阅读说明：本技术 舱门可转动扶手 (Armrest with rotatable cabin door ) 是由 许志恒 王国俊 李鹏 许军 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种舱门可转动扶手,包括扶手杆、第一横杆、第二横杆、2个法兰座和铰接装置,两根横杆一端分别与扶手杆中部和下部垂直固定连接。第一法兰座固定在舱门内侧面中部上,第二法兰座固定在舱门内侧面下端上,第二横杆另一端通过设置在第一法兰座的正下方的铰接装置与舱门内侧面下部铰接,铰接装置中心与2个法兰座中心连线构成以铰接装置中心为顶点且顶角为钝角的等腰三角形结构。倾斜状态扶手杆的倾斜角度与登舱梯倾斜角度匹配。本发明结构简单,加工方便,制造成本低。无论在垂直状态还是使用状态,扶手杆均能可靠地锁定在对应的法兰座上,解决了上下舱时舱门扶手高不易握扶的问题,提高了舱门扶手使用的安全性。(The invention discloses a cabin door rotatable handrail which comprises a handrail rod, a first cross rod, a second cross rod, 2 flange seats and a hinge device, wherein one end of each of the two cross rods is respectively and fixedly connected with the middle part and the lower part of the handrail rod in a vertical mode. The first flange seat is fixed on the middle part of the inner side surface of the cabin door, the second flange seat is fixed on the lower end of the inner side surface of the cabin door, the other end of the second cross rod is hinged with the lower part of the inner side surface of the cabin door through a hinge device arranged right below the first flange seat, and the center of the hinge device and the center connecting line of the 2 flange seats form an isosceles triangle structure which takes the center of the hinge device as a vertex and takes the vertex angle as an obtuse angle. The inclination angle of the grab rail in the inclined state is matched with the inclination angle of the boarding ladder. The invention has simple structure, convenient processing and low manufacturing cost. No matter in a vertical state or a using state, the grab rail can be reliably locked on the corresponding flange seats, the problem that the door handrail is high and is not easy to hold when the cabin door is moved up and down is solved, and the use safety of the door handrail is improved.)

1. A cabin door rotatable handrail comprises a handrail rod, a first cross rod and a second cross rod, wherein the handrail rod is made of steel pipes, and one end of the first cross rod and one end of the second cross rod are respectively and vertically welded and fixed with the middle part and the lower part of the handrail rod; the device is characterized by further comprising 2 flange seats and a hinge device, wherein a first flange seat in the 2 flange seats is fixed on the middle part of the inner side face of the cabin door and corresponds to the other end of the first cross rod when the handrail is in a vertical state; the second flange seat is fixed on the lower end of the inner side surface of the cabin door and corresponds to the other end of the first cross rod when the handrail rotates to an inclined state; the flange seat comprises a chassis and a flange seat stud extending outwards from the center of the chassis, and the flange seat stud is fixedly connected with the other end of the first cross rod of the grab bar in a vertical state or fixedly connected with the other end of the first cross rod of the grab bar in a downward inclination state through a connecting mechanism; the other end of the second cross rod is hinged with the lower part of the inner side surface of the cabin door through a hinge device, the hinge device is arranged right below the first flange seat, and the connecting line of the center of the hinge device and the centers of the 2 flange seats forms an isosceles triangle structure which takes the center of the hinge device as a vertex and the vertex angle as an obtuse angle; the inclination angle of the grab rail in the inclined state is matched with the inclination angle of the boarding ladder.

2. The rotatable hatch handrail of claim 1, wherein the connection mechanism comprises a connection stud, a threaded sleeve and a cap, a polished rod at one end of the connection stud is inserted and welded into the other end of the first cross bar, and the thread at the other end of the connection stud is of the same specification as the thread of the flange seat stud; the threaded sleeve is connected with the stud of the flange seat and the other end of the connecting stud through internal threads, the end face of one end of the threaded sleeve is abutted against the chassis of the flange seat, and the stud of the flange seat is abutted against the end face of the connecting stud; the nut cap is screwed on the connecting stud, the end face of the other end of the threaded sleeve and the end face of one end of the nut cap are abutted against each other, and the end face of the other end of the nut cap is adjacent to the grab rail.

3. The rotatable hatch armrest according to claim 2, characterized in that the cap has a through hole at the other end, and the other end of the first cross bar extends through the through hole.

4. The rotatable hatch armrest according to claim 1, characterized in that said hinge means comprises a fixed flange, a hinge shaft and a hinge shaft position-limiting mechanism, said fixed flange being located directly below the first flange seat, one end of the fixed flange being fixed to the lower portion of the hatch door, the other end of the fixed flange having a centrally outwardly extending sleeve, the radially extending head of one end of the hinge shaft being embedded in a positioning slot in one side of the fixed flange, the other end of the hinge shaft being in clearance fit with the sleeve at the other end of the fixed flange; the end head of the other end of the articulated shaft is inserted into the other end of the second transverse rod, and the articulated shaft is fixedly connected with the second transverse rod through a plurality of screws which respectively transversely penetrate through the second transverse rod and are screwed into the other end of the articulated shaft; the articulated shaft limiting mechanism is arranged between the middle part of the sleeve and the middle part of the articulated shaft.

5. The rotatable hatch armrest of claim 4 wherein the hinge shaft limiting mechanism comprises a steel ball, a compression spring counter bore and a limiting hole located in the middle of the sleeve, the diameter of the limiting hole being smaller than the diameter of the steel ball; the pressure spring is arranged in the pressure spring counter bore, two ends of the pressure spring are respectively supported against the bottom of the pressure spring counter bore and one side of the steel ball, and the other side of the steel ball is supported against the inner side surface of the limiting hole.

Technical Field

The invention relates to an upper cabin and lower cabin auxiliary device of a vehicle-mounted shelter, in particular to a handrail used when a user climbs a cabin from a cabin climbing ladder, and belongs to the technical field of vehicle accessories.

Background

The vehicle-mounted shelter is fixed on a vehicle platform, has stronger maneuverability, and is used for field operation, communication command and logistics support. The off-road vehicle chassis is often used as the vehicle shelter, and the height of the shelter loaded on the off-road vehicle chassis is higher from the ground due to the higher off-road vehicle chassis. After the off-road vehicle is parked, a hanging ladder for boarding is usually temporarily installed on the lower side of the cabin door, and meanwhile, the handrail of the hanging ladder is installed on the inner side surface of the cabin door. Because the lower end of the handrail is higher than the ground, the person can get on the vehicle through the boarding ladder without the handrail and can grasp the handrail, and often the person needs to move to the middle part of the hanging ladder to grasp the handrail. The handrail can not be grasped in the whole process when the driver gets on the bus, which brings inconvenience and insecurity to the driver.

Disclosure of Invention

The invention aims to provide a rotatable handrail of a cabin door, which can grip the handrail in the whole process and improve the safety of boarding.

The purpose of the invention is realized by the following technical scheme:

a cabin door rotatable handrail comprises a handrail rod, a first cross rod, a second cross rod, 2 flange seats and a hinge device, wherein the handrail rod is made of steel pipes; a first flange seat in the 2 flange seats is fixed on the middle part of the inner side surface of the cabin door and corresponds to the other end of the first cross rod when the handrail is in a vertical state; the second flange seat is fixed on the lower end of the inner side surface of the cabin door and corresponds to the other end of the first cross rod when the handrail rotates to an inclined state; the flange seat comprises a chassis and a flange seat stud extending outwards from the center of the chassis, and the flange seat stud is fixedly connected with the other end of the first cross rod of the grab bar in a vertical state or fixedly connected with the other end of the first cross rod of the grab bar in a downward inclination state through a connecting mechanism; the other end of the second cross rod is hinged with the lower part of the inner side surface of the cabin door through a hinge device, the hinge device is arranged right below the first flange seat, and the connecting line of the center of the hinge device and the centers of the 2 flange seats forms an isosceles triangle structure which takes the center of the hinge device as a vertex and the vertex angle as an obtuse angle; the inclination angle of the grab rail in the inclined state is matched with the inclination angle of the boarding ladder.

The object of the invention is further achieved by the following technical measures.

Furthermore, the connecting mechanism comprises a connecting stud, a threaded sleeve and a cap, a polished rod at one end of the connecting stud is inserted and welded into the other end of the first cross rod, and the thread at the other end of the connecting stud is the same as the thread of the stud of the flange seat in specification; the threaded sleeve is connected with the stud of the flange seat and the other end of the connecting stud through internal threads, the end face of one end of the threaded sleeve is abutted against the chassis of the flange seat, and the stud of the flange seat is abutted against the end face of the connecting stud; the nut cap is screwed on the connecting stud, the end face of the other end of the threaded sleeve and the end face of one end of the nut cap are abutted against each other, and the end face of the other end of the nut cap is adjacent to the grab rail. The nut cap is provided with a through hole on the other end face, and the other end of the first cross rod penetrates out of the through hole.

Furthermore, the hinge device comprises a fixed flange, a hinge shaft and a hinge shaft limiting mechanism, wherein the fixed flange is positioned right below the first flange seat, one end of the fixed flange is fixed on the lower part of the cabin door, a sleeve extends outwards from the center of the other end of the fixed flange, the head of one end of the hinge shaft, which extends in the radial direction, is embedded in a positioning groove in one side of the fixed flange, and the other end of the hinge shaft is in clearance fit with the sleeve at the other end of the fixed flange; the end head of the other end of the articulated shaft is inserted into the other end of the second transverse rod, and the articulated shaft is fixedly connected with the second transverse rod through a plurality of screws which respectively transversely penetrate through the second transverse rod and are screwed into the other end of the articulated shaft; the articulated shaft limiting mechanism is arranged between the middle part of the sleeve and the middle part of the articulated shaft.

Furthermore, the hinge shaft limiting mechanism comprises a steel ball, a pressure spring counter bore and a limiting hole positioned in the middle of the sleeve, and the diameter of the limiting hole is smaller than that of the steel ball; the pressure spring is arranged in the pressure spring counter bore, two ends of the pressure spring are respectively supported against the bottom of the pressure spring counter bore and one side of the steel ball, and the other side of the steel ball is supported against the inner side surface of the limiting hole.

The structure that the connecting mechanisms arranged at the ends of the first cross rods are respectively and fixedly connected with the flange seats at two positions on the inner side surface of the cabin door and the structure that the lower ends of the grab bars rotate around the center of the hinge device enable the grab bars to rotate around the center of the hinge device and respectively fix the vertical storage state or the downward inclined use state. Simple structure, convenient processing and low manufacturing cost. The grab rail can be reliably locked on the corresponding flange seat no matter in a vertical state or in a use state of rotating to incline downwards, so that the boarding ladder and the grab rail are in proper positions, the problem that the handrail of the cabin door is high and is not easy to hold when the cabin door is moved up and down is solved, and the use safety of the handrail of the cabin door is improved.

Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the storage and use states of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is an enlarged view of section I of FIG. 2;

fig. 4 is an enlarged view of a portion ii of fig. 2.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

In the description of the invention, terms like "upper", "lower", "left", "right", "first" and "second", etc., indicating an orientation, a position and an order are based on the orientation shown in the drawings or are used only for simplifying the description, but do not indicate or imply that the invention must have a specific orientation, a position and an order.

As shown in fig. 1 to 4, the invention comprises a grab rail 1 made of steel pipes, a first cross bar 2, a second cross bar 3, 2 flange seats and a hinge device 4, wherein the right end of the first cross bar 2 and the right end of the second cross bar are respectively and vertically welded and fixed with the middle part and the lower part of the grab rail 1. The first flange seat 51 of the 2 flange seats is fixed on the middle of the inner side surface of the cabin door 10 and corresponds to the left end of the first cross bar 2 when the armrest is in a vertical state. The second flange seat 52 is fixed to the lower end of the inner side surface of the door 10 in fig. 1, and corresponds to the left end position of the first cross bar 2 when the armrest is rotated to the downward inclined state. The flange seat comprises a chassis 511 and a flange seat stud 512 extending outwards from the center of the chassis 511, and the flange seat stud 512 is fixedly connected with the left end of the first cross bar 2 of the vertical handrail or the left end of the first cross bar 2 of the downward-inclined handrail through a connecting mechanism 6, so that the handrail rod 1 is vertically fixed on the inner side surface of the cabin door 10 when the cabin door 10 is closed; when the hatch door 10 is opened, the grab rail 1 is rotated downwards to be in a use state of being obliquely fixed on the inner side surface of the hatch door 10.

As shown in fig. 3, the connecting mechanism 6 comprises a connecting stud 61, a threaded sleeve 62 and a cap 63, a polish rod 611 at the right end of the connecting stud 61 is inserted and welded into the left end of the first cross bar 2, and the thread at the left end of the connecting stud 61 has the same specification as the thread of the flange base stud 512. The threaded sleeve 62 is connected with the left end of the flange seat stud 512 and the left end of the connecting stud 61 through internal threads, the end face of the left end of the threaded sleeve 62 abuts against the base plate 511 of the flange seat, and the end faces of the flange seat stud 512 and the connecting stud 61 abut against each other. The cap 62 is screwed on the connecting stud 61, the end surface of the right end of the threaded sleeve 62 and the end surface of the left end of the cap 63 abut against each other, and the end surface of the right end of the cap 63 is adjacent to the grab rail 1. The right end face of the cap 63 is provided with a through hole 631, and the right end of the first cross bar 2 penetrates through the through hole 631. The cap 63 is put on before welding the first rail 2. Knurling is formed on the outer peripheral surfaces of the screw sleeve 62 and the cap 63, so that the screw sleeve 62 and the cap 63 can be screwed or loosened manually.

As shown in fig. 2, the right end of the second cross bar 3 is hinged to the lower portion of the inner side surface of the cabin door 10 through the hinge device 4, the hinge device 4 is arranged under the first flange seat 51, and the connecting line of the center of the hinge device 4 and the center of the 2 flange seats forms an isosceles triangle structure which takes the center of the hinge device 4 as a vertex and has an obtuse vertex angle, so that the first cross bar 2 is fixedly connected with the first flange seat 51 and the second flange seat 51 respectively, and the vertical storage state and the rotation of the grab bar 1 into the inclined use state are converted. The inclination angle of the grab rail 1 in the inclined state is matched with the inclination angle of the boarding ladder, so that personnel can grab the grab rail 1 at any time when getting on or off the boarding ladder, and reliable safety guarantee is provided.

As shown in fig. 1 and 4, the hinge device 4 includes a fixing flange 41, a hinge shaft 42 and a hinge shaft limiting mechanism 43, the fixing flange 41 is located right below the first flange seat 51, the left end of the fixing flange 41 is fixed on the lower portion of the cabin door 10 through 4 fastening screws 44, a sleeve 411 extends outwards from the center of the right end of the fixing flange 41, a head 421 extending radially from the left end of the hinge shaft 42 is embedded in a positioning groove 412 in the left side of the fixing flange 41, the left end of the hinge shaft 42 is in clearance fit with the sleeve 411 at the left end of the fixing flange 41, the right end of the hinge shaft 42 is inserted into the left end of the second cross bar 52, and the hinge shaft 42 is fixedly connected with the second cross bar 2 through 4 screws 45 respectively crossing the second cross bar 3 and screwed into the right end of the hinge shaft 42. The hinge shaft limiting mechanism 43 is arranged between the middle of the sleeve 411 and the middle of the hinge shaft 42. After the second cross rod 2 of the handrail is released from the fixed connection with the corresponding flange seat, the handrail rod 1 can be easily rotated around the center of the hinge device 4 to an inclined use state or a vertical storage state.

The hinge shaft limiting mechanism 43 of the hinge device 4 comprises a steel ball 431, a pressure spring 432, a pressure spring counter bore 422 and a limiting hole 413 positioned on the middle part of the sleeve 411, and the diameter of the limiting hole 413 is smaller than that of the steel ball 431. The pressure spring 432 is positioned in the pressure spring counter bore 422, two ends of the pressure spring 432 are respectively abutted against the bottom of the pressure spring counter bore 422 and one side of the steel ball 431, and the other side of the steel ball 431 is abutted against the inner side face of the limiting hole 413. The steel balls 431 of the hinge shaft limiting mechanism 43 play a limiting role in limiting the rotation of the hinge shaft 42, so that the hinge shaft 42 can be effectively prevented from axially moving, the accuracy of the rotation of the grab rail 1 is improved, the threaded sleeve 62 and the cap 63 can be conveniently and quickly screwed on the connecting stud 61 and the corresponding flange seat stud 512, and the fixed connection of the first cross rod 2 and the first flange seat 51 or the second flange seat 52 is realized.

The using process of the invention is as follows: when a person needs to get on or off the cabin, the hanging ladder is firstly hooked under the fixed cabin door 10, and then the cabin door 10 is opened and locked at the opened position. Then the cap 63 and the screw sleeve 62 are respectively loosened, the connection between the flange base stud 512 of the first flange base 51 and the connecting stud 61 is released, the grab bar 1 can rotate clockwise around the center of the hinge shaft 42 to a downward inclined state until the end surface of the connecting stud 61 aligns with the end surface of the flange base stud 512 of the second flange base 51, and then the screw sleeve 62 and the cap 63 are sequentially screwed on the flange base stud 512 of the second flange base 51, so that the grab bar 1 is fixed in an inclined use state after rotating, and a person can safely get on or off the cabin by hanging a ladder, and the use is very convenient.

In addition to the above embodiments, the present invention has other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.