Coal yard automobile access door with double limiting protection

Abstract

The utility model provides a coal yard automobile access door with double limiting protection, and relates to the technical field of coal yard access doors, door bottom connecting pieces are fixedly connected to the bottoms of lifting doors, positioning pieces are installed on the sides, facing a connecting channel, of the door bottom connecting pieces of the two sets of lifting doors, a movable assembly comprises a crossing rod, and the crossing rod is connected with the two sets of positioning pieces in a sliding mode. Through the arrangement of the positioning pieces, the lifting pieces and the crossing rod, under the state that one end of the crossing rod limits one positioning piece, the other end of the crossing rod does not limit the other positioning piece and limits one set of lifting doors, and then the other set of lifting doors can be opened. Once a failure phenomenon occurs in the falling process of a group of lifting doors to be descended, as long as the lifting door on the side is not closed, the lifting piece below the lifting door on the side is located at the highest position, and the movement of the crossing rod is limited, so that the lifting doors to be ascended cannot be opened under the limiting state of the crossing rod.

Description

Technical Field

[0001] This utility model relates to the field of coal yard access gate technology, specifically a coal yard vehicle access gate with dual limit protection. Background Technology

[0002] A coal yard vehicle access gate is a gate or passage specifically set up within the coal yard area for vehicles to enter and exit the coal yard. It is designed to control and manage the entry and exit of vehicles within the coal yard. As a place for coal storage and transportation, the access gate can serve as a sealing device to ensure that the coal yard air membrane is in normal working condition.

[0003] Most existing coal yard truck access doors are designed with separate limiters for each of the two sets of doors. If one set of doors fails to close during the closing process due to malfunction, jamming, or damage, while the other set remains open, a situation will arise where both the inner and outer access doors are not closed simultaneously, leading to an air-supported membrane collapse accident. Utility Model Content

[0004] The purpose of this utility model is to provide a coal yard truck access door with dual limit protection to solve the problem mentioned in the background art. Most of the existing coal yard truck access doors limit the two sets of doors separately. If one set of doors fails to close during the falling process due to malfunction, jamming or damage, while the other set of doors remains open, the inner and outer access doors will not close at the same time, which will lead to the collapse of the air membrane.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal yard vehicle access door with dual limit protection, comprising a vehicle access door, the vehicle access door including a door frame, a lifting door and a connecting channel, the lifting door being disposed within the door frame, two sets of lifting doors and door frames being provided, the door frames being connected by the connecting channel, and also including a bottom connector and a movable component, the bottom connector being fixedly connected to the bottom of the lifting door, both sets of bottom connectors of the lifting doors having positioning components installed on the side facing the connecting channel, the movable component including a crossbar, the crossbar slidably connecting the two sets of positioning components, with one positioning component limited at one end of the crossbar, the other end of the crossbar releasing the limitation on the other positioning component.

[0006] Preferably, the positioning element is provided on both sides of each set of door bottom connectors, and the movable component is provided in two sets correspondingly distributed between the positioning elements on the same side of the two sets of door frames.

[0007] Preferably, each set of positioning components has a corresponding limiting component at its bottom. The limiting component includes a first fixed seat, a lifting component, and a spring. The lifting component is slidably connected to the first fixed seat, and the lifting component and the first fixed seat are connected by a spring.

[0008] Preferably, the upper surface of the first fixed seat is provided with a groove, and the lifting member passes through the inside of the groove of the first fixed seat, and the shape of the lifting member matches the inside of the groove.

[0009] Preferably, the crossbar has end caps at both ends, and the positioning member has a notch on the side facing the crossbar, and the crossbar is inserted into the notch.

[0010] Preferably, the notch is a trapezoidal shape with the inner side being the upper base, and the end is matched with the size of the notch.

[0011] Preferably, the movable component further includes a hydraulic actuator and a second fixed base, the body of the hydraulic actuator being fixedly connected to the second fixed base, and the output end of the hydraulic actuator being fixedly connected to the crossbar.

[0012] Preferably, a sealing gasket is installed at the bottom of the door bottom connector, and the sealing gasket is made of a flexible material.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention, through the arrangement of positioning components, lifting components, and a crossbar, limits the movement of one set of lifting doors by restricting one positioning component at one end of the crossbar, while simultaneously releasing the restriction on the other positioning component at the other end. Only then can the other set of lifting doors be opened. If a set of lifting doors malfunctions, gets stuck, or is damaged during its descent, causing a failure to close, the lifting component below that door will remain at its highest position, limiting the movement of the crossbar. Therefore, the lifting door to be raised cannot be opened while the crossbar is in a restricted state. By adding a limiting device to the coal yard truck access doors, the reliability of the interlocking system is improved, preventing the collapse of the air-supported membrane structure due to simultaneous opening of inner and outer access doors, thus ensuring the safe and stable operation of the coal yard air-supported membrane structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the coal yard vehicle access door with dual limit protection according to this utility model.

[0016] Figure 2 This is a schematic diagram showing the distribution of the door bottom connector, limiting component, and movable component of this utility model.

[0017] Figure 3 This is a schematic diagram of the door bottom connector structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the limiting component structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the active component structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the crossbar distribution of this utility model.

[0021] Figure 7 This is a schematic diagram showing the distribution of the end-end abutment lifting components of this utility model.

[0022] Figure 8 This is a schematic diagram showing the distribution of the unconnected positioning components at the end of this utility model.

[0023] Figure 9 This is a schematic diagram showing the distribution of the end plug-in positioning components of this utility model.

[0024] In the diagram: 1. Car access door; 11. Door frame; 12. Lifting door; 13. Connecting passage; 2. Door bottom connector; 21. Positioning component; 211. Notch; 22. Sealing gasket; 3. Limiting component; 31. First fixed seat; 311. Groove; 312. Ground fixed seat; 32. Lifting component; 33. Spring; 4. Movable component; 41. Crossbar; 411. End; 42. Hydraulic unit; 43. Second fixed seat. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] One embodiment provided by this utility model: as follows Figure 1 and Figure 2 As shown, a coal yard vehicle access door with dual limit protection includes a vehicle access door 1, a door bottom connector 2, a limit component 3, and a moving component 4.

[0027] like Figure 1 As shown, the vehicle access gate 1 includes a gate frame 11, a lifting gate 12, and a connecting passage 13. The lifting gate 12 is installed inside the gate frame 11, and two sets of lifting gates 12 and gate frames 11 are provided. The gate frames 11 are connected by the connecting passage 13. When vehicles enter or exit the coal yard, in order to ensure the air film pressure of the coal yard, they should pass through the two sets of lifting gates 12 one after the other.

[0028] like Figure 3 and Figure 4As shown, the bottom connector 2 is fixedly connected to the bottom of the lifting door 12. Both sets of bottom connectors 2 of the lifting door 12 have positioning components 21 installed on the side facing the connecting channel 13. Each positioning component 21 has a corresponding limiting component 3 at its bottom. The limiting component 3 includes a first fixed seat 31, a lifting component 32, and a spring 33. A ground fixed seat 312 is provided near the periphery of the first fixed seat 31, with its bottom buried below the ground surface. The ground fixed seat 312 is fixed to the ground surface. The lifting component 32 is slidably connected to the first fixed seat 31. A groove 311 is provided on the upper surface of the first fixed seat 31, and the lifting component 32 passes through the inside of the groove 311. The shape of the lifting component 32 matches the inside of the groove 311. The lifting component 32 and the first fixed seat 31 are connected by a spring 33. The bottom outer diameter of the positioning component 21 is larger than the top outer diameter of the lifting component 32.

[0029] like Figure 5 As shown, the active component 4 includes a crossbar 41, a hydraulic actuator 42, and a second fixed seat 43. The crossbar 41 is slidably connected to two sets of positioning members 21. The second fixed seat 43 is fixedly installed on the ground surface. The body of the hydraulic actuator 42 is fixedly connected to the second fixed seat 43. The output end of the hydraulic actuator 42 is fixedly connected to the crossbar 41. The driving direction of the hydraulic actuator 42 is parallel to the line direction connecting the positioning members 21 corresponding to the two sets of door bottom connectors 2.

[0030] like Figure 6 As shown, the crossbar 41 has end caps 411 at both ends, and the positioning member 21 has a notch 211 on the side facing the crossbar 41, through which the crossbar 41 is inserted. With one positioning member 21 positioned at one end of the crossbar 41, the other end of the crossbar 41 releases the restriction on the other positioning member 21. The surface of the positioning member 21 with the notch 211 is on the same plane as the surface of the lifting member 32 facing the crossbar 41.

[0031] Working principle: When a vehicle enters or exits the coal yard, it first passes through the first lifting gate 12. The crossbar 41 then releases the restriction on the positioning component 21 of the lifting gate 12 and restricts the positioning component 21 of the second lifting gate 12. The first lifting gate 12 can then be opened, and the vehicle enters the connecting passage 13. When the first lifting gate 12 closes, the crossbar 41 releases the restriction on the positioning component 21 of the second lifting gate 12 and restricts the positioning component 21 of the first lifting gate 12. The second lifting gate 12 can then be opened, and the vehicle exits the connecting passage 13.

[0032] like Figure 7 , Figure 8 and Figure 9As shown, whenever one set of lifting doors 12 needs to be opened, another set of lifting doors 12 must be closed first. During the descent of the bottom connecting piece 2 of the closed set of lifting doors 12, the positioning piece 21 of the lifting door 12 also descends and applies downward pressure to the lifting piece 32 directly below. The spring 33 is compressed. After the lifting door 12 has completely landed, the height of the notch 211 of its positioning piece 21 is consistent with the height of the crossbar 41. At this time, the hydraulic device 42 drives the crossbar 41 to move. One end 411 of the crossbar 41 is inserted into the notch 211 of the positioning piece 21 of the lowered set of lifting doors 12, and the other end 411 of the crossbar 41 leaves the notch 211 of the positioning piece 21 of the lifting door 12 to be raised. This ensures that the positioning piece 21 of the set of lifting doors 12 to be raised is not restricted and can proceed to the next step of raising. When the lifting door 12 to be raised is opened, the lifting piece 32 below this position moves upward under the action of the spring 33. If a set of lowering lifting doors 12 malfunctions, gets stuck, or is damaged during its descent, causing a failure to close the lifting door 12, the lifting component 32 below that door 12 will remain at its highest position as long as it remains open, limiting the movement of the crossbar 41. Therefore, the lifting door 12 cannot be opened while the crossbar 41 is in a limited position. By adding this limiting device to the coal yard truck access doors, a double limiting effect can be achieved for both sets of lifting doors 12, improving the reliability of the interlocking of the coal yard truck access doors and preventing the collapse of the air membrane due to the simultaneous opening of the inner and outer access doors, thus ensuring the safe and stable operation of the coal yard air membrane.

[0033] The length of the crossbar 41 is equal to the distance between the two sets of corresponding positioning members 21 plus the depth of a notch 211. When one end of the crossbar 41 is slidably inserted into the positioning member 21 of one set of door bottom connectors 2, the surface of the other end of the crossbar 41 is on the same plane as the surfaces of the lifting member 32 and the positioning member 21 at the other set of door bottom connectors 2. Therefore, as long as the crossbar 41 moves towards the other set of door bottom connectors 2, the other end of the crossbar 41 will enter the notch 211 of the positioning member 21 at the other set of door bottom connectors 2. When the other end of the crossbar 41 is fully inserted into the notch 211, the surface of the other end of the crossbar 41 is on the same plane as the surfaces of the lifting member 32 and the positioning member 21 at the other set of door bottom connectors 2. The end of the crossbar 41 cancels the restriction on the positioning member 21 on this side, thus realizing that there is no situation where the crossbar 41 does not restrict the two sets of positioning members 21.

[0034] The notch 211 is a trapezoidal shape with the inner side as the upper base. The end 411 matches the size of the notch 211. As long as the positioning part 21 matches the position of the crossbar 41, the trapezoidal shape can ensure that the end 411 smoothly enters the position of the notch 211 when the crossbar 41 is driven to move, reducing the impact of small errors on the opening and closing of the car passage door 1.

[0035] Positioning components 21 are provided on both sides of each set of door bottom connectors 2, and two sets of movable components 4 are provided correspondingly distributed between the positioning components 21 on the same side of the two sets of door frames 11. Positioning components 21, limiting components 3, and movable components 4 are provided on both sides of the connecting channel 13, and are operated synchronously during the lifting and lowering of the two sets of lifting doors 12. The setting on both sides can improve the stability of the limiting of the lifting doors 12.

[0036] A sealing gasket 22 is installed at the bottom of the door bottom connector 2. The sealing gasket 22 is made of flexible material. When the lifting door 12 falls, the bottom of the positioning component 21 is placed on the surface of the first fixed seat 31 and is limited. The sealing gasket 22 is compressed and the bottom of the sealing gasket 22 is in close contact with the ground, ensuring that the coal yard gas film can be in normal working condition.

[0037] The above are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double limit protection coal yard truck access door, comprising a truck access door (1), the truck access door (1) comprises a door frame (11), a lifting door (12) and a connecting channel (13), the lifting door (12) is arranged in the door frame (11), the lifting door (12) is arranged with two groups of door frames (11), and the door frames (11) are communicated through the connecting channel (13), characterized in that: It also includes door bottom connecting piece (2) and movable assembly (4), the door bottom connecting piece (2) is fixedly connected at the bottom of lifting door (12), and the door bottom connecting piece (2) of two groups of lifting doors (12) is installed positioning piece (21) on the side towards connecting channel (13), the movable assembly (4) includes crossbar (41), the crossbar (41) is slidably connected two groups of positioning pieces (21), in the state that the crossbar (41) is limited to its positioning piece (21) at one end, the other end of crossbar (41) cancels the limitation of the other positioning piece (21). ​ 2. A dual containment protected coal car access door according to claim 1, wherein: The positioning piece (21) is provided on both sides of each group of door bottom connecting pieces (2), and the movable assembly (4) is provided between the positioning pieces (21) on the same side of the two groups of door frames (11).

3. A dual containment protected coal car access door according to claim 1, wherein: The bottom of each group of positioning pieces (21) is provided with a limiting assembly (3), the limiting assembly (3) includes a first fixed seat (31), a lifting piece (32) and a spring (33), the lifting piece (32) is slidably connected with the first fixed seat (31), and the lifting piece (32) and the first fixed seat (31) are connected by the spring (33).

4. A dual containment protected coal car access door according to claim 3, wherein: The upper surface of the first fixed seat (31) is provided with a groove (311), the lifting piece (32) penetrates the inside of the groove (311) of the first fixed seat (31), and the lifting piece (32) is matched with the inside of the groove (311).

5. A dual containment protected coal car access door according to claim 3, wherein: The two ends of the crossbar (41) are provided with end heads (411), and the side of the positioning piece (21) facing the crossbar (41) is provided with a notch (211), and the crossbar (41) is insertedly connected with the notch (211).

6. A dual containment protected coal car access door according to claim 5, wherein: The notch (211) is a trapezoidal shape with the upper bottom inside, and the end head (411) is matched with the size of the notch (211).

7. A dual containment protected coal car access door according to claim 1 wherein: The movable assembly (4) further includes a hydraulic device (42) and a second fixed seat (43), the body of the hydraulic device (42) is fixedly connected with the second fixed seat (43), and the output end of the hydraulic device (42) is fixedly connected with the crossbar (41).

8. A dual containment protected coal car access door according to claim 1 wherein: The bottom of the door bottom connecting piece (2) is provided with a sealing gasket (22), and the sealing gasket (22) is made of flexible material.

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