Lead screw lifting mechanism

Abstract

The utility model relates to a lead screw lifting mechanism, and belongs to the technical field of automatic lifting equipment. The device comprises a support assembly, a driving assembly, a guiding assembly and a bearing assembly, the driving assembly comprises a lead screw, a nut, a transmission part and a motor, the two ends of the lead screw are rotationally connected with the upper end and the lower end of the support assembly respectively, the lead screw is arranged on the first side of the support assembly, the nut is in threaded connection with the lead screw, and the motor is arranged on the second side of the support assembly. The transmission part is in transmission connection with the motor and the lead screw, so that the motor drives the lead screw to rotate through the transmission part; the guide assembly comprises a guide rail and a sliding block, the guide rail is arranged on the first side of the support assembly, and the sliding block is slidably connected with the guide rail and connected with the nut. The bearing assembly comprises a bearing table, the bearing table is arranged on the first side of the support assembly, one end of the bearing table is connected with the sliding block and the nut, and the nut drives the bearing table to reciprocate in the axis direction of the lead screw. The effect of improving the use stability of the lead screw lifting mechanism is achieved.

Description

Technical Field

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

[0002] With the rapid development of mechanical automation, automation equipment has been widely used in various industries. Due to the different application scenarios of various industries, the demand for the use of various non-standard automation equipment has gradually emerged.

[0003] There are many kinds of lifting mechanisms in non-standard automation equipment, including screw lifting, synchronous belt lifting, chain lifting, cylinder lifting and wire motor lifting. Among them, the screw lifting mechanism is a common mechanism in automation equipment, which has the characteristics of high precision during lifting. Figure 1 As shown, in the current related technology, the mechanism drives the screw 200' to rotate by driving the motor 100', so that the bearing platform 300' screwed on the screw 200' can be raised and lowered, and the bearing platform 300' is relatively slidable on the outer periphery of the guide optical axis 400' to achieve a guiding effect.

[0004] However, if Figure 1 The screw lifting mechanism shown is easily deformed during actual use due to the eccentric force center of the screw 200', which can easily cause the guide light axis 400' to leave sliding marks after long-term use, increase the friction of the guide light axis 400', generate noise, and affect the stability and service life.

[0005] In the above-mentioned related technologies, there is a defect that the screw lifting mechanism is greatly worn after long-term use, which affects the stability of use. Utility Model Content

[0006] In order to improve the operating stability of a screw lifting mechanism, the present application provides a screw lifting mechanism.

[0007] The screw lifting mechanism provided in this application adopts the following technical solution:

[0008] A screw lifting mechanism comprises: a bracket assembly; a driving assembly, comprising a screw, a nut, a transmission member and a motor, wherein two ends of the screw are rotatably connected to the upper end and the lower end of the bracket assembly, so that the screw is arranged on a first side of the bracket assembly, the nut is screwed on the screw, and the motor is arranged on a second side of the bracket assembly, and the transmission member transmission-connects the motor and the screw, so that the motor drives the screw to rotate through the transmission member; a guide assembly, comprising a guide rail and a slider, the guide rail is arranged on the first side of the bracket assembly, the slider is slidably connected to the guide rail, and the slider is connected to the nut; a bearing assembly, comprising a bearing platform, the bearing platform is arranged on the first side of the bracket assembly, and one end of the bearing platform is connected to the slider and the nut, so that the nut drives the bearing platform to reciprocate along the axial direction of the screw.

[0009] By adopting the above technical solution, the bracket assembly provides an overall supporting effect, and the motor drives the lead screw to rotate through the transmission member, so that the nut screwed on the lead screw can move; the setting of the guide rail and the slider can, on the one hand, play a guiding role, and on the other hand, through the connection between the slider and the nut, the rotation of the nut is restricted, so that the rotation of the lead screw can be converted into linear movement of the nut, and the bearing platform is connected to the slider and the nut, so that the bearing platform is driven to be raised and lowered through the synchronous linear movement of the slider and the nut; the guiding effect is achieved by the cooperation of the slider and the guide rail, and compared with the form of being sleeved on the outer periphery of the guide optical axis, the problem of scratching the guide optical axis due to long-term use and affecting the stability of use can be avoided.

[0010] Optionally, the supporting assembly further includes a first connecting member, a second connecting member and a telescopic member, the lower end of the first connecting member is hinged to the lower end of the bracket assembly, the upper end of the second connecting member is hinged to the lower side of the supporting platform, the upper end of the first connecting member is hinged to the lower end of the second connecting member, the fixed end of the telescopic member is connected to the bracket assembly, the telescopic end of the telescopic member is movably connected to the first connecting member, and the extension and retraction of the telescopic member drives the upper end of the first connecting member to move, so that the second connecting member is used to support the supporting platform.

[0011] By adopting the above technical solution, the first connecting member and the second connecting member are connected, and the lower end of the first connecting member is connected to the bracket assembly, and the upper end of the second connecting member is connected to the supporting platform. Through the cooperation of the motor and the telescopic member, the supporting platform is raised and lowered while the telescopic member is extended and retracted, so that the first connecting member and the second connecting member can provide support for the supporting platform, which helps to improve the stability of the mechanism.

[0012] Optionally, the transmission member includes a first synchronous wheel, a second synchronous wheel and a belt, the first synchronous wheel is connected to the upper end of the screw, the second synchronous wheel is connected to the output end of the motor, and the belt is wound around the first synchronous wheel and the second synchronous wheel, so that the motor drives the screw to rotate.

[0013] By adopting the above technical solution, the motor is connected to the second synchronous wheel, the screw is connected to the first synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected by belt transmission, so that the power output by the motor can be transmitted to the screw to drive the screw to rotate; and, through the setting of the transmission member, it is convenient to set the motor on the second side of the bracket assembly. Since the bearing platform is set on the first side of the bracket assembly, the interference of the motor on the vertical movement of the bearing platform can be reduced, and the space on both sides of the bracket assembly can be fully utilized.

[0014] Optionally, the driving assembly further comprises an adjusting plate, wherein the adjusting plate is arranged at the upper end of the bracket assembly, and the motor is mounted on the adjusting plate, so that the horizontal distance between the motor and the lead screw is adjustable.

[0015] By adopting the above technical solution, the setting of the adjustment plate provides horizontal movement space for the motor, so that the belt can be tensioned through the horizontal movement of the motor; at the same time, the motor can be moved horizontally in a direction away from the bracket assembly, reducing the impact of the workpiece carried on the load platform on the motor, thereby ensuring stable power output during lifting.

[0016] Optionally, the drive assembly also includes a motor mounting plate and a tensioning member, the motor mounting plate is slidably connected to the adjustment plate, the motor is arranged on the lower side of the motor mounting plate, the lead screw is arranged at one end of the adjustment plate, one end of the tensioning member is connected to an end of the adjustment plate away from the lead screw, and the other end of the tensioning member is connected to the motor mounting plate, and the tensioning member is used to pull the motor mounting plate to tension the belt.

[0017] By adopting the above technical solution, the motor mounting plate provides an installation position for the motor, and the motor mounting plate is slidably connected to the adjustment plate, so that the motor mounting plate can move horizontally relative to the adjustment plate, and through the setting of the tensioning piece, the belt between the motor mounting plate and the screw is kept tensioned to stably realize the output of the motor power.

[0018] Optionally, it also includes a sensing component, which includes a first sensor, a second sensor and a detection piece, the guide rail is arranged on one side of the lead screw, the detection piece is arranged on the side of the slider away from the lead screw, the first sensor and the second sensor are both arranged on the first side of the bracket assembly, the first sensor is arranged below the second sensor, and the first sensor and the second sensor are used to detect the detection piece, position the detection piece, and limit the lowest position and the highest position of the slider.

[0019] By adopting the above technical solution, the detection part can move upward to be flush with the second sensor and downward to be flush with the first sensor through the up and down movement of the slider, so that the moving position of the slider can be sensed, and then the moving position of the supporting platform can be located, so as to stop the drive of the motor in time, limit its highest and lowest positions, and ensure the safety of lifting and the reliability of the mechanism operation.

[0020] Optionally, the bracket assembly includes a general mounting plate and a top plate, the general mounting plate extends in a vertical direction, the top plate is connected to an upper end of the general mounting plate, and the general mounting plate is provided with a hollow portion.

[0021] By adopting the above technical solution, the main mounting plate provides installation positions for guide rails, sensing components, etc., and the top plate provides support for the installation of the upper end of the screw. The hollow part can reduce the weight on the one hand, and facilitate the installation of the telescopic parts on the other hand, providing space for the extension and retraction of the telescopic parts.

[0022] Optionally, the bracket assembly further includes a support member, a first end of the support member is connected to the main mounting plate, a second end of the support member is connected to the top plate, and the second end of the support member is spaced apart from the main mounting plate in a horizontal direction.

[0023] By adopting the above technical solution, since the upper end of the screw is connected to the top plate at the upper end of the bracket assembly, the support member is used to support the top plate to improve the supporting strength of the top plate, so that when the load platform is raised or lowered, the top plate and the upper end of the screw have sufficient supporting force to ensure the stability and reliability of the lifting.

[0024] Optionally, the bracket assembly is provided with an upper connecting seat and a lower connecting seat, the upper connecting seat and the lower connecting seat are respectively arranged at the upper end and the lower end of the bracket assembly, and the two ends of the lead screw are rotatably connected to the upper connecting seat and the lower connecting seat respectively.

[0025] By adopting the above technical solution, the upper connecting seat and the lower connecting seat are used to provide support for the lead screw, so that the lead screw can rotate around its own axis, thereby driving the nut to move up and down, thereby realizing the lifting and lowering of the support platform.

[0026] Optionally, the guide assembly is provided with two groups, the two groups of the guide assemblies are symmetrically arranged on both sides of the lead screw, and two sliders are provided on the same guide rail, and the two sliders are spaced apart in the vertical direction.

[0027] By adopting the above technical solution, the guiding performance can be improved by arranging guide components on both sides of the screw, and the supporting strength of the bearing platform can be improved by connecting the two sets of guide components, which helps to ensure the stable lifting and lowering of the bearing platform.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The bracket assembly provides overall support. The motor drives the lead screw to rotate through the transmission member, so that the nut screwed on the lead screw can move. The setting of the guide rail and the slider can guide on the one hand, and on the other hand, through the connection between the slider and the nut, the rotation of the nut is restricted, so that the rotation of the lead screw can be converted into the linear movement of the nut. The bearing platform is connected to the slider and the nut, so that the bearing platform is driven to move up and down through the synchronous linear movement of the slider and the nut. The guidance effect is achieved by the cooperation of the slider and the guide rail. Compared with the form of being set on the outer periphery of the guide optical axis, it can avoid the problem of scratching the guide optical axis and affecting the stability of use due to long-term use;

[0030] 2. The first connecting member is connected to the second connecting member, and the lower end of the first connecting member is connected to the bracket assembly, and the upper end of the second connecting member is connected to the bearing platform. Through the cooperation of the motor and the telescopic member, the bearing platform is lifted and lowered while the telescopic member is extended and retracted, so that the first connecting member and the second connecting member can provide support for the bearing platform, which helps to improve the stability of the mechanism;

[0031] 3. The motor is connected to the second synchronous wheel through transmission, the screw is connected to the first synchronous wheel through transmission, and the first synchronous wheel and the second synchronous wheel are connected through belt transmission, so that the power output by the motor can be transmitted to the screw to drive the screw to rotate; and, through the setting of the transmission member, it is convenient to set the motor on the second side of the bracket assembly. Since the bearing platform is set on the first side of the bracket assembly, the interference of the motor on the vertical movement of the bearing platform can be reduced, and the space on both sides of the bracket assembly can be fully utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of a screw lifting mechanism in the related art.

[0033] Figure 2 It is a schematic diagram of the screw lifting mechanism of an embodiment of the present application.

[0034] Figure 3 It is a schematic diagram of a hidden protective shell of a lead screw lifting mechanism in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 100', driving motor; 200', screw rod; 300', carrying platform; 400', guide optical axis;

[0037] 100. Workpiece;

[0038] 1. Bracket assembly; 11. General mounting plate; 111. Hollow portion; 12. Top plate; 13. Lower connecting seat; 14. Support member; 15. Upper connecting seat;

[0039] 2. Driving assembly; 21. Lead screw; 22. Screw nut; 23. Transmission member; 231. First synchronous wheel; 232. Second synchronous wheel; 24. Motor; 25. Adjustment plate; 26. Motor mounting plate;

[0040] 3. Guide assembly; 31. Guide rail; 32. Slider;

[0041] 4. Carrying assembly; 41. Carrying platform; 42. First connecting member; 43. Second connecting member; 44. Telescopic member;

[0042] 5. Sensing component; 51. First sensor; 52. Second sensor; 53. Detection element. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1 -Attached Figure 3 The present application is further described in detail. In this embodiment, if not clearly specified, "connected", "connected" and "fixed" are understood in a broad sense, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection and interaction between two elements, etc., which can be understood according to the specific circumstances. In the absence of any contrary explanation, the directional words used in this application, such as "inside" and "outside", refer to the outline of the corresponding parts themselves.

[0044] like Figure 2 and Figure 3 As shown, the embodiment of the present application discloses a screw lifting mechanism (hereinafter referred to as "mechanism"). The mechanism includes a support assembly 1, a drive assembly 2, a guide assembly 3 and a bearing assembly 4, which are used to drive a workpiece 100 to achieve lifting.

[0045] The support assembly 1 provides the function of overall support. The support assembly 1 can be fixed on the ground or a certain structure according to the use requirements, so that the driving assembly 2, the guide assembly 3 and the bearing assembly 4 can be arranged on the support assembly 1. The driving assembly 2 includes a lead screw 21, a nut 22, a transmission member 23 and a motor 24. The lead screw 21 is arranged on the first side of the support assembly 1. The two ends of the lead screw 21 are respectively rotatably connected to the upper end and the lower end of the support assembly 1. The nut 22 is screwed on the lead screw 21. The motor 24 is arranged on the second side of the support assembly 1. The transmission member 23 is connected to the motor 24 and the lead screw 21, so that the motor 24 can drive the lead screw 21 to rotate through the transmission member 23.

[0046] like Figure 2 and Figure 3As shown, the guide assembly 3 includes a guide rail 31 and a slider 32. The guide rail 31 is arranged on the first side of the bracket assembly 1, the guide rail 31 is arranged on one side of the lead screw 21, and the slider 32 is slidably connected to the guide rail 31 and can slide along the guide rail 31. The arrangement of the guide rail 31 and the slider 32 can provide a guiding effect on the one hand; on the other hand, through the connection between the slider 32 and the nut 22, the rotation of the nut 22 can be limited when the lead screw 21 rotates, so that the rotation of the lead screw 21 can be converted into a linear movement of the nut 22. The lead screw 21 and the guide rail 31 both extend in the vertical direction to achieve lifting. The guiding effect is achieved by the way that the slider 32 cooperates with the guide rail 31. Compared with the guiding form in which the guide optical axis is inserted into the bearing platform, the problem of scratching the guide optical axis after long-term use and affecting the stability of use can be avoided, the structural irrationality of the optimization mechanism is optimized, the mechanical noise is reduced, and the service life is extended. The slider 32 and the nut 22 can be connected through a connecting plate to achieve overall movement. The guide rail 31 can be connected to the bracket assembly 1 through a supporting structure so that the slider 32 can be flush with the surface of the nut 22, which is convenient for connection to the connecting plate.

[0047] The bearing assembly 4 includes a bearing platform 41 for bearing the workpiece 100. The bearing platform 41 is arranged on the first side of the bracket assembly 1. One end of the bearing platform 41 is connected to the slider 32 and the nut 22 at the same time, so that the nut 22 drives the bearing platform 41 to move back and forth along the axis direction of the lead screw 21 to achieve lifting. The bearing platform 41 can be connected to the connecting plate to realize the driving effect of the nut 22 on the bearing platform 41. The motor 24 can be a servo motor, which can drive the lead screw 21 to rotate forward and reverse so that the nut 22 can be raised or lowered; and the servo motor can improve the positioning accuracy, lifting speed and service life of the mechanism. When the mechanism is in use, the travel range of the lead screw 21 and the length of the guide rail 31 are first determined according to the lifting height of the workpiece 100, and the appropriate ball screw, linear guide and servo motor are selected according to the weight of the lifted workpiece 100. The ball screw drives the nut 22 on the ball screw to move linearly through the rotation of the servo motor, and the slider 32 on the linear guide moves simultaneously through the connection of the connecting plate. The linear guide rail can bear the pressure of the workpiece 100 and enable the ball screw to only bear the axial force given by the workpiece 100, thereby reducing the deformation of the ball screw.

[0048] like Figure 2 and Figure 3 As shown, optionally, the bracket assembly 1 includes a main mounting plate 11 and a top plate 12. The length of the main mounting plate 11 extends in the vertical direction to provide a mounting position for the guide rail 31 and the like. The top plate 12 is connected to the upper end of the main mounting plate 11, and the top plate 12 can be arranged horizontally to provide support for the installation of the upper end of the lead screw 21. The main mounting plate 11 is provided with a hollow portion 111 to reduce the overall weight.

[0049] Optionally, the bracket assembly 1 also includes a support member 14. The support member 14 can be a supporting rib, the first end of the support member 14 is connected to the main mounting plate 11, the second end of the support member 14 is connected to the top plate 12, and the second end of the support member 14 is spaced apart from the main mounting plate 11 in the horizontal direction, so that a triangular area is formed between the support member 14, the top plate 12 and the main mounting plate 11 to improve the support strength. The support member 14 can also be a triangular plate for supporting the top plate 12. Since the upper end of the lead screw 21 is connected to the top plate 12 at the upper end of the bracket assembly 1, the support member 14 can improve the support strength of the top plate 12, so that when the load platform 41 is raised or lowered, the top plate 12 and the upper end of the lead screw 21 can have sufficient supporting force to ensure the stability and reliability of the lifting.

[0050] like Figure 2 and Figure 3 As shown, optionally, an upper connecting seat 15 and a lower connecting seat 13 are provided on the bracket assembly 1. The upper connecting seat 15 and the lower connecting seat 13 are respectively arranged at the upper end and the lower end of the bracket assembly 1, and the two ends of the lead screw 21 are rotatably connected to the upper connecting seat 15 and the lower connecting seat 13. The upper connecting seat 15 and the lower connecting seat 13 can both be structures matched with a support and a rolling bearing, and the general mounting plate 11 is connected through the support, and the rolling bearing is arranged on the support. The two ends of the lead screw 21 are connected to the rolling bearing to provide support for the lead screw 21, so that the lead screw 21 can realize the rotation around its own axis, thereby driving the nut 22 to move up and down, and realizing the lifting and lowering of the bearing platform 41.

[0051] In this embodiment, two groups of guide assemblies 3 are provided. The two groups of guide assemblies 3 are symmetrically arranged on both sides of the lead screw 21 to improve the guiding performance. Two sliders 32 are provided on the same guide rail 31, and the two sliders 32 are arranged at intervals in the vertical direction. On the one hand, the support strength of the bearing platform 41 is improved, the load-bearing capacity is increased, and it is helpful to ensure the stable lifting of the bearing platform 41; on the other hand, the two sliders 32 arranged at intervals in the vertical direction can optimize the support effect of the bearing platform 41, reduce the risk of the end of the bearing platform 41 away from the bracket assembly 1 sinking during the lifting process and generating radial force on the lead screw 21, reduce the damage to the guide rail 31 and the lead screw 21 due to the sinking of the bearing platform 41, improve the lifting stability, and reduce noise.

[0052] like Figure 2 and Figure 3As shown, optionally, the bearing assembly 4 further includes a first connecting member 42, a second connecting member 43 and a telescopic member 44. The lower end of the first connecting member 42 is hinged to the lower part of the general mounting plate 11, the upper end of the second connecting member 43 is hinged to the lower side of the bearing platform 41, and the upper end of the first connecting member 42 is hinged to the lower end of the second connecting member 43, so that the first connecting member 42 and the second connecting member 43 can rotate relative to each other. The first connecting member 42 and the second connecting member 43 can be rod-shaped structures. The telescopic member 44 can be a cylinder, a hydraulic cylinder or other structure that can achieve telescopic expansion. The fixed end of the telescopic member 44 is connected to the bracket assembly 1, and the telescopic end of the telescopic member 44 is movably connected to the first connecting member 42, and the telescopic expansion of the telescopic member 44 drives the first connecting member 42 to rotate. A slide groove is provided on the upper side of the first connecting member 42, and a sliding block is slidably connected in the slide groove. The telescopic end of the telescopic member 44 is hinged to the sliding block, so that the upper end of the first connecting member 42 can be driven to rotate around the lower end of the first connecting member 42 through the telescopic expansion of the telescopic member 44.

[0053] like Figure 2 and Figure 3 As shown, the first connecting member 42 and the second connecting member 43 are rotatably connected, the lower end of the first connecting member 42 is connected to the general mounting plate 11, and the upper end of the second connecting member 43 is connected to the supporting platform 41, so that the second connecting member 43 can be driven to move by the rotation of the first connecting member 42, so that the second connecting member 43 can support the supporting platform 41 during the lifting and lowering process of the supporting platform 41, thereby ensuring the lifting and lowering stability of the workpiece 100 on the supporting platform 41.

[0054] The motor 24 cooperates with the telescopic member 44, so that the telescopic member 44 can be extended and retracted while the carrying platform 41 is raised and lowered, thereby providing support for the carrying platform 41 through the first connecting member 42 and the second connecting member 43. For example, when the carrying platform 41 rises, the telescopic end of the telescopic member 44 contracts, so that the angle between the first connecting member 42 and the second connecting member 43 becomes larger; when the carrying platform 41 descends, the telescopic end of the telescopic member 44 extends, so that the upper end of the first connecting member 42 gradually moves downward, and the upper end of the first connecting member 42 moves in a direction away from the general installation plate 11, and the angle between the first connecting member 42 and the second connecting member 43 becomes smaller. The extension and retraction of the telescopic member 44 can be controlled by the control component to prevent the telescopic member 44 from extending and retracting without power, so that the position of the first connecting member 42 can be fixed after rotation, providing support for the second connecting member 43. The second connecting member 43 is hinged to the end of the carrying platform 41 away from the general installation plate 11, which helps to improve the lifting stability of the mechanism. Since the hollow part 111 is provided on the main installation plate 11, it is convenient to install the telescopic member 44, and provide space for the telescopic member 44 to be extended and retracted. The length of the first connecting member 42 is greater than the length of the second connecting member 43, and the length of the first connecting member 42 is greater than the horizontal length of the bearing platform 41 perpendicular to the main installation plate 11, so that the supporting function can be smoothly realized; the specific lengths and related dimensional parameters of the first connecting member 42 and the second connecting member 43 can be set as needed, so as to not interfere with each other and play a certain supporting role on the bearing platform 41. The setting position of the telescopic member 44 is set as needed to avoid interference with the movement of the nut 22.

[0055] like Figure 2 and Figure 3 As shown, optionally, the transmission member 23 includes a first synchronous wheel 231, a second synchronous wheel 232 and a belt (not shown in the figure). The first synchronous wheel 231 is connected to the upper end of the lead screw 21, the second synchronous wheel 232 is connected to the output end of the motor 24, and the belt is wound around the outer periphery of the first synchronous wheel 231 and the second synchronous wheel 232, so that the motor 24 can drive the lead screw 21 to rotate. The power output by the motor 24 drives the second synchronous wheel 232 to rotate, the second synchronous wheel 232 drives the first synchronous wheel 231 to rotate through the belt, and the first synchronous wheel 231 drives the lead screw 21 to rotate. The arrangement of the transmission member 23 can facilitate the motor 24 to be arranged on the second side of the bracket assembly 1. Since the bearing platform 41 is arranged on the first side of the bracket assembly 1, the interference of the motor 24 on the vertical movement of the bearing platform 41 can be reduced, and the space on both sides of the bracket assembly 1 can be fully utilized. The transmission member 23 can also include a protective shell, and the protective shell cover is arranged outside the first synchronous wheel 231 and the second synchronous wheel 232 to prevent impurities or other structures from affecting the transmission reliability. It can be understood that the belt in this embodiment is a broad concept, which can be made of rubber or a chain, and the first synchronous wheel 231 and the second synchronous wheel 232 can be selected from pulleys or sprockets according to the type of belt.

[0056] like Figure 2 and Figure 3 As shown, the driving assembly 2 optionally further includes an adjustment plate 25. The adjustment plate 25 is mounted on the upper end of the bracket assembly 1, and the adjustment plate 25 is provided with a first mounting position and a second mounting position. The first mounting position is used to set the upper connecting seat 15 and the first synchronous wheel 231. The motor 24 is mounted on the second mounting position of the adjustment plate 25, and the motor 24 can move horizontally on the second mounting position, so that the horizontal distance between the motor 24 and the lead screw 21 is adjustable. The setting of the adjustment plate 25 provides a horizontal movement space for the motor 24, so that the belt can be tightened by the horizontal movement of the motor 24; at the same time, the motor 24 can be horizontally moved in a direction away from the general mounting plate 11, thereby reducing the influence of the workpiece 100 carried on the bearing platform 41 on the motor 24, and ensuring the stable output of the power of the motor 24 during lifting.

[0057] like Figure 2 and Figure 3 As shown, the first mounting position and the second mounting position can be through-slot structures. The driving assembly 2 also includes a motor mounting plate 26 and a tensioning member (not shown in the figure). The motor mounting plate 26 provides a mounting position for the motor 24. The motor mounting plate 26 is mounted on the second mounting position of the adjustment plate 25. The motor mounting plate 26 is slidably connected to the adjustment plate 25, and the motor 24 is arranged on the lower side of the motor mounting plate 26. A avoidance hole can be provided on the motor mounting plate 26, so that the output end of the motor 24 can pass through the motor mounting plate 26, so that the second synchronous wheel 232 is connected to the output end of the motor 24, and the second synchronous wheel 232 and the first synchronous wheel 231 can be connected through belt transmission, so that the movement of the motor 24 can be realized by the movement of the motor mounting plate 26. The lead screw 21 is arranged at the first mounting position of the adjustment plate 25, and one end of the tensioning member is connected to the end of the adjustment plate 25 away from the lead screw 21, that is, one end of the tensioning member is connected to the end of the second mounting position away from the first mounting position. The other end of the tensioning member is connected to the motor mounting plate 26, and the tensioning member is used to pull the motor mounting plate 26 to tighten the belt to stably realize the power output of the motor 24. The tensioning member can be a spring, a telescopic rod, a rope, or a bolt to respectively screw the adjustment plate 25 and the motor mounting plate 26, or other structures that can realize the movement of the motor mounting plate 26 to tighten the belt.

[0058] like Figure 2 and Figure 3As shown, optionally, the mechanism further includes a sensing component 5. The sensing component 5 includes a first sensor 51, a second sensor 52 and a detection member 53, and the detection member 53 is used to be identified by the first sensor 51 and the second sensor 52 so as to play a positioning role. The guide rail 31 is arranged on one side of the lead screw 21, the detection member 53 is arranged on the side of the slider 32 away from the lead screw 21, the first sensor 51 and the second sensor 52 are both arranged on the first side of the bracket assembly 1, the first sensor 51 is arranged below the second sensor 52, and the first sensor 51 and the second sensor 52 are used to detect the detection member 53.

[0059] By moving the slider 32 up and down, the detection member 53 can move upward to be flush with the second sensor 52 and move downward to be flush with the first sensor 51. By identifying and locating the position of the detection member 53, the moving position of the slider 32 can be obtained, and then the moving position of the bearing platform 41 can be determined, so that when the detection member 53 reaches the height of the first sensor 51 and the second sensor 52, the drive of the motor 24 can be stopped in time, the lowest position and the highest position of the bearing platform 41 are limited, and the lifting safety and the reliability of the mechanism operation are guaranteed. The detection member 53 can be set on the connecting plate connected to the slider 32 to reduce the impact on the sliding of the slider 32. The first sensor 51 and the second sensor 52 can use a suitable sensor structure, and the detection member 53 can be made of a structure or material that can be detected by the sensor; the setting position of the first sensor 51 and the second sensor 52 is set according to actual needs, which can avoid interference and improve the safety of lifting. The setting position of the telescopic member 44 needs to be set according to actual needs to avoid interference at the lowest position of the bearing platform 41.

[0060] It can be understood that the mechanism includes a control component, which can be electrically connected to other structures so as to control the start and stop of the lifting action, as well as the realization of other actions, to ensure the reliable realization of lifting; the mechanism also includes structures for necessary functions such as connection, support, protection and driving, so that the mechanism can operate normally; the shape, size, setting quantity and other parameters of each part of the mechanism can be determined as needed, as long as the corresponding functions can be realized.

[0061] The implementation principle of a screw lifting mechanism in the embodiment of the present application is as follows: adjust the tensioning member to tighten the belt between the first synchronous wheel 231 and the second synchronous wheel 232; place the workpiece 100 on the carrier 41, start the motor 24 to rotate the screw 21, and the nut 22 drives the carrier 41 to rise; at this time, the telescopic member 44 contracts, so that the first connecting member 42 and the second connecting member 43 can move with the carrier 41, thereby providing continuous support for the carrier 41; after the second sensor 52 detects the detection member 53, the motor 24 and the telescopic member 44 are both stopped, and the carrier 41 reaches the highest position; when descending, the motor 24 drives the screw 21 to rotate in the opposite direction, so that the nut 22 drives the carrier 41 to move downward, and the telescopic member 44 extends. When the first sensor 51 detects the detection member 53, the motor 24 and the telescopic member 44 stop driving, and the carrier 41 moves to the lowest position, so that the workpiece 100 on it can be stably lifted and lowered through the carrier 41, and the setting of the guide component 3 makes the mechanism less worn, which helps to extend the service life and reduce noise.

[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A screw lifting mechanism, characterized in that: include: Bracket assembly (1); A driving assembly (2), comprising a lead screw (21), a nut (22), a transmission member (23) and a motor (24), wherein two ends of the lead screw (21) are rotatably connected to an upper end and a lower end of the support assembly (1), respectively, so that the lead screw (21) is arranged on a first side of the support assembly (1), the nut (22) is screwed onto the lead screw (21), the motor (24) is arranged on a second side of the support assembly (1), and the transmission member (23) is transmission-connected to the motor (24) and the lead screw (21), so that the motor (24) drives the lead screw (21) to rotate via the transmission member (23); A guide assembly (3), comprising a guide rail (31) and a slider (32), wherein the guide rail (31) is arranged on a first side of the bracket assembly (1), the slider (32) is slidably connected to the guide rail (31), and the slider (32) is connected to the nut (22); The bearing assembly (4) comprises a bearing platform (41), wherein the bearing platform (41) is arranged on a first side of the bracket assembly (1), and one end of the bearing platform (41) is connected to the slider (32) and the nut (22), so that the nut (22) drives the bearing platform (41) to move back and forth along the axial direction of the lead screw (21).

2. The screw lifting mechanism according to claim 1, characterized in that: The bearing assembly (4) further comprises a first connecting member (42), a second connecting member (43) and a telescopic member (44); the lower end of the first connecting member (42) is hinged to the lower end of the support assembly (1); the upper end of the second connecting member (43) is hinged to the lower side of the bearing platform (41); the upper end of the first connecting member (42) is hinged to the lower end of the second connecting member (43); the fixed end of the telescopic member (44) is connected to the support assembly (1); the telescopic end of the telescopic member (44) is movably connected to the first connecting member (42); the telescopic movement of the telescopic member (44) drives the upper end of the first connecting member (42) to move, so that the second connecting member (43) is used to support the bearing platform (41).

3. The screw lifting mechanism according to claim 1, characterized in that: The transmission member (23) comprises a first synchronous wheel (231), a second synchronous wheel (232) and a belt, wherein the first synchronous wheel (231) is connected to the upper end of the lead screw (21), the second synchronous wheel (232) is connected to the output end of the motor (24), and the belt is wound around the first synchronous wheel (231) and the second synchronous wheel (232), so that the motor (24) drives the lead screw (21) to rotate.

4. The screw lifting mechanism according to claim 3, characterized in that: The driving assembly (2) further comprises an adjustment plate (25), wherein the adjustment plate (25) is arranged at the upper end of the bracket assembly (1), and the motor (24) is mounted on the adjustment plate (25), so that the horizontal distance between the motor (24) and the lead screw (21) is adjustable.

5. The screw lifting mechanism according to claim 4, characterized in that: The drive assembly (2) further comprises a motor mounting plate (26) and a tensioning member, wherein the motor mounting plate (26) is slidably connected to the adjustment plate (25), the motor (24) is arranged on the lower side of the motor mounting plate (26), the lead screw (21) is arranged at one end of the adjustment plate (25), one end of the tensioning member is connected to an end of the adjustment plate (25) away from the lead screw (21), and the other end of the tensioning member is connected to the motor mounting plate (26), and the tensioning member is used to pull the motor mounting plate (26) to tighten the belt.

6. The screw lifting mechanism according to claim 1, characterized in that: The support assembly (1) further comprises a sensing component (5), the sensing component (5) comprising a first sensor (51), a second sensor (52) and a detection member (53), the guide rail (31) being arranged on one side of the lead screw (21), the detection member (53) being arranged on a side of the slider (32) away from the lead screw (21), the first sensor (51) and the second sensor (52) being arranged on a first side of the support assembly (1), the first sensor (51) being arranged below the second sensor (52), the first sensor (51) and the second sensor (52) being used to detect the detection member (53), position the detection member (53), and limit the lowest position and the highest position of the slider (32).

7. The screw lifting mechanism according to claim 1, characterized in that: The bracket assembly (1) comprises a general mounting plate (11) and a top plate (12); the general mounting plate (11) extends in a vertical direction; the top plate (12) is connected to the upper end of the general mounting plate (11); and the general mounting plate (11) is provided with a hollow portion (111).

8. The screw lifting mechanism according to claim 7, characterized in that: The bracket assembly (1) further comprises a support member (14), a first end of the support member (14) being connected to the main mounting plate (11), a second end of the support member (14) being connected to the top plate (12), and the second end of the support member (14) being spaced apart from the main mounting plate (11) in a horizontal direction.

9. The screw lifting mechanism according to claim 1, characterized in that: The support assembly (1) is provided with an upper connecting seat (15) and a lower connecting seat (13); the upper connecting seat (15) and the lower connecting seat (13) are respectively arranged at the upper end and the lower end of the support assembly (1); and the two ends of the lead screw (21) are rotatably connected to the upper connecting seat (15) and the lower connecting seat (13) respectively.

10. The screw lifting mechanism according to claim 1, characterized in that: The guide assembly (3) is provided with two groups, and the two groups of the guide assembly (3) are symmetrically arranged on both sides of the lead screw (21). Two sliders (32) are provided on the same guide rail (31), and the two sliders (32) are arranged at intervals in the vertical direction.

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