Bidirectional limiting door limiter and door body structure
By designing a bidirectional door limiter, the safety risk of sparks generated by the collision of the skid-mounted equipment door in the hydrogen refueling station under wind force was solved, thereby improving the safety of the equipment, simplifying operation, and reducing costs.
Patent Information
- Application Number
- CN202521018541.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-01
- Estimated Expiration
- 2035-05-22
AI Technical Summary
The doors of existing hydrogen refueling station skid-mounted equipment are prone to uncontrolled swaying under natural wind force, which can cause the doors to collide with the frame and generate mechanical sparks, posing a potential safety risk. Furthermore, routine inspections increase this risk, and existing technologies have failed to effectively prevent and control it.
Design a bidirectional door limiter, including a limit rod and a mounting plate. By cooperating with the locking rod of the limit rod and the limit groove of the mounting plate, the door panel can be stably locked at different angle positions to avoid sparks caused by collision.
It effectively avoids mechanical collisions and sparks between the door and the frame, improves the safety of equipment maintenance, has a compact structure, is easy to operate, and is low in cost.
Smart Images
Figure CN224187375U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydrogen refueling technology for new energy vehicles, and in particular to a bidirectional limiting door limiter and door structure. Background Technology
[0002] Against the backdrop of the integrated development of hydrogen energy equipment, enclosed skid-mounted equipment has become the mainstream packaging form for hydrogen refueling station equipment due to its advantages such as rainproof, sound insulation and easy factory prefabrication.
[0003] In existing technologies, skid-mounted equipment often employs a sealed structure similar to that of shipping containers, mitigating operational risks through multi-layered safety protection systems (such as hydrogen leak monitoring, explosion-proof devices, and emergency shutdown modules). For example, ultrasonic gas leak detectors are installed to monitor hydrogen concentration in real time, ultraviolet-infrared flame detectors are configured to identify invisible flames, and lightning protection grounding systems and electrostatic discharge devices are used to eliminate the risk of electrical sparks. However, such equipment faces structural defects in scenarios requiring frequent inspections: the skid doors are numerous and large (usually exceeding the specifications of standard container doors), making them prone to uncontrolled swaying under natural wind forces, and the metal-to-metal collision between the doors and the frame may generate mechanical sparks. This risk source is not covered by existing safety systems because traditional explosion-proof designs mainly target internal process stages and do not provide dynamic protection for movable external structures.
[0004] More seriously, the mandatory daily equipment inspections required by current standards increase the frequency of door opening and closing, exposing worn hinge parts to a hydrogen-rich environment and creating a risk of hydrogen accumulation coupled with spark induction. Although existing technologies have achieved active protection such as 3-second emergency cut-off in case of hydrogen refueling hose rupture and multi-channel fault isolation, there is still a technological gap in spark control for passive mechanical collisions, which has become a key bottleneck restricting the improvement of the safety performance of skid-mounted equipment. Utility Model Content
[0005] The purpose of this utility model is to provide a bidirectional limiting door limiter and door structure to address the above-mentioned shortcomings, thereby solving the problem that in the prior art, the door is blown and collided during daily equipment inspections, generating sparks and posing a certain potential danger.
[0006] This utility model is achieved through the following solution:
[0007] A bidirectional door limiter includes a limit rod and a mounting plate; the limit rod is movably mounted on a door panel structure, and the mounting plate is mounted on a door frame post with hinges; a locking rod is provided on the limit rod; a limit groove that cooperates with the locking rod is provided on the mounting plate; the locking rod can be engaged in the limit groove to achieve limiting at different angles.
[0008] Based on the structure of the above-mentioned bidirectional limiting door limiter, the limiting rod specifically includes a first connecting rod, a second connecting rod, a lifting pin shaft, and a locking rod; the first connecting rod and the second connecting rod are set at a predetermined angle, and the lifting pin shaft is located on the end of the first connecting rod away from the second connecting rod.
[0009] Based on the structure of the aforementioned bidirectional door limiter, the door structure is provided with a connecting rotating hole that mates with the lifting pin shaft. The size of the connecting rotating hole is not smaller than the size of the lifting pin shaft, so that the lifting pin shaft can rotate and move freely within the connecting rotating hole.
[0010] Based on the structure of the above-mentioned bidirectional limiting door limiter, one end of the lifting pin shaft is fixedly connected to the first connecting rod, and the other end is provided with a pin hole and a locking pin; the size of the locking pin is not less than the size of the connecting rotating hole; the locking pin is engaged in the pin hole.
[0011] Based on the structure of the aforementioned bidirectional door limiter, the door structure is further provided with a locking hole, and the limiting rod is provided with a locking protrusion; the size of the locking protrusion is adapted to the size of the locking hole.
[0012] Based on the structure of the aforementioned bidirectional limiting door limiter, the locking protrusion is disposed on the end of the first connecting rod away from the lifting pin shaft, and the locking protrusion is fixedly connected to the first connecting rod.
[0013] Based on the structure of the above-mentioned bidirectional limiting door limiter, the card seat plate is a rectangular plate in general, and the card seat plate includes a plate structure and limiting holes; the limiting holes are arranged in two parallel groups on the plate structure, and each group of limiting holes is set with three limiting holes.
[0014] Based on the structure of the aforementioned bidirectional door limiter, the limiting rod is a non-linear structure, and at least one locking rod is provided at the bottom of the limiting rod.
[0015] Based on the structure of the aforementioned bidirectional door limiter, the horizontal height positions of the limit rod and the card seat plate are matched.
[0016] This solution also discloses a door structure, including a door panel structure, a door frame post, a connecting frame, and a bidirectional limiting door limiter; the limiting rod of the bidirectional limiting door limiter is connected to the connecting frame, and the card seat plate is connected to the door frame post.
[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0018] 1. With this solution, when it is necessary to limit the door panel structure, the locking rod is inserted into the limiting groove at the predetermined position to lock the door panel structure at different angles. This can prevent collisions with the door frame or the rigid structure inside the skid-mounted equipment due to unexpected situations after the door panel structure is opened, thus avoiding sparks generated by mechanical collisions and improving the safety of maintenance.
[0019] 2. This solution is simple to manufacture and low in cost. Furthermore, the use of non-linear tie rods makes the overall dimensions more compact and allows for flexible height adjustment after installation.
[0020] 3. This solution allows for manual selection of the limit switch after the door is opened, making it simple to operate and more effective (standard parts may experience jamming when opening and closing the door). Attached Figure Description
[0021] Appendix Fig. 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Appendix Fig. 2 This is a schematic diagram of the structure of the limiting rod and the card seat plate used together in this utility model;
[0023] Figure descriptions: 1. Limiting rod; 2. Card seat plate; 3. Door panel structure; 4. Door frame post; 5. Locking rod; 6. Limiting groove; 7. Connecting frame; 11. First connecting rod; 12. Second connecting rod; 13. Lifting pin shaft; 14. Pin hole; 15. Carding pin; 16. Locking protrusion; 21. Plate structure. Detailed Implementation
[0024] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0025] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.
[0028] Example 1
[0029] like Figs. 1-2 As shown, this utility model provides a technical solution:
[0030] A bidirectional door limiter includes, but is not limited to, a limit rod 1 and a mounting plate 2; the limit rod 1 is movably mounted on a door panel structure 3, and the mounting plate 2 is mounted on a door frame post 4 with hinges; a locking rod 5 is provided on the limit rod 1; a limit groove 6 is provided on the mounting plate 2 to cooperate with the locking rod 5; the locking rod 5 can be engaged in the limit groove 6 to achieve limiting at different angles.
[0031] Based on the above structure, when it is necessary to limit the door panel structure 3, the locking rod 5 is inserted into the limiting groove 6 at the predetermined position to lock the door panel structure 3 at different angles. This can prevent the door panel structure 3 from colliding with the door frame or the rigid structure inside the skid-mounted equipment due to unexpected situations after it is opened, thus avoiding sparks generated by mechanical collisions and improving the safety of maintenance.
[0032] As an example, the limiting rod 1 is a non-linear structure, and at least one locking rod 5 is set at the bottom of the limiting rod 1.
[0033] Based on the above structure, by setting the limiting rod 1 as a non-linear structure, the size of the limiting rod 1 and the card seat plate 2 can be designed to be very small, thus occupying a small space, making the whole structure more compact, and avoiding interference when the human body enters or exits.
[0034] As an example, the horizontal heights of the limiting rod 1 and the mounting plate 2 are matched. This makes the overall force distribution more stable and also facilitates the locking rod 5 being engaged into the limiting groove 6.
[0035] As an example, the limiting rod 1 may specifically include a first connecting rod 11, a second connecting rod 12, a lifting pin shaft 13, and a locking rod 5; the first connecting rod 11 and the second connecting rod 12 are set at a predetermined angle, and the included angle is preferably an obtuse angle; the lifting pin shaft 13 is located on the end of the first connecting rod 11 away from the second connecting rod 12.
[0036] The door structure is provided with a connecting pivot hole that mates with the lifting pin shaft 13. The size of the connecting pivot hole is not smaller than the size of the lifting pin shaft 13, so that the lifting pin shaft 13 can rotate and rise and fall freely in the connecting pivot hole.
[0037] Based on the above structure, when it is necessary to insert the locking rod 5 into the limiting groove 6, the limiting rod 1 is lifted a certain distance by hand and the direction of the limiting rod 1 is rotated to insert the locking rod 5 into the predetermined limiting groove 6.
[0038] As an example, one end of the lifting pin shaft 13 is fixedly connected to the first connecting rod 11, and the other end is provided with a pin hole 14 and a locking pin 15; the size of the locking pin 15 is not less than the size of the connecting rotating hole; the locking pin 15 is inserted into the pin hole 14.
[0039] Based on the above structure, by setting the size of the locking pin 15 to be no less than the size of the connecting rotating hole, the extreme position of the lifting pin shaft 13 in the height direction can be limited, preventing the lifting pin shaft 13 from disengaging from the connecting rotating hole when the operator lifts the limit rod 1, thus avoiding the risk of the lifting pin shaft 13 falling.
[0040] As an example, a locking hole can also be provided on the door structure, and a locking protrusion 16 can be provided on the limiting rod 1; the size of the locking protrusion 16 is adapted to the size of the locking hole.
[0041] Based on the above structure, when it is not necessary to limit the angle of the door structure, the limiting rod 1 is rotated back onto the door structure, and the locking protrusion is inserted into the locking hole to fix the limiting rod 1 and avoid mechanical collision between the limiting rod 1 and the outside world.
[0042] As an example, the locking protrusion 16 is disposed on the end of the first connecting rod 11 away from the lifting pin shaft 13, and the locking protrusion 16 is fixedly connected to the first connecting rod 11.
[0043] As an example, the card holder plate 2 is a rectangular plate in general. The card holder plate 2 includes a plate structure 21 and limiting holes. The limiting holes are arranged in two parallel groups on the plate structure 21, and each group has three limiting holes.
[0044] Based on the above structure, the worker manually selects different holes on the card plate 2 and uses the locking rod 5 to lock into the limiting holes at different positions to restrict the position of the door. Selecting different holes can make the door structure open and close at 75-100°.
[0045] Example 2
[0046] This embodiment provides a door structure, which includes, but is not limited to, a door panel structure 3, a door frame post 4, a connecting frame 7, and a bidirectional limiting door limiter; the limiting rod 1 of the bidirectional limiting door limiter is connected to the connecting frame 7, and the card seat plate 2 is connected to the door frame post 4.
[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A bidirectional limiting gate limiter, characterized in that: It includes a limiting rod and a mounting plate; the limiting rod is movably assembled on the door panel structure, and the mounting plate is set on the door frame post with hinges; the limiting rod is provided with a locking rod; the mounting plate is provided with a limiting groove that cooperates with the locking rod; the locking rod can be engaged in the limiting groove to achieve limiting at different angles.
2. The bidirectional limiting gate limiter as described in claim 1, characterized in that: The limiting rod specifically includes a first connecting rod, a second connecting rod, a lifting pin shaft, and a locking rod; the first connecting rod and the second connecting rod are set at a predetermined angle, and the lifting pin shaft is located on the end of the first connecting rod away from the second connecting rod.
3. A bidirectional limiting gate limiter as described in claim 2, characterized in that: The door panel structure is provided with a connecting pivot hole that mates with the lifting pin shaft. The size of the connecting pivot hole is not smaller than the size of the lifting pin shaft, so that the lifting pin shaft can rotate and move freely within the connecting pivot hole.
4. A bidirectional limiting gate limiter as described in claim 3, characterized in that: One end of the lifting pin shaft is fixedly connected to the first connecting rod, and the other end is provided with a pin hole and a locking pin; the size of the locking pin is not less than the size of the connecting rotating hole; the locking pin is engaged in the pin hole.
5. A bidirectional limiting gate limiter as described in claim 4, characterized in that: The door panel structure is also provided with a locking hole, and the limiting rod is provided with a locking protrusion; the size of the locking protrusion is adapted to the size of the locking hole.
6. A bidirectional limiting gate limiter as described in claim 5, characterized in that: The locking protrusion is located on the end of the first connecting rod away from the lifting pin shaft, and the locking protrusion is fixedly connected to the first connecting rod.
7. A bidirectional limiting gate limiter as described in claim 6, characterized in that: The card holder plate is a rectangular plate, and the card holder plate includes a plate structure and limiting holes; the limiting holes are arranged in two parallel groups on the plate structure, and each group has three limiting holes.
8. A bidirectional limiting gate limiter as described in claim 7, characterized in that: The limiting rod is a non-linear structure, and at least one locking rod is provided at the bottom of the limiting rod.
9. A bidirectional limiting gate limiter as described in claim 8, characterized in that: The limiting rod and the card seat plate are set to match each other in terms of horizontal height.
10. A door structure, characterized in that: It includes a door panel structure, a door frame post, a connecting frame, and a bidirectional door limiter as described in any one of claims 1 to 9; the limiting rod of the bidirectional door limiter is connected to the connecting frame, and the card seat plate is connected to the door frame post.