722, and the T-shaped groove 722 opens horizontally toward the inner side of the cab; the The anti-collision strip 71 is clamped and fixed in the T-shaped groove 722, and the anti-collision strip 71 includes a connecting part 711 and a buffer part 712; the connecting part 711 is clamped and fixed in the T-shaped groove 722, and the buffer part 712 is The bumper 712 is a semi-circular bulge, the interior of the buffer portion 712 is hollow, the anti-collision strip 71 of this structure can make the doorstop structure have better anti-collision, shock-absorbing and noise-reducing functions; the anti-collision strip 71 is made of hair Foam rubber material.

The lower part of the guard plate 72 is provided with a lower baffle plate 723, the lower baffle plate 723 is lower than the top of the lower glass door 3 by a certain distance, and the lower baffle plate 723 is arranged on the outer side of the lower glass door 3; it can prevent rainwater from entering the cab , play the role of waterproof.

A limiting plate 73 is fixed on the inner side of the upper part of the lower glass door 3 , and the limiting plate 73 includes two vertical plates 731 parallel to each other, and the two vertical plates 731 are connected by an inclined plate 732 ; 731 is bonded and fixed with the lower glass door 3; when the cab door is closed, the upper vertical plate 731 is in limited contact with the buffer portion 712 of the bumper bar 71, so as to achieve the effect of buffering, shock absorption and noise reduction.

The invention can expand the side view of the cab, avoid driving blind spots, can observe the side engineering conditions, improve the work quality, high work efficiency and improve driving safety; the window can be enlarged, the lighting of the cab can be improved, the space limitation can be avoided, and The ergonomic design of the cab door can relieve fatigue and improve the driving experience and comfort; it can improve the sealing performance of the cab door after it is closed, effectively isolate the inside and outside of the cab, and improve the security and waterproofness; it can have a buffer It can reduce the vibration and noise generated when the door is closed.

The above are examples of the best embodiments of the present invention, and the parts not described in detail are the common knowledge of those of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present invention is also within the protection scope of the present invention.

Claims (10)

1. A construction machinery cab double glass door structure, characterized in that it comprises an upper glass door (1) and a lower glass door (3), the upper glass door (1) and the lower glass door (3) being opened independently of each other The upper glass door (1) and the lower glass door (3) are fixedly installed on the door frame (9) through the first hinge (8); the lower glass door (3) is provided with a lower handrail (4) ), the upper part of the lower armrest (4) is fixedly provided with a support arm assembly (6). 2. The construction machinery cab double glass door structure according to claim 1, characterized in that: the upper glass door (1) and the lower glass door (3) are locked by a locking mechanism (5) are fixed together; the locking mechanism (5) includes a locking handle (51) and a locking seat (52), the locking seat (52) is fixedly arranged on the top of the lower glass door (3), and the locking The seat (52) is provided with a card slot (521); one end and the upper part of the card slot (521) are open. 3. The construction machinery cab double glass door structure according to claim 1, characterized in that: a door stop structure (7) is further arranged between the upper glass door (1) and the lower glass door (3). , the door stop structure (7) comprises a guard plate (72), the upper part of the guard plate (72) is provided with an opening groove (721), and the bottom of the upper glass door (1) is inserted and fixed in the opening groove (721). 721) within. 4. A construction machinery cab double glass door structure according to claim 3, characterized in that: an anti-collision strip (71) is provided on the inner side of the upper part of the protective plate (72), and the anti-collision strip (71) ) includes a buffer portion (712); the buffer portion (712) is a semi-circular protrusion, and the buffer portion (712) is hollow inside. 5 . The double glass door structure of a construction machinery cab according to claim 2 , characterized in that: a block ( 511 ) is provided at the lower part of the locking handle ( 51 ); the block ( 511 ) is inserted into Lock the upper glass door (1) and the lower glass door (3) in the card slot (521). 6 . The double glass door structure of a construction machinery cab according to claim 1 , wherein the support arm assembly ( 6 ) comprises a bracket ( 61 ), and the upper end of the bracket ( 61 ) is fixedly connected with a rubber Arm support (64), the rubber arm support (64) is arranged in an arc structure; the lower end of the bracket (61) is rotatably connected to the pin shaft (63), and the pin shaft (63) is also rotatably connected There is a second hinge (62), the second hinge (62) is fixedly connected with the lower armrest (4); the rubber arm support (64) rotates around the pin shaft (63) together with the bracket (61). 7. The construction machinery cab double glass door structure according to claim 2, characterized in that: the locking handle (51) is rotatably connected to a locking pin (53), and the locking pin The other end of (53) is fixedly connected with the upper glass door (1). 8. The construction machinery cab double glass door structure according to claim 3, characterized in that: a lower baffle plate (723) is provided at the lower part of the guard plate (72), and the lower baffle plate (723) A certain distance is lower than the top of the lower glass door (3), and the lower baffle plate (723) is arranged on the outer side of the lower glass door (3). 9 . The double glass door structure of a construction machinery cab according to claim 1 , wherein: an upper handrail (2) is installed on the upper glass door (1); the upper part of the upper handrail (2) It is hinged with the bottom of the gas spring (10); the protruding end of the gas spring (10) is hinged with the door frame (9), and the opening and closing of the upper glass door (1) is assisted by the gas spring (10). 10. The construction machinery cab double glass door structure according to claim 4, characterized in that: a limit plate (73) is fixedly arranged on the inner side of the upper part of the lower glass door (3), and the limit plate ( 73) Comprising two vertical plates (731) parallel to each other, the two vertical plates (731) are connected by an inclined plate (732); the lower vertical plate (731) is bonded and fixed to the lower glass door (3); When the cab door is closed, the upper riser (731) is in limited contact with the buffer portion (712) of the crash bar (71).

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