WO2019168046A1

WO2019168046A1 - Alerting unit

Info

Publication number: WO2019168046A1
Application number: PCT/JP2019/007627
Authority: WO
Inventors: 花原　晃
Original assignee: 住友重機械建機クレーン株式会社
Priority date: 2018-03-01
Filing date: 2019-02-27
Publication date: 2019-09-06
Also published as: JP2019151438A; JP6987671B2

Abstract

The present invention provides a technology for alerting an operator, who is operating a construction machine such as a crane, that an engine is not to be started. This alerting unit comprises: a cover member for covering a first keyhole to be inserted with a key for starting a construction machine and/or a second keyhole of an opening/closing member provided before reaching the first keyhole from the outside of the construction machine; and an alerting member disposed near the cover member.

Description

Alert unit

The present invention relates to a technique for indicating that an engine of a construction machine should not be started.

In a construction site or the like, it is necessary to indicate to an operator of the construction machine, for example, that the engine of a construction machine such as a crawler crane should not be started depending on the situation.

Also, the following documents are disclosed regarding engine start of construction machinery.

JP 2017-154844 A

Conventionally, for example, in order to suppress the start of the engine by an operator, it is necessary to call attention by suspending a warning label or the like at a predetermined place. However, there may be a case where the operator is unaware of the warning display tag. In this case, for example, the operator may start an engine such as a crane.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique for notifying an operator who operates a construction machine such as a crane that the engine should not be started.

In order to solve the above-described problem, a representative alerting unit according to the present invention includes a first keyhole that is a keyhole into which a key for starting a construction machine is inserted, or the first keyhole from the outside of the construction machine. A closing member that closes at least one of the second keyholes that are keyholes of the opening and closing member that is provided until approaching, and a warning member that is disposed in the vicinity of the closing member.
With this configuration, the operator can be made aware that the engine must not be started.
Further, in the attention calling unit described above, the closing member has a shape that can be inserted into at least one of the first key hole or the second key hole, and is inserted into the first key hole or the second key hole. However, the construction machine cannot be started, or the opening / closing member cannot be unlocked.
With this configuration, even if an operator accidentally turns the closing member in a state where the closing member is inserted into the keyhole, the construction machine is prevented from starting due to the erroneous operation, and the opening / closing member is prevented from being opened. can do.
In the alerting unit described above, the closing member includes a shape in which a key ring is different from a shape of a regular key that can start the construction machine or unlock the opening and closing member. It is characterized by.
Creating a closing member having a key mountain shape different from that of a regular key can be easily performed, for example, in the same manner as creating a spare for a regular key. Further, the closing member can be created at a low cost.
Moreover, in the alerting unit described above, the alerting member has a color different from a background color in a state where the closing member is inserted into the first keyhole or the second keyhole. Features.
With this configuration, the attention-calling member can be made conspicuous, and the operator can easily notice.
In the alerting unit described above, the closing member and the alerting member are connected and integrated.
By this structure, it can suppress that the said obstruction | occlusion member and the said alerting member become a different body, and will be in another position.
In the alerting unit described above, the closing member is heavier than half of the weight of the alerting member.
With this configuration, it is possible to reduce the drop of the alerting unit due to the weight of the alerting member.

According to the present invention, for example, the operator can be made aware that the engine must not be started.

It is an external appearance side view of a crane. It is an external appearance top view of a crane. It is a figure which shows an example of the alerting unit of embodiment. It is a schematic diagram for demonstrating the difference between a regular key and the key processed in the embodiment. It is a figure which shows the condition where the alerting unit of embodiment is inserted in the keyhole of an ignition key cylinder. It is a figure which shows the condition where the alerting unit of embodiment is inserted in the keyhole of the opening / closing door of a driver's cab. It is a figure which shows the condition where the display tag for the conventional alerting is hung on the cigar plug in a driver's cab.

Hereinafter, aspects of the present embodiment will be described with reference to the drawings. In the present embodiment, a crawler crane (hereinafter referred to as a crane) is illustrated, but not limited to this, any construction machine or work machine may be used.

1 is an external side view of the crane, and FIG. 2 is an external top view. Below, the up and down, front and rear, and left and right directions of the crane are defined based on the postures of FIGS. 1 and 2.

As shown in FIG. 1, the crane 100 includes a traveling body 101 to which an endless track crawler is attached, a revolving body 103 that is turnable on an upper portion of the traveling body 101 via a swirling wheel, and a revolving body 103. On the other hand, it has a boom 104 pivotally supported so as to be pivotable up and down. As shown in FIGS. 1 and 2, a cab 107 is provided at the right front portion of the swing body 103, and a counterweight 109 is attached to the rear portion of the swing body 103.

A hoisting drum 105 that is a winch drum for raising and lowering the hook 108 and a hoisting drum 106 that is a winch drum for raising and lowering the boom 104 are mounted on the frame of the revolving structure 103. A hoisting rope 105a is wound around the hoisting drum 105, and the hoisting rope 105a is wound or fed out by the rotation of the hoisting drum 105, and the hook 108 is moved up and down. A hoisting rope 106 a is wound around the hoisting drum 106, and the hoisting rope 106 a is wound or fed out by driving of the hoisting drum 106, and the boom 104 is raised and lowered.

Various devices such as an engine that is a power source, a hydraulic pump, a hydraulic valve device, a radiator, an exhaust gas purification device, and the like are mounted on the left rear portion of the revolving structure 103. These devices are provided with a soundproof building cover 120 ( In FIG. 2, it is covered by a broken line frame. In addition, these various devices are often installed at positions far from the cab 107 so as not to give the operator the influence of noise and heat generation. Therefore, even if a maintenance person enters the building cover 120 and performs inspection / maintenance, it is difficult to see from the outside and is difficult to see from the cab 107.

Here, FIG. 7 shows an example of a conventional display tag that indicates that inspection / maintenance work is in progress, that is, that the engine must not be started. FIG. 7 illustrates a part of the inside of the cab 107, and shows a situation in which the display tag 51 for alerting is suspended from the cigar plug 73 of the indoor console section 70.

In the example of FIG. 7, the mechanic suspends the display tag 51 through the hanging string 52 to the cigar plug 73 inserted in the cigar socket 72 before performing the inspection / maintenance work, and then performs the inspection / maintenance work. When the inspection / maintenance work is completed, the mechanic removes the display tag 51 and collects it. The display tag 51 is provided with characters 55 such as “inspection / maintenance”, for example, in order to urge the operator to call attention.

In the example of FIG. 7, the display tag 51 is located at a location where the operator can confirm that he / she is seated on the seat of the cab 107. However, when the operator is not seated, such as when the operator is standing, the position is difficult for the operator to notice because of the height and angle. Therefore, the operator is not aware of the display tag 51, and is more likely to insert the key into the key hole of the ignition key cylinder 71 and start the engine without sitting on the seat.

FIG. 3 shows a configuration example of the alerting unit of the present embodiment for this conventional example. The alerting unit 10 is configured such that the insertion member 21 and the alerting member 11 are connected by a string-like member 12 and integrated. The insertion member 21 is a key-like member that can be inserted into a key hole (first key hole) into which a key for starting the crane 100 is inserted.

The attention calling member 11 is a plate material having a diameter of about 10 to 11 cm. The alert member 11 is made of plastic, for example, and the surface layer is laminated. The alert member 11 is designed to be lighter than the insertion member 21. Moreover, the alerting member 11 is provided with a hole 14 reinforced by a bearing (eyelet).

In the alert member 11, a message 11a for prompting alert, and a column 11b for writing characters that can identify the maintainer or the organization to which the maintainer belongs, such as the name, department, and company name of the maintainer Is provided. The message 11a and the column 11b are provided on both sides of the alerting member 11. In the present embodiment, the message 11a is written in Japanese as “Do not touch and inspect!”, But may be written together with a language other than Japanese. Moreover, you may attach | subject the mark (for example, exclamation mark) for encouraging attention with the message 11a. Moreover, the wording written in the message 11a should just make it aware that the engine must not be started.

The string-like member 12 is a wire wire having a length of about 12 to 13 cm and a diameter of about 2 mm. Since steel wires such as wire wires are used, they cannot be easily cut.

By passing the hole 14 of the alert member 11 and the ring 16 of the insert member 21 through the string member 12 and binding and fixing the string member 12 with the crimping fitting 13, the alert member 11 and the insert member 21 are connected. And become one. Further, the crimping fitting 13 is fixed by crimping the vicinity of the central portion of the string-like member 12 so that the alerting member 11 is always located near the insertion member 21.

Here, the shape of the insertion member 21 will be described with reference to FIG. FIG. 4A is a schematic diagram illustrating an example of a regular key capable of starting the engine, and FIG. 4B is a schematic diagram of the insertion member 21 of the present embodiment. 4B, the insertion member 21 shown in FIG. 4B includes a shape imitating the regular key 201, and the key groove 21a of the insertion member 21 matches the shape of the key groove 201a of the regular key 201. It is formed as follows. Note that the keyway 21a of the insertion member 21 and the keyway 201a of the regular key 201 do not need to be completely matched, but may be matched to the extent that they can be inserted without stress. On the other hand, the side surface (key pile) 21 b of the insertion member 21 has a different shape from the side surface 201 b of the regular key 201. By having such a keyway 21a and side surface 21b, the insertion member 21 can only be inserted into a keyhole for starting the engine, and cannot be rotated after the insertion to start the engine. Yes. The insertion member 21 having such a shape can be produced at low cost because it can be produced by preparing a spare regular key and polishing it to eliminate part or all of the key pile. It should be noted that, in addition to eliminating the key mountain, as long as the key mountain has a different shape, the engine cannot be started and the engine cannot be started. Therefore, the shape of the insertion member 21 should just have the shape from which the shape of a key ring differs with respect to a regular key. Even in such a case, it can be created by preparing a spare for the regular key and polishing the spare key, and the insertion member 21 can be created easily and at low cost. In addition, a member at the stage before formation of the key ring is prepared in the same manner as creating the spare key, and the insertion member 21 is polished by polishing the member so that the shape of the key ring is different from that of the regular key. You may create it.

FIG. 5 is a view showing a state in which the insertion member 21 of the alerting unit 10 is inserted into the keyhole of the ignition key cylinder 71 in the cab 107. As shown in FIG. 5, it is possible to close the insertion member 21 by inserting it into the key hole of the ignition key cylinder 71, but the shape of the side surface 21 b of the insertion member 21 is different from the side shape of the regular key 201 as described above. Therefore, it cannot rotate and start the engine. In addition, since the insertion member 21 is heavier than the alerting member 11 as described above, the insertion member 21 can be prevented from falling out of the ignition key cylinder 71 without being able to withstand the weight of the alerting member 11. Here, the insertion member 21 is heavier than the attention-calling member 11, but at least the weight of the insertion member 21 may be at least half the weight of the attention-calling member 11. That is, if the frictional force generated between the insertion member 21 and the keyhole is greater than the tension due to the weight of the attention-calling member 11 and the insertion member 21 does not fall naturally out of the keyhole, the attention-calling member 11 is better. It may be heavier than the insertion member 21.

In this way, the keyhole of the ignition key cylinder 71 is blocked by the insertion member 21, so that the insertion of the regular key 201 by the operator can be prevented. Further, since the alerting member 11 is located in the vicinity of the keyhole, the operator can notice that the engine must not be started. In addition, even if the operator mistakenly performs an engine start operation using the insertion member 21 when the insertion member 21 is inserted, the engine does not rotate as described above, and the engine is not started.

FIG. 6 is a view showing a state in which the insertion member 21 of the alerting unit 10 is inserted into the locking key hole 118 (second key hole) of the opening / closing door 117 of the cab 107. The opening / closing door 117 is an opening / closing member provided from the outside of the crane 100 until it approaches the key hole of the ignition key cylinder 71 in the cab 107. The insertion member 21 shown in FIG. 6 also has a shape imitating a regular key for locking and unlocking the opening / closing door 117. That is, in order to enable insertion into the locking key hole 118, the keyway of the insertion member 21 is formed to coincide with the keyway of the regular key, and in order to prevent the unlocking operation from being performed, the insertion member 21 The keystone has a different shape from that of regular keys.

Also in the mode shown in FIG. 6, before entering the operator cab 107, the operator can easily find the alerting member 11 and notice that the engine must not be started. If the shape of the locking key hole 118 and the key hole shape of the ignition key cylinder 71 are the same, the insertion member 21 can be inserted into both key holes by making the shape of the insertion member 21 insertable into both key holes. The member 21 can be inserted. Further, in the case where the shape of the locking key hole 118 and the key hole shape of the ignition key cylinder 71 are different, the shape of the insertion member 21 may be matched to either one.

The interior of the cab 107 is generally black or gray, and the color of the exterior body of the crane 100 is generally yellow, orange, or light green. Thus, the background color in a state where the insertion member 21 is inserted into the keyhole is often black, gray, yellow, orange, or light green. Therefore, in this embodiment, the color of the message 11a described on the alerting member 11 is set to a color different from black, gray, yellow, orange, and light green, and for example, red that can be noticed by the operator. Moreover, the color (for example, white) for raising the red message 11a is employ | adopted for the foundation | substrate of the alerting member 11. FIG.

<Notes> The message and mark written on the front and back surfaces of the alert member 11 may be different from each other. Further, the color of the message and the background color may be different between the front surface and the back surface. For example, the surface facing outward may be switched with the front surface used for inserting an opening / closing door and the back surface used for inserting an ignition key cylinder.

In this embodiment, different colors are used for the background color, the background of the alerting member 11, and the message 11a, but they may not be all different colors. That is, for example, the background color and the message 11a may be the same color and only the background color of the alerting member 11 may be different, or the background color and the background color of the alerting member 11 may be the same color and only the color of the message 11a may be different. It may be allowed.

Although the alerting unit 10 of this embodiment has the structure which the insertion member 21 and the alerting member 11 connected with the string-like member 12, and it became the integral structure, even if it does not connect with the string-like member 12, You may connect via other members, such as a rod-shaped member and a plate-shaped member. Moreover, the shape in which the insertion member 21 and the alerting member 11 are directly integrated may be sufficient. That is, for example, an operator who is trying to insert / remove the insertion member may be integrated so as to be aware of the alerting member.

The insertion member 21 of the present embodiment has a shape simulating at least one of a regular key inserted into the key hole of the ignition key cylinder 71 or a regular key inserted into the key hole of the opening / closing door 117. Any member that closes these key holes may be used. For example, a lid member that covers the keyhole from above may be used. The insertion member and the lid member in the present embodiment are examples of a closing member that closes the keyhole, and are not limited thereto.

In the present embodiment, as an example of a situation where the engine must not be started, a situation where an inspection and maintenance is performed by a person other than the operator is exemplified, but various other situations are conceivable.

As described in detail above, according to this embodiment, it is possible to realize that the engine must not be started.

DESCRIPTION OF SYMBOLS 10: Alerting unit 11: Alerting member 11a: Message 11b: Column 12: String member 13: Crimp metal fitting 21: Insertion member 21a: Keyway 21b: Side surface 100: Crane 107: Operator's cab 117: Open / close door

Claims

At least a first keyhole, which is a keyhole into which a key for starting a construction machine is inserted, or a second keyhole, which is a keyhole of an opening / closing member provided between the outside of the construction machine and approaching the first keyhole A blocking member that closes one side;
An alerting member disposed in the vicinity of the closure member;
A reminder unit with.
In the alert unit according to claim 1,
The closing member has a shape that can be inserted into at least one of the first key hole or the second key hole, and the construction machine can be started even when inserted into the first key hole or the second key hole. A warning unit having a shape that cannot be opened or unlocked.
In the alerting unit according to claim 1 or 2,
The alerting unit, wherein the closing member includes a shape in which a key ring is made different from a shape of a regular key that can start the construction machine or unlock the opening and closing member.
In the alerting unit according to any one of claims 1 to 3,
The attention calling unit, wherein the attention calling member has a color different from a background color in a state where the closing member is inserted into the first keyhole or the second keyhole.
In the alerting unit according to any one of claims 1 to 4,
The closing member and the alerting member are connected and integrated with each other.
In the alerting unit according to any one of claims 1 to 5,
The alerting unit, wherein the closing member is heavier than half of the weight of the alerting member.