JP3035735U - Packing frame swivel crawler carrier - Google Patents

Abstract

(57) [Abstract] [Abstract] Attenuating or absorbing vibrations and impacts from front, rear, left and right, and up and down directions transmitted during traveling, and minimizing vibrations and impacts received on the upper swing body side. Due to
The operator is prevented from fatigue so that a smooth and safe driving operation can be performed, and the damage to the equipment and the fatigue of the vehicle body structure due to vibration and impact are prevented. An upper revolving structure 12 of a crawler carrier is
The turning main plate 13 and the pair of main frames 14, 14 are configured in a non-connected state. The main frames 14, 14 are supported by a vibration damping device 15 having a plurality of vibration damping rubbers 17, 17, ... Connected between fixed frames 16, 16 provided on the swiveling main plate 13 and each main frame 14. I am doing it. Further, the upper swing body 12 is provided with a vertical shock absorbing mechanism 20 and a front and rear shock absorbing mechanism 24 for absorbing a shock to the main frame 14 side.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a crawler carrier that can be used for various works such as forest road works, river works, civil works such as residential land development works, transportation of aggregate for construction such as gravel and cement, and transportation of agricultural and marine products. .

[0002]

[Prior art]

 Generally, the crawler carrier is used for civil engineering work, construction work, agricultural work, etc., but depending on the work content, it may run on a place such as a temporary road or a wasteland that is not suitable for running, while improving work efficiency. In order to achieve this, gradually higher traveling speed is required. For this reason, the crawler carrier is subject to severe vibrations and shocks from up, down, left and right, and front and rear directions during traveling, but conventional crawler carriers are not designed to absorb vibrations and shocks. This is not the case at present, and at best, the driver's seat is supported by springs.

[0003]

[Problems to be solved by the device]

 However, it is not enough to support the seat with a spring as a means to reduce vibration and shock, and when traveling on a bad road or a wasteland, the operator is violently vibrated in the front-back, left-right and up-down directions during driving. As a result, there is a problem that the user is extremely tired, and the sense of control is weak, and smooth and safe driving cannot be performed.

The present invention has been made in view of the above-described drawbacks of the prior art, and does not damp or absorb vibrations and impacts from front, rear, left and right, and upper and lower directions transmitted through a crawler type traveling body during traveling. However, by minimizing the vibrations and impacts on the upper revolving structure side, it is possible to prevent operator fatigue and ensure smooth and safe driving operations. An object of the present invention is to provide a crawler carrier for swiveling a cargo frame that prevents structural fatigue.

[0005]

[Means for Solving the Problems]

 The means of the present invention configured to solve the above-mentioned problems includes a crawler type traveling body, a swinging device mounted on the crawler type traveling body, and an upper swinging body mounted on the swinging device. In the crawler carrier, the upper revolving structure has a main frame fixed to an outer ring of the revolving device, and a main frame for supporting a driver's cab, a machine room, and a cargo frame is arranged in a non-connected state. Is supported by a vibration damping device having a vibration damping body interposed between the swiveling main plate.

The vibration damping device may be a rubber type vibration damping device in which the vibration damping body is made of a rubber block.

The vibration damping device may be an air spring type vibration damping device in which the vibration absorber is made of rubber bellows.

By providing a bounce prevention body that prevents the main frame side from jumping up between the swivel main plate and the main frame side, the main frame side jumps up abnormally and the rubber bellows is damaged. Therefore, it is possible to prevent the operator from making a mistake.

Further, by providing a rolling regulation body for preventing the lateral vibration of the rubber bellows between the swiveling main plate and the main frame, the main frame side is abnormally twisted and the rubber bellows is It prevents damage and operator error.

Further, a vertical impact absorbing mechanism for absorbing upward and downward impacts from the side of the crawler type traveling body may be provided between the turning main plate and the main frame.

Further, a front and rear impact absorbing mechanism for absorbing front and rear impacts from the crawler type traveling body side may be provided between the turning main plate and the main frame.

Further, a left and right impact absorbing mechanism for absorbing left and right impacts from the crawler type traveling body side may be provided between the turning main plate and the main frame.

[0013]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 5 show a first embodiment. In the figure, reference numeral 1 denotes a crawler type traveling body (hereinafter referred to as traveling body 1), which is a track frame 2, a center frame 3 formed of a round cylinder provided on the track frame 2, and the track frame. The left and right side frames 4, 4 fixed to both sides of the side frame 2, the drive wheels 5 provided on the rear end side of each side frame 4 and driven by a hydraulic motor, and the front end side of the side frame 4 attached to the shafts. It is composed of the idler wheel 6 and the shoe body 7 wound between the idler wheel 6 and the drive wheel 5.

Reference numeral 8 denotes a turning device provided on the traveling body 1. The turning device 8 is fixed to the center frame 3 and has an inner ring 9 on which teeth are engraved and an outer periphery of the inner ring 9. A rotation motor having an outer ring 11 that is rotatably fitted through a ball 10 and fixed to an upper revolving structure 12 to be described later, and a pinion that is mounted on the upper revolving structure 12 and that meshes with the teeth of the inner ring 9. (Not shown).

Reference numeral 12 denotes an upper revolving structure which is revolvingly driven by the revolving device 8. Reference numeral 13 denotes a revolving main plate that constitutes the upper revolving structure 12, and the revolving main plate 13 is made of a steel plate formed in a substantially rectangular shape, and the outer ring 11 is fixed to a lower surface 13A. Reference numerals 14 and 14 denote a pair of main frames composed of two frame members 14A and 14A, each of which is made of U-shaped long steel, and which are vertically stacked and fixed in a substantially Y-shape. Are arranged at left and right positions in a non-connected state separated from the upper surface 13B of the swiveling main plate 13.

Reference numerals 15 and 15 denote a pair of left and right rubber-type vibration damping devices for damping vibrations and impacts transmitted from the traveling body 1 side to the main frame 14 side. Reference numeral 16 denotes a fixed frame that constitutes each of the rubber type vibration damping devices 15, and the fixed frame 16 is made of a long U-shaped long steel material and is separated from each main frame 14 so as to be spaced apart from each other and the main swivel plate 13 is provided. The upper surface 13B is fixed in parallel with the main frame 14. Reference numerals 17, 17, ... Denote a plurality of vibration damping rubbers interposed between the fixed frame 16 and the main frame 14, and each vibration damping rubber 17 is formed into a drum-shaped cylinder whose center in the axial direction is reduced in diameter. Washers 18, 18 are attached to both axial end faces. The shock-damping rubbers 17 are mounted on the washers 18, 18 by attaching mounting bolts 19, 19 projecting from the washers 18, 18 to the fixed frame 16 and the main frame 14, respectively, and tightening the nuts. It is supported in a separated state. The shock-damping rubbers 17 are adapted to damp the vibrations and shocks transmitted to the main frame 14 side by bending by receiving the vertical, front-rear, and left-right vibrations transmitted from the traveling body 1 side.

.. show four sets of upper and lower impact absorbing mechanisms arranged in parallel with the rubber type vibration damping devices 15, 15, and the upper and lower impact absorbing mechanisms 20, 20 ,. It is located near the corners. Reference numeral 21 is an impact absorbing rubber that constitutes each vertical impact absorbing mechanism 20, and the impact absorbing rubber 21 is in the shape of a thick disk and is fixed to the upper surface 13B of the swiveling main plate 13 via a washer 22. A contact plate 23 is fixed to the lower surface of the main frame 14 by welding or the like so as to face the shock absorbing rubber 21, and a minute gap A is provided between the contact plate 23 and the shock absorbing rubber 21. It is provided.

Further, 24, 24, ... Are four sets of front and rear impacts arranged in parallel with the rubber type vibration damping devices 15, 15 located near the four sets of the vertical shock absorbing mechanisms 20, 20 ,. The absorption mechanism is shown. Reference numeral 25 is a support bracket that constitutes each of the front and rear impact absorbing mechanisms 24. The support bracket 25 is made of a vertically long metal plate, and is located inside the main frame 14 near the corners of the upper surface 13B of the swivel main plate 13. It stands upright. Reference numeral 26 is a shock absorbing rubber formed in a substantially bowl shape, and the shock absorbing rubber 26 is attached to the support bracket 25 via a washer 27. Reference numeral 28 denotes a stopper plate projecting from the main frame 14 in a state of facing the shock absorbing rubber 26, and having a back surface supported by a substantially triangular reinforcing plate 29, and between the stopper plate 28 and the shock absorbing rubber 26. Has a minute void A.

1 to 3, reference numerals 30 and 31 denote a cab and an engine room mounted on the front side of the main frames 14 and 14, and 32 denotes a main frame 14 located behind the cab 30 and the like. 14 shows a loading frame which is pin-coupled and mounted, and the loading frame 32 can be moved up and down by a hydraulic lifting device 33 including a hydraulic cylinder 33A.

The present embodiment is as described above, and the main frames 14 and 14 that constitute the upper swing body 12 and support the cab 30 and the like are arranged in a non-connected state with respect to the swing main plate 13, and are made of rubber. The vibration damping device 15 is configured to be supported by vibration damping rubbers 17, 17, .... Therefore, the traveling body 1 receives vibrations and impacts in the vertical, left-right, and front-back directions from the ground and the road surface during work and traveling, but these vibrations received by the traveling body 1 side are caused by the vibration damping rubbers 17, 17 ,. The bending causes it to be attenuated and transmitted to the main frame 14 side.

Further, in the present embodiment, since the vertical shock absorber 20 and the front-rear shock absorber 24 are provided in addition to the rubber-type vibration damping device 15, when a large vertical shock is applied. The impact-absorbing rubber 21 comes into contact with the contact plate 23 and is compressed and deformed. When a large amount of front and rear vibration is received, the impact-absorbing rubber 26 comes into contact with the stopper plate 28 and is compressed and deformed. The impact applied to the 14 and 14 sides is made as small as possible.

Next, a second embodiment will be described with reference to FIGS. 6 to 10. The same components as those of the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted. 6 and 7, reference numerals 41, 41, ... Show four sets of air spring type vibration damping devices arranged near the corners of the swiveling main plate 13. Reference numeral 42 denotes a lower substrate that constitutes each of the air spring type vibration damping devices 41, and the lower substrate 42 is fixed to the upper surface 13B of the swivel main plate 13 by a fixing means such as welding. Reference numeral 43 denotes an upper substrate which is paired with the lower substrate 42, and a valve insertion hole 43A is formed in the upper substrate 43, and an air injection valve 44 is attached to the valve insertion hole 43A. . Reference numeral 45 denotes a rubber bellows for absorbing upward and downward vibrations. The rubber bellows 45 is sandwiched between the lower substrate 42 and the upper substrate 43 by engaging the metal stopper rings 46, 46 attached to the lower substrate 42 and the upper substrate 43, respectively, at the lower end side and the upper end side. A restriction ring 47 for restricting expansion is fitted in the middle.

Reference numeral 48 denotes a connecting plate which is fixed to the main frame 14 with one end thereof being supported by the reinforcing member 49 and which projects above the rubber bellows 45. The connecting plate 48 is made of a metal flat plate having a hole 48A formed in the center thereof so that the air injection valve 44 faces the outside, and a rod loose fitting hole 48C is formed in the protruding piece 48B on the tip side. There is. Then, by fixing the upper substrate 43 to the lower surface of the connecting plate 48, the upper substrate 43, the connecting plate 48, and the main frame 14 vibrate integrally. Reference numeral 50 denotes a spring-up preventing body for preventing the connecting plate 48 from abnormally jumping upward. The bounce prevention body 50 is made of a metal plate body having an upper end side which is a stopper 50A bent substantially in an inverted L shape, and with the stopper 50A protruding above the edge of the connecting plate 48, It is erected on the upper surface 13B of the turning main plate 13. In addition, reference numeral 51 denotes a roll restricting body for preventing roll on the main frame 14 side. The rolling regulation body 51 is composed of a plate body that is bent and formed in a U-shape. The supporting bracket 52 is provided upright on the upper surface 13B of the swiveling main plate 13 and the upper end side thereof is a rod supporting portion 52A. 52A, the lower end side of which is inserted into the guide rod 53 to project upward, the abutment nut 54 screwed onto the upper end side of the guide rod 53, and the disc-shaped rubber member attached to the lower surface of the corresponding contact nut 54. It is composed of a buffer piece 55.

FIG. 10 shows an air control circuit of the air spring type vibration damping device 41, 41, ... In the figure, 56 is an air compressor, 57 is an air supply pipe connected to the air compressor 56, and the air supply pipe 57 is provided with a main valve 58, a pressure reducing valve 59 and an air filter 60. Reference numerals 61, 61 denote a pair of air supply branch pipes branched and connected to the tip of the air supply pipe 57. The tip side of each air supply branch pipe 61 is further branched into air supply branch pipes 61A, 61A. And its tip is connected to each of the air injection valves 44 of the pair of rubber bellows 45, 45. Each air supply branch pipe 61 is provided with a leveling valve 62 and an air tank 63, and the air tank 63 is provided with a pressure gauge 64, a safety valve 65 and a drain valve 66.

Further, 67, 67, ... Depict four sets of front and rear impact absorbing mechanisms provided on the main swing plate 13 located outside the main frame 14 and in the vicinity of each air spring type vibration damping device 41. The front and rear impact absorbing mechanisms 67 are attached to a supporting bracket 68 which is erected on the upper surface 13B of the swiveling main plate 13 and a support bracket 68 which is attached to the upper side of the supporting bracket 68 via a washer 69, and a side surface of the bounce prevention body 50. It is composed of an impact absorbing rubber 70 facing each other with a minute gap A present between it and 50B.

.. are four sets of left and right impact absorbing mechanisms provided inside the main frame 14 and near the respective air spring type vibration damping devices 41 and provided on the swiveling main plate 13. . Each of the left and right impact absorbing mechanisms 71 is attached to a support bracket 72 that is erected on the upper surface 13B of the swivel main plate 13 so as to face the main frame 14, and a washer 73 on the upper side of the support bracket 72. The shock absorbing rubber 74 is composed of a shock absorbing rubber 74 and a rubber shock absorbing plate 75 attached to the main frame 14 so as to face each other with a minute gap A therebetween.

The present embodiment has the above-mentioned configuration, and its operation will be described below. By supplying compressed air from the air compressor 56 to the rubber bellows 45 through the air supply pipe 57 and the air supply branch pipe 61, the main frame 14 side of the upper swing body 12 is supported. When a load such as earth and sand is applied to the loading frame 32, the leveling valve 62 provided in the air supply branch pipe 61 is actuated to supply compressed air to the rubber bellows 45 and keep the main frame 14 side at a constant height. It is like this.

Vibrations and impacts that the traveling body 1 receives from the road surface side while the traveling body 1 travels attenuates the vibrations and the like that the cab 30 and the loading frame 32 side receive due to the elasticity of the air in the rubber bellows 45. Further, the contact of the connecting plate 48 to the bounce prevention member 50 prevents the main frame 14 side from abnormally jumping upward, and the roll restricting body 51 prevents the rubber bellows 45 from abnormally shaking horizontally. To prevent. When the traveling body 1 receives a strong impact in the front (rear) direction, each of the front and rear impact absorbing mechanisms 67 causes the impact absorbing rubber 70 to come into contact with the side surface of the jump-up preventing body 50, so that the main frame 14 side is not supported. Restrict abnormal vibration in the front (rear) direction. Further, in each of the left and right impact absorbing mechanisms 71, when the traveling body 1 receives a strong impact in the left (right) direction, the impact absorbing rubber 74 abuts on the side surface of the main frame 14 via the rubber cushion plate 75. This prevents the main frame 14 side from abnormally vibrating in the front-rear direction.

As described above, the air spring type vibration damping device 41 is provided with the leveling valve 62, and the vehicle height can be kept unchanged by adjusting the internal pressure of the rubber bellows 45 according to the increase or decrease of the load. Therefore, it is suitable to be mounted on a large-sized cargo frame swivel type cloak carrier.

[0030]

[Effect of the invention]

 The present invention has the following advantages because it is configured as described above. (1) The swing main plate and the main frame that form the upper swing body are arranged in a non-connected state, and the main frame is supported by a vibration damping device having a vibration damping body interposed between the swing main plate and the crawler. Vibrations and impacts transmitted from the traveling body side to the cab side are damped by the vibration damping body, so operator fatigue can be prevented and smooth driving operations can be performed, and equipment damage due to vibrations can be prevented. And fatigue of the vehicle body structure can be prevented. (2) Since the vibration damping device is composed of a rubber block, the vibration damping device can be constructed in a simple structure, so that it can be mounted on a small cargo frame swivel cloak carrier with a comparatively small load, and can be repaired or maintained. There is an advantage that, etc. are almost unnecessary. (3) Since the air spring type vibration damper using the rubber bellows can adjust the internal pressure of the rubber bellows, it is suitable for mounting on a large cargo frame swivel cloak carrier with a relatively large load. It is suitable. (4) The swing main plate is provided with a bounce prevention member that prevents the main frame side from jumping up, so that the main frame side abnormally bounces up and the rubber bellows is damaged. It is possible to prevent the operator from making an operation mistake and improve work safety. (5) Further, by providing the rolling restraint body of the rubber bellows between the main swinging main plate and the main frame, the main frame side is abnormally shaken and the rubber bellows is damaged, or the operator is It is possible to prevent a situation where an operation error is caused. (6) Front-rear impact absorbing mechanism for absorbing front and rear impacts before being transmitted from the crawler type traveling body between the main swing frame and main frame, or left-right impacts for absorbing left and right impacts By providing an absorption mechanism, the impact on the cab side can be reduced as much as possible even when an abnormal impact is applied from the front-rear direction or the left-right direction. It is possible to prevent operation mistakes and it is extremely safe for work.

[Brief description of the drawings]

1 to 5 relate to a first embodiment of the present invention, and FIG. 1 is a side view of a luggage frame swivel type crawler carrier.

FIG. 2 is a side view of the cargo frame swivel type crawler carrier in a state in which an upper swing body is swung and a loading frame is raised.

FIG. 3 is an enlarged plan view showing a disposition state of a rubber type vibration damping device, a vertical shock absorbing mechanism and a front and rear shock absorbing mechanism.

FIG. 4 is a partially enlarged view of FIG.

5 is a right side view of FIG. 4. FIG.

6 to 10 relate to a second embodiment,
FIG. 6 is a side view of the cargo frame swivel type crawler carrier.

FIG. 7 is an enlarged plan view showing an arrangement state of an air spring type vibration damping device, a front and rear impact absorbing mechanism, and a left and right impact absorbing mechanism.

FIG. 8 is an enlarged view of the direction of arrow B in FIG.

FIG. 9 is a sectional view taken in the direction of arrows IX-IX in FIG. 8;

FIG. 10 is an air control circuit diagram of the air spring type vibration damping device.

[Explanation of symbols]

 1 Crawler type traveling body 8 Revolving device 12 Upper revolving structure 13 Revolving main plate 14 Main frame 15 Rubber type vibration damping device 17 Vibration damping rubber 20 Vertical impact absorbing mechanism 24, 67 Front and rear impact absorbing mechanism 41 Air spring type vibration damping device 45 Rubber bellows 50 Bounce prevention body 51 Rolling regulation body 71 Left and right impact absorbing mechanism

Claims (8)

[Utility model registration claims] 1. A cargo frame swivel type crawler carrier comprising a crawler type traveling body, a swing device mounted on the crawler type traveling body, and an upper swing structure mounted on the swivel device.
The upper revolving superstructure has a structure in which a main frame supporting a driver's cab, a machine room, and a cargo frame is arranged in a non-connected state with respect to a main swinging plate fixed to an outer wheel of the swinging device, and the main frame is connected to the main swinging plate. A cargo frame swiveling crawler carrier, which is supported by a vibration damping device having a vibration damping body interposed therebetween. 2. The load frame swivel type crawler carrier according to claim 1, wherein the vibration damping device is a rubber type vibration damping device in which a vibration damping body is formed of a rubber block. 3. The load frame swivel crawler carrier according to claim 1, wherein the vibration damping device is an air spring type vibration damping device in which a vibration absorber is made of rubber bellows. 4. The load frame swivel type crawler carrier according to claim 3, further comprising a bounce prevention member provided between the swivel main plate and the main frame side to prevent the main frame side from jumping up. 5. The load frame swivel type crawler carrier according to claim 3, further comprising a roll restraint member provided between the swivel main plate and the main frame to prevent the rubber bellows from swinging in a lateral direction. 6. A vertical impact absorbing mechanism for absorbing an upward and downward impact transmitted from the side of the crawler type traveling body is provided between the turning main plate and the main frame. The cargo frame swivel type crawler carrier according to 1. 7. A front-rear impact absorbing mechanism for absorbing front and rear impacts transmitted from the side of the crawler type traveling body is provided between the swing main plate and the main frame. The cargo frame swivel type crawler carrier according to 1. 8. A left and right impact absorbing mechanism for absorbing left and right impacts transmitted from the side of the crawler type traveling body is provided between the turning main plate and the main frame. The cargo frame swivel type crawler carrier according to 1.