An innovative and safe hydraulic cylinder device

Abstract

The utility model relates to the field of hydraulic cylinders, and in particular to an innovative safety hydraulic cylinder device, including a cylinder body, a piston, a piston rod, and a protection component. The utility model sets a protection component on the cylinder body, drives a stainless steel plate to move inwards through a locking block to apply pressure to the piston rod, so as to achieve auxiliary locking of the piston rod, and detects the pressure applied by the locking block to the piston rod through a pressure sensor, so as to prevent the piston rod from being damaged due to excessive extrusion, improve the flexibility of the protection component, and the locking block ensures that the piston rod remains stationary after reaching a preset position, reduces the situation where the piston rod slides down, improves the accuracy and stability of the equipment operation, reduces the safety hazards caused by the piston rod sliding down, and improves the practicality of the hydraulic cylinder.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic cylinders, and in particular to an innovative and safe hydraulic cylinder device. Background Art

[0002] The hydraulic cylinder is the actuator in the hydraulic system. It converts hydraulic energy into mechanical energy to achieve linear reciprocating motion or swinging motion. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines, such as construction machinery (excavators, cranes, etc.), metallurgical equipment, mining machinery, ships, aviation, aerospace equipment and other fields. It has the characteristics of compact structure, large output force, smooth operation and easy control.

[0003] Existing hydraulic cylinders lack protective components. When the hydraulic system of the hydraulic cylinder leaks unexpectedly or loses pressure, causing the piston rod to slide down, it is easy to affect the working accuracy and stability of the equipment. The sliding of the piston rod is also likely to pose a safety hazard, reducing the practicality of the hydraulic cylinder. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides an innovative and safe hydraulic cylinder device to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an innovative safety hydraulic cylinder device, comprising a cylinder body, a piston movably mounted in the cylinder body, a piston rod mounted on the piston and movably passing through the cylinder body, and a protection assembly arranged on the cylinder body, wherein the protection assembly comprises a protection cover fixedly mounted on the piston rod and movably connected to the side surface of the piston rod, an annular groove provided at the bottom of the inner side of the protection cover, an extrusion ring slidably mounted in the annular groove, and a hydraulic pipe connected to the annular groove for conveying hydraulic oil;

[0006] The inner top of the extrusion ring fits with the locking block, and a plurality of locking blocks are movably installed in the protective cover, and the outer wall of the locking block is an inclined surface matched with the extrusion ring, which is used to apply horizontal extrusion force to the piston rod, and a stainless steel plate is provided near one end of the piston rod of the locking block;

[0007] The stainless steel plate is connected to the input end of the pressure sensor, the pressure sensor is installed in the groove, and the groove is opened on the locking block.

[0008] Preferably, an electromagnetic reversing valve is installed on the hydraulic pipe to control the flow direction of the hydraulic oil in the hydraulic pipe.

[0009] Preferably, the upper end portion of the extrusion ring is an arc-shaped structure.

[0010] Preferably, a first fixing block is installed on the outer side of the extrusion ring, and the first fixing block is connected to the inner bottom of the protective cover through a first spring.

[0011] Preferably, a second fixing block is installed outside the locking block, and the second fixing block is movably connected to the inner side of the guide groove formed on the inner wall of the protective cover.

[0012] Preferably, the second fixing block is connected to the inner side of the guide groove via a second spring.

[0013] Preferably, the stainless steel plate is an arc-shaped structure parallel to the piston rod.

[0014] Beneficial effects of the utility model:

[0015] The utility model arranges a protection component on the cylinder body, and drives the stainless steel plate to move inwards through the locking block to apply pressure to the piston rod, so as to achieve auxiliary locking of the piston rod, thereby ensuring that the piston rod remains stationary after reaching a preset position, reducing the possibility of the piston rod sliding down, improving the accuracy and stability of the equipment operation, reducing the safety hazard caused by the sliding of the piston rod, and improving the practicality of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the front cross-sectional structure of the protection component of the utility model;

[0018] Figure 3 It is a schematic diagram of the top cross-sectional structure of the locking block of the utility model.

[0019] Among them: cylinder body-1, piston-2, piston rod-3, protection assembly-4, protection cover-41, annular groove-42, extrusion ring-43, hydraulic pipe-44, first fixed block-45, first spring-46, locking block-47, stainless steel plate-48, second fixed block-49, second spring-410, guide groove-411, solenoid reversing valve-412, pressure sensor-413, groove-414. DETAILED DESCRIPTION

[0020] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0021] like Figure 1 As shown, the utility model provides an innovative safety hydraulic cylinder device, comprising a cylinder body 1, a piston 2 slidably mounted in the cylinder body 1, the piston 2 being movable along the inner wall of the cylinder body 1, and a piston rod 3 mounted on the piston 2 and movably penetrating the cylinder body 1;

[0022] When in use, the end of the piston rod 3 is connected to an external device, and the liquid inlet and outlet ends of the cylinder body 1 are connected to the external hydraulic device, and the end of the hydraulic pipe 44 is synchronously connected to the external hydraulic device;

[0023] The hydraulic oil can be delivered into the cylinder 1 to drive the piston 2 to move along the inner wall of the cylinder 1, and the piston 2 drives the piston rod 3 to move synchronously, so that the piston rod 3 drives the externally connected equipment to move synchronously.

[0024] like Figure 2 and Figure 3 As shown, the present embodiment also includes a protection assembly 4 disposed on the cylinder body 1, the protection assembly 4 includes a protection cover 41 locked and fixed on the piston rod 3 and movably connected to the side surface of the piston rod 3, an annular groove 42 vertically opened at the bottom of the inner side of the protection cover 41, and an extrusion ring 43 slidably installed in the annular groove 42;

[0025] The extrusion ring 43 can move vertically up and down along the inner wall of the annular groove 42, thereby applying an extrusion force to the locking block 47 and the hydraulic pipe 44 connected to the annular groove 42 for conveying hydraulic oil;

[0026] The hydraulic pipe 44 is provided with an electromagnetic reversing valve 412 for controlling the flow direction of the hydraulic oil in the hydraulic pipe 44, innovatively controlling the position of the extrusion ring 43, and improving the overall compactness of the equipment;

[0027] The inner top of the extrusion ring 43 fits with the locking block 47. The locking block 47 is slidably installed with two in the protective cover 41. The locking block 47 can move horizontally in the protective cover 41 to apply extrusion force to the piston rod 3 to achieve auxiliary positioning of the piston rod 3. The outer wall of the locking block 47 is an inclined surface that matches the extrusion ring 43 and is used to apply horizontal extrusion force to the piston rod 3. The locking block 47 is movably installed with a stainless steel plate 48 near one end of the piston rod 3.

[0028] The stainless steel plate 48 is connected to the input end of the pressure sensor 413. The stainless steel plate 48 is an arc-shaped structure parallel to the piston rod 3, so that the stainless steel plate 48 can exert a stable extrusion force on the piston rod 3 and reduce the sliding of the piston rod 3.

[0029] The pressure sensor 413 is installed in the groove 414 to detect the pressure applied by the stainless steel plate 48 to the piston rod 3. The groove 414 is provided on the inner wall of the locking block 47.

[0030] In this embodiment, the upper end of the extrusion ring 43 is an arc-shaped structure, which facilitates the extrusion ring 43 to apply a stable pressure to the locking block 47;

[0031] In this embodiment, a first fixing block 45 is fixedly installed on the outer side of the extrusion ring 43, and the first fixing block 45 is connected to the inner bottom of the protection cover 41 through a first spring 46. When the hydraulic oil under the extrusion ring 43 flows outward, the extrusion ring 43 and the first fixing block 45 are quickly reset by the elastic force of the first spring 46;

[0032] In this embodiment, a second fixing block 49 is installed outside the locking block 47, and the second fixing block 49 is movably connected to the inner side of the guide groove 411 provided on the inner wall of the protective cover 41, so as to provide positioning for the locking block 47, thereby improving the stability of the hydraulic cylinder during use;

[0033] In this embodiment, the second fixing block 49 is connected to the inner side of the guide groove 411 through the second spring 410. When the pressure of the extrusion ring 43 disappears, the locking block 47 and the second fixing block 49 are quickly reset by the elastic force of the second spring 410.

[0034] During use, when the piston rod is extended to the specified position, the hydraulic oil is controlled to flow into the annular groove 42 through the hydraulic pipe 44, and the hydraulic oil squeezes the squeezing ring 43 in the annular groove 42 to move upward, and the squeezing ring 43 moves upward to drive the first fixed block 45 to move upward, and the first spring 46 is elastically stretched by the pulling force of the first fixed block 45, and the squeezing ring 43 moves upward to squeeze the locking block 47 to shrink inward, and the locking block 47 drives the stainless steel plate 48, the second fixed block 49 and the pressure sensor 413 to move inward, and the second fixed block 48 drives the second spring 410 to stretch elastically, and the stainless steel plate 48 moves inward to apply pressure to the piston rod 3, so as to achieve auxiliary fixation of the piston rod 3, improve the stability of the piston rod 3, and reduce the sliding of the piston rod 3, and the pressure sensor 413 detects the pressure applied by the stainless steel plate 48 to the piston rod 3, and when the pressure applied by the stainless steel plate 48 to the piston rod 3 reaches an appropriate value, the hydraulic oil is stopped from being delivered into the annular groove 42;

[0035] When the position of the piston rod 3 needs to be adjusted, the electromagnetic reversing valve 412 is controlled to discharge the hydraulic oil in the annular groove 42. At this time, the extrusion ring 43 and the locking block 47 are reset by the elastic force of the first spring 46 and the second spring 410 respectively, and the stainless steel plate 48 no longer applies extrusion force to the piston rod 3, so that the piston rod 3 can move quickly.

[0036] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An innovative and safe hydraulic cylinder device, comprising a cylinder body, a piston movably mounted in the cylinder body, and a piston rod mounted on the piston and movably passing through the cylinder body; Features: It also includes a protection assembly arranged on the cylinder body, the protection assembly includes a protection cover fixedly mounted on the piston rod and movably connected to the side surface of the piston rod, an annular groove opened at the bottom of the inner side of the protection cover, an extrusion ring slidably mounted in the annular groove, and a hydraulic pipe connected to the annular groove for conveying hydraulic oil; The inner top of the extrusion ring fits with the locking block, and a plurality of locking blocks are movably installed in the protective cover, and the outer wall of the locking block is an inclined surface matched with the extrusion ring, which is used to apply horizontal extrusion force to the piston rod, and a stainless steel plate is provided near one end of the piston rod of the locking block; The stainless steel plate is connected to the input end of the pressure sensor, the pressure sensor is installed in the groove, and the groove is opened on the locking block.

2. According to claim 1, an innovative safety hydraulic cylinder device is characterized in that: The hydraulic pipe is provided with an electromagnetic reversing valve for controlling the flow direction of the hydraulic oil in the hydraulic pipe.

3. According to claim 1, the innovative safety hydraulic cylinder device is characterized by: The upper end portion of the extrusion ring is an arc-shaped structure.

4. According to claim 3, an innovative safety hydraulic cylinder device is characterized in that: A first fixing block is installed on the outer side of the extrusion ring, and the first fixing block is connected to the inner bottom of the protective cover through a first spring.

5. According to claim 1, the innovative safety hydraulic cylinder device is characterized by: A second fixing block is installed outside the locking block, and the second fixing block is movably connected to the inner side of the guide groove provided on the inner wall of the protection cover.

6. According to claim 5, an innovative safety hydraulic cylinder device is characterized in that: The second fixing block is connected to the inner side of the guide groove through a second spring.

7. The innovative safety hydraulic cylinder device according to claim 1 is characterized in that: The stainless steel plate is an arc-shaped structure parallel to the piston rod.

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