CN114389003A

CN114389003A - Industrial vehicle

Info

Publication number: CN114389003A
Application number: CN202111114330.XA
Authority: CN
Inventors: 中村宏明
Original assignee: Toyota Industries Corp
Current assignee: Toyota Industries Corp
Priority date: 2020-10-02
Filing date: 2021-09-23
Publication date: 2022-04-22
Also published as: JP2022059697A; JP7452365B2

Abstract

Provided is an industrial vehicle wherein a satellite positioning antenna can be easily assembled and the reception sensitivity of the satellite positioning antenna with respect to radio signals from a satellite can be maintained well even if the satellite positioning antenna is disposed in a cabin. A satellite positioning antenna (40) disposed in a cabin (30) can be projected from a communication device (41) to a position facing a sunroof (37) via a bracket (50) only by attaching the communication device (41) having the bracket (50) integrally formed thereon to a surface of a roof panel (31) on the side of a cab (20). Thus, radio signals from the satellite are received by the satellite positioning antenna (40) through the sky window (37). Therefore, even if the satellite positioning antenna (40) is arranged in the cabin (30), the receiving sensitivity of the satellite positioning antenna (40) to the radio wave signal from the satellite can be well maintained.

Description

Industrial vehicle

Technical Field

The present invention relates to industrial vehicles.

Background

For example, a forklift which is one type of industrial vehicles may include a satellite positioning antenna for receiving a radio signal from a satellite and a communication device for performing wireless communication with the outside based on the radio signal received by the satellite positioning antenna. In this case, if the satellite positioning antenna is attached to the vehicle body in a state of protruding to the outside of the vehicle body of the forklift, the satellite positioning antenna may collide with a surrounding object during traveling of the forklift, for example.

Therefore, in order to avoid collision of the satellite positioning antenna with surrounding objects, it is conceivable to dispose the satellite positioning antenna in the cab without protruding outside the vehicle body, for example. However, when the vehicle body of the forklift has a cabin (cabin) constituting a cab, the ceiling of the cabin may prevent the satellite positioning antenna from receiving the radio signal from the satellite, and the reception sensitivity of the satellite positioning antenna to the radio signal from the satellite may deteriorate.

Therefore, in order to ensure a visual field of the operator in the cabin to the outside of the cabin, a sunroof may be provided on the ceiling of the cabin. In such a case, for example, in patent document 1, a bracket to which a satellite positioning antenna is attached is fixed to a portion of the roof panel on the cab side, and the satellite positioning antenna is projected from the portion of the roof panel on the cab side to a position facing the sunroof via the bracket. Thus, since the radio signal from the satellite is received by the satellite positioning antenna through the sunroof, even if the satellite positioning antenna is disposed in the cabin, the reception sensitivity of the satellite positioning antenna to the radio signal from the satellite can be maintained well.

Patent document 1: japanese patent laid-open publication No. 2013-87466

Disclosure of Invention

However, in patent document 1, since the communication device is mounted on the bottom portion in the cabin, it is necessary to separately perform the work of assembling the bracket to the cabin and the work of assembling the communication device to the cabin, and therefore the assembling work becomes complicated.

The present invention has been made to solve the above-described problems, and provides an industrial vehicle that can realize a structure that can maintain good reception sensitivity of a satellite positioning antenna for radio signals from satellites by a simple assembly work even if the satellite positioning antenna is disposed in a cabin.

An industrial vehicle for solving the above problems includes: a vehicle body having a cabin constituting a cab; a satellite positioning antenna for receiving radio signals from a satellite; and a communication device that performs wireless communication with the outside based on the radio wave signal received by the satellite positioning antenna, wherein the cabin has a roof panel and a sunroof provided on the roof panel, and the industrial vehicle includes: and a bracket that connects the communication device to the satellite positioning antenna and is provided integrally with the communication device, wherein the communication device is attached to the cab-side surface of the roof panel, and the satellite positioning antenna protrudes from the communication device through the bracket to a position facing the sunroof.

Thus, the satellite positioning antenna disposed in the cabin can be projected from the communication device to the position facing the sunroof via the bracket, simply by attaching the communication device integrally provided with the bracket to the surface of the roof panel on the cab side. Since the satellite positioning antenna protrudes from the communication device to a position facing the sunroof via the bracket, the radio signal from the satellite is received by the satellite positioning antenna through the sunroof. Therefore, even if the satellite positioning antenna is disposed in the cabin, the reception sensitivity of the satellite positioning antenna to the radio wave signal from the satellite can be maintained well. Thus, even if the satellite positioning antenna is disposed in the cabin, a structure for maintaining good reception sensitivity of the satellite positioning antenna to radio signals from the satellite can be realized by a simple assembly operation.

In the industrial vehicle, the communication device is disposed on the cab-side surface of the roof panel so as to be close to an end portion of the vehicle body in the vehicle width direction.

Thus, for example, compared to a case where the communication device is disposed on the cab-side surface of the roof panel so as to be close to the center portion of the vehicle body in the vehicle width direction, it is possible to suppress the communication device from interfering with the work for the operator in the cabin.

In the industrial vehicle, the bracket extends from the communication device to an end portion of the sunroof in the vehicle width direction.

Thus, for example, compared to a case where the bracket extends from the communication device to the central portion of the sunroof in the vehicle width direction, which is close to the vehicle body, when the operator in the cabin visually observes the outside of the cabin through the sunroof, it is possible to easily avoid the satellite positioning antenna from interfering with the operator in the cabin visually observing the outside of the cabin through the sunroof.

In the industrial vehicle, the bracket is a thin flat plate and extends along the top plate in a state where a thickness direction of the bracket coincides with a thickness direction of the top plate.

This makes it possible to suppress the amount of projection of the bracket to the cab as much as possible, and therefore, it is possible to suppress the bracket from interfering with the work for the operator in the cabin.

According to the present invention, even if the satellite positioning antenna is disposed in the cabin, a structure for maintaining good reception sensitivity of the satellite positioning antenna to the radio wave signal from the satellite can be realized by a simple assembly work.

Drawings

Fig. 1 is a side view showing a forklift according to an embodiment.

Fig. 2 is a perspective view showing a state in which the communication device is mounted on the top plate.

Fig. 3 is an exploded perspective view of the satellite positioning antenna, the cradle, and the communication device.

Fig. 4 is a partial sectional view showing a state in which the cradle is attached to the communication device.

Description of reference numerals:

10: fork lift truck as industrial vehicle

11: vehicle body

20: driver's cabin

30: cabin

31: top board

37: skylight window

40: satellite positioning antenna

41: communication device

50: bracket

Detailed Description

Hereinafter, an embodiment in which the industrial vehicle is embodied as a forklift will be described with reference to fig. 1 to 4. In the following description, "front", "rear", "left", "right", "up" and "down" refer to "front", "rear", "left", "right", "up" and "down" with reference to a state in which an operator who drives a forklift is oriented forward (forward direction) of a vehicle.

As shown in fig. 1, the forklift 10 includes: a vehicle body 11; a drive wheel 12 disposed at a front lower portion of the vehicle body 11; and a steering wheel 13 disposed at a rear lower portion of the vehicle body 11. The forklift 10 further includes a loading/unloading device 14. The handling device 14 includes: a mast (most) 15 vertically provided at a front portion of the vehicle body 11; a lifting bracket 16 fixed to the gantry 15; and a pair of forks 17 attached to the lifting bracket 16. The fork 17 is loaded with a load.

The handling device 14 includes a lift cylinder 18 for lifting and lowering the lift bracket 16. Then, the fork 17 is moved up and down together with the lifting bracket 16 by the operation of the lifting cylinder 18. The gantry 15 supports a lifting bracket 16 to be able to lift. The handling device 14 further includes a swing cylinder 19 for tilting the gantry 15. Then, the fork 17 is tilted together with the door frame 15 by the driving of the swing hydraulic cylinder 19. The lift cylinder 18 and the swing cylinder 19 are hydraulic cylinders.

The vehicle body 11 has a cabin 30 constituting a cab 20. The cabin 30 has: a top panel 31, a front panel 32, a rear panel 33, and a pair of side panels 34. The cabin 30 is a square box shape erected upward from the lower portion of the vehicle body 11. The top plate 31, the front plate 32, the rear plate 33, and the pair of side plates 34 are made of metal. A transparent front window, not shown, is provided on the front plate 32. A transparent rear window, not shown, is provided on the rear plate 33. The pair of side plates 34 are located on both sides of the vehicle body 11 in the vehicle width direction. Each side plate 34 is provided with a door 35. Each door 35 can be opened and closed with respect to each side plate 34. Each door 35 is provided with a transparent side window 36.

As shown in fig. 2, a louver 37 is provided on the top panel 31. Therefore, the cabin 30 has a sunroof 37 provided on the roof panel 31. The louver 37 is provided in a portion near the front of the roof panel 31. The louver 37 is a transparent plate made of glass or resin, for example. The operator in the cabin 30 can visually observe the outside of the cabin 30 through the sunroof 37. The louver 37 is provided on the ceiling 31, for example, to allow an operator in the cabin 30 to visually observe the state of a load loaded on the fork 17 raised relative to the mast 15.

The cab 20 is partitioned by a roof panel 31, a front panel 32, a rear panel 33, and a pair of side panels 34. The cab 20 is opened to the outside by opening the door 35 with respect to the side plate 34, and is closed to the outside by closing the door 35 with respect to the side plate 34.

As shown in fig. 1, cab 20 is provided with a cab seat 21 on which an operator sits. The cab 20 is provided with a plurality of loading/unloading levers 22 for performing various operations such as an up-down operation and a tilting operation of the loading/unloading device 14, and a steering wheel 23 for steering the forklift 10. An accelerator pedal 24 is provided on the floor of the cab 20.

The forklift 10 includes: a running motor M1 for driving the drive wheels 12, and a battery B1. Then, the forklift 10 travels at a vehicle speed corresponding to the accelerator opening degree of the accelerator pedal 24 by controlling the driving of the travel motor M1 corresponding to the accelerator opening degree of the accelerator pedal 24. Therefore, the forklift 10 of the present embodiment is a battery-type forklift that runs by supplying electric power from the battery B1 to the running motor M1 to drive the running motor M1 and by driving the running motor M1 to rotationally drive the drive wheels 12.

As shown in fig. 2, the forklift 10 includes: a satellite positioning antenna 40, a communication device 41, and a cradle 50. The satellite positioning antenna 40 receives radio signals from satellites. The satellite Positioning antenna 40 is a gps (global Positioning system) antenna. Then, the satellite positioning antenna 40 receives an electric wave signal related to the position information from the satellite.

The communication device 41 includes: a cover member 42, a control unit 43 housed within the cover member 42, and a portable communication antenna 44. The control unit 43 is electrically connected to the satellite positioning antenna 40 via a wiring not shown. In addition, the control unit 43 is electrically connected to the portable communication antenna 44. The portable communication antenna 44 wirelessly communicates with an external management server corresponding to the present invention provided outside the forklift 10.

Then, the radio wave signal received by the satellite positioning antenna 40 is transmitted to the control unit 43 via the wiring. The control unit 43 receives the radio wave signal transmitted from the satellite positioning antenna 40, and acquires position information based on the radio wave signal. Then, the control unit 43 transmits the acquired position information to the portable communication antenna 44. The portable communication antenna 44 performs wireless communication with the management server, and transmits the position information transmitted from the control unit 43 to the management server. Therefore, the communication device 41 performs wireless communication with the outside based on the radio wave signal received by the satellite positioning antenna 40. The management server receives the position information transmitted from the control unit 43, and manages the operation of the forklift 10 based on the position information or manages information on the load loaded on the forks 17 of the forklift 10.

As shown in fig. 3, the cover member 42 has: an end wall 42a having an elongated rectangular plate shape in plan view, and a peripheral wall 42b extending in an elongated rectangular tubular shape from an outer peripheral portion of the end wall 42 a. In addition, the cover member 42 has a flange wall 42 f. The flange wall 42f is a plate-like wall extending annularly outward from an opening edge of the peripheral wall 42b on the side opposite to the end wall 42 a.

A plurality of first bolt insertion holes 42c through which the first bolts 51 can be inserted are formed in the flange wall 42 f. Each first bolt insertion hole 42c penetrates the flange wall 42f in the thickness direction. Each of the first bolt insertion holes 42c is disposed in a portion of the flange wall 42f of the peripheral wall 42b that is continuous with a portion located on one side in the direction in which the long side of the peripheral wall 42b extends. The first bolt insertion holes 42c are arranged adjacent to each other in a direction in which the short sides of the peripheral wall 42b extend.

A plurality of second bolt insertion holes 42d through which the second bolts 52 can be inserted are formed in the flange wall 42 f. Each second bolt insertion hole 42d penetrates the flange wall 42f in the thickness direction. The second bolt insertion holes 42d are disposed at two diagonal positions of the four corners of the flange wall 42 f.

The bracket 50 is a rectangular flat plate. The bracket 50 is a thin plate-like plate. One end in the direction in which the long sides of the bracket 50 extend is referred to as a first end 501, and the other end in the direction in which the long sides of the bracket 50 extend is referred to as a second end 502. Bracket holes 50h through which the first bolts 51 can be inserted are formed in the first end portions 501 of the brackets 50. Each bracket hole 50h penetrates the bracket 50 in the thickness direction. The bracket holes 50h are disposed adjacent to each other in the direction in which the short sides of the bracket 50 extend in the first end portion 501 of the bracket 50.

One surface of the bracket 50 in the thickness direction is a first surface 50a, and the other surface of the bracket 50 in the thickness direction is a second surface 50 b. A portion of first surface 50a of bracket 50 on the second end 502 side serves as an attachment portion 50c to which satellite positioning antenna 40 is attached. The satellite positioning antenna 40 is attached to the attachment portion 50c by a magnet or the like, for example.

As shown in fig. 3 and 4, the bracket 50 is disposed on the cover member 42 such that a portion of the second surface 50b of the bracket 50 on the first end 501 side overlaps a surface opposite to the peripheral wall 42b of the flange wall 42 f. At this time, the thickness direction of the bracket 50 coincides with the thickness direction of the flange wall 42f, and the direction in which the long sides of the bracket 50 extend coincides with the direction in which the long sides of the peripheral wall 42b extend. Then, each first bolt insertion hole 42c overlaps each bracket hole 50h in the thickness direction of the bracket 50 and the thickness direction of the flange wall 42 f. Therefore, when the first bolt insertion holes 42c and the bracket holes 50h are viewed from the thickness direction of the bracket 50 and the thickness direction of the flange wall 42f, the first bolt insertion holes 42c communicate with the bracket holes 50 h.

Then, the first bolts 51 are sequentially passed through the first bolt insertion holes 42c and the bracket holes 50h, and the nuts 53 are screwed to the first bolts 51 from the first surface 50a side of the bracket 50. Then, the flange wall 42f and the bracket 50 are sandwiched between the head of each first bolt 51 and each nut 53, whereby the bracket 50 is attached to the flange wall 42 f. In this way, the bracket 50 is provided integrally with the communication device 41. Then, the cradle 50 connects the communication device 41 to the satellite positioning antenna 40.

As shown in fig. 2, the communication device 41 is disposed on the top plate 31 such that the direction in which the long sides of the peripheral wall 42b of the cover member 42 extend coincides with the front-rear direction of the vehicle body 11, and the bracket 50 extends from the communication device 41 toward the front of the vehicle body 11. The bracket 50 extends along the top plate 31 in a state where the thickness direction of the bracket 50 coincides with the thickness direction of the top plate 31.

Two boss portions 54 are provided on the surface of the roof panel 31 on the cab 20 side, protruding from one end portion of the vehicle body 11 in the vehicle width direction. Each boss portion 54 is disposed at a position overlapping each second bolt insertion hole 42d in the vertical direction of the vehicle body 11 when the communication device 41 is disposed on the roof panel 31, so that the direction in which the long side of the peripheral wall 42b of the cover member 42 extends coincides with the front-rear direction of the vehicle body 11, and the bracket 50 extends forward of the vehicle body 11 from the communication device 41.

Then, the communication device 41 is attached to the surface of the roof panel 31 on the cab 20 side via the boss portions 54 by screwing the second bolts 52 into the boss portions 54 through the second bolt insertion holes 42d, respectively. The communication device 41 is disposed on the surface of the roof panel 31 on the cab 20 side so as to be close to the end of the vehicle body 11 in the vehicle width direction. Bracket 50 extends from communication device 41 to one end of sunroof 37 in the vehicle width direction. Then, the satellite positioning antenna 40 protrudes from the communication device 41 to a position facing the sunroof 37 via the bracket 50.

Next, the operation of the present embodiment will be explained.

Since the satellite positioning antenna 40 protrudes from the communication device 41 to a position facing the sunroof 37 via the bracket 50, the radio signal from the satellite is received by the satellite positioning antenna 40 through the sunroof 37. Therefore, the reception sensitivity of the satellite positioning antenna 40 to the radio wave signal from the satellite can be kept good.

In the above embodiment, the following effects can be obtained.

(1) By simply attaching the communication device 41 integrally provided with the bracket 50 to the surface of the roof panel 31 on the cab 20 side, the satellite positioning antenna 40 disposed in the cabin 30 can be projected from the communication device 41 to the position facing the sunroof 37 via the bracket 50. Since the satellite positioning antenna 40 protrudes from the communication device 41 to a position facing the sunroof 37 via the bracket 50, the satellite positioning antenna 40 receives the radio signal from the satellite through the sunroof 37. Therefore, even if the satellite positioning antenna 40 is disposed in the cabin 30, the reception sensitivity of the satellite positioning antenna 40 to the radio wave signal from the satellite can be maintained well. Thus, even if the satellite positioning antenna 40 is disposed in the cabin 30, a structure that can maintain the reception sensitivity of the satellite positioning antenna 40 to the radio wave signal from the satellite can be realized by a simple assembly work.

(2) The communication device 41 is disposed on the surface of the roof panel 31 on the cab 20 side so as to be close to the end of the vehicle body 11 in the vehicle width direction. Thus, for example, compared to the case where the communication device 41 is disposed on the surface of the roof panel 31 on the cab 20 side so as to be close to the center portion of the vehicle body 11 in the vehicle width direction, it is possible for the operator in the cabin 30 to suppress the communication device 41 from interfering with the work.

(3) The bracket 50 extends from the communication device 41 toward an end of the sunroof 37 in the vehicle width direction of the vehicle body 11. For example, a case is considered in which the bracket 50 extends from the communication device 41 toward the center portion of the sunroof 37 in the vehicle width direction of the vehicle body 11. In contrast to this, when the operator in the cabin 30 visually observes the outside of the cabin 30 through the sunroof 37, it is possible to easily avoid the satellite positioning antenna 40 from interfering with the operator in the cabin 30 visually observing the outside of the cabin 30 through the sunroof 37.

(4) The bracket 50 is a thin plate-like plate and extends along the top plate 31 in a state where the thickness direction of the bracket 50 coincides with the thickness direction of the top plate 31. This can suppress the amount of projection of the bracket 50 toward the cab 20 as much as possible, and therefore, for the operator in the cabin 30, it can suppress the bracket 50 from interfering with the work.

(5) The satellite positioning antenna 40 and the communication device 41 are disposed in the cabin 30. Therefore, as in the case where the satellite positioning antenna 40 and the communication device 41 are disposed outside the cabin 30, for example, when the forklift 10 is traveling, the satellite positioning antenna 40 or the communication device 41 can avoid a problem of collision with an object existing around the forklift 10.

The above embodiment can be modified and implemented as follows. The above-described embodiment and the following modifications can be combined and implemented within a range not technically contradictory to the technology.

In the embodiment, for example, the communication device 41 may be disposed on the surface of the roof panel 31 on the cab 20 side so as to be close to the center portion of the vehicle body 11 in the vehicle width direction. In short, the communication device 41 may be attached to the surface of the roof panel 31 on the cab 20 side, and the position of the surface of the roof panel 31 on the cab 20 side is not particularly limited.

In the embodiment, for example, the bracket 50 may extend from the communication device 41 toward the center portion of the sunroof 37 in the vehicle width direction near the vehicle body 11. In short, the extending direction of the bracket 50 from the communication device 41 is not particularly limited as long as the satellite positioning antenna 40 protrudes from the communication device 41 to a position facing the sunroof 37 via the bracket 50.

In the embodiment, the thickness direction of the bracket 50 may not coincide with the thickness direction of the top plate 31.

In the embodiment, the bracket 50 may not be a thin flat plate. In short, the shape is not particularly limited as long as the bracket 50 connects the communication device 41 to the satellite positioning antenna 40 and is provided integrally with the communication device 41.

In the embodiment, a method of fixing the communication device 41 to the top plate 31 is not particularly limited.

In the embodiment, a method of fixing the cradle 50 to the communication device 41 is not particularly limited.

In the embodiment, the forklift 10 is not limited to the battery type, and may be, for example, an engine type, or may be a hybrid type including an engine in addition to the battery B1.

In the embodiment, the forklift 10 is embodied as an industrial vehicle, but the invention is not limited thereto, and an industrial vehicle other than the forklift 10 may be embodied. For example, it may also be embodied as a forklift.

Claims

1. An industrial vehicle having:

a vehicle body having a cabin constituting a cab;

a satellite positioning antenna for receiving radio signals from a satellite; and

a communication device that performs wireless communication with the outside based on the radio wave signal received by the satellite positioning antenna,

the cabin has a roof and a skylight provided on the roof,

wherein the industrial vehicle is characterized in that,

having a cradle connecting the communication device with the satellite positioning antenna and being provided integrally with the communication device,

the communication device is attached to the cab-side surface of the roof panel,

the satellite positioning antenna protrudes from the communication device to a position facing the skylight via the bracket.

2. The industrial vehicle as claimed in claim 1 wherein,

the communication device is disposed on the cab-side surface of the roof panel so as to be close to an end portion of the vehicle body in the vehicle width direction.

3. The industrial vehicle as claimed in claim 2 wherein,

the bracket extends from the communication device to an end of the sunroof in the vehicle width direction.

4. The industrial vehicle as claimed in any one of claims 1 to 3,

the bracket is a thin plate-like shape and extends along the top plate in a state where a thickness direction of the bracket coincides with a thickness direction of the top plate.