JP2005343671A - Truck crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a truck crane provided with a public road running regulation device applicable to even a truck crane provided with a suspension of type other than a hydraulic suspension. <P>SOLUTION: This truck crane is provided with a revolving frame loading detection means for detecting a loading condition of a revolving frame 7 for a vehicle part 2, a telescopic boom provision detection means 20 for detecting a provision condition of a telescopic boom 8 for the revolving frame 7, a controller 21 for outputting a regulation signal based on a signal from the swivel base loading detection means or the telescopic boom provision detection means 20, a maximum speed regulation means 23 (24) for regulating the maximum speed during running of the vehicle part 2 based on the regulation signal from the controller 21, and an alarm means 27 (28) for giving alarm for providing the revolving frame 7 or the telescopic boom 8 based on the regulation signal from the controller 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a technology for a crane vehicle configured to be able to travel on a public road by separating a swivel base from a vehicle unit or by separating an extendable boom from the swivel base.

  When the crane truck becomes large, the vehicle unit, the swivel base, and the telescopic boom that constitute the crane truck become larger and heavier, and the total weight of the crane truck that combines them becomes larger. According to the regulations that regulate vehicles traveling on the road (safety standards for road transport vehicles, etc., hereinafter referred to as “regulations”), crane vehicles exceeding the weight calculated based on predetermined conditions are prohibited from traveling on public roads. Therefore, such a large crane vehicle separates the swivel base from the vehicle part, or travels on a public road with the telescopic boom separated from the swivel base, and the separated part is separately transported by a trailer or the like. Yes.

  However, a conventional large crane vehicle is equipped with a swivel base in the vehicle unit, and even when the swivel base is equipped with a telescopic boom (this state is hereinafter referred to as “equipment state”), Although the acceleration performance or the running performance such as the maximum speed is lower than that, there is no case that the public road cannot be used. Running on public roads in such an equipped state should not only violate the above-mentioned laws and the like, but also be restricted from the viewpoint of preventing failure of tires or axles of vehicle parts due to overload.

  The applicant of the present application has applied for a patent on an invention related to a traveling speed regulating device for a crane vehicle as a technique effective for regulating the traveling speed in the field, particularly regarding traveling regulation in the state of installation of the large crane vehicle (for example, Patent Documents). 1). The travel speed regulating device includes a pressure detection unit that detects a suspension cylinder support pressure of the hydraulic suspension, and a calculation unit that outputs a travel speed regulation signal according to the axle load of the crane vehicle based on a pressure signal from the pressure detection unit. And a traveling speed regulating means for regulating the traveling speed by a regulation signal from the calculation unit, automatically calculating a regulation value of the traveling speed associated with an increase in the axle load of the crane truck, and the traveling speed of the crane truck is also automatically It is a regulation.

According to the invention described in the above-mentioned Patent Document 1, since speed regulation can be performed not only during on-site traveling in the equipped state but also during public road traveling, the large crane vehicle can be prevented from traveling on public roads in the mounted state. This is an effective technique in that it has the effect of
Japanese Patent Application No. 2003-201451 (page 4-8, FIG. 6)

  However, since the invention described in Patent Document 1 has a pressure detecting means for detecting the suspension cylinder support pressure of the hydraulic suspension as a constituent requirement, the invention is applied to a crane vehicle having a suspension of a type other than the hydraulic suspension. It was something that could not be done.

  Therefore, the present invention can be applied to a crane vehicle having a suspension of a type other than a hydraulic suspension, and can be applied to a device capable of restricting public road travel in an equipped state (hereinafter referred to as “public road travel restriction device”). ) To provide a crane vehicle.

  The crane vehicle described in claim 1 of the present application includes a vehicle unit, a swivel mounted on the vehicle unit so as to be turnable, a telescopic boom mounted on the swivel so as to be raised and lowered, and the swivel with the swivel. A hoisting cylinder interposed between the boom and driving the hoisting boom.

  And a swivel base mounting detecting means for detecting the mounting state of the swivel base with respect to the vehicle unit, or a telescopic boom equipment detecting means for detecting a mounting state of the telescopic boom with respect to the swivel base, and the swivel base mounting detecting means or the telescopic boom equipment detection A controller that outputs a restriction signal based on a signal from the means, and a maximum speed restriction means for restricting the maximum traveling speed of the vehicle unit based on the restriction signal from the controller or a swivel base based on the restriction signal from the controller And alarm means for warning that the telescopic boom is installed or that the telescopic boom is equipped.

  Furthermore, the crane vehicle described in claim 2 of the present application includes a vehicle unit, a swivel that is turnably mounted on the vehicle unit, a telescopic boom that is swung up and down on the swivel, and the swivel And a hoisting cylinder interposed between the telescopic boom and driving the hoisting boom.

  A load sensing unit disposed in the vehicle unit for detecting a load of the swivel base or the telescopic boom; a controller for outputting a regulation signal based on a signal from the load sensing unit; and the regulation signal from the controller based on the regulation signal. A maximum speed restriction means for restricting the maximum speed during travel of the vehicle section, or an alarm means for warning that the swivel is mounted or the telescopic boom is equipped based on a restriction signal from the controller. It is characterized by that.

  In the invention described in claim 1, it is directly detected that the swivel base mounting detecting means or the telescopic boom equipment detecting means is equipped with the swivel base or equipped with the telescopic boom, and a signal from the detecting means is detected. Since the controller outputs a restriction signal to the maximum speed restricting means of the vehicle part based on the above, it is possible to restrict the public road traveling in the equipped state regardless of the type of suspension of the vehicle part.

  In addition, since the warning means is used to warn that the swivel is mounted or the telescopic boom is equipped based on the restriction signal from the controller, a warning is issued to avoid running on public roads in the equipped state. be able to.

  In the invention described in claim 2, the load sensing means arranged in the vehicle section detects the load of the swivel base or the telescopic boom, and the controller controls the maximum speed regulating means of the vehicle section based on the signal from the load sensing means. Since the restriction signal is output to the vehicle, it is possible to restrict the public road traveling in the equipped state regardless of the type of the suspension.

  As the best mode for carrying out the invention, an example will be described in which the present invention is applied to an alternator crane that has recently become popular among crane vehicles.

  FIG. 1 shows an equipped state of an alternator crane 1 according to Embodiment 1 of the present invention. The vehicle section 2 of the alternator crane 1 includes a cab 3, an engine room 4, a vehicle frame 4, an outrigger 5, and tires 6. A turntable 7 is mounted on the vehicle frame 4 of the vehicle unit 2 via a turn bearing 10 so as to be turnable. The swivel base 7 is equipped with a telescopic boom 8, and a hoisting cylinder 9 for raising and lowering the telescopic boom 8 is interposed between the swivel base 7 and the telescopic boom 8.

  In the installed state of the alternate lane crane 1 shown in FIG. 1, since it exceeds the predetermined axle load defined by the regulations, traveling on public roads is prohibited as it is. FIG. 2 shows a public road running posture in which the telescopic boom 8 is removed from the installed alternator crane 1. The alternator crane 1 shown in FIG. 1 has a maximum rated lifting performance of about 100 tons, and is a relatively small type of large crane vehicle that is restricted from traveling on public roads in an equipped state. When traveling on a public road, if only the telescopic boom 8 is removed, the axle weight of the vehicle unit 2 is within the regulation value based on the law. Therefore, the vehicle unit 2 is mounted with the swivel base 7 and can travel on a public road while leaving the hoisting cylinder 9 on the swivel base 7.

  FIG. 3 is a block diagram of an apparatus for restricting traveling on public roads when the alternator crane 1 shown in FIGS. 1 and 2 is installed. Reference numeral 20 denotes a telescopic boom equipment detection proximity switch, which corresponds to the telescopic boom equipment detection means described in the claims. In order to equip the swivel base 7 shown in FIG. 1 with the telescopic boom 8 so as to be able to move up and down, the base end portion of the telescopic boom 8 is pivotally connected to the revolving frame 11 constituting the swivel base 7 by the connecting pin 12. The telescopic boom equipment detection proximity switch 20 detects the connecting pin 12 when the telescopic boom 8 is connected to the turning frame 11. Therefore, by detecting the connecting pin 12, it is possible to detect the installation of the telescopic boom 8 on the swivel base 7. A detection signal of the telescopic boom equipment detection proximity switch 20 is output to a controller 21 disposed in the vehicle unit 2.

  Reference numeral 29 denotes an accelerator device arranged inside the cab 3 of the vehicle unit 2. The accelerator device 29 outputs an accelerator signal corresponding to the depression amount of the accelerator pedal 22 to the controller 21. Reference numeral 23 denotes an engine disposed in the engine room 4 of the vehicle unit 2, and its engine speed is controlled by an accelerator signal from the controller 21. Reference numeral 24 denotes a transmission, which is connected to the engine 23 so as to be integrated with the engine 23, and shifts according to a shift signal from the controller 21. The engine 23 and the transmission 24 correspond to the maximum speed regulating means described in the claims.

A speed detector 26 detects the rotational speed of the output shaft 25 of the transmission 24, and outputs a detection signal to the controller 21. The controller 21 calculates the traveling speed of the vehicle unit 2 based on the detection signal from the speed detector 26. Reference numerals 27 and 28 denote a telescopic boom equipment display indicator and an alarm buzzer arranged inside the cab 3 of the vehicle unit 2. The telescopic boom equipment display indicator 27 and the alarm buzzer 28 are configured to display an indicator or operate a buzzer based on a signal from the controller 21. The operation of the public road travel restricting device of the alternator crane 1 having the above configuration is as follows.
When driving on public roads (Figure 2)
The telescopic boom equipment detection proximity switch 20 outputs a non-detection signal of the connecting pin 12 of the telescopic boom 8 to the controller 21, and the controller 21 has the telescopic boom 8 removed from the swivel base 7, and the alternator crane Recognize that 1 is a public road running posture. In this case, since the accelerator signal from the accelerator device 29 is directly output to the engine 23 via the controller 21, the engine speed corresponds to the amount of depression of the accelerator pedal 22, and the engine 23 has the maximum speed. Will blow up to. Further, the controller 21 calculates the traveling speed of the vehicle unit 2 based on a signal from the speed detector 26. When a predetermined shift point is reached, a shift signal is output from the controller 21 to the transmission 24, and the transmission 24 is shifted up. To go. From the above, the alternator crane 1 in the public road traveling posture shown in FIG. 2 can travel on the public road at an increased speed up to the maximum speed without any restriction.

At this time, the telescopic boom equipment display indicator 27 indicates that the telescopic boom 8 is not installed on the swivel base 7, and the alarm buzzer 28 emits an alarm sound because it is not necessary to regulate the maximum speed. There is no.
When equipped (Figure 1)
The telescopic boom equipment detection proximity switch 20 outputs the detection signal of the connecting pin 12 to the controller 21, and the controller 21 is equipped with the telescopic boom 8 for the swivel base 7 and the alternator crane 1 is in the equipped state. Recognize that there is. In this case, a restriction signal is output from the controller 21 to the engine 23 or the transmission 24. That is, the accelerator signal from the accelerator device 29 is not directly output to the engine 23 via the controller 21. The engine speed increases up to a predetermined rotational speed in accordance with the depression amount of the accelerator pedal 22, but the increase in the rotational speed is restricted at the predetermined restricted rotational speed, and the engine 23 does not blow up to the maximum rotational speed. Alternatively, the controller 21 calculates the traveling speed of the vehicle unit 2 based on a signal from the speed detector 26, but no shift signal is output from the controller 21 to the transmission 24 even when a predetermined shift point is reached. Is not upshifted.

  From the above, the installed alternator crane 1 shown in FIG. 1 is restricted in traveling speed and can travel only at a predetermined low speed. As the predetermined low speed, a speed suitable for traveling in the work site with the alternated crane 1 installed is set. Since it is practically impossible to continue running on a public road at a low speed, it is possible to effectively restrict the alternator crane 1 from running on a public road with this restriction.

  Further, when a restriction signal is output from the controller 21 to the engine 23 or the transmission 24, since the restriction signal is output to the telescopic boom display indicator 27 or the alarm buzzer 28, the telescopic boom equipment display indicator 27 is telescopic. While displaying that the boom 8 is equipped on the swivel base 7, the alarm buzzer 28 is activated to warn that the equipment is in the equipped state. As a result, it is possible to alert the driver with certainty to stop traveling on a public road while in the equipped state.

  FIG. 4 shows an equipped state of the alternator crane 31 according to the second embodiment of the present invention. The vehicle section 32 of the alternator crane 31 includes a cab 33, an engine room 34, a vehicle frame 44, an outrigger 35, and tires 36. A swivel base 37 is mounted on the vehicle frame 44 of the vehicle unit 32 so as to be turnable by a swivel bearing 40. The swivel base 37 is equipped with a telescopic boom 38, and a hoisting cylinder 39 for raising and lowering the telescopic boom 38 is interposed between the swivel base 37 and the telescopic boom 38. The slewing bearing 40 is provided with a bayonet mechanism, and the slewing base 37 can be removed from the vehicle portion 32 by the bayonet mechanism.

  The alternator crane 31 shown in FIG. 4 is a larger crane vehicle than the alternator crane 1 shown in FIG. 1, and its maximum rated lifting load is 550 tons. Therefore, simply removing the telescopic boom 38 will exceed the predetermined axle load defined by the law. Therefore, as shown in FIG. Only the removed vehicle part 32 can travel on public roads.

  FIG. 6 is a block diagram of an apparatus for restricting traveling on public roads when the alternator crane 31 shown in FIGS. 4 and 5 is installed. Reference numeral 50 denotes a swivel base mounting detection proximity switch, which corresponds to the swivel base mounting detecting means described in the claims. When the swivel base 37 is turnably mounted on the vehicle frame 44 shown in FIG. 4, both are connected by the bayonet device of the swivel bearing 40. The swivel base mounting proximity switch 50 detects the base plate of the swivel frame when the swivel base 37 is mounted on the vehicle frame 44. Accordingly, it is possible to detect the mounting of the swivel base 37 on the vehicle frame 44 by detecting the base plate of the swivel frame. A detection signal of the swivel base mounting detection proximity switch 50 is output to a controller 51 disposed in the vehicle unit 32.

The accelerator device 59, controller 51, engine 53, transmission 54, output shaft 55, and speed detector 56 are the same as those shown in FIG. Reference numerals 57 and 58 denote a swivel mounted display indicator and an alarm buzzer arranged inside the cab 33 of the vehicle unit 32. The swivel base display indicator 57 and the alarm buzzer 58 are configured to display an indicator or buzzer based on a signal from the controller 51. The operation of the public road travel restricting device of the alternator crane 31 having the above configuration is as follows.
When driving on public roads (Figure 5)
The swivel base mounting proximity switch 50 outputs a non-detection signal of the swivel base 37 to the controller 51. The controller 51 has the swivel base 37 removed from the vehicle frame 44. Recognize that it is a public road running posture of only 32. In this case, as in the case of the first embodiment, the alternator crane 31 (only the vehicle section 32) in the public road running posture shown in FIG. You can travel.

At this time, the swivel base mounting indicator 57 indicates that the swivel base 37 is not mounted on the vehicle frame 44, and the alarm buzzer 58 emits an alarm sound because it is not necessary to regulate the maximum speed. There is no.
When equipped (Figure 4)
The turntable mounting detection proximity switch 50 outputs a detection signal of the turntable 37 to the controller 51. The controller 51 is mounted on the vehicle frame 44, and the alternator crane 31 is in the equipped state. Recognize that there is. In this case, as in the first embodiment, the engine speed increases up to a predetermined regulated rotational speed in accordance with the amount of depression of the accelerator pedal 52, but an increase in rotational speed that exceeds the predetermined regulated rotational speed is regulated and the engine 53 is controlled. Does not blow up to the maximum speed. Alternatively, even when the traveling speed reaches a predetermined shift point, a shift signal is not output from the controller 51 to the transmission 54, and the transmission 54 is not shifted up.

  From the above, the installed alternator crane 31 shown in FIG. 4 can travel only at a predetermined low speed in response to the travel speed restriction, and effectively restricts the alternate crane 31 from traveling on the public road in the equipped state. Can do. Further, the swivel base mounting display indicator 57 displays that the swivel base 37 is mounted on the vehicle frame 44, and warns that the alarm buzzer 58 is in the mounted state. As a result, the driver can be surely alerted to traveling on a public road while in the equipped state. The contents of the first embodiment and the second embodiment correspond to the invention described in claim 1.

  FIG. 7 is a block diagram of a public road travel regulating device according to the third embodiment. The block diagram of FIG. 7 is different only in that the swivel base mounting proximity switch 50 of the block diagram of FIG. The load sensing means 60 is disposed in the vehicle unit 32 and detects the load of the swivel base 37 or the telescopic boom 38. As a specific configuration example, a strain gauge is attached to the ring portion of the slewing bearing 40, and the load is detected by detecting strain deformation when the load of the slewing base 37 or the telescopic boom 38 acts on the slewing bearing 40. It may be. The signal detected by the load sensing means 60 is output to the controller 60, and the controller 51 determines whether or not the swivel base 37 is mounted on the vehicle frame 44 or whether or not the telescopic boom 38 is mounted on the swivel base 37. .

  The contents of the restriction on the maximum traveling speed by the maximum speed restricting means including the engine 53 or the transmission 54 and the alarm contents of the alarm means including the display indicator 57 and the alarm buzzer 58 are the same as those in the first or second embodiment. Omitted. As described above, even when the load sensing means 60 is used to detect the mounting of the swivel base 37 or the equipment of the telescopic boom 38, it is possible to restrict the public road traveling in the equipment state regardless of the suspension type of the vehicle section. it can. The contents of the third embodiment correspond to the invention described in claim 3.

It is the equipment state of the alternator crane 1 which concerns on Example 1 of this invention. It is a public road running posture of the alternator crane 1 of FIG. 1 is a block diagram of a public road travel restriction device for an alternator crane 1. FIG. It is the equipment state of the alternator crane 31 which concerns on Example 2 of this invention. It is a public road running posture of the vehicle part 32 of the alternator crane 31 shown in FIG. 2 is a block diagram of a public road travel restriction device for an alternator crane 31. FIG. FIG. 6 is a block diagram of a public road travel restriction device according to a third embodiment.

Explanation of symbols

1 and 31: Alternate cranes 2 and 32: Vehicle sections 3 and 33: Cabs 7 and 37: Turntables 8 and 38: Telescopic booms 9 and 39: Hoisting cylinders 20: Telescopic boom equipment detection proximity switches (extensible boom equipment) Detection means)
21 and 51: Controllers 23 and 53: Engine (maximum speed regulating means)
24 and 54: Transmission (maximum speed control means)
27: Telescopic boom equipment display indicator (alarm means)
28 and 58: Alarm buzzer (alarm means)
50: Proximity switch for swivel base mounting detection (swivel base mounting detection means)
57: swivel mounted display indicator (alarm means)
60: Load sensing means

Claims (2)

A vehicle unit, a swivel mounted on the vehicle unit so as to be turnable, a telescopic boom mounted on the swivel base so as to be raised and lowered, and interposed between the swivel base and the telescopic boom, A crane vehicle having a driving cylinder,
From the swivel base mounting detection means for detecting the mounting state of the swivel base with respect to the vehicle unit, the telescopic boom equipment detection means for detecting the mounting state of the telescopic boom with respect to the swivel base, and the swivel base mounting detection means or the telescopic boom equipment detection means A controller that outputs a restriction signal based on the signal of the vehicle, a maximum speed restriction means for restricting the maximum traveling speed of the vehicle unit based on the restriction signal from the controller, or a swivel base based on the restriction signal from the controller And a warning means for warning that the vehicle is equipped with a telescopic boom. A vehicle unit, a swivel mounted on the vehicle unit so as to be turnable, a telescopic boom mounted on the swivel base so as to be raised and lowered, and interposed between the swivel base and the telescopic boom, A crane vehicle having a driving cylinder,
A load sensing unit disposed in the vehicle unit for detecting a load of the swivel base or the telescopic boom; a controller for outputting a regulation signal based on a signal from the load sensing unit; and the vehicle unit based on a regulation signal from the controller. A maximum speed regulation means for regulating the maximum speed during travel of the vehicle, or an alarm means for warning that a swivel is mounted or an extendable boom is installed based on a regulation signal from the controller. A featured crane truck.

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