Double glass door structure for engineering machinery cab

Abstract

The invention discloses a double glass door structure for an engineering machinery cab, comprising an upper glass door and a lower glass door, which are opened and closed independently; the upper glass door and the lower glass door are both fixedly mounted on a door frame by a first hinge; a lower handrail is mounted on the lower glass door, and a supporting arm assembly is fixedly arranged on the upper part of the lower handrail; the invention can expand the side field of view of the cab, avoid blind spots in driving, observe the engineering conditions on the side, improve the quality of operation, increase work efficiency and improve driving safety; the window can be enlarged, the lighting of the cab can be improved, space limitation can be avoided, and the cab door conforms to ergonomic design, can relieve fatigue, and improve driving experience and comfort; the sealing of the cab door after closing can be improved, the inside and outside of the cab can be effectively isolated, and the insulation and waterproofness can be improved; the invention can have a buffering effect, and reduce the vibration and noise generated when the door is closed.

Description

Technical Field

[0001] The invention relates to a double glass door structure for an engineering machinery cab, belonging to the technical field of cab door structures. Background Art

[0002] The cab is an important part of the construction machinery body and is where professional drivers work day and night. Its structure is directly related to the driver's safety, work efficiency and health. The cab generally adopts a metal thin shell structure and is flexibly connected to the frame. It does not bear load and is a non-load-bearing body. The existing cab door is a metal welded structure. The cab door of this structure only has glass doors and windows on the upper part. This type of cab door has the following shortcomings:

[0003] 1. The existing cab door has limited side vision, and there are blind spots for driving. The engineering status cannot be observed during operation, which leads to low work efficiency and low safety.

[0004] 2. The lighting in the cab is poor, and the operator's driving experience is poor.

[0005] 3. The cab doors and windows of existing engineering machinery are at most two small sliding structures. The windows are too small, the operator's space is limited, and the arms cannot be placed outside the window, which is not ergonomic.

[0006] 4. The existing door stop structure of the cab door has poor sealing performance, cannot isolate the inside and outside of the cab, has poor thermal insulation and waterproof performance, and has large vibration and noise when the door is closed, and has poor cushioning and shock absorption performance.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a double glass door structure for the cab of engineering machinery in view of the above shortcomings, which can expand the side field of view of the cab, avoid blind spots when driving, observe the side engineering conditions, improve the work quality, increase work efficiency and improve driving safety; the window can be enlarged, the lighting of the cab can be improved, and space limitation can be avoided. The cab door is ergonomically designed, which can relieve fatigue and improve driving experience and comfort; the sealing of the cab door after closing can be improved, effectively isolating the inside and outside of the cab, and improving the insulation and waterproofness; it can have a buffering effect to reduce the vibration and noise generated when the door is closed.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions: a double glass door structure of an engineering machinery cab, comprising an upper glass door and a lower glass door, wherein the upper glass door and the lower glass door are opened and closed independently; the upper glass door and the lower glass door are both fixedly mounted on the door frame by a first hinge; a lower handrail is mounted on the lower glass door, and a support arm assembly is fixedly arranged on the upper part of the lower handrail.

[0010] Furthermore, 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, the locking seat is fixedly arranged on the top of the lower glass door, and a card slot is arranged on the locking seat; one end of the card slot and the upper opening.

[0011] Furthermore, a door stop structure is provided between the upper glass door and the lower glass door, and the door stop structure includes a guard plate, an upper portion of the guard plate is provided with an open groove, and the bottom of the upper glass door is inserted and fixed in the open groove.

[0012] Furthermore, an anti-collision strip is arranged on the inner side of the upper part of the guard plate, and the anti-collision strip includes a buffer portion; the buffer portion is a semicircular protrusion, and the interior of the buffer portion is hollow.

[0013] Furthermore, a stopper is provided at the lower part of the locking handle; the stopper is inserted into the card slot to lock and fix the upper glass door and the lower glass door.

[0014] Furthermore, the support arm assembly includes a bracket, the upper end of the bracket is fixedly connected to a rubber arm support, and the rubber arm support is arranged to be an arc-shaped structure; the lower end of the bracket is rotatably connected to a pin shaft, and the pin shaft is also rotatably connected to a second hinge, and the second hinge is fixedly connected to the lower armrest; the rubber arm support rotates around the pin shaft together with the bracket.

[0015] Furthermore, the locking handle is rotatably connected to the locking pin shaft, and the other end of the locking pin shaft is fixedly connected to the upper glass door.

[0016] Furthermore, a lower baffle is provided at the lower part of the guard plate, the lower baffle is lower than the top of the lower glass door by a certain distance, and the lower baffle is arranged on the outer side of the lower glass door.

[0017] Furthermore, an upper handrail is installed on the upper glass door; the upper part of the upper handrail is hinged to the bottom of the gas spring; the extended end of the gas spring is hinged to the door frame, and the gas spring assists the opening and closing of the upper glass door.

[0018] Furthermore, a limit plate is fixedly provided on the inner side of the upper part of the lower glass door, and the limit plate includes two sections of vertical plates parallel to each other, and the two sections of vertical plates are connected by an inclined plate; the lower vertical plate is adhesively fixed to the lower glass door; when the cab door is closed, the upper vertical plate is limited in contact with the buffer part of the anti-collision strip.

[0019] After adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] The present invention can expand the side field of view of the cab, avoid driving blind spots, observe the side engineering conditions, improve the work quality, increase work efficiency and improve driving safety; the window can be enlarged, the lighting of the cab can be improved, and space limitation can be avoided. The cab door is ergonomically designed, which can relieve fatigue and improve driving experience and comfort; the sealing of the cab door after closing can be improved, effectively isolating the inside and outside of the cab, and improving the insulation and waterproofness; it can have a buffering effect, reducing the vibration and noise generated when the door is closed.

[0021] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the glass door of the present invention in an open state;

[0024] Figure 3 is a schematic cross-sectional view of the locking mechanism;

[0025] Figure 4 is a schematic diagram of the bracket arm assembly;

[0026] Figure 5 yes Figure 4 Left view of

[0027] Figure 6 is a cross-sectional schematic diagram of a door stop structure;

[0028] In the figure,

[0029] 1-upper glass door, 2-upper armrest, 3-lower glass door, 4-lower armrest, 5-locking mechanism, 51-locking handle, 511-block, 52-locking seat, 521-slot, 53-locking pin, 6-support arm assembly, 61-bracket, 62-second hinge, 63-pin, 64-rubber arm support, 7-door stop assembly, 71-anti-collision strip, 711-connecting part, 712-buffer part, 72-guard plate, 721-opening groove, 722-T-slot, 723-lower baffle, 73-limiting plate, 731-vertical plate, 732-inclined plate, 8-first hinge, 9-door frame, 10-gas spring. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0031] Example 1 A double glass door structure for a construction machinery cab

[0032] like Figure 1-6As shown together, the present invention provides a double glass door structure for a cab of engineering machinery, including an upper glass door 1 and a lower glass door 3, wherein the upper glass door 1 and the lower glass door 3 are arranged up and down, and 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 both fixedly mounted on a door frame 9 by a first hinge 8.

[0033] An upper handrail 2 is installed on the upper glass door 1, and the opening and closing of the upper glass door 1 is achieved by pushing and pulling the upper handrail; the upper handrail 2 is an I-shaped structure formed by welding round tubes, and the upper part of the upper handrail 2 is hinged to the bottom of the gas spring 10; the extended end of the gas spring 10 is hinged to the door frame 9, and the gas spring 10 assists the opening and closing of the upper glass door 1.

[0034] The lower glass door 3 is provided with a lower handrail 4, and the lower glass door 3 is opened and closed 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 provided with a support arm assembly 6, and the support arm assembly 6 includes a bracket 61, and the upper end of the bracket 61 is fixedly connected to 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 lower end of the bracket 61 is rotatably connected to a pin shaft 63, and the pin shaft 63 is also rotatably connected to a second hinge 62 , the second hinge 62 is fixedly connected to the lower armrest 4; the rubber arm support 64 rotates around the pin 63 together with the bracket 61, so that the rubber arm support 64 can be turned upside down; when the rubber arm support 64 is turned upside down, the bottom support of the rubber arm support 64 is fixed on the top of the lower glass door 4, so that the operator can put his arm on the rubber arm support 64 to relieve fatigue and put the operator in a more comfortable state; when the rubber arm support 64 is turned down, the entire support arm assembly 6 rotates to the lower armrest 4, which does not hinder the closing of the upper glass door 1.

[0035] 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 to lock and fix the upper glass door 1 and the lower glass door 3; the locking mechanism 5 includes a locking handle 51 and a locking seat 52, and the locking seat 52 is fixedly arranged on the top of the lower glass door 3, and a card slot 521 is arranged on the locking seat 52; one end and an upper opening of the card slot 521; a stopper 511 is arranged at the lower part of the locking handle 51; the stopper 511 is inserted into the card slot 521 to lock and fix the upper glass door 1 and the lower glass door 3.

[0036] The locking handle 51 is rotatably connected to the locking pin shaft 53 , and the other end of the locking pin shaft 53 is fixedly connected to the upper glass door 1 .

[0037] A door stop structure 7 is also provided between the upper glass door 1 and the lower glass door 3, and the door stop structure 7 includes a guard plate 72, and the upper portion of the guard plate 72 is plugged and fixed to the bottom of the upper glass door 1 and sealed by a sealant; specifically, an opening groove 721 is provided at the upper portion of the guard plate 72, and the cross-section of the opening groove 721 is a U-shaped structure, and the bottom of the upper glass door 1 is plugged and fixed in the opening groove 721 and sealed by a sealant to ensure the sealing performance.

[0038] An anti-collision strip 71 is provided on the inner side of the upper part of the guard plate 72. Specifically, a T-slot 722 is provided on the inner side of the opening slot 721, and the opening of the T-slot 722 is horizontally facing the inner side of the cab; the anti-collision strip 71 is snap-fitted and fixed in the T-slot 722, and the anti-collision strip 71 includes a connecting portion 711 and a buffer portion 712; the connecting portion 711 is snap-fitted and fixed in the T-slot 722, and the buffer portion 712 is a semicircular protrusion, and the interior of the buffer portion 712 is hollow. The anti-collision strip 71 with this structure can make the door stop structure have better anti-collision, shock absorption and noise reduction functions; the material of the anti-collision strip 71 is foam rubber material.

[0039] A lower baffle 723 is provided at the lower part of the guard plate 72. The lower baffle 723 is lower than the top of the lower glass door 3 by a certain distance, and the lower baffle 723 is arranged on the outer side of the lower glass door 3; it can prevent rainwater from entering the cab and play a waterproof role.

[0040] A limiting plate 73 is fixedly provided on the inner side of the upper part of the lower glass door 3, and the limiting plate 73 includes two sections of vertical plates 731 parallel to each other, and the two sections of 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 vertical plate 731 is limitedly contacted with the buffer part 712 of the anti-collision strip 71 to achieve the effect of buffering, shock absorption and noise reduction.

[0041] The present invention can expand the side field of view of the cab, avoid driving blind spots, observe the side engineering conditions, improve the work quality, increase work efficiency and improve driving safety; the window can be enlarged, the lighting of the cab can be improved, and space limitation can be avoided. The cab door is ergonomically designed, which can relieve fatigue and improve driving experience and comfort; the sealing of the cab door after closing can be improved, effectively isolating the inside and outside of the cab, and improving the insulation and waterproofness; it can have a buffering effect, reducing the vibration and noise generated when the door is closed.

[0042] The above is an example of the best implementation of the present invention, and the parts not described in detail are common knowledge of ordinary technicians in the field. The protection scope of the present invention shall be based on the content of the claims, and any equivalent transformation based on the technical enlightenment of the present invention is also within the protection scope of the present invention.

Claims

1. A double glass door structure for a construction machinery cab, characterized by: The invention comprises an upper glass door (1) and a lower glass door (3), wherein 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 mounted on a door frame (9) via a first hinge (8); a lower handrail (4) is mounted on the lower glass door (3), and a support arm assembly (6) is fixedly mounted on the upper part of the lower handrail (4); The support arm assembly (6) comprises a bracket (61), the upper end of the bracket (61) is fixedly connected to a rubber arm support (64), and the rubber arm support (64) is arranged in an arc-shaped structure; the lower end of the bracket (61) is rotatably connected to a pin shaft (63), and the pin shaft (63) is also rotatably connected to a second hinge (62), and the second hinge (62) is fixedly connected to the lower armrest (4); the rubber arm support (64) rotates around the pin shaft (63) together with the bracket (61); A door stop structure (7) is further provided between the upper glass door (1) and the lower glass door (3), the door stop structure (7) comprising a guard plate (72), an upper portion of the guard plate (72) being provided with an opening groove (721), and the bottom of the upper glass door (1) being inserted and fixed in the opening groove (721); An anti-collision strip (71) is provided on the inner side of the upper portion of the guard plate (72), and the anti-collision strip (71) comprises a buffer portion (712); the buffer portion (712) is a semicircular protrusion, and the interior of the buffer portion (712) is hollow; A lower baffle (723) is provided at the lower part of the guard plate (72), the lower baffle (723) is lower than the top of the lower glass door (3) by a certain distance, and the lower baffle (723) is provided on the outer side of the lower glass door (3); A limiting plate (73) is fixedly arranged on the inner side of the upper portion of the lower glass door (3), the limiting plate (73) comprising two sections of mutually parallel vertical plates (731), the two sections of vertical plates (731) being connected via 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 vertical plate (731) is in limited contact with the buffer portion (712) of the anti-collision strip (71).

2. The double glass door structure of the engineering machinery cab as claimed in claim 1, characterized in that: The upper glass door (1) and the lower glass door (3) are locked and fixed together via a locking mechanism (5); the locking mechanism (5) comprises 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); a locking slot (521) is arranged on the locking seat (52); one end and an upper opening of the locking slot (521).

3. The double glass door structure of the engineering machinery cab as claimed in claim 2, characterized in that: A stopper (511) is provided at the lower portion of the locking handle (51); the stopper (511) is inserted into the card slot (521) to lock and fix the upper glass door (1) and the lower glass door (3).

4. The double glass door structure of the engineering machinery cab as claimed in claim 2, characterized in that: The locking handle (51) is rotatably connected to the locking pin shaft (53), and the other end of the locking pin shaft (53) is fixedly connected to the upper glass door (1).

5. The double glass door structure of the engineering machinery cab as claimed in claim 1, characterized in that: An upper handrail (2) is installed on the upper glass door (1); the upper portion of the upper handrail (2) is hinged to the bottom of a gas spring (10); the extended end of the gas spring (10) is hinged to a door frame (9), and the gas spring (10) assists the opening and closing of the upper glass door (1).

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