JPH04107112U - Power transmission device for aerial work vehicles - Google Patents

Abstract

(57) [Summary] [Purpose] The power transmission structure of an aerial work vehicle can achieve economical effects. [Configuration] Traveling section 1 and working section including vertical lifting device, etc.
21, a prime mover 24 is directly connected to an input shaft 23 of a transmission case 22 on the traveling section side, and the input shaft 23 and a working section drive means 26 such as a hydraulic pump are connected to each other.
A and A were interlocked and connected via a belt clutch mechanism 27.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is intended for use in high places used for harvesting work in orchards and various outdoor construction works. This invention relates to a power transmission device for a work vehicle.

0002

[Conventional technology]

Conventionally, aerial work vehicles have a transmission case on the prime mover, the traveling section side, and the working section side. The moving hydraulic pump is directly connected, and the power of the prime mover is constantly transferred to the traveling section and the working section. There is something to be communicated to.

0003

[Problem that the idea aims to solve]

However, in the above-mentioned aerial work vehicle, the transmission cage on the traveling section is moved by the power of the prime mover. Since the hydraulic pumps on the base and work side are constantly driven, the machine only moves. Because the hydraulic pump on the working part is driven even when the working part is not operated. If the prime mover is an electric motor, there is a lot of waste in battery consumption, so it is difficult to use power efficiently. could not be communicated. Also, if the prime mover is an engine, fuel consumption It was not economical.

0004

[Means to solve the problem]

This invention consists of a traveling section and a working section having a vertical lifting device, etc. In a work vehicle, the prime mover is directly connected to the input shaft of the transmission case on the traveling section, and The input shaft and the working part drive means such as a hydraulic pump are connected via a belt clutch mechanism. We would like to provide a power transmission device for an aerial work vehicle that is characterized by interlocking connections. It is something that

[0005]

【Example】

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

[0006] Figure 1 shows an overall side view of the aerial work vehicle according to the present invention, and 1 in the figure indicates the aerial work vehicle. An endless track body 4 is rotatably wound around a driving wheel 2 and a driven wheel 3 in a running section of a working vehicle A. It's on.

[0007] Reference numeral 5 denotes a traveling frame, in which a swing bearing portion 6 is vertically provided in the center portion. 7 is the same rotation axis A turntable placed on a receiving part 6, with a boom bracket 8 protruding from the top. .

[0008] Reference numeral 9 denotes a hydraulic cylinder for turning, which is interposed between the turntable 7 and the traveling frame 5; 10; is the swivel joint, and 11 is the rotating part. 12 pivots the base to the boom bracket 8 A second boom 14 is connected to the upper end of the first boom via a horizontal pivot shaft 13.

[0009] Reference numeral 15 designates a mounting shaft for pivotally connecting the base of the first boom 12 to the boom bracket 8. 16 is , a lifting hydraulic cylinder installed between the turntable 7 and the top of the first boom 12. , the first boom 12 can be raised and lowered by the lifting hydraulic cylinder 16.

0010 Further, 17 is a triangular parallel support body pivotally supported on the above-mentioned horizontal pivot shaft 13. There is a space between the lower end of the row holder 17 and the turntable 7 that is parallel to the first boom 12. A moving first parallel link 18 is provided. 19 is the work of connecting to the upper end of the second boom 14 A second boom is installed between the work deck 19 and the upper end of the parallel support body 17. A second parallel link 20 is provided which moves parallel to 14. And the first boo above A working section 21 is composed of a boom 12, a second boom 14, a lifting hydraulic cylinder 16, etc. There is.

[0011] In addition, in Fig. 2, 22 is the traveling part side transmission cage installed in the above-mentioned aerial work vehicle A. It has an input shaft 23 in its upper part, and a drive wheel 2 is connected to its lower part. twenty four is a prime mover directly connected to the input shaft 23 of the mission case 22, and the prime mover 24 is An electric motor 24a started by the battery 25 or an engine may be used. 22-1 is a power on/off mechanism provided in the transmission case 22 on the traveling section side.

0012 Further, 26A is a drive means such as a hydraulic pump 26 that drives the working part 21 side, and is It is connected to the lifting hydraulic cylinder 16 via the pressure switching valve 26-1, and is also connected to the belt clamp. It is interlocked and connected to the input shaft 23 via a switch mechanism 27. 28 is a drive fixed on the input shaft 23. Dynamic pulley, 29 is a driven pulley provided on the hydraulic pump 26 side, 30 is an endless belt, 31 is a clamp. This is a tension pulley for switches.

[0013] In addition, 32 is an HST drive mechanism attached to the transmission case 22 on the traveling section side, and 33 is A switch to operate the prime mover 24, 34 is a parking brake provided inside the transmission case 22 It is.

[0014] The embodiment of the present invention is configured as described above, and the above-mentioned aerial work vehicle A is moved in the front and rear directions. When moving the prime mover 24, turn off the belt clutch mechanism 27. When the switch 33 on the side is turned on, the power of the prime mover 24 is transferred to the transmission case 22 on the traveling section side. It is possible to drive the traveling section 1 by transmitting the signal only to the vehicle.

[0015] Then, while the aerial work vehicle A is being operated to the working position, the mission case 22 The on/off mechanism 22 is set to a neutral state, and the parking brake 34 is applied to a fixed state. .

[0016] Next, while turning on the belt clutch mechanism 27, use the drive means 26A on the working part side. The working part 21 can be operated by driving a certain hydraulic pump 26.

[0017] Therefore, while the aerial work vehicle A is running, the power of the prime mover 24 is transmitted to the working part side. Only the traveling section 1 is driven without being transmitted to the hydraulic pump 26. Then, stop the aircraft. When performing various types of work at the same time, power is not transmitted to the traveling section 1 side and the hydraulic port on the working section side is The battery that rotates the electric motor 24a can only drive the motor 26. 25, and the fuel that powers the engine is consumed efficiently.

[0018] Therefore, overall, the structure is simple and energy saving effect can be achieved. It is possible.

[0019] The power of the prime mover 24 is supplied to the transmission case 22 on the traveling section side and the hydraulic port on the working section side. The pump 26 can also be rotationally driven at the same time.

[0020] FIG. 3 shows another embodiment of the power transmission device, in which 40 is used for high-altitude work. A prime mover such as an electric motor or engine that operates a car, including a coupler. A working section side hydraulic pump 42 is directly connected via a ring 41. 43 is on the prime mover side Drive pulley, 44 is a driven pulley that is fixed to the input shaft 46 of the transmission case 45 on the traveling section side , 47 is an endless belt, and 48 is a belt clutch mechanism.

[0021] In addition, 49 is a gear shift lever provided in conjunction with the transmission case 45, and the drive wheel 50 This is to change the speed between the rotating state and the stopped state. 51 is the hydraulic series for lifting and lowering on the working side. The hydraulic pump 42 is connected to the hydraulic pump 42 via a hydraulic switching valve 52.

[0022] In the above embodiment, when the prime mover 40 of the aerial work vehicle is rotated, the oil on the working part side is The pressure pump 42 rotates together with the prime mover 40 and the working part can be operated. When moving the work vehicle, turn on the belt clutch mechanism 48 and change gears. It is necessary to shift the lever 49 and turn it on.

[0023] Therefore, multiple operations are required to move the aircraft, and the working parts are It is safe because the aircraft cannot be moved unexpectedly. Also, in the work section When performing various types of work, the output of the prime mover is directly input to the hydraulic pump 42 side. This improves business efficiency.

[0024] Figures 4 to 7 show the drive system of the traveling section 1 and the working section 21 of the aerial work vehicle. FIG. 3 is a layout diagram showing a driving method.

[0025] In Fig. 4, 60A and 60B are electric motors or engines that drive the traveling section 1, etc. There is one prime mover on each side, one on each side. 61A, 61B are the same prime mover 60A, 60B. This is a controller that variably controls the rotation speed and controls forward and reverse rotation. 62A, 62B are prime movers This is a transmission case that connects 60A and 60B, each with drive wheels 63A and 63B.

[0026] 64 is a prime mover that drives the boom on the working part 21 side so that it can be raised and lowered, and is equipped with a hydraulic pump 65 and an oil It is connected to a lifting hydraulic cylinder 67 via a pressure switching valve 66. Also, 68 is on the working part side This is the prime mover that turns the boom left and right. It is connected to the circulation hydraulic cylinder 71.

[0027] Therefore, in the above embodiment, the running section 1 is driven independently on the left and right sides. In addition, the lifting and lowering of the boom on the working section 21 side and left/right rotation can all be operated independently. , each operation can be performed simultaneously.

[0028] In addition, in FIG. 5, 72 is an electric motor or engine that drives the traveling section 1, etc. The prime mover 73 is a controller that variably controls the rotation speed of the prime mover 72 and controls forward and reverse rotation. It is la. 74 is the transmission case on the running section side, and drive wheels 75 are provided on both the left and right sides. Ru. 76 is a prime mover that drives the boom on the working section 21 side so that it can be raised and lowered, and is powered by a hydraulic pump 77 and It is connected to a lifting hydraulic cylinder 79 via a hydraulic switching valve 78. Also, 79A is working This is an electric unit cylinder that rotates the side boom in the left and right direction.

[0029] Therefore, in the above embodiment, the traveling section 1 is driven by one prime mover 72. At the same time, the lifting and lowering operation of the boom on the working section 21 side is driven by another prime mover 76. stop Then, the transmission case 74 of the traveling section 1 and the lifting hydraulic cylinder 79 on the working section 21 side are connected. Each can be operated independently, and these can be operated simultaneously.

[0030] In addition, in FIG. 6, 80 is an electric motor that drives the traveling section 1 and the working section 21, or A driving part such as an engine, 81 is a drive pulley, 82 is a running section with an HST transmission mechanism 83 A drive wheel 82-1 is provided at the bottom of the transmission case. 84 is the input shaft, 85 is the driven pulley An endless belt 86 is wound between the pulley 81 and the drive pulley 81. 87 is a belt clutch machine 88 is a hydraulic pump directly connected to the prime mover 80, and a hydraulic cylinder 89 for lifting and lowering on the working part 21 side. , and a hydraulic cylinder 90 for left and right rotation. 91-1 and 91-2 are hydraulic switching valves. be.

[0031] Therefore, in the above embodiment, one prime mover 80 serves as the running section 1 and the working section. It is possible to drive the hydraulic cylinder 89 for lifting and lowering on the 21 side and the hydraulic cylinder 90 for left and right rotation. It is possible.

[0032] In this case, the belt clutch mechanism 87 on the traveling section 1 side and the HST transmission mechanism 83 Even if a problem such as that occurs, the work section 21 will operate with priority, so it will not be necessary in an emergency. However, the hydraulic cylinder 89 for lifting and lowering the working part 21 operates to raise and lower the work part 21. It is.

[0033] In addition, in Fig. 7, 92 is an electric motor connected directly to the transmission case 93 on the traveling section 1 side. A prime mover such as a motor or an engine, 94, is an HST transmission mechanism. 95 is the input shaft Therefore, the drive pulley 96 is fixed. 93-1 is a drive installed in the mission case 93 97 is a hydraulic pump installed on the working part 21 side that has the boom, etc., and the hydraulic switching valve 98 is It is connected to a hydraulic cylinder 99 for lifting and lowering through. Also, 100 is installed in the hydraulic pump 97. 101 is an endless belt, and 102 is a belt clutch mechanism. 99A is made by This is an electric unit cylinder that rotates the boom on the commercial side in the left and right directions.

[0034] Therefore, in the above embodiment, the mission of the traveling section 1 is carried out by one prime mover 92. can drive the engine case 93 and the hydraulic pump 97 on the working section 21 side. And the machine While the body is moving forward and backward, the belt clutch mechanism 102 is turned off and the working section 21 is turned off. To operate, turn on the belt clutch mechanism 102 and operate the hydraulic pump 97. while moving the transmission case 93 side to the neutral position, and set the parking brake. key to bring it to a halt.

[0035]

[Effect of the idea]

As mentioned above, in this invention, when the aerial work vehicle moves, the The power of the machine is not transmitted to the working part side drive means such as a hydraulic pump, but only to the traveling part side. It is something that is transmitted. In addition, when performing various types of work using the working section, the traveling section should be Only the working part side drive means is driven without power being transmitted. therefore It is economical because the battery and fuel used to rotate the prime mover are saved. and, Although the structure is simple as a whole, it can fully demonstrate the energy saving effect. It is possible.

[Brief explanation of drawings]

FIG. 1 is an overall side view of an aerial work vehicle equipped with the present invention.

FIG. 2 is a transmission mechanism diagram showing a power transmission device according to the present invention.

FIG. 3 is a transmission mechanism diagram showing another embodiment of the power electric device.

FIG. 4 is a layout diagram showing a drive system for the aerial work vehicle.

FIG. 5 is a layout diagram showing the drive system of the aerial work vehicle.

FIG. 6 is a layout diagram showing the drive system of the aerial work vehicle.

FIG. 7 is a layout diagram showing a drive system for an aerial work vehicle.

[Explanation of symbols]

1 Running part 21 Working section 22 Transmission case on traveling section side 23 Input shaft 24 Prime mover 26A Working part side drive means 27 Belt clutch mechanism

Continuing from the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location B66F 11/04

Claims (1)

[Scope of utility model registration request] Claim 1: In an aerial work vehicle composed of a traveling section 1 and a working section 21 having a vertical lifting device, etc., a prime mover 24 is directly connected to an input shaft 23 of a transmission case 22 on the traveling section side,
In addition, the input shaft 23 and the working part side drive means such as a hydraulic pump
26A and 26A are interlocked and connected via a belt clutch mechanism 27.