JPS60133109A - Rising, falling and supporting apparatus of working tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for adding operating functions such as left and right tilting to a lifting support device for working tools such as construction machines and snowplows.

However, it is a minimum requirement that work tools such as construction machinery and snowplows be equipped with a lifting device.

When the construction equipment is set on a snow plow, the work tool is moved laterally so that work can be done to the side of the main body, and the work tool is tilted horizontally (oljing) so that it follows the road surface well, and furthermore, it is tilted forward and backward (pitching). ) These functions are added to the lifting support device in combination as needed. Utility Model Application No. 54-6972, which is a well-known "moving device for snow removal equipment"
No. 9/Showa 5a-sqZso/Sho 54-697
No. 31 and Utility Model No. 57-50354 both have a structure that has a horizontally sliding part and a cylinder that is a lateral force input device as a moving device, and the purpose is to perform snow removal work of the side blade from the snowplow body. It does not have a left/right tilt function to make it follow the road surface. No. 52-54920 “Snow Removal!
The "moving mechanism of snow removal equipment" has individual fluid cylinders that function for the purposes of lateral movement, left-right tilting, and forward-backward tilting, and is a collection of structures with each individual function. There is. Utility Model Application Publication No. 57-101161 "F Working Tool Support Device" has one common rotating shaft with another device added. All of these cases add other necessary equipment in addition to the lifting support system. Therefore, it tends to become more complicated and its weight increases accordingly. In recent years, it has been desired to increase the size of working tools due to usage requirements, but the weight increase of working tools is restricted due to the restriction on the wheel load on the road surface, and a lightweight structure is desired, and the structure of the above-mentioned example has a problem. Furthermore, it is not preferable that the moving device has a sliding portion because it tends to become stiff. Particularly in the case of snowplows, when snow builds up and freezes, it is necessary to remove it, so it is desirable to avoid this.

The purpose of the present invention is to easily add multi-functions such as lateral movement, left/right tilting, and front/back tilting with a simple and lightweight structure that requires only a few functional elements to be added to the original elevating and lowering support structure of the work tool. The purpose of the present invention is to provide a lifting support device for tools.

The present invention relates to a lifting support device for a working tool that connects a support and a working tool with an upper link and a lower link, and is provided with a forced input device for lifting and lowering that acts between the support and the working tool. All of them have a structure that allows them to swing not only vertically when going up and down, but also horizontally, and each of the upper and lower links is equipped with a lateral force input device that acts between the support and the work tool. Alternatively, either the upper link or the lower link -1 can swing up and down as it goes up and down and has a rigid support structure in the lateral direction, and the other link -1 can swing up and down as it goes up and down. The structure is such that it can swing laterally, and the side of the upper link and lower link that can swing laterally is provided with a lateral force input device that acts between the support and the work tool. It is said that

Hereinafter, details of one embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is a side view showing the entire construction machine or snowplow that is the object of the present invention, in which 1 is a working tool, 2 is a vehicle, and between them there is a lifting support device consisting of an upper link 3 and a lower link 4. , a forced manual tool 5 for lifting and lowering the working tool 1, such as a hydraulic cylinder, is provided.

FIG. 2 is a perspective view showing the most basic embodiment of the first invention, in which 6 forms a support body for supporting the working tool 1 on the chassis of the vehicle 2. The two upper links 7-8 and the lower link 9110 are both swingable in the lateral direction, and both the pivot point with the work tool and the pivot point with the support body have a ball-joy structure. 11 is a lateral forced input tool on the upper link side; 12 is a lateral forced input tool on the lower link side; There is. Each pivot point is a ball joint structure. Reference numeral 5 denotes a forced input tool for lifting and lowering, one end of which is pivoted directly to the support and the other end pivoted directly to the work tool. Both contact points are the #1 selection of ball joints. The forced manpower tools 11 and 12 in the lateral direction and the forced manpower tool 5 for raising and lowering the work tool are also hydraulic cylinders. When the lateral forced manpower tool 11112 is inserted evenly, the upper links 7 and 8 and the lower links 9 and 1O swing in the lateral direction by the same amount.

The work tool is moved laterally in the direction of arrow A.

When the horizontal forced manpower tool 11 is extended and the forced manpower tool 12 is retracted, the upper links 7 and 8 swing in the direction of arrow A, 10,000 m, and the lower links 9 and 10 swing in the direction opposite to arrow A. , the working implement will move laterally in different directions at the upper and lower parts, rotate in the direction of arrow B, and give the working implement a left-right inclination. When the compulsory manual tool 5 for raising and lowering the work tool is retracted,
All of the upper links 718 and lower links 718 and 10 are rotated upwardly and the implement is raised. It goes without saying that an operation opposite to that described above can be performed by controlling the hydraulic pressure to each forced input tool, and a combined operation is also possible. That is, work is performed by moving one work tool laterally at a high position. The ax can be freely selected, such as working in a low position, tilting from left to right and following the road surface. In this example, in addition to the upper link, lower link, and forced input device for raising and lowering the work tool, which are necessary for the lifting support structure, a simple lateral forced input device is added to each of the upper link and the lower link. The structure allows for multiple functions such as those mentioned above. In this embodiment, a total of four links, two upper links and two lower links, are used to connect the support and the work tool.

For this reason, when the four pivot points on the support side are in one plane when vertical displacement is applied and left/right tilt is taken, or when lateral displacement and left/right tilt are made simultaneously, if the four pivot points on the support side are in one plane, The four pivot points cannot be located in one plane because there is a difference in cosine amount due to the difference in swing angle of each link. In other words, a phenomenon occurs in which one working tool is twisted. However, the difference in the amount of cosine is small.

It can be put into practical use by giving elasticity to working tools, but its placement is necessary during design. FIG. 3 is a perspective view showing an embodiment of the second invention, in which a variable length link 13 is provided as an upper link between a chassis serving as a support and a working tool 10. A hydraulic cylinder is used for the variable length link, and both ends are pivotally connected to the support and the implement with ball joints.

Reference numeral 16 denotes a lateral force input tool, which is a hydraulic cylinder with ball joints at both ends and is directly pivotally connected to the support and the work tool.

The lower link mechanism consists of a lower link plate 14 and a lower link 15 that are triangular in plan view, and pivot points 1aA11. ! It is pivotally connected to a support 6 at two locations on iB and can only swing in the vertical direction.

Tip pivot point 14 of the lower link plate 14 to which the work tool 1 is pivoted
C is laterally rigid. The link 15 has the purpose of keeping the support body 6 and the work tool parallel, and both ends thereof are pivotally connected to the support body and the work tool. Reference numeral 17 denotes a forced input device for lifting and lowering, whose upper end is pivoted to a support and the lower end is pivotally connected to the protruding portion 14D of the link plate 14, and the lifting force is transmitted to the working tool 1 via the tip pivot point 14C of the lower link plate 14. be done. Both of the lateral forced input tools 9 and the forced input tools for lifting and lowering are hydraulic cylinders.

When the lateral force tool 16 is extended, the pivot point with respect to the working tool 1 moves in the direction of arrow A. However, the lower link plates 1 and 4 prevent the work tool 1 from moving laterally. Therefore, one working tool is rotated in the direction of arrow B and tilted left and right. When the variable length upper link (hydraulic cylinder) 13 is extended, the upper part of the work tool 1 moves forward, but the lower part moves forward.
Since it is held by the lower link 15, it does not move forward.

Therefore, the working tool 1 is rotated in the direction of arrow C and tilted. The lifting and lowering functions are the same as in FIG. In this embodiment, in addition to lifting and lowering, functions of left-right tilting and front-back tilting are added. Since the lower end of the forced manual tool for lifting and lowering is pivotally connected to the protrusion 1dD of the lower link plate 14, the structure of the pivot bracket on the work tool side is simple and has the advantage that it does not require much space. . FIG. 4 is a perspective view showing another embodiment of the present invention. Compared to FIG. 3, the lower link structure is different from the one shown in FIG. Consists of swingable lower link 18119.

20 is a forced input device in the horizontal direction. By simultaneously extending the force tool 16 in the upper lateral direction, the tool moves laterally in the direction of arrow A, as in the case of FIG. By extending the lateral forced manpower tool 16 and contracting the forced manpower tool 20, the work tool rotates in the direction of arrow B and tilts left and right as in the case of FIG. The longitudinal inclination and elevation are the same as in the case of FIG. Note that both ends of the lower link 18 are ball joints, and the pivot point 18A for the forced input device for lifting and lowering has a circular bottle structure to ensure stability of the lower link 18. Both ends of the lower link 19 are ball joints. In this example, horizontal movement, left and right tilting,
This is an elevating support device that has all the functions of forward and backward tilting. FIG. 5 is a perspective view showing another embodiment of the present invention, in which the upper link 21 has a turnbuckle structure and variable length, and a pivoting portion 21 for a lateral forced input device 22 is located in the middle of the link.
I have an A.

The other end of the forced manpower tool 22 is directly pivotally connected to the support 6. The lower link mechanism is composed of lower links 23 and 24, and both links are connected at a mutual hip pivot point 25, so that the overall structure is on the lateral pressure side. Although the structure is different from that of the lower link in FIG. 3, it has the same function, and the two have different angle structures selected from various design conditions. Top link 2
By manually operating turnbuckle 1, the front and rear inclinations can be adjusted to achieve the optimal condition with the road surface. By extending the lateral force tool 22, it is possible to give the work tool a left-right inclination as in the case of FIG. The lifting and lowering is the same as in the case of FIG. In this embodiment, a method is adopted in which the upper link is made to have a variable structure to provide longitudinal inclination, which has not been done conventionally, and the structure is not particularly complicated. The present invention has the advantage that the conventional link can be made variable in length and tilted forward and backward, making it easy to use. FIG. 6 is a perspective view showing another embodiment of the present invention, in which the upper link forms an isosceles triangle with hydraulic cylinders 26 and 27, and the length can be changed by extending both of the hydraulic cylinders 26 and 27. By extending the hydraulic cylinder 26 and extending the hydraulic cylinder 27, it has the same effect as a forced input tool in the lateral direction and causes the work tool to tilt from side to side. can give. Two lower links 28I29S are diagonally arranged [L] It has a structure that is rigid in the lateral direction and released from the pattern buckle rod 30. By adjusting the rod length with a turnbuckle, it is possible to correct errors in the lateral position of the work tool.

Each of the hydraulic cylinders 26 and 27 has a ball joint at both ends, and is a link that can independently swing in the discharge lateral direction, and can be interpreted as a lateral force input device. This embodiment is an effective structure when the frequency of operations for tilting forward and backward and tilting left and right are similar. Although a hydraulic cylinder is used as the forced input device in the embodiments shown in FIGS. 2 to 6, it may be replaced with, for example, an electric thruster. Also.

It is also possible to have a configuration in which the structure of the upper link and the structure of the lower link are exchanged.

In contrast to the general lifting support device that has an upper link and a lower link, which is used as a work tool for construction machinery, excavators, etc., the link has a structure that allows it to swing laterally, and a lateral forced input device is used. It has a simple structure that only needs to be added, and has the advantage of being lightweight due to the fact that there are few added functional items.In addition to the lifting function, it can easily provide multi-functions such as horizontal movement and left/right tilting of the work tool. This structure has the advantage that the structure in which the upper link or the lower link is made variable in length and tilts back and forth to the working tool, which has been implemented since America, can be easily applied.

[Brief explanation of drawings]

Fig. 1 is a side view showing the entire construction machine or snow removal trough which is the object of the present invention, Fig. 2 is a perspective view showing a basic embodiment of the first invention, and Fig. 6 is a basic view of the second invention. FIGS. 4-5 and 6 are perspective views showing other embodiments of the present invention. 1101 Working tools% 2. ,,Vehicle-5,,Forcible input device for lifting/lowering, 7/821. Above link, 9/10. ,. Below link, 11/12. ,,lateral forced input tool. 13.,,Variable length link, 1a1. , Down: /ri board, 1
5,,,bottom link,16. ,, Lateral forced input tool-1
7. Forced input device for lifting and lowering. Patent applicant Nippon Snow Removal Co., Ltd. 4f! Farmhouse Figure 1 Figure 2 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A support and a working tool are connected by an upper link and a lower link,
In a lifting support device for a working tool that is equipped with a forced input device for lifting and lowering that acts between the support and the working tool, all of the upper and lower links can be swung horizontally as well as vertically during lifting. 1. A lifting and lowering support device for a working implement, characterized in that the upper link and the lower link each include a lateral force input device that acts between the support body and the working implement. 2. Connect the support and work tool with the upper and lower links,
In an elevating support device IC for a work implement that is equipped with a strong jtill input tool for elevating and lowering that acts between the support body and the work implement, either the upper link or the lower link -1 can swing in the vertical direction as it goes up and down. The support structure is rigid in the horizontal direction, and the other -1 has a structure that allows it to swing horizontally as well as vertically as it goes up and down, and the upper link and lower link can swing laterally. 1. A lifting and lowering support device for a working implement, comprising a lateral forced input device acting between the support body and the working implement on the upper side thereof.