Crank sliding block type ground rail turnout device

Abstract

The utility model discloses a crank slider type ground track turnout device which comprises a base and a moving platform, guide rails are fixed at two ends of the upper surface of the base through screws, sliders are slidably connected outside the guide rails, and the sliders are fixed at the bottom of the moving platform through screws. A light rail and a positioning structure for fixing the light rail are arranged above the movable platform, and a machine base is fixed to one end of the base through screws; according to the utility model, through the design of the crank connecting rod mechanism, the lateral force generated during the steering of the stacking machine is effectively counteracted by utilizing the self-locking characteristic when the crank moves to a dead point position. Even if the gear motor stops working, the mechanism can still keep stable, the connecting rod adopts a left-right thread groove design, the length of the connecting rod can be adjusted by rotating the connecting rod body, the relative position of a motor shaft and the moving platform can be adjusted, it is guaranteed that two dead points of the crank connecting rod mechanism are just flush with a butt joint rail, and accurate butt joint of a straight rail and a bent rail and an external rail is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of ground rail turnout devices, specifically a crank-slider type ground rail turnout device. Background Technology

[0002] Existing stacker crane track switch devices mostly use chain drives, with a motor driving the chain to achieve track changing. These existing devices lack self-locking capability, relying solely on the motor's braking force to prevent displacement at two critical stop positions.

[0003] A search revealed a stacker crane in patent application publication number CN105952217A. The crane includes a support frame with a drive shaft rotatably mounted on its upper end. A lifting motor, connected to the drive shaft, is also mounted on the upper end of the support frame. A lifting frame, movable vertically along the support, is mounted on the support frame. Lifting chains are connected to the two ends of the drive shaft and the two ends of the lifting frame, respectively. Rollers are mounted on the bottom of the support frame, and a traverse motor, connected to the rollers, is mounted on the bottom of the support frame. The lifting frame for storing vehicles can move vertically and horizontally along the support frame, allowing for rapid movement to designated storage positions. Vehicle storage and retrieval are fast and efficient, requiring minimal space, and are simple to operate with high utilization efficiency.

[0004] However, in actual applications, when the stacker crane turns, it generates a certain lateral force on the turnout device. The braking force of the motor brake is often insufficient to counteract this lateral force, causing the turnout device to shift laterally. Consequently, when the stacker crane passes through the transition position, it may produce abnormal noise or fail to turn normally. Utility Model Content

[0005] The purpose of this utility model is to provide a crank-slider type ground turnout device, which ensures docking accuracy by adding a self-locking function to the turnout device, and the docking position is set to be adjustable to ensure docking accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crank-slider type ground rail switch device, comprising a base and a moving platform. Guide rails are fixed to both ends of the upper surface of the base by screws. A slider is slidably connected to the outside of the guide rails. The slider is fixed to the bottom of the moving platform by screws. A light rail and a positioning structure for fixing the light rail are provided above the moving platform. A machine base is fixed to one end of the base by screws. A geared motor is installed on one side of the machine base by screws. A crank-connecting rod mechanism for driving the slider is provided at the output end of the geared motor. An auxiliary component for positioning the moving platform is provided above the base.

[0007] The crank-connecting rod mechanism includes a crank body, one end of which is fixedly connected to the output end of a geared motor, and the other end of which is threadedly connected to a connecting rod body.

[0008] One end of the connecting rod body is provided with a left threaded groove, and the other end of the connecting rod body is provided with a right threaded groove.

[0009] Preferably, the crank-connecting rod mechanism further includes a first joint bearing, the bottom end of the connecting rod body passes through the first joint bearing and is fixedly connected to the inner wall of the inner ring of the first joint bearing, one end of the first joint bearing is fixed with a first connecting shaft, one end of the first connecting shaft is fixed with a threaded shaft, and one end of the threaded shaft is provided with a rotating structure between it and the slider.

[0010] Preferably, the rotating structure includes a second joint bearing and a second connecting shaft. One end of the second connecting shaft is fixedly connected to a threaded shaft, and the other end of the second connecting shaft is fixedly connected to the second joint bearing. A rotating shaft is fixedly attached to the bottom of the moving platform, and the rotating shaft is fixedly connected to the inner wall of the inner ring of the second joint bearing.

[0011] Preferably, the positioning structure includes a pressure plate and a chemical bolt, the chemical bolt passing through the pressure plate and threadedly connected to the moving platform, and the pressure plate being fixed by the chemical bolt and then welded to the upper surface of the moving platform.

[0012] Preferably, the auxiliary component includes a baffle and a photoelectric sensor, both of which are fixed to both ends of the upper surface of the base;

[0013] Preferably, the baffle posts and photoelectric sensors are provided in four sets, and each set of baffle posts has two posts.

[0014] Preferably, the light rail includes a straight rail and a curved rail, both ends of which extend to the edge of the moving platform.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a crank-connecting rod mechanism to effectively counteract the lateral forces generated when the stacker crane turns, taking advantage of the self-locking characteristic of the crank when it reaches its dead center position. Even if the geared motor stops working, the mechanism remains stable, avoiding the shortcomings of traditional chain drives that rely on motor-operated brakes, and reducing the risk of lateral displacement of the turnout device.

[0017] The connecting rod adopts a left and right threaded groove design. Its length can be adjusted by rotating the connecting rod body, which can adjust the relative position of the motor shaft and the moving platform, ensuring that the two dead points of the crank connecting rod mechanism are exactly flush with the docking rail, and ensuring accurate docking of the straight rail and curved rail with the external rail.

[0018] The use of pressure plates and chemical bolts in the positioning structure, followed by welding to fix the light rail after bolt tightening, not only improves the installation strength but also allows for later correction of construction errors, improving the fault tolerance and long-term stability of the rail connection. The support of the moving platform can reduce the stress on the slider and ensure the life of the device. Attached Figure Description

[0019] Figure 1 This is an isometric drawing of this utility model;

[0020] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a structural schematic diagram of the crank-connecting rod mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the mobile platform of this utility model before it is moved;

[0023] Figure 5 This is a schematic diagram of the structure of the mobile platform of this utility model after it has been moved;

[0024] Figure 6 This is a schematic diagram showing the position of the light rail within the assembly line during actual application of this utility model;

[0025] Figure 7 This is a side view of the present invention;

[0026] Figure 8 This is a front view of the present invention.

[0027] In the diagram: 1. Base; 2. Moving platform; 3. Guide rail; 4. Slider; 5. Light rail; 6. Positioning structure; 7. Base; 8. Gear motor; 9. Crank-connecting rod mechanism; 10. Auxiliary components; 901. Crank body; 902. Connecting rod body; 903. First joint bearing; 904. First connecting shaft; 905. Threaded shaft; 11. Rotating structure; 1101. Second joint bearing; 1102. Second connecting shaft; 1103. Rotating shaft; 601. Pressure plate; 602. Chemical bolt; 1001. Stop post; 1002. Photoelectric sensor; 501. Straight rail; 502. Curved rail. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-8 This utility model provides a technical solution: a crank-slider type ground rail switch device, including a base 1 and a moving platform 2. Both ends of the upper surface of the base 1 are fixed with guide rails 3 by screws. A slider 4 is slidably connected to the outside of the guide rails 3. The slider 4 is fixed to the bottom of the moving platform 2 by screws. A light rail 5 and a positioning structure 6 for fixing the light rail 5 are arranged above the moving platform 2. A base 7 is fixed to one end of the base 1 by screws. A reduction motor 8 is installed on one side of the base 7 by screws. A crank-connecting rod mechanism 9 for driving the slider 4 to move is arranged at the output end of the reduction motor 8. An auxiliary component 10 for assisting the positioning of the moving platform 2 is arranged above the base 1.

[0030] The guide rail 3 is fixed to both ends of the base 1 to form a rigid track, and the slider 4 is precisely matched with the guide rail 3 to achieve sliding friction. The slider 4 is driven by the geared motor 8 to reciprocate along the axis of the guide rail 3, providing linear guidance for the moving platform 2 and ensuring the accuracy of the platform's motion trajectory.

[0031] The crank-connecting rod mechanism 9 includes a crank body 901, one end of which is fixedly connected to the output end of the geared motor 8, and the other end of the crank body 901 is threadedly connected to a connecting rod body 902.

[0032] The geared motor 8 converts rotary motion into linear motion through the crank-connecting rod mechanism 9: the output shaft of the geared motor 8 drives the crank body 901 to rotate, the crank body 901 is connected to the adjustable connecting rod body 902 through the joint bearing, and the end of the connecting rod body 902 pushes the slider 4 through the rotating structure 11.

[0033] One end of the connecting rod body 902 is provided with a left threaded groove, and the other end of the connecting rod body 902 is provided with a right threaded groove.

[0034] The connecting rod body 902 with its double thread design allows for fine-tuning of its length, ensuring precise movement of the mechanism.

[0035] The crank-connecting rod mechanism 9 also includes a first joint bearing 903. The bottom end of the connecting rod body 902 passes through the first joint bearing 903 and is fixedly connected to the inner wall of the inner ring of the first joint bearing 903. A first connecting shaft 904 is fixed to one end of the first joint bearing 903. A threaded shaft 905 is fixed to one end of the first connecting shaft 904. A rotating structure 11 is provided between one end of the threaded shaft 905 and the slider 4.

[0036] The rotating structure 11 includes a second joint bearing 1101 and a second connecting shaft 1102. One end of the second connecting shaft 1102 is fixedly connected to the threaded shaft 905, and the other end of the second connecting shaft 1102 is fixedly connected to the second joint bearing 1101. A rotating shaft 1103 is fixedly attached to the bottom of the moving platform 2, and the rotating shaft 1103 is fixedly connected to the inner wall of the inner ring of the second joint bearing 1101.

[0037] A spatial kinematic pair is formed by using a first joint bearing 903 and a second joint bearing 1101. The second joint bearing 1101 makes the threaded shaft 905 hinged to the moving platform 2. This can compensate for assembly errors, eliminate motion interference, and at the same time convert pure axial thrust into smooth movement of the moving platform 2.

[0038] The positioning structure 6 includes a pressure plate 601 and a chemical bolt 602. The chemical bolt 602 passes through the pressure plate 601 and is threadedly connected to the moving platform 2. The pressure plate 601 is fixed by the chemical bolt 602 and then welded to the upper surface of the moving platform 2.

[0039] A combination of mechanical fastening and welding is used for dual fixation: chemical bolts 602 provide high-strength preload to lock the pressure plate 601 to the platform, and subsequent welding forms a permanent connection. Notably, after the light rail 5 on the mobile platform 2 is adjusted, the pressure plate 601 is welded on-site to prevent the light rail 5 from shifting.

[0040] The auxiliary component 10 includes a baffle 1001 and a photoelectric sensor 1002, both of which are fixed to the two ends of the upper surface of the base 1.

[0041] The baffle 1001 and the photoelectric sensor 1002 are each provided in four sets, and each set of baffle 1001 has two columns.

[0042] Four sets of stop columns 1001 constitute mechanical hard limit, forming a dual protection with photoelectric sensor 1002: photoelectric sensor 1002 detects the position signal of the moving platform 2 in real time, and controls the geared motor 8 to stop when it approaches the travel limit through the main control system; the double-column stop column 1001 set provides redundant support to prevent mechanical collision when the sensor fails.

[0043] The light rail 5 includes a straight rail 501 and a curved rail 502, both ends of which extend to the edge of the moving platform 2.

[0044] When using, such as Figure 6As shown, the device controls the switching between straight rail 501 and curved rail 502 via the control moving platform 2. When the stacker crane needs linear movement, the geared motor 8 rotates, driving the crank body 901 to rotate. This, in turn, drives the first joint bearing 903 to swing via the connecting rod body 902. The first joint bearing 903, through the first connecting shaft 904, drives the threaded shaft 905 to swing. The second joint bearing 1101 rotates outside the rotating shaft 1103, causing the threaded shaft 905 to form a hinge with the moving platform 2. When the moving platform 2 reaches the first position, the photoelectric sensor 1002 senses the position, and the geared motor 8 stops. At this point, the straight rail 501 is flush with the docked straight rail 501 ground rail.

[0045] When the stacker crane needs to turn, the geared motor 8 rotates, driving the crank body 901 to rotate and reach the second position. The photoelectric sensor 1002 senses the position and the geared motor 8 stops. At this time, the curved rail 502 is just flush with the docked turning ground rail.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slider-crank rail switch device, characterized by: The utility model provides a light rail moving platform, including base (1) and mobile platform (2), the upper surface both ends of base (1) are fixed with guide rail (3) through screw, the outside sliding connection of guide rail (3) has slider (4), slider (4) is fixed in the bottom of mobile platform (2) through screw, the top of mobile platform (2) is provided with light rail (5) and the positioning structure (6) of light rail (5) fixed, one end of base (1) is fixed with machine base (7) through screw, one side of machine base (7) is installed with speed reducer motor (8) through screw, the output of speed reducer motor (8) is provided with the crank link mechanism (9) of slider (4) movement, the top of base (1) is provided with the auxiliary assembly (10) of auxiliary mobile platform (2) positioning, The crank link mechanism (9) includes a crank body (901), one end of the crank body (901) is fixedly connected with the output end of the speed reducer motor (8), and the other end of the crank body (901) is threadedly connected with a connecting rod body (902). One end of the connecting rod body (902) is provided with a left threaded groove, and the other end of the connecting rod body (902) is provided with a right threaded groove.

2. A slider-crank rail switch apparatus according to claim 1, wherein: The crank link mechanism (9) further includes a first joint bearing (903), the bottom end of the connecting rod body (902) penetrates through the first joint bearing (903) and is fixedly connected with the inner wall of the inner ring of the first joint bearing (903), one end of the first joint bearing (903) is fixedly connected with a first connecting shaft (904), one end of the first connecting shaft (904) is fixedly connected with a threaded shaft (905), and a rotating structure (11) is arranged between one end of the threaded shaft (905) and the slider (4).

3. A slider crank rail switch apparatus according to claim 2, wherein: The rotating structure (11) includes a second joint bearing (1101) and a second connecting shaft (1102), one end of the second connecting shaft (1102) is fixedly connected with the threaded shaft (905), the other end of the second connecting shaft (1102) is fixedly connected with the second joint bearing (1101), and the bottom of the mobile platform (2) is fixedly connected with a rotating shaft (1103), the rotating shaft (1103) is fixedly connected with the inner wall of the inner ring of the second joint bearing (1101).

4. A slider crank rail switch apparatus according to claim 3 wherein: The positioning structure (6) includes a pressing plate (601) and a chemical bolt (602), the chemical bolt (602) penetrates through the pressing plate (601) and is threadedly connected with the mobile platform (2), and the pressing plate (601) is welded to the upper surface of the mobile platform (2) after being fixed by the chemical bolt (602).

5. A slider-crank rail switch apparatus according to claim 1, wherein: The auxiliary assembly (10) includes a blocking column (1001) and a photoelectric sensor (1002), and the blocking column (1001) and the photoelectric sensor (1002) are both fixed to the upper surface of the base (1).

6. A slider crank rail switch apparatus according to claim 5 wherein: The blocking column (1001) and the photoelectric sensor (1002) are both provided with four groups, and each group of the blocking column (1001) is provided with two columns.

7. A slider-crank rail switch apparatus according to claim 1, wherein: The light rail (5) includes a straight rail (501) and a curved rail (502), and both ends of the straight rail (501) and the curved rail (502) extend to the edge of the mobile platform (2).

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