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JP2000118407A - Carriage and travel assisting device for carriage - Google Patents

Carriage and travel assisting device for carriage

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Publication number
JP2000118407A
JP2000118407A JP28705598A JP28705598A JP2000118407A JP 2000118407 A JP2000118407 A JP 2000118407A JP 28705598 A JP28705598 A JP 28705598A JP 28705598 A JP28705598 A JP 28705598A JP 2000118407 A JP2000118407 A JP 2000118407A
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Prior art keywords
part
carriage
cargo
travel
operation
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Pending
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JP28705598A
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Japanese (ja)
Inventor
Kunihiro Michihashi
邦宏 道端
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Kunihiro Michihashi
邦宏 道端
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Abstract

PROBLEM TO BE SOLVED: To reliably vary a support height of an auxiliary wheel against a load by connecting a booster for amplifying operation force between an operation lever and the auxiliary wheel. SOLUTION: A carriage is composed of the carriage part A composed of a hand-push type having no travel driving part and the travel assisting part B attachable to the carriage part A. The carriage part A is composed of a flat cargo mounting stage 1 capable of placing a cargo on the upper surface, a hand-push arm 2 erected in the rear part of the cargo mounting stage 1 and traveling wheels supported in the front part and the rear part on the under surface of the cargo mounting stage 1. The travel assisting part B is composed of an operation lever 4, a connecting link 5, a booster (a rod 6, a hydraulic pump 7 and a hydraulic cylinder 8), an auxiliary wheel 9 and an installing bracket 10. Original operation force is amplified by the booster (the rod 6, the hydraulic pump 7 and the hydraulic cylinder 8). Thus, even in a state of placing a cargo on the cargo mounting stage 1, a support height of the auxiliary wheel 9 can be reliably varied against a load.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】 本発明は、荷物を載せて搬送する台車の段差走行に係る技術分野に属する。 The present invention relates belongs to the technical field of the step driving of the carriage for transporting put luggage.

【0002】 [0002]

【従来の技術】 従来、台車としては、例えば、特開平10−181609号公報に記載のものが知られている。 Conventionally, as a truck, for example, it is known those described in Japanese Patent Laid-Open No. 10-181609.

【0003】この従来の台車は、荷物搭載台の下面に走行輪と補助輪とが支持され、補助輪の荷物搭載台への支持高さが操作レバーにより可変されるように構成され、 [0003] The conventional truck, a running wheel and the auxiliary wheel on the lower surface of the load carrier base is supported, luggage support height of the mounting base of the auxiliary wheel is configured to be changed by the operating lever,
補助輪の支持高さを高くして走行輪を走行面から浮かせることにより、段差を乗越えることができるようになっている。 By floating the running wheel from the travel surface by increasing the support height of the auxiliary wheel, thereby making it possible to overcome the step.

【0004】 [0004]

【発明が解決しようとする課題】 前述の従来の台車では、操作レバーの操作力がリンク機構等を介して補助輪に伝達されるため、荷物搭載台に荷物が載せられた荷重状態で操作レバーを操作しても、荷重に抗して補助輪の支持高さを確実に可変することができないという問題点がある。 [SUMMARY OF THE INVENTION In conventional bogie described above, since the operation force of the operation lever is transmitted to the auxiliary wheel via a link mechanism or the like, the operating lever in a load state where the baggage has been placed on the package mounting base it is engineered, there is a problem that can not be reliably varied supporting height of the auxiliary wheel against the load.

【0005】本発明は、このような問題点を考慮してなされたもので、荷重に抗して補助輪の支持高さを確実に可変することのできる台車と、既存の台車について支持高さ可変機能を備えた車輪等を装備可能にする台車用走行補助装置とを提供することを課題とする。 [0005] The present invention has such has been made in consideration of the problems, the dolly that can be reliably varied supporting height of the auxiliary wheel against the load, the support height for an existing truck and to provide a carriage for the drive assistance device to be equipped with wheels or the like having a variable function.

【0006】 [0006]

【課題を解決するための手段】 前述の課題を解決するため、本発明に係る台車は、次のような手段を採用する。 To solve the above problems BRIEF SUMMARY OF THE INVENTION, truck according to the present invention employs the following means.

【0007】即ち、請求項1に記載のように、荷物搭載台の下面に走行輪と補助輪とが支持され、補助輪の荷物搭載台への支持高さが操作レバーにより可変される台車において、操作レバーと補助輪との間に操作力を増幅するブースタを連結したことを特徴とする。 [0007] That is, as described in claim 1, and the running wheel and the auxiliary wheel on the lower surface of the load carrier base is supported, in a truck cargo supporting height of the mounting base of the auxiliary wheels is varied by the operating lever , characterized in that the concatenation of booster for amplifying the operating force between the operating lever and the auxiliary wheels.

【0008】この手段では、操作レバーの操作力がブースタで増幅されて補助輪に伝達されるため、荷重に抗して補助輪の支持高さが確実に可変される。 [0008] With this means, since the operation force of the operation lever is transmitted to and amplified by the auxiliary wheel in the booster, the support height of the auxiliary wheel is variably securely against the load.

【0009】また、請求項2に記載のように、請求項1 Further, as described in claim 2, claim 1
の台車において、ブースタは、操作レバーに連結されたロッドと、ロッドに連結され内蔵した流体がロッドで加圧される流体圧ポンプと、流体圧ポンプに接続して補助輪に連結され流体圧に応動する流体圧シリンダとからなることを特徴とする。 In the carriage, the booster includes a rod connected to the operating lever, a fluid pressure pump fluid is pressurized by a rod that incorporates linked to the rod, the fluid pressure is connected to the auxiliary wheel connected to the hydraulic pump characterized by comprising the fluid pressure cylinder which operates in response.

【0010】この手段では、ブースタが簡素な流体圧応動構造に構成される。 [0010] With this means, booster configured to simple fluids 圧応 dynamic structure.

【0011】また、請求項3に記載のように、請求項1 [0011] As described in claim 3, claim 1
または2の台車において、操作レバーは荷物搭載台の後部に支持され足踏ペダル形に形成されていることを特徴とする。 Or In 2 of the bogie, the operating lever is characterized in that it is formed is supported on the rear luggage carrier base foot pedal type.

【0012】この手段では、足踏ペダル形に形成された操作レバーから元の操作力が大きく得られる。 [0012] With this means, the original operating force from the operation lever formed on the foot pedal type to obtain large.

【0013】さらに、前述の課題を解決するため、本発明に係る台車用走行補助装置は、次のような手段を採用する。 Furthermore, in order to solve the problems described above, carriage for the drive assistance device according to the present invention employs the following means.

【0014】即ち、請求項4に記載のように、請求項1 [0014] That is, as described in claim 4, claim 1
〜3のいずれかの台車に備えられる操作レバー,補助輪,ブースタが荷物搭載台の下面に取付ブラケットにより装備可能であることを特徴とする。 Operation lever provided in to 3 or of the carriage of the auxiliary wheels, the booster is characterized in that it is equipped with the mounting bracket to the underside of the load carrier base.

【0015】この手段では、補助輪等が既存の台車に取付ブラケットで装備される。 [0015] With this means, the auxiliary wheel or the like is equipped with mounting brackets to the existing truck.

【0016】 [0016]

【発明の実施の形態】 以下、本発明に係る台車および台車用走行補助装置の実施の形態を図面に基づいて説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, will be explained based on the embodiment of the carriage and the drive assistance device for a truck according to the present invention with reference to the drawings.

【0017】この実施の形態では、走行駆動部を備えていない公知の手押しタイプからなる台車部Aと、台車部Aに着脱可能な走行補助部Bとから構成されている。 [0017] In this embodiment, a carriage unit A comprising a known hand-push type which is not provided with a traveling drive unit, and a drive assistance unit B detachably mountable to carriage unit A.

【0018】台車部Aは、上面に荷物を載せることができる平坦な荷物搭載台1と、荷物搭載台1の後部に立設された手押アーム2と、荷物搭載台1の下面の前部,後部にそれぞれ支持された走行輪3とからなる。 The carriage unit A includes a flat cargo mounting base 1 which can place luggage on the upper surface, and Te押 arm 2 provided upright on a rear portion of the luggage carrier base 1, the front portion of the lower surface of the luggage carrier base 1 , each consisting of a rear portion supported running wheel 3.

【0019】走行補助部Bは、操作レバー4,連結リンク5,ブースタ(ロッド6,油圧ポンプ7,油圧シリンダ8),補助輪9,取付ブラケット10の各部からなる。 The drive assistance section B, the operating lever 4, the connecting link 5, the booster (rod 6, hydraulic pump 7, the hydraulic cylinder 8), the auxiliary wheel 9, consists of various parts of the mounting bracket 10.

【0020】操作レバー4は、足を載せて押下げる足踏ペダル形に形成されてなるもので、荷物搭載台1の下面の後部に取付けられる(図3参照)。 The operating lever 4 is intended to put the feet formed by formed depress foot pedal type, it is attached to the rear portion of the lower surface of the luggage mounting base 1 (see FIG. 3).

【0021】連結リンク5は、複数のリンクアーム,リンク軸等からなるもので、操作レバー4とロッド6とを連結する。 The connecting link 5 has a plurality of link arms, made of link shaft or the like, for connecting the operation lever 4 and the rod 6.

【0022】ロッド6は、直状の棒部材からなるもので、連結リンク5に連結され荷物搭載台1の下面に沿って前部側へ向けて配設され、操作レバー4を押下げる下移動で前部側へスライドする前移動を奏する。 The rod 6 is made of a straight rod member, disposed toward along the lower surface of the concatenated luggage mounting base 1 to the connecting link 5 to the front side, under depresses moving the operation lever 4 in provides the movement before sliding to the front side.

【0023】油圧ポンプ7は、シリンダタイプからなるもので、ロッド6の配設延長側に配置されてロッド6の前移動で内蔵している油が加圧される。 The hydraulic pump 7 is made of a cylinder type, oil is arranged distribution 設延 wavelength side of the rod 6 has a built-in pre-movement of the rod 6 is pressurized.

【0024】油圧シリンダ8は、シリンダロッド出没タイプからなるもので、荷物搭載台1の下面の前部側に回動可能に取付けられて加圧された油でシリンダロッドを進出させる。 The hydraulic cylinder 8 is made of a cylinder rod retractable type, is advanced a cylinder rod on the front side of the lower surface of the luggage carrier base 1 pivotably mounted with pressurized oil. この油圧シリンダ8は、図2に詳細に示されるように、内部に油の逆流を阻止する逆止弁8aを備えている。 The hydraulic cylinder 8, as shown in detail in FIG. 2, is provided with a check valve 8a which prevents backflow of the oil therein. また、逆止弁8aには、逆止機能を保持,解除する操作片8bが接続されている。 Further, the check valve 8a, holding a check function, the operation piece 8b for releasing connected. 操作片8bは、操作レバー4に隣接して配置される。 Operating piece 8b is positioned adjacent to the operating lever 4.

【0025】補助輪9は、支持アーム9aと車輪9bとからなるもので、支持アーム9aが荷物搭載台1の下面の前部側,後部側のほぼ中間部に回動可能に支持されて前部側へ延び、油圧シリンダ8のシリンダロッドの進出で下方へ回動し支持高さが高くなるようになっている。 The auxiliary wheel 9, the support arm 9a and made of a wheel 9b, the front side of the lower surface of the support arms 9a luggage carrier base 1, before being supported substantially rotatably to the intermediate portion of the rear side extend part side, so that the pivot support height downwardly advancement of the cylinder rod of the hydraulic cylinder 8 is increased.
この補助輪9は、図4に詳細に示されるように、支持アーム9a,車輪9bの間に逆回転を阻止する逆転阻止機構9cを備えている。 The auxiliary wheel 9 is provided as shown in detail in FIG. 4, the support arm 9a, a reverse rotation prevention mechanism 9c to prevent the reverse rotation between the wheels 9b.

【0026】取付ブラケット10は、L字形片,T字形片等からなるもので、操作レバー4,連結リンク5,ロッド6,油圧ポンプ7,油圧シリンダ8,補助輪9の各部を荷物搭載台1の下面に取付けることができるようになっている(図5参照)。 The mounting bracket 10, L-shaped piece, made of a T-shaped piece or the like, the operating lever 4, the connecting link 5, the rod 6, the hydraulic pump 7, the hydraulic cylinder 8, each unit package mounting base 1 a of the auxiliary wheel 9 and it is capable of attaching the a lower surface (see Fig. 5).

【0027】この実施の形態によると、公知の手押しタイプからなる台車部Aに対して、走行補助部Bを取付ブラケット10を利用して容易に装備することができる。 [0027] According to this embodiment, with respect to carriage unit A comprising a known hand-push type, it can be easily equipped with a drive-assisting unit B by utilizing the mounting bracket 10.
しかも、荷物搭載台1の下面に装備されるため、他の各部によって装備が妨げられることがない。 Moreover, since it is mounted on the lower surface of the luggage carrier base 1, it is not hindered equipped with other units. また、走行補助部Bが簡素な流体圧応動構造に構成されるため、安価,容易に製造することができる。 Further, since the drive-assisting unit B is configured to simple fluids 圧応 kinematic structure can inexpensively, easily manufactured.

【0028】台車部Aに走行補助部Bが装備されると、 [0028] When the drive assistance unit B is equipped with a truck unit A,
前述の従来例と同様に、操作レバー4の操作により、補助輪9の支持高さを高くして走行輪3を走行面Rから浮かせて、段差を乗越えることができる(図1(B)参照)。 As in the conventional example described above, the operation of the operating lever 4, by floating the running wheel 3 from the travel surface R by increasing the support height of the auxiliary wheel 9, it is possible to overcome the step (FIG. 1 (B) reference).

【0029】このとき、操作レバー4が足踏ペダル形で元の操作力を大きくすることができる。 [0029] At this time, it is possible to control lever 4 is increased to the original operating force in foot pedal type. しかも、元の操作力がブースタ(ロッド6,油圧ポンプ7,油圧シリンダ8)で増幅される。 Moreover, the original operating force is amplified by the booster (rod 6, hydraulic pump 7, the hydraulic cylinder 8). 従って、荷物搭載台1に荷物が載せられた荷重状態でも、荷重に抗して補助輪9の支持高さを確実に可変することができる。 Accordingly, even in a load state where the baggage has been placed on the luggage carrier base 1, it can be varied to ensure the support height of the auxiliary wheel 9 against the load.

【0030】なお、補助輪9に備えられている逆転阻止機構9cは、段差を乗越える際の荷物搭載台1の傾斜で車輪9bに掛かる逆回転力(走行方向とは逆方向への回転力)による車輪9bの回転を阻止する。 [0030] Incidentally, the reverse rotation prevention mechanism 9c provided in the auxiliary wheel 9, rotational force in the opposite direction to the reverse rotational force (running direction applied to the wheel 9b in luggage mounting base 1 slope when overcome a step ) prevents rotation of the wheel 9b by. 従って、段差では、後退することなく円滑に乗越えることができる。 Thus, in step it can smoothly pass over it without retracting.

【0031】また、段差を乗越えた後には、図2(B) Further, after the get over the difference in level, and FIG. 2 (B)
に示すように、操作片8bにより逆止弁8aの逆止機能を解除して、操作レバー4を逆方向へ戻すことになる。 As shown in, clear the check function of the check valve 8a by the operation piece 8b, thus returning the operating lever 4 in the reverse direction.
この操作は、油圧シリンダ8の油圧の反力で円滑に奏される。 This operation is smoothly achieved by the reaction force of the hydraulic pressure of the hydraulic cylinder 8.

【0032】以上、図示した実施の形態の外に、台車部Aに走行駆動部を備えた構成とすることも可能である。 The above, in addition to the illustrated embodiment, it is also possible to adopt a configuration provided with a traveling drive unit to the carriage unit A.

【0033】さらに、ブースタとして、空気圧,ガス圧に応動するものを選択することもできる。 Furthermore, it as a booster, pneumatic, also be chosen which is responsive to the gas pressure.

【0034】 [0034]

【発明の効果】 以上のように、本発明に係る台車は、 As it is evident from the foregoing description, truck according to the present invention,
操作レバーの操作力がブースタで増幅されて補助輪に伝達されるため、荷重に抗して補助輪の支持高さが確実に可変される効果がある。 Since the operating force of the operating lever is transmitted to the auxiliary wheel is amplified by the booster, the effect of the support height of the auxiliary wheel is reliably variably against the load.

【0035】また、請求項2として、ブースタが簡素な流体圧応動構造に構成されるため、安価,容易に製造することができる効果がある。 Further, as claimed in claim 2, since the booster is configured in a simple fluid 圧応 dynamic structure, low cost, there is an effect that can be easily manufactured.

【0036】また、請求項3として、足踏ペダル形に形成された操作レバーから元の操作力が大きく得られるため、荷重に抗して補助輪の支持高さがより確実に可変される効果がある。 Further, as claimed in claim 3, since the original operating force from the formed operating lever foot pedal type to obtain large effect supporting height of the auxiliary wheel against the load is variably reliably there is.

【0037】さらに、本発明に係る台車用走行補助装置は、取付ブラケットを利用し荷物搭載台に取付けられるためて、台車に容易に装備可能である効果がある。 Furthermore, carriage for the drive assistance device according to the present invention, for attachment to the package mounting table using a mounting bracket, the effect is easily installed in the carriage.

【0038】なた、荷物搭載台の下面に取付けられるため、台車の他の各部によって装備が妨げられることがない効果がある。 [0038] thee, because it is attached to the lower surface of the luggage mounting base, there is an effect will not be equipped by other various parts of the truck is prevented.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】 本発明に係る台車および台車用走行補助装置の実施の形態を示す側面図であり、(A)が通常走行状態,(B)が段差乗越え状態を示している。 Figure 1 is a side view showing an embodiment of the carriage and carriage for the drive assistance device according to the invention, showing (A) the normal running state, the state get over level difference (B).

【図2】 図1の要部の簡略化した構成図であり、 Figure 2 is a simplified block diagram of a main portion of FIG. 1,
(A)が補助輪の支持高さを高くした状態を示し、 (A) indicates the high state of the support height of the auxiliary wheel,
(B)が補助輪の支持高さを低くした状態を示している。 (B) shows a state where the lower support height of the auxiliary wheel.

【図3】 図1の要部の拡大図である。 FIG. 3 is an enlarged view of a main part of Figure 1.

【図4】 図1の他の要部の拡大断面図である。 4 is an enlarged cross-sectional view of another essential part of FIG.

【図5】 図1の各部の未装備状態図である。 FIG. 5 is not yet equipped with state diagram of each part of Figure 1.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 荷物搭載台 3 走行輪 4 操作レバー 6 ロッド(ブースタ) 7 油圧ポンプ(ブースタ) 8 油圧シリンダ(ブースタ) 9 補助輪 10 取付ブラケット 1 luggage carrier base 3 running wheels 4 operating lever 6 rod (booster) 7 hydraulic pump (booster) 8 hydraulic cylinder (booster) 9 auxiliary wheels 10 mounting bracket

Claims (4)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 荷物搭載台の下面に走行輪と補助輪とが支持され、補助輪の荷物搭載台への支持高さが操作レバーにより可変される台車において、操作レバーと補助輪との間に操作力を増幅するブースタを連結したことを特徴とする台車。 [Claim 1] A running wheel on the lower surface of the luggage mounting base and the auxiliary wheel is supported, in a truck cargo supporting height of the mounting base of the auxiliary wheels is varied by the operating lever, between the operating lever auxiliary wheel carriage, characterized in that the concatenation of booster for amplifying the operating force to.
  2. 【請求項2】 請求項1の台車において、ブースタは、 2. A truck according to claim 1, booster,
    操作レバーに連結されたロッドと、ロッドに連結され内蔵した流体がロッドで加圧される流体圧ポンプと、流体圧ポンプに接続して補助輪に連結され流体圧に応動する流体圧シリンダとからなることを特徴とする台車。 From a rod connected to the operating lever, a fluid pressure pump fluid is pressurized by a rod that incorporates linked to the rod, a fluid pressure cylinder which operates in response to fluid pressure is connected to the auxiliary wheel connected to the hydraulic pump truck, characterized in that it consists.
  3. 【請求項3】 請求項1または2の台車において、操作レバーは荷物搭載台の後部に支持され足踏ペダル形に形成されていることを特徴とする台車。 3. A dolly according to claim 1 or 2, the operating lever is characterized in that it is formed is supported on the rear luggage carrier base foot pedal type truck.
  4. 【請求項4】 請求項1〜3のいずれかの台車に備えられる操作レバー,補助輪,ブースタが荷物搭載台の下面に取付ブラケットにより装備可能であることを特徴とする台車用走補助行装置。 4. A control lever provided in one of the carriage of claims 1 to 3, auxiliary wheels, run truck auxiliary line device wherein the booster can be equipped with the mounting bracket to the underside of the load carrier base .
JP28705598A 1998-10-08 1998-10-08 Carriage and travel assisting device for carriage Pending JP2000118407A (en)

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JP28705598A JP2000118407A (en) 1998-10-08 1998-10-08 Carriage and travel assisting device for carriage

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JP28705598A JP2000118407A (en) 1998-10-08 1998-10-08 Carriage and travel assisting device for carriage

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JP2000118407A true true JP2000118407A (en) 2000-04-25

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JP28705598A Pending JP2000118407A (en) 1998-10-08 1998-10-08 Carriage and travel assisting device for carriage

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505359B2 (en) 1996-04-12 2003-01-14 Hill-Rom Services, Inc. Stretcher center wheel mechanism
US6588523B2 (en) 1999-09-15 2003-07-08 Hill-Rom Services, Inc. Stretcher having a motorized wheel
US6752224B2 (en) 2002-02-28 2004-06-22 Stryker Corporation Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system
US6772850B1 (en) 2000-01-21 2004-08-10 Stryker Corporation Power assisted wheeled carriage
US9259369B2 (en) 2012-09-18 2016-02-16 Stryker Corporation Powered patient support apparatus
US9707143B2 (en) 2012-08-11 2017-07-18 Hill-Rom Services, Inc. Person support apparatus power drive system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505359B2 (en) 1996-04-12 2003-01-14 Hill-Rom Services, Inc. Stretcher center wheel mechanism
US6772460B2 (en) 1996-04-12 2004-08-10 Hill-Rom Services, Inc. Pedal arrangement for stretcher apparatus
US6588523B2 (en) 1999-09-15 2003-07-08 Hill-Rom Services, Inc. Stretcher having a motorized wheel
US6772850B1 (en) 2000-01-21 2004-08-10 Stryker Corporation Power assisted wheeled carriage
US7007765B2 (en) 2000-01-21 2006-03-07 Stryker Corporation Method for driving a wheeled carriage
US6752224B2 (en) 2002-02-28 2004-06-22 Stryker Corporation Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system
US9707143B2 (en) 2012-08-11 2017-07-18 Hill-Rom Services, Inc. Person support apparatus power drive system
US9259369B2 (en) 2012-09-18 2016-02-16 Stryker Corporation Powered patient support apparatus

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