JPH0637270U - Tower Yada Tower Rest - Google Patents

Abstract

(57) [Summary] [Purpose] Conventionally, when a work vehicle for tower yards tilts and stores the tower while traveling, the height of the front part of the tower is set so as not to obstruct the driver's forward vision. There is. Since this height is considerably higher than the height of the operator, it is difficult to perform the maintenance work such as maintenance and inspection and repair of the tower with the tower tilted. This problem is solved. [Structure] In the present invention, the tower rest is formed by dividing the upper support frame body into the lower strut bodies, and in order to reduce the height of the tower front portion which is tilted during maintenance work of the tower front portion, the lower strut is formed. The lower end of the upper support frame is connected to the upper end of the body so that it can be bent and rotated. Alternatively, the upper support frame is connected to the lower support column of the tower rest, which is formed in a divided manner, so as to be capable of expanding and contracting in the vertical direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tower rest that is installed in a construction machine for tower yaders, work vehicles, and the like that constitute a cable crane.

[0002]

[Prior art]

 FIG. 6 is a side view of a work vehicle for a tower yader equipped with a conventional tower rest 1. In the figure, 2 is a vehicle body of a work vehicle, 3 is a tower base fixed to the vehicle body 4, 4 is a hinge pin that connects the upper end of the tower base 3 to the lower end of the tower 5 so that the lower end can be bent and rotated. Reference numeral 6 is a hydraulic cylinder for bending and rotating the tower 5, and 7 is a driver's seat. FIG. 7 is a front view of a main part viewed from A of FIG. As shown in FIG. 6, in the tower yader, the tower 5 is provided on the vehicle body 2 of the work vehicle so that the tower 5 can be bent and rotated in the front-rear direction (the direction of the arrow a), and the tower 5 is erected upright (in a state indicated by a virtual line B) when performing the crane work. ) When the vehicle body 2 is moved and fixed, the tower 5 is tilted to a substantially horizontal state (a state shown by a solid line C) in a side view, and the front portion of the tower 5 is fixed to the front portion of the vehicle body 2 by a tower rest 1. Is supported by.

[0003]

[Problems to be solved by the device]

 When a working vehicle for a tower yard travels while tilting the tower 5, the front part of the tower does not obstruct the driver's forward view (including obliquely upward view) (see FIGS. 6 and 7). The height of the dimension H is set). Since this height is considerably higher than the height of the worker, it was difficult to perform maintenance work such as maintenance and inspection and repair of the tower with the tower tilted. The present invention aims to solve the above problems.

[0004]

[Means for Solving the Problems]

 In the present invention, the tower rest provided in the front part of the vehicle body of the tower yard work vehicle is divided into the upper support frame and the lower support, and the height of the front part of the tower is tilted during maintenance work of the front part of the tower. In order to reduce the height, the lower end of the upper support frame is connected to the upper end of the lower strut so that it can be bent and rotated. Alternatively, the upper support frame is connected to the lower support column of the tower rest, which is formed separately, so that the upper support frame can be expanded and contracted vertically.

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a posture in which a construction machine for a tower yada equipped with a tower rest 8 according to the present invention tilts and stores a tower 9 and travels. In the figure, 10 is the upper revolving structure of the construction machine, 11 is the lower traveling structure, 6'is a hydraulic cylinder, and H1 is the height of the front part of the tower 9 which is tilted when the construction machine travels. FIG. 2 is a detailed view of the tower rest 8 in the portion B of FIG. In the figure, 12 is an upper support frame of the tower rest 8, 13 is a tower support plate of the upper support frame 12, 14 and 15 are brackets provided at the lower end of the upper support frame 12, and 16 are lower support columns. , 17 and 18 are brackets provided on the upper ends of the lower strut bodies 16, respectively, 19 is a flange portion which fixes and attaches the lower strut bodies 16 to the upper revolving body 10, and 20 is a bracket to which the brackets 14 and 17 are pivotally attached. A hinge pin 21 is a bolt member that fastens and fixes the brackets 15 and 18. FIG. 3 is a view seen from CC in FIG. In the figure, reference numeral 21 is a seat plate attached to the tower receiving plate 13 for contacting the tower 9.

Next, the structure of the tower rest 8 according to claim 1 of the present invention will be described with reference to FIGS. According to the present invention, the tower rest 8 provided at the front part of the upper swing body 10 of the construction machine is divided into the upper support frame body 12 and the lower support body 16, and is formed to maintain the front part of the tower (9) during maintenance work. In order to lower the height of the front part of the tilting tower (9), the lower end part of the upper support frame body 12 is connected to the upper end part of the lower strut body 16 via hinge pins 20 so as to be capable of bending and turning. Configured.

Next, the operation of the tower rest 8 according to claim 1 of the present invention will be described. When the construction machine tilts and stores the tower 9 and travels, it takes the posture shown in FIG. That is, the lower support 16 of the tower rest 8 and the upper support frame 12 are placed in series in an upright state, and the tower 9 is supported by the tower receiving plate 13 at the upper end thereof. Therefore, the height H1 of the front part of the tower (9) is considerably high, and it is possible to secure the driver's forward visibility when the construction machine travels. Next, when the construction machine stops traveling and maintenance work is performed on the front part of the tower (9), the tower 9 is pivoted slightly upward, and the bolt member 21 (shown in FIG. 2) is loosened and removed. Then, the upper support frame 12 is manually rotated in the direction of arrow D (indicated by an imaginary line arrow) about the hinge pin 20. Then, the tower 9 is operated to tilt down to the required lower position. FIG. 4 is a partially cutaway side view showing the posture of the construction machine when performing maintenance work on the front part of the tower (9). Since the height of the front part of the tower (9) is lowered to a considerably low height H2, maintenance work can be easily performed.

Next, FIG. 5 is a front view of the tower rest 22 according to claim 2 of the present invention. In this tower rest 21, in order to reduce the height of the front part of the tower (9), the upper support frame body 23 and the lower support body 24 are relatively slidably moved in the vertical direction (axial direction which is the longitudinal direction). It is formed so as to be divided into two parts, and the two parts 23 and 24 are connected by a hydraulic cylinder 25, and the hydraulic cylinder 25 is expanded / contracted so that the height of the tower receiving plate 26 of the support frame 23, that is, The height of the front part of the tower (9) can be changed. Accordingly, when the tower 9 is tilted and stored for traveling, the hydraulic cylinder 25 is extended to increase the height h1 of the tower receiving plate 26 (the height from the mounting surface E of the upper swing body 10). , The front of the tower (9) can be raised. When performing maintenance work on the front part of the tower (9), the hydraulic cylinder 25 can be reduced in size to lower the height h2 of the tower receiving plate 26 and lower the front part of the tower (9). . Therefore, the function of the tower rest 22 is the same as that of the tower rest 8 of claim 1.

[0009]

[Effect of device]

 When a work vehicle for tower yards is tilted and stored while traveling, the front part of the tower is set to a height that does not obstruct the driver's forward vision. Since this height is considerably higher than the height of the operator, it was difficult to perform the maintenance work such as maintenance and inspection and repair of the tower with the tower tilted. However, in the present invention, the tower rest provided on the front part of the vehicle body of the tower yard work vehicle is divided into the upper support frame body and the lower support column body, and the tower front part which is tilted during maintenance work on the front part of the tower is formed. In order to lower the height, the lower end of the upper support frame is connected to the upper end of the lower support so that it can be bent and rotated. Alternatively, the upper support frame is connected to the lower column of the tower rest, which is formed separately, so that it can be expanded and contracted vertically. Therefore, when the tower is stored in a tilted position for traveling, it is possible to create a long, upright state in which the lower support column of the tower rest and the upper support frame are connected in series. Therefore, the height of the front part of the tower can be made considerably high to ensure the forward view of the occupant when the construction machine travels. Next, when the construction machine stops traveling and performs maintenance work on the front part of the tower, the upper support frame is bent and rotated with respect to the lower support column of the tower rest, or is contracted. As a result, the tower can be tilted down to the required lower position, and maintenance work at the front of the tower can be performed easily. Therefore, in the construction machine for tower tower equipped with the tower rest and the work vehicle of the present invention, the maintainability of the tower can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing a traveling posture of a construction machine having a tower rest according to claim 1 of the present invention.

FIG. 2 is a detailed view of a tower rest in a portion B of FIG.

FIG. 3 is a diagram viewed from CC in FIG.

FIG. 4 is a partially cutaway side view showing a posture of the construction machine in FIG. 1 during maintenance work.

FIG. 5 is a front view of the tower rest according to claim 2 of the present invention.

FIG. 6 is a side view of a work vehicle for a tower yarder having a conventional tower rest.

FIG. 7 is a front view of a main part viewed from A of FIG.

[Explanation of symbols]

 1,8,22 Tower rest 2 Vehicle body 4,20 Hinge pin 5,9 Tower 6,6 ', 25 Hydraulic cylinder 10 Upper revolving structure 11 Lower traveling structure 12,23 Upper support frame 13,26 Tower receiving plate 16,24 Lower part Prop body

Claims (2)

[Scope of utility model registration request] 1. A tower is provided on a vehicle body of a construction machine, a work vehicle or the like so as to be capable of bending and turning in the front-rear direction, the tower is fixed upright when performing crane work on a tower yard, and the tower is substantially laterally viewed when the vehicle body is moved. Tilt it horizontally,
It is a tower rest on the front of the vehicle body that supports the front part of the tower, and the tower rest is divided into an upper support frame body and a lower support body, and is tilted during maintenance work on the front part of the tower. In order to reduce the height of the front part of the tower, the lower end of the upper support frame is connected to the upper end of the lower strut body so that the lower end of the upper support frame can be bent and rotated. 2. A tower is provided on a vehicle body of a construction machine, a work vehicle or the like so as to be capable of bending and turning in the front-rear direction, the tower is fixed upright when performing crane work on a tower yader, and the tower is substantially laterally viewed when the vehicle body is moved. Tilt it horizontally,
It is a tower rest on the front of the vehicle body that supports the front part of the tower, and the tower rest is divided into an upper support frame body and a lower support body, and is tilted during maintenance work on the front part of the tower. In order to reduce the height of the front part of the tower, an upper support frame is connected to the lower support so as to be capable of expanding and contracting in the vertical direction.