Track loader with improved stability

Abstract

The present invention provides a track loader with improved stability, characterized by comprising: a boom (150) that lifts an attachment to a desired height and is composed of two parallel beams in a horizontal direction and has a cylinder mounting part (159) to which the end of a hydraulic cylinder (120) is attached to the side; an attachment mounting part (155) provided at the front end of the boom (150) and having hook-shaped protrusions (157) formed downward on each side to mount an attachment; a rear support part (160) that rises obliquely upward on each side of the rear end of the boom (150); a cross bar (170) that connects the upper ends of the two rear support parts (160) and reinforces mutual support force; and a weight (200) that uses the cross bar (170) as a rotation axis and moves the center of gravity while rotating by an external force. With the above configuration, the present invention has the advantageous effect of increasing the stability of the vehicle body by appropriately rotating the weight so that it becomes parallel to the ground at the rear, thereby shifting the center of gravity further to the rear of the track loader and balancing against the weight of the overloaded bucket.

Description

Technology Field

[0001] The present invention relates to a track loader with improved stability during operation, and more specifically, to a track loader in which stability is improved by maintaining the equilibrium of the center of gravity according to the movement of the lift arm. Background Technology

[0003] A skid loader is a compact, multi-purpose construction machine designed to work nimbly even in confined spaces. Its small size and short turning radius allow for easy operation even in tight areas.

[0004] Furthermore, the wheels can be moved independently to change direction, and various attachments such as forks, brushes, drills, and snow blowers can be mounted in addition to the bucket.

[0005] However, if heavy objects are excessively loaded into the skid loader's bucket, various problems can occur. For example, the center of gravity shifts forward, increasing the likelihood of tilting or overturning. The risk of overturning is even greater, especially when working on slopes.

[0006] Furthermore, as the load on the front increases, steering becomes difficult, the rear wheels may lift, and braking power weakens even when the brakes are applied, which can lead to an accident.

[0007] In addition, the load is concentrated on the front wheels, causing the tires to wear out abnormally quickly. It also places a heavy burden on the vehicle frame and suspension, shortening their lifespan, and can be dangerous due to excessive body roll while moving.

[0008] Track Loaders were introduced to solve these problems.

[0009] FIGS. 1(a) and FIGS. 1(b) are perspective views of a conventional track loader (10). Like a skid loader, the track loader (10) is configured to perform various tasks by attaching an attachment, such as a bucket (110), to the front end of a lift arm (100).

[0010] In particular, in FIG. 1(b), the track loader (10) lifts the lift arm (100) by moving the hydraulic cylinder (120) forward and backward, and unlike a skid loader, it uses a track (130), so it has good traction and is excellent in terms of vehicle body stability.

[0011] However, although the track loader (10) has improved stability by using a track (130), problems such as vehicle instability still occur when the bucket (110) is overloaded with goods, just like with a skid loader. Therefore, technology is required to stably operate, move, and work the vehicle body even when the bucket (110) is loaded with a large amount of cargo. Prior art literature

[0013] Republic of Korea Published Patent Application No. 10-2018-0083550 "Bucket attitude maintaining device for tractor loader" The problem to be solved

[0014] The present invention aims to obtain a track loader with improved stability that enhances operational stability by precisely adjusting the unstable center of gravity of the track loader when the bucket is overloaded.

[0015] The present invention aims to obtain a track loader with improved stability capable of performing the movement of the center of gravity as efficiently as possible. means of solving the problem

[0017] To achieve the above objectives, the present invention provides a track loader with improved stability, characterized by comprising: a boom (150) that lifts an attachment to a desired height and is composed of two parallel beams in the horizontal direction, and has a cylinder mounting part (159) to which the end of a hydraulic cylinder (120) is attached to the side; an attachment mounting part (155) provided at the front end of the boom (150) and having hook-shaped protrusions (157) formed downward on each side to mount an attachment; a rear support part (160) that rises obliquely upward on each side of the rear end of the boom (150); a cross bar (170) that connects the upper ends of the two rear support parts (160) and reinforces mutual support; and a weight (200) that uses the cross bar (170) as a rotation axis and moves the center of gravity while rotating by an external force.

[0018] Here, the weight (200) is characterized by being composed of: a cylindrical body (210) having a hollow (211) through which the horizontal bar (170) passes, an outer groove (213) formed in the upper cylinder in the rotational direction on the outer surface, and a fixing pin (217) provided at the end of the outer groove (213); and a body (250) extending downward in a fan shape from the lower cylinder of the cylindrical body (210), with a thickness increasing as it goes downward, and a vertical groove (219) formed vertically downward that connects to the other end of the outer groove (213).

[0019] Furthermore, it may further include a wire (230) that is fixed at one end to the fixed pin (217), fixed at the other end to the rotation axis of the control motor (220), and wound while moving along the outer groove (213) and vertical groove (219) by the rotation of the control motor (220). Effects of the invention

[0021] With the above configuration, the present invention has the advantageous effect of increasing the stability of the vehicle body by appropriately rotating the weight so that it becomes parallel to the ground at the rear, thereby shifting the center of gravity further to the rear of the track loader and balancing against the weight of the overloaded bucket.

[0022] In addition, according to the present invention, operational stability is improved so that the vehicle body does not tip over even when lifting heavy loads, and since the balance is automatically adjusted to make operation easier, there is an advantageous effect of reducing the burden on the driver.

[0023] In addition, according to the present invention, work delay time caused by balance issues is reduced, thereby increasing work speed and providing the advantageous effect of being applicable to various sites. Brief explanation of the drawing

[0025] FIGS. 1(a) and FIGS. 1(b) are perspective views of a conventional track loader (10). FIGS. 2 and FIGS. 3 are a side view and a perspective view of a lift arm (10) constituting a track loader with improved stability according to the present invention. FIGS. 4a and FIGS. 4b are a rear perspective view and a rear view, respectively, of a weight (200) mounted on a lift arm (10) constituting a track loader with improved stability according to the present invention. FIGS. 5A and FIGS. 5B are a front perspective view and a front view, respectively, of a weight (200) mounted on a lift arm (10) constituting a track loader with improved stability according to the present invention. FIG. 6 is a bottom view of a lift arm (10) constituting a track loader with improved stability according to the present invention. FIGS. 7a and FIGS. 7b are side views showing a weight (200) mounted on a cross bar (170) of a lift arm (10) that constitutes a track loader with improved stability according to the present invention and rotating. FIGS. 8a and FIGS. 8b are a perspective view and a partial enlarged view, respectively, showing the moment when a weight (200) is mounted on a cross bar (170) of a lift arm (100) constituting a track loader with improved stability according to the present invention and rotates. FIG. 9 is an overall system configuration diagram for driving a track loader with improved stability according to the present invention. Specific details for implementing the invention

[0026] The above-mentioned objectives, features, and other advantages of the present invention will become more apparent by describing preferred embodiments of the present invention in detail with reference to the accompanying drawings. Hereinafter, a track loader with improved stability according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0028] FIGS. 2 and FIGS. 3 are a side view and a perspective view of a lift arm (10) constituting a track loader with improved stability according to the present invention.

[0029] First, the boom (150) lifts various attachments such as buckets, forks, brushes, drills, and snow blowers to a desired height and is composed of two parallel beams in the horizontal direction. On the side, a cylinder mounting part (159) is provided to which the end of a hydraulic cylinder (120) is attached.

[0030] In addition, an attachment mounting portion (155) is provided at the front end of the boom (150), and hook-shaped protrusions (157) are formed downward on each side to mount an attachment.

[0031] Furthermore, it is preferable that the rear support member (160) rises obliquely upward from each side of the rear end of the boom (150).

[0032] And the horizontal bar (170) connects the upper ends of the two rear support members (160) and reinforces mutual support.

[0034] FIGS. 4a and FIGS. 4b are a rear perspective view and a rear view, respectively, of a weight (200) mounted on a lift arm (10) constituting a track loader with improved stability according to the present invention.

[0035] The weight (200) of FIGS. 4a and 4b can rotate by an external force using the horizontal bar (170) as a rotation axis and move its center of gravity.

[0036] More specifically, the weight (200) includes a cylindrical body (210) having a hollow (211) through which the horizontal bar (170) passes, an outer groove (213) formed in the upper cylinder in the rotational direction on the outer surface, and a fixing pin (217) provided at the end of the outer groove (213).

[0037] Here, the cylinder corresponding to the upper semicircle of the cylinder's cross-section is named the upper cylinder, and the cylinder corresponding to the lower semicircle is named the lower cylinder.

[0038] Additionally, the weight (200) includes a body (250) that extends downward in a fan shape from the lower half of the cylinder (210), becomes thicker as it goes downward, and has a vertical groove (219) formed vertically downward that connects to the other end of the outer groove (213).

[0039] As the body (250) becomes thicker as it goes downward, the center of gravity can be shifted as far down as possible. This allows the center of gravity to shift further to the rear of the track loader when the body (250) is later rotated 90 degrees to become parallel to the ground, thereby balancing the weight of the overloaded bucket and doubling the stability.

[0041] FIGS. 5A and FIGS. 5B are a front perspective view and a front view, respectively, of a weight (200) mounted on a lift arm (10) constituting a track loader with improved stability according to the present invention.

[0042] In FIGS. 5A and 5B, a vertical groove (219) connected to the other end of the outer groove (213) is formed vertically downward on the front of the body (250).

[0043] Therefore, the wire (230) described below can be extended downward along the outer groove (213) and the vertical groove (219).

[0045] FIG. 6 is a bottom view of a lift arm (10) constituting a track loader with improved stability according to the present invention.

[0046] As shown in Fig. 6, a vertical groove (219) is formed to guide the wire (230).

[0048] FIGS. 7a and FIGS. 7b are side views showing a weight (200) mounted on a cross bar (170) of a lift arm (10) that constitutes a track loader with improved stability according to the present invention and rotating.

[0049] In FIG. 7a, the center of gravity can be moved further rearward by the control motor (220) pulling the wire (230) to rotate the body (250) of the weight (200) 90 degrees backward parallel to the ground. Thus, when a heavy object is loaded in the bucket (110), the weight balance can be maintained so that the vehicle body does not tilt.

[0050] Balance can be achieved by precisely adjusting the angle according to the load in the bucket.

[0051] In FIG. 7b, the control motor (220) releases the wire (230) to position the body (250) of the weight (200) vertically to the ground, thereby allowing the center of gravity to be moved forward when the bucket is empty or loaded with a light object.

[0052] Furthermore, when the wire (230) touches the vertical groove (219), the weight (200) no longer rotates and becomes stable.

[0053] Here, it is preferable that the control motor (200) be provided inside the body of the track loader (10).

[0055] FIGS. 8a and FIGS. 8b are a perspective view and a partial enlarged view, respectively, showing the moment when a weight (200) is mounted on a cross bar (170) of a lift arm (100) constituting a track loader with improved stability according to the present invention and rotates.

[0056] Unlike Fig. 8a, in the case of a heavier overload, multiple weights (200) may be installed to maintain weight balance.

[0057] As shown in FIG. 8b, one end of the wire (230) is fixed to the fixing pin (217) with a loop (288), and the other end is fixed to the rotation axis of the control motor (220), and can be wound while moving along the outer groove (213) and vertical groove (219) by the rotation of the control motor (220).

[0059] FIG. 9 is an overall system configuration diagram for driving a track loader with improved stability according to the present invention.

[0060] When the bucket lifts a heavy load, the system of the present invention can automatically rotate a counterweight mounted on the rear of the vehicle to maintain balance.

[0061] That is, it is preferable to operate a system in which a weight sensor (900) inside the vehicle detects the weight loaded in the bucket and rotates the weight (200) in the opposite direction.

[0062] The weight (200) controls the movement of the center of gravity by winding or unwinding the wire (230) fixed to the control motor (220).

[0063] Preferably, the gyro sensor (800) detects the angle at which the track loader (10) is tilted, and if it exceeds a certain level, the weight (200) is immediately rotated to safely balance it.

[0064] This is performed by a smart controller (700) that analyzes sensor data and determines the optimal weight transfer.

[0065] Therefore, according to the present invention, operational stability is improved so that the vehicle body does not tip over even when lifting heavy loads, and since the balance is automatically adjusted to make operation easier, there is an advantageous effect of reducing the burden on the driver.

[0066] Furthermore, it reduces work delays caused by balance issues, thereby increasing work speed and offering advantageous effects applicable to various sites.

[0067] Furthermore, by adopting an artificial intelligence algorithm, the smart controller (700) can learn weight change patterns and maintain optimal balance.

[0069] As explained above, various design changes may be attempted within the same scope as the problem of the present invention; however, unless such design changes result in a new effect entirely unexpected from the present invention, they shall not exceed the scope of the rights of the present invention. Explanation of the symbols

[0071] 120: Hydraulic cylinder 150: Boom 155: Attachment mounting section 157: Protrusion 159: Cylinder mounting section 160: Rear support 170: Horizontal bar 200: Weight 210: Cylindrical body 211: Communist China 213: Outsourcing Home 217: Fixing pin 219: Vertical groove 220: Control motor 230: Wire 250: Body

Claims

Claim 1 A track loader with improved stability, characterized by comprising: a boom (150) that lifts an attachment to a desired height and is composed of two parallel beams in a horizontal direction, and has a cylinder mounting part (159) to which the end of a hydraulic cylinder (120) is attached to the side; an attachment mounting part (155) provided at the front end of the boom (150) and having hook-shaped protrusions (157) formed downward on each side to mount an attachment; a rear support part (160) that rises obliquely upward on each side of the rear end of the boom (150); a cross bar (170) that connects the upper ends of both rear support parts (160) and reinforces mutual support; and a weight (200) that uses the cross bar (170) as a rotation axis and moves the center of gravity while rotating by an external force. Claim 2 A track loader with improved stability according to claim 1, wherein the weight (200) comprises: a cylindrical body (210) having a hollow (211) through which the horizontal bar (170) passes, an outer groove (213) formed in the upper cylinder in the rotational direction on the outer surface, and a fixing pin (217) provided at the end of the outer groove (213); and a body (250) extending downward in a fan shape from the lower cylinder of the cylindrical body (210), becoming thicker as it goes downward, and having a vertical groove (219) formed vertically downward that connects to the other end of the outer groove (213). Claim 3 A track loader with improved stability according to claim 2, further comprising a wire (230) having one end fixed to the fixing pin (217) and the other end fixed to the rotation axis of the control motor (220), and moving along the outer groove (213) and vertical groove (219) and wound by the rotation of the control motor (220).

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