Key manager identification structure
By using the on-off signal of the micro switch in the key manager to detect the placement status of the key, the problem of susceptibility to detection sensitivity in the prior art is solved, and the convenience of simple and reliable key detection and installation and debugging is achieved.
Patent Information
- Application Number
- CN202422027092.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The detection sensitivity of the existing key manager is easily affected by environmental pollution and processing accuracy, which leads to cumbersome installation and difficult debugging, and may affect the detection accuracy during later use.
The on-off signal of the micro switch is used to detect whether the controlled key is placed correctly. The baffle is pushed under the external force of the key, which drives the linkage lever to move, thereby driving the contact state of the micro switch to flip and transmits the signal to the safety interlock controller.
It realizes simple and reliable detection of the key manager, is easy to install and debug, reduces the risk that detection sensitivity is affected by the environment and processing accuracy, and improves the accuracy and reliability of the detection.
Smart Images
Figure CN222952499U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of key management, in particular to a key manager identification structure. Background Art
[0002] The key manager is used to manage tank truck keys in dangerous places of petrochemical industry such as oil depots and oil distribution platforms. It can detect whether the key is inserted and send back the signal to the safety interlock controller. It automatically controls the opening and closing of the key manager door according to the loading process to achieve effective loading safety interlock control. It can fundamentally solve the problem of starting the vehicle before the oil distribution is completed due to the driver's failure to operate according to the requirements or operating errors.
[0003] Avoid safety accidents such as leakage of dangerous goods, breaking of crane pipes or lines, and other more serious safety accidents such as fire and explosion caused by vehicles not being turned off during loading. It can also cooperate with the oil spill electrostatic protector to promptly issue audible and visual alarm information so that on-site staff can promptly discover and deal with problems.
[0004] The existing key detection device uses an infrared sensor to detect whether the key is placed correctly. The sensor is divided into a transmitting device and a receiving device, and a two-way shooting method is used to detect the controlled object. The transmitting device and the receiving device must be installed in alignment with each other, and the transmitting surface and the receiving surface must be clean and free of stains and obstructions. The controlled key must be placed between the detection devices (between the transmitting device and the receiving device), otherwise it cannot be detected whether the key is placed. The existing device is cumbersome to install, requires high debugging accuracy, and has high processing requirements. The corresponding processing cost will increase. In later use, factors such as environmental pollution will also affect the sensitivity of the detection device. Utility Model Content
[0005] The utility model aims to provide a key manager identification structure, aiming to solve the problem in the prior art that the detection sensitivity of the key manager is easily affected.
[0006] The utility model is implemented as follows: a key manager identification structure includes a mounting plate, a storage table, and a micro switch electrically connected to a safety interlock controller; the storage table is horizontally mounted on the mounting plate; a baffle is hingedly connected to the mounting plate; the baffle and the micro switch are connected by a linkage rod; a reset mechanism for driving the linkage rod to return to its position is connected to the linkage rod; the baffle is longitudinally arranged on the middle part of the storage table; a clamping area for placing and clamping a key is enclosed between the baffle and the storage table; and the length of the key is greater than the length of the clamping area.
[0007] Furthermore, one end of the storage table is provided with an upwardly protruding folding plate, the folding plate and the baffle are arranged relatively spaced apart, and the baffle, the storage table and the folding plate enclose the clamping area.
[0008] Furthermore, the top of the baffle is hingedly mounted on the mounting plate via a hinge shaft, and a swing gap is provided between the bottom of the baffle and the top of the storage table.
[0009] Furthermore, the baffle plate has an abutment bar that is movably abutted against the mounting plate, the abutment bar and the baffle plate are perpendicular to each other, and the top of the abutment bar is hingedly mounted on the mounting plate via the hinge shaft.
[0010] Furthermore, the baffle is mounted on the front end of the mounting plate, and the micro switch is mounted on the rear end of the mounting plate.
[0011] Furthermore, a track groove for the linkage rod to pass through is opened on the mounting plate, and the track groove passes through the mounting plate. The track groove is arranged in an arc shape. One end of the linkage rod is connected to the middle part of the abutment bar, and the other end of the linkage rod is respectively connected to the micro switch and the reset mechanism.
[0012] Furthermore, the reset mechanism includes a reset spring and a fixed column, one end of the fixed column is fixed in the mounting plate, the other end of the fixed column is exposed outside the mounting plate and connected to one end of the reset spring, and the other end of the reset spring is connected to the other end of the linkage rod.
[0013] Furthermore, the micro switch is connected to a signal trigger point and a contact spring, one end of the contact spring is connected to the micro switch, the middle of the contact spring movably presses against the signal trigger point, and the other end of the contact spring movably presses against the linkage rod.
[0014] Furthermore, the contact spring piece is arranged in an inclined shape, the inner side of the middle part of the contact spring piece movably presses against the signal trigger point, and the outer side of the other end of the contact spring piece movably presses against the other end of the linkage rod.
[0015] Furthermore, the micro switch is connected to an LED indicator light which can change the color of the light to display the status.
[0016] Compared with the prior art, the key manager identification structure provided by the utility model adopts the on-off signal of the microswitch to detect whether the controlled key is placed correctly. The structure is simple and reliable, and is easy to install and debug. The key is placed in the clamping area, so that the baffle is pushed under the external force of the key, and the baffle drives the linkage rod to move, thereby driving the contact state of the microswitch to flip, and the microswitch detects the presence of the key, and the microswitch transmits the signal to the safety interlock controller; after the key is taken out, the reset mechanism drives the linkage rod and the baffle to return to their positions, thereby driving the contact state of the microswitch to recover, and the microswitch transmits the signal to the safety interlock controller, which solves the problem that the detection sensitivity of the key manager is easily affected. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front perspective schematic diagram of the key manager identification structure provided by the utility model;
[0018] Figure 2 It is a rear view structural schematic diagram of the key manager identification structure provided by the utility model.
[0019] In the figure: a mounting plate 10, a storage table 20, a baffle 30, a linkage rod 40, a micro switch 50, a reset mechanism 60, a clamping area 70, a track groove 11, a folding plate 21, abutment strip 31, a hinge shaft 32, a contact spring 51, a signal trigger point 52, a reset spring 61, and a fixing column 62. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0021] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0022] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present utility model. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0023] Reference Figure 1-2 As shown, it is a preferred embodiment provided by the utility model.
[0024] The key manager identification structure includes a mounting plate 10, a storage table 20, and a micro switch 50 electrically connected to the safety interlock controller. The storage table 20 is horizontally mounted on the mounting plate 10, and a baffle 30 is hingedly connected to the mounting plate 10. The baffle 30 and the micro switch 50 are connected by a linkage rod 40. The linkage rod 40 is connected to a reset mechanism 60 for driving the linkage rod 40 to return to its position. The baffle 30 is longitudinally arranged in the middle of the storage table 20. A clamping area 70 for placing and clamping a key is formed between the baffle 30 and the storage table 20, and the length of the key is greater than the length of the clamping area 70.
[0025] The key manager identification structure provided above uses the on-off signal of the microswitch 50 to detect whether the controlled key is placed correctly. The structure is simple and reliable, and is easy to install and debug. The key is placed in the clamping area 70, so that the baffle 30 is pushed under the external force of the key, and the baffle 30 drives the linkage rod 40 to move, thereby driving the contact state of the microswitch 50 to flip, and the microswitch 50 detects the presence of the key, and the microswitch 50 transmits the signal to the safety interlock controller; after the key is taken out, the reset mechanism 60 drives the linkage rod 40 and the baffle 30 to return to their positions, thereby driving the contact state of the microswitch 50 to recover, and the microswitch 50 transmits the signal to the safety interlock controller, which solves the problem that the detection sensitivity of the key manager is easily affected.
[0026] The micro switch 50 is a switch having a tiny contact gap and a snap-action mechanism, a contact structure that performs a switching action with a specified stroke and a specified force, covered with a flame-retardant casing, and having a linkage rod 40 on the outside. The switching function is achieved through the action of the contacts, has a large load capacity, strong anti-interference ability, anti-oxidation contacts, and a long mechanical strength and service life.
[0027] This switch has two state outputs: "normally open" (disconnected) and "normally closed" (closed). Normally open is represented by "NO", normally closed is represented by "NC", and the common terminal is represented by "COM". The common terminal is connected to any other contact (normally open or normally closed), that is, the corresponding on-off signal is output. When the linkage rod 40 of the switch is subjected to an external action force, this force will be transmitted to the internal contact of the micro switch 50. When the applied external force reaches the force required for the action, the contact will make a corresponding action under the force, the current state will be reversed, and the output signal will also be reversed, that is, the output is normally open before the contact is actuated, and the output is normally closed after the contact is actuated.
[0028] When the applied external force exceeds the rated pressure value of the contact, the internal limit structure of the micro switch 50 will absorb the rated pressure, thereby protecting the service life of the contact;
[0029] When in normal use, the baffle 30 is gently pushed to the left and the key is placed on the storage table 20. Since the baffle 30 is connected to the reset mechanism 60 through the linkage rod 40, the force of pushing the baffle 30 is transmitted to the reset mechanism 60, so that the reset spring 61 of the reset mechanism 60 is pulled and the stroke becomes longer. At this time, a certain amount of kinetic energy will be stored in the reset spring 61, and the position deviation of the baffle 30 will also drive the contact of the micro switch 50 to move; the contact state is reversed, and the micro switch 50 starts to output the current reversal signal;
[0030] When the baffle 30 is released, the pressure on the baffle 30 is terminated, and the return spring 61 begins to release the stored kinetic energy, exerting a reverse force on the baffle 30, thereby returning a certain force to the controlled key, so that the controlled key is confined in the clamping area 70 on the storage table 20. At this time, the micro switch 50 can detect the position change of the baffle 30, thereby triggering the contact action of the micro switch 50, flipping the current signal state, and outputting the corresponding on-off signal to the safety interlock controller to close the door of the key manager. After receiving this signal, the safety interlock controller outputs an enable and locks the door of the key manager to prevent the door from being opened illegally to remove the key. The on and off status of the two-color LED indicator light can be observed through the transparent window on the door. Different light colors are displayed to indicate different current states, allowing the operator to observe the current situation very intuitively.
[0031] When taking out the key, it is necessary to first unlock the key manager door before taking out the key. Since the baffle 30 is connected to a reset spring 61, the baffle 30 can automatically return to the initial position after taking out the key, and the output state is reset to the initial default state, waiting for the next trigger operation.
[0032] In this embodiment, an upwardly protruding folding plate 21 is provided on one end of the storage platform 20 . The folding plate 21 and the baffle plate 30 are arranged relatively spaced apart from each other. The baffle plate 30 , the storage platform 20 and the folding plate 21 form a clamping area 70 .
[0033] The baffle plate 30 and the folding plate 21 form a certain clamping force on the key to clamp the key and prevent the key from shaking. The folding plate 21 can effectively prevent potential risks such as displacement and sliding of the key caused by vibration.
[0034] The folding plate 21 is arranged to be inclined from bottom to top toward the clamping area 70, so that the folding plate 21 can enclose the top of the key to prevent the key from being detached or turned over at will.
[0035] In this embodiment, the top of the baffle 30 is hingedly mounted on the mounting plate 10 via a hinge shaft 32, and there is a swing gap between the bottom of the baffle 30 and the top of the storage table 20. In this way, the baffle 30 can rotate on the mounting plate 10 via the hinge shaft 32.
[0036] In this embodiment, the baffle 30 has an abutment bar 31 that is movably abutted against the mounting plate 10. The abutment bar 31 and the baffle 30 are perpendicular to each other, and the top of the abutment bar 31 is hingedly mounted on the mounting plate 10 through a hinge shaft 32. In this way, the baffle 30 can be more closely and stably connected to the mounting plate 10 through the abutment bar 31.
[0037] In this embodiment, the baffle 30 is mounted on the front end of the mounting plate 10, and the micro switch 50 is mounted on the rear end of the mounting plate 10. In this way, the micro switch 50 can be prevented from interfering with the swing of the baffle 30.
[0038] In this embodiment, a track groove 11 for the linkage rod 40 to penetrate is provided on the mounting plate 10, the track groove 11 penetrates the mounting plate 10, and the track groove 11 is arranged in an arc shape, one end of the linkage rod 40 is connected to the middle part of the abutment strip 31, and the other end of the linkage rod 40 is respectively connected to the micro switch 50 and the reset mechanism 60. In this way, the swing range of the baffle 30 can be limited by the track groove 11, so as to prevent the baffle 30 from swinging excessively and affecting the storage of the key.
[0039] In this embodiment, the reset mechanism 60 includes a reset spring 61 and a fixed column 62, one end of the fixed column 62 is fixed in the mounting plate 10, the other end of the fixed column 62 is exposed outside the mounting plate 10 and connected to one end of the reset spring 61, and the other end of the reset spring 61 is connected to the other end of the linkage rod 40. In this way, the reset spring 61 can borrow force from the mounting plate 10 through the fixed column 62 to drive the linkage rod 40 to reset.
[0040] The micro switch 50 is connected to a signal trigger point 52 and a contact spring 51 . One end of the contact spring 51 is connected to the micro switch 50 . The middle of the contact spring 51 movably presses against the signal trigger point 52 . The other end of the contact spring 51 movably presses against the linkage rod 40 .
[0041] The contact spring 51 is arranged in an inclined shape, with the inner side of the middle part of the contact spring 51 movably pressed against the signal trigger point 52 , and the outer side of the other end of the contact spring 51 movably pressed against the other end of the linkage rod 40 .
[0042] In this embodiment, an LED indicator light that can change color to display the state is connected to the micro switch 50. By observing the on and off state of the two-color LED indicator light, different light colors are displayed to indicate different current states, so that the operator can observe the current state very intuitively.
[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A key manager identification structure, characterized in that: It includes a mounting plate, a storage table, and a micro switch electrically connected to a safety interlock controller, the storage table is horizontally mounted on the mounting plate, a baffle is hingedly connected to the mounting plate, the baffle and the micro switch are connected by a linkage rod, the linkage rod is connected to a reset mechanism for driving the linkage rod to return to its position, the baffle is longitudinally arranged in the middle of the storage table, a clamping area for placing and clamping a key is formed between the baffle and the storage table, and the length of the key is greater than the length of the clamping area.
2. The key manager identification structure according to claim 1, characterized in that: One end of the storage platform is provided with an upwardly protruding folding plate, the folding plate and the baffle are arranged relatively spaced apart, and the baffle, the storage platform and the folding plate are enclosed to form the clamping area.
3. The key manager identification structure according to claim 2, characterized in that: The top of the baffle is hingedly mounted on the mounting plate via a hinge shaft, and a swing gap is provided between the bottom of the baffle and the top of the storage table.
4. The key manager identification structure according to claim 3, characterized in that: The baffle plate is provided with an abutment bar which is movably abutted against the mounting plate. The abutment bar and the baffle plate are perpendicular to each other, and the top of the abutment bar is hingedly mounted on the mounting plate through the hinge shaft.
5. The key manager identification structure according to claim 4, characterized in that: The baffle is mounted on the front end of the mounting plate, and the micro switch is mounted on the rear end of the mounting plate.
6. The key manager identification structure according to claim 5, characterized in that: The mounting plate is provided with a track groove for the linkage rod to pass through, the track groove passes through the mounting plate, and the track groove is arranged in an arc shape. One end of the linkage rod is connected to the middle part of the abutment strip, and the other end of the linkage rod is respectively connected to the micro switch and the reset mechanism.
7. The key manager identification structure according to claim 6, characterized in that: The reset mechanism includes a reset spring and a fixed column, one end of the fixed column is fixed in the mounting plate, the other end of the fixed column is exposed outside the mounting plate and connected to one end of the reset spring, and the other end of the reset spring is connected to the other end of the linkage rod.
8. The key manager identification structure according to claim 7, characterized in that: The micro switch is connected with a signal trigger point and a contact spring, one end of the contact spring is connected to the micro switch, the middle of the contact spring movably presses against the signal trigger point, and the other end of the contact spring movably presses against the linkage rod.
9. The key manager identification structure according to claim 8, characterized in that: The contact spring piece is arranged in an inclined shape, the inner side of the middle part of the contact spring piece movably presses against the signal trigger point, and the outer side of the other end of the contact spring piece movably presses against the other end of the linkage rod.
10. The key manager identification structure according to any one of claims 1 to 9, characterized in that: The micro switch is connected with an LED indicator light which can change the color of the light to show the status.