Oil cylinder of 90-degree rotary connecting rod mechanism

Abstract

The invention relates to the technical field of oil cylinders, and discloses a 90-degree rotary connecting rod mechanism oil cylinder which structurally comprises a cylinder body, a cavity and a driving chamber are arranged in the cylinder body, the cavity and the driving chamber are communicated through a communicating hole, a piston rod is arranged in the cavity, the other end of the piston rod movably penetrates through the communicating hole and extends into the driving chamber, and the driving chamber is arranged in the cavity. The cavity is rectangular, a piston piece is installed in the cavity in a matched mode, an open groove is formed in the middle of the piston piece, and a first sealing piece and a second sealing piece are installed in the open groove. The first sealing piece and the second sealing piece make contact with the inner wall of the cavity, so that the phenomenon that the piston piece and the cavity cannot be sealed due to abrasion of the first sealing piece and the second sealing piece is avoided, and the replacement frequency of the first sealing piece and the second sealing piece is reduced; the service life of the first sealing piece and the second sealing piece is prolonged, and the sealing effect of the oil cylinder in the using process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinders, in particular to an oil cylinder with a 90-degree rotating connecting rod mechanism. Background Art

[0002] The 90° rotating mechanism cylinder is used for the "nesting" part of the aluminum die-casting mold, that is, the cavity and the core, and is clamped by rotating the rod of the cylinder 90°. Traditional products use a "rack and pinion structure" to achieve 90° rotation, but there are the following problems: 1. The traditional "rack and pinion structure" uses involute gears, so it is difficult to achieve high power transmission. (Increasing the module of the gear will easily lead to an increase in volume). Due to operator errors and other reasons, the involute gear may not be able to withstand unexpected loads, resulting in gear damage.

[0003] 2. The traditional "rack and pinion structure" uses involute gears, which has backlash, low responsiveness and stopping accuracy.

[0004] 3. With the miniaturization of molds, the installation space of the 90° rotating mechanism cylinder becomes narrow, and its volume cannot meet the current miniaturization requirements.

[0005] 4. The traditional "rack and pinion structure" uses involute gears, which requires a "tooth cutting" process, which prolongs the production delivery cycle. In addition, the tooth cutting process also increases costs.

[0006] 5. Traditional piston seals are an integral structure, and once they are worn, they will not be able to fully perform the sealing effect.

[0007] 6. The traditional sleeve and drive shaft will wear out too quickly due to the increase in temperature after long-term use, thus shortening the service life of the cylinder parts. For this reason, a new technical solution needs to be designed to solve the problem. Summary of the invention

[0008] The purpose of the present invention is to solve the problems existing in the prior art and to propose a 90° rotating connecting rod mechanism oil cylinder.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a 90° rotating connecting rod mechanism oil cylinder, comprising a cylinder body, a chamber and a driving chamber are arranged in the cylinder body, the chamber and the driving chamber are connected through a connecting hole, a piston rod is arranged inside the chamber, the other end of the piston rod movably passes through the connecting hole to the driving chamber, and a guide is installed, the chamber is rectangular, and a piston member is installed inside, the middle of the piston member is slotted, a first sealing member and a second sealing member are respectively installed inside the slot, the first sealing member is connected to a spring member through two groups of limiting holes, one side of one group of the limiting holes is connected to form a limiting track groove, two groups of limiting columns corresponding to the limiting holes are installed on the second sealing member, and blocks are fixedly installed on both sides of the second sealing member; A shaft sleeve is installed in the driving chamber, the driving shaft is rotatably installed in the shaft sleeve, the arc groove is adapted to the shaft sleeve, a guide groove is opened on one side of the inner wall of the driving chamber, one end of the guide member is movably arranged in the guide groove and adapted to the guide groove, the guide member is L-shaped as a whole, and an arc groove is arranged at its inner corner position; A piston is installed at the connecting end of the guide member and the guide groove, and a flow channel connected to the driving chamber is opened on one side of the guide groove, and a metal heat absorbing plate is fixedly connected to the inside of the flow channel, and the other end of the metal heat absorbing plate extends to the outside of the flow channel and is connected to a heat sink through silicone, and the periphery of the heat sink is connected to a heat dissipation fan blade through a mounting frame, and the other end of the heat dissipation fan blade is connected to the second bevel gear through a first bevel gear, and the other end of the second bevel gear is connected to the third bevel gear through a driving shaft, and a fourth bevel gear is installed on the other end of the third bevel gear, and a bearing seat is installed on the outside of the driving shaft.

[0010] As a preferred embodiment of the present invention, oil inlet and outlet are provided on both sides of the chamber, and the other side of the oil inlet and outlet extends to the outside of the cylinder body.

[0011] As a preferred embodiment of the present invention, the cylinder body is designed as a plate as a whole.

[0012] As a preferred embodiment of the present invention, the outer diameter of the piston matches the inner diameter of the guide groove and is slidably connected to its inner wall, and one end of the piston is fixedly connected to the connecting end of the guide groove of the guide member.

[0013] As a preferred embodiment of the present invention, a connecting rod is rotatably mounted on the guide member via a rotating shaft, a driving shaft is mounted on the other end of the connecting rod via the rotating shaft, the driving shaft is rotatably connected to the cylinder body, and one end thereof extends outside the cylinder body.

[0014] As a preferred embodiment of the present invention, one end of the piston rod is fixedly connected to one end of the guide member, and the other end of the piston rod is fixedly connected to one end of the piston member, and the piston member is slidably connected to the inner wall of the chamber through a first seal and a second seal.

[0015] As a preferred embodiment of the present invention, the size of the first seal and the second seal is consistent with the size of the groove, and is slidably connected to the inner wall thereof, the spring member is movably connected to the inside of the limiting hole, the outer diameter of the limiting column is consistent with the inner diameter of the limiting hole, and is slidably connected to the inner wall thereof, one end of the limiting column is fixedly connected to the end face of the second seal, the other end of the limiting column abuts against one end of the spring member, the length of the blocking block is 1 / 3 of the limiting track groove, and is slidably connected to the inside thereof.

[0016] As a preferred embodiment of the present invention, the mounting frame is fixedly connected to the inner wall of the cylinder body, both ends of the heat sink are fixedly connected to the mounting frame, one end of the heat dissipation fan blade is rotatably connected to the inside of the mounting frame through a bearing, and extends to the outside of the mounting frame and is fixedly connected to one end of the first bevel gear.

[0017] As a preferred embodiment of the present invention, one end of the second bevel gear is meshed with the other end of the first bevel gear, the other end of the second bevel gear is fixedly connected to one end of the driving shaft, the other end of the driving shaft is fixedly connected to one end of the third bevel gear, the other end of the third bevel gear is meshed with one end of the fourth bevel gear, and the other end of the fourth bevel gear is fixedly connected at the center of the driving shaft.

[0018] As a preferred embodiment of the present invention, the outer portion of the bearing seat is fixedly connected to the inner wall of the cylinder body, and the inner ring of the bearing seat is fixedly connected to the outer surface of the driving shaft.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a connecting rod design as a power transmission component. Due to the simple structure of the connecting rod mechanism, high power transmission and high strength are achieved. Compared with the traditional rack and pinion structure, the connecting rod mechanism is easier to miniaturize. Moreover, since the connecting rod mechanism does not require a tooth cutting process, it shortens the production delivery cycle and reduces costs.

[0020] 2. When the oil cylinder of the present invention is in use, the piston rod will drive the piston member to move inside the chamber. During this process, the first seal and the second seal on the piston member will slide on the inner wall of the chamber. After long-term use, the first seal and the second seal will be worn. At this time, the spring member will generate a rebound force on the limit column, so that a part of the limit column moves out of the limit hole. At the same time, the block will slide inside the limit track groove, so that the first seal and the second seal are in contact with the inner wall of the chamber, so as to avoid the first seal and the second seal from being unable to seal the piston member and the chamber due to wear, reduce the number of replacement times of the first seal and the second seal, extend the service life of the first seal and the second seal, and improve the sealing effect of the oil cylinder during use.

[0021] 3. When the driving shaft of the oil cylinder rotates, oil is injected through the two oil inlets and outlets to realize the movement of the piston member, realize the linear movement of the guide member, and realize the rotation of the driving shaft by using the connecting rod. When the guide member moves downward in the guide groove through the piston, the coolant in the guide groove will be transported to the driving chamber through the flow channel. At this time, the coolant will absorb the heat of the shaft sleeve and the driving shaft. When the piston moves upward in the guide groove, the coolant in the driving chamber will be drawn back into the guide groove through the flow channel. During this process, the fourth bevel gear will rotate with the driving shaft. At this time, the fourth bevel gear will drive the driving shaft to rotate in the bearing seat through the third bevel gear, and then the other end of the driving shaft will drive the first bevel gear to rotate through the second bevel gear, and then the first bevel gear will drive the heat dissipation fan blades to rotate, so as to dissipate heat to the heat sink. During this process, the heat sink will absorb the heat of the coolant in the flow channel, thereby preventing the temperature between the shaft sleeve and the driving shaft from being too high and causing it to be damaged too quickly, thereby improving the wear resistance between the driving shaft and the shaft sleeve, and further extending the service life of the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 This is a front view of the 90° rotating connecting rod mechanism oil cylinder proposed by the present invention; Figure 2 A side view of the 90° rotating connecting rod mechanism oil cylinder proposed by the present invention; Figure 3 This is a schematic diagram of the motion state of the 90° rotating connecting rod mechanism oil cylinder proposed by the present invention; Figure 4 This is a schematic diagram of the piston rod structure of the 90° rotating connecting rod mechanism oil cylinder proposed by the present invention; Figure 5 This is an expanded view of the first seal and the second seal of the 90° rotating connecting rod mechanism oil cylinder proposed by the present invention; Figure 6 A top view of the first seal and the second seal of the 90° rotating connecting rod mechanism oil cylinder proposed by the present invention; Figure 7 This is an enlarged view of the flow channel of the 90° rotating connecting rod mechanism oil cylinder proposed by the present invention.

[0023] In the figure: 1, cylinder body; 2, chamber; 3, drive chamber; 4, connecting hole; 5, oil inlet and outlet; 6, piston rod; 7, guide member; 8, connecting rod; 9, drive shaft; 10, sleeve; 11, guide groove; 12, arc groove; 13, piston member; 14, slot; 15, first sealing member; 16, second sealing member; 17, limit hole; 18, spring member; 19, limit track groove; 20. Limiting column; 21. Block; 22. Piston; 23. Flow channel; 24. Metal heat absorbing plate; 25. Heat sink; 26. Mounting frame; 27. Heat dissipation fan blade; 28. First bevel gear; 29. ​​Second bevel gear; 30. Driving shaft; 31. Third bevel gear; 32. Fourth bevel gear; 33. Bearing seat. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Example 1: 90° rotating connecting rod mechanism cylinder, see Figures 1 to 7 , including a cylinder body 1, a chamber 2 and a driving chamber 3 are arranged in the cylinder body 1, the chamber 2 and the driving chamber 3 are connected through a connecting hole 4, oil inlet and outlet 5 are opened on both sides of the chamber 2, and the other side of the oil inlet and outlet 5 extends to the outside of the cylinder body 1, a piston rod 6 is arranged inside the chamber 2, the other end of the piston rod 6 movably passes through the connecting hole 4 to the driving chamber 3, and is installed with a guide member 7, a connecting rod 8 is rotatably installed on the guide member 7 through a rotating shaft, and a driving shaft 9 is installed on the other end of the connecting rod 8 through a rotating shaft, the driving shaft 9 is rotatably connected to the cylinder body 1, and one end thereof extends to the outside of the cylinder body 1.

[0027] When the device is in use, oil is injected through the two oil inlets and outlets 5 to realize the movement of the piston member 13, realize the linear movement of the guide member 7, and use the connecting rod 8 to realize the rotation of the drive shaft 9. Compared with the prior art, the oil cylinder adopts the connecting rod 8 as the power transmission component. Since the connecting rod 8 has a simple structure, high power transmission and high strength are achieved. Compared with the traditional rack and pinion structure, the connecting rod 8 is easier to miniaturize. Moreover, since the connecting rod 8 does not require a tooth cutting process, it shortens the production delivery cycle and reduces costs.

[0028] In this embodiment, a guide groove 11 is opened on one side of the inner wall of the driving chamber 3, and one end of the guide member 7 is movably arranged in the guide groove 11 and adapted to the guide groove 11. Through the designed guide groove 11 structure, the oil cylinder does not need to consider the backlash problem of the traditional "rack and gear structure" due to the use of involute gears, and its linear guide structure can effectively improve the responsiveness and stopping accuracy.

[0029] In this embodiment, the guide member 7 is L-shaped as a whole, and an arc groove 12 is provided at its inner corner position. A shaft sleeve 10 is installed in the driving chamber 3, and the driving shaft 9 is rotatably installed in the shaft sleeve 10. The arc groove 12 is adapted to the shaft sleeve 10. The design of the arc groove 12 is to adapt to the movement of the guide member 7 to the shaft sleeve 10, which is conducive to further streamlining the space.

[0030] In this embodiment, the cylinder body 1 is designed as a plate as a whole.

[0031] In this embodiment, the chamber 2 is rectangular, and a piston member 13 is installed inside. A slot 14 is formed in the middle of the piston member 13, and a first sealing member 15 and a second sealing member 16 are installed inside the slot 14 respectively. The first sealing member 15 is connected to a spring member 18 through two groups of limiting holes 17, and one side of one group of limiting holes 17 is connected to a limiting track groove 19. Two groups of limiting columns 20 corresponding to the limiting holes 17 are installed on the second sealing member 16, and blocks 21 are fixedly installed on both sides of the second sealing member 16. One end of the piston rod 6 is fixedly connected to one end of the guide member 7, and the other end of the piston rod 6 is fixedly connected to the piston member 13. At one end, the piston member 13 is slidably connected to the inner wall of the chamber 2 through the first sealing member 15 and the second sealing member 16. The size of the first sealing member 15 and the second sealing member 16 matches the size of the slot 14 and is slidably connected to its inner wall. The spring member 18 is movably connected to the inside of the limiting hole 17. The outer diameter of the limiting column 20 matches the inner diameter of the limiting hole 17 and is slidably connected to its inner wall. One end of the limiting column 20 is fixedly connected to the end face of the second sealing member 16, and the other end of the limiting column 20 abuts against one end of the spring member 18. The length of the block 21 is 1 / 3 of the limiting track groove 19 and is slidably connected to its interior.

[0032] When the device is in use, the piston rod 6 will drive the piston member 13 to move inside the chamber 2. During this process, the first seal 15 and the second seal 16 on the piston member 13 will slide on the inner wall of the chamber 2. The first seal 15 and the second seal 16 will wear out after long-term use. At this time, the spring member 18 will limit the column 20 to generate a rebound force, so that a part of the limit column 20 moves out of the inside of the limit hole 17, and the block 21 will slide inside the limit track groove 19, so that the first seal 15 and the second seal 16 are in contact with the inner wall of the chamber 2 here, so as to avoid the first seal 15 and the second seal 16 from being unable to seal the piston member 13 and the chamber 2 due to wear, reduce the number of replacement times of the first seal 15 and the second seal 16, extend the service life of the first seal 15 and the second seal 16, and improve the sealing effect of the cylinder during use.

[0033] In this embodiment, a piston 22 is installed at the connecting end of the guide member 7 and the guide groove 11, and a flow channel 23 communicating with the driving chamber 3 is opened on one side of the guide groove 11. A metal heat absorbing plate 24 is fixedly connected to the inside of the flow channel 23, and the other end of the metal heat absorbing plate 24 extends to the outside of the flow channel 23 and is connected to a heat sink 25 through silicone. The periphery of the heat sink 25 is connected to a heat dissipation fan blade 27 through a mounting frame 26, and the other end of the heat dissipation fan blade 27 is connected to a second bevel gear 29 through a first bevel gear 28, and the other end of the second bevel gear 29 is connected to a third bevel gear 31 through a driving shaft 30. A fourth bevel gear 32 is installed at the other end of the third bevel gear 31, and a bearing seat 33 is installed on the outside of the driving shaft 30. The outer diameter of the piston 22 matches the inner diameter of the guide groove 11 and is slidably connected to its inner wall. One end of the piston 22 is fixedly connected to the guide groove 11 connected to the guide groove 11. The connecting end of the groove 11, the mounting frame 26 is fixedly connected to the inner wall of the cylinder body 1, both ends of the heat sink 25 are fixedly connected to the mounting frame 26, one end of the heat dissipation fan blade 27 is rotatably connected to the inside of the mounting frame 26 through a bearing, and extends to the outside of the mounting frame 26 and is fixedly connected to one end of the first bevel gear 28, one end of the second bevel gear 29 is meshed with the other end of the first bevel gear 28, the other end of the second bevel gear 29 is fixedly connected to one end of the drive shaft 30, the other end of the drive shaft 30 is fixedly connected to one end of the third bevel gear 31, the other end of the third bevel gear 31 is meshed with one end of the fourth bevel gear 32, the other end of the fourth bevel gear 32 is fixedly connected to the center of the drive shaft 9, the outside of the bearing seat 33 is fixedly connected to the inner wall of the cylinder body 1, and the inner ring of the bearing seat 33 is fixedly connected to the outer surface of the drive shaft 30.

[0034] When the device is in use, when the drive shaft 9 of the oil cylinder rotates, oil is injected through the two oil inlets and outlets 5 to realize the movement of the piston member 13, realize the linear movement of the guide member 7, and use the connecting rod 8 to realize the rotation of the drive shaft 9. When the guide member 7 moves downward in the guide groove 11 through the piston 22, the coolant in the guide groove 11 will be transported to the drive chamber 3 through the flow channel 23. At this time, the coolant will absorb the heat of the shaft sleeve 10 and the drive shaft 9. When the piston 22 moves upward in the guide groove 11, the coolant in the drive chamber 3 will be drawn back into the guide groove 11 through the flow channel 23. In this process, the fourth bevel gear 32 will follow Rotating together with the driving shaft 9, the fourth bevel gear 32 will drive the driving shaft 30 to rotate in the bearing seat 33 through the third bevel gear 31, and then the other end of the driving shaft 30 will drive the first bevel gear 28 to rotate through the second bevel gear 29, and then the first bevel gear 28 will drive the heat dissipation fan blades 27 to rotate, so as to dissipate heat from the heat sink 25. In this process, the heat sink 25 will absorb the heat of the coolant in the flow channel 23, thereby preventing the temperature between the sleeve 10 and the driving shaft 9 from being too high and causing it to be damaged too quickly, thereby improving the wear resistance between the driving shaft 9 and the sleeve 10, and further extending the service life of the cylinder.

[0035] It should be noted that the guide groove 11 is filled with coolant, and a heat dissipation window (such as Figure 1 and Figure 3 As shown in the figure, when the heat dissipation fan blade 27 rotates clockwise or counterclockwise, air can be blown toward the heat dissipation fin 25 or drawn toward the right side of the heat dissipation fan blade 27. The heat dissipation fin 25 adopts fin heat dissipation. No matter from which direction, the hot air flow can be discharged from the heat dissipation window. The heat dissipation fan blade 27 can also adopt a side suction type, which depends on the shape of the heat dissipation fan blade 27. In the cylinder body 1, the position where the heat dissipation fan blade 27 is installed also has a chamber (such as Figure 1 and Figure 3 As shown), the heat dissipation window extends from the surface of the cylinder body 1 into the chamber; The electrical components in the present invention are all controlled by a controller.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A 90° rotating connecting rod mechanism oil cylinder, comprising a cylinder body (1), characterized in that: The cylinder body (1) is provided with a chamber (2) and a driving chamber (3), the chamber (2) and the driving chamber (3) are connected via a connecting hole (4), a piston rod (6) is provided inside the chamber (2), the other end of the piston rod (6) movably passes through the connecting hole (4) to the driving chamber (3), and is provided with a guide member (7); A shaft sleeve (10) is installed in the driving chamber (3), the driving shaft (9) is rotatably installed in the shaft sleeve (10), the arc groove (12) is adapted to the shaft sleeve (10), a guide groove (11) is provided on one side of the inner wall of the driving chamber (3), one end of the guide member (7) is movably arranged in the guide groove (11) and adapted to the guide groove (11), the guide member (7) is L-shaped as a whole, and an arc groove (12) is provided at an inner corner position thereof; A piston (22) is installed at the connecting end of the guide member (7) and the guide groove (11); a flow channel (23) communicating with the drive chamber (3) is opened on one side of the guide groove (11); a metal heat absorbing plate (24) is fixedly connected to the inside of the flow channel (23); the other end of the metal heat absorbing plate (24) extends to the outside of the flow channel (23) and is connected to a heat sink (25) via silicone; the periphery of the heat sink (25) is connected to a heat dissipation blade (27) via a mounting frame (26); the other end of the heat dissipation blade (27) is connected to a second bevel gear (29) via a first bevel gear (28); the other end of the second bevel gear (29) is connected to a third bevel gear (31) via a driving shaft (30); the other end of the third bevel gear (31) is installed with a fourth bevel gear (32); and a bearing seat (33) is installed on the outside of the driving shaft (30).

2. The 90° rotating connecting rod mechanism oil cylinder according to claim 1, characterized in that: Oil inlets and outlets (5) are provided on both sides of the chamber (2), and the other side of the oil inlets and outlets (5) extends outside the cylinder body (1).

3. The 90° rotating connecting rod mechanism oil cylinder according to claim 1, characterized in that: The cylinder body (1) is overall in a plate-like design.

4. The 90° rotating connecting rod mechanism oil cylinder according to claim 1, characterized in that: The outer diameter of the piston (22) matches the inner diameter of the guide groove (11) and is slidably connected to the inner wall thereof. One end of the piston (22) is fixedly connected to the connecting end of the guide groove (11) of the guide member (7).

5. The 90° rotating connecting rod mechanism oil cylinder according to claim 1, characterized in that: A connecting rod (8) is rotatably mounted on the guide member (7) via a rotating shaft, and a driving shaft (9) is mounted on the other end of the connecting rod (8) via the rotating shaft. The driving shaft (9) is rotatably connected to the cylinder body (1), and one end of the driving shaft extends outside the cylinder body (1).

6. The 90° rotating connecting rod mechanism oil cylinder according to claim 1, characterized in that: One end of the piston rod (6) is fixedly connected to one end of the guide member (7), and the other end of the piston rod (6) is fixedly connected to one end of the piston member (13). The piston member (13) is slidably connected to the inner wall of the chamber (2) via a first sealing member (15) and a second sealing member (16).

7. The 90° rotating connecting rod mechanism oil cylinder according to claim 1, characterized in that: The chamber (2) is rectangular and has a piston member (13) installed therein. A slot (14) is formed in the middle of the piston member (13). A first sealing member (15) and a second sealing member (16) are installed in the slot (14). The first sealing member (15) is connected to a spring member (18) via two groups of limiting holes (17). One side of one group of the limiting holes (17) is connected to a limiting track groove (19). Two groups of limiting columns (20) corresponding to the limiting holes (17) are installed on the second sealing member (16). Blocks (21) are fixedly installed on both sides of the second sealing member (16). The sizes of the sealing member (15) and the second sealing member (16) match the size of the slot (14) and are slidably connected to the inner wall thereof; the spring member (18) is movably connected to the inside of the limiting hole (17); the outer diameter of the limiting column (20) matches the inner diameter of the limiting hole (17) and is slidably connected to the inner wall thereof; one end of the limiting column (20) is fixedly connected to the end face of the second sealing member (16); the other end of the limiting column (20) abuts against one end of the spring member (18); the length of the clamping block (21) is 1 / 3 of the limiting track slot (19) and is slidably connected to the inside thereof.

8. The 90° rotating connecting rod mechanism oil cylinder according to claim 1, characterized in that: The mounting frame (26) is fixedly connected to the inner wall of the cylinder body (1), the two ends of the heat sink (25) are fixedly connected to the mounting frame (26), one end of the heat dissipation fan blade (27) is rotatably connected to the inside of the mounting frame (26) through a bearing, and extends to the outside of the mounting frame (26) and is fixedly connected to one end of the first bevel gear (28).

9. The 90° rotating connecting rod mechanism oil cylinder according to claim 1, characterized in that: One end of the second bevel gear (29) is meshed with the other end of the first bevel gear (28), the other end of the second bevel gear (29) is fixedly connected to one end of the driving shaft (30), the other end of the driving shaft (30) is fixedly connected to one end of the third bevel gear (31), the other end of the third bevel gear (31) is meshed with one end of the fourth bevel gear (32), and the other end of the fourth bevel gear (32) is fixedly connected to the center of the driving shaft (9).

10. The 90° rotating connecting rod mechanism oil cylinder according to claim 9, characterized in that: The exterior of the bearing seat (33) is fixedly connected to the inner wall of the cylinder body (1), and the inner ring of the bearing seat (33) is fixedly connected to the outer surface of the driving shaft (30).

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