EP4253308A1 - Flèche de type à renfort latéral pour camion à échelle - Google Patents

Flèche de type à renfort latéral pour camion à échelle Download PDF

Info

Publication number
EP4253308A1
EP4253308A1 EP21898675.0A EP21898675A EP4253308A1 EP 4253308 A1 EP4253308 A1 EP 4253308A1 EP 21898675 A EP21898675 A EP 21898675A EP 4253308 A1 EP4253308 A1 EP 4253308A1
Authority
EP
European Patent Office
Prior art keywords
boom
auxiliary
extension ladder
booms
ladder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21898675.0A
Other languages
German (de)
English (en)
Inventor
Dae Woo Lim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
An Jang Sook
Original Assignee
An Jang Sook
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020200163218A external-priority patent/KR102275660B1/ko
Priority claimed from KR1020210083937A external-priority patent/KR20230001256A/ko
Application filed by An Jang Sook filed Critical An Jang Sook
Publication of EP4253308A1 publication Critical patent/EP4253308A1/fr
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping type

Definitions

  • the present invention relates to a lateral reinforcement type boom for a ladder truck, and more specifically, a lateral reinforcement type boom for a ladder truck, which, by attaching auxiliary booms on the sides of the main boom, significantly improves the strength against bending loads, as well as the yield strength against local partial loads caused by the carriage and the strength against lateral loads applied in the transverse direction.
  • a ladder truck is a vehicle that can transport carriages and other loads from ground level to an elevated position by telescoping a multi-stage boom, and its performance depends on the strength of the boom, which determines the carrying height.
  • FIG. 1 An example of such a boom for a ladder truck is the ladder truck boom shown in Drawing 1 ( U.S. Patent No. 10-1763649 ).
  • This boom (110) is mounted rotatably on the vehicle (101), as shown, and the elevation angle is determined by an angle adjustment cylinder (104).
  • an angle adjustment cylinder (104) determines the elevation angle of the boom (110).
  • each boom has an open structure in cross-section to allow movement of the carriage (120) while still being folded, resulting in poor bending strength.
  • the outer boom which does not fold on the outer surface, can be sufficiently reinforced on the outer surface, but the other booms cannot provide any reinforcement means on the outer surface to maintain the folding.
  • the second boom which cannot be reinforced and is the lowest boom, i.e., the one comes right after the outer boom, has the largest load burden and the most vulnerable in terms of strength.
  • the boom of the ladder truck should be equipped with an extension ladder so that the carriage can be lowered close to the ground.
  • the "Extension ladder attachment device" of Public Utility Model Publication No. 20-1994-0022909 shown in Drawing 1 , has a joint member (204) at the rear end of the ladder part (203), and an extension ladder (202) coupled to the joint member (204) to connect with the ladder part (203), so that the carriage (205) can be moved from the ladder part (203) to the extension ladder (202) and lowered close to the ground.
  • the extension ladder must be connected to the outermost boom of the main boom in contact with the outer boom, and in a structure in which the main boom is reinforced by installing reinforcing booms as described above, especially in a structure in which the reinforcing boom is installed on the side of the main boom so that the load can be distributed as much as possible, the auxiliary boom is located on the side of the main boom, so it is difficult to arrange the position where the extension ladder is to be combined to be accommodated on the side of the outer boom.
  • the present invention is proposed to solve the above problems of the conventional boom for ladder truck, and aims to improve the overall strength of the boom against bending loads, especially the load on the leading edge in the elongated state and the bending load due to its own weight, by reinforcing the main boom with auxiliary booms on both sides of the main boom, while reducing the weight of the boom itself by doubling the rigidity of the boom as described above.
  • it has another object to improve the local yield strength of the main boom by distributing the load locally generated on the main boom due to the carriage to the auxiliary boom.
  • the present invention also has another object to provide a ladder truck boom with a main boom with auxiliary booms on the side for reinforcement and an extension ladder that can be used in combination with the main boom for relative movement in order to solve the problems of ladder truck booms with conventional extension ladders as above.
  • the present invention has another object to provide a ladder truck boom with an extension ladder that prevents the carriage from moving sideways while resting on the extension ladder when the carriage is moved by the extension ladder.
  • the present invention has another object to provide a ladder truck boom with an extension ladder that is rigidly coupled to the main boom even when the auxiliary boom is positioned to the side of the main boom.
  • the present invention provides a lateral reinforcement type boom for a ladder truck comprising: a main boom rotatably mounted on the vehicle, extending telescopically in multiple steps; and auxiliary booms, coupled telescopically in multiple steps to each of two transverse sides of the main boom.
  • auxiliary booms preferably comprise: a plurality of auxiliary booms foldably coupled so as to have a decreasing cross-sectional area; and a plurality of brackets coupled to project laterally on the sides of the leading edges of the main booms to support leading edge portions of the respective auxiliary booms.
  • auxiliary booms corresponding to the outer boom connected to the vehicle, of the booms of the main boom are preferably attached to both sides of the outer boom.
  • each of the plurality of auxiliary booms preferably has a circular or elliptical cross-sectional shape.
  • each of the plurality of auxiliary booms preferably has a polygonal shape.
  • an extension ladder that is mounted at the bottom of the main boom so as to be able to move relatively along the main boom and extends to the ground when the ladder truck is in operation, allowing the carriage of the ladder truck to descend to the ground.
  • extension ladder it is desirable for the extension ladder to be supported at the top of an outer boom positioned at the outermost of the plurality of auxiliary booms and to be guided for movement along the main boom by a fixing band attached to an upper surface of the auxiliary boom positioned at the outermost of the booms.
  • the fixing band comprises a roller portion along which the extension ladder is guided so that it can slide, and a roller of the roller portion fits into a groove formed in the extension ladder to secure the extension ladder when the extension ladder is drawn in the upward direction of the main boom.
  • the fixing band preferably has a fixing part for pressing the roller part toward the groove part so that the roller is fixed to the groove part when the extension ladder is drawn in the upper direction of the main boom.
  • the extension ladder preferably comprises a pair of roller plates extending longitudinally to support the wheels of the carriage; and an anti-falling bumper projecting upwardly along an outer edge of the roller plates to prevent the wheels rolling on the roller plates from falling off the outer edge of the roller plates.
  • the extension ladder preferably includes a guide bumper which is integrally formed on the outer surface of the anti-falling bump to guide the movement along the main boom by being inserted into the guide groove formed between the upper part of the outer wall of the outer boom and the lower part of the inner wall of the fixing band, which generates a step according to the height difference between the outermost outer boom of the booms and the auxiliary boom.
  • both sides of the open main boom can be reinforced by auxiliary booms having a closed cross-sectional shape, thereby improving the overall bending strength of the boom.
  • auxiliary booms having a closed cross-sectional shape, thereby improving the overall bending strength of the boom.
  • the overall strength of the boom can be increased, so even if the thickness of the main boom is reduced, the increase in weight due to the boom itself or the reinforcing structure can be avoided, thus preventing the loss of strength due to the increase in weight.
  • the main boom and the auxiliary booms are arranged continuously on the sides of the main boom, the main boom and the auxiliary booms provide bending resistance in the transverse direction of the load, even if the boom is subjected to lateral forces such as wind by extending the boom and placing it at an elevation. Therefore, it is possible to significantly improve the strength against lateral loads compared to placing the auxiliary booms below the main boom.
  • the local yield strength of the main boom can be greatly increased because the load is shared between the main boom and the auxiliary booms.
  • extension ladder is coupled to the lower upper surface of the main boom with the auxiliary boom for reinforcement coupled to both sides so that it can be moved relative to the ground, the extension ladder can be used to lower the carriage moving on the main boom close to the ground, which makes it easy to load and unload luggage on the carriage.
  • the anti-falling bump protrudes upward along the outer side of the extension ladder to prevent the wheels of the carriage from falling off from the extension ladder to the side, so that the carriage can be safely used even when the carriage is located on the extension ladder.
  • the upper surface of the auxiliary boom is coupled with a fixing band to which the extension ladder is relatively movable, a guide groove is formed due to the height difference between the fixing band and the main boom, and a guide bumper formed on the outer surface of the extension ladder is inserted into the guide groove, so that the extension ladder is firmly coupled to the fixing band and the guide groove.
  • the roller structure can guide and fix the extension ladder at the same time, so that the relative movement and fixation of the extension ladder can be made simple in one configuration.
  • the boom of the present invention is a part of a vehicle, such as a ladder truck, telescopically extending from the vehicle (10), so that when transported it is folded as shown in Figure 3 , and when in use it extends upwardly and serves to elevate the carriage (3) from the bottom connected to the vehicle (10) to the top.
  • a vehicle such as a ladder truck
  • the boom (1) of the present invention comprises a main boom (11) and an auxiliary boom (13), as shown in Figures 3 to 9 .
  • the main boom (11) is a main body of the boom (1), rotatably mounted on the vehicle (10) at its lower end, and comprising a plurality of booms (21, 22, 23, 24, 25, 26) for telescopically extending, as shown in Figures 3 and 4 .
  • each of the booms (21, 22, 23, 24, 25, 26) comprises a rectangular framing body, i.e., a framing body on both the left and right sides having a ' ' shaped cross-section, opened upwards and downwards by openings (31), as shown in Figures 8 and 9 , to which a plurality of transverse bars (12) are attached to the lower opening (31) to reduce weight and add strength.
  • the auxiliary boom (13), as a means for reinforcing the main boom (11) in the transverse direction at both ends of the main boom 11, is coupled to the left and right sides of the main boom (11) in pairs to be stretchable in multiple stages on both sides in the transverse direction of the main boom (11) as shown in Figures 5 to 9 .
  • Each has an independent folding structure.
  • the auxiliary boom (13) comprises a plurality of auxiliary booms (41, 42, 43, 44, 45) and a plurality of brackets (51, 52, 53, 54, 55), as shown in Figures 5 to 9 .
  • Each of the auxiliary booms (41, 42, 43, 44, 45) is a unitary body having a polygonal, such as square, or circular, oval, or track-shaped cross-sectional shape, as shown in Figures 6 and 8 , with a plurality of longitudinal sections for telescoping, and a foldable structure with a decreasing cross-sectional area from bottom to top for folding.
  • drawing symbol #15, shown in Figures 5 , 8 and 9 to surround outer boom (21) and auxiliary boom (41) is an extension ladder that extends from boom (1) towards the ground in use, allowing the carriage to lower to the ground to facilitate loading and unloading.
  • each of the auxiliary booms (41, 42, 43, 44, 45) has various cross-sectional shapes as above without openings in the cross-section, preferably a rectangular barrel-shaped cross-sectional shape which is long from top to bottom and short from side to side as shown in Figure 8 , considering the moment of inertia of section to cross section area.
  • the brackets (51, 52, 53, 54, 55) are means for supporting the leading edge, i.e., the top, of each of the corresponding auxiliary booms (41, 42, 43, 44, 45), and are coupled by projecting laterally to the sides of the leading edge of each of the corresponding booms (21, 22, 23, 24, 25, 26) as shown in Figure 6 .
  • the brackets are coupled in such a way that, for example, the 1st bracket (51) is attached to the side of the lower outer boom (21) of the boom (1) that connects to the vehicle (10), and the 5th bracket (55) is attached to the fifth boom (25), respectively.
  • each of the brackets (51, 52, 53, 54, 55) supports a leading edge portion of a corresponding auxiliary boom (41, 42, 43, 44, 45), respectively, in such a way that the 1st bracket (51) supports the auxiliary outer boom (41) and the fifth bracket (55) supports the 5th auxiliary boom (45).
  • each of the brackets (51, 52, 53, 54, 55) is provided with a bore (57) at the top to support the leading edge of the auxiliary booms (41, 42, 43, 44, 45) by fitting the leading edge into this bore (57), as shown in Figures 6 and 7 .
  • each of the brackets (51, 52, 53, 54, 55) is in the form of a hollow and thick plate, but as shown in Figure 7 , a through groove (59) is notched in the middle part of the side edge to allow the nut (62) to be fixed externally when rotating the transverse adjustment bolt (61) which regulates the transverse displacement of each boom (21, 22, 23, 24, 25, 26) through the adjustment hole (58).
  • the boom (1) When extended, the boom (1) resists bending stresses not only through the main boom (11) itself, but also through the auxiliary boom (13), which can significantly increase the bending strength. Therefore, no strength reinforcement is required for the main boom (11) and the reinforcing structure can be omitted, thus reducing the weight load.
  • the auxiliary boom (13) since the auxiliary boom (13) has a rectangular cross-sectional shape with a small cross-sectional area and no opening, it is possible to greatly increase the cross-sectional moment of inertia compared to the cross-sectional area, so that the bending strength can be greatly improved.
  • auxiliary boom (13) is placed side by side with the main boom (11) in the transverse direction and shares the local load generated when the carriage (3) passes with the main boom (11), load bearing of the main boom (11) can be reduced. Therefore, the thickness and weight of the main boom (11) itself can be reduced, and the reinforcing structure for the main boom (11) can be removed.
  • the auxiliary boom (13) is placed in line with the main boom (11) in the direction of the load applied to the main boom (11). This greatly improves the strength against lateral loads due to wind or external forces compared to placing the auxiliary boom (13) below the main boom (11).
  • the boom of the present invention is a part of a vehicle, such as a ladder truck, telescopically extending from the vehicle (10), so that when transported it is folded as shown in Figure 10 and when in use it extends upwardly and serves to elevate the carriage (3) from the bottom connected to the vehicle (10) to the top.
  • the boom (1) of the present invention comprises a main boom (11), an auxiliary boom (13), and an extension ladder (15) as shown in Figures 10 to 14 .
  • the main boom (11) is a main body of the boom (1), rotatably mounted on the vehicle (10) at its lower end, and comprising a plurality of booms (21, 22, 23, 24, 25, 26) for telescopically extending, as shown in Figures 10 and 11 .
  • each of the booms (21, 22, 23, 24, 25, 26) is positioned on both sides of the boom (1) by means of a rectangular frame body as shown in Figure 13 , and a plurality of cross bars are attached between the booms (21, 22, 23, 24, 25, 26) on both sides to reduce weight and increase strength.
  • the auxiliary boom (13), as a means for reinforcing the main boom (11) in the transverse direction at both ends of the main boom (11), is coupled to the left and right sides of the main boom (11) in pairs to be stretchable in multiple stages on both sides in the transverse direction of the main boom (11) as shown in Figures 13 .
  • Each has an independent folding structure.
  • the auxiliary boom (13) comprises a plurality of auxiliary booms (41, 42, 43, 44, 45) and a plurality of brackets (51, 52, 53, 54, 55), as shown in Figures 13 .
  • Each of the auxiliary booms (41, 42, 43, 44, 45) is a unitary body having a polygonal, such as square, or circular, oval, or track-shaped cross-sectional shape, as shown in Figures 13 and 15 , with a plurality of longitudinal sections for telescoping, and a foldable structure with a decreasing cross-sectional area from bottom to top for folding.
  • each of the auxiliary booms (41, 42, 43, 44, 45) has various cross-sectional shapes as above without openings in the cross-section, preferably a rectangular barrel-shaped cross-sectional shape which is long from top to bottom and short from side to side as shown in Figure 15 , considering the moment of inertia of section to cross section area.
  • the brackets (51, 52, 53, 54, 55) are means for supporting the leading edge, i.e. the top, of each of the corresponding auxiliary booms (41, 42, 43, 44, 45), and are coupled by projecting laterally to the sides of the leading edge of each of the corresponding booms (21, 22, 23, 24, 25, 26) as shown in Figure 13 .
  • the brackets are coupled in such a way that, for example, the 1st bracket (51) is attached to the side of the lower outer boom (21) of the boom (1) that connects to the vehicle (10), and the 5th bracket (55) is attached to the fifth boom (25), respectively.
  • each of the brackets (51, 52, 53, 54, 55) supports a leading edge portion of a corresponding auxiliary boom (41, 42, 43, 44, 45), respectively, in such a way that the 1st bracket (51) supports the auxiliary boom (41) and the fifth bracket (55) supports the 5th auxiliary boom (45).
  • each of the brackets (51, 52, 53, 54, 55) is provided with a bore (57) at the top to support the leading edge of the auxiliary booms (41, 42, 43, 44, 45) by fitting the leading edge into this bore (57), as shown in Figures 12 and 13 .
  • the auxiliary boom (41) corresponding to the outer boom (21) is attached to both sides of the outer boom (21) as a whole, thereby increasing the support strength of the auxiliary boom (13).
  • the boom (1) formed as described above combines the main boom (11) with the auxiliary boom (13) so that the load applied to the main boom (11) is resisted by the auxiliary boom (13) together.
  • the bending strength of the entire boom can be significantly improved.
  • An extension ladder (15) is used to lower the carriage (10) to the ground. It is attached to the lower end of the main boom (11) as shown in Figures 10 and 11 , and is attached to a ' ' shaped mounting bracket (71), as shown in Figures 13 to 16 , which is fixedly attached to the upper surface of the outermost of the plurality of auxiliary booms (41, 42, 43, 44, 45) and, as shown in Figures 13 and 14 , guided for movement along the main boom (11) and supported on the upper surface of the outer boom (21) positioned at the outermost of the booms (21, 22, 23, 24, 25, 26). And, as shown in Figures 15 and 16 , it comprises a roller plate (81) and an anti-fall bumper (82).
  • the roller plates (81) are plates supporting the wheels (77) of the carriage (3), and as shown in Figure 15 , it is positioned in the transverse direction so that the wheels (77) of the carriage (3) are supported, and since the wheels 77 are located as a pair on both sides, the roller plates (81) are also located at the upper end of the main boom (11) on both sides to extend in the longitudinal direction, respectively, so that the pair support the wheels (77) of the carriage (3). In addition, since they are located parallel to the top of the main boom (11), the wheels (77) of the carriage (3) can easily move over the top of the main boom (11) and the roller plate (81).
  • the anti-fall bumper (82) prevents the wheels (77) of the carriage (3) from falling off to the outside of the roller plate (81), and as shown in Figures 15 and 16 , it protrudes upward along the outer side of the roller plate (81), and is formed to protrude to fit the height of the fixing band (71) so that its upper end is fitted to the upper surface of the fixing band (71).
  • the anti-fall bumper (82) prevents the wheel (77) of the carriage (3) from coming off the side of the extension ladder (15), the carriage can be used safely even when the carriage (3) is located on the extension ladder (15).
  • the extension ladder (15) when the extension ladder (15) is inserted into the fixing band (71), it may include a guide bumper (83) to be firmly coupled so that it can be moved relative to the main boom (11) in the state where the main boom (11) and the auxiliary boom (13) are combined.
  • Guide bumper (83) is integrally projected on the outer surface of the anti-fall bumper (82), opposite anti-fall bumper (82), and is inserted into the guide groove (G) formed between the fixing band (71) and the outer boom (21), as shown in Figures 15 and 16 .
  • the guide groove (G) is formed between the upper portion of the outer wall (21a) of the outer boom (21) and the lower portion of the inner wall (71a) of the fixing band (71), which generates a step according to the height difference (t) between the outer boom (21) and the auxiliary boom, as shown in Figure 16 , so that the guide bumper (83) can be inserted.
  • the extension ladder (15) is guided in the guide groove (G) and can be moved relative to the main boom (11).
  • extension ladder (15) is firmly coupled to the fixing band (71) and the guide groove (G), thereby forming a coupling structure of the main boom (11) and the auxiliary boom (13) and a firm coupling structure of the extension ladder (15) that is movable relative to the main boom (11) by the fixing band (71).
  • structuring the extension ladder (15) as above has the advantage that the extension ladder (15) can be coupled to the lower upper surface of the main boom (11) to which the auxiliary booms (13) for reinforcement are coupled on both sides so that the extension ladder (15) can be moved to extend to the ground, so it allows the carriage (3) travelling on the main boom (11) to be lowered close to the ground to facilitate loading and unloading of the load onto the carriage (3).
  • the fixing band (71) may be in a form simply surrounding the extension ladder (15), but as shown in Figures 14 , 16 and 17 , it may be equipped with the roller part (73) in which the roller (73a) is formed so that the extension ladder (15) can be smoothly guided and slide in the longitudinal direction.
  • a roller part (73) is coupled to the side of the fixing band (71) in a state where the roller (73a) is rotatably coupled to the roller bracket (73b) as shown in Figures 16 and 17 .
  • the roller (73a) comes into contact with the side of the extension ladder (15) through a through groove (71b) perforated in one surface of the fixing band (71) to which the roller part (73) is coupled. Since the roller (73a) keeps the contact with the side surface of the extension ladder (15), the extension ladder (15) is guided and slides in the longitudinal direction.
  • the extension ladder (15) should be fixed so that it does not come out again after being stowed in the upper direction of the main boom (11) when the boom (1) is not in use.
  • Such fixing can be performed using the roller (73a) of the fixing band (71).
  • a part of the extension ladder (15) has a groove part (H)
  • the fixing band (71) includes a fixing part (75) that presses the entire roller part (73) into the groove part (H) direction.
  • the groove part (H) is formed in a position such that when the extension ladder (15) is stowed in the upward direction of the main boom (11), it moves to the position of the roller (73a) and is aligned to have the roller (73a) inserted, as shown in Figure 14 .
  • this groove part may be formed in only one part of the extension ladder (15) such that the roller (73a) is only engaged when the extension ladder (15) is fully stow, if multiple groove parts may be formed in any position of the extension ladder (15), the length of the extension ladder (15) extending from the main boom (11) can be adjusted.
  • the fixing part (75) is coupled to the side of the fixing band (71) by forming a " " shape so that the fixing bracket (75b) accommodates the roller part (73), as shown in Figure 17 . And a screw hole is drilled on a side parallel to the side of the fixing band (71) to engage the fixing lever (75a).
  • the entire roller part (73) is inserted into the through groove (71b) of the fixing band (71) so that it is movable in the vertical direction of the side of the extension ladder (15). Accordingly, the entire roller portion (73) can be moved and held in the through groove (71b) to a position where the roller (73a) is in contact with the side of the extension ladder (15) so that the roller (73a) can guide the extension ladder (15) during telescoping the extension ladder (15).
  • the fixing bracket (75b) is preferably formed such that the inner space is smaller than the thickness in the direction of movement of the roller bracket (73b) in the through groove (71b), as shown in Figure 16 , so that the roller bracket (73b) cannot completely slide out of the through groove (71b), as the roller bracket (73) can easily slip out of the through groove (71b).
  • the roller structure enables the extension ladder (15) to be guided and fixed at the same time, providing the advantage that the relative movement and fixing of the extension ladder (15) can be made simple in one configuration.
  • both sides of the open main boom can be reinforced by auxiliary booms having a closed cross-sectional shape, thereby improving the overall bending strength of the boom.
  • auxiliary booms having a closed cross-sectional shape, thereby improving the overall bending strength of the boom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP21898675.0A 2020-11-27 2021-11-26 Flèche de type à renfort latéral pour camion à échelle Pending EP4253308A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020200163218A KR102275660B1 (ko) 2020-11-27 2020-11-27 횡보강식 사다리차용 붐대
KR1020210083937A KR20230001256A (ko) 2021-06-28 2021-06-28 연장사다리를 구비한 사다리차용 붐대
PCT/KR2021/017629 WO2022114850A1 (fr) 2020-11-27 2021-11-26 Flèche de type à renfort latéral pour camion à échelle

Publications (1)

Publication Number Publication Date
EP4253308A1 true EP4253308A1 (fr) 2023-10-04

Family

ID=81754878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21898675.0A Pending EP4253308A1 (fr) 2020-11-27 2021-11-26 Flèche de type à renfort latéral pour camion à échelle

Country Status (2)

Country Link
EP (1) EP4253308A1 (fr)
WO (1) WO2022114850A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115180555B (zh) * 2022-06-14 2024-06-18 国网浙江省电力有限公司浦江县供电公司 一种叉车辅助吊臂

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640383A (en) * 1986-02-03 1987-02-03 Newberry Claude A Movable staging scaffold system for building construction
KR970003944Y1 (ko) 1993-03-16 1997-04-24 최길호 연장 사다리의 결착장치
KR200258475Y1 (ko) * 2001-08-27 2001-12-28 주식회사 에스아이테코 보조레일이 구비된 사다리 소방차
JP3801496B2 (ja) * 2001-12-11 2006-07-26 株式会社アイチコーポレーション ブーム
KR200331396Y1 (ko) * 2003-07-01 2003-10-30 황일호 사다리차의 붐 구조
EP2955802B1 (fr) 2014-06-13 2018-08-08 Textron Innovations Inc. Dispositif d'alimentation de câbles
KR101762771B1 (ko) * 2015-12-30 2017-07-28 임대우 고가 사다리차용 복합 신축 붐
KR101955929B1 (ko) * 2018-06-01 2019-03-08 케이원산업 주식회사 붐지지대
KR102146714B1 (ko) * 2019-06-28 2020-08-21 주식회사 코아스 다단식 붐대의 안정장치
KR102275660B1 (ko) * 2020-11-27 2021-07-09 임대우 횡보강식 사다리차용 붐대

Also Published As

Publication number Publication date
WO2022114850A1 (fr) 2022-06-02

Similar Documents

Publication Publication Date Title
CA1047710A (fr) Rampe de chargement reployable
US20100207355A1 (en) Lifting device for tow car
US20100230209A1 (en) Quick disconnect ladder assembly
EP4253308A1 (fr) Flèche de type à renfort latéral pour camion à échelle
US20020014504A1 (en) Load-carrier with movable carriage for automotive vehicle
EP0308758B1 (fr) Système pour porter et guider des conduites pour machines à flèches extensible et rétractile
EP2671783A2 (fr) Cabine pour grue
KR101035476B1 (ko) 적재함 또는 적재면을 구비한 차량
US11161722B2 (en) Telescopic jib bracing device
US7178631B2 (en) Aerial ladder cradle assembly
JP2021533051A (ja) 伸縮式クレーンの後部固定ライン用の支持体
US10926709B2 (en) Vehicle rack system for stacked ladders
KR102377476B1 (ko) 횡보강식 사다리차용 붐대
KR200395400Y1 (ko) 화물차의 화물적재함 덮개장치
JP2000210389A (ja) 車上作業用親綱支柱及び車上作業用水平親綱張架装置
EP0286301B1 (fr) Plate-forme de travail montable sur véhicule
CN116670064A (zh) 用于横向加强式云梯车的吊杆
CN208413589U (zh) 一种大载重电梯轿架
CN107585107B (zh) 车载伸缩式登顶梯
GB2455088A (en) Load carrying apparatus for a vehicle roof
JP4430700B2 (ja) 貨物自動車
JP3803542B2 (ja) 荷受台昇降装置付車両におけるリヤバンパ装置
CN215284613U (zh) 一种车载多功能行李架
JP3838621B2 (ja) 荷受台昇降装置付車両におけるリヤバンパ装置
CN217320543U (zh) 一种轻量化、低成本的模块化设计商用车用横梁

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230613

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)