JP5869870B2

JP5869870B2 - Work cart

Info

Publication number: JP5869870B2
Application number: JP2011279740A
Authority: JP
Inventors: 秋山　保行; 保行秋山; 孝和内藤; 誠二細川; 長谷川　勉; 勉長谷川
Original assignee: East Japan Railway Co
Current assignee: East Japan Railway Co
Priority date: 2011-12-21
Filing date: 2011-12-21
Publication date: 2016-02-24
Anticipated expiration: 2031-12-21
Also published as: JP2013129295A

Description

本発明は、静止時にはレール上を走行する車輪を制動状態に保持し、走行時には制動ロッドの引張り動作によりその制動状態から解除状態に切り替えるブレーキ部を設けた作業台車に関し、特に、牽引車によって作業台車を牽引する場合も、押す場合も簡単な構造により制動状態を解除することができる作業台車に関する。 The present invention relates to a work carriage provided with a brake unit that keeps a wheel traveling on a rail in a braking state when stationary and switches a braking state from a braking state to a released state by pulling a braking rod during traveling. The present invention relates to a work cart that can release a braking state with a simple structure both when towing and pushing a cart.

レール上を走行する車輪を通常状態では制動状態に保持する一方、作動レバーの動作により制動状態を解除するようにしたブレーキ部を設けた作業台車に関し、本件出願人は、台車本体にカートや他の台車と連結するための連結シャフトを軸方向に移動自在に配設し、この連結シャフトの軸方向への移動により基準状態から台車本体の前後いずれの方向にも揺動動作される押動アームと、この押動アームの揺動動作が台車本体の前後いずれの方向であっても常に一定方向に揺動動作される駆動アームとから構成される揺動機構を配設し、駆動アームの揺動動作を前記制動装置の作動レバーに伝達する伝達機構を配設しており、押動アームが基準状態から台車本体の前後いずれの方向に揺動動作されても駆動アームが常に一定方向に揺動動作されて、伝達機構を介して制動装置の作動レバーを動作させて制動を解除させるようにした作業台車を提案している（例えば、特許文献１照。）。 With respect to a work cart provided with a brake unit that keeps the wheels traveling on the rails in a braking state in a normal state and releases the braking state by the operation of the operation lever, A push shaft that is movably disposed in the axial direction by a connecting shaft for connecting to the bogie of the vehicle, and that swings in the axial direction of the bogie body from the reference state by movement of the connecting shaft in the axial direction. And a drive arm that always swings in a fixed direction regardless of whether the push arm swings in the front or back direction of the carriage body. A transmission mechanism is provided for transmitting the moving operation to the actuating lever of the braking device, so that the drive arm always swings in a fixed direction regardless of whether the push arm swings in the forward or backward direction of the carriage body from the reference state. Dynamic movement Te, by operating the operation lever of the braking device via a transmission mechanism proposes a work vehicles which is adapted to release the brake (e.g., Patent Document 1 irradiation.).

特許第４４４１００２号公報（特開平１０−１９７３１１号公報）Japanese Patent No. 444002 (Japanese Patent Laid-Open No. 10-197311)

しかし、前記特許文献１の作業台車は、その図１に示すように両端部が台車本体の前後部から突出される連結シャフトが支持されており、この連結シャフトの両端部にエンジン等の動力装置を搭載したカートあるいは他の台車に連結するための連結板が一体に形成され、連結シャフトと枠体の長さ方向ほぼ中央部の台車本体の一側端部に中央支持板を設け、中央支持板にワイヤ支持板や、押動ローラ、押動アーム、駆動アーム等を設け、ワイヤ支持板をワイヤを介して制動装置（ブレーキ部）に連結しているため、構成が複雑であるという問題がある。また、ワイヤにより制動装置（ブレーキ部）に連結しているため、経年変化などによりワイヤが伸び、ワイヤの調整が必要であるという問題もある。さらに、作業台車の中央に連結シャフトが設けられていると共に、揺動機構やワイヤを設けているため、作業台車より深い荷物などは、運搬することができない、という問題もある。 However, as shown in FIG. 1, the working carriage of Patent Document 1 supports connection shafts whose both ends protrude from the front and rear parts of the carriage body, and a power device such as an engine is provided at both ends of the connection shaft. A connecting plate for connecting to a cart or other cart on which the vehicle is mounted is formed integrally, and a central support plate is provided at one end of the main body of the cart approximately at the center in the longitudinal direction of the connecting shaft and the frame. Since the plate is provided with a wire support plate, a push roller, a push arm, a drive arm, etc., and the wire support plate is connected to the braking device (brake part) via the wire, there is a problem that the configuration is complicated. is there. In addition, since the wire is connected to the braking device (brake part) by the wire, there is a problem that the wire is stretched due to secular change or the like and adjustment of the wire is necessary. Furthermore, since the connecting shaft is provided at the center of the work carriage, and the swing mechanism and the wire are provided, there is a problem that a load deeper than the work carriage cannot be transported.

そこで、本発明は、これらの問題点等に着目してなされたもので、作業台車の中央に連結シャフトや中央支持板を設けることなく、またワイヤを使用せずに牽引車によって牽引する場合も、押す場合も簡単な構造により制動状態を解除することができる作業台車を提供することを目的とする。 Therefore, the present invention has been made paying attention to these problems and the like, and there is a case in which the towing vehicle is towed without using a connecting shaft and a central support plate in the center of the work carriage and without using a wire. An object of the present invention is to provide a work carriage that can release a braking state with a simple structure even when it is pushed.

前記課題を解決するため、本発明の作業台車は、静止時にはレール上を走行する車輪を制動状態に保持し、走行時には制動ロッドの引張り動作によりその制動状態から解除状態に切り替えるブレーキ部を設けた作業台車であって、当該作業台車に基端部を回転可能に取り付ける一方、中間部に進退動作により前記ブレーキ部の制動状態と解除状態とを制御する制動ロッドの一端部が連結された作動レバーと、当該作業台車に対し固定部材を介し前後いずれの方向にもスライド可能に取り付けられ、先端部に牽引車と連結するための牽引車連結部が設けられた連結スライドシャフトと、両端部以外の第１中間部で回転軸を介し前記作業台車に回転可能に取り付けられ、その基端部に前記連結スライドシャフトの後端部が連結ピンにより連結される一方、その先端部に前記連結スライドシャフトが前方に引かれスライドした際に回転して前記ブレーキ部の作動レバーに当接して制動を解除させる前進時当接部を設けると共に、前記第１中間部と前記基端部との間の第２中間部に前記連結スライドシャフトが後方に押されスライドした際に回転して前記ブレーキ部の作動レバーに当接して制動を解除させる後退時当接部を設けたリンク部材と、を有し、前進走行時における前記前進時当接部が前記作動レバーに当接して前記ブレーキ部を制動状態から解除状態に切り替えるときの前記連結スライドシャフトのスライド量と、後退時における前記後進時当接部が前記作動レバーに当接して前記ブレーキ部を制動状態から解除状態に切り替えるときの前記連結スライドシャフトのスライド量とが同一値に近付くように前記リンク部材における第１中間部の回転軸から前進時当接部までの長さと、第１中間部の回転軸から後退時当接部までの長さとが設定されていることを特徴とする。
ここで、前記連結スライドシャフトには、その軸方向に前記ブレーキ部の引き代の長さとほぼ同じ長さの前後方向長孔が形成されており、当該作業台車を引いて牽引する場合は、当該作業台車が静止していて前記ブレーキ部が制動状態にある場合に固定部材のピン孔を介し前記前後方向長孔の牽引車側の内周縁近傍に惰性走行禁止ピンを固定する一方、当該作業台車を押してバック走行させる場合は、当該作業台車が静止していて前記ブレーキ部が制動状態にある場合に固定部材のピン孔を介し前記前後方向長孔の当該作業台車側の内周縁近傍に惰性走行禁止ピンを固定するようにすると良い。
また、前記作動レバーは、ブレーキ部が設けられた車輪側の当該作業台車の側方フレームに基端部が回転可能に取り付けられる一方、前記連結スライドシャフトは、ブレーキ部が設けられた当該作業台車の前側フレームまたは後側フレームに取り付けられ、前記リンク部材は、前記連結スライドシャフトが設けられた前側フレームまたは後側フレームと、側方フレームにおける前記作動レバーが取り付けられた箇所との間で、両側方フレーム間に渡された中間フレームに回転軸を介し回転可能に取り付けられているようにすると良い。 In order to solve the above-described problems, the work carriage of the present invention is provided with a brake unit that keeps the wheels traveling on the rails in a braking state when stationary and switches from the braking state to the released state by a pulling operation of the braking rod when traveling. An operation lever, which is a work carriage and has a base end portion rotatably attached to the work carriage, and one end portion of a brake rod for controlling a braking state and a release state of the brake portion by an advancing and retreating operation at an intermediate portion. And a connecting slide shaft that is slidably attached to the working carriage in either of the front and rear directions via a fixing member, and that has a towing vehicle connecting portion for connecting to the towing vehicle at the tip, and other than both ends A first intermediate portion is rotatably attached to the work carriage via a rotation shaft, and a rear end portion of the connection slide shaft is connected to a base end portion thereof by a connection pin. On the other hand, a forward contact portion that rotates when the connecting slide shaft is pulled forward and slides at the distal end thereof to contact the operating lever of the brake portion to release braking is provided, and the first intermediate portion A reverse contact portion that rotates when the connecting slide shaft is pushed rearward and slides to a second intermediate portion between the base end portion and the base end portion to release the brake by contacting the operating lever of the brake portion A link member provided, and a sliding amount of the connecting slide shaft when the forward contact portion during forward traveling contacts the operating lever to switch the brake portion from a braking state to a released state; The sliding amount of the connecting slide shaft when the reverse contact portion at the time of reverse movement contacts the operating lever and switches the brake portion from the braking state to the release state. The length of the first intermediate section rotating shaft to the contact portion during forward, a length from the axis of rotation of the first intermediate portion to the contact portion during retraction is set in said link member so as to approach the same value It is characterized by that.
Here, the connecting slide shaft is formed with a longitudinally long hole having substantially the same length as the pulling allowance of the brake portion in the axial direction, and when pulling and pulling the work carriage, When the work carriage is stationary and the brake part is in a braking state, the inertia traveling prohibition pin is fixed to the vicinity of the inner peripheral edge of the longitudinally long hole on the towing vehicle side through the pin hole of the fixing member, while the work carriage If the work carriage is stationary and the brake part is in a braking state, when the work carriage is stationary, the inertial travel is performed in the vicinity of the inner periphery of the work carriage side of the longitudinally long hole through the pin hole of the fixing member. It is recommended to fix the prohibition pin.
The actuating lever is rotatably attached to a side frame of the work cart on the wheel side provided with the brake portion, while the connecting slide shaft is provided on the work cart provided with the brake portion. The link member is attached to both the front frame or the rear frame provided with the connecting slide shaft and the portion of the side frame where the operating lever is attached. It is preferable that the intermediate frame passed between the two frames is rotatably attached via a rotating shaft.

本発明の作業台車によれば、作業台車に設けたブレーキ部とリンク部材と連結スライド部等により、静止時にはレール上を走行する車輪を制動状態に保持する一方、走行時には制動ロッドの引張り動作により車輪をその制動状態から解除状態に切り替えるようにしたので、作業台車の中央に連結シャフトや中央支持板を設けることなく、またワイヤを使用せずに牽引車によって牽引する場合も、押す場合も簡単な構造により制動状態を解除することができる。
特に、本発明の作業台車では、前進走行時における前進時当接部が作動レバーに当接してブレーキ部を制動状態から解除状態に切り替えるときの連結スライドシャフトのスライド量と、後退時における後進時当接部が作動レバーに当接してブレーキ部を制動状態から解除状態に切り替えるときの連結スライドシャフトのスライド量とが同一値に近付くようにリンク部材における第１中間部の回転軸から前進時当接部までの長さと、第１中間部の回転軸から後退時当接部までの長さとが設定されているので、前進走行時およびバック走行時のブレーキ部１２の制動および解除動作の違和感を少なくすることができる。
According to the work carriage of the present invention, the brake part, the link member, the connecting slide part, and the like provided on the work carriage hold the wheels running on the rails in a braking state when stationary, while the brake rods are pulled during the running. Since the wheels are switched from the braking state to the released state, it is easy to pull or push by a towing vehicle without using a connecting shaft or center support plate in the center of the work carriage, and without using a wire. The braking state can be released by a simple structure.
In particular, in the work cart of the present invention, the forward contact portion during forward travel contacts the operating lever, and the sliding amount of the connecting slide shaft when the brake portion is switched from the braking state to the release state, and the reverse travel time during backward movement When the abutting portion comes into contact with the actuating lever and the sliding amount of the connecting slide shaft when the brake portion is switched from the braking state to the released state approaches the same value, the link member moves forward from the rotary shaft of the first intermediate portion. Since the length to the contact portion and the length from the rotation shaft of the first intermediate portion to the contact portion at the time of reverse movement are set, the braking and releasing operation of the brake portion 12 at the time of forward travel and back travel is uncomfortable. Can be reduced.

本発明に係る実施形態の作業台車に牽引車を連結した状態を示す平面図である。It is a top view which shows the state which connected the tow truck with the work trolley | bogie of embodiment which concerns on this invention. 実施形態の作業台車に牽引車を連結した状態を示す正面図である。It is a front view which shows the state which connected the towing vehicle to the work trolley | bogie of embodiment. 実施形態の作業台車の平面図である。It is a top view of the work trolley | bogie of embodiment. 実施形態の作業台車の正面図である。It is a front view of the work trolley | bogie of embodiment. 実施形態の作業台車の主要部を拡大して示す主要部拡大図である。It is a principal part enlarged view which expands and shows the principal part of the work trolley | bogie of embodiment. 実施形態の作業台車が牽引車によって図上Ａ方向に牽引された際のブレーキ部の状態を示す図である。It is a figure which shows the state of the brake part when the work trolley | bogie of embodiment is pulled by the A direction on a figure with a tow truck. 実施形態の作業台車を図上Ａ方向に牽引していて停止する際のブレーキ部の状態を示す図である。It is a figure which shows the state of the brake part at the time of pulling the work trolley | bogie of embodiment to the A direction on a figure, and stopping. 実施形態の作業台車が牽引車によって図上Ｂ方向に押されバック走行する際のブレーキ部の状態を示す図である。It is a figure which shows the state of the brake part when the work trolley | bogie of embodiment pushes back in a figure B direction with a tow vehicle, and carries out back travel. 実施形態の作業台車を図上Ｂ方向にバック走行していて停止する際のブレーキ部の状態を示す図である。It is a figure which shows the state of the brake part at the time of carrying out back drive | working of the work trolley | bogie of embodiment, and B direction on a figure.

次に、本実施形態の作業台車１について説明する。
図１および図２に示すように、本実施形態の作業台車１は、牽引車３等に連結シャフト４を介し連結されるものである。 Next, the work cart 1 of this embodiment will be described.
As shown in FIGS. 1 and 2, the work carriage 1 of this embodiment is connected to a towing vehicle 3 or the like via a connecting shaft 4.

牽引車３は、作業者が運転して、エンジンやモータ等の駆動源によりレール２上を前進走行したり、バック走行（後退走行）するものである。従って、この牽引車３に連結シャフト４を介し連結された作業台車１は、牽引車３に引かれてレール２上を前進走行したり、牽引車３に前方から押されてバック走行（後退走行）可能である。 The towing vehicle 3 is driven by an operator and travels forward on the rail 2 by a drive source such as an engine or a motor, or travels backward (reverse travel). Therefore, the work carriage 1 connected to the towing vehicle 3 via the connecting shaft 4 is pulled forward by the towing vehicle 3 and travels forward on the rail 2, or is pushed by the towing vehicle 3 from the front and travels backward (reverse traveling). It is possible.

作業台車１は、図３および図４に示すように台車本体１１と、ブレーキ部（制動部）１２とを有し、作業台車１自体にはエンジンやモータ等の動力源を備えていない。 As shown in FIGS. 3 and 4, the work cart 1 includes a cart body 11 and a brake unit (braking unit) 12, and the work cart 1 itself does not include a power source such as an engine or a motor.

台車本体１１は、レール２の方向に延びる両側の側方フレーム１１１ａ，１１１ｂと、側方フレーム１１１ａ，１１１ｂの前後に亘って設けられる前側フレーム１１１ｃ、後側フレーム１１１ｄおよび中間フレーム１１１ｅ〜１１１ｇを有する。台車本体１１の前後には、図３に示すように、それぞれ、レール２上を走行する車軸１１２ｃ，１１３ｃを介し連結された前側車輪１１２ａ，１１２ｂおよび後側車輪１１３ａ，１１３ｂが設けられている。 The cart body 11 has side frames 111a and 111b on both sides extending in the direction of the rail 2, and a front frame 111c, a rear frame 111d, and intermediate frames 111e to 111g provided across the side frames 111a and 111b. . As shown in FIG. 3, front and rear wheels 112a and 112b and rear wheels 113a and 113b that are connected via axles 112c and 113c that run on the rail 2 are provided on the front and rear sides of the carriage body 11, respectively.

また、この作業台車１は、前側が牽引されるタイプであり、この作業台車１には、台車本体１１の前側に、図５に示すように、ブレーキ部（制動部）１２と、作動レバー１２ｄと、リンク部材１３と、連結スライド部１４とが設けられている。 Further, the work cart 1 is of a type in which the front side is pulled, and the work cart 1 includes a brake unit (braking unit) 12 and an operation lever 12d on the front side of the cart body 11 as shown in FIG. And the link member 13 and the connection slide part 14 are provided.

ブレーキ部１２は、図５に示すように、右側の前側車輪１１２ａ近傍に設けられており、ディスクホイール１２ａと、ブレーキ本体１２ｂと、制動ロッド１２ｃとを有しており、図示しないスプリングの弾性力により静止時には前側車輪１１２ａ，１１２ｂを制動状態に保持し、走行時には制動ロッド１２ｃの引張り動作によりその制動状態から解除状態に切り替えるもので、例えば、油圧式のディスクブレーキから構成している。ディスクホイール１２ａは、右側の前側車輪１１２ａと左側の前側車輪１１２ｂを連結する車軸１１２ｃに設けられている。ブレーキ本体１２ｂは、ブレーキシュー１２ｂ１，１２ｂ２によりディスクホイール１２ａを挟むことにより車輪１１２ａ，１１２ｂにブレーキ（制動）をかけるもので、静止時には図示しないスプリングの弾性力によりブレーキシュー１２ｂ１，１２ｂ２を密着させて前側車輪１１２ａ，１１２ｂを制動状態に保持する一方、走行時には油圧等によりブレーキシュー１２ｂ１，１２ｂ２を拡げて制動状態から解除状態に切り替えるものである。そして、制動ロッド１２ｃの一端部は、ブレーキ本体１２ｂの入力側が連結されている一方、制動ロッド１２ｃの他端部は、作動レバー１２ｄの中間部１２ｄ２にピンにより回転可能に連結されている。なお、ここでは、ブレーキ部１２は、油圧式のディスクブレーキを構成して説明したが、機械式のブレーキでも勿論よく、ブレーキ部１２の構造自体は公知である。また、ブレーキ部１２を、後側車輪１１３ａ，１１３ｂに設けても勿論良い。 As shown in FIG. 5, the brake unit 12 is provided in the vicinity of the right front wheel 112a, and includes a disc wheel 12a, a brake body 12b, and a brake rod 12c. Thus, the front wheels 112a and 112b are held in a braking state when stationary, and are switched from the braking state to the released state by a pulling operation of the braking rod 12c during traveling. For example, a hydraulic disc brake is used. The disc wheel 12a is provided on an axle 112c that connects the right front wheel 112a and the left front wheel 112b. The brake body 12b brakes the wheels 112a and 112b by sandwiching the disc wheel 12a between the brake shoes 12b1 and 12b2. When the brake body 12b is stationary, the brake shoes 12b1 and 12b2 are brought into close contact with the elastic force of a spring (not shown). While holding the front wheels 112a and 112b in a braking state, the brake shoes 12b1 and 12b2 are expanded by hydraulic pressure or the like during traveling to switch from the braking state to the released state. One end of the brake rod 12c is connected to the input side of the brake body 12b, while the other end of the brake rod 12c is rotatably connected to the intermediate portion 12d2 of the operating lever 12d by a pin. Here, the brake unit 12 has been described as a hydraulic disc brake, but it may of course be a mechanical brake, and the structure of the brake unit 12 is well known. Of course, the brake unit 12 may be provided on the rear wheels 113a and 113b.

作動レバー１２ｄは、中間部１２ｄ２が制動ロッド１２ｃの他端部に連結ピンにより連結されている一方、その基端部１２ｄ１は、回転軸１２ｄ１１を介し台車本体１１の右側フレーム１１１ａに回転可能に連結されている。そして、中間部１２ｄ２と、先端部１２ｄ３との間には、それぞれ、リンク部材１３の後述する前進時当接ローラ１３ａ１と、後退時当接ローラ１３ｃ１とが当接する当接板１２ｄ２１，１２ｄ３１が設けられている。なお、作業台車１が静止状態にある場合、ブレーキ部１２は制動（ブレーキ）状態にあり、図５に示すように、制動ロッド１２ｃはほぼレール２に対し直角方向を向いており、制動ロッド１２ｃの当接板１２ｄ２１，１２ｄ３１にそれぞれリンク部材１３の前進時当接ローラ１３ａ１と、後退時当接ローラ１３ｃ１とが同時に当接している。 The actuating lever 12d has an intermediate portion 12d2 connected to the other end portion of the brake rod 12c by a connecting pin, and a base end portion 12d1 is rotatably connected to the right frame 111a of the carriage body 11 via a rotating shaft 12d11. Has been. And between the intermediate part 12d2 and the front-end | tip part 12d3, the contact plates 12d21 and 12d31 which the contact roller 13a1 at the time of advancing of the link member 13 mentioned later and the contact roller 13c1 at the time of retraction contact | abut are provided, respectively. It has been. When the work carriage 1 is in a stationary state, the brake unit 12 is in a braking (braking) state, and as shown in FIG. 5, the braking rod 12c is substantially perpendicular to the rail 2, and the braking rod 12c. The forward contact roller 13a1 and the backward contact roller 13c1 of the link member 13 are simultaneously in contact with the contact plates 12d21 and 12d31, respectively.

リンク部材１３は、先端部１３ａ、第１中間部１３ｂ、第２中間部１３ｃ、基端部１３ｄを有し、第１中間部１３ｂで回転軸１３ｂ１を介し台車本体１１の中間フレーム１１１ｅに回転可能に取り付けられている。基端部１３ｄは、連結スライド部１４後端のリンク連結部１４ａ１の横方向長孔１４ａ２に連結ピン１３ｄ１により連結される一方、その先端部１３ａには、牽引車連結部１４ｂや連結スライドシャフト１４ｂ２，１４ｃ，１４ｄ、リンク連結部１４ａ１が前方（図上、Ａ方向）に引かれスライドした際にリンク部材１３が第１中間部１３ｂの回転軸１３ｂ１を中心に回転してブレーキ部１２の作動レバー１２ｄに当接して押し下げ、制動を解除させる前進時当接ローラ１３ａ１を設けている。さらに、第１中間部１３ｂと基端部１３ｄとの間の第２中間部１３ｃには、牽引車連結部１４ｂや連結スライドシャフト１４ｂ２，１４ｃ，１４ｄ、リンク連結部１４ａ１が後方（図上、Ｂ方向）に押されスライドした際に、リンク部材１３が第１中間部１３ｂの回転軸１３ｂ１を中心に回転してブレーキ部１２の作動レバー１２ｄに当接して押し下げ、制動を解除させる後退時当接ローラ１３ｃ１を設けている。 The link member 13 has a distal end portion 13a, a first intermediate portion 13b, a second intermediate portion 13c, and a base end portion 13d, and can rotate to the intermediate frame 111e of the carriage main body 11 via the rotation shaft 13b1 at the first intermediate portion 13b. Is attached. The base end portion 13d is connected to the laterally elongated hole 14a2 of the link connecting portion 14a1 at the rear end of the connecting slide portion 14 by a connecting pin 13d1, while the tip end portion 13a is connected to the traction vehicle connecting portion 14b and the connecting slide shaft 14b2. , 14c, 14d, and the link connecting portion 14a1 are pulled forward and slide in the direction (A direction in the figure), the link member 13 rotates about the rotation shaft 13b1 of the first intermediate portion 13b, and the actuating lever of the brake portion 12 An advancing contact roller 13a1 is provided that presses down and releases the brake 12d. Further, the second intermediate portion 13c between the first intermediate portion 13b and the base end portion 13d includes a traction vehicle connecting portion 14b, connecting slide shafts 14b2, 14c, 14d, and a link connecting portion 14a1 at the rear (B in the figure). The link member 13 rotates about the rotation shaft 13b1 of the first intermediate portion 13b and abuts against the operating lever 12d of the brake portion 12 to push down and release the brake. A roller 13c1 is provided.

ここで、本実施形態の作業台車１では、リンク部材１３における第１中間部１３ｂの回転軸１３ｂ１から前進時当接ローラ１３ａ１までの長さを、第１中間部１３ｂの回転軸１３ｂ１から後退時当接ローラ１３ｃ１までの長さより短くして、前進走行時に前進時当接ローラ１３ａ１が作動レバー１２ｄを後方に押してブレーキ部１２を制動状態から解除状態に切り替えるときの連結スライドシャフト１４ｂ２の前方スライド量と、バック走行時に後進時当接ローラ１３ｃ１が作動レバー１２ｄを後方に押してブレーキ部１２を制動状態から解除状態に切り替えるときの連結スライドシャフト１４ｂ２の後方スライド量とをほぼ同一値に近付けている。これにより、前進走行時およびバック走行時のブレーキ部１２の制動および解除動作の違和感を少なくすることができる。 Here, in the work carriage 1 of the present embodiment, the length from the rotation shaft 13b1 of the first intermediate portion 13b to the advancing contact roller 13a1 in the link member 13 is set to the time of retreating from the rotation shaft 13b1 of the first intermediate portion 13b. The forward slide amount of the connecting slide shaft 14b2 when the forward contact roller 13a1 pushes the operating lever 12d backward to switch the brake unit 12 from the braking state to the released state when traveling forward, shorter than the length to the contact roller 13c1. When the vehicle is traveling in reverse, the reverse contact roller 13c1 pushes the operating lever 12d rearward, and the rear slide amount of the connecting slide shaft 14b2 when the brake unit 12 is switched from the braking state to the released state is brought close to substantially the same value. Thereby, the uncomfortable feeling of braking and releasing operation of the brake unit 12 during forward traveling and reverse traveling can be reduced.

連結スライド部１４は、リンク部材１３の基端部１３ｄが連結ピン１３ｄ１を介し連結されるリンク連結部１４ａ１と、リンク連結部１４ａ１に接合された連結スライドシャフト１４ｂ２，１４ｃ，１４ｄと、連結スライドシャフト１４ｂ２，１４ｃ，１４ｄに接合された牽引車連結部１４ｂと、台車本体１１に固定され連結スライドシャフト１４ｂ２，１４ｃ，１４ｄをスライド可能に支持する第１固定部材１４ｅと、第１固定部材１４ｅと共に台車本体１１に固定される第２固定部材１４ｆと、走行時から停止する際の台車本体１１の惰性走行を禁止する惰性走行禁止ピン１４ｇを有する。 The connecting slide portion 14 includes a link connecting portion 14a1 to which the base end portion 13d of the link member 13 is connected via a connecting pin 13d1, connecting slide shafts 14b2, 14c, 14d joined to the link connecting portion 14a1, and a connecting slide shaft. A trolley connecting portion 14b joined to 14b2, 14c, 14d, a first fixing member 14e fixed to the carriage main body 11 and slidably supporting the connecting slide shafts 14b2, 14c, 14d, and a carriage together with the first fixing member 14e. It has the 2nd fixing member 14f fixed to the main body 11, and the inertia travel prohibition pin 14g which prohibits the inertia travel of the cart main body 11 at the time of stopping from the time of driving | running | working.

リンク連結部１４ａ１には、第１中間部１３ｂの回転軸１３ｂ１を中心に回転するリンク部材１３の基端部１３ｄの前後動を阻害しないように横方向長孔１４ａ２が設けられている。また、牽引車連結部１４ｂには、牽引車３の後部に連結された連結シャフト４の連結ピン４１が連結される連結孔１４ｂ１が形成されている。さらに、第２固定部材１４ｆには、惰性走行禁止ピン１４ｇが挿入される第１および第２ピン孔１４ｆ１，１４ｆ２が形成されている。 The link connecting portion 14a1 is provided with a laterally elongated hole 14a2 so as not to obstruct the back-and-forth movement of the base end portion 13d of the link member 13 that rotates about the rotation shaft 13b1 of the first intermediate portion 13b. Further, a connecting hole 14b1 for connecting the connecting pin 41 of the connecting shaft 4 connected to the rear portion of the towing vehicle 3 is formed in the towing vehicle connecting portion 14b. Further, the second fixing member 14f is formed with first and second pin holes 14f1 and 14f2 into which the inertia traveling prohibition pin 14g is inserted.

また、連結スライドシャフト１４ｂ２には、その軸方向、すなわちレール２の方向に、ブレーキ部１２の引き代、すなわち制動ロッド１２ｃの上死点と下死点との間の距離とほぼ同じ長さの前後方向長孔１４ｂ３が形成されている。そして、当該作業台車１を引いて牽引する場合は、当該作業台車１が静止していてブレーキ部１２が制動（ブレーキ）状態にあるときに惰性走行禁止ピン１４ｇが前後方向長孔１４ｂ３の牽引車３側の内周縁に当接するように惰性走行禁止ピン１４ｇを第２固定部材１４ｆの第２ピン孔１４ｆ２に挿入する一方（図５〜図７参照。）、当該作業台車１を押してバック走行させる場合は、当該作業台車１が静止していてブレーキ部１２が制動状態にあるときに惰性走行禁止ピン１４ｇが前後方向長孔１４ｂ３の当該作業台車１側の内周縁に当接するように惰性走行禁止ピン１４ｇを第２固定部材１４ｆの第１ピン孔１４ｆ１に挿入する（図８，９参照。）。このように牽引車２が走行時から停止する際に、作業台車１が慣性走行をするので、ブレーキ部１２が解除状態からブレーキ（制動）状態となった後、再度、解除状態になろうとするが、以上のように作業台車１を引っ張って牽引する場合と、作業台車１を押してバック走行する場合とで第２固定部材１４ｆの第１ピン孔１４ｆ１または第２ピン孔１４ｆ２に対する惰性走行禁止ピン１４ｇの挿入位置を替えることにより、作業台車１を引っ張って牽引する場合も、作業台車１を押してバック走行する場合も、ブレーキ部１２が解除状態からブレーキ（制動）状態となった時点で、作動レバー１２ｄがこれ以上作動しないようにして、ブレーキ部１２が再度、解除状態になることを禁止できる。 Further, the connecting slide shaft 14b2 has a length approximately the same as the distance between the top dead center and the bottom dead center of the brake rod 12c in the axial direction, that is, the direction of the rail 2. A longitudinal hole 14b3 is formed. When the work carriage 1 is pulled and towed, when the work carriage 1 is stationary and the brake portion 12 is in a braking (braking) state, the inertia traveling prohibition pin 14g is a towing vehicle having the longitudinal slot 14b3. The inertia travel prohibition pin 14g is inserted into the second pin hole 14f2 of the second fixing member 14f so as to abut against the inner peripheral edge on the third side (see FIGS. 5 to 7), and the work carriage 1 is pushed to travel backward. In this case, when the work carriage 1 is stationary and the brake portion 12 is in a braking state, the inertia travel prohibition pin 14g is prohibited from inertial travel so that the longitudinal long hole 14b3 contacts the inner peripheral edge of the work cart 1 side. The pin 14g is inserted into the first pin hole 14f1 of the second fixing member 14f (see FIGS. 8 and 9). Thus, when the towing vehicle 2 stops from the time of travel, the work carriage 1 travels inertially, so that after the brake unit 12 changes from the release state to the brake (braking) state, it tries to enter the release state again. However, the inertia travel prohibition pin with respect to the first pin hole 14f1 or the second pin hole 14f2 of the second fixing member 14f when the work cart 1 is pulled and pulled as described above and when the work cart 1 is pushed to travel backward. When the work carriage 1 is pulled and pulled by changing the insertion position of 14g, or when the work truck 1 is pushed to travel backward, it is activated when the brake unit 12 changes from the released state to the brake (braking) state. By preventing the lever 12d from operating further, it is possible to prohibit the brake unit 12 from being released again.

図６は、本実施形態の作業台車１が牽引車３によって図上Ａ方向に牽引された際のブレーキ部１２の状態を示している。なお、作業台車１が停止状態にある場合は、図５に示すように、作動レバー１２ｄに前進時当接ローラ１３ａ１と、後退時当接ローラ１３ｃ１とが当接した状態にあって閉じた状態、すなわちレール２に対し直交する状態にあり、制動ロッド１２ｃは縮んだ状態にあり、ブレーキ部１２は制動状態（ブレーキ状態）にある。また、この場合、作業台車１を引いて牽引する場合なので、第２固定部材１４ｆの第２ピン孔１４ｆ２に惰性走行禁止ピン１４ｇが挿入されている。 FIG. 6 shows a state of the brake unit 12 when the work carriage 1 of the present embodiment is pulled in the direction A in the figure by the towing vehicle 3. When the work carriage 1 is in a stopped state, as shown in FIG. 5, the forward contact roller 13a1 and the reverse contact roller 13c1 are in contact with the operating lever 12d and closed. That is, it is in a state orthogonal to the rail 2, the brake rod 12c is in a contracted state, and the brake unit 12 is in a brake state (brake state). In this case, since the work carriage 1 is pulled and pulled, the inertia traveling prohibition pin 14g is inserted into the second pin hole 14f2 of the second fixing member 14f.

そして、作業台車１が牽引車３によって図上Ａ方向に牽引されると、図６に示すように、牽引車連結部１４ｂや連結スライドシャフト１４ｂ２，１４ｃ，１４ｄ、リンク連結部１４ａ１が、第１固定部材１４ｅに対し前方（図上、Ａ方向）にスライドして、リンク連結部１４ａ１に連結されたリンク部材１３の基端部１３ｄも前方（図上、Ａ方向）にスライドして、リンク部材１３が第１中間部１３ｂの回転軸１３ｂ１を中心に回転して時計回りに回転する。すると、第２中間部１３ｃの後退時当接ローラ１３ｃ１も時計回りに回転して前方（図上、Ａ方向）に移動する一方、先端部１３ａの前進時当接ローラ１３ａ１も時計回りに回転して後方（図上、Ｂ方向）に移動して、前進時当接ローラ１３ａ１が作動レバー１２ｄを後方（図上、Ｂ方向）に押してブレーキ部１２を制動状態から解除状態に切り替える。これにより、牽引車３が作業台車１を図上Ａ方向に牽引する際、自動的にブレーキ部１２のブレーキを解除できる。 When the work carriage 1 is pulled in the direction A in the drawing by the towing vehicle 3, as shown in FIG. 6, the towing vehicle connecting portion 14b, the connecting slide shafts 14b2, 14c, 14d, and the link connecting portion 14a1 are The base end portion 13d of the link member 13 that slides forward (A direction in the figure) with respect to the fixing member 14e, and also slides forward (A direction in the figure) to the link member 13a. 13 rotates around the rotation shaft 13b1 of the first intermediate portion 13b and rotates clockwise. Then, the reverse contact roller 13c1 of the second intermediate portion 13c also rotates clockwise and moves forward (A direction in the figure), while the forward contact roller 13a1 of the tip portion 13a also rotates clockwise. The forward contact roller 13a1 pushes the operating lever 12d backward (B direction in the figure) to switch the brake unit 12 from the braking state to the release state. Thereby, when the towing vehicle 3 tows the work carriage 1 in the direction A in the figure, the brake of the brake unit 12 can be automatically released.

図７は、本実施形態の作業台車１を図上Ａ方向に牽引していて停止する際のブレーキ部１２の状態を示している。この場合、牽引車３および連結スライドシャフト１４ｂ２は停止しようとするのに対し、作業台車１および第１固定部材１４ｅは牽引車３に図上Ａ方向に引かれていたときの慣性により走行を続けようとするので、牽引車連結部１４ｂや連結スライドシャフト１４ｂ２，１４ｃ，１４ｄ、リンク連結部１４ａ１が第１固定部材１４ｅに対し相対的に図上Ｂ方向に移動する。すると、連結スライド部１４のリンク連結部１４ａ１に連結されたリンク部材１３の基端部１３ｄも後方（図上、Ｂ方向）にスライドして、リンク部材１３を第１中間部１３ｂの回転軸１３ｂ１を中心に回転して反時計回りに回転させる。これにより、第２中間部１３ｃの後退時当接ローラ１３ｃ１も反時計回りに回転して後方（図上、Ｂ方向）に移動する一方、作動レバー１２ｄを後方（図上、Ｂ方向）に押していたリンク部材１３の先端部１３ａの前進時当接ローラ１３ａ１も反時計回りに回転して前方（図上、Ａ方向）に移動し、作動レバー１２ｄが水平に戻るので、ブレーキ部１２がブレーキをかけることになる。 FIG. 7 shows a state of the brake unit 12 when the work carriage 1 of the present embodiment is pulled in the direction A in the drawing and stopped. In this case, the towing vehicle 3 and the connecting slide shaft 14b2 try to stop, whereas the work carriage 1 and the first fixing member 14e continue to travel due to inertia when pulled by the towing vehicle 3 in the direction A in the figure. As a result, the tow vehicle connecting portion 14b, the connecting slide shafts 14b2, 14c, 14d, and the link connecting portion 14a1 move relative to the first fixing member 14e in the B direction in the figure. Then, the base end portion 13d of the link member 13 connected to the link connecting portion 14a1 of the connecting slide portion 14 also slides backward (B direction in the drawing), and the link member 13 is rotated about the rotation shaft 13b1 of the first intermediate portion 13b. Rotate around and rotate counterclockwise. Thereby, the abutting roller 13c1 of the second intermediate portion 13c also rotates counterclockwise and moves backward (B direction in the figure), while pushing the operating lever 12d backward (B direction in the figure). The advancing contact roller 13a1 of the distal end portion 13a of the link member 13 also rotates counterclockwise and moves forward (A direction in the figure), and the operating lever 12d returns to the horizontal position. It will be over.

しかし、この場合、すなわち作業台車１を引いて牽引する場合、図５および図７に示すように、当該作業台車１が静止していてブレーキ部１２が制動（ブレーキ）状態にあるときに惰性走行禁止ピン１４ｇが前後方向長孔１４ｂ３の牽引車３側の内周縁に当接するように惰性走行禁止ピン１４ｇを第２固定部材１４ｆの第２ピン孔１４ｆ２に挿入しているので、牽引車２が牽引走行時から停止し、その後、作業台車１が慣性走行をしようとしても、惰性走行禁止ピン１４ｇが前後方向長孔１４ｂ３の牽引車３側（図上、Ａ方向側）の内周縁に当り、ブレーキ部１２の作動レバー１２ｄがこれ以上作動せず、ブレーキ部１２が再度、解除状態になることを禁止する。そのため、作業台車１を牽引車２と共に簡単かつ確実に停車させることができる。 However, in this case, that is, when the work carriage 1 is pulled and pulled, as shown in FIGS. 5 and 7, when the work carriage 1 is stationary and the brake unit 12 is in a braking (braking) state, the inertial traveling is performed. Since the inertia running prohibition pin 14g is inserted into the second pin hole 14f2 of the second fixing member 14f so that the prohibition pin 14g contacts the inner peripheral edge of the longitudinal long hole 14b3 on the towing vehicle 3 side, the towing vehicle 2 Stopping from the time of towing travel, and then, even if the work carriage 1 tries to travel inertially, the inertia traveling prohibition pin 14g hits the inner peripheral edge of the longitudinal long hole 14b3 on the towing vehicle 3 side (A direction side in the figure), The actuating lever 12d of the brake unit 12 does not operate any more and the brake unit 12 is prohibited from being released again. Therefore, the work carriage 1 can be easily and reliably stopped together with the towing vehicle 2.

図８は、本実施形態の作業台車１が牽引車３によって図上Ｂ方向に押されバック走行する際のブレーキ部１２の状態を示している。なお、作業台車１が停止状態にある場合は、図５の場合と同様に、作動レバー１２ｄに前進時当接ローラ１３ａ１と、後退時当接ローラ１３ｃ１とが当接した状態にあって閉じた状態、すなわちレール２に対し直交する状態にあり、制動ロッド１２ｃは縮んだ状態にある。しかし、この場合は、作業台車１を前方から押してバック走行させる場合なので、第２固定部材１４ｆの第２ピン孔１４ｆ１に惰性走行禁止ピン１４ｇを挿入する。 FIG. 8 shows a state of the brake unit 12 when the work carriage 1 of the present embodiment travels backward by being pushed in the B direction in the figure by the towing vehicle 3. When the work carriage 1 is in the stopped state, the forward contact roller 13a1 and the backward contact roller 13c1 are in contact with the operating lever 12d and closed as in the case of FIG. In this state, that is, in a state orthogonal to the rail 2, the brake rod 12c is in a contracted state. However, in this case, since the work carriage 1 is pushed from the front to travel backward, the inertia traveling prohibition pin 14g is inserted into the second pin hole 14f1 of the second fixing member 14f.

そして、作業台車１が牽引車３によって前方から図上Ｂ方向に押されバック走行すると、図８に示すように、牽引車連結部１４ｂや連結スライドシャフト１４ｂ２，１４ｃ，１４ｄ、リンク連結部１４ａ１が後方（図上、Ｂ方向）にスライドして、そのリンク連結部１４ａ１に連結されたリンク部材１３の基端部１３ｄも後方（図上、Ｂ方向）にスライドして、リンク部材１３が第１中間部１３ｂの回転軸１３ｂ１を中心に回転して反時計回りに回転する。すると、第２中間部１３ｃの後退時当接ローラ１３ｃ１も反時計回りに回転して後方（図上、Ｂ方向）に移動する一方、先端部１３ａの前進時当接ローラ１３ａ１も反時計回りに回転して前方（図上、Ａ方向）に移動して、後退時当接ローラ１３ｃ１が作動レバー１２ｄを後方（図上、Ｂ方向）に押してブレーキを解除させる。これにより、牽引車３が作業台車１を後方から押して図上Ｂ方向にバック走行する場合でも、自動的にブレーキ部１２のブレーキを解除できる。 Then, when the work carriage 1 is pushed in the B direction in the figure from the front by the towing vehicle 3, as shown in FIG. 8, the towing vehicle connecting portion 14b, the connecting slide shafts 14b2, 14c, 14d, and the link connecting portion 14a1 are The base end portion 13d of the link member 13 that slides rearward (B direction in the figure) and is connected to the link connecting portion 14a1 also slides rearward (B direction in the figure), and the link member 13 is the first. The intermediate portion 13b rotates about the rotation shaft 13b1 and rotates counterclockwise. Then, the reverse contact roller 13c1 of the second intermediate portion 13c also rotates counterclockwise and moves backward (B direction in the figure), while the forward contact roller 13a1 of the tip portion 13a also rotates counterclockwise. Rotating and moving forward (A direction in the figure), the reverse contact roller 13c1 pushes the operating lever 12d backward (B direction in the figure) to release the brake. Thereby, even when the towing vehicle 3 pushes the work carriage 1 from the rear and travels backward in the direction B in the figure, the brake of the brake unit 12 can be automatically released.

図９は、本実施形態の作業台車１を図上Ｂ方向にバック走行していて停止する際のブレーキ部１２の状態を示している。この場合、牽引車３および連結スライドシャフト１４ｂ２は停止しようとするのに対し、作業台車１および第１固定部材１４ｅは牽引車３によって図上Ｂ方向に押されていたときの慣性により走行を続けようとするので、牽引車連結部１４ｂや連結スライドシャフト１４ｂ２，１４ｃ，１４ｄ、リンク連結部１４ａ１は、第１固定部材１４ｅに対し相対的に図上Ａ方向に移動する。すると、連結スライド部１４のリンク連結部１４ａ１に連結されたリンク部材１３の基端部１３ｄも前方（図上、Ａ方向）にスライドして、リンク部材１３を第１中間部１３ｂの回転軸１３ｂ１を中心に回転して時計回りに回転させる。これにより、作動レバー１２ｄを後方（図上、Ｂ方向）に押していたリンク部材１３の第２中間部１３ｃの後退時当接ローラ１３ｃ１も時計回りに回転して前方（図上、Ａ方向）に移動して、ブレーキ部１２が自動的にブレーキをかける。 FIG. 9 shows a state of the brake unit 12 when the work carriage 1 of the present embodiment travels back in the direction B in the figure and stops. In this case, the towing vehicle 3 and the connecting slide shaft 14b2 try to stop, whereas the work carriage 1 and the first fixing member 14e continue to travel due to inertia when the towing vehicle 3 is pushed in the B direction in the figure. As a result, the traction vehicle connecting portion 14b, the connecting slide shafts 14b2, 14c, 14d, and the link connecting portion 14a1 move relative to the first fixing member 14e in the direction A in the figure. Then, the base end portion 13d of the link member 13 connected to the link connecting portion 14a1 of the connecting slide portion 14 also slides forward (A direction in the drawing), and the link member 13 is rotated about the rotation shaft 13b1 of the first intermediate portion 13b. Rotate around and rotate clockwise. As a result, the abutting roller 13c1 of the second intermediate portion 13c of the link member 13 that has pushed the operating lever 12d rearward (B direction in the drawing) also rotates clockwise to move forward (A direction in the drawing). It moves and the brake part 12 applies a brake automatically.

しかし、この場合、すなわち作業台車１を押してバック走行する場合、図８および図９に示すように、第２固定部材１４ｆの第２ピン孔１４ｆ１に惰性走行禁止ピン１４ｇを挿入しているので、牽引車２がバック走行時から停止した際に、作業台車１が慣性走行をしようとすると、図９に示すように惰性走行禁止ピン１４ｇが前後方向長孔１４ｂ３の作業台車１側（図上、Ｂ方向側）の内周縁に当ることになり、ブレーキ部１２の作動レバー１２ｄがこれ以上作動せず、ブレーキ部１２が再度、解除状態になることを禁止する。そのため、惰性走行禁止ピン１４ｇの固定位置を差し替えるだけで、バック走行時に停車する場合でも、作業台車１を牽引車２と共に簡単かつ確実に停車させることができる。 However, in this case, that is, when the work carriage 1 is pushed to travel backward, as shown in FIGS. 8 and 9, the inertia travel prohibition pin 14g is inserted into the second pin hole 14f1 of the second fixing member 14f. When the tow truck 2 stops from the back travel, if the work carriage 1 tries to travel inertially, as shown in FIG. 9, the inertia travel prohibition pin 14g is connected to the work carriage 1 side of the longitudinally long hole 14b3 (in the drawing, B), the operation lever 12d of the brake unit 12 does not operate any more and the brake unit 12 is prohibited from being released again. Therefore, the work carriage 1 can be easily and reliably stopped together with the towing vehicle 2 even when stopping at the time of reverse traveling only by changing the fixed position of the inertia traveling prohibition pin 14g.

従って、本実施の形態の作業台車１によれば、作業台車１に設けたブレーキ部１２と、リンク部材１３と、連結スライド部１４等により、静止時にはレール２上を走行する前側車輪１１２ａ，１１２ｂを制動状態に保持する一方、走行時には制動ロッド１２ｃの引張り動作により前側車輪１１２ａ，１１２ｂをその制動状態から解除状態に切り替えるようにしたので、作業台車１の中央に連結シャフトや中央支持板を設けることなく、またワイヤを使用せずに牽引車によって牽引する場合も、押す場合も簡単な構造により制動状態を解除することができる。 Therefore, according to the work cart 1 of the present embodiment, the front wheels 112a and 112b that run on the rail 2 when stationary by the brake portion 12, the link member 13, the connecting slide portion 14, and the like provided on the work cart 1 are used. Since the front wheels 112a and 112b are switched from the braking state to the released state by the pulling operation of the braking rod 12c during traveling, a connecting shaft and a central support plate are provided in the center of the work carriage 1. Without using a wire, it is possible to release the braking state with a simple structure even when the vehicle is towed by a towing vehicle or pushed.

特に、本実施の形態の作業台車１では、連結スライドシャフト１４ｂ２には、その軸方向、すなわちレール２の方向にブレーキ部１２の引き代、すなわち制動ロッド１２ｃの上死点と下死点との間の長さとほぼ同じ長さの前後方向長孔１４ｂ３が形成されており、作業台車１を引いて牽引する場合は、当該作業台車１が静止していてブレーキ部１２が制動（ブレーキ）状態にあるときに惰性走行禁止ピン１４ｇが前後方向長孔１４ｂ３の牽引車３側の内周縁に当接するように惰性走行禁止ピン１４ｇを第２固定部材１４ｆの第２ピン孔１４ｆ２に挿入する一方（図５〜図７参照。）、当該作業台車１を押してバック走行させる場合は、当該作業台車１が静止していてブレーキ部１２が制動状態にあるときに惰性走行禁止ピン１４ｇが前後方向長孔１４ｂ３の作業台車１側の内周縁に当接するように惰性走行禁止ピン１４ｇを第２固定部材１４ｆの第１ピン孔１４ｆ１に挿入するようにした。そのため、作業台車１を引っ張って牽引する場合も、押してバック走行する場合も、牽引車２が牽引またはバック走行の走行時から停止する際に、作業台車１は慣性走行をしブレーキ部１２が解除状態からブレーキ（制動）状態となった後、再度、解除状態になろうとしても、惰性走行禁止ピン１４ｇが前後方向長孔１４ｂ３の牽引車３側または作業台車１側の内周縁に当接して、ブレーキ部１２が再度、解除状態になることを禁止できる。そのため、第２固定部材１４ｆの第１ピン孔１４ｆ１または第２ピン孔１４ｆ２に対する惰性走行禁止ピン１４ｇの挿入位置を替えるだけで、牽引時でもバック走行時でも停車後の惰性走行によるブレーキ部１２の解除を防止して、作業台車１を牽引車２と共に簡単かつ確実に停車させることができる。 In particular, in the work carriage 1 of the present embodiment, the connecting slide shaft 14b2 has a pulling margin of the brake portion 12 in the axial direction, that is, the direction of the rail 2, that is, the top dead center and the bottom dead center of the brake rod 12c. When the work carriage 1 is pulled and pulled, the work carriage 1 is stationary and the brake unit 12 is in a braking (braking) state. At one time, the inertia travel prohibition pin 14g is inserted into the second pin hole 14f2 of the second fixing member 14f so that the inertia travel prohibition pin 14g contacts the inner peripheral edge of the longitudinally long hole 14b3 on the towing vehicle 3 side (see FIG. 5 to 7), when the work carriage 1 is pushed to travel backward, the inertia travel prohibition pin 14g is in the front-rear direction when the work carriage 1 is stationary and the brake unit 12 is in a braking state. The coasting prohibition pin 14g so as to contact the inner peripheral edge of the work carriage 1 side of the hole 14b3 it was to insert into the first pin hole 14f1 of the second fixing member 14f. Therefore, whether the work cart 1 is pulled tow or pushed to travel backward, when the tow vehicle 2 stops from the time of towing or back travel, the work cart 1 travels inertially and the brake unit 12 is released. Even if the brake (braking) state is changed to the release state again, the coasting prohibiting pin 14g comes into contact with the inner peripheral edge of the longitudinal long hole 14b3 on the towing vehicle 3 side or the work carriage 1 side. The brake unit 12 can be prohibited from being released again. Therefore, only by changing the insertion position of the inertia travel prohibition pin 14g with respect to the first pin hole 14f1 or the second pin hole 14f2 of the second fixing member 14f, the brake portion 12 of the brake portion 12 due to the inertia travel after stopping at the time of towing or back-traveling. The release is prevented, and the work carriage 1 can be easily and reliably stopped together with the towing vehicle 2.

また、本実施の形態の作業台車１では、ブレーキ部１２を作動させるためのリンク部材１３や連結スライド部１４は、部品点数が少なく、ブレーキ部１２の近傍の車軸１１２ｃ周りに取り付ければ良いので、作業台車１の中央に連結シャフトや中央支持板を設ける必要がなくなり、作業台車１の荷台を自由に利用することが可能となる。また、ワイヤも使用しないので、経年変化による調整も不要となる。 Further, in the work carriage 1 of the present embodiment, the link member 13 and the connecting slide part 14 for operating the brake part 12 have a small number of parts and may be attached around the axle 112c in the vicinity of the brake part 12. There is no need to provide a connecting shaft or a central support plate in the center of the work carriage 1, and the loading platform of the work carriage 1 can be freely used. In addition, since no wires are used, adjustment due to aging is not necessary.

また、本実施の形態の作業台車１では、作動レバー１２ｄは、ブレーキ部１２が設けられた車輪１１２ａ側の台車本体１１１の側方フレーム１１１ａに基端部１２ｄ１が回転軸１２ｄ１１により回転可能に取り付けられる一方、連結スライドシャフト１４ｂ２は、ブレーキ部１２が設けられた台車本体１１１の前側フレーム１１１ｃに取り付けられ、リンク部材１３は、連結スライドシャフト１４ｂ２が設けられた前側フレーム１１１ｃと、側方フレーム１１１ａにおける作動レバー１２ｄが取り付けられた箇所との間で、両側方フレーム１１１ａ，１１ｂ間に渡された中間フレーム１１１ｅに回転軸１３ｂ１を介し回転可能に取り付けたため、ブレーキ部１２や作動レバー１２ｄ、リンク部材１３および連結スライドシャフト１４ｂ２をコンパクトに配置することが可能となり、メンテナンス性が向上すると共に、作業台車１に搭載する荷物の配置等に影響を及ぼすことがなくなり、使い勝手が向上する。 Further, in the work cart 1 of the present embodiment, the operation lever 12d is attached to the side frame 111a of the cart body 111 on the side of the wheel 112a provided with the brake portion 12 so that the base end portion 12d1 can be rotated by the rotating shaft 12d11. On the other hand, the connecting slide shaft 14b2 is attached to the front frame 111c of the carriage main body 111 provided with the brake portion 12, and the link member 13 is connected to the front frame 111c provided with the connecting slide shaft 14b2 and the side frame 111a. Since it is rotatably attached to the intermediate frame 111e passed between the both side frames 111a and 11b via the rotary shaft 13b1 between the place where the actuating lever 12d is attached, the brake part 12, the actuating lever 12d, and the link member 13 are attached. And the connecting slide shaft 14b2 It becomes possible to arrange the Pact, along with the maintenance is improved, there is no effect on the arrangement of the luggage to be mounted on the work trolley 1, thereby improving the usability.

また、本実施の形態の作業台車１では、リンク部材１３における第１中間部１３ｂの回転軸１３ｂ１から前進時当接ローラ１３ａ１までの長さを、第１中間部１３ｂの回転軸１３ｂ１から後退時当接ローラ１３ｃ１までの長さより短くしたため、前進走行時に前進時当接ローラ１３ａ１が作動レバー１２ｄを後方に押してブレーキ部１２を制動状態から解除状態に切り替えるときの連結スライドシャフト１４ｂ２の前方スライド量と、バック走行時に後進時当接ローラ１３ｃ１が作動レバー１２ｄを後方に押してブレーキ部１２を制動状態から解除状態に切り替えるときの連結スライドシャフト１４ｂ２の後方スライド量とを同一値に近付けることが可能になり、前進走行時およびバック走行時のブレーキ部１２の制動および解除動作の違和感を少なくすることができる。 Further, in the work cart 1 of the present embodiment, the length from the rotation shaft 13b1 of the first intermediate portion 13b of the link member 13 to the abutting roller 13a1 at the time of advancement is set backward from the rotation shaft 13b1 of the first intermediate portion 13b. Since the length of the contact roller 13c1 is shorter than the length until the contact roller 13c1, the forward slide amount of the connecting slide shaft 14b2 when the forward contact roller 13a1 pushes the operating lever 12d backward to switch the brake unit 12 from the braking state to the released state during forward traveling. When the vehicle is traveling in reverse, the reverse contact roller 13c1 pushes the operating lever 12d backward, and the rear slide amount of the connecting slide shaft 14b2 when the brake unit 12 is switched from the braking state to the released state can be brought close to the same value. Discomfort in braking and releasing operation of the brake unit 12 during forward traveling and reverse traveling It can be reduced.

なお、上記実施形態の説明では、静止時にはレール２上を走行する前側車輪１１２ａ，１１２ｂを制動状態に保持し、走行時には制動ロッド１２ｃの引張り動作によりその制動状態から解除状態に切り替えるブレーキ部１２を設けた作業台車１により説明したが、本発明では、これに限らず、例えば、走行時には制動ロッド１２ｃその引張動作とは反対方向の押入動作によりその制動状態から解除状態に切り替えるブレーキ部１２でも、本発明の技術的思想の範囲内で設計変更して適用可能である。 In the description of the above embodiment, the front wheel 112a, 112b traveling on the rail 2 is held in a braking state when stationary, and the brake unit 12 that switches from the braking state to the released state by a pulling operation of the braking rod 12c when traveling. Although the working cart 1 provided is described above, the present invention is not limited to this. For example, the brake rod 12c that switches from the braking state to the released state by the pushing operation in the direction opposite to the tensioning operation of the braking rod 12c during traveling, The present invention can be applied with a design change within the scope of the technical idea of the present invention.

１作業台車
２レール
３牽引車
１１台車本体
１２ブレーキ部
１２ａディスクホイール
１２ｂブレーキ本体
１２ｃ制動ロッド
１２ｄ作動レバー
１３リンク部材
１３ａ先端部
１３ａ１前進時当接ローラ（前進時当接部）
１３ｂ第１中間部
１３ｂ１回転軸
１３ｃ第２中間部
１３ｃ１後退時当接ローラ（後退時当接部）
１３ｄ基端部
１４連結スライド部
１４ａ１リンク連結部
１４ａ２横方向長孔
１４ｂ牽引車連結部
１４ｂ２，１４ｃ，１４ｄ連結スライドシャフト
１４ｂ３前後方向長孔
１４ｅ第１固定部材
１４ｆ第２固定部材
１４ｆ１第１ピン孔
１４ｆ２第２ピン孔
１４ｇ惰性走行禁止ピン DESCRIPTION OF SYMBOLS 1 Work trolley 2 Rail 3 Towing vehicle 11 Bogie main body 12 Brake part 12a Disc wheel 12b Brake main body 12c Brake rod 12d Actuation lever 13 Link member 13a Tip part 13a1 Advance contact roller (advance contact part)
13b First intermediate portion 13b1 Rotating shaft 13c Second intermediate portion 13c1 Retraction contact roller (retraction contact portion)
13d Base end part 14 Connection slide part 14a1 Link connection part 14a2 Lateral long hole 14b Tractor connection part 14b2, 14c, 14d Connection slide shaft 14b3 Longitudinal direction long hole 14e First fixing member 14f Second fixing member 14f1 First pin hole 14f2 2nd pin hole 14g

Claims

A work cart provided with a brake portion that keeps the wheels traveling on the rails in a braking state when stationary and switches from the braking state to the released state by a pulling operation of the braking rod when traveling,
An operation lever in which one end of a brake rod for controlling a braking state and a release state of the brake part is connected to an intermediate part by an advancing and retreating operation, while a base end part is rotatably attached to the work carriage.
A connecting slide shaft that is slidably attached to the working carriage in either of the front and rear directions via a fixing member, and that is provided with a towing vehicle connecting portion for connecting to the towing vehicle at the tip portion;
A first intermediate portion other than both ends is rotatably attached to the work carriage via a rotation shaft, and a rear end portion of the connection slide shaft is connected to a base end portion thereof by a connection pin, while When the connecting slide shaft is pulled forward and slides, a forward contact portion is provided that rotates and contacts the operating lever of the brake portion to release the braking, and between the first intermediate portion and the base end portion a link member, wherein the connecting slide shaft to the second intermediate portion is provided with the abutment portion when retracted to release the contact with the brake rotating when the slide is pushed backwards actuation lever of the brake part between the Have
The sliding amount of the connecting slide shaft when the forward contact portion during forward traveling contacts the operating lever and the brake portion is switched from the braking state to the release state, and the reverse contact portion during reverse movement When the forward movement from the rotary shaft of the first intermediate portion of the link member approaches the same value as the sliding amount of the connecting slide shaft when the brake portion is brought into contact with the operating lever and the brake portion is switched from the braking state to the released state. A working carriage characterized in that a length to the contact portion and a length from the rotation shaft of the first intermediate portion to the contact portion at the time of retraction are set .

In the work trolley | bogie of Claim 1,
The connecting slide shaft is formed with a longitudinal hole having a length substantially the same as the pulling length of the brake portion in the axial direction thereof,
When pulling and pulling the work carriage, when the work carriage is stationary and the brake part is in a braking state, the pin hole of the fixing member is used in the vicinity of the inner peripheral edge of the front and rear direction long hole on the tow truck side. When the inertia traveling prohibition pin is fixed and the work cart is pushed back to travel, the longitudinal elongated hole is inserted through the pin hole of the fixing member when the work cart is stationary and the brake portion is in a braking state. A work carriage characterized in that a coasting prohibiting pin is fixed in the vicinity of the inner peripheral edge of the work carriage.

In the work trolley | bogie of Claim 1 or Claim 2,
The actuating lever has a base end portion rotatably attached to a side frame of the working carriage on the wheel side provided with a brake portion,
The connecting slide shaft is attached to a front frame or a rear frame of the work carriage provided with a brake part,
The link member rotates between the front frame or the rear frame provided with the connecting slide shaft and the intermediate frame passed between the both side frames between the side frame where the operating lever is attached. A work cart characterized in that it is rotatably mounted via a shaft.