KR102325562B1 - Pit lifter for pressure resistant container inspection of hydrogen fuel cell vehicle and gas fueled vehicle - Google Patents

Abstract

The present invention is a square base installed on the bottom of the pit (PIT) of the recessed square space; a square main platform disposed on the upper side of the base; a main lifting means installed between the base and the main platform to raise and lower the main platform so as to be arranged side by side with the installation surface or to be hidden in the pit; and guide means for guiding the lifting operation of the main platform when the main platform is raised and lowered by the main lifting means, wherein the guide means is disposed on each of the left and right inner walls of the pit in the vertical direction n (however, n is an integer of 1 or more) and n rollers provided at each left and right both ends of the main platform and rotated along each rail. When the main platform is lowered while the inspector is on the main platform, it is possible to inspect and maintain the lower body of the vehicle. It is related to the pit lifter for the pressure vessel inspection of hydrogen electric vehicles and gas fueled vehicles.

Description

Pit lifter for pressure resistant container inspection of hydrogen fuel cell vehicle and gas fueled vehicle

In the present invention, after the main platform installed in the pit is placed side by side with the installation surface, the large vehicle passes the main platform, the lower body of the vehicle is on the upper side of the main platform, and the front and rear wheels are on both installation surfaces of the pit. When an inspector boards the main platform, the main platform is lowered so that the pressure-resistant containers and lower bodies of large vehicles such as hydrogen buses and CNG buses can be inspected and maintained. It is a technology related to a pit lifter for inspection of pressure-resistant containers of hydrogen electric vehicles and gas fuel vehicles that can prevent safety accidents by providing a separate locking means to increase the fixing force.

As a technology related to a lifter that can lift or lower a vehicle or inspector to inspect and maintain the upper and lower parts of the vehicle, Republic of Korea Utility Model Registration No. 20-0297479 (Registered on 28.11. ) The 『Vehicle Maintenance Lift』 is presented.

Document 1 discloses a support plate with front and rear first and second triangular poles installed on the upper part, a pair of central links that are axially coupled to the vertices of each of the first and second triangular poles so that they can be tilted from the center to the left and right, and each center A pair of tire supports provided on both sides of the link and allowing the vehicle to be seated, both ends are connected to the lever and shaft extending from one side of the pair of tire supports, and the center is shaft-coupled to the first triangular pole and installed a horizontal link, the rods are shaft-coupled to both sides of the central link, and the cylinder ends are shaft-coupled to the first and second triangular poles to be rotatably provided, and a lifting means for lifting and lowering the pair of tire supports at the same height By doing so, it is a technology related to a vehicle maintenance lift that is installed on the ground so that it is easy to mount the vehicle and effectively removes waste oil when changing the engine oil of the vehicle.

As another technique, Korean Patent Registration No. 10-0726177 (registered on Jun. 1, 2007, hereinafter referred to as 'Document 2') "vehicle lift device" is proposed.

Document 2 discloses a support part of 4 pillars having an upper end and a lower end fixed, a lifting unit attached to the support unit of each of the four pillars to enable free elevating and lowering, and a chain and hydraulic pressure attached to the lifting unit of each of the four pillars to vertically move the lifting unit In the vehicle lift apparatus comprising a cylinder, a hydraulic unit for driving the hydraulic cylinder, and a synchronized cylinder, the support portion includes a post, a guide rail vertically attached to the post, and a chain installed at upper and lower ends of the post. composed of rollers; The elevating unit includes a master, a pedestal attached to the upper end of the master to regulate the position of the lower part of the vehicle, a guide roller installed at the lower end of the master and slidingly coupled to the guide rail, and installed at the lower end of the master to the master consists of a locking device to prevent the fall of the; In the synchronized cylinder, four cylinders with the same outer diameter, connected in series, operate as a single shaft rod, supplying the same oil to the four hydraulic cylinders attached to the four posts, thereby minimizing the deviation in synchronization of each elevating part. It is a technology related to a vehicle lift device that improves the stability of the vehicle and supports each lifting section with a chain to improve the mechanical safety and durability, thereby increasing the product value.

As another technology, Republic of Korea Patent Registration No. 10-1382208 (Registered on April 1, 2014, hereinafter referred to as 'Document 3') 『Multi-Link Type Car Lift』 is proposed.

Document 3 relates to a link-type vehicle lift driven by a hydraulic cylinder, by installing separate links on both front and rear sides of a mounting frame on which the vehicle is mounted, and synchronizing the hydraulic cylinders of these links with each other. , large vehicles such as vans, buses, or trucks, which have a longer wheelbase than general passenger cars, can be mounted and lifted without difficulty. It is a technology related to a multi-link car lift that can dramatically reduce the manufacturing cost of a link-type lift for a large vehicle because the required output of the hydraulic cylinder to be driven can be reduced.

Document 1. Republic of Korea Utility Model Registration No. 20-0297479 (Registered on Dec. 28, 2002) Document 2. Korean Patent Registration No. 10-0726177 (Registered on Jun. 1, 2007) Document 3. Korean Patent Registration No. 10-1382208 (Registered on April 1, 2014)

An object of the present invention is to provide a pit lifter for inspecting pressure-resistant containers of hydrogen electric vehicles and gas fuel vehicles, provided with guide means to minimize left-right shaking and stably ascend and descend when lifting the main platform.

Furthermore, the present invention provides a state in which the main platform is arranged side by side with the installation surface, that is, in a state where a large vehicle can pass so that the lower body of the large vehicle can be placed on the upper side of the pit, to increase the fixing force of the main platform when passing a large vehicle. Accordingly, an object of the present invention is to provide a pit lifter for the inspection of pressure-resistant containers of hydrogen electric vehicles and gas fuel vehicles, which is equipped with a locking means to prevent safety accidents.

In addition, the present invention provides a separate sub-platform that is disposed on the upper surface of the main platform to enable inspection and maintenance of small vehicles through vertical lifting and lowering, and a stopper for limiting the descending movement distance of the descending main platform. An object of the present invention is to provide a pit lifter for inspection of pressure-resistant containers of hydrogen electric vehicles and gas fuel vehicles.

In order to solve the above problems, a pit lifter for testing a pressure vessel of a hydrogen electric vehicle and a gas fuel vehicle according to the present invention includes: a square base installed on the bottom of a pit (PIT) in a recessed square space; a square main platform disposed on the upper side of the base; a main lifting means installed between the base and the main platform to raise and lower the main platform so as to be arranged side by side with the installation surface or to be hidden in the pit; and guide means for guiding the lifting operation of the main platform when the main platform is raised and lowered by the main lifting means. and n is an integer greater than or equal to 1) each of which is installed, and n rollers are provided at each of the left and right ends of the main platform and rotated along the respective rails.

The pit lifter for inspection of pressure-resistant containers of hydrogen electric vehicles and gas fuel vehicles according to the present invention has the greatest effect of providing a complex type pit lifter capable of inspection and maintenance of small vehicles as well as large vehicles such as CNG buses.

1 is a three-dimensional configuration diagram showing a pit lifter for inspection of a pressure-resistant container of a hydrogen electric vehicle and a gas fuel vehicle according to the present invention.
2 is a front view showing a pit lifter for inspection of a pressure-resistant container of a hydrogen electric vehicle and a gas fuel vehicle according to the present invention;
3 is a side view showing a pit lifter for inspection of a pressure-resistant container of a hydrogen electric vehicle and a gas fuel vehicle according to the present invention;
4 is a configuration diagram showing a state in which a pit lifter for inspection of a pressure-resistant container of a hydrogen electric vehicle and a gas fuel vehicle according to the present invention is installed in the pit.
5 and 6 are diagrams showing the main platform lifting operation of the pit lifter.
Figure 7 is a partial enlarged configuration view for showing the operating state of the locking means.
8 is a front configuration view for showing the recess, the sub-platform and the sub-lifting means.
Fig. 9 is a partial side configuration view for showing the recess, the sub-platform and the sub-lifting means;

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

Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the configuration shown in the embodiments and drawings described in the present specification is only the most preferred embodiment of the present invention and does not represent all the technical spirit of the present invention, so various equivalents that can replace them at the time of the present application It should be understood that there may be water and variations.

With reference to FIG. 1, the first and second front link sides of the main lifting means are specified as front or front, and the first and second rear link sides are designated as rear or rear, and in FIG. 2 The direction of the roller side of the guide means located on the left is specified as left or left, and the roller side of the guide means located on the right is called right or right.

In addition, the pit (PIT) 1 referred to in the present invention is a rectangular pit recessed downward to the installation surface 2, and is a space in which the pit lifter of the present invention is installed.

1 to 9, the pit lifter for testing the pressure vessel of a hydrogen electric vehicle and a gas fuel vehicle according to the present invention is largely a base 10, a main platform 20, a main lifting means 30 and a guide means 40 .

Looking at each configuration,

the base 10

As shown in Figures 1 to 3,

A plurality of transverse and longitudinal frame angles 11 and 12 are interconnected to form a square, and a reinforcing rib plate 13 in the form of connecting the corner areas where the transverse and longitudinal frame angles 11 and 12 are connected to each other, front and rear side by side It comprises a relay frame angle 14 that interconnects the middle part of the arranged horizontal frame angle 11 or the vertical frame angle 12 arranged side by side on the left and right.

At this time, each of the angles 11, 12, 14 and the rib plate 13 are connected to each other by bolting or welding to form a single square base 10, and the base 10 is a pit ( 1) It is installed on the floor.

The main platform 20 is

As shown in Figures 1 to 3,

The lower body of the large vehicle is disposed on the upper side of the base 10 and is disposed on the upper side of the pit 1 while supporting a large vehicle such as a CNG (Compressed Natural Gas) bus passing through the pit 1 . It is for the inspector to board and inspect and maintain the lower body of the vehicle in

A plurality of horizontal and vertical H-beams 21 and 22 are interconnected to form a square, and a square main floor 23 connecting their respective upper surfaces, and a horizontal H-beam 21 arranged side by side or left and right side by side A reinforcing rib angle 24 that interconnects the middle portions of the arranged longitudinal H-beam 22, and a pair of transverse and longitudinal H-beams 21 and 22 arranged on the outer periphery are coupled to each of the four side channels ( 25) is included.

The main lifting means 30 is

As shown in Figures 1 to 6,

It is installed between the base 10 and the main platform 20 to elevate the main platform 20 up and down to be arranged side by side with the installation surface 1 or to be hidden into the pit 1,

A first front link 31, the lower end of which is hinged to the front left side of the base 10;

The lower end is hinged to the right front of the base 10, the upper end is hinged to the left front of the main platform 20, and the middle is hinged to the middle of the first front link 31 to form an X shape. 2 front link (32) and,

a first rear link 33 having a lower end hinged to the left rear side of the base 10;

The lower end is hinged to the right rear of the base 10, the upper end is hinged to the left rear of the main platform 20, and the middle is hinged with the middle of the first rear link 33 to form an X shape. 2 rear links 34,

a pair of bottom drive rollers 35 rotatably provided at the lower ends of the second front link 32 and the second rear link 34;

a pair of top drive rollers 36 rotatably provided at the upper ends of the second front link 32 and the second rear link 34;

a bottom guide 37 provided on the front and rear inner walls of the base 10 to guide the movement of each bottom drive roller 35;

a top guide 38 provided on the front and rear inner walls of the main platform 20 to guide the movement of the top drive roller 36;

A lifting driving unit 39 for folding or unfolding each of the front links 31 and 32 and the respective rear links 33 and 34

is made including

At this time, the lifting driving unit 39 is hinged to a bottom bracket 391 interconnecting the middle and lower regions of the first front link 31 and the first rear link 33 , and the bottom bracket 391 . and a lifting hydraulic cylinder body 393 that advances and retreats the lifting piston 392 by the selective supply of fluid, and the second front link 33 and the second rear link 34 interconnecting the upper middle region and a top bracket 394 , and an end of the lifting piston 392 is hinged to the top bracket 394 .

In the end, when the lifting piston 392 is advanced by the lifting hydraulic cylinder body 393, each link 31, 32, 33, 34 is spread out and erected, and the main platform 20 rises, and on the contrary, the lifting piston ( 392) When retracting, the main platform 20 descends as each of the links 31, 32, 33, and 34 is folded and laid down. At this time, each of the bottom drive roller 35 and each top drive roller 36 is guided left and right by the bottom guide 37 and the top guide 38 respectively to move.

The guide means 40 is

As shown in Figures 4 and 7,

It is for guiding the lifting operation of the main platform 20 when the main platform 20 is raised by the main lifting means 30,

Rails 41 installed n each (where n is an integer greater than or equal to 1) are installed on each of the left and right inner walls of the pit 1 in the vertical direction, and n are provided at each of the left and right ends of the main platform 20 and a roller 42 rotated along the respective rails 41 .

At this time, although it is shown that n is 2 throughout the drawings, this is an example and it can be changed to a larger quantity in consideration of the weight and size of a large vehicle such as a CNG bus that enters and passes through the main platform 20 It is self-evident that

And as shown in FIGS. 6 and 7 , the rail 41 is integrally formed to protrude along the central region of the long plate-shaped support plate 411 in contact with the inner wall of the pit 1 , and the support plate 411 ) is fixed by a number of chemical anchors embedded in the inner wall of the pit (1).

And as shown in FIGS. 6 and 7 , the roller 42 protrudes along both edges of the stepped portion 421 in contact with the rail 41 and the outer peripheral surface of the stepped portion 421 of the rail 41 . It consists of a pair of supports 422 surrounding both outer surfaces. As a result, as the roller 42 is rotated in a state in which the male and female are coupled to the rail 41, the separation of the roller 42 from the rail 41 is prevented, so that the main platform 20 is raised and lowered more stably. will be able to act.

On the other hand, the pit lifter according to the present invention further comprises a locking means (50),

The locking means 50 is

As shown in Figure 7,

In order to limit the downward movement of the main platform 20 in a state in which the main platform 20 is raised or a vehicle, etc. passes at this time,

A locking bracket 51 installed on the lower surface of the main platform 20 and having a distribution hole 511 penetrating left and right and the roller 42 is rotatably mounted at the lower end, and hidden in the distribution hole 511 It is made to include a locking head 52 arranged to be so, and a forward/backward driving unit 53 mounted on the locking bracket 51 to move the locking head 52 forward and backward.

At this time, the locking bracket 51 is fixed to the main platform 20 by bolting or welding, and in particular, the roller 42 is disposed on the main platform 20 at a position where it can be coupled to the rail 41 . do. In the present invention, it is arranged in each of the four corner areas of the main platform (20).

And the distribution hole 511 of the locking bracket 51 is a square hole, and the locking head 52 has a rectangular cross-sectional structure corresponding to the shape of the distribution hole 511 and inside the distribution hole 511 . When moving in and out, the end is disposed on the upper end of the rail 41 and the remaining part has a length sufficient to be disposed in the distribution hole 511 .

And the advance and retreat drive unit 53 is mounted on the locking bracket 51 and consists of a hydraulic cylinder body 532 for moving forward and backward by selectively supplying a fluid, and at the end of the forward and backward piston 531 . The locking head 52 is connected.

Therefore, as in [B] of FIG. 7, when the locking head 52 is advanced by the advance and retreat driving part 53 in a state where the main platform 20 is raised through the main lifting means 30, the locking head ( 52) is supported by the upper end of the rail 41, the main platform 20 can no longer descend and maintain a stopped state.

On the other hand, the pit lifter according to the present invention further comprises a recess (60), a sub-platform (70) and a sub-lifting means (80),

The recess 60 is

As shown in Figures 8 and 9,

It consists of a rectangular space structure formed to be concave downward while being arranged side by side in a region spaced apart from the front and rear on the upper surface of the main platform 20, and a pair is provided.

The sub-platform 70 is

As shown in Figures 8 and 9,

It is disposed to be hidden in each of the recesses 60 and is for supporting the rocker panel of the vehicle,

A pair is provided by having a rectangular plate-shaped structure corresponding to the space of each recess 60 or having a size smaller than this.

At this time, the sub-platform 70 may be formed of a sub-floor 71 of left and right long squares. A plurality of H beams and angles are mounted on the lower portion of the sub-floor 71 to provide durability to the sub-floor 71 . can increase

The sub-lifting means 80 is

As shown in Figures 8 and 9,

It is installed between each recess 60 and each sub-platform 70 to elevate each sub-platform 70 up and down,

A pair of first sub-bottom links 81, the lower ends of which are hinged before and after the left side of the recess 60;

A pair of second sub-bottom links 82, the lower ends of which are hinged before and after the right side of the recess 60, and the middle ends of each of the first sub-bottom links 81 are hinged to each other to form an X shape;

A pair of first sub-top links 83, the lower end of which is hinged to the upper end of each of the first sub-bottom links 81;

A pair of second sub-top links 84 having a lower end hinged to the upper end of each of the second sub-bottom links 82, and a middle end hinged with the middle end of each of the first sub-top links 83 to form an X shape. )Wow,

A pair of sub-bottom drive rollers 85 rotatably provided at the lower end of each of the second sub-bottom links 82;

A pair of sub-top drive rollers 86 rotatably provided on the upper end of each of the second sub-top links 84;

a sub-bottom guide 87 provided on the front and rear inner walls of the recess 60 to guide the movement of each sub-bottom drive roller 85;

a sub-top guide 88 provided on the front and rear inner walls of the sub-platform 70 to guide the movement of each sub-top drive roller 86;

A sub-lifting driving unit 89 for folding or unfolding each of the sub-bottom links 81 and 82 and the respective sub-top links 83 and 84

is made including

At this time, the sub-lifting driving unit 89 is hinge-coupled to the sub-bottom bracket 891 interconnecting the lower ends of each of the first sub-bottom links 81 and the sub-bottom bracket 891, and by selectively supplying a fluid. It consists of a sub-lifting inlet cylinder body 893 that advances and retreats the sub-lifting piston 892, and a sub-top bracket 894 interconnecting the middle and lower regions of each of the second sub-top links 84. An end of the sub-lifting piston 892 is hinged to the sub-top bracket 894 .

Eventually, when the sub-lifting piston 892 is advanced by the sub-lifting hydraulic cylinder body 893, each of the links 81, 82, 83, 84 is spread out and erected, and the sub-platform 70 rises, and vice versa. When the lifting piston 892 is retracted, each of the links 81 , 82 , 83 , 84 is folded and laid down, and the sub-platform 70 descends. At this time, each of the sub-bottom drive rollers 85 and each of the sub-top drive rollers 86 are guided and moved left and right by the sub-bottom guide 87 and the sub-top guide 88, respectively.

On the other hand, the pit lifter according to the present invention further comprises a stopper (90),

The stopper 90 is

As shown in Figure 5,

It is installed on the base 10 and is for supporting the main platform 20 in a state in which the main platform 20 is descended through the main lifting means 30,

A stopper head 91 of a circular plate, a cylindrical rod 92 connected to the central region of the lower surface of the stopper head 91, and the rod 92 are accommodated therein and the inside of the base 10 by bolting or the like. and a stopper body 93 installed on the floor.

At this time, two or more nuts 931 into which the rod 92 is inserted are integrally formed at the upper end of the stopper body 93, and as a spiral portion is formed on the outer periphery of the rod 92, the rod 92 is formed. In a state of being inserted into the stopper body 93 , the spiral portion of the rod 92 is fastened to each of the nuts 931 . As a result, it is possible to adjust the vertical height of the rod 92 from the stopper body 93 , and through this, it is possible to set the downward limiting distance of the main platform 20 .

The pit lifter having the above configuration restricts the lowering movement of the main platform 20 through the locking means 50 in a state where the main platform 20 is raised so as to be parallel to the installation surface 2, then a CNG bus, etc. of the large vehicle passes through the main platform 20 so that the front and rear wheels of the vehicle are on both installation surfaces 2 of the pit 1 and the lower body of the vehicle is located on the upper side of the pit 1, ), the inspector can check and maintain the lower body of the large vehicle by releasing the locking means 60 and lowering the main platform 20 thereafter.

Similarly, in the case of a small vehicle, after restricting the downward movement of the main platform 20 through the locking means 50 in a state in which the main platform 20 is raised so as to be parallel to the installation surface 2, the main platform ( 20), the sub-platform 70 rises and lifts the small vehicle in a state where the rocker panel of the small vehicle is disposed on the upper side of the sub-platform 70, so that the inspector checks the lower body of the small vehicle and maintenance can be performed.

In the above description of the present invention, with reference to the accompanying drawings, the "pit lifter for pressure vessel inspection of hydrogen electric vehicles and gas fuel vehicles" having a specific shape and structure has been mainly described. However, the present invention is subject to various modifications and changes by those skilled in the art. It is possible, and such modifications and variations should be construed as falling within the protection scope of the present invention.

1: pit 2: mounting surface
10: base 11: horizontal frame angle
12: vertical frame angle 13: rib plate
14: relay frame angle 20: main platform
21: horizontal H beam 22: vertical H beam
23: main floor 24: rib angle
25: side channel 30: main lifting means
31, 32: first and second front links 33, 34: first and second rear links
35, 36: bottom and top drive rollers 37, 38: bottom and top guide
39: lifting driving part 391: bottom bracket
392: lifting piston 393: lifting hydraulic cylinder body
394: top bracket 40: guide means
41: rail 411: support plate
412: chemical anchor 42: roller
421: step 422: support
50: locking means 51: locking bracket
511: distribution hole 52: locking head
53: forward drive 531: forward and backward piston
532: forward and backward hydraulic cylinder body 60: recess
70: sub-platform 71: sub-floor
80: sub-lifting means 81, 82: first and second sub-bottom links
83, 84: first and second sub-top links
85, 86: sub-bottom and sub-top drive rollers
87, 88: sub-bottom and sub-top guide 89: sub-lifting driving part
891: sub bottom bracket 892: sub lifting piston
893: sub-lifting hydraulic cylinder body 894: sub-top bracket
90: stopper 91: stopper head
92: rod 93: stopper body

Claims (4)

Rectangular base (10) installed on the bottom of the recessed square space pit (PIT) (1);
a square main platform 20 disposed on the upper side of the base 10;
Main lifting means ( 30); and
A guide means (40) for guiding the lifting operation of the main platform (20) when the main platform (20) is raised by the main lifting means (30);
The guide means 40 includes a rail 41 installed on each of the left and right inner walls of the pit 1 by n (where n is an integer greater than or equal to 1) arranged in the vertical and vertical directions, and the main platform 20 of It consists of n rollers 42 provided at each of the left and right both ends and rotated along the respective rails 41,
A locking bracket 51 installed on the lower surface of the main platform 20 and having a distribution hole 511 penetrating left and right and the roller 42 is rotatably mounted at the lower end, and hidden in the distribution hole 511 By further comprising a locking means 50 comprising a locking head 52 arranged to be so, and a forward and backward driving part 53 mounted on the locking bracket 51 to move the locking head 52 forward and backward. When the locking head 52 is advanced by the advancing and retreating driving unit 53 in a state where the main platform 20 is raised through the main lifting means 30 , the locking head 52 is positioned at the upper end of the rail 41 . A pit lifter for inspection of pressure-resistant containers of hydrogen electric vehicles and gas fuel vehicles, characterized in that they are supported.
The method of claim 1,
A pair of recesses 60 formed to be recessed downwardly in an area spaced from the front and rear in the upper surface of the main platform 20, and a rocker panel of the vehicle, which are hidden in each of the recesses 60 a pair of sub-platforms 70 for supporting ) A pit lifter for testing the pressure vessel of a hydrogen electric vehicle and a gas fuel vehicle, characterized in that it further comprises.
3. The method according to claim 1 or 2,
It is installed on the base 10 and further comprises two or more stoppers 90 for supporting the main platform 20 in a state in which the main platform 20 is lowered through the main lifting means 30. A pit lifter for inspection of pressure-resistant vessels of hydrogen electric vehicles and gas fueled vehicles. delete

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