Novel automatic steel rail lifting appliance
By adopting a split-designed lock core and spindle in the rail automatic spreader, and adding dust cover and linear bearings, the problems of rust, stagnation and synchronous replacement of the automatic spreader are solved, achieving higher service life and lower maintenance costs.
Patent Information
- Application Number
- CN202423166280.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing automatic spreaders are prone to rust and stagnation, and the spindle and rotary lock must be replaced simultaneously, resulting in high maintenance costs and short service life.
A new type of automatic rail spreader was designed, using a split-shaped spindle, upper locking core and lower locking core. A dust cover was added to prevent rust, and a linear bearing was installed between the spindle and the top plate to reduce friction.
It effectively prevents rust and stagnation, extends the service life of the equipment, reduces maintenance costs, and improves the coherence and smoothness of the lifting.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model belongs to the field of hoisting equipment, in particular to a novel automatic rail hoist. Background Art
[0002] Since the rails have a single shape and are prone to deflection during hoisting, manually fixing the hook will not only reduce the hoisting speed but also make accidents more likely to occur. Therefore, at this stage, automatic hoists with opening and closing mechanisms are used, which rely on the up and down sliding of the main shaft to control the opening and closing of the hook below, and at the same time cooperate with the locking hook to lock the hook, which can not only increase the hoisting speed but also avoid dangerous situations for workers under the hoist. However, the main shaft of the current automatic hoist has no protective measures. It is very easy to rust and get stuck after long-term use in outdoor scenes, resulting in the lock core being unable to rotate normally, affecting the hoisting effect and production efficiency. In addition, the traditional rotary lock is designed as an integral part of the main shaft. Once one of the rotary lock or the main shaft is worn to the mechanical limit, the main shaft and the rotary lock must be completely replaced, wasting time and increasing maintenance costs. Summary of the invention
[0003] The utility model aims to solve the problems that the existing automatic hangers are prone to rust and jam and the main shaft and the rotary lock must be replaced synchronously, and to propose a new type of automatic hanger for rails.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A new type of automatic rail hanger, including a shell, the upper and lower ends of the shell are open, and the bottom of the shell is provided with a front and rear transparent clearance groove; a vertical main shaft is arranged in the shell, the upper end of the main shaft extends out of the shell, and a dust cover is arranged between the main shaft and the upper end of the shell; the rear side of the main shaft in the shell is hinged with two connecting rods, the lower ends of the two connecting rods are hinged with a hook, the middle parts of the two hooks are hinged with each other and provided with a hinge shaft, the hinge shaft is fixed to the rear side wall of the shell by bolts, and when the main shaft slides upward, the two hooks are lowered The upper lock core is fixed to the main shaft, and the upper lock core can rotate in units of 90 degrees, and the square rod and the rectangular block switch between locking and unlocking when the lower lock core rotates.
[0006] As a further description of the above technical solution:
[0007] A top plate is fixed to the upper end of the shell, a through hole is opened in the middle of the top plate, a linear bearing is arranged between the main shaft and the through hole, the linear bearing can reduce friction when the main shaft moves up and down, and extend the service life of the main shaft; the lower end of the dust cover is fixed to the top plate, and the upper end is fixed to the main shaft above the top plate, so as to prevent dust or rainwater from falling into the shell and causing rust on the main shaft, and ensure the normal working environment of the main shaft.
[0008] As a further description of the above technical solution:
[0009] Connecting rods and hooks are provided on both the front and rear sides of the main shaft, and the connecting rods and hooks on the front and rear sides are arranged symmetrically. The front and rear ends of the rectangular block are respectively fixed to the hinge shafts on the front and rear sides to avoid force on one side of the main shaft and improve the stability of the device when in use. The sleeve is fixedly connected to the lower end of the main shaft through a flange.
[0010] As a further description of the above technical solution:
[0011] The upper lock core comprises a disc, a circular hole is coaxially opened on the disc, a threaded hole is coaxially arranged on the lower end surface of the main shaft, the disc is coaxially fixed to the bottom of the main shaft by bolts, four push rods are evenly distributed along the circumference of the lower end of the disc, and a cylindrical block is fixed on the side of each push rod close to the circular hole; the lower lock core comprises a columnar slider, and the slider is coaxial with the disc, and four arc plates are fixed on the upper end of the slider, and the four arc plates are connected end to end to form a circular ring, and the upper end surface of each arc plate is higher on the left and lower on the right. A low inclined surface, a circular shaft is arranged between the four arc-shaped plates, the outer edge surface of the circular shaft is fixed to the inner wall of the arc-shaped plate, four wedge-shaped blocks are evenly distributed on the circumference of the outer edge surface of the circular shaft, a flat plate is hinged on the right side of each wedge-shaped block, and the right end of the flat plate is located above the arc-shaped plate; when the upper lock core and the lower lock core are close to each other, the cylindrical block can slide from the upper end surface of the wedge block through the flat plate to the rightmost end of the upper end surface of the arc-shaped plate, and when the upper lock core and the lower lock core are away from each other, the cylindrical block can push the flat plate upward and separate from the lower lock core.
[0012] As a further description of the above technical solution:
[0013] A round rod is coaxially fixed to the bottom of the slider, and the diameter of the round rod is smaller than the diameter of the slider. A retaining ring is fixed to the bottom of the sleeve, and the inner diameter of the retaining ring is larger than the inner diameter of the round rod and smaller than the inner diameter of the slider, thereby realizing that the lower lock core can slide up and down in the sleeve without separating from the sleeve; the square rod is located at the lower end of the round rod, and the diameter of the round rod is equal to the width of the square rod and smaller than the length of the square rod; the limiting groove is a circular sink groove, and the diameter length of the sink groove is greater than the length of the square rod; two bow-shaped baffles are fixed to the upper end of the sink groove, and the arc surfaces of the two baffles are in contact with the side walls of the sink groove, and the distance between the two baffles is greater than the width of the square rod and smaller than the length of the square rod. The two baffles allow the square rod to enter the limiting groove only at an angle along the front-rear direction of the axis; thereby realizing that when the lower lock core rotates, the square rod and the rectangular block switch between locking and unlocking.
[0014] As a further description of the above technical solution:
[0015] A plurality of balls are arranged at the bottom of the limit groove to reduce the resistance of the lower lock core when it rotates. The lower end of the slider and the upper end of the retaining ring are fixed with end gears. When the two end gears are engaged, the lower lock core can be prevented from rotating relative to the shaft sleeve.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0017] (1) The utility model adds a dust cover between the shell and the main shaft, which can effectively reduce the dust or rainwater from entering the shell. Even if it is used for a long time in outdoor scenes, it can greatly delay the development of rust on the internal components, which is beneficial to improving the continuity and smoothness of the use of the device, reducing the frequency of repair and maintenance, and saving labor costs.
[0018] (2) The utility model designs the main shaft, upper lock core and lower lock core separately. When a certain component is excessively worn, only one component needs to be replaced, without replacing the main shaft and lock core as a whole, thereby reducing maintenance costs. In addition, a linear bearing is provided between the main shaft and the top plate, and a ball bearing is provided at the bottom of the sink groove, which greatly reduces the wear of the main shaft on the side wall and the wear between the upper lock core and the lower lock core when sliding up and down. This not only makes the main shaft, upper lock core and lower lock core more durable, but also improves the smoothness of the movement of each component during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is the front view of the utility model;
[0020] Figure 2 It is a left view of the utility model;
[0021] Figure 3 This is a front cross-sectional view of the utility model when it is not clamped;
[0022] Figure 4 This is a front cross-sectional view of the utility model when clamping;
[0023] Figure 5 It is a parts diagram of the lock core 13 of the utility model;
[0024] Figure 6 It is a parts diagram of the lower lock core 11 of the utility model;
[0025] Figure 7 It is a parts diagram of the rectangular block 8 of the present utility model.
[0026] Legend: 1. Shell; 2. Gap; 3. Spindle; 4. Dust cover; 5. Connecting rod; 6. Hook; 7. Articulated shaft; 8. Rectangular block; 9. Limiting groove; 10. Bushing; 11. Lower lock core; 12. Square rod; 13. Upper lock core; 14. Top plate; 15. Linear bearing; 16. Disc; 17. Push rod; 18. Cylindrical block; 19. Slider; 20. Arc plate; 21. Round shaft; 22. Wedge block; 23. Flat plate; 24. Round rod; 25. Retaining ring; 26. Baffle. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] See also Figure 1-7 The utility model provides a new technical solution for automatic rail hanger:
[0029] A novel automatic rail hanger comprises a shell 1, the upper and lower ends of the shell 1 are open, and a front and rear transparent make way groove 2 is opened at the bottom of the shell 1; a vertical main shaft 3 is arranged in the shell 1, the upper end of the main shaft 3 extends out of the shell 1, and a dust cover 4 is arranged between the main shaft 3 and the upper end of the shell 1, a top plate 14 is fixed to the upper end of the shell 1, a through hole is opened in the middle of the top plate 14, a linear bearing 15 is arranged between the main shaft 3 and the through hole, the linear bearing 15 can reduce friction when the main shaft 3 moves up and down, and prolong the service life of the main shaft 3, a dust cover 4 is fixed to the upper end of the top plate 14, and the upper end of the dust cover 4 is fixed to the main shaft 3 above the top plate 14, so as to prevent dust or rain water from falling into the shell 1 and causing the main shaft 3 to rust, and ensure the normal working environment of the main shaft 3;
[0030] Two connecting rods 5 are hinged on the rear side of the main shaft 3, and a hook 6 is hinged on the lower end of each of the two connecting rods 5. The middle parts of the two hooks 6 are hinged to each other and the hinge shaft 7 is fixed to the rear side wall of the shell 1. When the two hinge points between the two connecting rods 5 and the two hooks 6 are close to each other, the lower ends of the hooks 6 grip toward the middle, and a rectangular block 8 is fixed to the front end of the hinge shaft 7 between the two hooks 6. A limiting groove 9 is opened at the upper end of the rectangular block 8. Connecting rods 5 and hooks 6 are provided on both the front and rear sides of the main shaft 3, and the connecting rods 5 and hooks 6 on the front and rear sides are arranged symmetrically. The front and rear ends of the rectangular block 8 are respectively fixed to the hinge shafts 7 on the front and rear sides to avoid force on one side of the main shaft 3 and improve the stability of the device when it is used.
[0031] A shaft sleeve 10 is fixed at the lower end of the main shaft 3, and an upper lock core 13 is fixed on the bottom surface of the main shaft 3 in the shaft sleeve 10. The upper lock core 13 includes a disc 16, and a circular hole is coaxially opened on the disc 16. A threaded hole is coaxially provided on the lower end surface of the main shaft 3. The disc 16 is coaxially fixed to the bottom of the main shaft 3 by bolts. Four push rods 17 are evenly distributed along the circumference of the lower end of the disc 16, and a cylindrical block 18 is fixed on the side of each push rod 17 close to the circular hole; a lower lock is provided in the shaft sleeve 10. The lower lock core 11 includes a cylindrical slider 19, and the slider 19 is coaxial with the disc 16. Four arc plates 20 are fixed on the upper end of the slider 19. The four arc plates 20 are connected end to end to form a ring, and the upper end surface of each arc plate 20 is an inclined surface with a high left and a low right. A circular shaft 21 is arranged between the four arc plates 20. The outer edge surface of the circular shaft 21 is fixed to the inner wall of the arc plate 20. Four wedge blocks 2 are evenly distributed along the circumference on the outer edge surface of the circular shaft 21. 2. A flat plate 23 is hinged on the right side of each wedge block 22, and the right end of the flat plate 23 is located above the arc plate 20. When the upper lock core 13 and the lower lock core 11 are close to each other, the cylindrical block 18 can slide from the upper end surface of the wedge block 22 through the flat plate 23 to the rightmost end of the upper end surface of the arc plate 20. When the upper lock core 13 and the lower lock core 11 are away from each other, the cylindrical block 18 can push the flat plate 23 upward and separate from the lower lock core 11; a round rod 24 is coaxially fixed to the bottom of the slider 19, and the diameter of the round rod 24 is smaller than the diameter of the slider 19. A retaining ring 25 is fixed to the bottom of the sleeve 10, and the inner diameter of the retaining ring 25 is larger than the inner diameter of the round rod 24 and smaller than the inner diameter of the slider 19, so that the lower lock core 11 can slide up and down in the sleeve 10 without separating from the sleeve 10, and the lower end of the slider 19 and the upper end of the retaining ring 25 are fixed with end face gears, and when the two end face gears are engaged, the lower lock core 11 can be prevented from rotating relative to the sleeve 10;
[0032] The lower end of the round rod 24 extends out of the shaft sleeve 10 and is fixed with a horizontal square rod 12. The diameter of the round rod 24 is equal to the width of the square rod 12 and is smaller than the length of the square rod 12. The limiting groove 9 is a circular sunken groove. A plurality of balls are provided at the bottom of the sunken groove to reduce the resistance of the lower lock core 11 during rotation. The diameter length of the sunken groove is greater than the length of the square rod 12. Two arched baffles 26 are fixed to the upper end of the sunken groove. The arc surfaces of the two baffles 26 are in contact with the side walls of the sunken groove. The distance between the two baffles 26 is greater than the width of the square rod 12 and less than the length of the square rod 12. The two baffles 26 allow the square rod 12 to enter the limiting groove 9 only at an angle along the front-to-back direction of the axis; thereby realizing that the square rod 12 and the rectangular block 8 switch between locking and unlocking when the lower lock core 11 rotates.
[0033] Working principle:
[0034] Before using the utility model, the two hinge shafts 7 are taken out from the front and rear sides of the housing 1, and then the top plate 14 is removed to lift the main shaft 3 from the upper end of the housing 1, and then the lower lock core 11 is pushed upward to separate the two end face gears between the lower lock core 11 and the retaining ring 25, and then the lower lock core 11 is rotated to make the axis of the square rod 12 along the front and rear direction, and the rectangular block 8 is lifted up so that the square rod 12 can pass through between the two baffles 26 and enter the sink, and the lower lock core 11 is rotated again to make the axis of the square rod 12 along the left and right direction, and then the lower lock core 11 is loosened. Open the lower lock core 11, the two end gears are meshed so that the lower lock core 11 cannot rotate in the sleeve 10, then remove the sleeve 10 from the lower end of the main shaft 3, observe the angles of the four arc plates 20 and the flat plate 23, reinstall and fix the upper lock core 13, so that the four cylindrical blocks 18 on the upper lock core 13 are aligned with the four flat plates 23 of the lower lock core 11, and finally refix the sleeve 10 to the lower end of the main shaft 3, then put the main shaft 3 into the housing 1, and install the two hinge shafts 7, the top plate 14 and the dust cover 4;
[0035] When in use, the hoisting rope of the crane is fixedly connected to the main shaft 3 at the upper end of the dust cover 4. Since the square rod 12 is located in the limiting groove 9 at this time, the intersection point between the two connecting rods 5 and the main shaft 3 and the intersection point between the two hooks 6 are at the minimum, and the lower ends of the two hooks 6 are in an open state. The crane is driven to hoist the rail. When the device contacts the rail from top to bottom, the upper end of the rail enters the housing 1 from the giving way groove 2 and is between the two hooks 6. The device continues to move downward, and the rectangular block 8 contacts the upper end of the rail first, and then the cylindrical block 18 of the upper lock core 13 contacts the flat plate 23. Since the bottom of the sink is provided with a ball bearing, the upper lock core 13 pushes the lower lock core 11 to rotate under the deadweight of the main shaft 3, and the cylindrical block 18 slides from the upper end of the flat plate 23 to the rightmost end of the upper end surface of the arc plate 20. Since there are four arc plates 20, the lower lock core 11 rotates 90° at this time, and the axis of the square rod 12 changes from the left-right direction to the front-back direction. The crane is controlled to lift the main shaft 3, and the square rod 12 passes through between the two baffles 26 to disengage the rectangular block 8. The lower ends of the two hooks 6 gradually grasp the middle until the lower ends of the hooks 6 clamp the rails, and the main shaft 3 is continuously lifted to lift the rails.
[0036] When the rail is moved to the designated position and lowered, the main shaft 3 moves downward relative to the rail, the distance between the hinge point of the main shaft 3 and the connecting rod 5 and the hinge point between the two hooks 6 becomes smaller, the lower ends of the two hooks 6 separate to both sides, the rectangular block 8 contacts the upper end of the rail again, the main shaft 3 continues to move downward, the square rod 12 enters the limit groove 9 again, and then the upper lock core 13 again rotates the lower lock core 11 90°, the axis of the square rod 12 changes to the left and right direction, and the device returns to the state before clamping the rail, and finally the main shaft 3 is lifted up, and the device is separated from the rail;
[0037] During use, the ball at the bottom of the groove greatly reduces the friction between the lower lock core 11 and the rectangular block 8, which also reduces the friction between the upper lock core 13 and the lower lock core 11 when the upper lock core 13 pushes the lower lock core 11 to rotate, making the upper lock core 13 and the lower lock core 11 more durable, and the linear bearing 15 between the main shaft 3 and the top plate 14 can also reduce the friction between the main shaft 3 and the top plate 14, reducing the replacement frequency of the main shaft 3, and at the same time, the dust cover 4 above the top plate 14 can prevent dust or rainwater from entering the shell 1, and it will not rust or get stuck even if used outdoors for a long time, thereby improving the smoothness of the device during use.
[0038] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Technical personnel familiar with the technical field can make equivalent replacements or changes according to the technical scheme and utility model concept of the utility model within the technical scope disclosed by the utility model, and all of them should be included in the protection scope of the utility model.
Claims
1. A new type of automatic rail hanger, characterized in that: The invention comprises a shell (1), wherein the upper and lower ends of the shell (1) are open, and a front-to-back transparent clearance groove (2) is formed at the bottom of the shell (1); a vertical main shaft (3) is provided in the shell (1), the upper end of the main shaft (3) protrudes out of the shell (1), and a dust cover (4) is provided between the main shaft (3) and the upper end of the shell (1); two connecting rods (5) are hinged to the rear side of the main shaft (3) in the shell (1), and the lower ends of the two connecting rods (5) are hinged to a hook (6), and the middle parts of the two hooks (6) are hinged to each other and provided with a hinge shaft (7), and the hinge shaft (7) is fixed to the rear side wall of the shell (1) by bolts, and when the main shaft (3) slides upward, the lower ends of the two hooks (6) grip the middle, and the space between the two hooks (6) is A rectangular block (8) is fixed at the front end of the hinge shaft (7), and a limiting groove (9) is formed at the upper end of the rectangular block (8); a shaft sleeve (10) is fixed at the lower end of the main shaft (3), and a lower lock core (11) is arranged in the shaft sleeve (10). The lower lock core (11) can slide up and down in the shaft sleeve (10) without being separated from the shaft sleeve (10); the lower end of the lower lock core (11) extends out of the shaft sleeve (10) and is fixed with a horizontal square rod (12); an upper lock core (13) is arranged above the lower lock core (11), and the upper lock core (13) is fixed to the main shaft (3). The upper lock core (13) can make the lower lock core (11) rotate in units of 90 degrees, and when the lower lock core (11) rotates, the square rod (12) and the rectangular block (8) switch between locking and unlocking.
2. A new type of automatic rail hanger according to claim 1, characterized in that: A top plate (14) is fixed to the upper end of the housing (1), a through hole is opened in the middle of the top plate (14), a linear bearing (15) is provided between the main shaft (3) and the through hole, the lower end of the dust cover (4) is fixed to the top plate (14), and the upper end is fixed to the main shaft (3) above the top plate (14).
3. The new type of automatic rail hanger according to claim 1 is characterized in that: The main shaft (3) is provided with connecting rods (5) and hooks (6) on both the front and rear sides, and the connecting rods (5) and hooks (6) on the front and rear sides are arranged symmetrically. The front and rear ends of the rectangular block (8) are respectively fixed to the hinge shafts (7) on the front and rear sides. The shaft sleeve (10) is fixedly connected to the lower end of the main shaft (3) through a flange.
4. The new type of automatic rail hanger according to claim 1 is characterized in that: The upper lock core (13) comprises a disk (16), a circular hole is coaxially formed on the disk (16), a threaded hole is coaxially formed on the lower end surface of the main shaft (3), the disk (16) is coaxially fixed to the bottom of the main shaft (3) by bolts, four push rods (17) are evenly distributed along the circumference of the lower end of the disk (16), and a cylindrical block (18) is fixed on the side of each push rod (17) close to the circular hole; the lower lock core (11) comprises a columnar slider (19), and the slider (19) is coaxial with the disk (16), and the upper end of the slider (19) is Four arc-shaped plates (20) are fixed, and the four arc-shaped plates (20) are connected end to end to form a circular ring, and the upper end surface of each arc-shaped plate (20) is an inclined surface with a higher left side and a lower right side. A circular shaft (21) is provided between the four arc-shaped plates (20), and the outer edge surface of the circular shaft (21) is fixed to the inner wall of the arc-shaped plate (20). Four wedge-shaped blocks (22) are evenly distributed along the circumference on the outer edge surface of the circular shaft (21), and a flat plate (23) is hinged on the right side of each wedge-shaped block (22), and the right end of the flat plate (23) is located above the arc-shaped plate (20).
5. The new type of automatic rail hanger according to claim 4 is characterized in that: A round rod (24) is coaxially fixed to the bottom of the slider (19), the diameter of the round rod (24) is smaller than the diameter of the slider (19), a retaining ring (25) is fixed to the bottom of the shaft sleeve (10), the inner diameter of the retaining ring (25) is larger than the inner diameter of the round rod (24) and smaller than the inner diameter of the slider (19); the square rod (12) is located at the lower end of the round rod (24), the diameter of the round rod (24) is equal to the width of the square rod (12) and smaller than the length of the square rod (12); the limiting groove (9) is a circular sunken groove, the diameter of the sunken groove is larger than the length of the square rod (12), two arched baffles (26) are fixed to the upper end of the sunken groove, the arc surfaces of the two baffles (26) are in contact with the side wall of the sunken groove, the distance between the two baffles (26) is larger than the width of the square rod (12) and smaller than the length of the square rod (12), and the two baffles (26) allow the square rod (12) to enter the limiting groove (9) only at an angle along the front-rear direction of the axis.
6. A new type of automatic rail hanger according to claim 5, characterized in that: A plurality of ball bearings are arranged at the bottom of the limiting groove (9), and end face gears are fixed to the lower end of the slider (19) and the upper end of the retaining ring (25).