JP5336743B2 - Connecting device - Google Patents

Description

  The present invention relates to a connecting device, and more particularly to a connecting device that connects two transport vehicles and pulls and pushes one transport vehicle with the other transport vehicle.

  In recent years, automation for the purpose of reducing labor costs has been strongly demanded at production sites. Therefore, for example, a package (material, product, etc.) is transported using a transport vehicle such as the automatic guided vehicle disclosed in Patent Document 1.

By the way, since luggage handled in the fields related to steel and shipbuilding is often relatively heavy, large transport vehicles are used particularly in such fields. However, for example, when a transport vehicle fails and cannot travel, it is impossible to manually move a large transport vehicle. Therefore, in such a case, a measure is taken to move the failed transport vehicle using a wire rope or the like by a normal (runnable) transport vehicle.
JP 2000-318606 A

  However, as described above, when a failed transport vehicle is moved by a normal transport vehicle using a wire rope or the like, the failed transport vehicle can be pulled, but cannot be pushed in. there were. For this reason, it has been difficult to move a failed transport vehicle to a desired location or to stop at a fixed position.

  The present invention has been made in order to solve the above-described problems, and is a coupling device that connects two transport vehicles and pulls and pushes one transport vehicle with the other transport vehicle. It is intended to provide.

In order to achieve this object, the connecting device according to claim 1 connects two transport vehicles having a driver's seat in front , and a pair of attachments that are detachably attached to the two transport vehicles. A member, a connecting member configured to connect the pair of mounting members and made of a rigid material, a pair of shaft members that respectively pivotally support the connecting member on the pair of mounting members, and an upper surface of the transport vehicle. and a fixing member that, said pair of shaft members, said mount member is disposed toward the axis in the vertical direction of the transport vehicle in a state attached to the transport vehicle, said mounting member, said conveying A plate-like fixed portion formed in a substantially rectangular shape in a top view of the vehicle is provided, and the fixing member is formed by recessing a part of the upper surface of the fixing member in a downward direction of the transport vehicle. Member can be locked It includes a locking portion which, the locking portion is a flat surface shaped engaging bottom having a substantially rectangular shape corresponding to the fixed portion in a top view in the transport vehicle located below the upper surface of the fixing member And a locking wall surface provided perpendicularly to the locking bottom surface and the top surface of the fixing member, and side end surfaces located on the left and right sides and the center side of the fixed vehicle of the fixed portion are By being locked to the locking wall surface, the displacement of the mounting member in the left-right direction relative to the transport vehicle and the displacement in the direction opposite to the side to which the connecting member is connected are restricted.

  The connection device according to claim 2 is the connection device according to claim 1, wherein the attachment member supports the shaft member and is opposed to the conveyance vehicle in a vertical direction in a state of being attached to the conveyance vehicle. The connecting member includes a shaft support portion in which a through hole through which the shaft member is inserted is formed, and the shaft support portion is inserted between the pair of support portions facing each other. The shaft member inserted through the hole is pivotally supported by the mounting member, and the shaft support portion is configured such that the vertical dimension of the transport vehicle is smaller than the facing interval between the pair of support portions.

  According to a third aspect of the present invention, in the coupling device according to the second aspect, the inner surface of the through hole is formed in a curved surface that is convex toward the inner side of the through hole.

  A connection device according to a fourth aspect is the connection device according to any one of the first to third aspects, wherein the connection member is formed in a cylindrical body.

  According to a fifth aspect of the present invention, there is provided the coupling device according to any one of the first to fourth aspects, further comprising a regulating member that regulates rotation of the coupling member around the shaft member within a predetermined angle range. Yes.

  6. The connecting device according to claim 6, wherein the connecting device according to any one of claims 1 to 5 detects whether a rotation angle of the connecting member around the shaft member is a predetermined angle. It has.

According to the connecting device of the first aspect, the pair of mounting members that are detachably mounted on the two transport vehicles having the driver's seat in the front, respectively, and the pair of mounting members are connected and are made of a rigid material. Since the connecting member is provided, two transport vehicles can be connected through the connecting member. Further, since the connecting member is made of a rigid material, there is an effect that one of the two connected transport vehicles can be pulled and pushed by the other transport vehicle.

  As a result, for example, even when a transport vehicle breaks down and cannot travel, the failed transport vehicle is connected to a normal (travelable) transport vehicle, and the failed transport vehicle is pulled or pushed by a normal transport vehicle. As a result, the failed transport vehicle can be easily moved to a desired location and can be stopped at a fixed position with high accuracy.

  Further, according to the connecting device of the present invention, the attachment member is detachably attached to the transport vehicle. Therefore, when the connecting device is unnecessary, the connecting device can be detached from the transport vehicle, thereby improving convenience. There is an effect that can be.

  Furthermore, according to the coupling device of the present invention, the coupling device includes a pair of shaft members that pivotally support the coupling member on the mounting member, and the pair of shaft members transports the shaft center in a state where the mounting member is mounted on the transportation vehicle. Therefore, the connecting member can be rotated in the left-right direction (width direction) of the transport vehicle around the shaft member.

As a result, when the transport vehicle turns, the connecting member rotates in the left-right direction about the shaft member, so that the two connected transport vehicles can turn. There is.
In addition, a fixing member is provided that is fixed to the upper surface of the transport vehicle and the locking portion is recessed in the downward direction of the transport vehicle, and the locking portion is located below the upper surface of the fixing member and is disposed on the transport vehicle. A flat bottom locking bottom surface having a shape corresponding to the fixed portion in top view, and a locking wall surface provided perpendicularly to the locking bottom surface and the top surface of the fixing member. The lateral displacement of the mounting member with respect to the transport vehicle and the connecting member are screwed to the fixing member in a state where the side end surfaces located on the left and right sides and the center side of the transport vehicle are locked to the locking wall surface. Since the displacement in the direction opposite to the side to which the motor is connected is regulated, the mounting work of the mounting member to the transport vehicle can be simplified and the mounting strength of the mounting member to the transport vehicle can be secured. is there.

  According to the coupling device of the second aspect, in addition to the effect produced by the coupling device according to the first aspect, the attachment member supports the shaft member and is attached to the conveyance vehicle in the vertical direction (height). The connecting member includes a shaft support portion in which a through hole through which the shaft member is inserted is provided, and the shaft support portion is interposed between the facing portions of the pair of support portions. In this state, the shaft member inserted into the through hole is pivotally supported by the mounting member, and the shaft support portion is configured such that the size in the vertical direction of the transport vehicle is smaller than the facing distance between the pair of support portions. A gap is provided between the pair of support portions, and the connecting member can be moved in the vertical direction of the transport vehicle by the gap.

  As a result, even when the height of the travel path on which one transport vehicle travels is different from the height of the travel path on which the other transport vehicle travels (for example, uneven roads, slopes, etc.), the connecting member moves in the vertical direction of the transport vehicle. By moving, there is an effect that two transport vehicles can be connected without being affected by the travel path.

  According to the connecting device of the third aspect, in addition to the effect produced by the connecting device of the second aspect, the inner surface of the through hole is formed in a curved surface that is convex toward the inner side of the through hole. The member can be swingable with respect to the mounting member.

  As a result, even when the height of the travel path on which one transport vehicle travels is different from the height of the travel path on which the other transport vehicle travels (for example, uneven roads, slopes, etc.), the connecting member swings relative to the mounting member. By moving, there is an effect that two transport vehicles can be connected without being affected by the travel path. Further, since the connecting member swings with respect to the mounting member, there is an effect that the shaft member can be prevented from being twisted with respect to the through hole.

  According to the connecting device of the fourth aspect, in addition to the effect produced by the connecting device according to any one of the first to third aspects, since the connecting member is formed in the cylindrical body, stress concentration is unlikely to occur. The strength of the connecting member against the pressing can be ensured. Thereby, there is an effect that durability can be improved.

  Further, since the connecting member is configured as a cylindrical body, there is an effect that the connecting member can be reduced in weight as compared with a case where the connecting member is configured as a solid columnar body.

  According to the coupling device of the fifth aspect, in addition to the effect produced by the coupling device according to any one of the first to fourth aspects, the regulation for regulating the rotation of the coupling member around the shaft member within a predetermined angle range. Since the member is provided, it is possible to prevent the jackknife phenomenon that may occur when two transport vehicles C1 and C2 are connected by the connecting device 1 and one transport vehicle is pushed by the other transport vehicle. There is an effect.

  According to the coupling device of the sixth aspect, in addition to the effect produced by the coupling device according to any one of the first to fifth aspects, it is detected whether the rotation angle of the coupling member around the shaft member is a predetermined angle. Therefore, it is possible to determine whether or not the rotation angle of the connecting member around the shaft member has reached a predetermined angle.

  Thereby, when it is determined that the rotation angle of the connecting member has reached a predetermined angle, for example, by generating a warning sound or stopping the transporting vehicle, the two transporting vehicles C1 and C2 are connected by the connecting device 1. There is an effect that it is possible to prevent the jackknife phenomenon that may occur when connecting and pushing one transport vehicle with the other transport vehicle.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. First, the transport vehicles C1 and C2 will be described with reference to FIG. FIG. 1 is a side view of the transport vehicles C1 and C2. FIG. 1A illustrates only the front of the transport vehicle C1 and the rear of the transport vehicle C2, and FIG. 1B illustrates only the front of the transport vehicles C1 and C2. Moreover, the arrow UD of FIG. 1 has shown the up-down direction (height direction) of the conveyance vehicles C1 and C2.

  In addition, FIG. 1 illustrates a state where two transport vehicles C1 and C2 are connected by the connecting device 1, and (a) illustrates a state where the front of the transport vehicle C1 and the rear of the transport vehicle C2 are connected. (B) has each illustrated the state which connected the front of the conveyance vehicle C1 and the front of the conveyance vehicle C2.

  The transport vehicles C1 and C2 are vehicles for transporting luggage (materials, products, etc.) at a production site, and a derivative (not shown) laid on the travel path G is detected by a sensor (not shown). Thus, it is configured to be able to run unattended along the derivative. The transport vehicles C1 and C2 are not limited to unmanned transport vehicles as in the present embodiment, and may be transport vehicles that require a driver. The conveyance vehicles described in claims 1 and 2 have the same purpose, and are not limited to unmanned or manned.

  The transport vehicles C1 and C2 in the present embodiment are used in fields related to steel and shipbuilding that handle relatively heavy objects, and are larger than those used in other fields (the vehicle weight is smaller). About 167 tons). For this reason, for example, when the transport vehicle C1 fails and cannot travel, it is impossible to manually move the large transport vehicle C1. Therefore, the connecting device 1 is used to connect the two transport vehicles C1 and C2 so that the failed transport vehicle C1 is moved by the normal (runnable) transport vehicle C2.

  Next, with reference to FIG. 2 and FIG. 3, the connecting device 1 in one embodiment of the present invention will be described. FIG. 2A is a side view of the coupling device 1, and FIG. 2B is a top view of the coupling device 1. 3A is a cross-sectional view of the connecting member 3 taken along line IIIa-IIIa in FIG. 2A, and FIG. 3B is a support portion 3a taken along line IIIb-IIIb in FIG. FIG. In FIG. 2A, in order to facilitate understanding of the invention, a part of the transport vehicles C1 and C2 is illustrated by phantom lines, and the two transport vehicles C1 and C2 are connected by the connecting device 1. Is illustrated.

  As described above, the connecting device 1 is a device for connecting the two transport vehicles C1 and C2, and as shown in FIG. 2, the pair of mounting members 2, the connecting member 3, and the pair of shaft members. 4 is mainly provided.

  The attachment member 2 is attached to the transport vehicles C1 and C2 through a fixing member 5 described later, and includes a pair of support portions 2a and 2b as shown in FIG. The support portions 2a and 2b are portions that support the shaft member 4, and as shown in FIG. 2A, the mounting member 2 is attached to the transport vehicles C1 and C2 in the vertical direction (U− In the D direction, see FIG.

  As shown in FIG. 2A, through holes 2a1 and 2b1 are formed in these support portions 2a and 2b, respectively, and the shaft member 4 is inserted through these through holes 2a1 and 2b1. The shaft member 4 inserted through the through holes 2a1 and 2b1 is locked so as not to rotate by a locking member 8 screwed to the support portion 2a.

  Moreover, as shown in FIG. 2, the two control members 6 are arrange | positioned at the support part 2a. The restricting member 6 restricts the rotation of the connecting member 3 around the shaft member 4 within a predetermined angle range, and from the lower surface of the support portion 2a (the lower surface in FIG. 2 (a)) to the support portion 2b. It protrudes toward the side (the lower side in FIG. 2A).

  Note that the two regulating members 6 in the present embodiment have the upper surface of the coupling device 1 from the state shown in FIG. 2 (hereinafter referred to as “basic posture”) when the coupling member 3 rotates around the shaft member 4. As viewed (see FIG. 2 (b)), they are respectively arranged so as to be restricted within an angle range of 40 ° clockwise and counterclockwise.

  Here, with reference to FIG. 4, the effect | action of the control member 6 is demonstrated. 4A and 4B are enlarged top views of the connecting device 1 in which a portion indicated by IV in FIG. 2B is enlarged. FIG. 4A shows a state where the connecting member 3 is in a basic posture, and FIG. (C) shows a state in which the connecting member 3 has been rotated 40 ° counterclockwise from the basic posture in the top view of the connecting device 1. It is shown.

  When the connecting member 3 is rotated 40 ° clockwise around the shaft member 4 in the top view of the connecting device 1 from the basic posture shown in FIG. 4A, the connecting member 3 (the shaft is connected) as shown in FIG. The support 3a) interferes with the restricting member 6, and the clockwise rotation of the connecting member 3 is restricted.

  On the other hand, when the connecting member 3 rotates 40 ° counterclockwise around the shaft member 4 in the top view of the connecting device 1 from the basic posture shown in FIG. 4A, as shown in FIG. 3 (the shaft support portion 3a) interferes with the restricting member 6, and the counterclockwise rotation of the connecting member 3 is restricted.

Returning to FIG. Two detection sensors 7 (see FIG. 6) are arranged on the support portion 2a. The detection sensor 7 detects whether the rotation angle of the connecting member 3 around the shaft member 4 is a predetermined angle, and receives light projected from a light projecting unit (not shown). received by Shimese not) it is constructed as a proximity sensor for detecting the presence or absence of the connecting member 3 by a change in the amount of light received.

  Note that the two detection sensors 7 in the present embodiment are in a state where the connecting member 3 is rotated 35 ° clockwise from the basic posture in the top view of the connecting device 1 (see FIG. 2B) (hereinafter referred to as “No. 1) and a state of being rotated 35 ° counterclockwise from the basic posture in the top view (see FIG. 2B) from the basic posture (hereinafter referred to as “second restricted posture”). In such a case, the connection members 3 are arranged so as to be detected.

  The connecting member 3 connects the pair of attachment members 2 and is formed of a rigid material into a cylindrical body as shown in FIG. 3A, and as shown in FIG. 2, the pair of shaft support portions 3a. It has. The shaft support portion 3 a is a portion that is supported by the mounting member 2 by the shaft member 4, and is disposed at both ends of the connecting member 3.

  As shown in FIG. 2A, the shaft support 3a has a through hole 3a1, and the shaft member 4 is inserted through the through hole 3a1. That is, the shaft support portion 3a is pivotally supported on the mounting member 2 by the shaft member 4 inserted into the through hole 3a1 in a state of being interposed between a pair of support portions 2a and 2b provided on the mounting member 2. Yes.

  Here, the shaft support portion 3a is configured such that a dimension L1 in the vertical direction of the transport vehicle (UD direction, see FIG. 1) is smaller than the facing distance L2 between the pair of support portions 2a and 2b (L1 <L2). . Thereby, a clearance gap is provided between the shaft support part 3a and the pair of support parts 2a, 2b, and the connecting member 3 can be moved in the vertical direction of the transport vehicle by the clearance.

  Therefore, even when the height of the travel path on which one of the transport vehicles C1 travels is different from the height of the travel path on which the other transport vehicle C2 travels (for example, an uneven road, a slope, or the like), the connecting member 3 is connected to the transport vehicles C1, 1. By moving in the vertical direction of C2, the two transport vehicles C1 and C2 can be connected without being affected by the travel path.

  An elastic member 9 made of a rubber-like elastic material is disposed in the gap provided between the shaft support portion 3a and the support portion 2b in order to prevent interference between the shaft support portion 3a and the support portion 2b. Has been.

  Further, as shown in FIG. 3B, the inner surface of the through-hole 3a1 is formed in a curved surface that is convex toward the inside of the through-hole 3a1. As a result, the connecting member 3 can be swung with respect to the mounting member 2.

  Therefore, even when the height of the travel path on which one of the transport vehicles C1 travels is different from the height of the travel path on which the other transport vehicle C2 travels (for example, uneven roads, slopes, etc.), the connecting member 3 is attached to the mounting member 2. By swinging against the two, the two transport vehicles C1 and C2 can be connected without being affected by the travel path. Further, since the connecting member 3 swings with respect to the mounting member 2, the shaft member 4 can be prevented from being twisted with respect to the through hole 3a1.

  Here, the pair of shaft support portions 3a are detachably screwed to both ends of the connecting member 3, respectively. That is, the connecting member 3 is configured to be divided into three parts, that is, a pair of shaft support portions 3a and a main body portion 3b in which the pair of shaft support portions 3a are screwed. Thereby, carrying and storage of the coupling device 1 are facilitated, and convenience can be improved.

  Further, as shown in FIG. 2, a lifting member 10 for lifting the main body 3b by a hoisting device or the like (not shown) is disposed on the main body 3b. Thereby, carrying of the connecting device 1 can be facilitated, and the burden on the operator can be reduced.

  The shaft member 4 pivotally supports the connecting member 3 on the mounting member 2 and is formed in a cylindrical body having an axis O. As shown in FIG. 2A, the mounting member 2 is a transport vehicle C1. In the state where it is attached to C2, the axis O is arranged in the vertical direction (UD direction, see FIG. 1) of the transport vehicles C1 and C2.

  As described above, the fixing member 5 is for attaching the attachment member 2 to the transport vehicles C1 and C2, and is fixed to the transport vehicles C1 and C2. Here, the fixing member 5 will be described with reference to FIG. 5A is a top view of the fixing member 5, and FIG. 5B is a cross-sectional view of the fixing member 5 taken along the line Vb-Vb in FIG. 5A.

  As shown in FIG. 5, the fixing member 5 includes a locking portion 5 a. The locking part 5a is a part where the mounting member 2 is locked, and is recessed in a rectangular shape when viewed from above. The attachment member 2 locked to the locking portion 5a is screwed to the fixing member 5 and is attached to the transport vehicles C1 and C2 via the fixing member 5 (see FIG. 2).

  Thereby, the attachment member 2 is attached to the conveyance vehicles C1 and C2 in a state where the attachment member 2 is engaged with the engagement portion 5a. Therefore, the attachment strength of the attachment member 2 to the transport vehicles C1 and C2 can be ensured.

  Further, since the attachment member 2 is screwed to the fixing member 5 and is detachably attached to the transport vehicles C1 and C2, the connection device 1 is removed from the transport vehicles C1 and C2 when the connection device 1 is unnecessary. It is possible to improve convenience.

  Here, as shown in FIG. 1, the fixing member 5 is disposed in front of and behind the transport vehicles C <b> 1 and C <b> 2, respectively. Accordingly, as shown in FIG. 1A, the fixing member 5 disposed in front of the transport vehicle C1 (or transport vehicle C2) and the rear of the transport vehicle C2 (or transport vehicle C1). A pair of attachment members 2 are respectively screwed to the fixed member 5 so that the front of the transport vehicle C1 (or the transport vehicle C2) and the rear of the transport vehicle C2 (or the transport vehicle C1) are connected to each other. Can be linked together.

  Further, as shown in FIG. 1B, a pair of attachment members 2 are screwed to the fixing member 5 disposed in front of the transport vehicle C1 and the fixing member 5 disposed in front of the transport vehicle C2. By providing, the front of the conveyance vehicle C1 and the front of the conveyance vehicle C2 can be connected by the connection device 1.

  As described above, according to the connecting device 1 in the present embodiment, the pair of mounting members 2 that are respectively attached to the two transport vehicles C1 and C2, and the connecting member 3 that connects the pair of mounting members 2; Therefore, the two transport vehicles C1 and C2 can be connected via the connecting member 3. Further, since the connecting member 3 is made of a rigid material, one of the two transported vehicles C1 and C2 connected to one transport vehicle C1 (or the transport vehicle C2) is replaced with the other transport vehicle C2 (or the transport vehicle). It can be pulled and pushed by the car C1).

  Thereby, for example, even when the transport vehicle C1 breaks down and cannot travel, the failed transport vehicle C1 is connected to the normal (travelable) transport vehicle C2, and the failed transport vehicle C1 is connected to the normal transport vehicle. By pulling or pushing in with C2, the failed transport vehicle C1 can be easily moved to a desired place and can be stopped at a fixed position with high accuracy.

  Further, according to the coupling device 1 in the present embodiment, since the coupling member 3 is formed in a cylindrical body, stress concentration hardly occurs and the proof strength of the coupling member 3 against towing and pushing can be ensured. Thereby, durability can be improved. In addition, the weight of the connecting member 3 can be reduced as compared with the case of a solid cylindrical body.

  Moreover, according to the connection apparatus 1 in this Embodiment, it has a pair of shaft member 4 which pivotally supports the connection member 3 to the attachment member 2, and these attachment members 2 are conveyance vehicles C1, C2. Since the shaft center O is arranged in the vertical direction (height direction) of the transport vehicles C1 and C2 in the state of being attached to the connecting member 3, the connecting member 3 is centered on the left and right of the transport vehicles C1 and C2. It is possible to rotate in the direction (width direction).

  Thus, when the transport vehicles C1 and C2 turn, the connecting member 3 rotates in the left-right direction of the transport vehicles C1 and C2 around the shaft member 4, so that the two transport vehicles C1 and C2 connected to each other can rotate. It is possible to turn.

  Further, according to the connecting device 1 in the present embodiment, the rotation of the connecting member 3 around the shaft member 4 is restricted within a predetermined angle range by the restricting member 6, so that the two transport vehicles C1, C2 Are connected by the connecting device 1 to prevent a jackknife phenomenon that may occur when one transport vehicle C1 (or transport vehicle C2) is pushed into the other transport vehicle C2 (or transport vehicle C1). it can.

  Next, with reference to FIG. 6, the control device 70 mounted on the transport vehicles C1 and C2 will be described. FIG. 6 is a block diagram showing an electrical configuration of the control device 70. In FIG. 6, an apparatus (for example, a sensor that detects a derivative laid on the travel path) for traveling the transport vehicles C <b> 1 and C <b> 2 is omitted.

  The control device 70 is a device for controlling each part of the transport vehicles C1 and C2, and includes a CPU 71, a ROM 72, and a RAM 73, which are connected to the input / output port 75 via the bus line 74, as shown in FIG. Has been. The input / output port 75 is connected to various devices mounted on the transport vehicles C1 and C2.

  The CPU 71 is an arithmetic unit that controls each unit connected to the bus line 74, and the ROM 72 stores a control program executed by the CPU 71 (for example, a flowchart of the risk avoidance process shown in FIG. 7), fixed value data, and the like. This is a non-rewritable non-volatile memory to be stored. The RAM 73 is a memory that stores various work data, flags, and the like in a rewritable manner when the control program is executed.

  The angle detection device 76 is a device for detecting whether or not the rotation angle of the connecting member 3 around the shaft member 4 is a predetermined angle, and each of the angle detection devices 76 is disposed on the pair of attachment members 2 by two. Each of the detection sensors 7 and a transmission circuit (not shown) that transmits a detection signal to the CPU 71 based on the detection results of the four detection sensors 7 are provided. The detection sensor 7 detects the connecting member 3 when the connecting member 3 is in the first restriction posture and the second restriction posture.

  The notification device 77 is a device for notifying workers on the production site of various types of information, and includes a speaker 77a and a lamp 77b. As will be described later, when the CPU 71 receives the detection signal from the angle detection device 76, the CPU 71 emits a warning sound from the speaker 77a and causes the lamp 77a to emit light.

  The fuel supply device 78 is a device for supplying fuel to an engine 79 that is a power source of the transport vehicles C1 and C2.

  Next, the risk avoidance process executed by the control device 70 will be described with reference to FIG. FIG. 7 is a flowchart showing the danger avoidance process. In the risk avoidance process, two transport vehicles C1 and C2 are connected by the connecting device 1, and one transport vehicle C1 (or transport vehicle C2) is pushed by the other transport vehicle C2 (or transport vehicle C1). This process is to be executed repeatedly (for example, at intervals of 0.2 ms) by the CPU 71 while the control device 70 is powered on.

  Regarding the risk avoidance process, the CPU 71 first determines whether or not a detection signal is received from the angle detection device 76 (S1), and if it is determined that the detection signal is not received (S1: No), This danger avoidance process is terminated.

  That is, when it is determined that the detection signal has not been received (S1: No), the connection member 3 has not reached the first restriction posture or the second restriction posture, and thus there is a low possibility of causing the jackknife phenomenon. , S2 and S3 are skipped.

  On the other hand, if it is determined that the detection signal has been received as a result of the processing of S1 (S1: Yes), a warning sound is emitted from the speaker 77a and the lamp 77b is caused to emit light (S2). The fuel supply to the engine 79 is stopped (S3), and this danger avoidance process is terminated.

  That is, when it is determined that the detection signal has been received (S1: Yes), the connecting member 3 has reached the first restriction posture or the second restriction posture, which may cause a jackknife phenomenon. A warning sound is emitted and the lamp 77b is caused to emit light. As a result, it is possible to inform the worker on the production site of the possibility of the occurrence of the jackknife phenomenon.

  Further, in such a case (S1: Yes), there is a possibility that a jackknife phenomenon may occur, so the fuel supply to the engine 79 by the fuel supply device 78 is stopped. Thereby, the jackknife phenomenon can be prevented beforehand.

  As described above, the present invention has been described based on the embodiments, but the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed. For example, the numerical values given in the above embodiment are merely examples, and other numerical values can naturally be adopted.

  In the above embodiment, the case where the attachment member 2 is attached to the transport vehicles C1 and C2 via the fixed member 5 has been described. However, the present invention is not necessarily limited to this, and the attachment member 2 is directly attached to the transport vehicles C1 and C2. You may comprise so that it may attach.

  In the above embodiment, the case where the connecting member 3 is configured as a cylindrical body has been described. However, the present invention is not necessarily limited thereto, and may be configured as, for example, a columnar body or a prismatic body.

  In the above embodiment, the case where the connecting member 3 is pivotally supported by the mounting member 2 by the shaft member 4 is described. However, the present invention is not necessarily limited to this, and the connecting member 3 is connected to the mounting member 2 by a ball joint. You may comprise as follows.

  Also in this case, since the connecting member 3 can be swung with respect to the mounting member 2, the height of the traveling path on which the one transport vehicle C1 (or the transport vehicle C2) travels and the other transport vehicle C2 are also measured. Even when the height of the travel path on which the transport vehicle C1 travels is different (for example, an uneven road or a slope), the connecting member 3 swings with respect to the mounting member 2 to affect the travel path. The two transport vehicles C1 and C2 can be connected without receiving.

  In the above embodiment, the case where the coupling device 1 includes both the regulation member 6 and the detection sensor 7 has been described. However, the present invention is not necessarily limited to this, and only one of the regulation member 6 and the detection sensor 7 is provided. May be configured.

  In the above embodiment, it is determined whether or not a detection signal has been received from the angle detection device 76. If it is determined that the detection signal has been received, a warning sound is emitted from the speaker 77a and the lamp 77b is caused to emit light. Further, the case where the fuel supply to the engine 79 by the fuel supply device 78 is stopped has been described. However, the present invention is not necessarily limited to this. For example, a warning sound is emitted from the speaker 77a and the lamp 77b is emitted. The fuel supply to the engine 79 by the fuel supply device 78 may be stopped.

It is a side view of a conveyance vehicle. (A) is a side view of a connecting device, (b) is a top view of a connecting device. (A) is sectional drawing of the connection member in the IIIa-IIIa line | wire of Fig.2 (a), (b) is sectional drawing of the support part in the IIIb-IIIb line | wire of Fig.2 (a). FIG. 4 is an enlarged top view of a coupling device in which a portion indicated by IV in FIG. (A) is a top view of a fixing member, (b) is sectional drawing of the fixing member in the Vb-Vb line | wire of Fig.5 (a). It is a block diagram which shows the electric constitution of a control apparatus. It is a flowchart which shows a danger avoidance process.

DESCRIPTION OF SYMBOLS 1 Connection apparatus 2 Attachment member 2a, 2b Support part 3 Connection member 3a Shaft support part 3a1 Through-hole 4 Shaft member 5 Fixing member 5a Locking part 6 Restriction member 7 Detection sensor (angle detection means)
C1, C2 Conveying vehicle O Axle center L1 of shaft member Dimension L2 in vertical direction of conveying vehicle of shaft support portion L2 Opposite distance of pair of support portions

Claims (6)

In a connecting device that connects two transport vehicles having a driver's seat in front ,
A pair of attachment members detachably attached to the two transport vehicles,
Connecting the pair of mounting members and connecting members made of a rigid material;
A pair of shaft members that respectively pivotally support the connecting member on the pair of mounting members;
A fixing member fixed to the upper surface of the transport vehicle,
The pair of shaft members are disposed with their shafts oriented in the vertical direction of the transport vehicle in a state where the mounting member is mounted on the transport vehicle,
The mounting member includes a plate-like fixed portion formed in a substantially rectangular shape in a top view of the transport vehicle,
The fixing member includes a locking portion that is formed so that the mounting member can be locked by recessing a part of the upper surface of the fixing member toward the lower direction of the transport vehicle,
The locking portion is positioned below the upper surface of the fixing member and has a flat bottom locking bottom surface having a shape corresponding to the fixed portion in a top view of the transport vehicle, and the locking bottom surface and the fixing A locking wall surface provided perpendicularly to the upper surface of the member, and a side end surface of the fixed portion located on the left and right sides and the center side of the transport vehicle is locked to the locking wall surface. And the displacement of the mounting member in the left-right direction relative to the transport vehicle and the displacement in the direction opposite to the side to which the coupling member is coupled are regulated by being screwed to the fixing member. apparatus. The mounting member includes a pair of support portions that support the shaft member and are opposed to each other in the vertical direction of the transport vehicle in a state of being attached to the transport vehicle.
The connecting member includes a shaft support portion through which a through hole through which the shaft member is inserted, and the shaft support portion is inserted through the through hole in a state of being interposed between the pair of support portions. It is pivotally supported on the mounting member by a shaft member,
The connecting device according to claim 1, wherein the shaft support portion is configured such that a size in a vertical direction of the transport vehicle is smaller than a facing interval between the pair of support portions.   The connecting device according to claim 2, wherein an inner surface of the through hole is formed in a curved surface that is convex toward the inner side of the through hole.   The connecting device according to claim 1, wherein the connecting member is formed in a cylindrical body.   5. The coupling device according to claim 1, further comprising a regulating member that regulates rotation of the coupling member around the shaft member within a predetermined angle range. 6. The coupling device according to claim 1, further comprising angle detection means for detecting whether a rotation angle of the coupling member around the shaft member is a predetermined angle.

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