CN113187001A - Bulldozer - Google Patents

Abstract

The invention relates to the field of engineering machinery and discloses a bulldozer, wherein the bulldozer comprises a blade (10), a bow-shaped frame (20) and a walking device (30), the bow-shaped frame (20) comprises a beam part (21) and bending extension parts (22) extending from two sides of the beam part (21) in a bending mode, and the bending extension parts (22) are installed on the outer side of the walking device (30). In this application, the bow is installed in the running gear outside, therefore can not receive the running gear restriction and install the spiller of great size. In addition, the bow-shaped frame is arranged on the outer side of the walking device, so that the mounting position of the lifting oil cylinder can be conveniently arranged, a large load can be borne, and the high-power bulldozer is suitable for a high-horsepower bulldozer. Besides, the bow-shaped frame is not limited by the gap between the frame and the crawler, and the crawler can be selected according to the requirement.

Description

Bulldozer

Technical Field

The invention relates to engineering machinery, in particular to a bulldozer.

Background

Bulldozers are commonly used engineering machines for construction work, and the scraper knife of the bulldozers is installed through a bow-shaped frame. Specifically, the bow-shaped frame is fixedly connected with the frame on the inner side of the walking device, and the lifting oil cylinder is approximately horizontally arranged on a support at the rear end of the bow-shaped frame so as to be hinged with the rear end of the rack. A similar structure may refer to CN 205530418U. Because the bow-shaped frame is arranged at the inner side of the walking device, the bulldozer of the form can only select the scraper knife with small width, the scraper knife has smaller operation capacity and low working efficiency. In addition, the structural form determines that the high-power motor cannot bear large load, and is generally assembled and used for medium and small-horsepower bulldozers. In addition, the gap between the frame and the crawler of the walking device is related to the structural form of the bow-shaped frame, the type selection of the crawler is greatly influenced by the bow-shaped frame, and the use requirement of special working conditions cannot be met.

Disclosure of Invention

The present invention has an object to overcome the problems of the prior art in which a blade is small in width and is not suitable for a bulldozer of high horsepower, and to provide a bulldozer which can be provided with a wide blade and which provides a required high horsepower.

In order to achieve the above object, an aspect of the present invention provides a bulldozer, which includes a blade, a bow, and a runner, wherein the bow includes a beam portion and bent extensions bent and extended from both sides of the beam portion, and the bent extensions are mounted to an outer side of the runner.

Optionally, the bulldozer includes a lifting cylinder for lifting the blade, the blade is mounted on the bow-shaped frame, the beam portion is provided with a lifting support, and both ends of the lifting cylinder are respectively mounted on the lifting support and a cylinder beam of a front hood of the bulldozer.

Optionally, the beam portion is connected with the scraper knife through a spherical hinge, and the lifting support is respectively arranged on two sides of the spherical hinge joint of the beam portion and the scraper knife.

Optionally, the blade is provided with a screw ball seat, the beam portion is provided with a screw support, and the bulldozer includes an adjusting screw installed through the screw ball seat and the screw support to adjust a cutting angle of the blade.

Optionally, the scraper knife includes a scraper knife arc plate and a rear box plate which are arranged oppositely, the rear box plate is provided with an opening, and the screw ball seat penetrates through the opening to be connected to the scraper knife arc plate and the rear box plate.

Optionally, the screw ball seat is arranged above a spherical hinge joint of the beam portion and the scraper knife.

Optionally, first rotation ball seats are arranged on two sides of the scraper knife, a second rotation ball seat is arranged on the bending extension portion, the bulldozer comprises two rotation oil cylinders, and two ends of each rotation oil cylinder are respectively installed on the corresponding first rotation ball seat and the corresponding second rotation ball seat.

Optionally, the scraper knife is provided with a first inclined support, the beam portion is provided with a heightening support protruding upwards, a second inclined support is arranged on the heightening support, the bulldozer comprises an inclined oil cylinder, and two ends of the inclined oil cylinder are respectively installed on the first inclined support and the second inclined support.

Optionally, the bow forms a sealed box structure, and the cross section of the bent extension part is gradually reduced from the beam part to the tail end of the bent extension part.

Optionally, a trunnion hanging plate is arranged on the outer side surface of the walking device, a trunnion is installed on the trunnion hanging plate, and the tail end of the bending extension part is connected with the trunnion in a spherical hinge mode.

Through the technical scheme, the bow rack is arranged on the outer side of the traveling device, so that a scraper knife with a larger size can be installed without being limited by the traveling device. In addition, the bow-shaped frame is arranged on the outer side of the walking device, so that the mounting position of the lifting oil cylinder can be conveniently arranged, a large load can be borne, and the high-power bulldozer is suitable for a high-horsepower bulldozer. Besides, the bow-shaped frame is not limited by the gap between the frame and the crawler, and the crawler can be selected according to the requirement.

Drawings

Fig. 1 is a perspective view showing a connection relationship between a bow and a blade of a bulldozer according to an embodiment of the present application;

figure 2 is a perspective view of the bow of figure 1;

FIG. 3 is a perspective view of the blade of FIG. 1;

FIG. 4 is a principal plan view of a bulldozer according to an embodiment of the present application;

FIG. 5 is a side view of a portion of FIG. 4;

FIG. 6 is a schematic diagram illustrating the movement of a blade using the swing cylinder of FIG. 1;

FIG. 7 is a schematic diagram illustrating the movement of a blade using the tilt cylinder of FIG. 1;

fig. 8 is a schematic view showing adjustment of a cutting angle of the blade of fig. 1.

Description of the reference numerals

10. A scraper knife; 11. a screw ball seat; 12. a scraper knife arc plate; 13. a rear box board; 14. a first swivel ball seat; 15. a first inclined support; 16. a central ball seat; 20. an arched frame; 21. a beam section; 211. lifting the support; 212. a screw support; 213. heightening a support; 214. a second inclined support; 215. a half-tile support; 22. bending the extension part; 221. a second swivel ball seat; 30. a traveling device; 31. a trunnion hanging plate; 32. a trunnion; 40. lifting the oil cylinder; 50 oil cylinder cross beams; 60. adjusting the screw rod; 70. a rotary oil cylinder; 80. and (5) inclining the oil cylinder.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The present application provides a bulldozer, wherein the bulldozer comprises a blade 10, a bow 20 and a running gear 30, the blade 10 is mounted on the bow 20, the bow 20 comprises a beam portion 21 and bending extension portions 22 extending from both sides of the beam portion 21 in a bending manner, and the bending extension portions 22 are mounted on the outer side of the running gear 30.

In the bulldozer of the present application, the bow 20 is mounted outside the runner 30, and thus the blade 10 of a larger size can be mounted without being restricted by the runner. Furthermore, the bow 20 is no longer limited by the clearance between the frame and the relevant parts (e.g., the track) of the running gear 30, and the parts can be selected as needed.

In addition, by installing the bow 20 outside the traveling device 30, the installation position of the lift cylinder 40 can be easily set so as to bear a large load, and the bow is suitable for a bulldozer with a large horsepower. Specifically, because the lift cylinder is approximately horizontally arranged in the prior art, the component of the lifting force in the vertical direction is small, so that the effective acting force of the lift cylinder is small, and the lifting height of the scraper knife is limited. In the present application, the lift cylinder 40 does not need to be disposed approximately horizontally, and can be disposed at a large inclination angle with respect to the horizontal direction, so that the lifting force has a large vertical component, to provide a more effective lifting force, and to increase the lifting height.

In the present application, the bow 20 may be a single or separate piece, for example, the beam portion 21 and the bent extension 22 may be formed separately and fixed by suitable means (e.g., welding).

Specifically, as shown in fig. 1 and 5, the bulldozer includes a lift cylinder 40 for raising and lowering the blade 10, the cross member 21 is provided with a lift support 211, and both ends of the lift cylinder 40 are respectively mounted on the lift support 211 and a cylinder cross member 50 of a front hood of the bulldozer. As shown in fig. 1, the lift cylinder 40 can be disposed at a large angle with respect to the horizontal direction (i.e., the plane surrounded by the bow 20), so that the lifting force of the lift cylinder 40 (in the extending direction of the lift cylinder 40) has a large vertical direction component, and a larger lifting force can be provided, so that the lifting height of the blade 10 is increased and the throughput of the entire machine is improved.

Furthermore, the blade 10 can be adjusted in its position relative to the bow 20 in a suitable manner. To facilitate the adjustment of the position of the blade 10 relative to the bow 20, a movable connection to the blade 10 may be made via a beam portion 21 at the front end of the bow 20. Specifically, the beam portion 21 and the blade 10 may be connected by a ball joint, and the two sides of the ball joint of the beam portion 21 and the blade 10 are respectively provided with the lifting support 211. To form a ball-and-socket joint, as shown in fig. 1, the blade 10 may have a central socket 16 at the widthwise center thereof, and the beam portion 21 may have a half-tile seat 215 corresponding to the position of the central socket 16.

As mentioned above, the blade 10 may be arranged to be movable relative to the bow 20 for adjusting its working position. In order to adjust the cutting angle of the blade 10, as shown in fig. 1 and 8, the blade 10 may be provided with a screw ball seat 11, the beam portion 21 may be provided with a screw support 212, and the bulldozer may include an adjustment screw 60 installed to adjust the cutting angle of the blade 10 through the screw ball seat 11 and the screw support 212. The cutting angle of blade 10, i.e., the angle of the bottom of blade arc 12 relative to the ground in fig. 8, can be adjusted by adjusting the length of adjustment screw 60 between screw ball seat 11 and screw support 212.

Wherein, the screw ball seat 11 can be set up in the suitable position of spiller 10, for the stability and the installation intensity that increase the structure, spiller 10 is including relative spiller arc 12 and the back boxboard 13 that sets up, back boxboard 13 is provided with the opening, screw ball seat 11 passes the opening connect in spiller arc 12 and back boxboard 13. Specifically, the screw ball seat 11 may be welded to the blade arc plate 12 and the rear box plate 13. Through the arrangement, the screw ball seat 11 is simultaneously connected with the scraper knife arc plate 12 and the rear box plate 13 of the scraper knife 10 to form double-layer welding, so that the connection strength is increased, and the screw ball seat 11 can be used as a fulcrum of the working stress of the scraper knife 10, thereby improving the support of the scraper knife 10.

The rear box plate 13 may serve as a mounting base for other supports (e.g., a center ball seat 16, a first swivel ball seat 14, hereinafter, a first inclined support 15) that may be welded to the rear surface (i.e., the surface facing the bow 20) of the rear box plate 13.

In order to provide an effective adjustment function, as shown in fig. 1 and 3, the adjusting screw 60 may be obliquely disposed, and specifically, the screw ball seat 11 is disposed above the spherical hinge joint of the beam portion 21 and the blade 10. Wherein the screw support 212 is provided on the beam portion 21 at a position lower than the screw ball seat 11 so that the adjustment screw 60 is obliquely provided. More specifically, as shown in fig. 2, the half-shoe support 215 is provided at the center of the front side of the beam portion 21, and the screw support 212 may be provided at the center of the top side of the beam portion 21 so that the ball-hinge joint is offset from the position of the adjustment screw 60.

In addition, the blade 10 may be provided to be rotatable back and forth. Specifically, as shown in fig. 1 to 4, first rotation ball seats 14 are disposed on two sides of the blade 10, a second rotation ball seat 221 is disposed on the bending extension portion 22, and the bulldozer includes two rotation cylinders 70, wherein two ends of each rotation cylinder 70 are respectively mounted on the corresponding first rotation ball seat 14 and second rotation ball seat 221. The forward and backward rotation of the blade 10 can be achieved by the cooperative operation of the two swing cylinders 70, as shown in fig. 6. Specifically, the blade 10 may be moved from position I to position II in fig. 6 by extending the swivel cylinder 70 on the left side of fig. 1 and retracting the swivel cylinder 70 on the right side; similarly, the blade 10 may be moved from position I to position III in fig. 6 by extending the right-hand swivel cylinder 70 and retracting the left-hand swivel cylinder 70 in fig. 1 to laterally shift and trim the material with the blade 10.

In addition, the blade 10 may be provided to be rotatable up and down. Specifically, as shown in fig. 1 to 3, the blade 10 is provided with a first inclined support 15, the beam portion 21 is provided with a heightening support 213 protruding upward, the heightening support 213 is provided with a second inclined support 214, the bulldozer includes a tilt cylinder 80, and both ends of the tilt cylinder 80 are respectively mounted on the first inclined support 15 and the second inclined support 214. Specifically, the heightening support 213 extends upward from the beam portion 21 to protrude from the beam portion 21, that is, the height of the top of the heightening support 213 is higher than that of the beam portion 21, so that the tilt cylinder 80 is higher than the ball joint position of the blade 10 and the bow 20. The tilt cylinder 80 may be normally located such that the width of the blade 10 is in a horizontal direction (i.e., a position IV in fig. 7), and the blade 10 may be rotated up and down by extending and retracting the tilt cylinder 80 as needed, for example, the blade may be moved from the position IV to a position V or VI in fig. 7, so as to perform an operation of repairing an embankment or a side slope by the blade 10.

It can be understood that, since the bow 20 is disposed outside the traveling device 30 and is less limited by the traveling device 30, various rotating operations of the blade 10 can be performed in a wider range, for example, the rotating stroke of the blade 10 is made larger, and the lateral soil shifting effect is better.

Wherein the raised supports 213 may be provided as a unitary piece (e.g., a casting) to have sufficient strength. To satisfy the strength requirement and simplify the structure, the heightened support 213 may be preferably formed by welding a plurality of plate members.

In the present application, the bow 20 may form a sealed box structure to have good strength and rigidity. Wherein the cross section of the bending extension 22 may be configured to be gradually reduced from the beam portion 21 toward the end of the bending extension 22. Since the connection point of the bow 20 to the blade 10 is located at the beam portion 21, a large cross-section is provided at the beam portion 21 and a portion near the bent extension 22 of the beam portion 21, and sufficient support of the beam portion 21 to the blade 10 can be ensured. The end portion of the bent extension 22 only needs to bear thrust to support the running gear 30, and does not need to be provided with the same cross section as the beam portion 21, so that the cross section can be reduced relative to the beam portion 21, the structure is simplified, and the cost is reduced.

In the present application, the bow 20 may be mounted in a suitable manner at a suitable position outside the running gear 30. For example, the outer surface of the walking device 30 may be provided with a trunnion hanging plate 31, the trunnion hanging plate 31 is mounted with a trunnion 32, and the end of the bending extension 22 forms a spherical hinge with the trunnion 32 (for example, through a half-tile ball seat). Specifically, the trunnion hanging plate 31 may be fixed to an outer side surface of the bogie frame of the traveling device 30, and the trunnion 32 may be fixed (e.g., by bolts) to the bogie frame through the trunnion hanging plate 31. The connection mode of the bow-shaped frame 20 and the walking device 30 enables the bow-shaped frame 20 to bear larger load, and is suitable for working conditions with larger working strength such as soil shifting, soil separation and the like.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. The present application includes the combination of individual features in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims (10)

1. A bulldozer, characterized in that the bulldozer comprises a blade (10), a bow (20) and a running gear (30), wherein the blade (10) is mounted on the bow (20), the bow (20) comprises a beam portion (21) and bending extension portions (22) extending from both sides of the beam portion (21) in a bending manner, and the bending extension portions (22) are mounted on the outer side of the running gear (30).

2. A bulldozer according to claim 1, characterized in that said bulldozer comprises a lifting cylinder (40) for lifting said blade (10), said beam portion (21) being provided with a lifting abutment (211), both ends of said lifting cylinder (40) being mounted to said lifting abutment (211) and to a cylinder cross-member (50) of a front hood of said bulldozer, respectively.

3. The bulldozer according to claim 2, characterised in that said beam portion (21) is connected to said blade (10) by means of a ball joint, and said lifting seats (211) are provided on either side of the ball joint between said beam portion (21) and said blade (10).

4. A bulldozer according to claim 3, in which said blade (10) is provided with a screw ball seat (11), and said beam portion (21) is provided with a screw support (212), said bulldozer comprising an adjustment screw (60) mounted through said screw ball seat (11) and said screw support (212) for adjusting the cutting angle of said blade (10).

5. A bulldozer according to claim 4, in which said blade (10) comprises oppositely arranged blade arches (12) and a rear box plate (13), said rear box plate (13) being provided with an opening through which said screw ball seat (11) is connected to said blade arches (12) and to said rear box plate (13).

6. A bulldozer according to claim 5, in which said screw ball seat (11) is provided above the ball-and-socket joint of said beam portion (21) and said blade (10).

7. The bulldozer according to claim 2, characterized in that first swivel ball seats (14) are provided on both sides of said blade (10), and said buckle extension (22) is provided with second swivel ball seats (221), and said bulldozer comprises two swivel cylinders (70), and both ends of each swivel cylinder (70) are respectively mounted to said first and second swivel ball seats (14, 221) respectively.

8. The bulldozer according to claim 2, characterised in that said blade (10) is provided with a first tilting mount (15), said beam portion (21) is provided with an upwardly projecting heightening mount (213), said heightening mount (213) being provided with a second tilting mount (214), said bulldozer comprising a tilting cylinder (80), both ends of said tilting cylinder (80) being mounted to said first tilting mount (15) and said second tilting mount (214), respectively.

9. Bulldozer according to any of claims 1-8, characterized in that said bow (20) forms a sealed box structure, said bending extension (22) having a cross-section which tapers from said beam portion (21) towards the tip of said bending extension (22).

10. Bulldozer according to any one of claims 1-8, characterized in that a trunnion suspension plate (31) is arranged on the outer side surface of said walking means (30), a trunnion (32) is mounted on said trunnion suspension plate (31), and the tip of said bending extension (22) forms a ball-and-socket joint with said trunnion (32).

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