Built-in swing type hydraulic driving device

Abstract

The utility model discloses a built-in swing type hydraulic driving device. The shell is filled with hydraulic oil; the hydraulic rod is arranged in the shell, and one end of the hydraulic rod extends out of one side wall of the shell; the piston is arranged on the outer surface, located in the shell, of the hydraulic rod; the first oil port is formed in the outer wall surface of one end of the shell and is communicated with the shell; the second oil port is formed in the outer wall face of the shell and located at the end, away from the first oil port, of the shell. The driving mechanism is arranged on one end face of the shell and used for driving the hydraulic rod to swing, under the action of the driving mechanism, the hydraulic rod can rotate while stretching out and drawing back, compared with a conventional swing hydraulic cylinder, one hydraulic cylinder is omitted, the composition is simplified, meanwhile, the device is small in outer diameter and suitable for narrow installation space, and convenience is brought to people.

Description

Technical Field

[0001] The utility model relates to the technical field of swing hydraulic cylinders, in particular to a built-in swing type hydraulic drive device. Background Art

[0002] Usually, the swing mechanism can be completed by using a motor and a reducer, but compared with hydraulic actuators, motors have low power density, large size, and high cost of reducers. Therefore, in applications that require large output torque and small size, swing hydraulic cylinders are usually used.

[0003] Conventional swing hydraulic cylinders are two symmetrically arranged single-rod hydraulic cylinders, with a rack in the middle of the piston rod, which drives the gear to produce rotation and swing. Due to the layout of the hydraulic cylinder and the gear rack transmission method, the entire device is relatively wide and is not suitable for some applications with narrow installation space. Utility Model Content

[0004] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes a built-in swing type hydraulic drive device, including:

[0005] A housing, the interior of which is filled with hydraulic oil;

[0006] A hydraulic rod, disposed in the housing, with one end extending over a side wall of the housing;

[0007] A piston, disposed on an outer surface of the hydraulic rod located within the housing;

[0008] A first oil port is provided on an outer wall surface of one end of the housing and is communicated with the housing;

[0009] A second oil port is provided on the outer wall surface of the housing and is located at an end away from the first oil port;

[0010] The driving mechanism is arranged on one end surface of the housing and is used for driving the hydraulic rod to swing.

[0011] Preferably, the driving mechanism comprises:

[0012] A fixed shell, fixedly mounted on the outer wall of the shell;

[0013] A plug-in slot formed at one end of the hydraulic rod located inside the housing;

[0014] A rotating rod, one end of which is rotatably connected to the inner wall of the fixed shell, and the other end of which penetrates the side wall of the shell and is plugged into the plug-in slot;

[0015] A limiting groove is formed on the inner wall surface of the plug-in groove;

[0016] The limiting block is fixedly mounted on the outer surface of the rotating rod and is slidably connected to the limiting groove.

[0017] Preferably, it also includes:

[0018] A worm gear is disposed in the fixed housing and fixedly mounted on the outer surface of the rotating rod;

[0019] A worm, rotatably mounted in the fixed housing and meshingly connected with the worm wheel;

[0020] The driving member is arranged on the outer surface of the fixed shell, and the output end is fixedly connected to one end of the worm.

[0021] Preferably, a plurality of first annular grooves are formed on the outer surface of the piston, a first sealing ring is arranged in the first annular groove, and the outer surface of the first sealing ring contacts the inner wall surface of the housing.

[0022] Preferably, a second annular groove is formed in the side wall of the housing, a second sealing ring is provided in the second annular groove, and an inner surface of the second sealing ring contacts the outer surface of the hydraulic rod.

[0023] The beneficial technical effect of the utility model is that under the action of the driving mechanism, the hydraulic rod can be extended and retracted and can be rotated at the same time. Compared with the conventional swing hydraulic cylinder, one hydraulic cylinder is reduced, and the composition is simplified. At the same time, the device has a small outer diameter and is suitable for a small installation space, bringing convenience to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The main structural schematic diagram of the utility model is shown.

[0025] Figure 2 A schematic diagram of the front cross-sectional structure of the utility model is shown.

[0026] Figure numerals: 1, housing, 2, hydraulic rod, 3, piston, 4, first oil port, 5, second oil port, 6, fixed shell, 7, plug-in slot, 8, rotating rod, 9, limit slot, 10, limit block, 11, worm gear, 12, worm, 13, driving member, 14, first sealing ring, 15, second sealing ring. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0028] The utility model provides a built-in swing type hydraulic driving device, comprising:

[0029] A housing 1, the interior of which is filled with hydraulic oil;

[0030] A hydraulic rod 2 is disposed in the housing 1, and one end of the hydraulic rod extends over a side wall of the housing 1;

[0031] A swinging member is provided at one end of the hydraulic rod 2 located outside the housing 1;

[0032] A piston 3 is provided on the outer surface of the hydraulic rod 2 located inside the housing 1;

[0033] The piston 3 is fixedly mounted on the outer surface of the hydraulic rod 2 and can be fixed relatively thereto;

[0034] The first oil port 4 is provided on the outer wall surface of one end of the housing 1 and is communicated with the housing 1;

[0035] The first oil port 4 can facilitate external hydraulic oil to flow into or out of the housing 1;

[0036] The second oil port 5 is provided on the outer wall of the housing 1 and is located at an end away from the first oil port 4;

[0037] The second oil port 5 can facilitate external hydraulic oil to flow into or out of the housing 1;

[0038] The driving mechanism is arranged on one end surface of the housing 1 and is used to drive the hydraulic rod 2 to swing.

[0039] Specifically, the driving mechanism includes:

[0040] A fixed shell 6 is fixedly mounted on the outer wall of the shell 1;

[0041] A plug-in slot 7 is formed at one end of the hydraulic rod 2 located inside the housing 1;

[0042] A rotating rod 8, one end of which is rotatably connected to the inner wall of the fixed shell 6, and the other end of which penetrates the side wall of the shell 1 and is plugged into the plug-in slot 7;

[0043] A limiting groove 9 is formed on the inner wall surface of the plug-in groove 7;

[0044] The limiting block 10 is fixedly mounted on the outer surface of the rotating rod 8 and is slidably connected to the limiting groove 9;

[0045] The rotation of the rotating rod 8 can drive the limiting block 10 to rotate, and under the action of the limiting groove 9, the hydraulic rod 2 can be rotated at the same time.

[0046] Specifically, it also includes;

[0047] The worm gear 11 is disposed in the fixed housing 6 and fixedly mounted on the outer surface of the rotating rod 8;

[0048] The worm 12 is rotatably mounted in the fixed housing 6 and meshedly connected with the worm wheel 11;

[0049] The driving member 13 is disposed on the outer surface of the fixed housing 6, and the output end thereof is fixedly connected to one end of the worm 12;

[0050] The driving member 13 is a motor, which is fixedly mounted on the outer surface of the fixed shell 6. The rotation of its output end can drive the worm 12 to rotate, and the rotation of the worm 12 can drive the worm wheel 11 and the rotating rod 8 to rotate simultaneously.

[0051] Specifically, a plurality of first annular grooves are formed on the outer surface of the piston 3, and a first sealing ring 14 is arranged in the first annular groove. The outer surface of the first sealing ring 14 contacts the inner wall surface of the housing 1;

[0052] The first sealing ring 14 can improve the sealing performance and prevent the oil on one side of the piston 3 from leaking to the other side.

[0053] Specifically, a second annular groove is formed in the side wall of the housing 1, a second sealing ring 15 is arranged in the second annular groove, and the inner surface of the second sealing ring 15 contacts the outer surface of the hydraulic rod 2;

[0054] The second sealing ring 14 can improve the sealing performance of the housing 1 and prevent the hydraulic oil in the housing 1 from leaking when the hydraulic rod 2 moves.

[0055] Working principle: the staff transports the external hydraulic oil into the shell 1 through the second oil port 5, which can make the piston 3 drive the hydraulic rod 2 to move and extend the hydraulic rod 2 out of the shell 1. At the same time, when the hydraulic oil is transported to the first oil port 4, the piston 3 can drive the hydraulic rod 2 to move and shrink it back into the shell 1. At the same time, the staff drives the driving member 13, and the rotation of its output end can drive the worm 12 to rotate. The rotation of the worm 12 can drive the worm wheel 11 and the rotating rod 8 to rotate at the same time. At this time, under the action of the limit groove 9 and the limit block 10, the hydraulic rod 2 can be rotated at the same time, and the rotation of the hydraulic rod 2 can drive the swinging member to swing, which brings convenience to people.

[0056] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0057] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0058] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0059] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0060] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. Built-in swing hydraulic drive device, characterized in that: include; A housing (1) filled with hydraulic oil; A hydraulic rod (2) is disposed in the housing (1), and one end of the hydraulic rod extends beyond a side wall of the housing (1); A piston (3) is arranged on the outer surface of the hydraulic rod (2) located inside the housing (1); A first oil port (4) is provided on an outer wall surface of one end of the housing (1) and is in communication with the housing (1); A second oil port (5) is provided on the outer wall surface of the housing (1) and is located at an end away from the first oil port (4); A driving mechanism is arranged on one end surface of the housing (1) and is used to drive the hydraulic rod (2) to swing.

2. The built-in swing hydraulic drive device according to claim 1, characterized in that: The driving mechanism comprises: A fixed shell (6) fixedly mounted on the outer wall surface of the shell (1); A plug-in slot (7) formed at one end of the hydraulic rod (2) located inside the housing (1); A rotating rod (8), one end of which is rotatably connected to the inner wall surface of the fixed shell (6), and the other end of which penetrates the side wall of the shell (1) and is plugged into the plug-in slot (7); A limiting groove (9) formed on the inner wall surface of the plug-in groove (7); The limiting block (10) is fixedly mounted on the outer surface of the rotating rod (8) and is slidably connected to the limiting groove (9).

3. The built-in swing type hydraulic drive device according to claim 2, characterized in that: Also includes; A worm wheel (11) is disposed in the fixed housing (6) and fixedly mounted on the outer surface of the rotating rod (8); A worm (12) is rotatably mounted in the fixed housing (6) and meshingly connected with the worm wheel (11); The driving member (13) is arranged on the outer surface of the fixed shell (6), and the output end is fixedly connected to one end of the worm (12).

4. The built-in swing type hydraulic drive device according to claim 1, characterized in that: A plurality of first annular grooves are formed on the outer surface of the piston (3), a first sealing ring (14) is arranged in the first annular groove, and the outer surface of the first sealing ring (14) contacts the inner wall surface of the housing (1).

5. The built-in swing type hydraulic drive device according to claim 1, characterized in that: A second annular groove is formed in the side wall of the housing (1), a second sealing ring (15) is arranged in the second annular groove, and the inner surface of the second sealing ring (15) contacts the outer surface of the hydraulic rod (2).

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