A reversible track

Abstract

The utility model provides a kind of overturnable track, including support piece;Sectional track structure, including mutually butting first fixed track, second fixed track and the separable track being set between both;The first end of the separable track is hinged with the first fixed track by rotating connecting structure, and second end is detachably connected with the second fixed track by separable connecting structure;Wherein, the separable connecting structure includes electromagnetic lock being arranged in the side surface of the second fixed track and lock joint matching block being arranged in the end of the separable track.The utility model realizes the dual protection of electric drive precision control and mechanical structure failure safety, effectively solves the problems, such as traditional upward overturning track easy to jam, rely on power, significantly improves the reliability of fire door system in emergency.

Description

Technical Field

[0001] This utility model relates to a reversible track. Background Technology

[0002] In existing circular shuttle material conveying systems, although there are many conventional solutions, they all essentially use fire safety doors to avoid the circular track. Due to the complexity of the track structure's outline, fire doors cannot achieve seamless and complete isolation, thus failing to maximize the fire protection rating of the fire doors. The condition for maximizing the fire protection rating of fire doors is to ensure that the falling part of the fire door can completely fit the load-bearing surface.

[0003] Currently, most fire door track systems adopt an upward-flipping design. This structure has the following drawbacks in practical applications: 1) Fire doors are prone to jamming in emergencies: When a fire or other emergency occurs, the upward flipping of the track may cause the fire door to be obstructed during operation and unable to close smoothly, thereby affecting the fire separation effect and increasing safety hazards; 2) Reliance on electricity, insufficient reliability during fires: Existing track systems usually rely on electrical drives. If a fire causes a power outage or electrical system failure, the track flipping function will fail, the fire door will not be able to operate normally, and it will be difficult to meet the needs of fire emergency response. Utility Model Content

[0004] This invention provides a reversible track, which can effectively solve the above problems.

[0005] This utility model is implemented as follows: A reversible track, including Support components; The segmented track structure includes a first fixed track, a second fixed track, and a separable track disposed between them; The first end of the separable track is hinged to the first fixed track via a rotary connection structure, and the second end is detachably connected to the second fixed track via a separable connection structure. The detachable connection structure includes an electromagnetic lock disposed on the side of the second fixed track and a locking matching block disposed at the end of the detachable track. A driving mechanism is used to drive the separable track to rotate around the rotary connection structure, so as to realize the second end of the separable track being separated from or engaged with the second fixed track. An elastic reset mechanism is provided at the rotary connection structure to provide an elastic force for resetting the separable track.

[0006] The beneficial effects of this utility model are: (1) This utility model, through its innovative segmented track design and electromechanical linkage structure, ensures the stable operation of the track system by precisely controlling the connection between the separable track and the fixed track under normal conditions through the drive mechanism. When a fire or other emergency occurs and the power is cut off, the separable connection structure is automatically released, and the separable track quickly flips downward and separates under the action of gravity, providing a reliable falling channel for the fire door. At the same time, the elastic reset mechanism stores the energy required for reset. During the post-disaster recovery, the drive mechanism, with the assistance of the elastic reset mechanism, drives the separable track to smoothly reset and relock. The entire process does not require manual intervention, realizing the dual guarantee of electric drive precision control and mechanical structure failure safety. It effectively solves the problems of easy jamming and reliance on electricity in traditional upward flipping tracks, and significantly improves the reliability of the fire door system in emergency situations. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0008] Figure 1 This is the front view of this utility model.

[0009] Figure 2 This is a schematic diagram showing the connection between the second fixed track and the separable track of this utility model.

[0010] Figure 3 This is a schematic diagram showing the separation of the servo motor and the housing of this utility model.

[0011] Figure 4 This is a utility model Figure 1 A partial schematic diagram of A in the diagram.

[0012] Figure 5 This is a utility model Figure 3 A partial schematic diagram of B in the diagram.

[0013] Explanation of icon numbers: 10. Support components; 20. First fixed track; 200. First rotating shaft; 30. Second fixed track; 300. First interface; 302. Electromagnetic lock; 40. Separable track; 400. Second interface; 402. Locking matching block; 404. Second rotating shaft; 50. Reinforcing bar; 60. Servo motor; 600. Connecting gear; 70. Housing; 700. Upper convex plate; 702. Transmission gear; 80. Gear shaft; 800. Helical gear with convex opening; 802. Connecting shaft; 804. Spring. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0015] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0016] Reference Figure 1-5 A reversible track, including Support component 10.

[0017] The segmented track structure includes a first fixed track 20 and a second fixed track 30 that are connected to each other, and a separable track 40 disposed between the two.

[0018] Specifically, such as Figure 1 As shown, the reversible track of this utility model mainly consists of a support member 10 and a segmented track structure. The support member 10 is made of channel steel and is fixed to the building structure by expansion bolts, providing a stable support foundation for the entire track system. The segmented track structure includes a first fixed track 20, a second fixed track 30, and a separable track 40 set between the two. The three together form a complete track running path. At the same time, in order to improve the structural strength, a reinforcing rod 50 is set between the two separable tracks 40.

[0019] The reinforcing rod 50 is made of 20mm diameter Q235 round steel, and its two ends are fastened to the side of the track with M10 bolts. This design significantly improves the overall rigidity of the track system, ensuring that the running accuracy will not be affected by deformation under stress during long-term use.

[0020] The first end of the separable track 40 is hinged to the first fixed track 20 via a rotary connection structure, and the second end is detachably connected to the second fixed track 30 via a separable connection structure. The rotary connection structure includes a first rotating shaft 200 disposed at the end of the first fixed track 20 and a second rotating shaft 404 disposed at the end of the separable track 40 and cooperating therewith. The separable connection structure includes an electromagnetic lock 302 disposed on the side of the second fixed track 30 and a locking matching block 402 disposed at the end of the separable track 40.

[0021] Specifically, the specific implementation of the rotary connection structure is as follows: Figure 2 As shown, a first rotating shaft 200 is machined at the end of the first fixed track 20. The rotating shaft is made of 40Cr alloy steel and is hardened to a hardness of HRC50-55. Correspondingly, a second rotating shaft 404 is provided at the corresponding end of the separable track 40. The two are rotatably connected by a precision bearing. The connecting shaft 802 runs through the entire rotating connection structure, and its diameter tolerance is controlled at h6 level to ensure flexible rotation without gaps.

[0022] A drive mechanism is used to drive the separable track 40 to rotate around the rotary connection structure, so as to realize the second end of the separable track 40 being separated from or engaged with the second fixed track 30. The drive mechanism includes a servo motor 60 and a housing 70. A speed-changing gear 702 and a gear shaft 80 are provided inside the housing 70. The servo motor 60 meshes with the speed-changing gear 702 through a connecting gear 600. The speed-changing gear 702 drives the gear shaft 80 to rotate. A convex helical gear 800 is provided on the gear shaft 80. The convex helical gear 800 is connected to the rotary connection structure through the connecting shaft 802.

[0023] Specifically, the working process of the drive mechanism is as follows: When the track needs to be separated, the control system first sends a command to the servo motor 60. After the servo motor 60 (preferably a 400W AC servo motor) starts, the connecting gear 600 (module 2, number of teeth 20) on its output shaft meshes with the speed-changing gear 702 (module 2, number of teeth 60), achieving a 1:3 reduction ratio. The speed-changing gear 702 drives the gear shaft 80 to rotate. The helical gear 800 (helical tooth angle 20°) machined on the gear shaft 80, through its engagement with the inclined surface of the connecting shaft 802, converts the rotational motion into linear thrust. Under the action of the thrust, the connecting shaft 802 drives the separable track 40 to rotate downward around the rotation axis. At the same time, the electromagnetic lock 302 (selected as DC24V power-off release type) is energized and releases the locking matching block 402, ultimately realizing the downward rotation of the separable track 40 under the action of the drive mechanism. The entire action process can be completed within 1.5 seconds, with a rapid response.

[0024] The first end of the second fixed track 30 has a first interface 300, and the second end of the separable track 40 has a second interface 400 that cooperates with the first interface 300.

[0025] Specifically, refer to Figure 2 As shown, the first interface 300 and the second interface 400 adopt a unique mating design: the mating surface is machined into a 15° bevel. This design facilitates guiding the mating and effectively prevents foreign objects from getting stuck. At the same time, the contact surface is bonded with a 3mm thick wear-resistant rubber pad (Shore hardness 70A), which not only reduces collision noise but also compensates for machining and assembly errors. In order to ensure the mating accuracy, the machining tolerance of all interface components is controlled within ±0.5mm.

[0026] Furthermore, a guide groove (not shown in the figure) is provided at the bottom of the second interface 400, which cooperates with the guide boss (not shown in the figure) on the first interface 300 to achieve precise positioning. Actual tests show that this design can ensure that the positional error of repeated track docking is less than 0.3mm, fully meeting the sealing requirements of fire doors.

[0027] An elastic reset mechanism is provided at the rotary connection structure to provide an elastic force for resetting the separable track 40. The elastic reset mechanism includes a spring 804 sleeved on the connecting shaft 802. One end of the spring 804 abuts against the convex helical gear 800, and the other end is connected to the upper convex plate 700 fixed on the housing 70.

[0028] Specifically, the elastic reset mechanism of this utility model is as follows: Figure 3 and Figure 4 As shown, spring 804 is made of SUS304 stainless steel with a wire diameter of 3mm and a free length of 50mm. It undergoes stress relief treatment to ensure no plastic deformation occurs during long-term use. The upper convex plate 700 is made of 8mm thick Q235 steel plate and is reliably connected to the housing 70 via continuous welds with a weld height of not less than 4mm. The pre-compression of spring 804 is precisely calculated and set to 10mm, providing an initial restoring force of approximately 150N. When the separable track 40 flips downwards, spring 804 is further compressed, with the maximum compression controlled within 30mm, providing a restoring force of approximately 450N to ensure reliable track reset. It should be noted that during installation and commissioning, the pre-compression can be precisely adjusted by adjusting the installation height of the upper convex plate 700 to ensure performance under different operating conditions.

[0029] In summary, when a fire causes a power outage, the system automatically enters the emergency working mode: the electromagnetic lock 302 immediately loses power and releases (response time <100ms), releasing the constraint on the locking matching block 402. The separable track 40 automatically flips downward under the action of gravity torque, with a flip angle of up to 75°, ensuring complete separation. During this process, the spring 804 is stretched to store energy, preparing for post-disaster reset. The entire separation process does not require external power and is achieved entirely by mechanical structure, with extremely high reliability.

[0030] To verify the reliability of this mode, we conducted 100 simulated power outage tests with a 100% success rate. Even with tilted installation (tilt angle ≤ 5°), the track can still reliably separate under its own weight. Furthermore, during system reset, a reset command is sent via the control panel, and the servo motor 60 drives the track to smoothly reset. The energy stored in the spring 804 assists in completing the final 10° reset action, reducing the motor load. (See the diagram below)

[0031] The working principle of this case: Under normal conditions, the servo motor 60 drives the transmission gear 702 through the connecting gear 600, which in turn rotates the gear shaft 80 and the convex helical gear 800. This keeps the separable track 40 horizontally aligned with the first rotating shaft 200 and the second rotating shaft 404 through the rotating connection structure. At this time, the electromagnetic lock 302 locks the locking matching block 402 to ensure a stable connection of the track. In case of an emergency such as a fire or power outage, the electromagnetic lock 302 immediately de-energizes and releases. Under the action of gravity, the separable track 40 rotates downwards by up to 75° around the rotating connection structure. At the same time, the spring 804 is stretched and stores energy, achieving rapid and automatic separation of the track. During post-disaster reset, the servo motor 60 drives the gear system to reverse. With the assistance of the energy stored in the spring 804, the separable track 40 is smoothly reset to the horizontal alignment position and relocked by the electromagnetic lock 302. The entire process requires no manual intervention, achieving dual protection of "precise control by electric drive" and "safety in case of mechanical failure".

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reversible track, characterized in that, include Support component (10); The segmented track structure includes a first fixed track (20) and a second fixed track (30) that are connected to each other, and a separable track (40) disposed between the two; The first end of the separable track (40) is hinged to the first fixed track (20) through a rotary connection structure, and the second end is detachably connected to the second fixed track (30) through a separable connection structure. The separable connection structure includes an electromagnetic lock (302) disposed on the side of the second fixed track (30) and a locking matching block (402) disposed at the end of the separable track (40); A driving mechanism is used to drive the separable track (40) to rotate around the rotary connection structure, so as to realize the second end of the separable track (40) being separated from or engaged with the second fixed track (30); An elastic reset mechanism is provided at the rotary connection structure to provide an elastic force for resetting the separable track (40).

2. The reversible track according to claim 1, characterized in that, The rotary connection structure includes a first rotary shaft (200) disposed at the end of the first fixed track (20) and a second rotary shaft (404) disposed at the end of the separable track (40) and cooperating therewith.

3. The reversible track according to claim 1, characterized in that, The drive mechanism includes a servo motor (60) and a housing (70). The housing (70) is provided with a speed-changing gear (702) and a gear shaft (80). The servo motor (60) meshes with the speed-changing gear (702) through a connecting gear (600), and the speed-changing gear (702) drives the gear shaft (80) to rotate.

4. A reversible track according to claim 3, characterized in that, The gear shaft (80) is provided with a convex helical gear (800), and the convex helical gear (800) is connected to the rotary connection structure through a connecting shaft (802).

5. A reversible track according to claim 4, characterized in that, The elastic reset mechanism includes a spring (804) sleeved on the connecting shaft (802), one end of the spring (804) abutting against the convex helical gear (800), and the other end connected to the upper convex plate (700) fixed on the housing (70).

6. A reversible track according to claim 1, characterized in that, The first end of the second fixed track (30) is formed with a first interface (300), and the second end of the separable track (40) is formed with a second interface (400) that cooperates with the first interface (300).

7. A reversible track according to claim 1, characterized in that, A reinforcing rod (50) is provided between the two separable tracks (40).

8. A reversible track according to claim 1, characterized in that, The separable track (40) achieves a downward flipping motion under the action of the drive mechanism.

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