Opposite rail locking device suitable for rail system

Abstract

The utility model relates to a rail aligning and locking device suitable for a rail system. A driving mechanism is arranged on a butting rail, and a driven mechanism is arranged at the end part of a movable rail; the driving mechanism comprises a driving plate, an inserting rod linearly sliding along the driving plate, and a positioning shaft and a locking shaft which are arranged at the front end of the inserting rod; the driven mechanism comprises a driven plate, a mounting seat, a positioning block which elastically and linearly slides along the mounting seat and two clamping claws which are symmetrically connected above the mounting seat in a rotating manner, the mounting seat is arranged on the driven plate, a guide groove is formed above the mounting seat, and a V-shaped groove is formed in the front end of the positioning block; the positioning shaft moves forwards to abut against the interior of the V-shaped groove, so that the movable rail and the butt-joint rail are aligned up and down, the locking shaft moves forwards to the interior of the guide groove and is arranged between the two clamping claws, so that the movable rail and the butt-joint rail are aligned left and right, and the two clamping claws are matched to clamp the locking shaft. According to the utility model, horizontal alignment and vertical alignment of two different rails can be realized, stable locking between the rails can also be realized, and the reliability and smoothness of rail replacement are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a rail locking device suitable for track systems. Background Technology

[0002] The overhead rail transfer system is a medical rehabilitation device that can be used for the daily transfer, rehabilitation training, and nursing needs of paralyzed patients, critically ill patients, and long-term bedridden disabled individuals. The overhead rail transfer system mainly consists of a track system, a lifting main unit, hoists and slings, and control and auxiliary equipment. The lifting main unit can move along the track system, and all the above components work together to achieve safe patient transfer and rehabilitation training.

[0003] The track system includes H-shaped tracks, straight tracks, or curved tracks, and different types of tracks can be combined to form various ceiling track systems. This allows the track system to cover multiple areas, increasing the range of motion of the lifting unit and enabling patients to move to more locations. An H-shaped track consists of two parallel tracks fixed to the roof; these two parallel and fixed tracks are called fixed tracks. A third track slides between the two fixed tracks; this sliding track is called the moving track. The moving track is perpendicular to the two fixed tracks and slides below them.

[0004] In practical applications, lifting platforms can travel between different tracks, requiring track-changing operations. For example, when a lifting platform on an H-shaped track needs to move onto a straight track, one section of the straight track is disconnected to make way for the moving track; the moving track is manually pulled to align with the straight track, and then the lifting platform actively moves onto the straight track. Figure 1 As shown. During this process, it is necessary to ensure the reliability and stability of the connection between the straight rail and the moving rail in order to ensure that the lifting host can change rails smoothly.

[0005] In existing technologies, the connection between two tracks is mostly achieved through pins and holes. For example, the H-type ceiling track system device disclosed in patent publication number CN216004169U connects through pins and locking holes, and is locked by a fixing buckle set above the pin. This ensures that the connection between the pin and the buckle and the operation of the fixing baffle are sequential, thus greatly increasing the reliability of the H-track system connection through multiple safeguards. However, the reliability of this connection method still needs to be improved. Summary of the Invention

[0006] To address the issue of low reliability in conventional pin-and-socket docking structures, this invention provides a rail-locking device suitable for rail systems. This device enables vertical and horizontal alignment of two rails, and simultaneously locks the two rails together, improving the reliability and stability of docking different types of rails.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A rail locking device suitable for track systems is used to align and lock a moving rail and a docking rail. The docking rail is equipped with an active mechanism, and the end of the moving rail is equipped with a passive mechanism. After the moving rail moves and aligns with the docking rail, the active mechanism extends and inserts into the passive mechanism, so that the moving rail and the docking rail are reliably connected.

[0009] The active mechanism includes an active plate, a rod that slides linearly along the active plate, and a positioning shaft and a locking shaft arranged sequentially at the front end of the rod. The axes of the positioning shaft and the locking shaft are perpendicular to each other, and the rod can easily drive the positioning shaft and the locking shaft to move together.

[0010] The passive mechanism includes a passive plate, a mounting base, a positioning block that slides elastically along the mounting base, and two clamping claws that are symmetrically connected above the mounting base. The mounting base is fixedly mounted on the passive plate. A flared guide groove is provided above the mounting base. The guide groove facilitates the guidance of the locking shaft and ensures that the inner end of the guide groove is concentric with the locking shaft. A V-shaped groove is provided at the front end of the positioning block.

[0011] The positioning shaft moves forward and abuts against the V-groove, so that the moving rail and the docking rail are vertically aligned. The locking shaft moves forward into the guide groove and is placed between the two clamping claws, so that the moving rail and the docking rail are horizontally aligned. The two clamping claws cooperate to clamp the locking shaft.

[0012] Furthermore, the docking track is the end of a straight rail and a circular rail, and the docking track is arranged parallel to the moving rail of the H-shaped track, with the docking track and the moving rail at the same height.

[0013] Furthermore, the active plate is a horizontally arranged long plate body. The active plate is fixedly connected to the docking track. An electric push rod for driving the linear movement of the insertion rod is provided on one rear side of the active plate. The electric push rod has a telescopic function. The rear end of the insertion rod is connected to the electric push rod. The insertion rod is slidably connected to the active plate through a slide rail slider structure. The direction of movement of the insertion rod is consistent with the length direction of the docking track.

[0014] Furthermore, the positioning shaft is arranged at the front end of the insertion rod, the locking shaft is close to the front end of the insertion rod, the axis of the locking shaft is perpendicular to the active plate, and the locking shaft and the positioning shaft are respectively arranged on two planes at different heights.

[0015] Furthermore, the passive plate is a horizontally arranged short plate, and the passive plate is connected and fixed to the end of the moving rail; the mounting base is a box that is closed on all sides and open at the front end. The mounting base corresponds to the insertion rod and is arranged in a straight line. The open end of the mounting base faces the insertion rod, and the clamping claw and positioning block are arranged on the upper and lower parts of the mounting base, respectively.

[0016] Furthermore, a spring rod is provided at the rear end of the positioning block. The spring rod is a T-shaped round rod structure, with one end of the spring rod passing through the mounting base. A compression spring is sleeved on the spring rod located inside the mounting base. The two sides of the V-shaped groove are tangent to the positioning shaft.

[0017] Furthermore, the inner end face of the guide groove is an arc surface, the guide groove and the mounting base opening are arranged vertically, the guide groove faces the insertion rod, and the insertion rod drives the locking shaft to be inserted into the guide groove and arranged concentrically with the guide groove.

[0018] Furthermore, the clamping claws are symmetrically arranged on the mounting seats on both sides of the guide groove. The clamping claws are horizontally arranged plates, and the clamping claws and positioning blocks are arranged vertically at intervals.

[0019] The clamping claws are provided with clamping grooves, and the clamping grooves on the two clamping claws are arranged in the shape of "()". The clamping grooves cooperate to clamp the locking shaft. Each clamping groove has an inner protrusion at the inner end and an outer protrusion at the outer end, which facilitates the restriction of the locking shaft.

[0020] Furthermore, the clamping claw is provided with an arc-shaped limiting groove, and a limiting bolt is provided above the mounting base. The limiting bolt extends vertically upward through the limiting groove, which can ensure that the rotation of the clamping claw is within a certain range.

[0021] A tension spring is provided between each of the clamping claws and the mounting base. The tension spring ensures tension and is also the power source for the clamping claws to rotate, so that the outer protrusions on both sides move away from each other and the inner protrusions move closer to each other. The locking shaft moves forward and abuts against the inner protrusion, so that the clamping claw rotates, causing the outer protrusions to move closer to each other and abut against the locking shaft.

[0022] Furthermore, an active stop block is connected to the active plate. The lower end of the active stop block passes through the active plate and extends into the docking track to block the movement of the lifting host. A push plate is also provided at the rear end of the insert rod to push the active stop block to deflect out of the docking track. The insert rod moves forward, causing the push plate to push the active stop block to deflect out of the docking track. The main function of the active stop block is to enable the passage and obstruction of the lifting host. The active stop block swings forward and backward by its own weight and the push of the insert rod.

[0023] A passive stop block is connected to the passive plate. The passive stop block has the same function as the active stop block. The lower end of the passive stop block passes through the passive plate and extends into the moving rail to block the movement of the lifting host. A push rod is provided on one side of the positioning block. The push rod extends out of the mounting seat. The positioning block pushes the passive stop block to deflect out of the moving rail through the push rod.

[0024] The beneficial effects of this utility model through the above technical solution are:

[0025] The active and passive mechanisms of this invention have a vertical alignment function, which is achieved through the interaction between the positioning shaft and the V-groove. When the insertion rod drives the positioning shaft forward to abut against the positioning block, the positioning shaft is tangent to both sides of the V-groove, achieving automatic centering and positioning, ensuring that the moving rail and the docking rail are on the same horizontal plane. When the positioning shaft presses against the positioning block, the compression spring is compressed, and the elastic force of the compression spring tightly presses the two parts together, ensuring stable vertical alignment between the rails and preventing movement.

[0026] The active and passive mechanisms of this invention have a locking function, which is achieved through the cooperation of the locking shaft, the guide groove, and two freely rotating clamping claws. When the insert rod drives the locking shaft forward, the guide groove guides the locking shaft into it, and the cylindrical surface of the locking shaft aligns with the arc surface at the inner end of the guide groove, ensuring concentric alignment and thus guaranteeing the left-right alignment of the moving rail and the docking rail. During the alignment process, the locking shaft drives the clamping claws to rotate, and the two clamping claws cooperate to encircle the locking shaft, thereby locking and securing it, ensuring a reliable and stable connection between the moving rail and the docking rail.

[0027] When changing tracks, the lifting host of this utility model drives the related push plate and push rod to move horizontally through the extension and retraction of the insert rod. The push rod realizes the rotation, lifting and lowering of the passive stop, and the push plate realizes the rotation, lifting and lowering of the active stop. When the active and passive stops are raised, the lifting host can move freely between the tracks; when the active and passive stops are lowered, the lifting host is blocked from moving forward when it slides to the break point of the track, preventing the host from running off the track and causing an accident. Attached Figure Description

[0028] Figure 1 This is a top view of the existing H-shaped track and straight rail arrangement. In the figure, path A is the movement of the lifting host to align with the straight rail, and path B is the movement of the lifting host onto the straight rail.

[0029] Figure 2 This utility model is an isometric drawing of the H-shaped track and docking track arrangement of the track locking device applicable to the track system.

[0030] Figure 3 This is a front view of the H-shaped rail and docking rail installation status of the rail locking device applicable to the track system of this utility model.

[0031] Figure 4 This is an isometric drawing of the active mechanism of the rail locking device applicable to track systems according to this utility model.

[0032] Figure 5 This is a top view of the active mechanism of the rail locking device applicable to track systems according to this utility model.

[0033] Figure 6This is an isometric drawing of the passive mechanism of the rail locking device applicable to track systems according to this utility model.

[0034] Figure 7 This is an isometric view of the arrangement of the positioning blocks and clamping claws of the rail locking device applicable to the track system.

[0035] Figure 8 This is an isometric drawing of the spring installation of the rail locking device applicable to the track system of this utility model.

[0036] Figure 9 This is a top view of the moving rail movement state of the rail locking device applicable to the track system of this utility model. The arrow in the figure points to the direction of moving rail movement.

[0037] Figure 10 This is a cross-sectional view of the alignment state of the moving rail and the docking rail of the rail locking device applicable to the track system of this utility model.

[0038] Figure 11 This is the main view of the positioning shaft abutting the positioning block of the rail locking device applicable to the track system of this utility model.

[0039] Figure 12 This is a top view of the positioning shaft abutting the positioning block of the rail locking device applicable to the track system of this utility model.

[0040] Figure 13 This is a top view of the locking shaft of the rail locking device applicable to the track system, in the state of the clamping claw. In the figure, a shows the locking shaft abutting the inner protrusion, and b shows the clamping groove surrounding the locking shaft.

[0041] Figure 14 This is a front view of the lifting host in the rail-changing state of the rail-locking device of the rail system applicable to the track system of this utility model.

[0042] Figure 15 This is a top view of the lifting host of the rail-changing device for the rail locking device of the present invention applicable to the track system.

[0043] The attached diagram is labeled as follows: 1 docking rail, 2 lifting host, 301 fixed rail, 302 moving rail, 4 active mechanism, 5 passive mechanism, 6 active plate, 7 insert rod, 8 active stop block, 9 electric push rod, 10 positioning shaft, 11 locking shaft, 12 active rotating shaft, 13 hole one, 14 push plate, 18 passive plate, 19 positioning block, 191 V-groove, 20 clamping claw, 201 clamping groove, 21 passive stop block, 22 mounting base, 23 spring rod, 24 compression spring, 25 inner protrusion, 26 outer protrusion, 27 tension spring, 28 limit groove, 29 limit bolt, 30 guide groove, 31 push rod. Detailed Implementation

[0044] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0045] like Figures 2-15 As shown, the rail locking device is suitable for track systems and is used to align and lock the moving rail 302 with the docking rail 1. It can enable the lifting host 2 on the H-shaped rail to move onto the docking rail 1, thereby facilitating the rail changing operation of the lifting host 2.

[0046] The H-shaped track consists of a moving rail 302 and a fixed rail 301, with a lifting host 2 on the moving rail 302. The docking rail 1 is arranged parallel to the moving rail 302 of the H-shaped track, and the docking rail 1 and the moving rail 302 are at the same height.

[0047] Here, the ends of the straight rail and the circular rail are defined as docking rail 1. The docking rail 1 is fixed to the roof by a suspension rod, ensuring that it is level with the roof and does not wobble. The function of the docking rail 1 is to dock and lock with the moving rail 302, allowing the lifting host 2 to move freely. The lifting host 2 on the moving rail 302 moves to the straight rail or the circular rail via the docking rail 1 to realize the rail changing operation.

[0048] To ensure reliable and stable connection between the moving rail 302 and the docking rail 1, and to improve the smoothness of rail changing for the lifting host 2, an active mechanism 4 is installed on the docking rail 1, while a passive mechanism 5 is installed at the end of the moving rail 302. After the moving rail 302 moves and aligns with the docking rail 1, the active mechanism 4 extends and inserts into the passive mechanism 5. Through the cooperation of the active mechanism 4 and the passive mechanism 5, the moving rail 302 and the docking rail 1 are reliably connected, and then the lifting host 2 can smoothly move from the moving rail 302 to the docking rail 1, realizing the moving rail changing.

[0049] In this embodiment, the active mechanism 4 includes an active plate 6, a rod 7 that slides linearly along the active plate 6, and a positioning shaft 10 and a locking shaft 11 that are sequentially arranged at the front end of the rod 7.

[0050] The active plate 6 is a horizontally arranged long plate body. The active plate 6 is connected and fixed to the docking rail 1. An electric actuator 9 is set at the rear of one side of the active plate 6 to drive the insertion rod 7 to move linearly. The rear end of the insertion rod 7 is connected to the electric actuator 9, which can drive the insertion rod 7 to move linearly back and forth. In order to ensure the linearity and smoothness of the movement, the insertion rod 7 is slidably connected to the active plate 6 through a slide rail slider structure. The movement direction of the insertion rod 7 is consistent with the length direction of the docking rail 1.

[0051] The insertion rod 7 is a long strip. When the insertion rod 7 moves, it drives the positioning shaft 10 and the locking shaft 11 to move together. The positioning shaft 10 and the locking shaft 11 are both cylinders. The positioning shaft 10 is located at the front end of the insertion rod 7, and the locking shaft 11 is located near the front end of the insertion rod 7. Thus, the positioning shaft 10 and the locking shaft 11 are arranged sequentially from front to back.

[0052] The locking shaft 11 is perpendicular to the active plate 6, and the positioning shaft 10 is perpendicular to the locking shaft 11. Therefore, the positioning shaft 10 is horizontally arranged. The locking shaft 11 and the positioning shaft 10 are arranged on two planes at different heights.

[0053] In this embodiment, the passive mechanism 5 includes a passive plate 18, a mounting base 22, a positioning block 19 that slides elastically along the mounting base 22, and two clamping claws 20 symmetrically connected above the mounting base 22. The passive plate 18 is a horizontally arranged short plate, and the passive plate 18 is fixedly connected to the end of the moving rail 302. The active plate 6 has the same width as the passive plate 18.

[0054] A mounting base 22 is fixedly installed on the passive plate 18. The mounting base 22 is a box that is closed on all sides and open at the front end. The mounting base 22 corresponds to the insertion rod 7 and is arranged in a straight line. The open end of the mounting base 22 faces the insertion rod 7. The clamping claws 20 and positioning blocks 19 are arranged on the upper and lower parts of the mounting base 22, respectively. The clamping claws 20 and positioning blocks 19 are arranged at intervals.

[0055] A flared guide groove 30 is provided above the mounting base 22. The inner end face of the guide groove 30 is an arc surface. The guide groove 30 and the opening of the mounting base 22 are arranged vertically, with the guide groove 30 facing the insertion rod 7. When the insertion rod 7 moves forward, it drives the locking shaft 11 to be inserted into the guide groove 30. At this time, the locking shaft 11 and the guide groove 30 are concentrically arranged, so that the moving rail 302 is aligned left and right with the docking rail 1. Through the guidance of the guide groove 30, it is ensured that the locking shaft 11 accurately enters between the two clamping grooves 201.

[0056] During installation, the positioning block 19 slides linearly within the mounting base 22, moving between the front and rear ends of the mounting base 22. A spring rod 23, a T-shaped round rod, is located at the rear end of the positioning block 19. One end of the spring rod 23 extends out of the mounting base 22 and slides against it. A compression spring 24 is fitted onto the spring rod 23 within the mounting base 22. As the compression spring 24 elongates, it moves the positioning block 19 forward to the opening position of the mounting base 22, at which point most of the spring rod 23 is positioned within the mounting base 22.

[0057] The positioning block 19 has a V-groove 191 at its front end. When the positioning shaft 10 moves forward and abuts against the V-groove 191, the two sides of the V-groove 191 are tangent to the positioning shaft 10, which drives the positioning block 19 to move backward in a straight line, causing the compression spring 24 to be compressed. The spring rod 23 also gradually extends out of the mounting seat 22, so that the moving rail 302 is aligned vertically with the docking rail 1.

[0058] During installation, the clamping claws 20 are symmetrically arranged on the mounting seats 22 on both sides of the guide groove 30. The clamping claws 20 are horizontally arranged plates. The two clamping claws 20 cooperate to clamp the locking shaft 11, thereby locking the forward-extending locking shaft 11 and preventing the locking shaft 11 from disengaging from the passive mechanism 5.

[0059] Specifically, the clamping claw 20 is provided with a clamping groove 201. The clamping grooves 201 on the two clamping claws 20 are arranged in the shape of "()". The outline of the clamping groove 201 is irregular. Each clamping groove 201 has an inner protrusion 25 at its inner end and an outer protrusion 26 at its outer end. The outer protrusion 26 is located at the opening end of the mounting base 22.

[0060] To restrict the rotation of the gripping claw 20, an arc-shaped limiting groove 28 is provided on the gripping claw 20, and a limiting bolt 29 is provided above the mounting base 22, extending vertically upward through the limiting groove 28. Therefore, when the limiting bolt 29 abuts against the end of the limiting groove 28, the gripping claw 20 cannot rotate. To enable the rotation of the gripping claw 20, a tension spring 27 is provided between each gripping claw 20 and the mounting base 22. The tension spring 27 causes the gripping claw 20 to rotate horizontally, and also causes the outer protrusions 26 on both sides to move away from each other and the inner protrusions 25 to move closer to each other. At this time, the two gripping grooves 201 are in the open state.

[0061] When the locking shaft 11 moves forward into the guide groove 30, the guide groove 30 guides the locking shaft 11, allowing it to accurately enter between the two clamping grooves 201, ensuring that the locking shaft 11 can be effectively locked by the clamping claws 20. Specifically, the locking shaft 11 moves forward and presses against the inner protrusion 25, causing the clamping claws 20 to rotate and drive the outer protrusions 26 to move closer to each other and press against the locking shaft 11. At this time, the locking shaft 11 is placed between the two clamping claws 20, and then the clamping grooves 201 cooperate to clamp the locking shaft 11, preventing the locking shaft 11 from falling out of the clamping claws 20, and ensuring that the moving rail 302 and the docking rail 1 are securely connected.

[0062] To optimize the product structure, an active stop block 8 is connected to the active plate 6. The active stop block 8 controls whether the lifting host 2 can move smoothly on the docking rail 1. The active stop block 8 is a long strip plate structure with V-shaped protrusions at both ends. During installation, the active plate 6 is connected to an active rotating shaft 12 via two bearing seats. The active rotating shaft 12 can only rotate circumferentially and cannot move axially. The active stop block 8 is arranged at one end of the active rotating shaft 12, so the active rotating shaft 12 and the active stop block 8 rotate together.

[0063] Under its own weight, the lower end of the active stop block 8 passes through the active plate 6 and extends into the docking rail 1 to block the movement of the lifting host 2, while the upper end of the active stop block 8 protrudes from the upper surface of the active plate 6. Specifically, a hole 13 is provided on the active plate 6, which passes downward through the docking rail 1, allowing the lower end of the active stop block 8 to rotate into and out of the docking rail 1. In the initial state, due to the influence of the active stop block 8's own weight, the lower end of the active stop block 8 extends inclinedly into the docking rail 1, and the active stop block 8 rests against one edge of the hole 13.

[0064] To enable the rotation of the active stop 8, a push plate 14 is provided at the rear end of the insert rod 7 to push the active stop 8 out of the docking track 1. The insert rod 7 drives the push plate 14 to move together. The push plate 14 moves forward in a straight line and pushes the active stop 8, causing the lower end of the active stop 8 to deflect out of the docking track 1. At this time, the active stop 8 no longer blocks the track-changing movement path of the lifting host 2.

[0065] Meanwhile, a passive stop block 21 is connected to the passive plate 18. The passive stop block 21 has the same function and similar structure as the active stop block 8. The installation structure of the passive stop block 21 is the same as that of the active stop block 8, and will not be described again here. The lower end of the passive stop block 21 passes through the passive plate 18 and extends into the moving rail 302 to block the movement of the lifting host 2. By rotating the passive stop block 21, the movement of the lifting host 2 within the moving rail 302 can be controlled.

[0066] In order to achieve the rotation of the passive stop 21, a push rod 31 is provided on one side of the positioning block 19. The push rod 31 extends out of the mounting base 22. The positioning block 19 pushes the passive stop 21 to deflect out of the moving rail 302 through the push rod 31. At this time, the passive stop 21 no longer blocks the rail changing movement path of the lifting host 2.

[0067] The principle of this invention is as follows: In a free state, the moving rail 302 can slide between the two fixed rails 301, while the lifting host 2 can move back and forth on the moving rail 302. At this time, the lifting host 2 can move freely in all directions within the area enclosed by the two fixed rails 301. When the lifting host 2 needs to change rails, the moving rail 302 is manually pulled to the required alignment position, causing the moving rail 302 to align with the two docking rails 1. Figure 9 and Figure 10 As shown.

[0068] The moving rail 302 is manually aligned with the docking rail 1. Then, the electric push rod 9 extends, driving the insertion rod 7, positioning shaft 10, locking shaft 11, and push plate 14 forward together, approaching the position of the passive mechanism 5. The positioning shaft 10 first contacts the positioning block 19. The cylindrical surface of the positioning shaft 10 is tangentially contacted with both sides of the V-groove 191 on the positioning block 19, causing the compression spring 24 to compress and deform. The elastic potential energy of the compression spring 24 gradually increases, such as... Figure 11 and Figure 12As shown.

[0069] After the electric actuator 9 extends into position, the positioning shaft 10 presses against the positioning block 19. At this time, the compression spring 24 is compressed to its maximum deformation, thereby aligning the upper and lower horizontal surfaces of the moving rail 302 with the docking rail 1. The elastic force of the compression spring 24 ensures that the positioning shaft 10 and the positioning block 19 are tightly abutted, ensuring that the two different rails are aligned vertically and do not move, which means that the moving rail 302 and the docking rail 1 are on the same horizontal plane.

[0070] During the forward extension of the electric actuator 9, in addition to the positioning shaft 10 moving forward and pressing against the positioning block 19, the following actions also occur simultaneously: A. The locking shaft 11 gradually approaches the guide groove 30 and, guided by the guide groove 30, accurately enters the guide groove 30, ensuring that the locking shaft 11 and the guide groove 30 are concentric. At the same time, since the two outer protrusions 26 are far apart and do not affect the locking shaft 11 entering the clamping groove 201, the locking shaft 11 moves forward and touches the inner protrusion 25, causing the clamping claw 20 to rotate at a certain angle, thereby stretching the tension spring 27. Moreover, the two outer protrusions 26 gradually approach and press against the edge of the locking shaft 11, forming a circling action on the locking shaft 11 until the electric actuator 9 extends to its position and uses the clamping grooves 201 on both sides to circling the locking shaft 11. Figure 13 As shown.

[0071] As long as the electric actuator 9 remains extended, the clamping groove 201 can continuously hold the locking shaft 11 without loosening. At this time, the tension spring 27 is deformed and maintains a certain tension. Since the cylindrical surface of the locking shaft 11 and the arc surface of the guide groove 30 are concentric when the locking shaft 11 is at the inner end of the guide groove 30, this ensures that the docking track 1 and the moving track 302 are on a straight line, the two tracks are aligned left and right, the alignment is accurate, and the connection is stable.

[0072] B. When the insertion rod 7 moves forward, it drives the push plate 14 forward. During the forward movement of the push rod 31, it pushes the active stop block 8 to deflect at a certain angle. The lower end of the active stop block 8 deflects out of the docking rail 1, allowing the lifting host 2 to move. During the backward movement of the positioning shaft 10 against the positioning block 19, the push rod 31 moves together. The push rod 31 pushes the passive stop block 21 to deflect at a certain angle. The lower end of the passive stop block 21 deflects out of the moving rail 302, also allowing the lifting host 2 to move. Figure 14 and Figure 15 As shown.

[0073] In this way, with the positioning shaft 10 pressing against the positioning block 19, the clamping claws on both sides encircling the locking shaft 11, and the active stop block 8 rotating out of the docking track 1 and the passive stop block 21 rotating out of the moving track 302, the lifting host 2 can move from the moving track 302 to the docking track 1, thus realizing the smooth track changing operation of the lifting host 2.

[0074] After the rail change is completed, when the moving rail 302 needs to move freely, the electric push rod 9 changes from the extended state to the retracted state. During this process: the locking shaft 11 gradually disengages from the clamping claw 20, and the clamping claw 20 returns to its initial position under the action of the tension spring 27; the positioning shaft 10 retracts, the positioning block 19 moves forward under the action of the compression spring 24, the passive stop 21 is gradually released, and the passive stop 21 returns to the moving rail 302 by its own weight. At the same time, the push plate 14 no longer contacts the active stop 8, and the active stop 8 returns to the docking rail 1 by its own weight. At this time, the moving rail 302 can move freely, and the lifting host 2 is restricted by the active stop 8, which also prevents the lifting host 2 from accidentally detaching from the docking rail 1.

[0075] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A rail locking device suitable for track systems, used for aligning and locking a moving rail (302) with a docking rail (1), characterized in that, An active mechanism (4) is provided on the docking track (1), and a passive mechanism (5) is provided at the end of the moving track (302). After the moving track (302) moves and aligns with the docking track (1), the active mechanism (4) extends and inserts into the passive mechanism (5), so that the moving track (302) and the docking track (1) are reliably connected. The active mechanism (4) includes an active plate (6), a rod (7) that slides linearly along the active plate (6), and a positioning shaft (10) and a locking shaft (11) arranged sequentially at the front end of the rod (7). The axes of the positioning shaft (10) and the locking shaft (11) are perpendicular to each other. The passive mechanism (5) includes a passive plate (18), a mounting base (22), a positioning block (19) that slides elastically and linearly along the mounting base (22), and two clamping claws (20) that are symmetrically connected above the mounting base (22). The mounting base (22) is fixedly mounted on the passive plate (18). A flared guide groove (30) is provided above the mounting base (22), and a V-shaped groove (191) is provided at the front end of the positioning block (19). The positioning shaft (10) moves forward and abuts against the V-groove (191), so that the moving rail (302) is vertically aligned with the docking rail (1). The locking shaft (11) moves forward into the guide groove (30) and is placed between the two clamping claws (20), so that the moving rail (302) is horizontally aligned with the docking rail (1). The two clamping claws (20) cooperate to clamp the locking shaft (11).

2. The rail locking device for track systems according to claim 1, characterized in that, The docking track (1) is the end of the straight track and the ring track. The docking track (1) is arranged in parallel with the moving track (302) of the H-shaped track, and the docking track (1) and the moving track (302) are at the same height.

3. The rail locking device for track systems according to claim 1, characterized in that, The active plate (6) is a horizontally arranged long plate. The active plate (6) is connected and fixed to the docking track (1). An electric push rod (9) for driving the insertion rod (7) to move linearly is provided on one side of the active plate (6). The rear end of the insertion rod (7) is connected to the electric push rod (9). The insertion rod (7) is slidably connected to the active plate (6) through a slide rail slider structure. The direction of movement of the insertion rod (7) is consistent with the length direction of the docking track (1).

4. The rail locking device for track systems according to claim 1, characterized in that, The positioning shaft (10) is arranged at the front end of the insertion rod (7), and the locking shaft (11) is close to the front end of the insertion rod (7). The axis of the locking shaft (11) is perpendicular to the active plate (6). The locking shaft (11) and the positioning shaft (10) are respectively arranged on two planes at different heights.

5. The rail locking device for track systems according to claim 1, characterized in that, The passive plate (18) is a short plate arranged horizontally, and the passive plate (18) is connected and fixed to the end of the moving rail (302); the mounting base (22) is a box that is closed on all sides and open at the front end. The mounting base (22) corresponds to the insertion rod (7) and is arranged in a straight line. The open end of the mounting base (22) faces the insertion rod (7). The clamping claw (20) and the positioning block (19) are arranged on the upper and lower parts of the mounting base (22).

6. The rail locking device for a track system according to claim 5, characterized in that, The positioning block (19) is provided with a spring rod (23) at its rear end. The spring rod (23) is a T-shaped round rod structure. One end of the spring rod (23) passes through the mounting base (22). A compression spring (24) is sleeved on the spring rod (23) located in the mounting base (22). The two sides of the V-groove (191) are tangent to the positioning shaft (10).

7. The rail locking device for a track system according to claim 1, characterized in that, The inner end face of the guide groove (30) is an arc surface. The guide groove (30) and the mounting base (22) are arranged vertically with their openings facing each other. The guide groove (30) faces the insertion rod (7). The insertion rod (7) drives the locking shaft (11) to be inserted into the guide groove (30) and is arranged concentrically with the guide groove (30).

8. The rail locking device for a track system according to claim 1, characterized in that, The clamping claws (20) are symmetrically arranged on the mounting seats (22) on both sides of the guide groove (30). The clamping claws (20) are horizontally arranged plates, and the clamping claws (20) and the positioning blocks (19) are arranged vertically at intervals. The clamping claw (20) is provided with a clamping groove (201). The clamping grooves (201) on the two clamping claws (20) are arranged in the shape of "()". The clamping grooves (201) cooperate to clamp the locking shaft (11). Each clamping groove (201) has an inner protrusion (25) at its inner end and an outer protrusion (26) at its outer end.

9. The rail locking device for a track system according to claim 8, characterized in that, The clamping claw (20) is provided with an arc-shaped limiting groove (28), and a limiting bolt (29) is provided above the mounting base (22). The limiting bolt (29) extends vertically upward through the limiting groove (28). A tension spring (27) is provided between each of the clamping claws (20) and the mounting base (22), so that the outer protrusions (26) on both sides move away from each other and the inner protrusions (25) move closer to each other; the locking shaft (11) moves forward to press against the inner protrusion (25), so that the clamping claws (20) rotate, causing the outer protrusions (26) to move closer to each other and press against the locking shaft (11).

10. The rail locking device for a track system according to claim 1, characterized in that, An active stop (8) is connected to the active plate (6). The lower end of the active stop (8) passes through the active plate (6) and extends into the docking track (1) to block the movement of the lifting host (2). The rear end of the plug rod (7) is also provided with a push plate (14) for pushing the active stop (8) to deflect out of the docking track (1). A passive stop (21) is connected to the passive plate (18). The lower end of the passive stop (21) passes through the passive plate (18) and extends into the moving rail (302) to block the movement of the lifting host (2). A push rod (31) is provided on one side of the positioning block (19). The push rod (31) extends out of the mounting base (22). The positioning block (19) pushes the passive stop (21) to deflect out of the moving rail (302) through the push rod (31).

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