Hydraulic valve body casting with buffering function

Abstract

The utility model relates to the technical field of hydraulic valve body castings, in particular to a hydraulic valve body casting with a buffering function, which comprises a valve body casting, a main runner, two first auxiliary runners and two second auxiliary runners, the main runner, the two first auxiliary runners and the two second auxiliary runners are arranged in the valve body casting, and the main runner penetrates through the valve body casting and extends to the left end face and the right end face of the valve body casting. A first oil groove, a second oil groove, a third oil groove and a fourth oil groove which communicate with the main runner are formed in the main runner at intervals, one ends of the two first auxiliary runners communicate with the first oil groove and the fourth oil groove correspondingly, and the other ends of the two first auxiliary runners penetrate through the valve body casting and extend to the lower surface of the valve body casting. Due to the design of the main flow channel, the two first auxiliary flow channels, the two second auxiliary flow channels and the two third auxiliary flow channels in the valve body casting, oil for the valve body can be conveyed through the multi-directional flow channels, so that the trend of the oil is reasonably controlled, and the stability of a machine assembled with the valve body casting is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic valve body castings, and particularly relates to a hydraulic valve body casting with a buffering function. Background Art

[0002] At present, there is still a large gap between the overall manufacturing technology level of China's hydraulic parts industry and that of advanced countries in the world. The integral valve body designed by Liugong at present has a technical level comparable to that of similar products in advanced foreign countries. The project products reflect a relatively high casting level and have a good development trend.

[0003] The internal buffer flow channels of the existing valve body castings are complex, which easily leads to the situation of blocked or excessive materials in the cast buffer flow channels, and it is difficult to ensure the dimensional accuracy of the flow channels. Therefore, there is an urgent need to design a hydraulic valve body casting with a buffering function to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic valve body casting with a buffering function, which solves the problems that the internal buffer flow channels of the existing valve body castings are complex, easily lead to the situation of blocked or excessive materials in the cast buffer flow channels, and it is difficult to ensure the dimensional accuracy of the flow channels.

[0005] To solve the above technical problems, the utility model provides a hydraulic valve body casting with a buffering function, which includes a valve body casting and a main flow channel, two first auxiliary flow channels and two second auxiliary flow channels arranged in the valve body casting. The main flow channel penetrates through the valve body casting and extends to the left end face and the right end face of the valve body casting. First oil grooves, second oil grooves, third oil grooves and fourth oil grooves which are communicated with the main flow channel are arranged at intervals on the main flow channel. One ends of the two first auxiliary flow channels are respectively communicated with the first oil groove and the fourth oil groove, and the other ends penetrate through the valve body casting and extend to the lower surface of the valve body casting. The two second auxiliary flow channels penetrate through the valve body casting, and both ends thereof respectively extend to the front side face and the rear side face of the valve body casting and are located on one side of the main flow channel.

[0006] Further, each first auxiliary flow channel is composed of an inlet / outlet section, a buffer section and a conveying section which are arranged in sequence from bottom to top. One end of the inlet / outlet section penetrates through the lower surface of the valve body casting, and the other end is communicated with the buffer section. The buffer section is communicated with the conveying section. The conveying section is communicated with the first oil groove or the fourth oil groove. The inlet / outlet section and the conveying section are respectively arranged at both ends of the buffer section in a staggered manner.

[0007] Further, the inlet / outlet section is a through hole perpendicular to the axis of the main flow channel, the cross section of the buffer section is L-shaped, and the conveying section is a square hole communicated with the first oil groove.

[0008] Further, two third auxiliary flow channels are also provided at the top of the valve body casting. The vertical cross-section of each third auxiliary flow channel is L-shaped. The inner ends of the two third auxiliary flow channels are respectively communicated with the second oil groove and the fourth oil groove. The short side section of the third auxiliary flow channel is arranged parallel to the main flow channel, and the long side section is arranged perpendicular to the main flow channel.

[0009] Further, a first buffer oil hole and a second buffer oil hole communicated with the main flow channel are respectively arranged at both ends of the main flow channel. The inner diameters of the first buffer oil hole and the second buffer oil hole are larger than the inner diameter of the main flow channel and smaller than the inner diameter of the first oil groove.

[0010] Further, the first auxiliary flow channel and the second auxiliary flow channel are arranged in parallel, and both of the first auxiliary flow channels are arranged perpendicular to the main flow channel.

[0011] Advantages of the present utility model: In the present utility model, the design of the main flow channel, two first auxiliary flow channels, two second auxiliary flow channels and two third auxiliary flow channels in the valve body casting enables the hydraulic oil to be transported through multi-directional flow channels, so as to reasonably control the oil flow direction and improve the stability of the machine assembled with the valve body casting;

[0012] The design of the first auxiliary flow channel can buffer the impact force of the oil in the first oil groove and the fourth oil groove to balance the impact force during oil flow, and buffer the oil in the oil groove in a one-to-one manner to improve the operation stability of the valve body casting;

[0013] The design of the third auxiliary flow channel can buffer the impact force of the oil in the second oil groove and the third oil groove to balance the impact force during oil flow, and buffer the oil in the oil groove in a one-to-one manner to improve the operation stability of the valve body casting. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is the front view of a hydraulic valve body casting with a buffer function according to the present utility model;

[0016] Figure 2 is the A-A cross-sectional view of a hydraulic valve body casting with a buffer function according to the present utility model;

[0017] Figure 3It is the right view of a hydraulic valve body casting with a buffer function of the present utility model and having a second auxiliary flow channel;

[0018] Figure 4 It is the side view of a hydraulic valve body casting with a buffer function of the present utility model, where the first oil groove and the first auxiliary flow channel are connected;

[0019] Figure 5 It is the B - B cross - sectional view of a hydraulic valve body casting with a buffer function of the present utility model;

[0020] Figure 6 It is the side view of the third auxiliary flow channel of a hydraulic valve body casting with a buffer function of the present utility model;

[0021] In the figure: 1 - valve body casting, 11 - main flow channel, 12 - first auxiliary flow channel, 13 - second auxiliary flow channel, 14 - left end face, 15 - right end face, 16 - lower surface, 17 - front side face, 18 - rear side face, 19 - third auxiliary flow channel, 111 - first oil groove, 112 - second oil groove, 113 - third oil groove, 114 - fourth oil groove, 115 - first buffer oil hole, 116 - second buffer oil hole, 121 - inlet - outlet section, 122 - buffer section, 123 - conveying section, 191 - short side section, 192 - long side section. Detailed implementation manners

[0022] Next, in combination with the attached drawings of the specification of the present utility model, the technical solutions in the embodiments of the utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] In a specific embodiment of the present utility model, as Figures 1-6 shown, a hydraulic valve body casting with a buffer function is specifically disclosed, including a valve body casting 1 and a main flow channel 11, two first auxiliary flow channels 12 and two second auxiliary flow channels 13 arranged in the valve body casting 1. The main flow channel 11 runs through the valve body casting 1 and extends to the left end face 14 and the right end face 15 of the valve body casting 1. The first auxiliary flow channels 12 and the second auxiliary flow channels 13 are arranged in parallel, and both of the two first auxiliary flow channels 12 are perpendicular to the main flow channel 11;

[0024] Two third auxiliary flow channels 19 are also provided at the top of the valve body casting 1. The vertical section of each third auxiliary flow channel 19 is L-shaped. The inner ends of the two third auxiliary flow channels 19 are respectively connected to the second oil groove 112 and the third oil groove 113. The vertical axis of the short side segment 191 of the third auxiliary flow channel 19 is arranged parallel to the vertical axis of the main flow channel 11, and the horizontal center line of the long side segment 192 is arranged perpendicular to the vertical axis of the main flow channel 11. The design of the third auxiliary flow channel 19 can buffer the impact force of the oil in the second oil groove 112 and the third oil groove 113 to balance the impact force when the oil flows, and buffer the oil in the oil groove in a one-to-one manner to improve the operation stability of the valve body casting 1;

[0025] A first buffer oil hole 115 and a second buffer oil hole 116 communicating with the main channel 11 are respectively provided at both ends of the main channel 11. The inner diameters of the first buffer oil hole 115 and the second buffer oil hole 116 are larger than the inner diameter of the main channel 11 and smaller than the inner diameter of the first oil groove 111.

[0026] The main channel 11 is provided with a first oil groove 111, a second oil groove 112, a third oil groove 113 and a fourth oil groove 114 which are interconnected with the main channel 11 at intervals. One end of the two first auxiliary channels 12 is respectively connected with the first oil groove 111 and the fourth oil groove 114, and the other end penetrates the valve body casting 1 and extends to the lower surface 16 of the valve body casting 1. The two second auxiliary channels 13 penetrate the valve body casting 1 and their two ends extend to the front side 17 and the rear side 18 of the valve body casting 1 respectively, and are located on one side of the main channel 11. The design of the main channel 11, the two first auxiliary channels 12, the two second auxiliary channels 13 and the two third auxiliary channels 19 in the valve body casting 1 enables the hydraulic oil to be transported through the multi-directional channels to reasonably control the direction of the oil and improve the stability of the machinery assembled with the valve body casting 1.

[0027] Each first auxiliary flow channel 12 is composed of an inlet and outlet section 121, a buffer section 122 and a conveying section 123 which are arranged in sequence from bottom to top. One end of the inlet and outlet section 121 passes through the lower surface 16 of the valve body casting 1, and the other end is connected to the buffer section 122. The buffer section 122 is connected to the conveying section 123. The conveying section 123 is connected to the first oil groove 111 or the fourth oil groove 114. The inlet and outlet section 121 and the conveying section 123 are staggered at the two ends of the buffer section 122.

[0028] The inlet and outlet section 121 is a through hole perpendicular to the axis of the main channel 11 , the cross section of the buffer section 122 is L-shaped, and the conveying section 123 is a square hole connected to the first oil groove 111 or the fourth oil groove 114 .

[0029] The design of the first auxiliary flow channel 12 can buffer the impact force of the oil in the first oil tank 111 and the fourth oil tank 114 to balance the impact force during oil flow, and buffer the oil in the oil tank in a one-to-one manner to improve the operating stability of the valve body casting 1.

[0030] The working process of the present utility model:

[0031] Part of the hydraulic oil enters from one end of the main flow channel 11 and flows out from the other end. At the same time, another part of the hydraulic oil enters from one end of the second auxiliary flow channel 13 and flows out from the other end.

[0032] When the oil in the main flow channel 11 is flowing, there are two buffering methods.

[0033] One of the buffering methods is: the hydraulic oil flows from the short side section 191 of the two third auxiliary flow channels 19 to the long side section 192 and then enters the second oil tank 112, the third oil tank 113 and the main flow channel 11. After buffering the flow direction of the oil in the main flow channel 11, it enters the two first auxiliary flow channels 12 from the first oil tank 111 and the fourth oil tank 114 respectively, and then flows out from the access section 121 after being buffered in the buffer section 122 through the conveying section 123 of the two first auxiliary flow channels 12, so as to keep the oil pressure and flow direction in the main flow channel 11 balanced and improve the stability of the machine assembled with the valve body casting 1.

[0034] Another buffering method: the hydraulic oil enters from the access section 121 of the two first auxiliary flow channels 12 respectively, and then enters the buffer section 122 for buffering and is conveyed to the conveying section 123, and is conveyed from the conveying section 123 to the first oil tank 111 and the fourth oil tank 114 to buffer with the hydraulic oil in the main flow channel 11, and then enters the long side section 192 of each third auxiliary flow channel 19 from the second oil tank 112 and the third oil tank 113 respectively and then enters the short side section 191 and is output, so as to keep the oil pressure and flow direction in the main flow channel 11 balanced and improve the stability of the machine assembled with the valve body casting 1.

[0035] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of the rights of the present utility model. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A hydraulic valve body casting with a buffering function, characterized in that: The invention comprises a valve body casting (1), a main flow channel (11), two first auxiliary flow channels (12) and two second auxiliary flow channels (13) arranged in the valve body casting (1), wherein the main flow channel (11) penetrates the valve body casting (1) and extends to the left end surface (14) and the right end surface (15) of the valve body casting (1), and the main flow channel (11) is provided with a first oil groove (111), a second oil groove (112) and a third oil groove (113) which are interconnected with the main flow channel (11) at intervals. and a fourth oil groove (114); one end of the two first auxiliary flow channels (12) is respectively connected to the first oil groove (111) and the fourth oil groove (114), and the other end passes through the valve body casting (1) and extends to the lower surface (16) of the valve body casting (1); the two second auxiliary flow channels (13) pass through the valve body casting (1) and their two ends respectively extend to the front side (17) and the rear side (18) of the valve body casting (1), and are located on one side of the main flow channel (11).

2. A hydraulic valve body casting with a buffering function according to claim 1, characterized in that: Each of the first auxiliary flow channels (12) is composed of an inlet and outlet section (121), a buffer section (122) and a conveying section (123) which are arranged in sequence from bottom to top; one end of the inlet and outlet section (121) passes through the lower surface (16) of the valve body casting (1), and the other end is communicated with the buffer section (122); the buffer section (122) is communicated with the conveying section (123); the conveying section (123) is communicated with the first oil groove (111) or the fourth oil groove (114); the inlet and outlet section (121) and the conveying section (123) are respectively arranged at two ends of the buffer section (122) in an offset manner.

3. A hydraulic valve body casting with a buffering function according to claim 2, characterized in that: The inlet and outlet section (121) is a through hole perpendicular to the axis of the main channel (11), the cross section of the buffer section (122) is L-shaped, and the conveying section (123) is a square hole connected to the first oil groove (111).

4. A hydraulic valve body casting with a buffering function according to claim 1, characterized in that: Two third auxiliary flow channels (19) are also provided at the top of the valve body casting (1); the vertical cross-section of each of the third auxiliary flow channels (19) is L-shaped; the inner ends of the two third auxiliary flow channels (19) are respectively connected to the second oil groove (112) and the third oil groove (113); the short side section (191) of the third auxiliary flow channel (19) is arranged parallel to the main flow channel (11), and the long side section (192) is arranged perpendicular to the main flow channel (11).

5. The hydraulic valve body casting with buffer function according to claim 1, characterized in that: A first buffer oil hole (115) and a second buffer oil hole (116) are respectively provided at both ends of the main channel (11) and are connected to the main channel (11). The inner diameters of the first buffer oil hole (115) and the second buffer oil hole (116) are larger than the inner diameter of the main channel (11) and smaller than the inner diameter of the first oil groove (111).

6. The hydraulic valve body casting with buffer function according to claim 1, characterized in that: The first auxiliary flow channel (12) and the second auxiliary flow channel (13) are arranged in parallel, and the two first auxiliary flow channels (12) are arranged perpendicular to the main flow channel (11).

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