JPH04138455U - Control box structure in backhoe - Google Patents

Abstract

(57) [Summary] [Purpose] The control box installed in the operating section of the backhoe was configured to be able to be opened, closed, and secured securely. [Configuration] A knob for up and down operation and a lever for locking are provided on the front of the control box.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to the structure of a control box in a backhoe. .

0002

[Conventional technology]

Conventionally, the control box was installed on the side of the backhoe driver's seat. There are some that are fixedly attached to the seat. In addition, the same control box The box is provided in a protruding manner on the side of the elevator passageway for the driver.

0003

[Problem that the idea aims to solve]

However, the control box installed on the side of the driver's seat is not fixed. Because the front part of the control box is installed in the At the same time, the driver's body is controlled by the hand-operated lever installed in the control box. There was a danger that the excavation part would malfunction due to body contact.

0004

[Means to solve the problem]

In this invention, a seat is arranged in the driver's section, and a hand control lever is placed on the side of the seat. In a backhoe equipped with a control box that has The front side of the control box can be rotated upwards, and the front side of the control box can be rotated upwards. There is a lock lever that locks the rotation of the control box and a knob for up and down operation. A control box for a backhoe characterized by having a control box and a control box located close to each other. It is intended to provide a base structure.

[0005]

【Example】

Embodiments of the present invention will be described in detail based on the drawings. In the overall side view of FIG. 1 shows a backhoe as a power working machine, and a traveling frame with a crawler traveling device 1 is shown. A swing base 3 is installed approximately in the center of the frame 2, and a swing frame 4 is placed above the base 3 on the left and right sides. It is mounted so that it can rotate freely, and the prime mover section 5 is mounted at the rear of the same frame 4, and the driving section 6 is mounted at the center thereof. A bracket 7 is provided protruding from the front end of the same frame 4, and the base end of the excavation work part B is They are installed consecutively.

[0006] This excavation work part B has a boom support 8 pivoted to the bracket 7 so as to be rotatable left and right. Then, place the main boom 9, arm 10, and bucket 11 on the support 8 in this order. Hydraulic pressure for operating the main boom, arm, and bucket Actuators 12, 13, and 14 are interposed.

[0007] Additionally, between the rotation base 3 and the rotation frame 4, a hydraulic motor 15 for aircraft rotation is provided. is interposed.

[0008] During excavation work, the above hydraulic actuators 12, 13, 14 and hydraulic motors -15, and the operation control of these hydraulic actuators is Pilot-operated hydraulic pressure is activated by operating the hand-operated levers 16 and 17 provided inside the This is done via a control valve.

[0009] As shown in FIG. 2, the driving unit 6 is located inside a cabin 19 having a door 18 on the left side. A seat 20 is provided at the rear, and left and right travel levers 21a, 21b are installed in front of the seat 20. ing. Also, on the left and right sides of the seat 20, there are The control box 22 on the left side and the operation panel 23 on the right side are located as extensions. , 24 and 25 are armrests provided on the left and right sides.

0010 In addition, the above-mentioned hand-operated lever is located in front of the control box 22 and operation panel 23. -16,17. 26 is a meter box installed at the front end of the right side operation panel 23. be.

[0011] In addition, 27 is an engine installed in the prime mover section 5, and a hydraulic pump 28 for main operation is directly connected. is connected to.

0012 In FIG. 3, 30 is a seat that supports the driver seat 20 so as to be movable and fixed in the front and rear directions. The front seat bracket 31 and the rear seat bracket 31 are mounted on both the left and right sides of the same seat mount 30. The side seat bracket 32 is fixed.

[0013] 33 is an FRP cover that constitutes the control box 22, and the inside is made of steel. It is integrally formed with an inner bracket 34 made of a plate. 35 is the rear seat bracket. It is fixed to the inner bracket 34 with a collar that fits into the control box 32. The entire structure of 22 is such that the front side 22-2 can rotate upward around the rear seat bracket 32. It has become. 36 is a fixing bolt, 37 is a fixing bolt that connects the cover 33 and the inner bracket 34 It's a bolt.

[0014] 38 also locks the control box 22 to the front seat bracket 31. The locking mechanism is provided with a locking lever 39. 40 is set on the locking lever 39. The hook portion can be freely engaged with the front seat bracket 31. 41 is rock This is a tension spring attached to the base of the lever 39. In addition, lock lever 39 is provided protruding from the front side of the control box 22.

[0015] 42 is a pressing mechanism that presses and biases the control box 22 upward; By releasing the control lever 39, the control box 22 The front side is freely rotatable around the bracket 32. 22-1 is a control box This is an arc-shaped notch groove provided inside the space 22.

[0016] 43 is a stopper shaft fitted with a return spring 44. And the same The stopper shaft 43 has its front end attached to the front seat bracket 31. The rear portion is slidably supported by a rotating plate 45. 46 is rotating plate 45 Supporting fulcrum pin, 47 is a slide body screwed onto the rear end of the stopper shaft 43, 48 is a fixing nut.

[0017] 49 is the limit switch that operates the pilot valve on and off, and 50 is the accelerator lever. be. In addition, 51 is a knob for up and down operation provided on the front side 22-2 of the control box 22. It is provided at a position close to the upper side of the locking lever 39. 52 is the locking lever. It is formed into an L-shape with a cutout hole into which a bar 39 is fitted. In addition, in C, the driver is seated in 20 seats. This is a lift passage to go to the side.

[0018] The embodiment of the present invention is configured as described above, and the driver passes through the elevator passageway C. If you enter the seat 20 side or get off from seat 20, press the control box 22. While gripping the up/down operation knob 51 and locking lever 39 protruding from the -39 upwards. Then, release the locking mechanism 38 and remove the control box. The front part of the box 22 is rotated upward to make it easier for the driver to ascend and descend.

[0019] Next, when the driver sits on the seat 20, he/she grasps the up/down operation knob 51 and pushes it downward. When pressed, the control box 22 locks the front seat bracket using the locking lever 39. It is fixed to the seat 31.

[0020] As described above, according to the above embodiment, the control button can be rotated upward on the front side. There is a locking lever on the front of the control box 22 that locks the rotation of the control box 22. 39 and the up/down operation knob 51 are placed close together, so the control box When rotating the switch 22 upward, simultaneously press the up/down operation knob 51 and the locking lever 39. The control box can be operated by holding it, therefore opening and closing the control box is secure. It is indeed possible. In addition, a locking lever is attached to the front of the control box 22. 39 and a knob 51 for up and down operation prevents erroneous operation and improves safety. It is something that

[0021]

[Effect of the idea]

According to the present invention, in the front part of the control box whose front side can rotate upward, A locking lever that locks the rotation of the control box and a knob for up and down operation are included. Since the control box is installed close to each other, when rotating the control box upward. can be operated by holding the up/down control knob and locking lever at the same time. Therefore, the control box can be opened and closed reliably. Also, A locking lever and a knob for up and down operation are provided on the front of the control box. Second, it can prevent erroneous operations and improve safety.

[Brief explanation of drawings]

FIG. 1 is an overall side view of a backhoe equipped with the present invention.

FIG. 2 is a perspective view of the operating section.

FIG. 3 is a partially sectional side view of the main parts of the present invention.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view of the same.

[Explanation of symbols]

6 Operation Department 16 Hand control lever 20 seats 22 control box 39 Lock lever 51 Up/down operation knob

Claims (1)

[Scope of utility model registration request] [Claim 1] A seat 20 is arranged in the driver section 6, and the seat 20
In a backhoe equipped with a control box 22 having a hand-operated lever 16 on the lateral side of the backhoe, the front side of the control box 22 is freely rotatable upward, and
This control box structure for a backhoe is characterized in that a locking lever 39 for locking the rotation of the control box 22 and a knob 51 for vertical operation are provided close to each other in the front part of the control box 22.