Radiation protection door lock mechanism
By introducing mechanical structures such as lock cylinder, guide rod, lock buckle and gear into the radiation protection door lock, the separation and reconnection of the transmission shaft and the screw rod is achieved, which solves the problem that the protective door cannot be opened during equipment failure and ensures that in the event of a fault condition The lower protective door is operating normally.
Patent Information
- Application Number
- CN202420032482.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-08
AI Technical Summary
The existing radiation protection door lock cannot be opened in time when the equipment fails or power is cut off, resulting in the protective door being closed and requires professional intervention.
A radiation protection door lock mechanism is designed. By setting a lock cylinder and a guide rod between the transmission shaft and the screw, the snap connection between the lock and the lock pin is used to combine the mechanical structure of the gear and the pedal to realize the transmission shaft and the wire. The separation and reconnection of the rod ensures that the protective door can be opened normally in the event of a failure.
When the drive shaft fails, through the design of the mechanical structure, the protective door can be in a movable state to avoid the problem of inability to open due to the fault and ensure that it can still be opened and closed normally in the event of a fault.
Smart Images
Figure CN222140955U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door locks, in particular to a radiation protection door lock mechanism. Background Art
[0002] The door lock mechanism is a mechanical device used to control the opening and closing of the door. The lock body is the core part of the door lock mechanism, which is usually fixed on the door. The door is opened and closed by the cooperation of the lock cylinder and the lock tongue. The lock cylinder is the rotating part. The extension and retraction of the lock tongue is controlled by inserting the key and turning the key. The key is a tool to control the rotation of the lock cylinder. Different keys correspond to different lengths of pins. The extension and retraction of the lock tongue is controlled by inserting the key and turning it.
[0003] Radiation protection doors are a special type of door, mainly used to prevent radiation leakage. They are usually used in nuclear medicine laboratories, imaging centers, hospital radiology departments and other places where radiation leakage needs to be prevented. The main function of radiation protection doors is to block radiation and protect people's health and safety.
[0004] Most of the existing protective door lock mechanisms are electrically controlled. Once the equipment fails or the power is off, the protective door will be in a closed state, and professionals are required to operate the equipment to open the faulty protective door. Therefore, the existing protective door locks cannot control the opening of the protective door in time when a failure occurs. Utility Model Content
[0005] Purpose of the utility model: to provide a radiation protection door lock mechanism to solve the above problems existing in the prior art.
[0006] Technical solution: A radiation protection door lock mechanism, comprising:
[0007] A door frame, a protective door installed in the door frame, a vertical plate installed between the door frames, and a door lock assembly installed in the door frame and the vertical plate;
[0008] The door lock assembly includes a transmission shaft placed in the door frame, a lock cylinder installed at one end of the transmission shaft, a guide rod installed on the transmission shaft at the position where the lock cylinder and the transmission shaft cooperate, an annular tooth and a lock buckle are provided on the lock cylinder, a lock pin placed at the lock buckle and installed on the screw rod, and a swing tooth meshing with the annular tooth and movably cooperating with the vertical plate;
[0009] A rectangular hole is provided on the swing tooth, a fixing pin is placed at the rectangular hole and installed on the gear, the gear is movably installed on the vertical plate, a rack meshing with the gear, and the rack is provided with a plurality of pedals passing through the vertical plate; a sliding groove is provided on the door frame, and a sliding block passes through the sliding groove and is connected to the protective door and the screw rod.
[0010] In a further embodiment, the lock cylinder is sleeved on one end of the transmission shaft, and a driving motor is provided at the other end of the transmission shaft. The protective door is slidably matched with the door frame, and a groove is provided at the matching position of the door frame and the protective door. The transmission shaft rotates the drive motor through the lock cylinder to rotate the screw rod, and the groove hides the gap at the matching position of the door frame and the protective door to prevent the protective door from clamping approaching objects during movement.
[0011] In a further embodiment, the lock cylinder is slidably matched with the guide rod, a plurality of guide rods are provided and are parallel to the transmission shaft, the guide rods guide the movement direction of the lock cylinder and transmit the lock cylinder under the rotation of the transmission shaft.
[0012] In a further embodiment, the opening of the lock buckle faces the screw rod, and the lock pin is an elastic lock pin. The lock buckle locks the position of the lock pin and causes the screw rod to rotate when the lock cylinder rotates. The elastic lock pin is hidden in the screw rod when subjected to axial force.
[0013] In a further embodiment, the transmission shaft is hollow, the screw rod is clearance-matched with the transmission shaft, and the lock cylinder moves the screw rod into the transmission shaft when the lock cylinder is separated from the screw rod.
[0014] In a further embodiment, the swing tooth is movably connected to the vertical plate and the gear respectively, the fixing pin is fixedly mounted on the gear and slidingly cooperates with the rectangular hole, and the rotation of the gear controls the swing of the swing tooth, thereby controlling the movement of the lock cylinder on the transmission shaft.
[0015] In a further embodiment, the pedal is sleeved on the rack and has an interference fit with the rack, the rack is clearance-fitted with the vertical plate, one end of the slider is threadedly connected to the protective door, and the other end of the slider is engaged with the screw rod, and the pedal controls the movement of the rack to disengage the protective door from the drive of the transmission shaft.
[0016] Beneficial effect: The utility model discloses a radiation protection door lock mechanism, which realizes the connection\separation of the transmission shaft and the screw rod by arranging a lock cylinder between the transmission shaft and the screw rod, wherein the lock cylinder is slidably connected to the guide rod on the transmission shaft, and the lock buckle is snap-connected to the lock pin on the screw rod, thereby realizing the connection\separation of the transmission shaft and the screw rod, and the annular teeth on the lock cylinder are meshed with the swing teeth, and the swing teeth are driven to swing by the rotation of the gear, and then the lock cylinder is moved and the transmission shaft is separated from the screw rod, and when the transmission shaft and the screw rod are separated, the protection door is pushed to move the screw rod into the transmission shaft, and the lock pin is hidden in the screw rod when squeezed, and the pedal drives the rack to move when subjected to external force, and the rack drives the rotation of the gear. At this time, the movement of the lock cylinder is controlled under the failure of the transmission shaft, so that the protection door in the closed state is in a movable state, thereby preventing the protection door from being unable to open normally when affected by the failure. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front view of a door frame of the present utility model.
[0018] Figure 2 It is a top view of the door frame of the present utility model.
[0019] Figure 3 It is a sectional view of a door frame of the present utility model.
[0020] Figure 4 This is a schematic diagram of the pedal distribution of the utility model
[0021] Figure 5 It is a partial enlarged view of the door lock assembly of the utility model.
[0022] Figure 6 It is a partial enlarged view of the slider of the utility model.
[0023] The accompanying drawings are marked as follows: 1. vertical plate; 2. transmission shaft; 3. screw rod; 4. swing tooth; 5. gear; 11. groove; 12. rack; 13. pedal; 21. guide rod; 22. lock cylinder; 31. lock pin; 41. rectangular hole; 51. fixing pin; 100. door frame; 101. slide groove; 110. protective door; 111. slider; 221. ring tooth; 222. lock buckle. DETAILED DESCRIPTION
[0024] The utility model adopts a radiation protection door lock mechanism, by arranging a lock cylinder between the transmission shaft and the screw rod, the lock cylinder is slidably connected to the guide rod on the transmission shaft, and the lock buckle is snap-connected with the lock pin on the screw rod, thereby realizing the connection and separation of the transmission shaft and the screw rod. The scheme is described in detail through specific embodiments below.
[0025] Reference Figure 1-Figure 6 A radiation protection door lock mechanism is shown, comprising:
[0026] A door frame 100, a protective door 110 installed in the door frame 100, a vertical plate 1 installed between the door frames 100, and a door lock assembly installed in the door frame 100 and the vertical plate 1; the protective door 110 is slidably matched with the door frame 100; a groove 11 is provided at the matching position of the door frame 100 and the protective door 110, and the groove 11 hides the gap at the matching position of the door frame 100 and the protective door 110 to prevent the protective door 110 from clamping approaching objects during movement.
[0027] The door lock assembly includes a transmission shaft 2 placed in the door frame 100, and the other end of the transmission shaft 2 is provided with a driving motor. The transmission shaft 2 rotates the screw rod 3 through a lock cylinder 22 under the rotation of the driving motor. The transmission shaft 2 is hollow, and a lock cylinder 22 is installed at one end of the transmission shaft 2. The lock cylinder 22 is sleeved on one end of the transmission shaft 2. The lock cylinder 22 slides with the guide rod 21. The lock cylinder 22 moves the screw rod 3 into the transmission shaft 2 when it is separated from the screw rod 3. A guide rod 21 installed on the transmission shaft 2 is provided at the cooperation position between the lock cylinder 22 and the transmission shaft 2. The guide rod 21 is provided with a plurality of guide rods and is parallel to the transmission shaft 2. The guide rod 21 controls the movement direction of the lock cylinder 22. The lock cylinder 22 is provided with an annular tooth 221 and a lock buckle 222, the opening of the lock buckle 222 faces the screw rod 3, the lock buckle 222 locks the position of the lock pin 31, and the screw rod 3 is rotated under the rotation of the lock cylinder 22, the lock pin 31 is placed at the lock buckle 222 and installed on the screw rod 3, the lock pin 31 is an elastic lock pin 31, and the elastic lock pin 31 is hidden in the screw rod 3 when subjected to axial force, the screw rod 3 is clearance-matched with the transmission shaft 2, and the swing tooth 4 is meshed with the annular tooth 221 and movably matched with the vertical plate 1; the swing tooth 4 is movably connected with the vertical plate 1 and the gear 5 respectively.
[0028] The swing tooth 4 is provided with a rectangular hole 41, and a fixing pin 51 is placed at the rectangular hole 41 and mounted on the gear 5. The fixing pin 51 is fixedly mounted on the gear 5 and slidably cooperates with the rectangular hole 41. The gear 5 is movably mounted on the vertical plate 1. The rack 12 meshing with the gear 5 controls the swing of the swing tooth 4 by rotating the gear 5, thereby controlling the movement of the lock cylinder 22 on the transmission shaft 2. The rack 12 is clearance-matched with the vertical plate 1. The rack 12 is provided with a plurality of holes. A pedal 13 passing through the vertical plate 1; the pedal 13 is sleeved on the rack 12 and has an interference fit with the rack 12, and the pedal 13 controls the movement of the rack 12 to disengage the protective door 110 from the drive of the transmission shaft 2; a slide groove 101 is provided on the door frame 100, and a slider 111 passes through the slide groove 101 and is connected to the protective door 110 and the screw rod 3, one end of the slider 111 is threadedly connected to the protective door 110, and the other end of the slider 111 is meshed with the screw rod 3.
[0029] Working principle description: First, the transmission shaft 2 is driven by the driving motor to rotate the lock cylinder 22 and the screw rod 3, and the slider 111 is controlled to move under the rotation of the screw rod 3, so that the protective door 110 moves along the set direction of the door frame 100;
[0030] When the driving motor or the power supply of the driving motor fails, the transmission shaft 2 is in a stopped state and the protective door 110 cannot be opened;
[0031] At this time, the pedal 13 is pressed or stepped on to move the rack 12, and the gear 5 rotates under the movement of the rack 12. The gear 5 rotates the rod and drives the swing gear 4 to swing through the fixed pin 51. At this time, the swing gear 4 is meshed with the annular gear 221, and the lock cylinder 22 is moved to the transmission shaft 2. The guide rod 21 guides the movement direction of the lock cylinder 22, and the lock pin 31 disengages from the lock buckle 222 to separate the transmission shaft 2 from the screw rod 3. At this time, the protective door 110 is moved to make the screw rod 3 enter the transmission shaft 2. The lock pin 31 is hidden in the screw rod 3 under the contact with the transmission shaft 2, so that the movement of the protective door 110 is controlled without rotating the transmission shaft 2.
[0032] When the protective door 110 needs to be closed, the pedal 13 is released and pressure is applied, the rack 12 is reset, and the lock cylinder 22 moves to the position where it cooperates with the screw rod 3. When the screw rod 3 moves out of the transmission shaft 2, the lock pin 31 is reset without external force and cooperates with the lock buckle 222, so that the transmission shaft 2 is connected to the screw rod 3, and the movement of the protective door 110 is controlled under the operation of the drive motor, thereby ensuring that the protective door 110 is correctly opened or closed under normal operation and fault conditions.
[0033] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.
Claims
1. A radiation protection door lock mechanism, comprising: A door frame, a protective door installed in the door frame, a vertical plate installed between the door frames, and a door lock assembly installed in the door frame and the vertical plate; The door lock assembly comprises a transmission shaft placed in the door frame, a lock cylinder installed at one end of the transmission shaft, a guide rod installed on the transmission shaft is provided at the position where the lock cylinder and the transmission shaft cooperate, an annular tooth and a lock buckle are provided on the lock cylinder, a lock pin placed at the lock buckle and installed on the screw rod, and a swing tooth meshing with the annular tooth and movably cooperating with the vertical plate; A rectangular hole is provided on the swing tooth, a fixing pin is placed at the rectangular hole and installed on the gear, the gear is movably installed on the vertical plate, a rack meshing with the gear, and the rack is provided with a plurality of pedals passing through the vertical plate; a sliding groove is provided on the door frame, and a sliding block passes through the sliding groove and is connected to the protective door and the screw rod.
2. A radiation protection door lock mechanism according to claim 1, characterized in that: The lock cylinder is sleeved on one end of the transmission shaft, and a driving motor is arranged at the other end of the transmission shaft. The protection door is slidably matched with the door frame, and a groove is arranged at the matching position between the door frame and the protection door.
3. A radiation protection door lock mechanism according to claim 1, characterized in that: The lock cylinder is slidably matched with the guide rod, and the guide rod is provided with a plurality of guide rods and is parallel to the transmission shaft.
4. A radiation protection door lock mechanism according to claim 1, characterized in that: The opening of the lock buckle faces the screw rod, and the lock pin is an elastic lock pin.
5. The radiation protection door lock mechanism according to claim 1, characterized in that: The transmission shaft is hollow, and the screw rod is loosely matched with the transmission shaft.
6. A radiation protection door lock mechanism according to claim 1, characterized in that: The swinging teeth are movably connected to the vertical plate and the gear respectively, and the fixing pin is fixedly mounted on the gear and slidably matched with the rectangular hole.
7. A radiation protection door lock mechanism according to claim 1, characterized in that: The pedal is sleeved on the rack and has an interference fit with the rack, the rack has a clearance fit with the vertical plate, one end of the slider is threadedly connected to the protective door, and the other end of the slider is meshed with the screw rod.