Automatic manhole cover of self-adaptive pressure ejector pin safety device

Abstract

The utility model discloses an automatic manhole cover of a self-adaptive pressure ejector pin safety device, and particularly relates to the field of tank car manhole covers, which comprises a manhole seat ring mounted on a tank body and a cover plate rotationally moving at the top of the manhole seat ring, and a rotating arm component for driving the cover plate to move up and down is mounted on the outer wall of the manhole seat ring. A transmission system for driving the rotating arm assembly to work is connected to the end of the rotating arm assembly, an air cylinder component for driving the cover plate to rotate is connected to one side of the cover plate and the rotating arm assembly, and a self-adaptive pressure component is installed on the outer wall of the manhole seat ring. And the self-adaptive pressure part is communicated with the interior of the tank body, and limits the cover plate and the manhole seat ring according to the pressure in the tank body. A separation mechanism design is adopted between the transmission system part and the manhole cover overturning wall and between the transmission system part and the manhole cover overturning wall and the rotating shaft, the requirement for manually opening the cover in an emergency state is met, a self-adaptive pressure component is adopted, the risk of manually opening the cover by personnel under the condition that the tank is internally provided with pressure is reduced, and the safety of the personnel is protected to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the field of tank truck manhole covers, and more specifically, to an automatic manhole cover with an adaptive pressure ejector safety device. Background Art

[0002] At present, the manhole covers of tank trucks on the market, especially powder tank trucks, basically use traditional mechanical manhole covers, such as external three-claw manhole covers, translation manhole covers, etc. These manhole covers are bulky, complex in structure, and inconvenient to operate. Workers need to climb to the top of the tank and manually operate the manhole cover to open and close, which brings great safety hazards. Casualties caused by operating the opening and closing of the manhole cover also occur from time to time. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an automatic manhole cover with an adaptive pressure pin safety device, including a manhole seat ring installed on a tank body and a cover plate that rotates and moves on the top of the manhole seat ring. A rotating arm assembly that drives the cover plate to move up and down is installed on the outer wall of the manhole seat ring, and a transmission system that drives the rotating arm assembly to work is connected to the end of the rotating arm assembly. A cylinder component that drives the cover plate to rotate is connected to one side of the cover plate and the rotating arm assembly. An adaptive pressure component is installed on the outer wall of the manhole seat ring, and the adaptive pressure component is connected to the interior of the tank body and limits the cover plate and the manhole seat ring according to the internal pressure of the tank body.

[0004] In a preferred embodiment, the rotating arm assembly includes a bracket fixed on the outer wall of the manhole seat ring, a rotating shaft is inserted into the bracket, a flip arm is installed on the shaft and flips and rotates above the manhole seat ring, and the end of the flip arm extends above the cover plate.

[0005] In a preferred embodiment, a bearing is embedded in the end of the flip arm located above the cover plate, and a connecting rod fixed to the cover plate is inserted into the bearing. The cover plate rotates between the end of the flip arm and the top of the manhole seat ring through the connecting rod and the bearing.

[0006] In a preferred embodiment, the transmission system includes a driving component mounted on the tank body and a first prismatic shaft connected to the end of the rotating shaft, a coupling is connected to the output end of the driving component, the other end of the coupling is connected to the transmission shaft, and a support frame is provided on the outside of the transmission shaft to support the transmission shaft, and the support frame is fixed to the outer wall of the tube body.

[0007] In a preferred embodiment, a second prismatic shaft is installed at the end of the transmission shaft away from the coupling, the second prismatic shaft and the first prismatic shaft are located on the same straight line, and a separation sleeve is provided on the outer sleeve of the first prismatic shaft and the second prismatic shaft close to one end for transmission connection between the two.

[0008] In a preferred embodiment, the cylinder component includes a driving cylinder movably mounted on the side wall of the flip arm, and a rotating coupling is mounted on the end of the output shaft of the driving cylinder, and the coupling is fixed at the edge of the cover plate.

[0009] In a preferred embodiment, the adaptive pressure component includes a pressure cylinder fixed on the outer wall of the manhole seat ring, the input end of the pressure cylinder is connected to an air pipe, the air pipe is connected to the interior of the tank body, and a pressure ejector pin that can be lifted and lowered is installed at the output end of the pressure cylinder, and a ejector pin cover that cooperates with the pressure ejector pin is installed at the edge of the cover plate located above the pressure ejector pin.

[0010] In a preferred embodiment, an obliquely arranged closing claw is installed on the outer wall of the manhole seat ring, and a closing plate is installed at the bottom of the cover plate and is clamped on one side of the closing claw.

[0011] Technical effects and advantages of this utility model:

[0012] The utility model adopts a separation mechanism design between the transmission system part and the manhole cover flip wall and the rotating shaft, which meets the need for manual opening of the cover in an emergency state. The use of adaptive pressure components reduces the risk of manual opening of the cover by personnel when the tank is pressurized, thereby protecting the safety of personnel to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model after the cover is rotated and before it is opened;

[0015] Figure 3 This is a schematic diagram of the structure of the utility model when the cover is opened;

[0016] Figure 4 This is a structural schematic diagram of the separation sleeve and the first prismatic shaft of the utility model when separated.

[0017] Explanation of the accompanying reference numerals: 1 manhole seat ring, 2 cover plate, 3 tank body, 4 rotating arm assembly, 5 transmission system, 6 cylinder assembly, 7 adaptive pressure component, 8 bracket, 9 rotating shaft, 10 flip arm, 11 bearing, 12 connecting rod, 13 driving component, 14 first prism shaft, 15 coupling, 16 transmission shaft, 17 support frame, 18 second prism shaft, 19 separation sleeve, 20 driving cylinder, 21 connecting shaft, 22 pressure cylinder, 23 air pipe, 24 pressure ejector pin, 25 ejector pin cover, 26 closing claw, 27 closing plate. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

[0019] like Figure 1-4 The automated manhole cover with an adaptive pressure ejector pin 24 safety device shown in the figure includes a manhole ring 1 mounted on a tank body 3 and a cover plate 2 that rotates and moves on top of the manhole ring 1. A rotating arm assembly 4 that drives the cover plate 2 to move up and down is mounted on the outer wall of the manhole ring 1. A transmission system 5 that drives the rotating arm assembly 4 is connected to the end of the rotating arm assembly 4. A cylinder component 6 that drives the cover plate 2 to rotate is connected to one side of the cover plate 2 and the rotating arm assembly 4. An adaptive pressure component 7 is mounted on the outer wall of the manhole ring 1. The adaptive pressure component 7 is in communication with the interior of the tank body 3 and limits the position of the cover plate 2 and the manhole ring 1 according to the internal pressure of the tank body 3.

[0020] Based on the above, the cover plate 2 can be rotated or moved up and down on the manhole seat ring 1 through the rotating arm assembly 4 to realize the opening and closing of the cover plate 2 on the manhole seat ring 1. The adaptive pressure component 7 limits the cover plate 2 according to the pressure inside the tank body 3. When the pressure inside the tank body 3 is too high, the cover plate 2 and the manhole seat ring 1 are locked, and the cover plate 2 cannot be opened. After the pressure inside the tank body 3 is released to a safe range, the limit between the cover plate 2 and the manhole seat ring 1 is released to realize the opening of the cover plate 2.

[0021] like Figure 1-2 As shown, the rotating arm assembly 4 includes a bracket 8 fixed on the outer wall of the manhole seat ring 1, a rotating shaft 9 is inserted into the bracket 8, and a flip arm 10 is installed on the rotating shaft 9 to flip and rotate above the manhole seat ring 1, and the end of the flip arm 10 extends above the cover plate 2;

[0022] Based on the above, the manhole seat ring 1 is fixed on the tank body 3, and the flip arm 10 is flipped and rotated on the bracket 8 through the rotating shaft 9, and the bracket 8 is fixed on the outer wall of the manhole seat ring 1. Therefore, when the flip arm 10 rotates, it can drive the cover plate 2 to flip above the manhole seat ring 1, thereby realizing the opening and closing of the cover plate 2 on the manhole seat ring 1.

[0023] like Figure 1-2 A bearing 11 is embedded at the end of the flip arm 10 located above the cover plate 2, and a connecting rod 12 fixed to the cover plate 2 is inserted into the bearing 11. The cover plate 2 rotates at the end of the flip arm 10 and the top of the manhole seat ring 1 through the connecting rod 12 and the bearing 11;

[0024] Furthermore, the cover plate 2 can be rotated below the end of the flip arm 10 through the bearing 11 and the connecting rod 12, so that the cover plate 2 rotates on the manhole seat ring 1. When the cover plate 2 is closed on the manhole seat ring 1, the rotation of the cover plate 2 can cooperate with the sealing component provided in the manhole seat ring 1 to achieve sealing between the cover plate 2 and the manhole seat ring 1.

[0025] like Figure 1-2 and Figure 4 As shown, the transmission system 5 includes a driving component 13 mounted on the tank body 3 and a first prismatic shaft 14 connected to the end of the rotating shaft 9. A coupling 15 is connected to the output end of the driving component 13, and the other end of the coupling 15 is connected to a transmission shaft 16. A support frame 17 is sleeved on the outside of the transmission shaft 16 to support the transmission shaft 16. The support frame 17 is fixed to the outer wall of the tube body;

[0026] Furthermore, the driving component 13 includes a motor and a reducer, which are installed in sequence in a transmission connection, and the coupling 15 is connected to the output shaft end of the reducer. By starting the motor to drive the reducer output, the coupling 15 is driven to rotate, driving the transmission shaft 16 at the other end to rotate on the support frame 17.

[0027] like Figure 3-4 As shown, a second prismatic shaft 18 is mounted on the end of the transmission shaft 16 away from the coupling 15. The second prismatic shaft 18 and the first prismatic shaft 14 are located on the same straight line. A separation sleeve 19 is provided on the outer portion of the first prismatic shaft 14 and the second prismatic shaft 18 near one end thereof for transmission connection between the two.

[0028] Based on the above, the second prismatic shaft 18 at the other end of the transmission shaft 16 is connected to the rotating shaft 9 on the manhole seat ring 1 through the separation sleeve 19. When the transmission shaft 16 rotates, the rotating shaft 9 is driven to rotate on the bracket 8 through the second prismatic shaft 18, the separation sleeve 19 and the first prismatic shaft 14, thereby realizing the flipping and lifting of the flip arm 10 on the manhole seat ring 1, and flipping and moving the cover plate 2.

[0029] Furthermore, a fastening bolt for limiting is inserted into the outer wall of the separation sleeve 19. When the separation sleeve 19 is inserted between the first prismatic shaft 14 and the second prismatic shaft 18 to connect the two, the fastening bolt passes through the separation sleeve 19 and abuts against the outer wall of the inner prismatic shaft to fix the separation sleeve 19, thereby ensuring stable transmission between the first prismatic shaft 14 and the second prismatic shaft 18.

[0030] When the separation sleeve 19 moves to the outside of the second prismatic shaft 18, the transmission relationship between the first prismatic shaft 14 and the second prismatic shaft 18 is released. At this time, the inner end of the fastening bolt is against the outside of the second prismatic shaft 18 to fix the separation sleeve 19 on the outside of the second prismatic shaft 18.

[0031] like Figure 1-2 As shown, the cylinder component 6 includes a driving cylinder 20 movably mounted on the side wall of the flip arm 10, and a rotating connecting shaft 21 is installed at the end of the output shaft of the driving cylinder 20, and the connecting shaft 21 is fixed at the edge of the cover plate 2;

[0032] Furthermore, when the cover plate 2 opens or closes the seal on the manhole seat ring 1, the cover plate 2 needs to rotate, the bearing 11 and the connecting shaft 21 provide structural support, and the driving cylinder 20 provides power support for the rotation of the cover plate 2. The end of the output shaft of the driving cylinder 20 is sleeved with the rotatable connecting shaft 21. During the extension and retraction of the driving cylinder 20, the connecting shaft 21 pushes the cover plate 2 to rotate at the end of the flip arm 10, thereby realizing the sealing and opening of the cover plate 2 on the manhole seat ring 1.

[0033] like Figure 2-4 As shown, the adaptive pressure component 7 includes a pressure cylinder 22 fixed on the outer wall of the manhole seat ring 1, the input end of the pressure cylinder 22 is connected to the air pipe 23, the air pipe 23 is connected to the interior of the tank body 3, and a lifting and lowering pressure ejector pin 24 is installed at the output end of the pressure cylinder 22. A ejector pin cover 25 that cooperates with the pressure ejector pin 24 is installed at the edge of the cover plate 2 located above the pressure ejector pin 24.

[0034] Based on the above, the adaptive pressure component 7 provides a locking effect between the cover plate 2 and the manhole seat ring 1. The pressure of the pressure cylinder 22 is balanced with the internal pressure of the tank body 3. The two are connected by the air pipe 23. When the internal pressure of the tank body 3 is too high, the pressure of the pressure cylinder 22 also increases, causing the pressure ejector pin 24 at the output end of the pressure cylinder 22 to rise and act on the ejector pin cover 25 at the edge of the cover plate 2, so that the cover plate 2 cannot be opened on the manhole seat ring 1.

[0035] When the internal pressure of the tank body 3 decreases, the pressure of the pressure cylinder 22 is reduced, and the pressure ejector pin 24 at the output end of the pressure cylinder 22 falls back and separates from the ejector pin cover 25, so that the cover plate 2 can be opened on the manhole seat ring 1.

[0036] The outer wall of the manhole seat ring 1 is provided with an inclined closing claw 26, and the bottom of the cover plate 2 is provided with a closing plate 27 which is clamped to one side of the closing claw 26;

[0037] Based on the above, the closing plate 27 is stuck on the closing claw 26, and the two provide a locking limit function, so that the cover plate 2 cannot be opened. The opening and locking between the two are completed by the cylinder component 6 driving the cover plate 2 to rotate on the manhole seat ring 1. Figure 2 As shown, when the cover 2 rotates counterclockwise, it drives the closing plate 27 to move away from the closing claw 26, separating the two and releasing the limit. When the cover 2 rotates clockwise, it drives the closing plate 27 to move toward the side of the closing claw 26 until the two are locked and limited.

[0038] Furthermore, the automated manhole cover is equipped with a manhole cover control system to control the above components. The opening process of the manhole cover is as follows: the manhole cover control system determines that the pressure in the tank body 3 has reached the requirement for opening the cover. At this time, the pressure ejector pin 24 of the adaptive pressure component 7 is in a retracted state and detaches from the ejector pin cover 25, issuing an opening instruction. The cylinder component 6 drives the cover plate 2 to rotate, the closing plate 27 and the closing claw 26 are separated, and the driving component 13 works to drive the cover plate 2 to flip on the manhole seat ring 1, and the manhole cover is opened.

[0039] The closing process of the manhole cover is as follows: the manhole cover control system issues a closing command, the driving component 13 rotates, drives the flip arm 10 and the cover plate 2 to flip, and releases the cover plate 2 from the manhole seat ring 1, the cylinder component 6 drives the cover plate 2 to rotate, the closing plate 27 and the closing claw 26 engage and close, the cover plate 2 is closed to the manhole seat ring 1, and the manhole cover is closed;

[0040] When the control system fails, the manhole cover needs to be opened manually. At this time, the separation sleeve 19 is peeled back to the side of the second prism shaft 18, so that the flip arm 10 and the cover plate 2 can flip and move, and separate from the transmission shaft 16 of the drive component 13 and the second prism shaft 18. The pressure cylinder 22 is manually depressurized to reduce the air pressure inside the tank body 3. At this time, the cover plate 2 can be manually rotated and the manhole cover is manually flipped open.

[0041] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making any creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in this utility model shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. An automatic manhole cover with an adaptive pressure ejector safety device, comprising a manhole seat ring mounted on a tank body and a cover plate that rotates and moves on the top of the manhole seat ring, characterized in that: A rotating arm assembly that drives the cover plate to move up and down is installed on the outer wall of the manhole seat ring. A transmission system that drives the rotating arm assembly to work is connected to the end of the rotating arm assembly. A cylinder component that drives the cover plate to rotate is connected to one side of the cover plate and the rotating arm assembly. An adaptive pressure component is installed on the outer wall of the manhole seat ring. The adaptive pressure component is connected to the inside of the tank body and limits the cover plate and the manhole seat ring according to the internal pressure of the tank body.

2. The automatic manhole cover with an adaptive pressure ejector safety device according to claim 1, characterized in that: The rotating arm assembly includes a bracket fixed on the outer wall of the manhole seat ring, a rotating shaft is inserted on the bracket, and a flip arm is installed on the shaft to flip and rotate above the manhole seat ring, and the end of the flip arm extends above the cover plate.

3. The automatic manhole cover with an adaptive pressure ejector safety device according to claim 2, characterized in that: A bearing is embedded in the end of the flip arm above the cover plate, and a connecting rod fixed on the cover plate is inserted into the bearing. The cover plate rotates on the end of the flip arm and the top of the manhole seat ring through the connecting rod and the bearing.

4. The automatic manhole cover with an adaptive pressure ejector safety device according to claim 2, characterized in that: The transmission system includes a driving component installed on the tank body and a first prismatic shaft connected to the end of the rotating shaft. A coupling is connected to the output end of the driving component, and the other end of the coupling is connected to the transmission shaft. A support frame is sleeved on the outside of the transmission shaft to support the transmission shaft, and the support frame is fixed to the outer wall of the tube body.

5. The automatic manhole cover with an adaptive pressure ejector safety device according to claim 4, characterized in that: A second prismatic shaft is installed at one end of the transmission shaft away from the coupling. The second prismatic shaft and the first prismatic shaft are located on the same straight line. A separation sleeve is provided on the outer sleeve of the first prismatic shaft and the second prismatic shaft close to one end for transmission connection between the two.

6. The automatic manhole cover with an adaptive pressure ejector safety device according to claim 2, characterized in that: The cylinder component comprises a driving cylinder movably mounted on the side wall of the flip arm, a rotating coupling is mounted on the end of the output shaft of the driving cylinder, and the coupling is fixed at the edge of the cover plate.

7. The automatic manhole cover with an adaptive pressure ejector safety device according to claim 2, characterized in that: The adaptive pressure component includes a pressure cylinder fixed on the outer wall of the manhole seat ring, the input end of the pressure cylinder is connected to the air pipe, the air pipe is connected to the interior of the tank body, and a pressure ejector pin that can be lifted and lowered is installed at the output end of the pressure cylinder. A ejector pin cover that cooperates with the pressure ejector pin is installed at the edge of the cover plate above the pressure ejector pin.

8. The automatic manhole cover with an adaptive pressure ejector safety device according to claim 2, characterized in that: An obliquely arranged closing claw is installed on the outer wall of the manhole seat ring, and a closing plate clamped on one side of the closing claw is installed at the bottom of the cover plate.

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