JPH04127126U - Cargo handling equipment such as roll bales - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] It is possible to maintain a stable clamping state in response to changes in the diameter of a cylindrical object such as a roll bale. [Structure] A main frame 2 that is attached to a front loader of a tractor, a fixed arm 3 that is fixed to one side of the main frame 2 and supports a part of the outer peripheral surface of a cylindrical object B such as a roll bale, and the main frame. 2
A rotating arm 6 is pivotally supported on the other side and driven to open and close with respect to the fixed arm 3, and a rotating arm 6 is rotatably supported at a position displaced from the center via a support shaft 14. , the cylindrical object 14
It is characterized by comprising a support arm 8 which holds the outer circumferential surface of the support arm 8 between the fixed arm 3 and the fixed arm 3.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is for cargo handling for holding cylindrical objects such as roll bales for moving and transporting. Regarding work equipment.

0002

[Conventional technology]

French patent specification No. 2,628,088 describes a cylindrical shape like a roll bale. Objects rotated approximately 90 degrees and stacked or placed next to each other on a flat surface A cargo handling machine that can perform the following is disclosed.

0003 As shown in Fig. 6, this work machine is equipped with a front loader (a) of a tractor. A frame m, a fixed holder n fixed to this frame m, and an axis o to the frame m. The opening/closing holder p is rotatably supported via the opening/closing holder p, and the opening/closing holder p is driven to open/close. It mainly consists of a hydraulic cylinder q, and a fixed holder n and an opening/closing holder p are connected to the object B. An object in which tractors are arranged in a row forming an arc of approximately 270 degrees when gripped. Do not hit the contact surface of the adjacent object B when facing at a right angle to the row of B. It looks like this.

0004

[Problem that the idea aims to solve]

By the way, the roller balers used to form roll bales range from those for high-horsepower tractors to those for low-power tractors. There are several types, including those for horsepower tractors, and they vary in size (outer diameter is 0.9 mm) depending on the type. A roll bale of ~1.5 m and a length of 0.9-1.2 m is formed.

[0005] However, in the above working machine, the fixed arm and the opening/closing arm have a predetermined radius of curvature. The structure is such that the opening/closing arm opens and closes using a single shaft as a fulcrum. , when attempting to process a roll bale larger than its radius of curvature, the fixed arm or The tip of the opening/closing arm will hold the roll bale, creating a stable gripping condition. In addition to not being able to maintain the condition of the roll bale, the roll bale may become deformed or wrapped around the outer circumference of the roll bale. There is a problem in that it may cause damage to the film being used. It also handles small roll bales. When attempting to handle the roll bale, the outer periphery of the roll bale may be held within a range exceeding 270 degrees. , when the fixed arm and opening/closing arm pinch or release the roll bale. There is a problem in that the film comes into contact with the outer periphery of an adjacent roll bale and damages the film.

[0006] Therefore, the purpose of this invention is to respond to changes in the diameter of cylindrical objects such as roll bales. We provide cargo handling equipment such as roll bales that can maintain stable clamping conditions. There are many things.

[0007]

[Means to solve the problem]

To achieve the above purpose, the present invention is installed on the front loader of a tractor. A main frame and a part of the outer peripheral surface of a cylindrical object such as a roll bale that is fixed to one side of the main frame. A supporting fixed arm and a rotating arm that is pivoted to the other side of the main frame and is driven to open and close relative to the fixed arm. and a position displaced from the central portion is rotatably supported on the rotating arm via a support shaft, and a support arm that holds the outer peripheral surface of the cylindrical object between the fixed arm and the fixed arm. Features.

[0008]

[Effect]

A fixed arm is provided on one side of the main frame, and a support arm is rotatably provided on the other side via a rotating arm. , the support arm comes into contact with the circumferential shape of the cylindrical object, ensuring stable clamping. state can be maintained, and deformation given to the cylindrical object can be minimized.

[0009] In addition, since the pivot arm is pivoted at a position displaced from the center of the support arm via a support shaft, , the length of the support arm protruding toward the tip side can be selectively adjusted, allowing for large or small diameter Depending on the diameter of the cylindrical object, the maximum It becomes possible to effectively clamp the circumferential surface of the target cylindrical object within a maximum range.

0010

【Example】

Hereinafter, one embodiment of the present invention will be described in detail based on the accompanying drawings.

[0011] In Figure 1, a is a front loader attached to a tractor T. The controller a has an arm c that can be rotated up and down using an axis b as a fulcrum, and a shaft at the tip of this arm c. A frame e rotatably supported via d, and a hydraulic cylinder f that raises and lowers the arm c. and a hydraulic cylinder i that rotates the frame e via the bracket g and rod h. It is mainly composed of

0012 The frame e of this front loader a has a cylindrical object, for example, a roll bale B. A bale gripper 1, which is a cargo handling machine for carrying out work, is fastened. This base The gripper 1 has a main frame 2 having a substantially rectangular shape, and one side of the main frame 2 (in the direction of movement As shown in Figure 2, a fixed arm 3 supporting one side of the roll bale is fixed to the left side). ing. This fixed arm 3 connects the tips of a pair of upper and lower bending rods 3A, which are dogleg-shaped in plan, to the vertical rod 3. A roller 3C is rotatably fitted to this vertical rod 3B. Note that 4 is a reinforcing plate.

[0013] On the other side of the main frame 2 (on the right side in the direction of travel F), there is a bracket as shown in Figures 2 to 4. 5 are provided in pairs in the vertical direction, and these brackets 5 are connected by a plate 6B. A rotating arm 6 consisting of a pair of upper and lower horizontal rods 6A is rotatably attached to a shaft 7. . A cylindrical rod 6C serving as a bearing is placed at the tip of the rotating arm 6 so as to straddle both horizontal rods 6A. It has been fixed.

[0014] The distal end of the rotating arm 6 is located opposite to the fixed arm 3 and opposite to the roll bail B. A support arm 8 supporting the side is rotatably provided via a support shaft 14. this support The arm 8 connects a pair of upper and lower curved rods 8A having a planar arc shape and both ends of both curved rods 8A. It is mainly composed of a vertical rod 8B, and a roller 8C is rotatably fitted in the vertical rod 8B. There is.

[0015] The curved rod 8A has a radius of curvature approximately halfway between the maximum diameter and the minimum diameter of the roll bale B to be handled. It is formed of. In addition, the curved rod 8A has a support shaft 1 at a position displaced from its center. A pair of upper and lower bearings 8D and a through hole 8E are formed through which the bearings 8D and 4 are inserted. A support shaft 14 is inserted across the through hole 8E and the cylindrical rod 6C of the rotating arm 6. . Note that the support shaft 14 can be inserted and removed by pinning, etc. As shown in Figure 5, the support arm 8 can be replaced by flipping it upside down. It has become Noh.

[0016] In order to limit the outward opening of the tip of the support arm 8 to a certain range, the bearing part 8D has a The abutting portion 8F has a locking shaft 6F that locks the abutting portion 8F on the horizontal rod 6A of the rotating arm 6. Each is protruded. Also, the support arm 8 is locked at its contact portion 8F to the locking shaft 6F. In order to bias the support arm 8 in the direction of A helical spring 9 is interposed between the protruding shafts 8G and 6E.

[0017] A bracket protruding from the side of the main frame 2 is provided to rotate the rotating arm 6. A base end 10A of a hydraulic cylinder 10 is pivotally supported by a shaft 11 on the rotary arm 12. The piston rod 1 of the hydraulic cylinder 10 is mounted on the bracket 6D protruding from the plate 6B of 6. The tip of 0B is pivotally supported by a shaft 13.

[0018] Next, the operation of the embodiment will be described. First, depending on the diameter of the roll bale B to be held and transported, Switch the arrangement of the support arm 8. When handling small-diameter roll bales, use a support as shown in Figure 3. The holding arm 8 is arranged so that the protruding length on the tip side is short, but this arrangement makes it possible to use a large diameter roll base. To change the arrangement to handle the handle, pull the lever from the shaft 8G protruding from the curved rod 8A of the support arm 8. Remove one end of the winding spring 9, pull out the support shaft 14, and turn the support arm 8 upside down in the same direction. Flip it so that it looks like this. This allows the support arm 8 to be arranged with a long protruding length on the distal end side as shown in Fig. 5. Once the support shaft 14 has been placed in the All you have to do is do it.

[0019] In this way, since the length of the support arm 8 protruding toward the distal end can be selectively adjusted, Depending on the diameter of the large or small roll bale B, the outside of the adjacent roll bale B Activate the target roll bale B's circumferential surface to the maximum extent without risk of damaging the circumferential surface. It can be clamped and there is no risk of damaging the packaging film of the adjacent roll bale.

[0020] For example, when horizontally placed roll bale B is placed vertically as shown in Figure 4, In this case, the bale gripper 1 is moved to the tip side by the extension movement of the hydraulic cylinder i of the front loader a. Rotate it approximately 90 degrees so that it faces downward, and position it above the roll bale B. Next Then, the rotation arm 6 is rotated by the contraction movement of the hydraulic cylinder 10, and the support arm 8 is rotated so that its tip side is It is opened to the necessary opening width between the fixed arm 3 and the hydraulic cylinder f is contracted. Lower the bale gripper 1 and place the fixed arm 3 and support arm 8 on both sides of the roll bale B. position.

[0021] Next, the extending movement of the hydraulic cylinder 10 of the bale gripper 1 moves the rotating arm 6 in the gripping direction. When the support arm 8 is rotated to Due to the reaction force of It rotates in the holding direction, presses against the circumferential surface of the roll bale B together with the curved rod 8A, and connects with the fixed arm 3. The roll bail B can be held between the support arm 8 and the support arm 8. Support arm 8 is rotating arm 6 Since it is rotatably supported by This makes it possible to maintain a stable clamping state and minimize deformation of roll bale B. This can reduce the airtightness of roll bale B wrapped in film. It never happens.

[0022] After holding the roll bale B in this way, raise the bale gripper 1 and Rotate the roll bale 90 degrees to place it vertically, open the support arm 8, and place the roll bale B vertically. All you have to do is release Rule B. In this case, the support arm 8 opens in the reverse order to that described above, i.e. That is, in response to the rotation of the rotation arm 6 in the release direction, the distal end side of the support arm 8 is moved against the spiral spring 9. Since the urging force causes the roll base to open wide using the support shaft 14 as a fulcrum, a small movement of the rotating arm 6 can open the roll base. An opening sufficient to release the hole B can be formed. In other words, the rotating arm 6 Since the amount of rotation can be reduced and the lateral operating area of the bale gripper 1 can be reduced, the lateral It is possible to reduce the need to consider obstacles.

[0023] When the support arm 8 is in the released state, the contact portion 8F of the support arm 8 is pushed by the biasing force of the helical spring 9. is kept in contact with the locking shaft 6F of the rotating arm 6, so it does not swing freely when moving. There's nothing to do. Further, a roller 3C is provided at the tip of the fixed arm 3 and at both ends of the support arm 8. , 8C, the contact friction with the roll bale B can be reduced, and the roll bale It is possible to prevent damage to the film wrapped around B. Note that rollers 3c and 8c must be is also not required.

[0024]

[Effect of the idea]

In summary, the present invention provides the following excellent effects.

[0025] (1) A fixed arm is provided on one side of the main frame, and a rotatable support arm is provided on the other side via a rotating arm. Therefore, the supporting arm comes into contact with the circumferential shape of the cylindrical object, resulting in a stable It is possible to maintain the clamped state and minimize deformation of the cylindrical object. , without impairing the airtightness of the roll bale wrapped in film.

[0026] (2) Since the pivot arm is pivoted at a position displaced from the center of the support arm via a support shaft, The length of the support arm protruding toward the tip side can be selectively adjusted, allowing for large or small diameter circles. Depending on the diameter of the cylindrical object, the maximum value without causing damage to the outer circumferential surface of an adjacent cylindrical object. It becomes possible to effectively clamp the circumferential surface of the target cylindrical object within a limited range.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of a working machine of the present invention mounted on a tractor.

FIG. 2 is a plan view of the working machine.

FIG. 3 is a partially enlarged plan view of the working machine.

FIG. 4 is a side view of the working machine.

FIG. 5 is a plan view showing the operation of the working machine.

FIG. 6 is a plan view of a conventional working machine.

[Explanation of symbols]

2 Main frame 3 Fixed arm 6 Rotating arm 8 Support arm 14 Support shaft T tractor a Front loader

Claims (1)

[Scope of utility model registration request] Claim 1: A main frame attached to a front loader of a tractor, a fixed arm fixed to one side of the main frame and supporting a part of the outer peripheral surface of a cylindrical object such as a roll bale, and other parts of the main frame. A rotating arm is pivotally supported on the side and driven to open and close with respect to the fixed arm, and the rotating arm is rotatably supported at a position displaced from the center via a support shaft. A cargo handling machine, such as a roll bale, characterized by comprising a support arm that clamps the outer peripheral surface between the fixed arm and the fixed arm.