WO2011017818A1 - Dispositif de positionnement et de rétraction de roulettes pour un chariot à bras plat à quatre roulettes - Google Patents

Dispositif de positionnement et de rétraction de roulettes pour un chariot à bras plat à quatre roulettes Download PDF

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Publication number
WO2011017818A1
WO2011017818A1 PCT/CN2009/000914 CN2009000914W WO2011017818A1 WO 2011017818 A1 WO2011017818 A1 WO 2011017818A1 CN 2009000914 W CN2009000914 W CN 2009000914W WO 2011017818 A1 WO2011017818 A1 WO 2011017818A1
Authority
WO
WIPO (PCT)
Prior art keywords
positioning
caster
sleeve
carrier
truckle
Prior art date
Application number
PCT/CN2009/000914
Other languages
English (en)
Chinese (zh)
Inventor
简世坤
Original Assignee
Jian Shikun
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
Application filed by Jian Shikun filed Critical Jian Shikun
Priority to PCT/CN2009/000914 priority Critical patent/WO2011017818A1/fr
Publication of WO2011017818A1 publication Critical patent/WO2011017818A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/12—Collapsible wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/18—Geared articulations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/14—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by provisions for nesting or stacking, e.g. shopping trolleys
    • B62B3/1476—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by provisions for nesting or stacking, e.g. shopping trolleys the main load support being a platform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/06—Hand moving equipment, e.g. handle bars
    • B62B5/067—Stowable or retractable handle bars

Definitions

  • the utility model relates to a labor-saving four-wheel flatbed structure, in particular to a caster folding and positioning device of a four-wheel flatbed truck which can be opened and closed by a caster.
  • the four-wheel book flatbed includes a carrying portion, a push-pull portion and a caster portion connected by the linkage, and a rear caster positioning device for locking the push-pull portion and the rear caster in an open state;
  • the carrying portion includes the carrier connected to each other a socket, a load bearing plate, and two poles of the push-pull portion are hinged to the socket through the connecting seat;
  • the caster portion includes a caster, a connecting rod connecting the two or more casters, and a caster sleeve, the caster sleeve is set on the carrier,
  • a front caster positioning device for locking the front caster in an open state is provided between the caster sleeve of the front caster and the carrying portion.
  • the positioning structure is more stable than the flatbed that only positions the rear casters. Avoid shaking the front casters.
  • the front caster positioning device is realized by the positioning frame provided at the caster portion corresponding to the position of the front caster, and the mutual positioning of the guide frame corresponding to the position of the carrier and the position of the retainer, the rigidity is poor. Therefore, when the weight carried on the flatbed is large, due to the action of gravity, the elastic locking force of the front latch between the positioning bracket and the guide frame is cancelled, so that the front caster is unlocked during use and cannot work normally. It brings great inconvenience to the application of the four-wheel flatbed.
  • the technical problem to be solved by the utility model is to overcome the deficiencies of the prior art.
  • a caster wheel of a four-wheel flatbed truck with the front and rear casters simultaneously opened and closed is provided.
  • the position folding device enhances the positioning reliability of the front wheel of the four-wheel flatbed.
  • a caster fixed position folding device of a four-wheel flatbed truck comprising a carrier and a bearing plate, a front caster device and a rear caster device arranged on the carrier; the front caster device Connecting with the rear caster device through the connecting rod and driving or simultaneously closing by the linkage device disposed between the carrier and the push-pull portion; the rear end of the bearing plate is provided with the locked caster device opened or closed a rear caster positioning device, characterized in that: the front caster device comprises a front caster sleeve (31a) fitted on the carrier (2) and a positioning sleeve (10) disposed adjacent to a rear end of the front caster sleeve (31a), a rear end surface of the front caster sleeve (31a) is provided with a bayonet (31c) in a circumferential direction, and a front end surface of the positioning sleeve (10) is circumferentially provided with a lock block (10a)
  • the bayonet (10a) is a plurality of or evenly distributed in the circumferential direction, and the number of the lock blocks (10a) corresponds to the number of bayonet ports.
  • a tension spring (15) is connected to the connecting sleeve (10), and the other end of the tension spring (15) extends toward the front caster sleeve (31) and is fixedly connected with the carrier (2).
  • the radial positioning device is a long slot (10c) extending axially on the positioning sleeve (10), and is fixed on the carrier (2) and inserted in the long slot (10c)
  • the groove (10c) has a relatively moving guiding member (2a) extending in the direction.
  • the radial positioning means is a long groove extending in the axial direction on the carrier, and a guiding member fixed to the positioning sleeve and passing through the long groove to have a relative movement in the extending direction of the long groove.
  • the rear caster positioning device includes a connecting block (9) disposed at a rear end of the flatbed, and the connecting block (9) is provided with an upper latch (91a) that is locked with the lower end of the push-pull portion, and is coupled to the connecting rod (13).
  • the fixed lower pin (91b), the push-pull portion and the connecting rod (13) are respectively provided with positioning holes (44, 13a) which cooperate with the upper and lower latches (91a, 91b).
  • the side wall of the positioning sleeve (10) is provided with a radially extending mounting post (10b), the bearing plate (1) is provided with a connecting post (la), and one end of the tension spring (15) is mounted on The mounting post (10b) has the other end mounted on the connecting post (1), and the bearing plate (1) is fixedly connected to the carrier (2).
  • the connecting member is a wire rope (14), the front end of which is fixed on the mounting post (10b) of the positioning sleeve, The rear end is fixed to the connection block (9).
  • the lower end of the push-pull portion is provided with a connecting seat (41) connected to the carrier (2); and the connecting pin (91) between the upper latching pin (91a) and the lower latching pin (91b) of the connecting block (9)
  • the middle latch (91c) of the phase lock, the connecting seat (41) is provided with a positioning port (45) matched with the middle latch (91c);
  • the middle latch is two wedge-shaped positioning pins, which are arranged at the front end of the connecting block On the left and right sides of the face, two wedge-shaped positioning pins are respectively locked in the positioning ports (45) on the left and right sides of the rear end of the connecting seat.
  • the rear caster positioning device further includes a receiving seat (22) disposed at a rear end of the flatbed, and the lower bayonet (91b) passes through a through hole on the receiving seat (22) and a positioning opening of the end surface of the connecting rod (13) ( 13a)
  • the phase of the lower pin (91b) is provided with a wedge-shaped projection (91f), and the side wall of the receiving seat (22) is provided with a notch (22a) that engages with the wedge-shaped projection.
  • Applying the caster positioning and folding device described above on a four-wheel flatbed truck has the beneficial effects of: significantly enhancing the stability and reliability of the front caster device when it is opened. Compared with the four-wheeled flatbed with the existing caster positioning and folding device, its load capacity can be increased by more than 20% under the same specifications.
  • the upper, middle and lower bayonet pins are arranged on the connecting members of the rear caster positioning device, so that the positioning of the push-pull portion and the carrying portion and the caster portion are more stable, and no front and rear shaking occurs during use.
  • FIG. 1 is a perspective view of a four-wheel flatbed truck (bearing plate not shown) to which the caster positioning and folding device of the present invention is applied;
  • Figure 2 is an enlarged view of II in Figure 1;
  • Figure 3 is an enlarged view of a portion III in Figure 1;
  • Figure 4 is a perspective view of the rear caster positioning device of Figure 3;
  • Figure 5 is a partial enlarged view of a portion A in Figure 4.
  • Figure 6 is a partial enlarged view of B in Figure 4.
  • Figure 7 is a perspective view of a four-wheel flatbed truck with a load bearing plate
  • Figure 8 is a perspective view showing a folding process of the push-pull portion of the flatbed
  • Figure 9 is a partial enlarged view of C in Figure 8; '
  • Figure 10 is an exploded view of a four-wheeled flatbed. detailed description
  • the flatbed of the present embodiment mainly includes a carrying portion, a push-pull portion connected by the linkage, a front caster device, and a rear caster device, and a rear caster positioning device that maintains the push-pull portion and the rear caster device in an open state.
  • the load bearing portion includes a carrier 2, a load bearing plate 1 and a receiving seat 22.
  • the socket 22 is disposed at the rear end of the carrier 2, and the bearing plate 1 is fixed to the carrier 2 and the socket 22.
  • the push-pull part includes: a handle 6, a pole 4.
  • the front and rear caster devices include: front and rear casters 3a, 3b, front and rear casters 33a, 33b and front and rear caster covers 31a, 31b, and the front and rear caster devices are connected by a connecting rod 13 into a caster set.
  • the carrier 2 is bent into a U shape, and the end is connected to the socket 22 by a plurality of connecting screws or the like, and the wheel covers 31a, 31b are fitted on the carrier 2.
  • the front caster device further includes a positioning sleeve 10 disposed adjacent to the rear end of the front caster sleeve 31a, and the rear end surface of the front caster sleeve 31a is provided with a bayonet 31c along the circumferential direction. Or a plurality of bayonet ports are evenly distributed in the circumferential direction.
  • the front end surface of the positioning sleeve 10 is circumferentially provided with a plurality of locking blocks 10a which are matched with the above-mentioned bayonet 31c, and a diameter is provided between the positioning sleeve 10 and the carrier frame 2.
  • the radial positioning device is a long groove 10c extending in the axial direction on the positioning sleeve 10, and is fixed on the carrier 2 and inserted in the long groove 10c to have a relative direction along the extending direction of the long groove 10c
  • the moving guiding element 2a can be a pin or a screw (as shown in Figures 3 and 6).
  • the radial positioning means may be a long groove extending in the axial direction on the carrier, and a guide member fixed to the positioning sleeve and passing through the long groove to have a relative movement in the extending direction of the long groove. Thereby, the positioning sleeve 10 can be moved only in the axial direction of the carrier 2 under the guiding action of the guiding member 2a, and cannot be rotated circumferentially.
  • a radially extending mounting post 10b is disposed on the side wall of the positioning sleeve 10
  • a connecting post 1a is disposed on the load-bearing plate 1 of the flatbed
  • a tension spring 15 is disposed between the mounting post 10b and the connecting post la, stretching
  • the two ends of the spring 15 are respectively provided with a fixing ring, and are connected to the mounting post 10b and the connecting post la through a fixing ring. Since the load-bearing plate 1 is fixed to the carrier 2, one end of the tension spring 15 is also in a fixed connection relationship with the carrier 2, thereby being connected to the other end of the tension spring 15.
  • the locating sleeve 10 provides a pre-tensioning force.
  • the main function of the tension spring 1 is to lock the lock block 10a of the tension sleeve 10 and the bayonet 31c of the front caster cover 31a to each other.
  • the front caster device can be integrally folded.
  • the positioning sleeve 10 can be under the action of the tension spring 15. The automatic reset re-locks the lock block 10a and the bayonet 31c.
  • the positioning sleeve 10 and the rear caster positioning device are interlocked by a connecting member such as the wire rope 14 disclosed in the embodiment.
  • a connecting member such as the wire rope 14 disclosed in the embodiment.
  • the side of the connecting block 9 is also provided with a mounting post 99.
  • the two ends of the wire rope 14 are respectively fixed on the mounting post 99 of the connecting block 9 and the mounting post 10b of the positioning sleeve 10, and through some intermediate components ( For example, the guide post 99a) is tensioned.
  • the specific structure of the rear caster positioning device and the positioning sleeve 10 and the rear caster positioning device is similar to that used in a collapsible four-wheel flatbed disclosed in Chinese Patent No. 200920052587.5. Specifically, as shown in Figs.
  • the push-pull portion includes two mutually parallel struts 4, and each of the ends of the struts 4 is fixed with a connecting seat 41 which is formed in an L shape with the struts 4.
  • the outer side of the front end of the connecting seat 41 is provided with a tooth piece 42, which is engaged with the tooth piece 32 provided on the end surface of the rear caster cover 31b to form an opening and folding linkage.
  • the connecting seat 41 and the carrying base 22 are connected by a pin shaft 43 such that when the push-pull portions are folded, the mutually engaging teeth 42 and 32 automatically fold the caster set.
  • the rear caster positioning device of the flatbed vehicle includes the left and right connecting blocks 9 corresponding to the two poles 4, the connecting rod 7, and the upper latching pin 91a, the middle latching pin 91c and the lower latching pin provided at the front end of the connecting block 9. 91b.
  • the left and right connecting blocks 9 are disposed on the rear side of the corresponding receiving seat 22, and are connected to each other by the connecting rod 7.
  • the two rods 4 are respectively provided with positioning holes 44 for engaging with the upper latches 91a.
  • the connecting rods 13 are provided with positioning holes 13a which cooperate with the lower bayonet 91b, and the positioning ports 13a are disposed at the rear end faces of the connecting rods 13.
  • the middle latch 91c is locked with the connecting seat 41.
  • the middle latch 91c is two wedge-shaped positioning pins, which are respectively disposed on the left and right sides of the front end surface of the connecting block 9, and the two wedge-shaped positioning pins are respectively locked to the connecting seat 41.
  • the positioning ports 45 on the left and right sides of the end are inside.
  • the surface of the connecting block 9 that cooperates with the strut 4 is a curved surface 9e.
  • the lower latch 91b is engaged with the positioning hole 13a of the connecting rod 13 through the through hole in the receiving seat 22, and the two sides of the lower latch 91b are further provided with wedge-shaped projections 91f, and the side wall of the receiving seat 22 is provided.
  • the bearing plate 1 is provided with an opening lb for facilitating the pulling of the crossbar 7 at a position corresponding to the crossbar 7 integrally connecting the two connecting blocks 9; the crossbar 7 and the receiving seat
  • a tension spring 8 is provided between 22, one end of the tension spring 8 is connected to the crossbar 7, and the other end is connected to the socket 22.
  • a transitional surface 41c is formed between the rear side surface and the lower end surface of the connecting seat 41, and the connecting seat 41 is connected by a pin 43 passing through the center of the tooth piece 42.
  • the transition surface 41c of the connecting seat 41 is pushed rearward.
  • the block 9 is connected such that the rear caster positioning device remains unlocked (as shown in Fig. 8).
  • the connecting member 9 connected by the wire rope 14 and the positioning sleeve 10 are interlocked, so that the lock block 10a of the positioning sleeve 10 is withdrawn from the bayonet 13c of the front caster sleeve 13a (as shown in Figs. 4 and 6).
  • the positioning sleeve 10 is reset, the lock block 10a is reset by the tension spring 15, and the front caster sleeve 13a is re-locked, thereby ensuring the front wheel of the flatbed during use of the four-wheel flatbed. Not easy to shake, and can carry heavier items.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

L'invention porte sur un dispositif de positionnement et de rétraction de roulettes pour un chariot à bras plat à quatre roulettes qui comporte un support (2) et une plaque d'appui (1). Des dispositifs de roulette avant et des dispositifs de roulette arrière sont disposés sur le support. Le dispositif de roulette avant et le dispositif de roulette arrière sont reliés par une barre de liaison (13) de manière à s'ouvrir ou se rétracter en une seule fois lorsqu’ils sont entraînés par le dispositif de liaison entre la partie de poussée et le support. A l'arrière de la plaque d'appui, se trouvent des dispositifs de positionnement de roulettes arrière qui sont destinés à verrouiller l'état ouvert ou de rétraction des roulettes arrière. Les dispositifs de roulettes avant ont des manchons de roulettes avant (31a) qui sont logés sur le support (2) et des manchons de positionnement (10) disposés derrière les manchons des roulettes avant (31a) en position adjacente. Autour de la surface d'extrémité arrière des manchons de roulettes avant (31a), se trouvent des orifices (31c) pour le verrouillage, avec lesquels se couplent des blocs de verrouillage (10a) autour de la surface d'extrémité avant des manchons de positionnement (10). Entre les manchons de positionnement (10) et le support (2), se trouve également un dispositif limiteur pour une direction radiale. Les manchons de positionnement (10) et les dispositifs de positionnement des roulettes arrière sont reliés par un élément de liaison (14). Le dispositif de positionnement et de rétraction de roulettes présente l'avantage que la stabilité et la fiabilité du support sont augmentées lorsque les roulettes avant sont ouvertes en utilisation.
PCT/CN2009/000914 2009-08-11 2009-08-11 Dispositif de positionnement et de rétraction de roulettes pour un chariot à bras plat à quatre roulettes WO2011017818A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2009/000914 WO2011017818A1 (fr) 2009-08-11 2009-08-11 Dispositif de positionnement et de rétraction de roulettes pour un chariot à bras plat à quatre roulettes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2009/000914 WO2011017818A1 (fr) 2009-08-11 2009-08-11 Dispositif de positionnement et de rétraction de roulettes pour un chariot à bras plat à quatre roulettes

Publications (1)

Publication Number Publication Date
WO2011017818A1 true WO2011017818A1 (fr) 2011-02-17

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ID=43585827

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/000914 WO2011017818A1 (fr) 2009-08-11 2009-08-11 Dispositif de positionnement et de rétraction de roulettes pour un chariot à bras plat à quatre roulettes

Country Status (1)

Country Link
WO (1) WO2011017818A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103373381A (zh) * 2012-04-11 2013-10-30 德国万众金属制品有限公司 运输推车
EP3434555A1 (fr) * 2017-07-24 2019-01-30 Shanghai Baotung Tech. Co., Ltd. Mécanisme de pliage de roue
FR3082491A1 (fr) * 2018-06-18 2019-12-20 Patrick Herbault Dispositif de blocage en position ouverte d un equipement transformable
EP3640115A1 (fr) * 2018-10-19 2020-04-22 FEIL GmbH Palette roulante

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055025A1 (fr) * 1999-03-17 2000-09-21 Shapiro Richard N Chariot compact pliant pourvu de structure de roue pivotante
WO2002000486A2 (fr) * 2000-06-28 2002-01-03 Shapiro Richard N Dispositif de transport compact pliant avec roues rabattables
DE10139357A1 (de) * 2001-08-19 2003-03-27 Thomas Heinrich Klappbarer Bollerwagen (Handwagen)
CN101177106A (zh) * 2006-11-10 2008-05-14 简世坤 可收脚轮的平板车及其脚轮定位装置
CN201257980Y (zh) * 2008-08-28 2009-06-17 简世坤 一种可收脚轮的平板车
CN201276139Y (zh) * 2008-04-14 2009-07-22 陈金喜 一种新型行李车

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055025A1 (fr) * 1999-03-17 2000-09-21 Shapiro Richard N Chariot compact pliant pourvu de structure de roue pivotante
WO2002000486A2 (fr) * 2000-06-28 2002-01-03 Shapiro Richard N Dispositif de transport compact pliant avec roues rabattables
DE10139357A1 (de) * 2001-08-19 2003-03-27 Thomas Heinrich Klappbarer Bollerwagen (Handwagen)
CN101177106A (zh) * 2006-11-10 2008-05-14 简世坤 可收脚轮的平板车及其脚轮定位装置
CN201276139Y (zh) * 2008-04-14 2009-07-22 陈金喜 一种新型行李车
CN201257980Y (zh) * 2008-08-28 2009-06-17 简世坤 一种可收脚轮的平板车

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103373381A (zh) * 2012-04-11 2013-10-30 德国万众金属制品有限公司 运输推车
EP3434555A1 (fr) * 2017-07-24 2019-01-30 Shanghai Baotung Tech. Co., Ltd. Mécanisme de pliage de roue
US10543864B2 (en) 2017-07-24 2020-01-28 Shanghai Baotung Tech. Co., Ltd. Wheel reversing mechanism and cart frame
FR3082491A1 (fr) * 2018-06-18 2019-12-20 Patrick Herbault Dispositif de blocage en position ouverte d un equipement transformable
EP3640115A1 (fr) * 2018-10-19 2020-04-22 FEIL GmbH Palette roulante

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