Oil cylinder cover anti-loosening structure in oil cylinder

Abstract

The utility model discloses an oil cylinder cover anti-loosening structure in an oil cylinder, and relates to the technical field of oil cylinders. The cylinder comprises a cylinder body and a top cover installed at the top end in the cylinder body, a sealing gasket is bonded to the edge of the outer side of the bottom of the top cover, an insertion ring is fixedly connected to the center of the bottom of the top cover, sealing rings are bonded to the edges of the tops of the inner wall and the outer wall of the insertion ring, and through grooves are evenly formed in the outer wall of the cylinder body at intervals in the circumferential direction. A limiting assembly is arranged in the through groove, and the outer side of the through groove is rotationally connected with a rotating ring. Through the limiting assembly and the rotating ring, the extrusion plate on the inner wall of the rotating ring is used for applying force to the inserting plate, the inserting plate rotates with the rotating shaft as the circle center under the elastic performance of the torsional spring, the limiting effect of the end of the inserting plate on the inserting hole in the inserting ring is achieved or eliminated, and a worker can rapidly disassemble, assemble and replace the top cover conveniently; the sealing gasket and the sealing ring can improve the sealing effect, and the sealing performance of the joint of the cylinder body and the top cover is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil cylinders, and particularly relates to a loosening prevention structure for an oil cylinder cover inside an oil cylinder. Background Art

[0002] An oil cylinder, namely a hydraulic cylinder, is a linear motion type actuator whose output force is proportional to the effective area of the piston and the pressure difference on both sides. It converts hydraulic energy into mechanical energy. The input quantities of the hydraulic cylinder are the flow rate and pressure of the fluid, and the outputs are the linear motion speed and force. The piston of the hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is limited. The hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy of reciprocating linear motion. The hydraulic cylinder basically consists of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. Moreover, when installing the cylinder head, a loosening prevention structure is required to limit its position, which can increase the stability of the cylinder head.

[0003] After retrieval, the publication number CN105221516A, and the application date October 28, 2015 disclose a loosening prevention type oil cylinder cover structure, which includes a cylinder block, a cylinder head and a live rod. The cylinder head includes an insertion cylinder and a flange plate connected coaxially. The insertion cylinder is inserted into one end of the cylinder block, and the outer wall of the insertion cylinder is in close contact and sealed with the inner wall of the cylinder block. The diameter of the flange plate corresponds to the outer diameter of the cylinder block. A number of threaded holes are distributed on the end face of the cylinder block, and through holes are arranged at the corresponding positions of the flange plate with respect to each of the threaded holes. Screws pass through the through holes and cooperate with the threaded holes. A threaded through hole is arranged on the side surface of the cylinder block, and a slot hole corresponding to the position of the threaded through hole is arranged on the side surface of the insertion cylinder. A positioning bolt cooperates with the threaded through hole and is inserted into the slot hole.

[0004] However, it still has the following drawbacks in actual use:

[0005] The above loosening prevention type oil cylinder cover structure fixes and installs the cylinder head through nuts, screws and bolts, and this method is rather cumbersome and time-consuming and laborious for workers to operate, resulting in low work efficiency.

[0006] 2. When the above loosening prevention type oil cylinder cover structure is in use, the insertion cylinder and the cylinder head are directly inserted into the cylinder block, and there is a lack of sealing measures between the contact surfaces of the insertion cylinder and the cylinder head and the cylinder block, resulting in poor sealing performance, which may affect the normal use of the oil cylinder. Therefore, we provide a loosening prevention structure for an oil cylinder cover inside an oil cylinder to solve the above problems. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide an anti-loosening structure for the cylinder head inside the oil cylinder. By setting a limiting component and a rotating ring, the pressing plate on the inner wall of the rotating ring applies force to the inserting plate, and under the elastic performance of the torsion spring, the inserting plate rotates around the rotating shaft, realizing or canceling the limiting effect of the end of the inserting plate on the inserting hole on the inserting ring, facilitating the staff to quickly disassemble, install and replace the top cover, saving time and effort, with high work efficiency, and the sealing effect can be improved by using the sealing gasket and the sealing ring to ensure the sealing performance at the connection between the cylinder body and the top cover.

[0008] To solve the above technical problems, the present utility model is realized through the following technical solutions:

[0009] The present utility model is an anti-loosening structure for the cylinder head inside the oil cylinder, including a cylinder body and a top cover installed at the inner top end thereof. A sealing gasket is adhesively bonded to the outer edge of the bottom of the top cover, and an inserting ring is fixedly connected to the center position of the bottom of the top cover. Sealing rings are adhesively bonded to the top edges of the inner and outer walls of the inserting ring. Through grooves are evenly spaced along the circumferential direction on the outer wall of the cylinder body, a limiting component is arranged inside the through grooves, and a rotating ring is rotatably connected to the outside of the through grooves;

[0010] The limiting component includes an inserting plate and a rotating shaft installed in the middle of its inner wall. A torsion spring is sleeved on the middle section of the outer wall of the rotating shaft.

[0011] The present utility model is further provided that a fixing ring is fixedly connected above the inner wall of the cylinder body, and a slot is arranged at the center position of the upper surface of the fixing ring.

[0012] The present utility model is further provided that the outer wall of the slot is connected to the adjacent through groove in a penetrating manner, and annular grooves are arranged above and below the outside of the through groove.

[0013] The present utility model is further provided that limiting grooves are evenly spaced along the circumferential direction at the top edge of the inner wall of the cylinder body, and sliding blocks are fixedly connected evenly spaced along the circumferential direction at the bottom edge of the outer wall of the cylinder body.

[0014] The present utility model is further provided that the sliding blocks are located inside the limiting grooves, inserting holes are evenly spaced along the circumferential direction on the outer wall of the inserting ring, and the inserting ring is located inside the slot.

[0015] The present utility model is further provided that both ends of the rotating shaft are respectively rotatably connected inside the bearings on the inner wall of the through groove, and the shape of the inserting plate is L-shaped.

[0016] The present utility model is further provided that annular plates are fixedly connected to the top and bottom edges of the inner wall of the rotating ring, and pressing plates are fixedly connected evenly spaced along the circumferential direction on the inner wall of the rotating ring.

[0017] The present utility model is further provided that the annular plates are located inside the adjacent annular grooves, the cross-section of the pressing plate is triangular, and the pressing plate is located inside the through groove.

[0018] The utility model has the following beneficial effects:

[0019] By arranging a limiting component and a rotating ring, the utility model applies force to the insertion plate through the extrusion plate on the inner wall of the rotating ring, and under the elastic performance of the torsion spring, the insertion plate rotates around the rotating shaft, realizing or canceling the limiting effect of the end of the insertion plate on the insertion hole on the insertion ring, facilitating the staff to quickly disassemble, assemble and replace the top cover, saving time and effort, with high work efficiency, and solving the problem that when the anti-loosening oil cylinder cover structure is used, the cylinder cover is fixedly installed through nuts, screw rods and screws, and this method is rather cumbersome in operation by the staff, time-consuming and laborious, resulting in low work efficiency.

[0020] By arranging a gasket and a sealing ring, the utility model can improve the sealing effect under the action of the gasket and the two groups of sealing rings, ensuring the sealing performance at the connection between the cylinder body and the top cover, and solving the problem that when the anti-loosening oil cylinder cover structure is used, the insertion cylinder and the cylinder cover are directly inserted into the cylinder body, but there is a lack of sealing measures between the contact surfaces of the insertion cylinder and the cylinder cover and the cylinder body, with poor sealing performance, which may affect the normal use of the oil cylinder.

[0021] Certainly, when implementing any product of the utility model, it is not necessarily required to simultaneously achieve all the above-mentioned advantages. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a structural schematic diagram of an anti-loosening structure of an oil cylinder cover inside an oil cylinder.

[0024] Figure 2 It is a cross-sectional view of an anti-loosening structure of an oil cylinder cover inside an oil cylinder.

[0025] Figure 3 It is a cross-sectional view of the cylinder block.

[0026] Figure 4 It is a structural diagram of the cylinder block.

[0027] Figure 5 It is a structural diagram of the top cover.

[0028] Figure 6 It is a structural diagram of the limiting component.

[0029] Figure 7 It is a structural diagram of the rotating ring.

[0030] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0031] 1 - cylinder block, 101 - fixing ring, 101a - slot, 101b - through groove, 102 - annular groove, 103 - limiting groove, 2 - top cover, 201 - gasket, 202 - sealing ring, 203 - slider, 204 - inserting ring, 204a - jack, 3 - limiting component, 301 - inserting plate, 302 - rotating shaft, 303 - torsion spring, 4 - rotating ring, 401 - annular plate, 402 - pressing plate. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] Example 1, please refer to Figures 1 to 5 , the present invention is an anti-loosening structure for an oil cylinder cover inside an oil cylinder, including a cylinder block 1 and a top cover 2 installed at the inner top end thereof. A gasket 201 is adhesively bonded to the outer edge of the bottom of the top cover 2, and an inserting ring 204 is fixedly connected to the center position of the bottom of the top cover 2. Sealing rings 202 are adhesively bonded to both the inner wall and the top edge of the outer wall of the inserting ring 204. Through grooves 101b are evenly spaced along the circumferential direction on the outer wall of the cylinder block 1.

[0034] Specifically, a fixing ring 101 is fixedly connected above the inner wall of the cylinder block 1. A slot 101a is provided at the center position of the upper surface of the fixing ring 101. The outer wall of the slot 101a is connected to the adjacent through groove 101b in a penetrating manner. Annular grooves 102 are provided above and below the outer side of the through groove 101b. Limiting grooves 103 are evenly spaced along the circumferential direction at the top edge of the inner wall of the cylinder block 1. Sliders 203 are fixedly connected at equal intervals along the circumferential direction at the bottom edge of the outer wall of the cylinder block 1. The sliders 203 are located inside the limiting grooves 103. Jacks 204a are evenly spaced along the circumferential direction on the outer wall of the inserting ring 204. The inserting ring 204 is located inside the slot 101a.

[0035] Furthermore, the gasket 201 and the sealing rings 202 can improve the sealing performance at the connection, with good sealing effect. The cross-section of the through groove 101b is L-shaped, and the shape of the limiting groove 103 is L-shaped. The sliders 203 can slide inside the limiting grooves 103, and at the same time, the sliders 203 can be stuck at the horizontal section at the bottom of the limiting grooves 103, with good stability effect.

[0036] The operating process of this embodiment is as follows: after the top cover 2 is installed on the top of the cylinder body 1, the two sets of sealing rings 202 will be pressed onto the surface of the fixing ring 101, which can improve the sealing effect. At the same time, the sealing gasket 201 at the bottom of the top cover 2 will be pressed onto the top of the cylinder body 1, which can further improve the sealing effect and ensure the sealing of the connection between the cylinder body 1 and the top cover 2.

[0037] Example 2, please refer to Figure 1 , Figure 2 , Figure 6 and Figure 7 On the basis of Example 1, what is different from the first embodiment is that: a limit assembly 3 is provided, the limit assembly 3 includes a plug plate 301 and a rotating shaft 302 installed in the middle of its inner wall, a torsion spring 303 is sleeved on the middle section of the outer wall of the rotating shaft 302, and a rotating ring 4 is rotatably connected to the outer side of the through groove 101b, which solves the problem that the existing anti-loosening cylinder head structure uses nuts, screws and screws to fix the cylinder head when in use, and this method is relatively cumbersome and time-consuming and labor-intensive when the staff operates, resulting in low work efficiency.

[0038] Specifically, both ends of the rotating shaft 302 are rotatably connected to the bearings on the inner wall of the through groove 101b, the shape of the insert plate 301 is L-shaped, and the top and bottom edges of the inner wall of the rotating ring 4 are fixedly connected with ring plates 401. The inner wall of the rotating ring 4 is evenly spaced and fixedly connected with extrusion plates 402 along the circumferential direction. The ring plates 401 are located inside the adjacent ring grooves 102. The cross-section of the extrusion plates 402 is triangular, and the extrusion plates 402 are located inside the through groove 101b.

[0039] Furthermore, the elastic properties of the torsion spring 303 can drive the plug plate 301 to rotate, and the plug plate 301 will rotate around the rotating shaft 302 under the force. The rotating ring 4 can rotate under the action of the ring plate 401 and the ring groove 102, and the extrusion plate 402 can apply force to the plug plate 301.

[0040] The operation process of this embodiment is as follows: When installing the top cover 2, the bottom of the top cover 2 is inserted into the top of the cylinder block 1 under the cooperation of the slider 203 and the limiting groove 103. Then, a force is applied to the rotating ring 4 to make the rotating ring 4 rotate with the assistance of the ring plate 401 and the ring groove 102. When the rotating ring 4 rotates, a plurality of pressing plates 402 on its inner wall will rotate synchronously. When the pressing plates 402 rotate, they will press the corresponding plug plates 301 in the through groove 101b. When the outer end of the outer wall of the plug plate 301 is stressed, it will rotate around the rotating shaft 302 and press the torsion spring 303. Therefore, when the plug plate 301 rotates, the end portion of it located inside the slot 101a will move out. Then, the insertion ring 204 at the bottom of the top cover 2 is inserted into the slot 101a on the surface of the fixed ring 101. Then, a force is applied to the top cover 2 to make it rotate, and the slider 203 can be moved to the bottom horizontal section of the L-shaped limiting groove 103. Then, the rotating ring 4 is rotated to the initial position, and the force applied to the rotating ring 4 is stopped. At this time, under the elastic performance of the torsion spring 303, the end portion of the plug plate 301 can be inserted into the corresponding jack 204a on the outer wall of the insertion ring 204, which can play a role in limiting the top cover 2, completing the installation. The disassembly is the same, which is convenient for the staff to quickly disassemble, install and replace the top cover 2, saving time and effort and having high work efficiency.

[0041] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The above-disclosed preferred embodiments of the present invention are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A cylinder head anti-loosening structure in an oil cylinder, comprising a cylinder body (1) and a top cover (2) installed at the top of the cylinder body, characterized in that: A sealing gasket (201) is bonded to the outer edge of the bottom of the top cover (2), an insert ring (204) is fixedly connected to the center of the bottom of the top cover (2), a sealing ring (202) is bonded to the inner wall and the top edge of the outer wall of the insert ring (204), through grooves (101b) are evenly spaced along the circumferential direction on the outer wall of the cylinder body (1), a limit position assembly (3) is arranged inside the through groove (101b), and a rotating ring (4) is rotatably connected to the outer side of the through groove (101b); The position limiting assembly (3) comprises a plug plate (301) and a rotating shaft (302) mounted in the middle of the inner wall thereof, and a torsion spring (303) is sleeved on the middle section of the outer wall of the rotating shaft (302).

2. The anti-loosening structure of the oil cylinder cover in the oil cylinder according to claim 1, characterized in that: A fixing ring (101) is fixedly connected to the upper part of the inner wall of the cylinder body (1), and a slot (101a) is provided at the center position of the upper surface of the fixing ring (101).

3. The anti-loosening structure of the oil cylinder cover in the oil cylinder according to claim 2, characterized in that: The outer wall of the slot (101a) is connected to the adjacent through slot (101b), and annular grooves (102) are provided above and below the outer side of the through slot (101b).

4. The anti-loosening structure of the oil cylinder cover in the oil cylinder according to claim 3, characterized in that: Limiting grooves (103) are evenly spaced along the circumferential direction at the top edge of the inner wall of the cylinder body (1), and sliding blocks (203) are evenly spaced and fixedly connected to the bottom edge of the outer wall of the cylinder body (1) along the circumferential direction.

5. The anti-loosening structure of the oil cylinder cover in the oil cylinder according to claim 4, characterized in that: The sliding block (203) is located inside the limiting groove (103), and the outer wall of the insert ring (204) has insert holes (204a) evenly spaced along the circumferential direction, and the insert ring (204) is located inside the slot (101a).

6. The anti-loosening structure of the oil cylinder cover in the oil cylinder according to claim 1, characterized in that: Both ends of the rotating shaft (302) are rotatably connected to bearings on the inner wall of the through slot (101b), and the inserting plate (301) is L-shaped.

7. The anti-loosening structure of the oil cylinder cover in the oil cylinder according to claim 5, characterized in that: Ring plates (401) are fixedly connected to the top and bottom edges of the inner wall of the rotating ring (4), and extrusion plates (402) are fixedly connected to the inner wall of the rotating ring (4) at even intervals along the circumferential direction.

8. The anti-loosening structure of the oil cylinder cover in the oil cylinder according to claim 7, characterized in that: The ring plate (401) is located inside the adjacent ring groove (102); the cross section of the extrusion plate (402) is triangular; and the extrusion plate (402) is located inside the through groove (101b).

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