Shuttle valve transition block for excavator

Abstract

The utility model discloses a shuttle valve transition block for an excavator, which belongs to the technical field of mechanical engineering and comprises a U-shaped welding support, a three-way assembly is welded on the U-shaped welding support, and the three-way assembly comprises a plurality of large three-way joints and a small three-way joint. The top end of one large tee joint is connected with a shuttle valve connector, the top end of the small tee joint is connected with a right-angle connector, and the right-angle connector and the shuttle valve connector are connected through an oil-way pipeline to form an oil return channel controlling the excavator to rotate leftwards and rightwards. And the other large tee joints are respectively connected with corresponding oil-way pipelines to form corresponding control oil return circulating pipes, so that different working actions of the excavator can be controlled in the hydraulic process. The three-way assembly is simple in structure, smaller in occupied space, lower in machining cost, shorter in installation time and lower in installation cost, and a large number of adapters do not need to be installed when an oil way is installed.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical engineering, and in particular relates to a shuttle valve transition block for an excavator. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] In the prior art, the shuttle valve transition block of an excavator integrates multiple hydraulic valves on a six-sided connector, makes interconnected holes inside the six-sided connector integrated block, then installs a cartridge valve for controlling the opening and closing, and then connects each valve to form a circuit to form a typical hydraulic control circuit, and finally installs it at the corresponding position through a mounting plate fixedly connected to the integrated block.

[0004] Patent CN211774101 U discloses an oil return transition block for hydraulic control of an excavator. Through holes with different apertures and different purposes are arranged in the transition block, different mounting joints are arranged on each through hole, and connecting pipes, operating components and oil return circulation pipes for different purposes are transferred through the mounting joints to realize the control of different working actions of the excavator by the hydraulic process.

[0005] However, this structure has two problems. The first is that its complex channel requirements make its processing complicated and the cost high. The second is that a large number of adapters need to be installed on the through holes of the six-sided connector integrated block in order to connect with the oil circuit connector, resulting in a long installation time and high installation cost. Utility Model Content

[0006] In view of the above problems, the utility model provides a shuttle valve transition block for an excavator. A three-way assembly with a joint is pre-welded on a U-shaped welding bracket and installed as a whole in the excavator. The installation can be completed by connecting the corresponding oil return circulation pipe to the three-way assembly, which has lower cost, high installation efficiency and low installation cost.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A shuttle valve transition block for an excavator comprises a U-shaped welded bracket, a three-way assembly is welded on the U-shaped welded bracket, and the three-way assembly comprises a plurality of large tees and a small tee; the top end of one of the large tees is connected to a shuttle valve joint, the top end of the small tee is connected to a right-angle joint, the right-angle joint and the shuttle valve joint are connected through an oil pipeline to form an oil return channel for controlling the left and right rotation of the excavator; the remaining large tees are respectively connected to corresponding oil pipelines to form oil return channels for controlling the excavator arm to dig, the excavator arm to unload, the excavator boom to rise, the excavator boom to fall, the excavator bucket to dig, and the excavator bucket to unload.

[0009] Preferably, the U-shaped welding bracket includes a U-shaped plate, a welding plate vertically fixedly connected to the U-shaped plate, a mounting hole is also provided on the U-shaped plate, a groove and a V-groove are provided on the welding plate, the large tee is welded and fixed to the welding plate through the groove, and the small tee is welded and fixed to the welding plate through the V-groove.

[0010] Preferably, the large tee includes a first welding seat, the bottom surface of which is welded to the groove, and a first joint is arranged on the top surface of the first welding seat; the large tee also includes a second joint and a third joint arranged opposite to each other, the first joint is perpendicular to the second joint and the third joint, and a channel corresponding to the inner diameter of the first joint, the second joint and the third joint is opened in the first welding seat and connected to the first joint, the second joint and the third joint.

[0011] Preferably, the first connector and the second connector are external threads for connecting corresponding internal threaded pipelines or other connectors, and the third connector is internal threaded for connecting a pressure sensor with corresponding external threads.

[0012] Preferably, the small tee includes a second welding seat, a fourth joint is arranged on the top surface of the second welding seat, and the bottom surface of the second welding seat is welded to the V-groove; the small tee also includes a fifth joint and a sixth joint, the fifth joint and the sixth joint are arranged opposite to each other, the fourth joint is perpendicular to the fifth joint and the sixth joint, and a channel corresponding to the inner diameter of the fourth joint, the fifth joint and the sixth joint is opened in the second welding seat and connected; the fourth joint, the fifth joint and the sixth joint are all external threads.

[0013] Preferably, the right-angle joint includes a seventh joint with an internal thread and an eighth joint with an external thread, and the seventh joint is matched with the fourth joint for connection; the shuttle valve joint includes a ninth joint with an internal thread and a tenth joint and an eleventh joint with external threads; wherein the tenth joint and the eleventh joint are located on the same straight line, and the ninth joint is arranged perpendicular to the tenth joint and the eleventh joint; the three joint internal channels of the shuttle valve joint are interconnected, wherein the inner channel diameter of the ninth joint is smaller than the inner channels of the tenth joint and the eleventh joint, and the ninth joint is matched with the first joint for connection; the eighth joint and the eleventh joint are connected through corresponding oil pipelines.

[0014] Preferably, a steel ball is provided in the channel at the connection position of the tenth joint and the eleventh joint, and the diameter of the steel ball is larger than the inner channel of the ninth joint; when the tenth joint is filled with oil, the steel ball blocks the eleventh joint under the action of pressure, and when the eleventh joint is filled with oil, the steel ball blocks the tenth joint under the action of pressure.

[0015] Compared with the prior art, the utility model has the following advantages and positive effects:

[0016] The utility model provides an external threaded joint connected to an oil pipeline and an internal threaded joint connected to a pressure sensor on a three-way assembly. The three-way assembly can be directly connected to the oil pipeline and the pressure sensor to form an oil return circulation pipe. Different oil return circulation oil circuits are formed by arranging different three-way assemblies on a U-shaped welding bracket to realize the control of different working actions of the excavator by the hydraulic process.

[0017] The three-way assembly of the utility model has a simple structure, occupies a smaller volume, and has a lower processing cost. The corresponding three-way assembly is welded on the U-shaped welding bracket 1 in advance, and then the whole is installed in the excavator. It only needs to connect the corresponding return oil circulation pipe to the corresponding three-way assembly to complete the installation, which overcomes the problem that after the traditional hexahedral integrated block is installed, a large number of adapter joints need to be installed to connect the corresponding oil pipelines or operating parts, and the installation time is long and the installation cost is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 It is the overall front view of the embodiment of the utility model;

[0020] Figure 2 It is an overall top view of an embodiment of the utility model;

[0021] Figure 3 This is a front view of a U-shaped welding bracket according to an embodiment of the utility model;

[0022] Figure 4 This is a front view of a large three-way connection of an embodiment of the utility model;

[0023] Figure 5 This is a top view of a large three-way connection according to an embodiment of the utility model;

[0024] Figure 6 This is a front view of a small three-way connection of an embodiment of the utility model;

[0025] Figure 7 This is a top view of a small three-way connection according to an embodiment of the utility model;

[0026] Figure 8 This is a front view of a large three-way shuttle valve connector according to an embodiment of the utility model;

[0027] Fig. 9 It is a top view of a large three-way shuttle valve connector of an embodiment of the utility model;

[0028] Fig.10 This is a front view of a small tee connecting a right angle joint according to an embodiment of the utility model;

[0029] Fig.11 It is a top view of a small tee connecting a right angle joint according to an embodiment of the utility model;

[0030] In the figure:

[0031] 1-U-shaped welding bracket, 101-U-shaped plate, 102-welding plate, 103-groove, 104-V-groove, 105-mounting hole, 2-large tee, 21-first welding seat, 22-first joint, 23-second joint, 24-third joint, 3-small tee, 31-second welding seat 31, 32-fourth joint, 33-fifth joint, 34-sixth joint, 4-right angle joint, 41-seventh joint, 42-eighth joint, 5-shuttle valve joint, 51-ninth joint, 52-tenth joint, 53-eleventh joint, 54-steel ball. DETAILED DESCRIPTION

[0032] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0033] The utility model is described in detail below in conjunction with the accompanying drawings. This embodiment discloses a shuttle valve transition block for an excavator. Figure 1 As shown, it includes a U-shaped welding bracket 1, which includes a U-shaped plate 101, a welding plate 102 vertically fixedly connected to the horizontal plate of the U-shaped plate, a large tee 2 and a small tee 3 welded on the welding plate 102, and the top of the large tee on the far left is connected to the shuttle valve joint 5; the top of the small tee 3 is connected to the right-angle joint 4, and the right-angle joint 4 is connected to the shuttle valve joint 5 through an oil pipeline to form an oil return channel.

[0034] In this embodiment, there are 7 large three-way joints 2 and 1 small three-way joint 3. The leftmost large three-way joint 2 is connected to the small three-way joint 3 to control the left and right rotation of the excavator. The remaining large three-way joints 2 are respectively connected to the corresponding oil pipelines and pressure sensors of "arm excavation, unloading, boom rise and fall, bucket excavation, unloading" to form an oil return circulation pipeline for controlling the "arm excavation, unloading, boom rise and fall, bucket excavation, unloading" of the excavator.

[0035] In this embodiment, the U-shaped plate 101 is provided with four mounting holes 105, and the mounting holes 105 are arranged in groups of two on the two vertical plates of the U-shaped plate, and are used to install the U-shaped welding bracket 1 on the corresponding connecting plate in the excavator. The top of the welding plate 102 is evenly spaced with grooves 103 and V-grooves 104, and the U-shaped plate 101 is provided with mounting holes 105; the welding plate 102 is connected to the large tee 2 through the groove 103 and to the small tee 3 through the V-groove 104. In this embodiment, the small tee 3 is arranged in the middle left position of the U-shaped welding bracket 1, and there are two large tees between it and the leftmost large tee. It can be understood that the installation positions of the large tee and the small tee are adaptive settings for the convenience of installing the corresponding oil pipelines.

[0036] In this embodiment, the large tee 2 includes a first welding seat 21, a first joint 22 is arranged on the top surface of the first welding seat 21, and the bottom surface of the first welding seat 21 is welded to the groove 103; the large tee 2 also includes a second joint 23 and a third joint 24, the second joint 23 and the third joint 24 are arranged opposite to each other, both are perpendicular to the welding plate 102, and the first welding seat 21 is provided with a channel corresponding to the inner diameter of the first, second and third joints.

[0037] In this embodiment, the first joint 22 and the second joint 23 are external threads for connecting pipelines or other joints. The third joint 24 is an internal thread. The third joint 24 is connected to a pressure sensor with corresponding external threads for monitoring the oil circuit pressure in the large tee 2.

[0038] In this embodiment, the small tee 3 includes a second welding seat 31, a fourth joint 32 is arranged on the top surface of the second welding seat 31, and the bottom surface of the second welding seat 31 is welded to the V-groove 104; the small tee 3 also includes a fifth joint 33 and a sixth joint 34, the fifth joint 33 and the sixth joint 34 are arranged opposite to each other and are both perpendicular to the welding plate 102, and the second welding seat 31 is provided with a channel corresponding to the inner diameter of the fourth, fifth and sixth joints; the fourth, fifth and sixth joints are all external threads.

[0039] In this embodiment, the right-angle joint 4 includes a seventh joint 41 with an internal thread and an eighth joint 42 with an external thread, the internal thread of the seventh joint is consistent with the external thread of the fourth joint, and the seventh joint is threadedly connected to the fourth joint; the shuttle valve joint 5 includes a ninth joint 51 with an internal thread and a tenth joint 52 and an eleventh joint 53 with external threads, wherein the tenth joint 52 and the eleventh joint 53 are located on the same straight line, the ninth joint 51 is arranged perpendicular to the other two joints, and the three joints in the shuttle valve joint 5 are interconnected, wherein the inner channel diameter of the ninth joint 51 is smaller than the inner channels of the tenth joint 52 and the eleventh joint 53, and a steel ball 54 is arranged in the channel at the connection position of the tenth joint 52 and the eleventh joint 53, and the diameter of the steel ball 54 is larger than the inner channel of the ninth joint 51; the inner thread of the ninth joint is consistent with the external thread of the first joint, and the ninth joint is threadedly connected to the first joint.

[0040] In this embodiment, the leftmost large T-joint 2 is connected to the small T-joint 3 to form a hydraulic control circuit for controlling the left and right rotation of the excavator; the remaining large T-joints 2 are respectively connected to the corresponding oil pipelines and pressure sensors of "arm digging, unloading, boom raising, lowering, bucket digging, unloading" to form an oil return circulation pipeline, which is used to control the excavator's "arm digging, unloading, boom raising, lowering, bucket digging, unloading".

[0041] In this embodiment, if Figure 1 As shown, the first joint 22 of the leftmost large tee 2 is connected to the ninth joint 51 of the shuttle valve joint 5, and the third joint 24 is connected to the main valve; the fourth joint 32 of the small tee 3 is connected to the seventh joint 41 of the right-angle joint 4, and the eighth joint 42 is connected to the eleventh joint 53 through the corresponding oil pipeline, so that the leftmost large tee 2 and the small tee 3 are connected together; when a left rotation command is issued, the steel ball 54 blocks the eleventh joint 53 under pressure, and when a right rotation command is issued, the steel ball 54 blocks the tenth joint 52 under pressure.

[0042] The tee assembly is provided with an external threaded joint connected to the oil pipeline and an internal threaded joint connected to the pressure sensor. The oil pipeline and the pressure sensor can be directly connected through the joint of the tee assembly to form an oil return circulation pipe. By arranging different tee assemblies on the U-shaped welding bracket 1, different oil return circulation oil circuits are formed to realize the control of different working actions of the excavator by the hydraulic process.

[0043] The three-way assembly of the utility model has a simple structure, occupies a smaller volume, and has a lower processing cost. The corresponding three-way assembly is welded on the U-shaped welding bracket 1 in advance, and then the whole is installed in the excavator. It only needs to connect the corresponding return oil circulation pipe to the corresponding three-way assembly to complete the installation, which overcomes the problem that after the traditional hexahedral integrated block is installed, a large number of adapter joints need to be installed to connect the corresponding oil pipelines or operating parts, and the installation time is long and the installation cost is high.

[0044] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A shuttle valve transition block for an excavator, characterized in that: It comprises a U-shaped welded bracket, on which a tee assembly is welded, the tee assembly comprising a plurality of large tees and a small tee; the top end of one of the large tees is connected to a shuttle valve joint, the top end of the small tee is connected to a right-angle joint, the right-angle joint and the shuttle valve joint are connected through an oil pipeline to form an oil return channel for controlling the left and right rotation of the excavator; the remaining large tees are respectively connected to corresponding oil pipelines to form oil return channels for controlling the excavator boom to dig, the excavator boom to unload, the excavator boom to rise, the excavator boom to fall, the excavator bucket to dig, and the excavator bucket to unload.

2. The shuttle valve transition block for an excavator as claimed in claim 1, characterized in that: The U-shaped welding bracket includes a U-shaped plate, a welding plate vertically fixedly connected to the U-shaped plate, a mounting hole is also provided on the U-shaped plate, a groove and a V-groove are provided on the welding plate, the large tee is welded and fixed to the welding plate through the groove, and the small tee is welded and fixed to the welding plate through the V-groove.

3. The shuttle valve transition block for an excavator as claimed in claim 2, characterized in that: The large tee includes a first welding seat, the bottom surface of which is welded to the groove, and a first joint is arranged on the top surface of the first welding seat; the large tee also includes a second joint and a third joint arranged opposite to each other, the first joint is perpendicular to the second joint and the third joint, and a channel corresponding to the inner diameter of the first joint, the second joint, and the third joint is opened in the first welding seat and connected.

4. The shuttle valve transition block for an excavator as claimed in claim 3, characterized in that: The first connector and the second connector are external threads for connecting corresponding internal thread pipelines or other connectors, and the third connector is internal thread for connecting a pressure sensor with corresponding external threads.

5. The shuttle valve transition block for an excavator as claimed in claim 2, characterized in that: The small tee includes a second welding seat, a fourth joint is arranged on the top surface of the second welding seat, and the bottom surface of the second welding seat is welded to the V-groove; the small tee also includes a fifth joint and a sixth joint, the fifth joint and the sixth joint are arranged opposite to each other, the fourth joint is perpendicular to the fifth joint and the sixth joint, and a channel corresponding to the inner diameter of the fourth joint, the fifth joint, and the sixth joint is opened in the second welding seat and connected; the fourth joint, the fifth joint, and the sixth joint are all external threads.

6. The shuttle valve transition block for an excavator as claimed in claim 1, characterized in that: The right-angle joint includes a seventh joint with an internal thread and an eighth joint with an external thread, and the seventh joint is matched with the fourth joint for connection.

7. The shuttle valve transition block for an excavator as claimed in claim 1, characterized in that: The shuttle valve joint includes a ninth joint with an internal thread and a tenth joint and an eleventh joint with external threads; wherein the tenth joint and the eleventh joint are located on the same straight line, and the ninth joint is arranged perpendicular to the tenth joint and the eleventh joint; the three joint internal channels of the shuttle valve joint are interconnected, wherein the inner channel diameter of the ninth joint is smaller than the inner channels of the tenth joint and the eleventh joint, and the ninth joint is matched with the first joint for connection.

8. The shuttle valve transition block for an excavator as claimed in claim 7, characterized in that: A steel ball is arranged in the channel at the connection position of the tenth joint and the eleventh joint, and the diameter of the steel ball is larger than the inner channel of the ninth joint.

9. The shuttle valve transition block for an excavator as claimed in claim 7, characterized in that: The eleventh joint is connected to the eighth joint through corresponding oil pipelines.

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