Lifting mechanism

Abstract

The utility model relates to the field of lifting equipment, and provides a lifting mechanism. The lifting mechanism comprises a base frame, first bases, a lifting table, a driving part, a first pulley and a flexible rope, and the first bases are arranged on the upper side of the base frame at intervals and fixed relative to the base frame; the lifting table is arranged between the first base and the base frame in a lifting manner; the lower end of the driving part is mounted on the base frame, and the upper end of the driving part can lift relative to the lower end; the first pulley is mounted on the lower side of the first base; the flexible rope is connected to the upper end of the driving piece, and one end of the flexible rope bypasses the first pulley and is connected to the upper side of the lifting table. The lifting mechanism can drive the lifting table to ascend and descend through the driving piece and the flexible rope, the structure is simplified, and operation is convenient. Moreover, in the lifting process of the lifting platform, the flexible rope can play a role in buffering, the motion impact force of the lifting platform can be reduced, and friction, vibration and noise can be reduced, so that the stability of the lifting platform in the lifting process can be improved, and the use performance and use reliability of the lifting mechanism can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of lifting equipment, and in particular, relates to a lifting mechanism. Background Art

[0002] The existing lifting mechanism is usually connected to the lifting platform through an electric push rod and pushes and pulls the lifting platform in the up and down direction to achieve the lifting of the lifting platform. However, in this way, the stability of the lifting platform during the lifting process will be relatively poor. Utility Model Content

[0003] The embodiment of the present application provides a lifting mechanism, which aims to solve the problem that the lifting platform of the existing lifting mechanism has poor stability during the lifting process.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present application is: a lifting mechanism, the lifting mechanism comprising:

[0005] Scaffolding;

[0006] A first base, spaced apart on the upper side of the base frame and fixed relative to the base frame;

[0007] A lifting platform is liftably disposed between the first base and the base frame;

[0008] A driving member, the lower end of which is mounted on the base frame, and the upper end of which can be raised and lowered relative to the lower end;

[0009] a first pulley mounted on the lower side of the first base;

[0010] A flexible rope is connected to the upper end of the driving member, and one end of the flexible rope passes around the first pulley and is connected to the upper side of the lifting platform.

[0011] In some embodiments, the lifting mechanism further includes a second pulley and a third pulley, the second pulley is mounted on the upper end of the driving member, the third pulley is mounted on the lower side of the first base, and the third pulley and the first pulley are arranged at intervals along the left-right direction; the central axes of the first pulley, the second pulley and the third pulley are all extended along the front-back direction;

[0012] The flexible rope is sequentially wound around the first pulley, the second pulley and the third pulley, and opposite ends of the flexible rope are connected to the upper side of the lifting platform.

[0013] In some embodiments, the third pulley and the first pulley are symmetrically arranged on the left and right sides of the second pulley.

[0014] In some embodiments, the two connection points between the flexible rope and the lifting platform are symmetrically arranged on the left and right sides of the lifting platform.

[0015] In some embodiments, the flexible cord is entirely in the same plane.

[0016] In some embodiments, the lower end of the driving member is rotatably mounted on the base frame, and the rotation axis of the driving member is perpendicular to the center axis of the first pulley.

[0017] In some embodiments, the lifting mechanism also includes a second base, which is arranged between the lifting platform and the base frame and fixed relative to the base frame. The second base is provided with a constraint hole that passes through the up and down directions. The upper end of the driving member is passed through the constraint hole, and the constraint hole constrains the rotation range of the driving member.

[0018] In some embodiments, the second base includes a first plate, a second plate and a restraining member, the first plate is horizontally arranged and fixed relative to the base frame, the second plate is vertically connected to the first plate, the first plate is provided with a first hole, the first hole penetrates the first plate in the up and down direction, and extends to the second plate in a direction close to the second plate, the second plate is provided with a second hole, the second hole penetrates the second plate in the thickness direction of the second plate, and is connected to the first hole in a direction close to the first plate, the restraining member is detachably connected to the second plate and inserted into the first hole, and the restraining member limits the first hole to the restraining hole.

[0019] In some embodiments, the lifting mechanism also includes a guide assembly, which includes a guide rod and a guide tube sleeved on the outer circumference of the guide rod, the guide rod and the guide tube are both extended in the up and down directions, one of the guide rod and the guide tube is fixed relative to the base frame, and the other one is fixed to the lifting platform.

[0020] In some embodiments, moving wheels are provided on the lower side of the base.

[0021] The beneficial effects of the lifting mechanism provided by the present application are:

[0022] The lifting mechanism provided in the embodiment of the present application can make the upper end of the driving member rise relative to its lower end, so as to drive the part of the flexible rope connected to it to rise via the upper end of the driving member, thereby shortening the part of the flexible rope extending upward from the upper end of the driving member to the first pulley, and increasing the part of the flexible rope extending downward from the first pulley to the upper side of the lifting platform, so as to promote the lifting platform to descend in combination with gravity. Conversely, the upper end of the driving member can be lowered relative to its lower end, so as to drive the part of the flexible rope connected to it to descend via the upper end of the driving member, thereby increasing the part of the flexible rope extending upward from the upper end of the driving member to the first pulley, and shortening the part of the flexible rope extending downward from the first pulley to the upper side of the lifting platform, so as to promote the lifting platform to rise. Thus, the lifting mechanism provided in the present embodiment can drive the lifting platform to rise and fall via the flexible rope through the driving member, and the structure is simplified and the operation is convenient. In addition, during the lifting process of the lifting platform, the flexible rope can play a buffering role, reduce the impact force of the movement of the lifting platform, reduce friction, vibration and noise, thereby improving the stability of the lifting platform during the lifting process, and improving the performance, reliability and user experience of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A three-dimensional schematic diagram of a lifting mechanism provided in some embodiments of the present application;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the driving member, the first pulley, the second pulley, the third pulley and the flexible rope is provided;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure of the lifting platform, the second base and the guide assembly is provided.

[0027] Among them, the reference numerals in the figure are:

[0028] 10-base, 20-first base, 30-lifting platform, 40-driving member, L4-rotation axis of the driving member, 50-first pulley, L1-central axis of the first pulley, 60-flexible rope, 61-first section, 62-second section, 63-third section, 64-fourth section, 70-second pulley, L2-central axis of the second pulley, 80-third pulley, L3-central axis of the third pulley, 90-second base, 91-constraint hole, 92-first plate, 921-first hole, 93-second plate, 931-second hole, 94-constraint, 95-third plate, 100-guide assembly, 101-guide rod, 102-guide tube, 110-moving wheel, 120-support frame, 121-handrail. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clear and understandable, the application is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0030] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In the description of this application, according to Figure 1 The XYZ rectangular coordinate system established in is defined as follows: the side located in the positive direction of the X axis is defined as the front, and the side located in the negative direction of the X axis is defined as the back; the side located in the positive direction of the Y axis is defined as the left, and the side located in the negative direction of the Y axis is defined as the right; the side located in the positive direction of the Z axis is defined as the top, and the side located in the negative direction of the Z axis is defined as the bottom.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] A lifting mechanism is a mechanism used to lift or adjust the height of an object in the up and down direction. In some cases, the lifting mechanism includes an electric push rod and a lifting platform connected to the upper end of the electric push rod. Based on this, the lifting mechanism can push and pull the lifting platform in the up and down direction by lifting and lowering the upper end of the electric push rod relative to the lower end thereof, thereby achieving the lifting and lowering movement of the lifting platform. However, in this way, the stability of the lifting platform during the lifting process will be relatively poor.

[0035] Therefore, the embodiment of the present application provides a lifting mechanism that can improve the stability of the lifting platform during the lifting process.

[0036] The specific implementation of this application is described in detail below in conjunction with specific embodiments:

[0037] See also Figure 1 , Figure 2 Some embodiments of the present application provide a lifting mechanism, which includes a base frame 10, a first base 20, a lifting platform 30, a driving member 40, a first pulley 50 and a flexible rope 60. The first base 20 is arranged at an interval on the upper side of the base frame 10 and is fixed relative to the base frame 10; the lifting platform 30 is arranged between the first base 20 and the base frame 10 in a liftable manner; the lower end of the driving member 40 is installed on the base frame 10, and the upper end of the driving member 40 can be lifted relative to the lower end thereof; the first pulley 50 is installed on the lower side of the first base 20; the flexible rope 60 is connected to the upper end of the driving member 40, and one end of the flexible rope 60 passes around the first pulley 50 and is connected to the upper side of the lifting platform 30.

[0038] It should be noted that the base frame 10 is a supporting member with the lifting mechanism at the bottom. The structure of the base frame 10 can be designed in a variety of ways. In some embodiments, the base frame 10 can be a strip-shaped base frame 10 extending in a curve.

[0039] The first base 20 is a mounting base for mounting the first pulley 50 and the like. The first base 20 may be in the shape of a plate, but is not limited to being in the shape of a plate. The first base 20 is disposed on the upper side of the base frame 10 and is spaced apart from the base frame 10. The first base 20 may be connected to the base frame 10 through other components and fixed relative to the base frame 10 so that the first base 20 is stably mounted in a position and state relative to the base frame 10. Figure 1As shown, in some embodiments, the lifting mechanism further includes a support frame 120, the support frame 120 extends from the base frame 10 to the first base 20, the support frame 120 is fixedly connected to the base frame 10, the first base 20 is fixedly connected to the support frame 120, and the first base 20 can be fixed relative to the base frame 10 via the support frame 120. Among them, at least one support frame 120 can be provided, for example, two support frames 120 can be provided, and the two support frames 120 are respectively arranged on the left and right sides of the first base 20.

[0040] The lifting platform 30 is a component used to lift or adjust the height of an object. The lifting platform 30 can directly carry an object through its table top, or a shelf can be set up on its upper side to carry an object. The lifting platform 30 is arranged between the first base 20 and the base frame 10, and has the freedom to move up and down.

[0041] The lower end of the driving member 40 is mounted on the base frame 10, so that the lower end of the driving member 40 is stably mounted relative to the base frame 10 in the up-down direction. The lower end of the driving member 40 can be detachably connected or fixedly connected to the base frame 10, so that the lower end of the driving member 40 is fixed relative to the base frame 10 (i.e., restricted from moving relative to the base frame 10); or, the lower end of the driving member 40 can be rotatably mounted on the base frame 10.

[0042] The upper end of the driving member 40 can be raised and lowered relative to the lower end thereof. The driving member 40 can cause the lifting platform 30 to move up and down by lifting the upper end of the driving member 40 relative to the lower end of the driving member 40. The driving member 40 can be, but is not limited to, an electric push rod, a motor, a cylinder, etc.

[0043] The first pulley 50 is installed on the lower side of the first base 20, and the central axis L1 of the first pulley 50 intersects (e.g., is perpendicular to) the up-down direction. The installation position of the first pulley 50 on the first base 20 can be set as required, for example, the first pulley 50 can be staggered with the upper end of the driving member 40 along the up-down direction, etc.

[0044] The flexible rope 60 is connected to the upper end of the driving member 40, so that the upper end of the driving member 40 can drive the part of the flexible rope 60 connected thereto to move up and down.

[0045] One end of the flexible rope 60 passes around the first pulley 50, so as to change the routing direction of the flexible rope 60 via the first pulley 50. Based on this, the flexible rope 60 can have a first section 61 extending upward from the upper end of the driving member 40 to the first pulley 50, and a second section 62 extending downward from the first pulley 50 to the upper side of the lifting platform 30, and the second section 62 is arranged at an angle to the first section 61. The end of the flexible rope 60 passing around the first pulley 50 is connected to the upper side of the lifting platform 30, that is, the end of the second section 62 away from the first section 61 is connected to the upper side of the lifting platform 30, and the connection between the flexible rope 60 and the lifting platform 30 can be, but not limited to, a lock connection, a hook connection, a binding connection, etc.

[0046] In summary, the lifting mechanism provided in the embodiment of the present application can make the upper end of the driving member 40 rise relative to the lower end thereof, so as to drive the portion of the flexible rope 60 connected to it to rise via the upper end of the driving member 40, thereby shortening the portion of the flexible rope 60 extending upward from the upper end of the driving member 40 to the first pulley 50 (i.e., the first section 61), and lengthening the portion of the flexible rope 60 extending downward from the first pulley 50 to the upper side of the lifting platform 30 (i.e., the second section 62), thereby combining with the gravity to cause the lifting platform 30 to descend. Conversely, the upper end of the driving member 40 can be lowered relative to the lower end thereof, so as to drive the portion of the flexible rope 60 connected to it to descend via the upper end of the driving member 40, thereby lengthening the portion of the flexible rope 60 extending upward from the upper end of the driving member 40 to the first pulley 50 (i.e., the first section 61), and shortening the portion of the flexible rope 60 extending downward from the first pulley 50 to the upper side of the lifting platform 30 (i.e., the second section 62), thereby causing the lifting platform 30 to ascend. Thus, the lifting mechanism provided in this embodiment can drive the lifting platform 30 to move up and down through the driving member 40 via the flexible rope 60, and the structure is simplified and the operation is convenient. In addition, during the lifting process of the lifting platform 30, the flexible rope 60 can play a buffering role, reduce the movement impact force of the lifting platform 30, reduce friction, vibration and noise, thereby improving the stability of the lifting platform 30 during the lifting process, and improving the performance, reliability and user experience of the lifting mechanism.

[0047] See also Figure 1 , Figure 2 In some embodiments of the present application, the lifting mechanism further includes a second pulley 70 and a third pulley 80, the second pulley 70 is mounted on the upper end of the driving member 40, the third pulley 80 is mounted on the lower side of the first base 20, and the third pulley 80 and the first pulley 50 are arranged at intervals in the left-right direction. The central axis L1 of the first pulley 50, the central axis L2 of the second pulley 70, and the central axis L3 of the third pulley 80 are all extended in the front-back direction. The flexible rope 60 is sequentially wound around the first pulley 50, the second pulley 70, and the third pulley 80, and the opposite ends of the flexible rope 60 are connected to the upper side of the lifting platform 30.

[0048] It should be noted that the second pulley 70 is mounted on the upper end of the driving member 40 , and the center axis L2 of the second pulley 70 is extended along the front-rear direction.

[0049] The third pulley 80 and the first pulley 50 are both installed on the lower side of the first base 20 and are arranged at intervals in the left-right direction. The third pulley 80 and the first pulley 50 can be respectively arranged on the left and right sides of the first pulley 50; or, one of the third pulley 80 and the first pulley 50 can be aligned with the first pulley 50 up and down, and the other one of the third pulley 80 and the first pulley 50 can be arranged on the left or right side of the first pulley 50. The central axis L2 of the second pulley 70 extends in the front-to-back direction, and the central axis L3 of the third pulley 80 extends in the front-to-back direction.

[0050] Based on this, the flexible rope 60 can sequentially pass between the first pulley 50 and the first base 20, between the second pulley 70 and the driving member 40, and between the third pulley 80 and the first base 20, so that the flexible rope 60 has: a first section 61 extending upward from the second pulley 70 to the first pulley 50, a second section 62 extending downward from the first pulley 50 to the upper side of the lifting platform 30, a third section 63 extending upward from the second pulley 70 to the third pulley 80, and a fourth section 64 extending downward from the third pulley 80 to the upper side of the lifting platform 30. The fourth section 64 and the third section 63 are arranged at an angle, the third section 63 and the first section 61 are arranged at an angle, and the first section 61 and the second section 62 are arranged at an angle. The flexible rope 60 is in an M-shaped shape.

[0051] The opposite ends of the flexible rope 60 are connected to the upper side of the lifting platform 30, that is, the end of the second section 62 away from the first section 61 is connected to the upper side of the lifting platform 30, and the end of the fourth section 64 away from the third section 63 is connected to the upper side of the lifting platform 30. The connection between the flexible rope 60 and the lifting platform 30 may be, but not limited to, a lock connection, a hook connection, a binding connection, etc. The two connection points between the flexible rope 60 and the lifting platform 30 may be respectively arranged on the left and right sides of the lifting platform 30; or, one of the connection points between the flexible rope 60 and the lifting platform 30 may be arranged in the middle of the lifting platform 30, and the other connection point may be arranged on the left or right side of the lifting platform 30.

[0052] By adopting the above scheme, the lifting mechanism can make the upper end of the driving member 40 rise relative to its lower end, so as to drive the second pulley 70 to rise via the upper end of the driving member 40, thereby shortening the portion of the flexible rope 60 extending upward from the second pulley 70 to the first pulley 50 (i.e., the first section 61), and shortening the portion of the flexible rope 60 extending upward from the second pulley 70 to the third pulley 80 (i.e., the third section 63), thereby increasing the portion of the flexible rope 60 extending downward from the first pulley 50 to the upper side of the lifting platform 30 (i.e., the second section 62), and increasing the portion of the flexible rope 60 extending downward from the third pulley 80 to the upper side of the lifting platform 30 (i.e., the fourth section 64), thereby combining with the effect of gravity to cause the lifting platform 30 to descend.

[0053] On the contrary, the lifting mechanism can drive the second pulley 70 to descend via the upper end of the driving member 40 by lowering the upper end of the driving member 40 relative to its lower end, thereby causing the portion of the flexible rope 60 extending upward from the second pulley 70 to the first pulley 50 (i.e., the first section 61) to increase, and causing the portion of the flexible rope 60 extending upward from the second pulley 70 to the third pulley 80 (i.e., the third section 63) to increase, thereby causing the portion of the flexible rope 60 extending downward from the first pulley 50 to the upper side of the lifting platform 30 (i.e., the second section 62) to shorten, and causing the portion of the flexible rope 60 extending downward from the third pulley 80 to the upper side of the lifting platform 30 (i.e., the fourth section 64) to shorten, thereby causing the lifting platform 30 to rise.

[0054] Thus, the lifting mechanism can drive the lifting platform 30 to move up and down through the driving member 40 and the M-shaped flexible rope 60, which has a simplified structure and convenient operation. In addition, since both opposite ends of the flexible rope 60 are connected to the upper side of the lifting platform 30, the connection points between the flexible rope 60 and the lifting platform 30 can be increased, the supporting points of the flexible rope 60 on the lifting platform 30 can be increased, the load can be dispersed, and the concentration of the pulling force of the flexible rope 60 on the lifting platform 30 can be reduced, thereby improving the carrying capacity of the lifting platform 30 and improving the stability of the lifting platform 30 during the lifting process. Furthermore, based on the arrangement of the first pulley 50, the second pulley 70 and the third pulley 80, the friction and resistance of the flexible rope 60 during the sliding process can be greatly reduced, the jamming phenomenon of the flexible rope 60 can be reduced, and the flexible rope 60 can be convenient for smoothly driving the lifting platform 30 to rise and fall. Moreover, during the lifting and falling process of the lifting platform 30, the flexible rope 60 can play a buffering role, reduce the movement impact force of the lifting platform 30, reduce friction, vibration and noise, thereby improving the stability and smoothness of the lifting platform 30 during the lifting and falling process.

[0055] Of course, in other embodiments, the lifting mechanism may be provided with pulleys according to the routing requirements of the flexible rope 60. For example, the lifting mechanism may be provided with only the first pulley 50, one end of the flexible rope 60 may be fixedly connected to the upper end of the driving member 40, and the other end of the flexible rope 60 may pass around the first pulley 50 and be connected to the upper side of the lifting platform 30.

[0056] See also Figure 1 , Figure 2 In some embodiments of the present application, the third pulley 80 and the first pulley 50 are symmetrically arranged on the left and right sides of the second pulley 70.

[0057] It should be noted that the third pulley 80 and the first pulley 50 are both installed on the lower side of the first base 20 and are arranged at intervals in the left-right direction. The third pulley 80 and the first pulley 50 are respectively arranged on the left and right sides of the second pulley 70, and the third pulley 80 and the first pulley 50 are symmetrically distributed about the second pulley 70. That is, in the left-right direction, the spacing from the third pulley 80 to the second pulley 70 is substantially equal to the spacing from the first pulley 50 to the second pulley 70.

[0058] By adopting the above solution, the third pulley 80 and the first pulley 50 are symmetrically arranged on the left and right sides of the second pulley 70, so that the layout of the first pulley 50, the second pulley 70 and the third pulley 80 can be balanced and optimized. Based on this, the portion of the flexible rope 60 extending upward from the second pulley 70 to the first pulley 50 (i.e., the first section 61) and the portion of the flexible rope 60 extending upward from the second pulley 70 to the third pulley 80 (i.e., the third section 63) can be basically symmetrically distributed, so that the portion of the flexible rope 60 extending downward from the first pulley 50 to the upper side of the lifting platform 30 (i.e., the second section 62) and the portion of the flexible rope 60 extending downward from the third pulley 80 to the upper side of the lifting platform 30 (i.e., the fourth section 64) can be basically symmetrically distributed. As a result, it can be beneficial to balance the distribution of power and tension of the flexible rope 60, and it can be convenient for the flexible rope 60 to evenly apply tension and pulling force to the lifting platform 30; furthermore, it can reduce the risk of the flexible rope 60 generating lateral force and swinging, twisting, entanglement and the like during sliding, and can reduce the jamming of the flexible rope 60, and can improve the smoothness of sliding of the flexible rope 60, and can facilitate the flexible rope 60 to smoothly drive the lifting platform 30 to rise and fall; thereby, the stability of the lifting platform 30 during the lifting process can be improved, and the operating stability and reliability of the lifting mechanism can be improved.

[0059] Of course, in other embodiments, the third pulley 80 and the first pulley 50 can be disposed on the left and right sides of the second pulley 70, but in an asymmetrical distribution. Alternatively, one of the third pulley 80 and the first pulley 50 can be aligned with the first pulley 50 up and down, and the other one of the third pulley 80 and the first pulley 50 can be disposed on the left or right side of the first pulley 50.

[0060] See also Figure 1 , Figure 2 In some embodiments of the present application, two connection points between the flexible rope 60 and the lifting platform 30 are symmetrically arranged on the left and right sides of the lifting platform 30.

[0061] It should be noted that the two opposite ends of the flexible rope 60 are connected to the upper side of the lifting platform 30. The two connection points between the flexible rope 60 and the lifting platform 30 are respectively arranged on the left and right sides of the lifting platform 30 and are symmetrically distributed about the center line of the lifting platform 30 perpendicular to the left and right directions.

[0062] By adopting the above scheme, by symmetrically arranging the two connection points between the flexible rope 60 and the lifting platform 30 on the left and right sides of the lifting platform 30, the two supporting points of the flexible rope 60 on the lifting platform 30 can be symmetrically distributed, and the pulling force of the flexible rope 60 on the lifting platform 30 can be evenly distributed on the left and right sides of the lifting platform 30, so that the lifting platform 30 can be maintained stable and the stability of the lifting platform 30 during the lifting process can be improved.

[0063] This embodiment is particularly suitable for application in combination with the previous embodiment, that is, suitable for application in combination with the embodiment in which "the third pulley 80 and the first pulley 50 are symmetrically arranged on the left and right sides of the second pulley 70".

[0064] Of course, in other embodiments, the two connection points between the flexible rope 60 and the lifting platform 30 can be respectively arranged on the left and right sides of the lifting platform 30, but are asymmetrically distributed. Alternatively, one of the connection points between the flexible rope 60 and the lifting platform 30 can be arranged in the middle of the lifting platform 30, and the other connection point can be arranged on the left or right side of the lifting platform 30.

[0065] See also Figure 1 , Figure 2 In some embodiments of the present application, the flexible rope 60 is entirely in the same plane.

[0066] It should be noted that the flexible rope 60 as a whole (including the first section 61, the second section 62, etc.) can be placed in the same plane by, but not limited to, precisely controlling the manufacturing and assembly errors of the components of the lifting mechanism (especially the flexible rope 60). This plane can be parallel to the vertical plane or be arranged at a small angle to the vertical plane.

[0067] By adopting the above scheme, by making the flexible rope 60 as a whole in the same plane, the connection points of the flexible rope 60 and the driving member 40, the connection points of the flexible rope 60 and the lifting platform 30, and the various segments of the flexible rope 60 can be in the same plane. Based on this, the tension and pulling force of the flexible rope 60 can be along the flexible rope 60 and in the same plane, which can reduce the force distribution of the tension and pulling force of the flexible rope 60 in different planes, reduce the risk of the flexible rope 60 generating lateral force and swinging, twisting, entanglement, etc. during the sliding process, reduce the resistance and friction of the flexible rope 60, reduce the jamming phenomenon of the flexible rope 60, improve the smoothness of the sliding of the flexible rope 60 in the same plane, and facilitate the flexible rope 60 to smoothly drive the lifting platform 30 to rise and fall, thereby improving the stability of the lifting platform 30 during the lifting process, and improving the operation stability and use reliability of the lifting mechanism.

[0068] See also Figure 1 , Figure 2 In some embodiments of the present application, the lower end of the driving member 40 is rotatably mounted on the base frame 10 , and the rotation axis L4 of the driving member 40 is perpendicular to the center axis L1 of the first pulley 50 .

[0069] It should be noted that the lower end of the driving member 40 is rotatably mounted on the base frame 10, so that the driving member 40 has a degree of rotational freedom. The rotation axis L4 of the driving member 40 is perpendicular to the center axis L1 of the first pulley 50, so that the driving member 40 can swing relative to the base frame 10 along the center axis L1 of the first pulley 50.

[0070] As shown in the figure, in some embodiments, the central axis L1 of the first pulley 50 extends along the front-to-back direction, and the rotation axis L4 of the driving member 40 is perpendicular to the front-to-back direction (ie, parallel to the left-to-right direction), so that the driving member 40 can swing back and forth relative to the base frame 10.

[0071] Of course, in other embodiments, the central axis L1 of the first pulley 50 may be extended in other directions. For example, the central axis L1 of the first pulley 50 may be extended in the left-right direction, and the rotation axis L4 of the driving member 40 is perpendicular to the left-right direction (i.e., parallel to the front-back direction), so that the driving member 40 can swing left-right relative to the base frame 10.

[0072] By adopting the above solution, by rotating the lower end of the driving member 40 to be mounted on the base frame 10, and making the rotation axis L4 of the driving member 40 perpendicular to the central axis L1 of the first pulley 50, the driving member 40 can be swung relative to the base frame 10 along the central axis L1 of the first pulley 50. Based on this, under the tension of the flexible rope 60, the driving member 40 can be adaptively swung relative to the base frame 10 along the central axis L1 of the first pulley 50, and automatically and easily make the flexible rope 60 as a whole in the same plane, that is, make the connection point between the flexible rope 60 and the driving member 40, the connection point between the flexible rope 60 and the lifting platform 30, and each segment of the flexible rope 60 all in the same plane. In this way, the tension and pulling force of the flexible rope 60 can be along the flexible rope 60 and in the same plane, which can reduce the force components of the tension and pulling force of the flexible rope 60 in different planes, reduce the risk of the flexible rope 60 generating lateral force and swinging, twisting, entanglement and the like during sliding, reduce the resistance and friction of the flexible rope 60, reduce the jamming of the flexible rope 60, improve the smoothness of the sliding of the flexible rope 60 in the same plane, and facilitate the flexible rope 60 to smoothly drive the lifting platform 30 to rise and fall, thereby improving the stability of the lifting platform 30 during the lifting process, and improving the operating stability and reliability of the lifting mechanism.

[0073] Furthermore, since the driving member 40 can swing adaptively and automatically and easily cause the flexible rope 60 to be in the same plane as a whole, the requirements for manufacturing errors and assembly errors of the various components of the lifting mechanism (especially the flexible rope 60) can be reduced, thereby improving the processing convenience and assembly convenience of the lifting mechanism.

[0074] Of course, in other embodiments, the lower end of the driving member 40 may be fixed relative to the base frame 10 , that is, the lower end of the driving member 40 may be detachably connected or fixedly connected to the base frame 10 and restricted from moving relative to the base frame 10 .

[0075] See also Figure 1 , Figure 2 , Figure 3 In some embodiments of the present application, the lifting mechanism also includes a second base 90, which is arranged between the lifting platform 30 and the base frame 10 and fixed relative to the base frame 10. The second base 90 is provided with a constraint hole 91 that passes through the up and down directions. The upper end of the driving member 40 is passed through the constraint hole 91, and the constraint hole 91 constrains the rotation range of the driving member 40.

[0076] It should be noted that the second base 90 is a component used to constrain the rotation range of the driving member 40. The second base 90 is disposed between the lifting platform 30 and the base frame 10, and is disposed corresponding to the upper end of the driving member 40. The second base 90 can be connected to the base frame 10 through other components and fixed relative to the base frame 10, so that the second base 90 is installed in a stable position and state relative to the base frame 10. Figure 1 As shown, in some embodiments, the second base 90 is fixedly connected to the support frame 120 , and the second base 90 can be fixed relative to the base frame 10 via the support frame 120 .

[0077] The second base 90 is provided with a constraint hole 91, which passes through the second base 90 in the up-down direction. The upper end of the driving member 40 is penetrated by the constraint hole 91. When the lower end of the driving member 40 swings relative to the base frame 10, the upper end of the driving member 40 will swing in the constraint hole 91, so the constraint hole 91 can constrain the rotation range of the upper end of the driving member 40, that is, the constraint hole 91 can constrain the rotation range of the driving member 40.

[0078] By adopting the above scheme, when the lower end of the driving member 40 is rotatably mounted on the base frame 10, by penetrating the constraint hole 91 in the second base 90 and allowing the upper end of the driving member 40 to pass through the constraint hole 91, the rotation amplitude of the upper end of the driving member 40 can be constrained through the constraint hole 91 during the swinging of the lower end of the driving member 40 relative to the base frame 10, thereby constraining the rotation amplitude of the driving member 40. Based on this, the swinging of the driving member 40 relative to the base frame 10 can be controlled within a certain amplitude range, and the risk of the flexible rope 60 being loosened, twisted, or interfering with other components due to excessive swinging of the driving member 40 can be reduced, which can help to make the connection point between the flexible rope 60 and the driving member 40, the connection point between the flexible rope 60 and the lifting platform 30, and each segment of the flexible rope 60 accurately in the same plane, thereby improving the smoothness of the sliding of the flexible rope 60 in the same plane, improving the stability of the lifting platform 30 during the lifting process, and improving the operation stability and use reliability of the lifting mechanism.

[0079] Of course, in other embodiments, other methods may be used to constrain the rotation range of the driving member 40. For example, a rotation limiting structure may be designed near the lower end of the driving member 40.

[0080] See also Figure 1 , Figure 2 , Figure 3 In some embodiments of the present application, the second base 90 includes a first plate 92, a second plate 93 and a restraining member 94. The first plate 92 is horizontally arranged and fixed relative to the base frame 10. The second plate 93 is vertically connected to the first plate 92. The first plate 92 is provided with a first hole 921. The first hole 921 penetrates the first plate 92 in the up and down direction and extends to the second plate 93 in a direction close to the second plate 93. The second plate 93 is provided with a second hole 931. The second hole 931 penetrates the second plate 93 in the thickness direction of the second plate 93 and is connected to the first hole 921 in a direction close to the first plate 92. The restraining member 94 is detachably connected to the second plate 93 and inserted into the first hole 921. The restraining member 94 limits the first hole 921 to the restraining hole 91.

[0081] It should be noted that the first plate 92 is arranged horizontally, that is, the first plate 92 is parallel to the horizontal plane. The first plate 92 is fixed relative to the base frame 10, so that the second base 90 is installed in a stable position and state relative to the base frame 10. Figure 1 , Figure 3 As shown, in some embodiments, the first plate 92 is fixedly connected to the support frame 120 , so that the second base 90 can be fixed relative to the base frame 10 via the support frame 120 .

[0082] The second plate 93 is vertically connected to the first plate 92. Figure 1 , Figure 3As shown, in some embodiments, the second plate 93 is vertically connected to the side of the first plate 92 away from the support frame 120. The second plate 93 and the first plate 92 can be connected in one piece or in a separate piece.

[0083] The first plate 92 is provided with a first hole 921, which passes through the first plate 92 in the up-down direction. The second plate 93 is provided with a second hole 931, which passes through the second plate 93 in the thickness direction of the second plate 93. The first hole 921 also extends in a direction close to the second plate 93, and the second hole 931 also extends in a direction close to the first plate 92. The second hole 931 is connected to the first hole 921, and the second hole 931 and the first hole 921 together form a hollow portion quasi-L shape.

[0084] The restraining member 94 is detachably connected to the side of the second plate 93 facing away from the first plate 92. The detachable connection method of the restraining member 94 and the second plate 93 can be, but is not limited to, bolt connection. A part of the restraining member 94 is inserted into the first hole 921. The restraining member 94 limits the first hole 921 to the restraining hole 91, that is, the part of the first hole 921 except the space occupied by the restraining member 94 can form the restraining hole 91.

[0085] By adopting the above scheme, the second base 90 can form a hollow part of L-shape through the first hole 921 provided by the first plate 92 and the second hole 931 provided by the second plate 93 and connected with the first hole 921, so that when the restraining member 94 is disassembled from the second plate 93, the upper end of the driving member 40 can be easily, conveniently and quickly disassembled from the first hole 921. In the case where the upper end of the driving member 40 is inserted into the first hole 921, the second base 90 can be installed on the second plate 93 by the restraining member 94, so that the first hole 921 can be limited to the restraining hole 91 through the part of the restraining member 94 inserted into the first hole 921, so as to facilitate the restraining of the rotation range of the upper end of the driving member 40 through the restraining hole 91, thereby restraining the rotation range of the driving member 40. In this way, the assembly convenience and assembly efficiency between the second base 90 and the driving member 40 can be improved, and the restraining effect of the second base 90 on the rotation range of the driving member 40 can be improved.

[0086] Furthermore, since the restraint member 94 is detachably connected to the second plate member 93, the convenience of replacing the restraint member 94 can be improved. In particular, the restraint member 94 can be replaced as needed according to the constraint requirements of the rotation range of the driving member 40 to adjust the size of the portion of the restraint member 94 inserted in the first hole 921, thereby adjusting the size of the restraint hole 91.

[0087] like Figure 1 , Figure 3As shown, in some embodiments, the second base 90 also includes a third plate 95, which is vertically connected to the upper side of the second plate 93, and the third plate 95 is arranged parallel to and spaced apart from the first plate 92. The third plate 95 and the first plate 92 are both fixedly connected to the support frame 120 to enhance the stability of the connection between the second base 90 and the support frame 120, thereby improving the stability of the installation position and installation state of the second base 90.

[0088] See also Figure 1 , Figure 3 In some embodiments of the present application, the lifting mechanism also includes a guide assembly 100, which includes a guide rod 101 and a guide tube 102 sleeved on the outer periphery of the guide rod 101, and the guide rod 101 and the guide tube 102 are both extended in the up and down directions. One of the guide rod 101 and the guide tube 102 is fixed relative to the base frame 10, and the other one is fixed to the lifting platform 30.

[0089] It should be noted that the guide assembly 100 is a assembly used to guide and constrain the moving direction, moving path, and moving stroke of the lifting platform 30. The guide assembly 100 is provided with at least one. Figure 3 As shown, in some embodiments, two guide assemblies 100 are provided, and the two guide assemblies 100 are respectively arranged on the left and right sides of the lifting platform 30 .

[0090] It should also be noted that the guide assembly 100 includes a guide rod 101 and at least one guide tube 102. The guide rod 101 and the guide tube 102 are both extended in the up-down direction. The guide tube 102 is sleeved on the outer periphery of the guide rod 101, and the guide tube 102 and the guide rod 101 can move up and down relative to each other. Figure 3 As shown, in some embodiments, two guide tubes 102 are sleeved on the outer circumference of each guide rod 101 .

[0091] like Figure 3 As shown, in some embodiments, the guide rod 101 is fixed to the lifting platform 30, the guide tube 102 is fixed relative to the base frame 10, and the up and down movement of the guide rod 101 relative to the guide tube 102 can guide and constrain the moving direction, moving path, and moving stroke of the lifting platform 30, thereby improving the stability of the lifting and lowering movement of the lifting platform 30. The guide tube 102 can be fixed relative to the base frame 10 by, but not limited to, being fixedly connected to the second base 90.

[0092] In other embodiments, the guide tube 102 is fixed to the lifting platform 30, and the guide rod 101 is fixed relative to the base frame 10. The up and down movement of the guide tube 102 relative to the guide rod 101 can guide and constrain the moving direction, moving path, and moving stroke of the lifting platform 30, thereby improving the stability of the lifting and lowering movement of the lifting platform 30.

[0093] By adopting the above scheme, the moving direction, moving path and moving stroke of the lifting platform 30 can be guided and constrained through the relative up and down movement between the guide tube 102 and the guide rod 101, so as to enable the lifting platform 30 to be lifted and lowered smoothly in the up and down directions, thereby ensuring the lifting smoothness and stability of the lifting platform 30 during the lifting process.

[0094] See also Figure 1 In some embodiments of the present application, a moving wheel 110 is provided on the lower side of the base frame 10 .

[0095] It should be noted that a moving wheel 110 is provided on the lower side of the base frame 10. One or more moving wheels 110 may be provided. The moving wheel 110 may be, but is not limited to, a universal wheel.

[0096] By adopting the above solution, by setting the moving wheel 110 on the lower side of the base frame 10, it is convenient for the operator to push the lifting mechanism to move as a whole, thereby improving the operational convenience of moving and positioning the lifting mechanism, and improving the performance, applicability and flexibility of the lifting mechanism.

[0097] See also Figure 1 In some embodiments of the present application, the support frame 120 is provided with an armrest 121, and the armrest 121 can be convenient for the operator to hold so that the operator can push the lifting mechanism to move as a whole. Of course, in other embodiments, the armrest 121 can be omitted, and the operator can directly hold the support frame 120 and push the lifting mechanism to move as a whole.

[0098] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A lifting mechanism, characterized in that: The lifting mechanism comprises: Scaffolding; A first base is spaced apart from the upper side of the base frame and fixed relative to the base frame; A lifting platform is liftably disposed between the first base and the base frame; A driving member, the lower end of which is mounted on the base frame, and the upper end of which can be raised and lowered relative to the lower end; a first pulley mounted on the lower side of the first base; A flexible rope is connected to the upper end of the driving member, and one end of the flexible rope passes around the first pulley and is connected to the upper side of the lifting platform.

2. The lifting mechanism according to claim 1, characterized in that: The lifting mechanism further includes a second pulley and a third pulley, wherein the second pulley is mounted on the upper end of the driving member, and the third pulley is mounted on the lower side of the first base, and the third pulley and the first pulley are arranged at intervals in the left-right direction; the central axes of the first pulley, the second pulley and the third pulley are all extended in the front-back direction; The flexible rope is sequentially wound around the first pulley, the second pulley and the third pulley, and opposite ends of the flexible rope are connected to the upper side of the lifting platform.

3. The lifting mechanism according to claim 2, characterized in that: The third pulley is symmetrically arranged on the left and right sides of the second pulley with respect to the first pulley.

4. The lifting mechanism according to claim 2, characterized in that: The two connection points between the flexible rope and the lifting platform are symmetrically arranged on the left and right sides of the lifting platform.

5. The lifting mechanism according to claim 1, characterized in that: The flexible rope is entirely in the same plane.

6. The lifting mechanism according to claim 1, characterized in that: The lower end of the driving member is rotatably mounted on the base frame, and the rotation axis of the driving member is perpendicular to the center axis of the first pulley.

7. The lifting mechanism according to claim 6, characterized in that: The lifting mechanism also includes a second base, which is arranged between the lifting platform and the base frame and fixed relative to the base frame. The second base is provided with a constraint hole that passes through in the up and down directions. The upper end of the driving member is passed through the constraint hole, and the constraint hole constrains the rotation range of the driving member.

8. The lifting mechanism according to claim 7, characterized in that: The second base includes a first plate, a second plate and a restraining member, the first plate is horizontally arranged and fixed relative to the base frame, the second plate is vertically connected to the first plate, the first plate is provided with a first hole, the first hole penetrates the first plate in the up and down direction, and extends to the second plate in the direction close to the second plate, the second plate is provided with a second hole, the second hole penetrates the second plate in the thickness direction of the second plate, and is connected to the first hole in the direction close to the first plate, the restraining member is detachably connected to the second plate and inserted into the first hole, and the restraining member limits the first hole to the restraining hole.

9. The lifting mechanism according to any one of claims 1 to 8, characterized in that: The lifting mechanism also includes a guide assembly, which includes a guide rod and a guide tube sleeved on the outer circumference of the guide rod, the guide rod and the guide tube are both extended in the up and down directions, one of the guide rod and the guide tube is fixed relative to the base frame, and the other one is fixed to the lifting platform.

10. The lifting mechanism according to any one of claims 1 to 8, characterized in that: The lower side of the base frame is provided with moving wheels.

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