Multi-head rotary hydraulic joint

Abstract

The utility model discloses a multi-head rotary hydraulic joint, which belongs to the field of hydraulic joints and comprises an outer sleeve, the outer sleeve is provided with a first outer connector and a second outer connector, and the second outer connector is positioned below the first outer connector. According to the multi-head rotary hydraulic joint, the situation of leakage of an oil body due to poor sealing can be effectively prevented through the arranged upper connecting gasket and the arranged lower connecting gasket, the second positioning semi-ring is pushed to move towards the first positioning semi-ring through the arranged positioning component, and the oil body can be effectively prevented from leaking out of the first positioning semi-ring. The second positioning semi-ring and the first positioning semi-ring are both attached to a mounting column on a machine table, the positioning bolt sequentially penetrates through the first positioning lug plate and the second positioning lug plate, the positioning nut is screwed so that the second positioning semi-ring can be positioned on the first positioning semi-ring, and therefore the whole outer sleeve can be mounted. And the stability of the whole outer sleeve during operation can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of hydraulic connectors, and particularly relates to a multi-head rotary hydraulic connector. Background Art

[0002] The union joints used between hydraulic cylinders mostly rely on the tips between the two ends to push open their respective valve cores under the action of external force to ensure the smoothness of the pipeline. When they are separated from each other, they close the oil circuit under the action of their respective return springs. When the connection between the plug and the external oil cylinder has low sealing performance, and when the hydraulic connector rotates, leakage is likely to occur at the connection between the plug and the external oil cylinder. When the whole hydraulic connector is connected to the machine mounting column, the hydraulic connector is often directly inserted into the notch of the machine mounting column. The overall stability of the hydraulic connector is weak, and the chassis of one hydraulic connector can only correspond to the notch of one machine mounting column, so the adaptation range is small. Therefore, it is urgent to improve this situation.

[0003] The present utility model attempts to alleviate or at least mitigate such problems or deficiencies by providing a new or otherwise improved hydraulic connector. Summary of the Utility Model

[0004] In view of one or more of the above-mentioned defects or improvement requirements in the prior art, the present utility model provides a multi-head rotary hydraulic connector, which has the advantages that the sealing performance at the connection between the plug and the external oil cylinder is improved, and the hydraulic connector can be connected to machine mounting columns of various different sizes, and the adaptation range is increased.

[0005] To achieve the above object, the present utility model provides a multi-head rotary hydraulic connector, which includes an outer sleeve having a first outer interface and a second outer interface, and the second outer interface is located below the first outer interface. An upper cover and a lower cover are respectively removably arranged at both ends thereof;

[0006] An inner sleeve, at both ends thereof, an upper turntable and a lower turntable are respectively removably arranged. The inner sleeve is rotatably arranged inside the outer sleeve, and a flow area for carrying fluid is formed between the inner sleeve and the outer sleeve. The fluid located in the flow area can flow out from the first outer interface and the second outer interface;

[0007] A plurality of groups of connecting pipes are all detachably arranged on the inner sleeve, and all the plurality of groups of connecting pipes are communicated with the flow area;

[0008] An upper connecting plug is detachably arranged inside the first outer interface;

[0009] A lower connecting plug is detachably arranged inside the second outer interface; and

[0010] A positioning member is detachably arranged at the bottom of the outer sleeve.

[0011] As a further improvement of the present utility model, the connecting pipe is composed of a vertical section and a bent section connected to the vertical section. Among them, the bent section is detachably connected to the inner sleeve, and the bent section communicates with the vertical section.

[0012] As a further improvement of the present utility model, a threaded port is further provided on the vertical section of the connecting pipe. The threaded port is arranged from top to bottom along the vertical section of the connecting pipe, and the size of the threaded port is adapted to the size of the vertical section of the connecting pipe.

[0013] As a further improvement of the present utility model, multiple groups of sealing screws are removably penetrated on the outer wall surface of the outer sleeve. Each group of the sealing screws is provided with a sealing ring, and the size of the sealing ring is adapted to the size of the sealing screw.

[0014] As a further improvement of the present utility model, an upper connecting gasket is removably arranged at one end of the upper connecting plug away from the first external interface, and the size of the upper connecting gasket is adapted to the size of the upper connecting plug.

[0015] As a further improvement of the present utility model, a lower connecting gasket is removably arranged at one end of the lower connecting plug away from the second external interface, and the size of the lower connecting gasket is adapted to the size of the lower connecting plug.

[0016] As a further improvement of the present utility model, the positioning member includes

[0017] A first positioning semi-ring, which is detachably arranged at the bottom of the outer sleeve, and a first positioning ear plate is integrally formed on its side surface;

[0018] A second positioning semi-ring, which is adjacent to one side of the first positioning semi-ring, and a clamping area is formed between it and the first positioning semi-ring. A second positioning ear plate is integrally formed on its side surface;

[0019] A positioning bolt, which sequentially passes through the first positioning ear plate and the second positioning ear plate; and

[0020] A positioning nut, which is rotatably arranged on the positioning bolt.

[0021] As a further improvement of the present utility model, a first anti-slip rubber pad is removably arranged on the inner circumferential surface of the first positioning semi-ring, and a second anti-slip rubber pad is removably arranged on the inner circumferential surface of the second positioning semi-ring.

[0022] Generally speaking, compared with the prior art by the above technical solutions conceived by the present utility model, the beneficial effects include:

[0023] The multi-head rotary hydraulic joint of the present utility model can be connected to an external main oil pipe through multiple sets of connecting pipes arranged, and the oil body is injected into the flowing area. After the upper connecting plug and the lower connecting plug are respectively connected to an external oil cylinder, the oil body flows into the oil cylinder from the upper connecting plug and the lower connecting plug respectively. Through the upper connecting gasket and the lower connecting gasket arranged, it can effectively prevent the oil body from leaking due to poor sealing. At the same time, through the arranged positioning member, the second positioning half-ring is pushed towards the first positioning half-ring to make the second positioning half-ring and the first positioning half-ring both fit with the mounting posts on the machine table. After passing the positioning bolts through the first positioning ear plate and the second positioning ear plate in sequence and screwing the positioning nuts to fix the second positioning half-ring on the first positioning half-ring, the overall installation of the outer sleeve is completed, which can improve the stability of the overall operation of the outer sleeve. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the multi-head rotary hydraulic joint of the present utility model as a whole;

[0025] Figure 2 It is an exploded view of the multi-head rotary hydraulic joint of the present utility model;

[0026] Figure 3 It is a schematic structural diagram of the outer sleeve of the present utility model;

[0027] Figure 4 It is a schematic structural diagram of the positioning member of the present utility model as a whole;

[0028] Figure 5 It is a top view of the present utility model when the outer sleeve is connected to the inner sleeve;

[0029] Figure 6 It is a schematic structural diagram of the lower connecting plug of the present utility model as a whole;

[0030] Figure 7 It is a schematic structural diagram of the multi-head rotary hydraulic joint of the present utility model when the positioning member is replaced with a flange plate.

[0031] In all the drawings, the same reference numerals represent the same technical features, specifically: 1. Outer sleeve; 11. Upper cover; 12. Lower cover; 2. Inner sleeve; 21. Upper turntable; 22. Lower turntable; 3. Connecting pipe; 4. Upper connecting plug; 41. Upper connecting gasket; 5. Lower connecting plug; 51. Lower connecting gasket; 6. Sealing screw; 7. Positioning member; 71. First positioning half-ring; 72. First positioning ear plate; 73. Second positioning half-ring; 74. Second positioning ear plate; 75. Positioning bolt; 76. Positioning nut. Detailed Embodiment

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] The terms used herein are only for describing specific embodiments and are not intended to limit the present utility model. The terms "including", "comprising", etc. used herein indicate the presence of the described features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0034] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0035] In the embodiment, it is given by Figures 1-7 a multi-head rotary hydraulic joint, wherein Figure 1 is a schematic structural diagram of the overall multi-head rotary hydraulic joint of the present utility model; Figure 2 is an exploded view of the multi-head rotary hydraulic joint of the present utility model; Figure 3 is a schematic structural diagram of the outer sleeve of the present utility model; Figure 4 is a schematic structural diagram of the overall positioning member of the present utility model; Figure 5 is a top view when the outer sleeve and the inner sleeve of the present utility model are connected; Figure 6 is a schematic structural diagram of the overall lower connecting plug of the present utility model, which includes an outer sleeve 1 having a first outer interface and a second outer interface, and the second outer interface is located below the first outer interface, and an upper cover 11 and a lower cover 12 are respectively removably arranged at its two ends; an inner sleeve 2, and an upper turntable 21 and a lower turntable 22 are respectively removably arranged at its two ends, and it is rotatably arranged in the outer sleeve 1, and a flow area for carrying fluid is formed between it and the outer sleeve 1, and the fluid located in the flow area can flow out from the first outer interface and the second outer interface; a plurality of groups of connecting pipes 3 are all detachably arranged on the inner sleeve 2, and the plurality of groups of connecting pipes 3 are all communicated with the flow area; an upper connecting plug 4 is detachably arranged in the first outer interface; a lower connecting plug 5 is detachably arranged in the second outer interface; and a positioning member 7 is detachably arranged at the bottom of the outer sleeve 1.

[0036] The overall idea on which the present utility model is based is that through multiple sets of connecting pipes 3 arranged, they can be connected to the external main oil pipe, and the oil body is injected into the flow area. After the upper connecting plug 4 and the lower connecting plug 5 are respectively connected to the external oil cylinder, the oil body then flows into the oil cylinder from the upper connecting plug 4 and the lower connecting plug 5 respectively. By arranging the upper connecting gasket 41 and the lower connecting gasket 51, it can effectively prevent the oil body from leaking due to poor sealing. At the same time, through the arranged positioning member 7, when pushing the second positioning half-ring 73 towards the first positioning half-ring 71, so that both the second positioning half-ring 73 and the first positioning half-ring 71 are in contact with the mounting posts on the machine table. After passing the positioning bolts 75 through the first positioning ear plate 72 and the second positioning ear plate 74 in sequence and screwing the positioning nuts 76, the second positioning half-ring 73 is positioned on the first positioning half-ring 71 to complete the overall installation of the outer sleeve 1, which can improve the stability of the overall operation of the outer sleeve 1. A fluid seal ring is also arranged below the upper turntable 21, and a fluid seal ring is also arranged above the lower turntable 22. The fluid seal ring rotates smoothly, without oil leakage and air leakage. The fluid seal ring can be engine oil or grease or mercury, which neither wears nor leaks oil and air, so as to improve the service life of the hydraulic joint.

[0037] In some embodiments, more specifically, in order to facilitate the connection between the connecting pipe 3 and the inner sleeve 2, therefore, the connecting pipe 3 is composed of a vertical section and a bent section connected to the vertical section. Among them, the bent section is detachably connected to the inner sleeve 2, and the bent section is in communication with the vertical section.

[0038] In some embodiments, more specifically, in order to facilitate the connection of the entire connecting pipe 3 to the external main oil pipe, therefore, a threaded port is also provided on the vertical section of the connecting pipe 3. The threaded port is arranged from top to bottom along the vertical section of the connecting pipe 3, and the size of the threaded port is adapted to the size of the vertical section of the connecting pipe 3.

[0039] In some embodiments, in order to facilitate further increasing the sealing effect of the outer wall surface of the outer sleeve 1, therefore, multiple sets of sealing screws 6 are removably penetrated on the outer wall surface of the outer sleeve 1. Each set of sealing screws 6 has a sealing ring, and the size of the sealing ring is adapted to the size of the sealing screws 6.

[0040] In some embodiments, more specifically, in order to further increase the sealing performance when the upper connecting plug 4 is connected to the external oil cylinder, and to prevent oil leakage when the upper connecting plug 4 is connected to the external oil cylinder, therefore, a removable upper connecting gasket 41 is arranged at the end of the upper connecting plug 4 away from the first external interface, and the size of the upper connecting gasket 41 is adapted to the size of the upper connecting plug 4.

[0041] In some embodiments, more specifically, in order to further increase the sealing performance of the lower connecting plug 5 when connected to the external oil cylinder and to prevent oil leakage when the lower connecting plug 5 is connected to the external oil cylinder, therefore, a lower connecting gasket 51 is removably disposed at one end of the lower connecting plug 5 away from the second external interface, and the size of the lower connecting gasket 51 is adapted to the size of the lower connecting plug 5.

[0042] Next, a more specific structure and configuration of the positioning member 7 as a whole will be further explained. The positioning member 7 includes a first positioning semi-ring 71, which is removably disposed at the bottom of the outer sleeve 1, and a first positioning ear plate 72 is integrally formed on its side surface; a second positioning semi-ring 73, which is adjacent to one side of the first positioning semi-ring 71, and a clamping area is formed between it and the first positioning semi-ring 71, and a second positioning ear plate 74 is integrally formed on its side surface; a positioning bolt 75, which sequentially passes through the first positioning ear plate 72 and the second positioning ear plate 74; and a positioning nut 76, which is rotatably disposed on the positioning bolt 75;

[0043] Next, the operating principle of the positioning member 7 as a whole will be further explained. Push the second positioning semi-ring 73 towards the first positioning semi-ring 71 so that both the second positioning semi-ring 73 and the first positioning semi-ring 71 are in contact with the mounting post on the machine table. After passing the positioning bolt 75 through the first positioning ear plate 72 and the second positioning ear plate 74 in sequence, turn the positioning nut 76 to position the second positioning semi-ring 73 on the first positioning semi-ring 71 to complete the installation of the outer sleeve 1 as a whole.

[0044] In some embodiments, in order to further strengthen the tightness of the connection between the positioning member 7 as a whole and the mounting post on the machine table, therefore, a first anti-slip rubber pad is removably disposed on the inner circumferential surface of the first positioning semi-ring 71, and a second anti-slip rubber pad is removably disposed on the inner circumferential surface of the second positioning semi-ring 73.

[0045] As shown in the appendix Figure 7 It should also be noted in the present utility model that the positioning member 7 can also be a flange. A plurality of groups of positioning holes are opened from top to bottom on the upper end surface of the flange. After passing bolts through the positioning holes, the bolts are positioned on the mounting post, and then the multi-head rotary hydraulic joint can be installed on the fixed post, and it can be stably fixed and installed to adapt to different installation scenarios.

[0046] In summary, through the arranged multiple groups of connecting pipes 3, they can be connected to the external main oil pipe, and the oil body is injected into the flowing area. After the upper connecting plug 4 and the lower connecting plug 5 are respectively connected to the external oil cylinder, the oil body flows into the oil cylinder from the upper connecting plug 4 and the lower connecting plug 5 respectively. By arranging the upper connecting gasket 41 and the lower connecting gasket 51, it can effectively prevent the oil body from leaking due to poor sealing. At the same time, through the arranged positioning member 7, when pushing the second positioning half-ring 73 towards the first positioning half-ring 71 to make the second positioning half-ring 73 and the first positioning half-ring 71 both fit with the mounting posts on the machine table, after passing the positioning bolts 75 through the first positioning ear plate 72 and the second positioning ear plate 74 in sequence and screwing the positioning nuts 76 to position the second positioning half-ring 73 on the first positioning half-ring 71, the overall installation of the outer sleeve 1 is completed, which can improve the stability of the overall operation of the outer sleeve 1.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-head rotary hydraulic joint, characterized in that: It includes An outer sleeve (1) having a first external interface and a second external interface, wherein the second external interface is located below the first external interface, and an upper cover (11) and a lower cover (12) are removably disposed at two ends of the second external interface; The inner sleeve (2) has an upper rotating disk (21) and a lower rotating disk (22) removably disposed at its two rear ends, and is rotatably disposed in the outer sleeve (1). A flow area for carrying fluid is formed between the inner sleeve (2) and the outer sleeve (1), and the fluid in the flow area can flow out from the first external port and the second external port; A plurality of groups of connecting pipes (3) are detachably arranged on the inner sleeve (2), and the plurality of groups of connecting pipes (3) are mutually connected with the flow area; An upper connecting plug (4) which is detachably arranged in the first external interface; A lower connecting plug (5) which is detachably arranged in the second external interface; and A positioning component (7) is detachably arranged on the bottom of the outer sleeve (1).

2. The multi-head rotary hydraulic joint according to claim 1, characterized in that: The connecting pipe (3) is composed of a vertical section and a curved section connected to the vertical section, wherein the curved section and the inner sleeve (2) are detachably connected, and the curved section and the vertical section are in communication with each other.

3. The multi-head rotary hydraulic joint according to claim 2, characterized in that: The vertical section of the connecting pipe (3) is also provided with a threaded opening, the threaded opening being arranged from top to bottom along the vertical section of the connecting pipe (3), and the size of the threaded opening being compatible with the size of the vertical section of the connecting pipe (3).

4. The multi-head rotary hydraulic joint according to claim 1, characterized in that: A plurality of groups of sealing screws (6) are removably inserted through the outer wall surface of the outer sleeve (1), each group of the sealing screws (6) is provided with a sealing ring, and the size of the sealing ring is adapted to the size of the sealing screw (6).

5. The multi-head rotary hydraulic joint according to claim 1, characterized in that: An upper connection gasket (41) is removably arranged on an end of the upper connection plug (4) away from the first external interface, and the size of the upper connection gasket (41) is adapted to the size of the upper connection plug (4).

6. The multi-head rotary hydraulic joint according to claim 1, characterized in that: A lower connection gasket (51) is removably arranged on an end of the lower connection plug (5) away from the second external interface, and the size of the lower connection gasket (51) is adapted to the size of the lower connection plug (5).

7. The multi-head rotary hydraulic joint according to claim 6, characterized in that: The positioning member (7) comprises A first positioning half ring (71) is detachably arranged on the bottom of the outer sleeve (1), and a first positioning ear plate (72) is integrally formed on the side surface thereof; A second positioning half ring (73) is adjacent to one side of the first positioning half ring (71), a clamping area is formed between the second positioning half ring (73) and a second positioning ear plate (74) is integrally formed on the side surface of the second positioning half ring (73); A positioning bolt (75) passes through the first positioning ear plate (72) and the second positioning ear plate (74) in sequence; and A positioning nut (76) is rotatably arranged on the positioning bolt (75).

8. The multi-head rotary hydraulic joint according to claim 7, characterized in that: A first anti-skid rubber pad is detachably provided on the inner circumferential surface of the first positioning semi-ring (71), and a second anti-skid rubber pad is detachably provided on the inner circumferential surface of the second positioning semi-ring (73).

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