Calibrating device for compressed hydrogen dispenser

Abstract

The utility model discloses a compressed hydrogen dispenser calibrating device which comprises an outer shell, the outer shell is provided with a concave groove, the calibrating device further comprises a protective door, the protective door is provided with a connecting rod structure hinged to the outer shell, and the protective door is further provided with a locking structure locked with the outer shell. The locking structure comprises a lock hook block and a lock catch block capable of being hooked and locked with the lock hook block, the lock hook block is provided with a pressing piece and a linkage rod, the pressing piece is connected with the protective door in a sliding mode, the lock catch block is fixed to the shell, the protective door is provided with a guide piece, one end of the linkage rod is connected with the lock hook block, and the other end of the linkage rod is connected with the guide piece in a sliding mode. And the linkage rod is sleeved on the reset spring. According to the utility model, the air inlet, the display screen and other structures are arranged inside, so that collision and damage can be avoided during use or transportation, and the design aesthetic feeling of the calibrating device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of verification, and in particular relates to a verification device for a compressed hydrogen filling machine. Background Art

[0002] The hydrogen filling process involves trade settlement. According to the requirements of the National Measurement Law, hydrogen filling machines should be subject to mandatory inspection. The purpose of the compressed hydrogen filling machine inspection device is to inspect whether the metering of the compressed hydrogen filling machine is accurate and to ensure the implementation of the measurement law in the field of compressed hydrogen filling machines. At the same time, it is also of great significance to standardize the construction of compressed hydrogen filling machine manufacturers. However, some existing inspection devices directly expose the air inlet, exhaust port, liquid inlet, display screen and vent valve to the outside, and even protrude from the outline of the inspection device. During use or transportation, it is easy to cause the protruding structures such as the air inlet and display screen to be damaged by collision. Some inspection devices are also designed with protective doors to protect structures such as the air inlet and display screen, but their protective doors are single-opening doors that open flat, and they need to occupy a large space when opening the door. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a compressed hydrogen filling machine calibration device, which has structures such as an air inlet and a display screen built in, which can avoid bumps and damages during use or transportation and improve the design aesthetics of the calibration device.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A compressed hydrogen filling machine calibration device includes a shell, which is provided with an inwardly concave groove. The calibration device also includes a protective door, which is provided with a connecting rod structure hinged to the shell, and the protective door is also provided with a locking structure locked with the shell; the locking structure includes a lock hook block and a lock block that can be hooked and locked with the lock hook block, the lock hook block is provided with a pressing piece and a connecting rod, the pressing piece is slidably connected to the protective door, the lock block is fixed to the shell, the protective door is provided with a guide piece, one end of the connecting rod is connected to the lock hook block, and the other end of the connecting rod is slidably connected to the guide piece, and the connecting rod is sleeved on a reset spring.

[0006] In one embodiment of the utility model, the locking structure also includes a linkage plate and an auxiliary lock tongue, the linkage plate is fixed to the linkage rod, and the auxiliary lock tongue is arranged on the linkage plate, the protective door is provided with an auxiliary guide member, and the outer shell is provided with an auxiliary lock groove, the auxiliary lock tongue is slidably connected to the auxiliary guide member, and the auxiliary lock tongue can be inserted into the auxiliary lock groove.

[0007] In one embodiment of the utility model, the connecting rod structure includes a first rod and a second rod, the first rod is pivoted to the outer shell at point A, the first rod is pivoted to the protective door at point B, the second rod is pivoted to the outer shell at point M, and the second rod is pivoted to the protective door at point N.

[0008] In an embodiment of the present invention, when the protective door is closed, the protective door is arranged at an angle.

[0009] In an embodiment of the present invention, a bending section is provided on one side of point M of the second rod.

[0010] In an embodiment of the present invention, the protective door is provided with a supporting pad.

[0011] The technical solution of the utility model has at least the following advantages and beneficial effects:

[0012] The utility model has structures such as an air inlet and a display screen built into the groove of the shell, and adopts a protective door to realize the opening and closing of the groove, which can avoid bumping and damage during use or transportation and improve the design aesthetics of the calibration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the appearance of the verification device in the utility model;

[0015] Figure 2 This is a schematic diagram of the verification device of the present utility model with the protective door omitted;

[0016] Figure 3 This is a schematic diagram of the verification device in the present invention with the housing omitted and the groove bottom omitted;

[0017] Figure 4 for Figure 3 A partial diagram of the first connecting rod and the second connecting rod;

[0018] Figure 5 It is a front view of the verification device of the present utility model with the outside omitted;

[0019] Figure 6 for Figure 5 AA section view.

[0020] Icon: 1-housing, 11-groove, 12-step, 2-protective door, 211-first rod, 212-second rod, 22-support pad, 231-lock hook block, 232-lock block, 233-linking rod, 234-pressing member, 24-guide member, 25-reset spring, 26-linkage plate, 27-auxiliary lock tongue, 28-auxiliary guide member. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present utility model, it should be noted that if the terms "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "configure", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Please refer to Figure 1-6The present embodiment provides a compressed hydrogen filling machine calibration device, which is provided with a shell 1 and a protective door 2. The shell 1 is provided with an inwardly concave groove 11. The air inlet, the air outlet, the liquid inlet, the display screen and the vent valve are all installed in the groove 11. The protective door 2 is used to cover the groove 11, and the groove 11 is provided with a step 12. When the calibration device is not in use, the protective door 2 is placed on the step 12 of the groove 11 to cover the groove 11 to protect the air inlet, the display screen and the vent valve in the groove 11.

[0027] Specifically, the protective door 2 is provided with a connecting rod structure hinged with the outer shell 1, and the connecting rod structure includes a first rod 211 and a second rod 212. The first rod 211 is pivoted with the outer shell 1 at point A, the first rod 211 is pivoted with the protective door 2 at point B, the second rod 212 is pivoted with the outer shell 1 at point M, and the second rod 212 is pivoted with the protective door 2 at point N. When the protective door 2 is closed, the protective door 2 is tilted so that the protective door 2 can cover the groove 11 by its own weight without external force, so that the protective door 2 will not be easily opened uncontrollably. Further, when the protective door 2 is opened, a curved section is provided on one side of the point M of the second rod 212 to avoid interference between the second rod 212 and the outer shell 1. A rubber support pad 22 is also provided on the inner side of the protective door 2. When the protective door 2 is opened, the protective door 2 is supported on the outer shell 1 through the support pad 22 to prevent the protective door 2 from scratching the paint on the surface of the outer shell 1.

[0028] When the protective door 2 is closed, in order to lock the protective door 2 and prevent the protective door 2 from opening due to the overall large-angle tilt of the inspection device during transportation, the protective door 2 is also provided with a locking structure locked with the outer shell 1, the locking structure includes a lock hook block 231 and a lock block 232 that can be hooked and locked with the lock hook block 231, the lock hook block 231 is provided with a lock hook portion, the lock hook block 231 is provided with a pressing piece 234 and a connecting rod 233, the lock hook block 231, the pressing piece 234 and the connecting rod 233 are fixed as a whole, the pressing piece 234 is arranged at the door handle and is slidably connected to the protective door 2, when the pressing piece 234 is pressed, the lock hook block 231 and the connecting rod 233 move up and down together with the pressing piece 234. Furthermore, a guide member 24 with a guide hole is fixed on the inner side of the protective door 2, and a connecting rod 233 passes through the guide hole, and one end of the connecting rod 233 is slidably connected to the guide member 24. A return spring 25 is also sleeved on the connecting rod 233, and one end of the return spring 25 abuts against the guide member 24, and the other end of the return spring 25 abuts against the convex ring on the connecting rod 233. When the pressing member 234 is pressed, the connecting rod 233 moves downward as a whole with the pressing member 234, and at the same time compresses the return spring 25. When the pressing member 234 is released, under the action of the return spring 25, the connecting rod 233 and the pressing member 234 are reset and moved upward.

[0029] In this embodiment, the lock block 232 is fixed to the shell 1 and is located in the groove 11. The free end of the lock block 232 is provided with a through hole. When the protective door 2 is closed, the pressing piece 234 is pressed downward, and the lock hook portion of the lock hook block 231 is just located below the lock block 232. After the pressing piece 234 is released, the pressing piece 234 is reset, and the lock hook portion of the lock hook block 231 is inserted into the through hole of the lock block 232, thereby realizing the hook lock of the lock hook block 231 and the lock block 232, that is, realizing the hook lock of the protective door 2 and the shell 1.

[0030] In this embodiment, the locking structure also includes a linkage plate 26 and an auxiliary lock tongue 27. The linkage plate 26 is fixed to the linkage rod 233, and the auxiliary lock tongue 27 is installed on the linkage plate 26. The protective door 2 is provided with an auxiliary guide member 2824, and the outer shell 1 is provided with an auxiliary lock groove. The auxiliary lock tongue 27 is slidably connected with the auxiliary guide member 2824. When the protective door 2 is closed, the pressing member 234 is pressed downward, and the auxiliary lock tongue 27 and the pressing member 234 descend synchronously. After the pressing member 234 is released, the pressing member 234 is reset, and the auxiliary lock tongue 27 is inserted into the auxiliary lock groove.

[0031] In this embodiment, the air inlet, display screen and other structures are built into the groove 11 of the housing 1, and the protective door 2 is used to open and close the groove 11. During use or transportation, it can avoid bumps and damages and enhance the design aesthetics of the calibration device.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Compressed hydrogen filling machine calibration device, including the housing, It is characterized in that The housing is provided with an inwardly concave groove, and the verification device further comprises a protective door, the protective door is provided with a connecting rod structure hinged with the housing, and the protective door is also provided with a locking structure locked with the housing; The locking structure comprises a lock hook block and a lock buckle block that can be locked with the lock hook block, the lock hook block is provided with a pressing piece and a linkage rod, the pressing piece is slidably connected to the protective door, and the lock buckle block is fixed to the housing. The protective door is provided with a guide piece, one end of the linkage rod is connected with the lock hook block, the other end of the linkage rod is slidably connected with the guide piece, and the linkage rod is sleeved on the reset spring.

2. The compressed hydrogen filling machine calibration device according to claim 1, It is characterized in that The locking structure also includes a linkage plate and an auxiliary lock tongue. The linkage plate is fixed to the linkage rod, and the auxiliary lock tongue is arranged on the linkage plate. The protective door is provided with an auxiliary guide piece, and the shell is provided with an auxiliary lock groove. The auxiliary lock tongue is slidably connected to the auxiliary guide piece, and the auxiliary lock tongue can be inserted into the auxiliary lock groove.

3. The compressed hydrogen filling machine calibration device according to claim 1, It is characterized in that The connecting rod structure includes a first rod and a second rod. The first rod is pivotally connected to the shell at point A, the first rod is pivotally connected to the protective door at point B, the second rod is pivotally connected to the shell at point M, and the second rod is pivotally connected to the protective door at point N.

4. The compressed hydrogen filling machine calibration device according to claim 3, It is characterized in that When the protective door is closed, the protective door is arranged at an angle.

5. The compressed hydrogen filling machine calibration device according to claim 3, It is characterized in that A bending section is provided on one side of point M of the second rod.

6. The compressed hydrogen filling machine calibration device according to claim 1, It is characterized in that The protective door is provided with a supporting cushion block.

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