Safety protection device of hydraulic uncovered container

Abstract

The utility model relates to a safety protection device of a hydraulic uncovering container, and belongs to the technical field of hydraulic uncovering containers. The container comprises a container main body, a container cover, a hydraulic cylinder, a rotating shaft, an upper pin shaft and a lower pin shaft, wherein one end of the container cover is rotationally connected with the container main body through the rotating shaft; the container cover can be driven to rotate around the rotating shaft through the hydraulic cylinder, the container body is switched between the opening state and the closing state, a limiting clamping ring is fixedly arranged on the outer wall of the cylinder barrel assembly, a protective toothed belt is installed on the upper pin shaft, the upper end of the protective toothed belt is rotationally arranged around the upper pin shaft, and the lower end of the protective toothed belt penetrates through the limiting clamping ring. A spacing space is formed between the outer surface of the protective toothed belt and the inner wall of the limiting clamping ring; an inclined clamping groove is formed in the side face of the protective toothed belt, and when the container body is in the open state, the inclined clamping groove is clamped with the limiting clamping ring. In the uncovering state, the inclined clamping groove and the limiting clamping ring are always kept in the clamping state, and the structure is simple and reliable.

Description

Technical Field

[0001] This utility model relates to a safety protection device for a hydraulically opened container, belonging to the technical field of hydraulically opened containers. Background Technology

[0002] With the increasing size of equipment, many container opening designs now incorporate hydraulic opening mechanisms. However, hydraulic systems have numerous sealing elements and connection points. Damage to these elements or leaks at these points can cause the container lid to fall off. Furthermore, oil circuit ruptures or human error during operation can lead to production accidents or personal injury incidents.

[0003] To improve safety performance, equipment manufacturers are increasingly considering designing safety protection devices to minimize the occurrence of such accidents. For example, patent document CN211514378U discloses a safety protection device for a hydraulic tilting mixing tank, applied to the tank lid. It includes a safety device, a hydraulic opening system, and a linkage system that links the safety device and the hydraulic opening system. The safety device includes a pneumatic solenoid valve, a cylinder, and a safety rod; the safety rod is fixed to the drive end of the cylinder. The hydraulic opening system includes a hydraulic cylinder and a tilting frame, and the linkage system includes a rotating shaft and an encoder. When the encoder detects an abnormal rotational speed of the shaft, it sends a signal to the pneumatic solenoid valve, causing the solenoid valve to extend the cylinder. This safety protection device mainly consists of pneumatic solenoid valves, encoders, cylinders, and other components, requiring numerous electrical components, resulting in a relatively complex structure, higher cost, and a certain degree of susceptibility to electrical faults. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a safety protection device for a hydraulically opened container, which makes the structure simpler and more reliable.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a safety protection device for a hydraulically opened container, including a container body, a container lid, a hydraulic cylinder, a rotating shaft, an upper pin, and a lower pin. One end of the container lid is rotatably connected to the container body via the rotating shaft. The upper pin is fixedly mounted on the container lid, and the lower pin is fixedly mounted on the container body. The axes of both the upper and lower pins are parallel to the axis of the rotating shaft. The hydraulic cylinder includes a cylinder assembly and a piston rod. One end of the cylinder bottom of the cylinder assembly is rotatably mounted around the lower pin, and the end of the piston rod extending out of the cylinder assembly is rotatably mounted around the upper pin. The hydraulic cylinder can drive the container lid to rotate around the rotating shaft, and switch the container body between an open and closed state. The cylinder's axis is inclined relative to the vertical plane. A limit ring is fixedly installed on the outer wall of the cylinder assembly. A protective toothed belt is installed on the upper pin. The upper end of the protective toothed belt is rotatable around the upper pin, and the lower end of the protective toothed belt passes through the limit ring. There is a gap between the outer surface of the protective toothed belt and the inner wall of the limit ring. Taking the upper end of the hydraulic cylinder extending to the right at an inclination relative to the lower end of the hydraulic cylinder as a reference direction, an oblique groove is provided on the right side of the protective toothed belt, penetrating the front and rear ends of the protective toothed belt. The opening end of the oblique groove extends downward at an inclination relative to the bottom end of the groove. The oblique groove has a first state of engaging with the limit ring and a second state of disengaging from the limit ring. When the container body is in the open state, the oblique groove is in the first state.

[0006] To improve versatility and ensure the container lid has a safety protection device regardless of its opening degree, a preferred solution is to have multiple oblique grooves spaced apart along the length of the protective toothed strip. For ease of operation, a handle is fixedly installed at the lower end of the protective toothed strip.

[0007] To ensure a simple and reliable structure, the preferred solution is as follows: the cylinder assembly includes a cylinder, a cylinder bottom, and a cylinder head. The cylinder bottom and cylinder head are located at both ends of the cylinder. The cylinder head has a through hole through which the piston rod extends, and a retaining ring is fixedly mounted on the cylinder head.

[0008] To improve structural reliability, the preferred solution is that the angle formed by the oblique groove relative to the length direction of the protective toothed belt is 40° to 50°.

[0009] To improve structural reliability, the preferred solution is that the rotating connection between the cylinder assembly and the lower pin is equipped with a bearing, and the rotating connection between the piston rod and the upper pin is equipped with a bearing.

[0010] To facilitate on-site operation and improve structural reliability, the preferred solution is to equip the rotating connection between the protective toothed belt and the upper pin with a bearing.

[0011] The beneficial effects of this utility model are as follows: the inclination direction of the protective toothed belt is basically consistent with the inclination direction of the hydraulic cylinder axis. The protective toothed belt can be supported on the limiting ring under its own weight. During the opening operation, the piston rod of the hydraulic cylinder only needs to extend normally. After the container cover is opened to the correct position, the piston rod is then retracted to a certain length. The protective toothed belt slides along the limiting ring, allowing the oblique groove to gradually engage with the limiting ring until it is fully engaged. Because the oblique groove and the limiting ring remain engaged in the open state, the overall length of the hydraulic cylinder remains unchanged. This effectively avoids production accidents or personal injury accidents caused by the container cover falling due to damage or leakage of the hydraulic system's sealing elements or human error. During the closing operation, the piston rod only needs to be raised a certain length first, causing the oblique groove to gradually disengage from the limiting ring. Then, the hydraulic cylinder can be used to close the cover normally. When there are multiple oblique grooves, during the closing process, an operator is generally required to hold the protective toothed belt to ensure that the oblique grooves do not re-engage with the limiting ring. This utility model has a simple structure and avoids the use of electrical components, thus improving equipment safety. Attached Figure Description

[0012] Figure 1 This is a front view of the present invention when the container body is in the closed state.

[0013] Figure 2 This is a left view of the present invention when the container body is in the closed state.

[0014] Figure 3 This is a left view of the container body of this utility model when it is in the open state.

[0015] The components in the diagram are labeled as follows: Container body 1, Container cover 2, Rotary shaft 3, Cylinder assembly 4, Piston rod 5, Oil pipe 6, Protective toothed belt 7, Angled groove 71, Bearing 8, Limiting ring 9, Upper pin 10, Lower pin 11, Handle 12. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figures 1 to 3As shown, this utility model includes a container body 1, a container cover 2, a hydraulic cylinder, a rotating shaft 3, an upper pin 10, and a lower pin 11. One end of the container cover 2 is rotatably connected to the container body 1 via the rotating shaft 3. The upper pin 10 is fixedly mounted on the container cover 2, and the lower pin 11 is fixedly mounted on the container body 1. The axes of the upper pin 10 and the lower pin 11 are parallel to the axis of the rotating shaft 3. The hydraulic cylinder includes a cylinder assembly 4 and a piston rod 5. One end of the cylinder bottom of the cylinder assembly 4 is rotatably mounted around the lower pin 11 (i.e., the axis of rotation between the two is the axis of the lower pin 11). One end of the piston rod 5 extending out of the cylinder assembly 4 is rotatably mounted around the upper pin 10 (i.e., the axis of rotation between the two is the axis of rotation of the lower pin 11). The axis of rotation is the axis of the upper pin 10. The hydraulic cylinder drives the container cover 2 to rotate around the shaft 3, switching the container body 1 between open and closed states. The axis of the hydraulic cylinder is inclined relative to the vertical plane. A limit ring 9 is fixedly installed on the outer wall of the cylinder assembly 4. A protective toothed belt 7 is installed on the upper pin 10. The upper end of the protective toothed belt 7 rotates around the upper pin 10 (i.e., the axis of rotation between the two is the axis of the upper pin 10). The lower end of the protective toothed belt 7 passes through the limit ring 9, and there is a gap between the outer surface of the protective toothed belt 7 and the inner wall of the limit ring 9. The upper end of the hydraulic cylinder extends to the right at an inclination relative to the lower end of the hydraulic cylinder, which is set as the reference direction (i.e., the upper end of the hydraulic cylinder extends to the right at an inclination relative to the lower end of the hydraulic cylinder). Figure 2From the given perspective, the right side of the protective toothed belt 7 is provided with an oblique groove 71 that penetrates the front and rear ends of the protective toothed belt 7. The opening end of the oblique groove 71 extends downward at an angle relative to the bottom end of the groove (using the aforementioned usage state of the protective toothed belt 7 as the criterion, i.e., the state in which the upper end of the protective toothed belt 7 is connected to the upper pin 10 and the lower end passes through the limiting ring 9). The oblique groove 71 has a first state of engaging with the limiting ring 9 and a second state of disengaging from the limiting ring 9. When the container body 1 is in the open state, the oblique groove 71 is in the first state. It can be understood that when the lower end of the protective toothed belt 7 passes through the limiting ring 9, the size of the space between the outer surface of the protective toothed belt 7 and the inner cavity of the limiting ring 9 only needs to be reasonably determined by those skilled in the art to meet the working requirements of the above technical solution. Because the upper end of the protective toothed belt 7 is rotatably mounted around the upper pin 10, and there is a gap between the outer surface of the protective toothed belt 7 and the inner cavity of the limiting ring 9, the protective toothed belt 7 can move freely within the limiting ring 9 as long as the oblique groove 71 is in the second state of being disengaged from the limiting ring 9. This does not affect the normal rotation of the container cover 2 around the rotating shaft 3 driven by the hydraulic cylinder, so that the container body 1 can switch between the open and closed states. The power system of the hydraulic cylinder is conventional technology, typically including oil pipes 6 and a hydraulic pump, etc. The oil pipes 6 are preferably flexible high-pressure oil pipes. More specifically, the upper pin 10 can generally be directly mounted on one side of the container cover 2. In some alternative embodiments, the upper pin 10 can also be arranged through a linkage mechanism (see patent document CN211514378U for details).

[0018] In practice, during the opening operation, the piston rod 5 of the hydraulic cylinder simply extends normally. After the container lid 2 is fully opened, the piston rod 5 retracts a certain length, and the protective toothed band 7 slides along the limiting ring 9, gradually engaging the oblique groove 71 with the limiting ring 9 until fully engaged. Because the oblique groove 71 and the limiting ring 9 remain engaged during the open state, the overall length of the hydraulic cylinder remains constant. This effectively prevents production accidents or personal injury accidents caused by the container lid 2 falling due to damage or leakage of the hydraulic system's sealing elements or human error. During the closing operation, the piston rod 5 simply rises a certain length, gradually disengaging the oblique groove 71 from the limiting ring 9, and then the hydraulic cylinder can be used to close the lid normally. It is understood that the protective toothed band 7 is a mechanical limiting force-bearing component, and its specific material and thickness can be reasonably selected according to the weight of the container lid 2. The cylinder assembly 4 is a common kit in the field, generally including components such as cylinder barrel, cylinder bottom, and cylinder head. The cylinder bottom and cylinder head are respectively located at both ends of the cylinder barrel. The cylinder head has a through hole through which the piston rod 5 extends. The position of the limiting ring 9 can be reasonably selected according to the overall layout of the device and the movement stroke of the hydraulic cylinder. It can generally be designed on the upper part of the cylinder barrel or on the cylinder head. In this embodiment, it is preferred to design it on the cylinder head.

[0019] To improve versatility and ensure the container lid has a safety protection device regardless of its opening degree, a preferred design is to have multiple angled slots 71 spaced apart along the length of the protective toothed band 7. It's important to note that during the lid-closing process, an operator typically needs to hold the protective toothed band 7 to ensure the angled slots 71 do not re-engage with the limiting ring 9. For ease of operation, a handle 12 is fixedly provided at the lower end of the protective toothed band 7 for the operator to grip and operate.

[0020] To improve structural reliability, the angle formed by the oblique groove 71 relative to the length direction of the protective toothed belt 7 is 40° to 50°, and in this embodiment, it is more preferably 45°.

[0021] To improve structural reliability, bearings 8 are provided at the rotating connection between cylinder assembly 4 and lower pin 11, and at the rotating connection between piston rod 5 and upper pin 10. For ease of on-site operation and to further improve structural reliability, bearings 8 are also provided at the rotating connection between protective toothed belt 7 and upper pin 10. The specific installation method of bearings 8 is conventional prior art; it is sufficient to ensure that bearings 8 do not experience axial movement and are limited to their designed positions on the rotating shaft.

[0022] The specific parameters (material, strength, and mating dimensions) of this utility model are determined according to the actual practical situation. For example, the depth of the oblique groove 71 can be designed to be 2.2 to 2.3 times the cross-sectional diameter of the limiting ring 9, where the cross-sectional diameter of the limiting ring 9 is the diameter of the mating part between the limiting ring 9 and the oblique groove 71. The width of the oblique groove 71 can also be designed to be 2.2 to 2.3 times the cross-sectional diameter of the limiting ring 9. In the rotation direction of the protective toothed belt 7 ( Figure 2 (As shown in the left and right directions), the inner width of the limiting ring 9 can be 1.2 to 1.3 times the corresponding width of the protective toothed belt 7.

Claims

1. A safety protection device for a hydraulic decap container, comprising a container body (1), a container cover (2), a hydraulic cylinder, a rotating shaft (3), an upper pin shaft (10) and a lower pin shaft (11), one end of the container cover (2) is rotatably connected with the container body (1) through the rotating shaft (3); the upper pin shaft (10) is fixedly arranged on the container cover (2), and the lower pin shaft (11) is fixedly arranged on the container body (1); the axis of the upper pin shaft (10) and the axis of the lower pin shaft (11) are parallel to the axis of the rotating shaft (3); the hydraulic cylinder comprises a complete set of a cylinder barrel assembly (4) and a piston rod (5); one end of the cylinder barrel assembly (4) is rotatably arranged around the lower pin shaft (11), and one end of the piston rod (5) extending out of the cylinder barrel assembly (4) is rotatably arranged around the upper pin shaft (10); the container cover (2) can be driven to rotate around the rotating shaft (3) by the hydraulic cylinder, and the container body (1) can be switched between an open state and a closed state; the axis of the hydraulic cylinder is arranged obliquely relative to a vertical plane, characterized in that: The outer wall of the cylinder assembly (4) is fixedly provided with a limiting snap ring (9), the upper pin shaft (10) is provided with a protective tooth belt (7), the upper end of the protective tooth belt (7) is rotatably arranged around the upper pin shaft (10), the lower end of the protective tooth belt (7) passes through the limiting snap ring (9), and the outer surface of the protective tooth belt (7) and the inner wall of the limiting snap ring (9) have a spacing space; the reference direction is that the upper end of the hydraulic cylinder extends to the right relative to the lower end of the hydraulic cylinder; the right side surface of the protective tooth belt (7) is provided with a diagonal clamping groove (71) penetrating the front and rear end surfaces of the protective tooth belt (7), and the opening end of the diagonal clamping groove (71) extends downward relative to the groove bottom end; the diagonal clamping groove (71) has a first state of clamping the limiting snap ring (9) and a second state of being separated from the limiting snap ring (9), and when the container body (1) is in an open state, the diagonal clamping groove (71) corresponds to the first state.

2. The safety shield for a hydraulic decap vessel of claim 1, wherein: The diagonal clamping grooves (71) are arranged at intervals along the length direction of the protective tooth belt (7).

3. The safety shield for a hydraulic decap vessel of claim 2, wherein: The end position of the lower end of the protective tooth belt (7) is fixedly provided with a handle (12).

4. The safety shield for a hydraulic decap vessel of claim 1, wherein: The cylinder assembly (4) comprises a cylinder, a cylinder bottom and a cylinder cover, the cylinder bottom and the cylinder cover are arranged at two ends of the cylinder, the cylinder cover has a through hole through which the piston rod (5) extends, and the limiting snap ring (9) is fixedly arranged on the cylinder cover.

5. The safety shield for a hydraulic decap vessel of claim 1, wherein: The included angle of the diagonal clamping groove (71) relative to the length direction of the protective tooth belt (7) is 40° to 50°.

6. The safety protector for a hydraulic decap vessel of claim 1, wherein: The rotating connection part between the cylinder assembly (4) and the lower pin shaft (11) is provided with a bearing (8), and the rotating connection part between the piston rod (5) and the upper pin shaft (10) is provided with a bearing (8).

7. The hydraulic decap container safeguard of any one of claims 1 to 6, wherein: The rotating connection part between the protective tooth belt (7) and the upper pin shaft (10) is provided with a bearing (8). The rotating connection part between the protective tooth belt (7) and the upper pin shaft (10) is provided with a bearing (8).

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