JPS6340533Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a stand device for a work machine.

Conventionally, one method for connecting large and heavy work equipment that is removably connected to the body of a self-propelled vehicle such as a mobile agricultural machine is to use a rotatable stand attached to the work equipment to stand it upright. There is a method in which the connecting parts of the working machine are lifted up, the machine body is moved back and forth, the positions of the connecting parts between the working machine and the machine body are aligned, and then the connecting parts are connected using a connecting member. The rotational movement of the stand provided on such a work machine is regulated by a pin or the like. In other words, when fixing the stand in an upright position, align the pin holes formed in the stand and the frame of the work equipment and insert the pin, and when storing the stand, remove the pin and place the stand in the storage position. After rotating it, align the pin hole in the stand with the other pin hole in the frame and insert the pin. For this reason, it takes time to align the pin holes with each other, especially when setting up a stand for a work machine that is grounded. Since it requires pieces of wood to support it, it takes a lot of effort and effort.

This invention was devised in view of the above points, and the purpose is to provide a stand device for a work machine that can extremely easily fix the stand in an erected state and in a stored state. be.

This idea consists of installing a tie bar connecting the pair of left and right connecting arms on the self-propelled vehicle side of the pair of left and right connecting arms that connect the body of the self-propelled vehicle and the work equipment, and installing pipes and ground plates at the upper and lower ends of each arm. The pipe of the stand is fitted onto the tie bar so that the stand can be freely rotated in a vertical plane about the tie bar, and the stand is provided with a pipe on both sides along the direction of rotation at a position away from the center of rotation of the stand. A spring hanging portion is provided on at least one of the surfaces, and a spring mounting portion that rotatably supports a substantially semicircular arc-shaped hook is provided on either the front or rear in the rotation direction away from the rotation center of the stand. A spring that urges the stand to rotate is provided between the free end of the hook and the spring hanging portion, and a straight line extending from the spring attachment portion to the center of rotation of the stand is drawn. a first regulating member that contacts the stand and biases the stand downward to maintain the upright position; and a second regulating member that contacts the stand and fixes the stand in a substantially horizontal predetermined position. A member is provided,
At least one of the regulating members extends from the tie bar surface close to both sides of the pipe of the stand fitted onto the tie bar to regulate the movement of the stand in the tie bar axial direction, thereby reducing the tensile force of the spring and the first The stand can be easily fixed in a downwardly oriented state by the regulating member, and the stand can be easily fixed in a stored state by the tensile force of the spring and the second regulating member. Furthermore, the movement of the tie bar of the stand in the axial direction can also be restricted by the restriction member.

An embodiment of this invention will be described based on the drawings. A front blade 2, which is a working machine, is detachably connected to the front of a body 1 of the mobile agricultural machine.
A pair of left and right connecting arms 3 of the front blade 2 are connected at their rear portions by a tie bar 4 having an axis in the left and right direction. A pipe 5 is rotatably fitted onto the center portion of the tie bar 4 in the left-right direction, and one end of a pipe 6 having an axis perpendicular to the axis of the pipe 5 is welded to the outer peripheral surface of the pipe 5. A nut 7 is welded to the other end. A bolt 8 which can be inserted into and taken out of the pipe 6 is screwed into the nut 7, and a nut 9 and a ground plate 10 are welded to the tip of the bolt 8. A stand 11 is constituted by these pipes 5, 6, nuts 7, 9, bolts 8, and ground plate 10. A spring support plate 12 extending rearward is fixed to the tie bar 4, and a pin hole 13 serving as a spring attachment part is formed at the tip thereof. The pipe 6 also has a spring support plate 14 extending laterally at a position close to the nut 7.
is fixed, and a spring locking hole 15, which is a spring hanging portion, is formed at its tip. A spring 18 is stretched between the tip of a hook 17 rotatably locked in the pin hole 13 by a pin 16 and the spring locking hole 15. That is, the spring 18 is stretched between the spring locking hole 15 and the pin hole 13 via the hook 17. Note that the hook 17 is curved into a substantially semicircular shape, and is shaped so that the hook 17 and the tie bar 4 do not interfere with each other when the hook 17 rotates forward. In addition, the pin hole 1
3 and the spring locking hole 15 are provided in the same vertical plane. However, the tie bar 4 is
Two letter-shaped regulating members 19 and 20 are fixed across the pipe 5, and are fixed to the tie bar 4 of the pipe 5.
movement in the axial direction is restricted. These regulating members 19 and 20 are provided one each on the upper and lower sides of a straight line extending from the axis of the tie bar 4 seen from the pin hole 13, and the first regulating member 19 located below is connected to the pipe 6 of the stand 11 when the stand 11 is in a vertical position facing downward, and is provided at a position to restrict rearward rotation of the stand 11 due to the tensile force of the spring 18. In addition, a second regulating member 2 located above
0 is provided at a position that connects to the pipe 6 of the stand 11 and restricts upward rotation of the stand 11 due to the tensile force of the spring 18 when the stand 11 is in a substantially horizontal state.

In such a configuration, the front blade 2
When attaching or detaching the front blade to the fuselage 1, stand the stand 11 upright and perform the attachment/detachment work, and after attaching the front blade 2 to the fuselage 1, store the stand 11 in a folded state to prevent interference between the stand 11 and the ground. do. When the stand 11 is to be erected, the stand 11 is rotated downward from the stored state shown in FIG.
From the state shown in FIG. 1 until the spring locking hole 15 is on the extension of the straight line connecting the pin hole 13 and the center axis of the tie bar 4, the tensile force of the spring 18 rotates the stand 11 upward. It is necessary to apply a force because the stand 11 is acting, but when the extension line of the spring 18 is passed, the tensile force of the spring 18 acts in a direction that causes the stand 11 to rotate downward. Therefore, the stand 11 automatically rotates downward and is fixed in an upright downward position where the pipe 6 is joined to the regulating member 19. In this way, the stand 11 can be fixed in an upright position very easily by the tension of the spring 18 and the restriction of rotational movement by the restriction member 19.

Next, when storing the stand 11, the stand 11 is rotated upward from the state shown in FIG. From the state shown in FIG. 2, until the spring locking hole 15 is on the extension of the straight line connecting the pin hole 13 and the center axis of the tie bar 4, the tensile force of the spring 18 will rotate the stand 11 downward. It is necessary to apply a force because it is acting, but when the extension line is passed, the tensile force of the spring 18 acts in a direction that causes the stand 18 to rotate upward. Therefore, the stand 11 automatically rotates upward and is fixed in a substantially horizontal state where the pipe 6 is joined to the regulating member 20. In this way, stand 11
Fixation in the housed state can be done extremely easily by the tensile force of the spring 18 and the restriction of rotational movement by the restriction member 20.

Further, the height of the stand 11 can be easily adjusted by rotating the bolt 8 around its axis and screwing it into the pipe 6 or pulling it out from the pipe 6.

In this embodiment, the spring 18 is tensioned between the pin hole 13 and the spring locking hole 15 via the hook 17.
If the spring 18 and the spring locking hole 15 are provided outward from the end of the tie bar 4 to prevent interference between the spring 18 and the tie bar 4, the pin hole 13 and the spring locking hole 15 will be The spring 18 may be directly stretched between them.

This idea includes a spring that selectively biases the stand, which is rotatable in a vertical plane on the work machine, upwardly and downwardly, as described above, and the spring biases the stand downwardly. When the stand reaches an upright position, its rotational movement is restricted by the first regulating member, making it extremely easy to fix the stand in the upright position. When the stand reaches a predetermined position by being biased around it, its rotational movement is restricted by the second regulating member. This has the effect that the movement of the stand in the left and right directions can also be restricted by the restriction member.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a partially cutaway side view showing the front blade connected to the mobile agricultural machine and the stand stowed, and Figure 2 is a partially cutaway side view showing the front blade removed from the mobile agricultural machine and the stand erected. The side view and FIG. 3 are enlarged perspective views of the stand in an erected state. 1... Body, 2... Front blade (work equipment), 3... Connecting arm, 4... Tie bar, 5...
...Pipe, 10...Ground plate, 11...Stand,
13...Pin hole (spring mounting part), 15...
Spring locking hole (spring hanging part), 17...
...Hook, 18...Spring, 19-20...
Regulatory components.

Claims (1)

[Scope of utility model registration request] A tie bar connecting the pair of left and right connecting arms is installed on the self-propelled vehicle side of the pair of left and right connecting arms that connect the body of the self-propelled vehicle and the work equipment, and a stand is provided with a pipe and a ground plate at the upper and lower ends, respectively. The pipe is fitted onto the tie bar so that the stand can be freely rotated in a vertical plane about the tie bar, and at least one of both sides of the stand along the rotation direction at a position away from the rotation center of the stand is provided. A spring hook is provided on one side of the stand, and a spring mounting portion that rotatably supports a substantially semicircular arc-shaped hook is provided on either the front or rear in the rotation direction away from the center of rotation of the stand, and the hook is free. A spring for biasing the stand to be rotatable is provided between the end and the spring hanging part, and a straight line extending from the spring fitting part to the center of rotation of the stand is sandwiched between the ends and the spring hanging part. A first regulating member that comes into contact with the stand to bias the stand downward and maintain it in an upright state; and a second regulating member that comes into contact with the stand and fixes the stand in a substantially horizontal predetermined position. A stand for a work machine, wherein at least one of the regulating members extends from a tie bar surface close to both sides of a pipe of the stand fitted onto the tie bar to regulate movement of the stand in the tie bar axial direction. Device.