Lifting equipment for high-precision positioning occasion and using method of lifting equipment

Abstract

The invention provides lifting equipment for a high-precision positioning occasion and a using method of the lifting equipment, and belongs to the technical field of elevators, the lifting equipment comprises rails arranged in parallel at intervals, a lift car arranged among the four rails and a guide shoe assembly arranged on the side wall of the lift car, and the guide shoe assembly comprises a bottom plate, a mounting seat, a swing arm, a guide wheel, a supporting rod, a pull rod and a spring. According to the technical scheme, the rail and guide shoe assembly is arranged, the combination of the single-side double rails and the rolling guide shoes is adopted, and the installation precision of the guide rails and the positions of the guide shoes are adjusted, so that the operation stability of the lift car is improved, the stopping precision is more precise, and the overall stability in the material handover process is enhanced; therefore, the defects that an original lifting mechanism is poor in stability and positioning accuracy can be well overcome.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to a lifting device for high-precision positioning and a method of using the same. Background Art

[0002] With the steady growth of my country's economy, the logistics industry has ushered in rapid development. In this process, as a key link in the logistics system, the role of warehouses has become increasingly prominent. Logistics warehouse elevators are important equipment for vertical transportation of goods within warehouses. Their technical level has become a key factor directly affecting logistics efficiency. In stereoscopic warehouses and intelligent storage systems, warehouse elevators often need to meet many unique challenges and requirements to meet various needs in order to increase operational value. Elevators in warehouses usually need to carry heavy goods such as mechanical equipment, large furniture, etc., and also carry various cargo pallets such as electronic equipment, food and beverages, etc. This requires the lifting equipment to have high load-bearing capacity and good stability. The rolling guide shoes used in conventional freight elevators, such as a roller guide shoe with announcement number CN111392546B, combine the swing arms of the first roller and the second roller into one, so that the first roller and the second roller are linked. Even if the elevator is overweight or overloaded, the first roller and the second roller on both sides of the roller guide shoe can contact the guide rail, reducing the probability of roller derailment and making the elevator run more stable. However, when transporting large-mass and large-volume items, or in situations where high-precision docking is required, the center of gravity changes due to material handover, car operation, etc., resulting in increased wear between the rollers at the stress-bearing parts and the swing arms connected to them, a larger gap between the rollers and the swing arm connecting shafts, and swaying of the rollers, resulting in poor stability and balance. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a lifting device for high-precision positioning occasions and a method of using the same, so as to reduce the sway of the guide wheel during use and improve the stability of the car.

[0004] In order to solve the above technical problems, this application provides the following technical solutions: A lifting device for high-precision positioning occasions, comprising rails arranged in parallel at intervals, a car is arranged between four of the rails, and a guide shoe assembly is arranged on the side wall of the car, the guide shoe assembly comprises a bottom plate, a mounting seat, a swing arm, a guide wheel, a support rod, a pull rod and a spring, the side wall of the bottom plate is provided with a slot for docking with the rail, the mounting seat is fixed to both sides of the top of the bottom plate, the swing arm is hinged to one side of the mounting seat, the guide wheel is rotatably connected to one side of the swing arm through a bearing, the support rod is connected to the middle position of the top of the bottom plate, the pull rod is connected to one side of the support rod, and the spring is sleeved on the outside of the pull rod; One end of the swing arm is in contact with the end of the spring, and a limit assembly is symmetrically arranged on the outer side wall of the swing arm, and the limit assembly includes: a connecting rod and a roller, wherein the connecting rod is distributed on the outer side of the swing arm, and the roller is rotatably connected to the side of the slider facing the guide wheel through a rotating shaft; The outer peripheral surface of the roller abuts against the inner peripheral wall surface of the guide wheel.

[0005] Preferably, the position limiting assembly further comprises: a slider and a screw rod, wherein the slider is slidably arranged in the inner through hole of the connecting rod along the diameter direction of the guide wheel, and the screw rod is arranged through the slider; The roller is rotatably connected to one side of the sliding block.

[0006] Preferably, the center axis of the roller is arranged parallel to the center axis of the guide wheel, the end of the roller is threadedly connected with an end cover, and a ball is clamped in the through hole of the side wall of the end cover.

[0007] Preferably, the connecting rods are radially distributed on one side of the central axis of the guide wheel.

[0008] Preferably, the two connecting rods on the outer side walls of the swing arm are symmetrically arranged.

[0009] Preferably, the end face of the guide wheel is provided with a groove, the roller is embedded in the groove on the end face of the guide wheel, and the roller abuts against the outer circumferential portion of the groove on the end face of the guide wheel.

[0010] Preferably, a rubber ring is provided in the end groove of the guide wheel.

[0011] Preferably, a locking nut 1 is provided at the end of the pull rod, and the locking nut 1 abuts against the other end of the spring.

[0012] Preferably, an adjustment column is further provided on the top edge of the base plate, the adjustment column passes through one end of the swing arm, and a locking nut 2 is provided on the outer side of the adjustment column.

[0013] On the other hand, the present application provides a method for using a lifting device for high-precision positioning, S1: during the movement of the guide wheel along the track, the guide wheel is squeezed by a spring so that the guide wheel is closely attached to the side wall of the track to maintain the stability of the car; S2: The roller is fitted to the inner ring of the guide wheel, and the guide wheel is limited by the roller to reduce the deviation of the guide wheel and improve the stability of the car movement.

[0014] Compared with the prior art, this application has at least the following beneficial effects: In the above scheme, by setting the track and guide shoe assembly, adopting the combination of single-sided double tracks and rolling guide shoes, and adjusting the guide rail installation accuracy and the position of the guide shoe, the smoothness of the car operation is increased, the stopping accuracy is more precise, and the overall stability during the material handover process is enhanced, so that the shortcomings of poor stability and poor positioning accuracy of the original lifting mechanism can be better solved.

[0015] In the above scheme, by arranging a guide wheel, a swing arm, a connecting rod and a roller, the roller arranged on the connecting rod provides a limiting and guiding function for the guide wheel, and the two rollers limit the moving space of the guide wheel relative to the swing arm to share the pressure at the connection part between the guide wheel and the swing arm, thereby reducing the wear of the connection part between the guide wheel and the swing arm, and extending the service life of the guide wheel, the swing arm and their connecting shaft. At the same time, the two rollers can rotate relative to the guide wheel, which can reduce the guide wheel deflection and improve the stability of the guide wheel during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0017] Figure 1 It is a schematic diagram of the overall structure in this application; Figure 2 This is a schematic diagram of the guide shoe assembly structure in this application; Figure 3 This is a schematic diagram of the bottom plate structure in this application; Figure 4 This is a schematic diagram of the swing arm structure in this application; Figure 5 This is a schematic diagram of the connecting rod structure in this application; Figure 6 This is a schematic diagram of the roller structure in this application; Figure 7 This is a schematic diagram of the cross-sectional structure of the guide wheel in this application.

[0018] [Reference Signs] 1. Track; 2. Car; 3. Guide shoe assembly; 301. Base plate; 3011. Adjusting column; 3012. Locking nut 2; 302. Mounting seat; 303. Swing arm; 304. Guide wheel; 3041. Rubber ring; 305. Support rod; 306. Pull rod; 3061. Locking nut 1; 307. Spring; 4. Connecting rod; 401. Roller; 4011. End cover; 4012. Ball; 402. Slider; 403. Screw. DETAILED DESCRIPTION

[0019] The following is a detailed description of a lifting device for high-precision positioning provided by the present application in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present application.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 A lifting device for high-precision positioning is shown, and the embodiment of the present application provides, comprising rails 1 arranged in parallel at intervals, a car 2 is arranged between four rails 1, and a guide shoe assembly 3 is arranged on the side wall of the car 2, the guide shoe assembly 3 comprises a base plate 301, a mounting seat 302, a swing arm 303, a guide wheel 304, a support rod 305, a pull rod 306 and a spring 307, a side wall of the base plate 301 is provided with a slot for docking with the rail 1, the mounting seat 302 is fixed to both sides of the top of the base plate 301, the swing arm 303 is hinged to one side of the mounting seat 302, the guide wheel 304 is rotatably connected to one side of the swing arm 303 through a bearing, the support rod 305 is connected to the middle position of the top of the base plate 301, the pull rod 306 is connected to one side of the support rod 305, and the spring 307 is sleeved on the outside of the pull rod 306; One end of the swing arm 303 is in contact with the end of the spring 307. A limit assembly is symmetrically arranged on the outer wall of the swing arm 303. The limit assembly includes: a connecting rod 4 and a roller 401. The connecting rod 4 is distributed on the outer side of the swing arm 303. The roller 401 is rotatably connected to the side of the slider 402 facing the guide wheel 304 through a rotating shaft. The outer peripheral surface of the roller 401 abuts against the inner peripheral wall surface of the guide wheel 304; The side notches of the bottom plate 301 are used to dock with the track 1, so that the side wall of the bottom plate 301 can be flush with the side wall of the track 1, so that the guide wheel 304 on the bottom plate 301 abuts against the track 1. The two guide wheels 304 arranged on the bottom plate 301 are respectively located on both sides of the track 1, and the two guide wheels 304 are installed at the same height. The bottom plate 301 is fixed on the car 2. During the movement of the car 2, the guide wheel 304 contacts the track 1 under the action of the spring 307, providing a guiding effect to overcome the twisting of the car and the counterweight device on the traction wire rope and the deflection or swing under an asymmetric load. In this process, the spring 307 provides a good shock absorbing effect for the guide wheel 304, and the roller 401 arranged on the connecting rod 4 provides a limit and guiding function for the guide wheel 304. The line connecting the two rollers 401 arranged on the inner ring of the guide wheel 304 just passes through the center of the inner ring of the guide wheel 304, and the midpoint of the line connecting the two rollers 401 is located at the center of the guide wheel 304. The two rollers 401 limit the moving space of the guide wheel 304 relative to the swing arm 303 to share the pressure of the guide wheel 304 on the track 1. The pressure concentration at the connection part between the guide wheel 304 and the swing arm 303 is reduced, thereby reducing the wear of the connection part between the guide wheel 304 and the swing arm 303, and extending the service life of the guide wheel 304, the swing arm 303 and their connecting shafts; At the same time, both rollers 401 can rotate relative to the guide wheel 304, so as to maintain the stability of the rotation of the guide wheel 304. There is line contact between the rollers 401 and the guide wheel 304, and the contact portion is orthogonal to the end face of the guide wheel 304. Therefore, the rollers 401 have a limiting effect on the guide wheel 304, which can reduce the deflection of the guide wheel 304 and improve the stability of the guide wheel 304 during operation.

[0022] In this embodiment, Figure 2-Figure 6 As shown: the limit assembly also includes: a slider 402 and a screw 403, the slider 402 can be slidably arranged in the inner through hole of the connecting rod 4 along the diameter direction of the guide wheel 304, and the screw 403 is arranged through the slider 402; The roller 401 is rotatably connected to one side of the slider 402; like Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, a slider 402 and a screw 403 are provided to control the position of the roller 401 relative to the guide wheel 304, and the pressure of the contact portion of the roller 401 relative to the guide wheel 304 is adjusted to ensure smooth rotation of the guide wheel 304, while enabling the roller 401 to have good limiting and supporting effects.

[0023] The central axis of the roller 401 is arranged parallel to the central axis of the guide wheel 304. The end of the roller 401 is threadedly connected with an end cover 4011. A ball 4012 is clamped in a through hole on the side wall of the end cover 4011. like Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the end face of the roller 401 is parallel to the end face of the guide wheel 304, and the roller 401 abuts against the inner wall of the guide wheel 304. The guide wheel 304 can only rotate, and the guide wheel 304 is limited by the roller 401 and is not easy to deflect; The ball 4012 arranged on the end face of the roller 401 can abut against the guide wheel 304, and there is point contact between the ball 4012 and the guide wheel 304, and the ball 4012 and the roller 401 can rotate independently, thereby avoiding the situation where the end face of the roller 401 is squeezed when the guide wheel 304 swings and causing the roller 401 to get stuck, thereby ensuring the normal use of the roller 401.

[0024] The connecting rod 4 is radially distributed on one side of the central axis of the guide wheel 304; like Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, a plurality of connecting rods 4 and rollers 401 may be provided on the outer wall of the swing arm 303 to further disperse the extrusion force on the guide wheel 304, reduce the wear of the connection portion between the guide wheel 304 and the swing arm 303, and improve the service life and stability.

[0025] The two connecting rods 4 on the outer side wall of the swing arm 303 are symmetrically arranged; like Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the connecting rods 4 symmetrically arranged on the swing arm 303 can be evenly stressed, which is convenient for dispersing the pressure and reducing the concentrated wear of the single connecting rod 4 and the roller 401.

[0026] The end surface of the guide wheel 304 is provided with a groove, and the roller 401 is embedded in the groove of the end surface of the guide wheel 304, and the roller 401 abuts against the outer circumference of the groove of the end surface of the guide wheel 304; A rubber ring 3041 is provided in the end groove of the guide wheel 304; like Figure 2 , Figure 3 as well as Figure 4 As shown, the roller 401 cooperates with the concave part of the groove of the guide wheel 304 to achieve a stabilizing effect. At the same time, adding the rubber ring 3041 can reduce the rigid contact, which is beneficial to controlling the wear of the roller 401 and has the effect of reducing vibration and noise.

[0027] The end of the pull rod 306 is provided with a locking nut 3061, a locking nut 3061 abuts against the other end of the spring 307; like Figure 2 and Figure 3 As shown, the pull rod 306 and the locking nut 3061 are used to limit the position of the spring 307 to prevent the spring 307 from detaching from the pull rod 306. At the same time, the locking nut 3061 can adjust the squeezing force of the spring 307 on the swing arm 303, thereby controlling the pressure of the contact part between the guide wheel 304 and the track 1.

[0028] An adjustment column 3011 is also provided at the top edge of the bottom plate 301. The adjustment column 3011 passes through one end of the swing arm 303. A locking nut 3012 is provided on the outer side of the adjustment column 3011. like Figure 2 and Figure 3 As shown, the adjustment column 3011 and the locking nut 3012 can prevent the swing arm 303 and the guide wheel 304 from excessively squeezing the track 1, and can easily limit the position of the swing arm 303 during maintenance, which is more convenient.

[0029] Furthermore, a lifting device for high-precision positioning is used as follows: S1: When the guide wheel 304 moves along the track 1, the guide wheel 304 is squeezed by the spring 307 so that the guide wheel 304 is closely attached to the side wall of the track 1 to maintain the stability of the car 2; S2: The roller 401 is fitted to the inner ring of the guide wheel 304, and the guide wheel 304 is limited by the roller 401, so as to reduce the deviation of the guide wheel 304 and improve the movement stability of the car 2.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for high-precision positioning, comprising rails (1) arranged in parallel at intervals, a car (2) being arranged between four of the rails (1), characterized in that: a guide shoe assembly (3) arranged on the side wall of the car (2), the guide shoe assembly (3) comprising a base plate (301), a mounting seat (302), a swing arm (303), a guide wheel (304), a support rod (305), a pull rod (306) and a spring (307); a groove for docking with the track (1) is provided on the side wall of the base plate (301); the mounting seat (302) is fixed to both sides of the top of the base plate (301); the swing arm (303) is hinged to one side of the mounting seat (302); the guide wheel (304) is rotatably connected to one side of the swing arm (303) via a bearing; the support rod (305) is connected to the middle position of the top of the base plate (301); the pull rod (306) is connected to one side of the support rod (305); and the spring (307) is sleeved on the outside of the pull rod (306); One end of the swing arm (303) is in contact with the end of the spring (307); a limit assembly is symmetrically arranged on the outer side wall of the swing arm (303); the limit assembly comprises: a connecting rod (4) and a roller (401); the connecting rod (4) is distributed on the outer side of the swing arm (303); and the roller (401) is rotatably connected to the side of the slider (402) facing the guide wheel (304) via a rotating shaft; The outer peripheral surface of the roller (401) abuts against the inner peripheral wall surface of the guide wheel (304).

2. The lifting device for high-precision positioning according to claim 1 is characterized in that: The position limiting assembly further comprises: a slider (402) and a screw rod (403); the slider (402) is slidably arranged in the inner through hole of the connecting rod (4) along the diameter direction of the guide wheel (304); and the screw rod (403) is arranged to penetrate the slider (402); The roller (401) is rotatably connected to one side of the slider (402).

3. The lifting device for high-precision positioning according to claim 1 is characterized in that: The central axis of the roller (401) is arranged parallel to the central axis of the guide wheel (304); an end of the roller (401) is threadedly connected to an end cover (4011); and a ball (4012) is clamped in a through hole on the side wall of the end cover (4011).

4. The lifting device for high-precision positioning according to claim 1 is characterized in that: The connecting rods (4) are radially distributed on one side of the central axis of the guide wheel (304).

5. The lifting device for high-precision positioning according to claim 1 is characterized in that: The two connecting rods (4) opposite to each other on the outer side walls of the swing arm (303) are symmetrically arranged.

6. The lifting device for high-precision positioning according to claim 1 is characterized in that: The end surface of the guide wheel (304) is provided with a groove, the roller (401) is embedded in the groove on the end surface of the guide wheel (304), and the roller (401) abuts against the outer circumference of the groove on the end surface of the guide wheel (304).

7. The lifting device for high-precision positioning according to claim 6, characterized in that: A rubber ring (3041) is arranged in the groove at the end of the guide wheel (304).

8. The lifting device for high-precision positioning according to claim 1, characterized in that: A locking nut (3061) is provided at the end of the pull rod (306), and the locking nut (3061) abuts against the other end of the spring (307).

9. The lifting device for high-precision positioning according to claim 1, characterized in that: An adjustment column (3011) is also provided at the top edge of the bottom plate (301), the adjustment column (3011) passes through one end of the swing arm (303), and a second locking nut (3012) is provided on the outer side of the adjustment column (3011).

10. The method for using the lifting device for high-precision positioning according to any one of claims 1 to 9, characterized in that: S1: When the guide wheel (304) moves along the track (1), the guide wheel (304) is squeezed by the spring (307) so that the guide wheel (304) is closely attached to the side wall of the track (1), thereby maintaining the stability of the car (2); S2: The roller (401) is fitted onto the inner ring of the guide wheel (304), and the guide wheel (304) is limited by the roller (401), thereby reducing the deflection of the guide wheel (304) and improving the stability of the movement of the car (2).

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