Vertical shaft wellhead safety door with function of being interlocked with lifting container

Abstract

The invention discloses a vertical shaft wellhead safety door with a lifting container interlocking function, and relates to the technical field of lifting containers and vertical shaft wellhead safety doors, the vertical shaft wellhead safety door comprises a base, the bottom surface of the base is provided with a vertical shaft, the top surface of the base is fixedly provided with a lifting machine, the top surface of the base is fixedly provided with a derrick, and the derrick is fixedly provided with a lifting device; a limiting shaft is rotatably connected to the top surface of the derrick, a steel wire rope is installed at the output end of the elevator, a lifting container is fixedly installed at one end of the steel wire rope, a supporting frame is fixedly installed in the base, an air cylinder is rotatably connected to the interior of the supporting frame, and a safety door is rotatably connected to the surface of the supporting frame. Electro-hydraulic control is adopted for the safety door, the control precision is high, opening and closing of the safety door are rapid and reliable, an anti-collision design is adopted, and the purpose is to prevent catastrophic consequences caused to personnel and mechanical equipment in a shaft due to the fact that the lifting container falls into the shaft when an over-winding accident happens to the lifting container in the derrick.

Description

Technical Field

[0001] The invention relates to the technical field of a lifting container and a shaft wellhead safety door, in particular to a shaft wellhead safety door with a function of interlocking with a lifting container. Background Art

[0002] The shaft safety door is installed at the surface of the shaft to prevent falling objects from the surface from falling into the shaft and to protect the workers and equipment facilities in the shaft and on the hoisting platform. At present, the shaft safety door generally adopts the traction method of wire rope wrapped on the electric winch to open and close the door. The power of the wire rope comes from the electric winch. Due to the low speed of the electric winch, the opening and closing of the safety door is slow. It is a fully manual control method, and it cannot be interlocked with the hoist, and the safety door cannot be opened and closed automatically. It is easy to cause the hoisting container to collide with the safety door, endangering the safety of the personnel and equipment facilities in the shaft.

[0003] There is no relevant literature report on this shaft safety door that can open and close automatically at present.

[0004] The disadvantages of the shaft safety door during the current mine shaft excavation period are as follows: 1. The electric winch uses friction to transmit power to the wire rope. In the process of opening and closing the safety door, the drum of the electric winch rubs against the wire rope. Long-term use will cause serious damage to the wire rope, and it is easy to break the rope, causing the abnormal closure of the shaft safety door, resulting in the collision of the lifting container that normally passes through the safety door with the safety door, inducing safety accidents; 2. Considering the entry and exit of personnel and equipment at the shaft, the wire rope is flexibly connected to the safety door through multiple guides, and the accuracy of controlling the opening and closing of the safety door is not high; 3. It cannot be interlocked with the hoist, and the safety door cannot be automatically opened and closed; 4. The opening and closing of the safety door by wire rope traction is slow, affecting the efficiency of shaft construction.

[0005] Therefore, we propose a shaft safety door with a function of interlocking with a lifting container to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a shaft opening safety door with a function of interlocking with a lifting container, so as to solve the problem that the shaft opening safety door with a function of interlocking with a lifting container proposed in the above background technology cannot be interlocked with the hoist and cannot realize automatic opening and closing of the safety door.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shaft mouth safety door with a linkage function with a lifting container, comprising: a base, a shaft shaft is arranged on the bottom surface of the base, a hoist is fixedly installed on the top surface of the base, a derrick is fixedly installed on the top surface of the base, the top surface of the derrick is rotatably connected to a limited axis, a steel wire rope is installed on the output end of the hoist, a lifting container is fixedly installed on one end of the steel wire rope, a support frame is fixedly installed inside the base, a cylinder is rotatably connected inside the support frame, a safety door is rotatably connected to the surface of the support frame, and a connecting block is fixedly installed on the bottom surface of the safety door.

[0008] Preferably, a hydraulic control unit is fixedly installed on the surface of the cylinder, a hoist control unit is fixedly installed on the surface of the hoist, and a door state detection sensor is fixedly installed inside the support frame; The hydraulic control unit is used to control the start and stop of the cylinder and send signals to the hoist control unit and receive signals sent by the hoist control unit; The elevator control unit is used to receive signals from the door state detection sensor and the hydraulic control unit and control the start and stop of the elevator; The door state detection sensor is used to detect the opening and closing state of the safety door.

[0009] Preferably, the connection block is rotationally connected to the output end of the cylinder, and the connection block is slidingly connected to the support frame.

[0010] Preferably, the number of the safety doors, cylinders and connecting blocks is two groups, and the two groups of safety doors, cylinders and connecting blocks are symmetrically distributed on both sides of the support frame.

[0011] Preferably, an electric push rod is fixedly installed inside the lifting container, a push block is installed on the output end of the electric push rod, the lifting container is slidably connected to a door frame inside, a door is rotatably connected inside the door frame, an observation window is slidably connected inside the door, a shift block is fixedly installed on the surface of the observation window, an insertion strip is inserted inside the shift block, a limiting groove is provided on the surface of the door, a sliding rod is slidably connected to the door inside, a spring is sleeved on the surface of the sliding rod, an insertion block is fixedly installed on one end of the sliding rod, and a connecting rod is fixedly installed on the surface of the insertion block.

[0012] Preferably, the push block is L-shaped, and the shift block is slidably connected to the door.

[0013] Preferably, the inserting strip is slidably connected to the shifting block and the observation window, and the inserting strip is threadedly connected to the leaf door.

[0014] Preferably, one end of the spring is connected to the top surface of the insert block, and the other end is connected to the inner surface of the door.

[0015] Preferably, the insert block is slidably connected to the door, and the insert block is slidably connected to the door frame.

[0016] Preferably, the connecting rod is L-shaped, the connecting rod is slidably connected to the door, and the connecting rod is slidably connected to the limiting groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. During use, the hoist control unit detects whether the lifting container is close to the safety door. When the lifting container is close to the set threshold, the hoist control unit will send a signal to the hydraulic control unit, and then the hydraulic control unit will control the opening of the cylinder. At this time, the cylinder will drive the connecting block to rotate. When the connecting block rotates, it will drive the safety door to rotate on the surface of the support frame, so that the safety door is opened. When the distance between the lifting container and the safety door is less than the set threshold, the hoist control unit sends a command to the hydraulic control unit to close the safety door, and then drives the cylinder through the hydraulic control unit to close the safety door, thereby realizing the interlocking between the hoist and the safety door and automatically controlling the opening and closing of the safety door; when the safety door opens and closes abnormally, the door status detection sensor can send the detected safety door status signal to the hoist control unit, commanding the hoist to stop running, so as to avoid collision accidents between the lifting container and the safety door; 2. When in use, the push block is driven upward by the electric push rod, and the push block will drive the door frame upward, and the door frame will drive the leaf door upward, thereby realizing the opening of the lifting container, avoiding the situation that the lifting container is difficult to push the leaf door open at the bottom of the narrow vertical shaft. When the observation window needs to be opened, just rotate the insert strip, and release the push block after the insert strip is turned out from the leaf door. At this time, the push block and the observation window will slide downward inside the leaf door under the action of gravity until the observation window opens. When the lifting container moves to the top of the safety door and needs to open the leaf door, just lift the connecting rod upward. At this time, the connecting rod will slide upward on the surface of the leaf door, and will also drive the insert block to slide upward inside the leaf door. After the insert block slides out from the inside of the door frame, the leaf door can be pushed open, thereby completing the opening of the leaf door. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a shaft opening safety door having a linkage function with a lifting container according to the present invention; Figure 2 It is a longitudinal cross-sectional view of a base in a shaft wellhead safety door having a function of interlocking with a lifting container according to the present invention, a shaft wellbore, a hoist and a lifting container; Figure 3 It is a schematic diagram of the explosion structure of the hydraulic control unit and the door state detection sensor in a shaft wellhead safety door having a function of interlocking with a lifting container after the safety door is deployed in the present invention; Figure 4The invention provides a shaft safety door having a linkage function with a lifting container. Figure 3 The enlarged view of point A in the middle; Figure 5 A system block diagram of the present invention having a function of interlocking with a lifting container; Figure 6 It is a schematic diagram of the explosion structure of a door frame at a lifting container in a shaft wellhead safety door having a function of interlocking with a lifting container according to the present invention; Figure 7 It is a schematic diagram of the explosion structure at the observation window and the connecting rod in a shaft safety door having a linkage function with a lifting container according to the present invention; Figure 8 The invention provides a shaft safety door having a linkage function with a lifting container. Figure 7 Enlarged view of point B in the middle.

[0019] In the figure: 100, base; 101, shaft; 102, hoist; 103, derrick; 104, limit shaft; 105, wire rope; 106, lifting container; 107, support frame; 108, cylinder; 109, connecting block; 110, safety door; 112, hydraulic control unit; 113, door status detection sensor; 114, hoist control unit; 200, electric push rod; 201, push block; 202, door frame; 203, leaf door; 204, observation window; 205, dial block; 206, insert strip; 207, limit slot; 208, slide rod; 209, spring; 210, insert block; 211, connecting rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Reference Figure 1-5As shown: a shaft safety door with a function of interlocking with a lifting container, comprising: a base 100, a shaft shaft 101 is arranged on the bottom surface of the base 100, a hoist 102 is fixedly installed on the top surface of the base 100, a derrick 103 is fixedly installed on the top surface of the base 100, a limited position shaft 104 is rotatably connected to the top surface of the derrick 103, a steel wire rope 105 is installed on the output end of the hoist 102, a lifting container 106 is fixedly installed on one end of the steel wire rope 105, a support frame 107 is fixedly installed inside the base 100, a cylinder 108 is rotatably connected inside the support frame 107, a safety door 110 is rotatably connected to the surface of the support frame 107, and a connecting block 109 is fixedly installed on the bottom surface of the safety door 110; A hydraulic control unit 112 is fixedly mounted on the surface of the cylinder 108, a hoist control unit 114 is fixedly mounted on the surface of the hoist 102, and a door state detection sensor 113 is fixedly mounted inside the support frame 107; The hydraulic control unit 112 is used to control the start and stop of the cylinder 108 and to send signals to the hoist control unit 114 and receive signals sent by the hoist control unit 114; The hoist control unit 114 is used to receive signals from the door state detection sensor 113 and the hydraulic control unit 112 and control the start and stop of the hoist 102; The door status detection sensor 113 is used to detect the opening and closing status of the safety door 110. The connecting block 109 is rotationally connected to the output end of the cylinder 108, and the connecting block 109 is slidingly connected to the support frame 107. The number of safety doors 110, cylinders 108 and connecting blocks 109 are two groups, and the two groups of safety doors 110, cylinders 108 and connecting blocks 109 are symmetrically distributed on both sides of the support frame 107.

[0022] In this embodiment, the hoist control unit 114 detects whether the lifting container 106 is close to the safety door 110. When the distance between the lifting container 106 is less than 15m, the hoist control unit 114 sends a signal to the hydraulic control unit 112, and then controls the opening of the cylinder 108 through the hydraulic control unit 112. At this time, the cylinder 108 drives the connecting block 109 to rotate. When the connecting block 109 rotates, it drives the safety door 110 to rotate on the surface of the support frame 107, so that the safety door 110 is opened. When the distance between the lifting container 106 and the safety door 110 is greater than 15m, the safety door 110 is opened. When the lifting container 106 is above the safety door 110, the lifting control unit 114 sends a signal to the hydraulic control unit 112, so that the cylinder 108 drives the safety door 110 to close, thereby realizing the interlocking between the lifting machine 102 and the safety door 110, and automatically controlling the opening and closing of the safety door 110; When the safety door 110 opens and closes abnormally, the door status detection sensor 113 can send the detected safety door 110 status signal to the hoist control unit 114, commanding the hoist 102 to stop running, so as to avoid a collision accident between the lifting container 106 and the safety door 110. The safety door 110 is electro-hydraulic controlled with high control accuracy. The safety door 110 opens and closes quickly and reliably, and adopts an anti-collision design to prevent the lifting container 106 from falling into the vertical shaft 101 when an overwinding accident occurs in the derrick 103, causing catastrophic consequences for personnel and mechanical equipment in the shaft.

[0023] Embodiment 2: Figure 6-8As shown, an electric push rod 200 is fixedly installed inside the lifting container 106, a push block 201 is installed at the output end of the electric push rod 200, a door frame 202 is slidably connected inside the lifting container 106, a door 203 is rotatably connected inside the door frame 202, an observation window 204 is slidably connected inside the door 203, a shift block 205 is fixedly installed on the surface of the observation window 204, an insertion strip 206 is inserted inside the shift block 205, a limiting groove 207 is provided on the surface of the door 203, a slide rod 208 is slidably connected inside the door 203, a spring 209 is sleeved on the surface of the slide rod 208, an insertion block 210 is fixedly installed at one end of the slide rod 208, and a spring 209 is provided on the surface of the slide rod 208. A connecting rod 211 is fixedly installed on the surface of the block 210, the push block 201 is L-shaped, the shift block 205 is slidingly connected to the door 203, the insertion strip 206 is slidingly connected to the shift block 205 and the observation window 204, the insertion strip 206 is threadedly connected to the door 203, one end of the spring 209 is connected to the top surface of the insertion block 210, and the other end is connected to the inner surface of the door 203, the insertion block 210 is slidingly connected to the door 203, the insertion block 210 is slidingly connected to the door frame 202, the connecting rod 211 is L-shaped, the connecting rod 211 is slidingly connected to the door 203, and the connecting rod 211 is slidingly connected to the limiting groove 207.

[0024] In this embodiment, the electric push rod 200 drives the push block 201 to move upward, and the push block 201 drives the door frame 202 to move upward, and the door frame 202 drives the door 203 to move upward, so as to realize the opening of the lifting container 106, avoiding the situation that the lifting container 106 is difficult to push the door 203 open at the bottom of the narrow vertical shaft 101. When it is necessary to open the observation window 204, it is only necessary to rotate the insertion strip 206, and the shifting block 205 can be released after the insertion strip 206 is rotated out of the door 203. At this time, the shifting block 205 05 and the observation window 204 will slide downward inside the leaf door 203 under the action of gravity until the observation window 204 is opened. When the lifting container 106 moves to the top of the safety door 110, when the leaf door 203 needs to be opened, it is only necessary to lift the connecting rod 211 upward. At this time, the connecting rod 211 will slide upward on the surface of the leaf door 203, and will also drive the insert block 210 to slide upward inside the leaf door 203. After the insert block 210 slides out from the inside of the door frame 202, the leaf door 203 can be pushed open, thereby completing the opening of the leaf door 203. When the door 203 needs to be closed, the door 203 only needs to be rotated, and the door 203 will drive the plug block 210 to move. After the plug block 210 moves to the top of the door frame 202, the connecting rod 211 can be loosened. At this time, the plug block 210 will move downward due to the elastic force of the spring 209. After the plug block 210 is inserted into the door frame 202, the door 203 can be closed.

[0025] The use method and working principle of the device: When the lifting container 106 needs to be lifted or lowered, the lifting machine control unit 114 detects whether the lifting container 106 is close to the safety door 110. When the distance between the lifting containers 106 is less than 15m, the lifting machine control unit 114 will send a signal to the hydraulic control unit 112, and then the hydraulic control unit 112 will control the opening of the cylinder 108. At this time, the cylinder 108 will drive the connecting block 109 to rotate. When the connecting block 109 rotates, it will drive the safety door 110 to rotate on the surface of the support frame 107, so that the safety door 110 is opened. When the lifting container 106 is lifted or lowered, the lifting machine control unit 114 will detect whether the lifting container 106 is close to the safety door 110. When the lifting container 106 is lifted or lowered, the lifting machine control unit 114 will send a signal to the hydraulic control unit 112, and then the hydraulic control unit 112 will control the opening of the cylinder 108. At this time, the cylinder 108 will drive the connecting block 109 to rotate. When the connecting block 109 rotates, it will drive the safety door 110 to rotate on the surface of the support frame 107, so that the safety door 110 is opened. When the distance to the safety door 110 is greater than 15m, the hoist control unit 114 sends a command to the hydraulic control unit 112 to close the safety door 110, and then drives the cylinder 108 through the hydraulic control unit 112 to close the safety door 110. When the hoist control unit 114 detects that the lifting container 106 is above the safety door 110, the hoist control unit 114 sends a signal to the hydraulic control unit 112, so that the hydraulic control unit 112 drives the cylinder 108 to drive the safety door 110 to close, thereby realizing the interlocking between the hoist 102 and the safety door 110, and automatically controlling the opening and closing of the safety door 110; When the safety door 110 opens or closes abnormally, the door state detection sensor 113 can send the detected safety door 110 state signal to the hoist control unit 114, and command the hoist 102 to stop running, so as to avoid the collision accident between the lifting container 106 and the safety door 110. The safety door 110 adopts electro-hydraulic control with high control accuracy. The safety door 110 opens and closes quickly and reliably, and adopts an anti-collision design, so as to prevent the lifting container 106 from falling into the shaft 101 when an overwinding accident occurs in the derrick 103, causing catastrophic consequences to the personnel and mechanical equipment in the shaft. When the lifting container 106 needs to be opened at the bottom of the shaft 101, the electric push rod 200 only needs to drive the push block 201 to move upward, and the push block 201 will drive the door frame 202 to move upward, and the door frame 202 will drive the door 203 to move upward, so as to realize the opening of the lifting container 106, avoiding the situation that the lifting container 106 is difficult to push the door 203 open at the bottom of the narrow shaft 101. When the observation window 204 needs to be opened, it is only necessary to rotate the insertion strip 206, and the insertion strip 206 can be released after it is rotated out of the door 203. The block 205 and the observation window 204 will slide downward inside the door 203 under the action of gravity until the observation window 204 is opened. When the door 203 needs to be opened after the lifting container 106 moves to the top of the safety door 110, the connecting rod 211 only needs to be lifted upward. At this time, the connecting rod 211 will slide upward on the surface of the door 203, and will also drive the insert block 210 to slide upward inside the door 203. After the insert block 210 slides out from the inside of the door frame 202, the door 203 can be pushed open, thereby completing the opening of the door 203. When the door 203 needs to be closed, the door 203 only needs to be rotated, and the door 203 will drive the plug block 210 to move. After the plug block 210 moves to the top of the door frame 202, the connecting rod 211 can be loosened. At this time, the plug block 210 will move downward due to the elastic force of the spring 209. After the plug block 210 is inserted into the door frame 202, the door 203 can be closed.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shaft safety door with interlocking function with a lifting container, characterized in that: include: A base (100), wherein a vertical shaft (101) is arranged on the bottom surface of the base (100), a hoist (102) is fixedly mounted on the top surface of the base (100), a derrick (103) is fixedly mounted on the top surface of the base (100), the top surface of the derrick (103) is rotatably connected to a limit axis (104), a steel wire rope (105) is mounted on the output end of the hoist (102), a lifting container (106) is fixedly mounted on one end of the steel wire rope (105), a support frame (107) is fixedly mounted inside the base (100), a cylinder (108) is rotatably connected inside the support frame (107), a safety door (110) is rotatably connected to the surface of the support frame (107), and a connecting block (109) is fixedly mounted on the bottom surface of the safety door (110).

2. The shaft safety door with interlocking function with the lifting container according to claim 1 is characterized in that: A hydraulic control unit (112) is fixedly mounted on the surface of the cylinder (108), a hoist control unit (114) is fixedly mounted on the surface of the hoist (102), and a door state detection sensor (113) is fixedly mounted inside the support frame (107); The hydraulic control unit (112) is used to control the start and stop of the cylinder (108) and to send signals to the hoist control unit (114) and receive signals sent by the hoist control unit (114); The elevator control unit (114) is used to receive signals sent by the door state detection sensor (113) and the hydraulic control unit (112) and to control the start and stop of the elevator (102); The door state detection sensor (113) is used to detect the opening and closing state of the safety door (110).

3. The shaft safety door with interlocking function with the lifting container according to claim 1 is characterized in that: The connection block (109) is rotationally connected to the output end of the cylinder (108), and the connection block (109) is slidingly connected to the support frame (107).

4. The shaft safety door with interlocking function with the lifting container according to claim 1 is characterized in that: The number of the safety door (110), the cylinder (108) and the connecting block (109) is two groups, and the two groups of safety doors (110), the cylinder (108) and the connecting block (109) are symmetrically distributed on both sides of the support frame (107).

5. The shaft safety door with interlocking function with the lifting container according to claim 1 is characterized in that: An electric push rod (200) is fixedly installed inside the lifting container (106), a push block (201) is installed at the output end of the electric push rod (200), a door frame (202) is slidably connected inside the lifting container (106), a leaf door (203) is rotatably connected inside the door frame (202), an observation window (204) is slidably connected inside the leaf door (203), a shift block (205) is fixedly installed on the surface of the observation window (204), an insertion strip (206) is inserted inside the shift block (205), a limiting groove (207) is provided on the surface of the leaf door (203), a sliding rod (208) is slidably connected inside the leaf door (203), a spring (209) is sleeved on the surface of the sliding rod (208), an insertion block (210) is fixedly installed on one end of the sliding rod (208), and a connecting rod (211) is fixedly installed on the surface of the insertion block (210).

6. The shaft safety door with interlocking function with the lifting container according to claim 5 is characterized in that: The push block (201) is L-shaped, and the shift block (205) is slidably connected to the door (203).

7. The shaft safety door with interlocking function with the lifting container according to claim 5 is characterized in that: The inserting strip (206) is slidably connected to the shifting block (205) and the observation window (204), and the inserting strip (206) is threadedly connected to the leaf door (203).

8. The shaft safety door with interlocking function with the lifting container according to claim 5 is characterized in that: One end of the spring (209) is connected to the top surface of the insert block (210), and the other end is connected to the inner surface of the door (203).

9. The shaft safety door with interlocking function with the lifting container according to claim 5, characterized in that: The insert block (210) is slidably connected to the door (203), and the insert block (210) is slidably connected to the door frame (202).

10. The shaft safety door with interlocking function with the lifting container according to claim 5, characterized in that: The connecting rod (211) is L-shaped, the connecting rod (211) is slidably connected to the door (203), and the connecting rod (211) is slidably connected to the limiting groove (207).

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