Lifting device and lifting equipment

Abstract

The utility model relates to a lifting device and lifting equipment, the lifting equipment comprises a driving device and a lifting device, the lifting device comprises a lifting unit and a limiting unit, the lifting unit comprises a first driving source and a lifting mechanism, and the lifting mechanism comprises a base, a shear fork assembly and a lifting table; a first lower connecting end hinged to the base and a second lower connecting end slidably connected to the base and connected to a first driving source are arranged on the lower side of the shear fork assembly; a first upper connecting end hinged to the lifting table and a second upper connecting end slidably connected with the lifting table are arranged on the upper side of the shear fork assembly, the limiting unit comprises a mounting support and a limiting assembly connected to the driving device, and the driving device is used for driving the limiting assembly to abut against the second lower connecting end so that the lifting table can be fixed to different height positions. Therefore, the central axes of the cage ribs with different diameters can be accurately ensured to be positioned at the same height, the end faces of the cage ribs can be prevented from inclining, the production quality of the cage ribs is greatly improved, and the development requirements of automatic production equipment are met.

Description

Technical Field

[0001] The present application relates to the technical field of prestressed pipe pile production, and in particular to a lifting device and lifting equipment. Background Art

[0002] Lifting mechanism is a commonly used mechanism in production and life. It is usually divided into scissor type, telescopic type, sleeve type, telescopic arm type, folding arm type, etc. according to the structure. For example, the scissor type lifting mechanism has the characteristics of simple structure and stable lifting, and is widely used in various scenarios. For example, in the process of rolling welding of pipe pile cage reinforcement, in order to prevent the long cage reinforcement from deflecting too much, the pneumatic scissor type lifting mechanism can be used to support the cage reinforcement.

[0003] However, the existing scissor-type lifting mechanism has low positioning accuracy. Specifically, the existing scissor-type lifting mechanism uses positioning pin holes or sensors for positioning, or requires workers to manually adjust the positioning pins, resulting in poor positioning accuracy (between 10-20mm). Therefore, when supporting the cage reinforcement, the position is either high or low, causing the end face of the cage reinforcement to tilt, and when cage reinforcements of different diameters are produced on a rolling welding machine, it cannot be guaranteed that the central axes of the cage reinforcements of different diameters can be accurately located at the same height. All of the above will affect the production quality of the cage reinforcement. Utility Model Content

[0004] Based on this, the purpose of the present application is to provide a lifting device and a lifting equipment including the lifting device, so as to solve the problem that the existing lifting mechanism has low positioning accuracy, resulting in the inability to ensure that the central axis of cage bars of different diameters can be accurately located at the same height when the cage bars are changed, which in turn affects the production quality of the cage bars.

[0005] According to one aspect of the present application, a lifting device is provided, comprising:

[0006] A lifting unit, the lifting unit includes a first driving source and a lifting mechanism, the lifting mechanism includes a base, a scissor assembly and a lifting platform, the lower side of the scissor assembly has a first lower connecting end and a second lower connecting end arranged at intervals along a first horizontal direction, the first lower connecting end is hinged to the base, the second lower connecting end is connected to the first driving source and is slidably connected to the base; the upper side of the scissor assembly has a first upper connecting end and a second upper connecting end arranged at intervals along the first horizontal direction, the first upper connecting end is hinged to the lifting platform, and the second upper connecting end is slidably connected to the lifting platform; the first driving source is used to drive the second lower connecting end to move on the base along the first horizontal direction, in response to the movement of the second lower connecting end on the base, the second upper connecting end can slide relative to the lifting platform along the first horizontal direction, and at the same time drive the lifting platform to perform lifting movement;

[0007] A limit unit is arranged at the bottom of the lifting platform, and the limit unit includes a mounting bracket and a limit component slidably arranged on the mounting bracket. The limit component is used to abut against the second lower connecting end at different positions of the mounting bracket along the first horizontal direction to fix the lifting platform at different height positions.

[0008] In one embodiment, the scissors assembly includes a first connecting member and a second connecting member, the first connecting member and the second connecting member are rotatably connected to each other, the lower end and the upper end of the first connecting member respectively form the first lower connecting end and the second upper connecting end, and the lower end and the upper end of the second connecting member respectively form the second lower connecting end and the first upper connecting end.

[0009] In one embodiment, the first connecting member includes two first connecting plates spaced apart and connected to each other in the second horizontal direction, and the second connecting member includes two second connecting plates spaced apart and connected to each other in the second horizontal direction, each of the first connecting plates is rotatably cross-connected with a corresponding second connecting plate, and the lower ends of the two second connecting plates are connected to each other via a connecting shaft, and the connecting shaft and the lower ends of the two second connecting plates are jointly constructed to form the second lower connecting end;

[0010] The second horizontal direction is perpendicular to the first horizontal direction.

[0011] In one of the embodiments, a sliding member for supporting materials is provided on the lifting platform, and the sliding member and the lifting platform are connected to each other via a plurality of insulating members.

[0012] In one embodiment, the limiting assembly includes a limiting member and a buffer member connected to the limiting member, the buffer member has a buffer end for contacting the second lower connecting end, the limiting member has a limiting end for abutting the second lower connecting end to limit the second lower connecting end, and the buffer end is protruded relative to the limiting end on one side along the first horizontal direction;

[0013] The buffer end can slowly retreat when contacting the second lower connecting end, so that the second lower connecting end can slowly approach the limiting end and abut against the limiting end.

[0014] In one embodiment, the limiting unit also includes a transmission assembly, the limiting unit also includes a transmission assembly, the transmission assembly includes a screw rod arranged along the first horizontal direction, the limiting assembly can be movably mounted on the screw rod, and the screw rod can rotate around its own central axis under the action of external force to drive the limiting assembly to move along the axial direction of the screw rod.

[0015] In one of the embodiments, a universal joint is installed at the end of the screw rod, and the universal joint is used to connect with the screw rod of another lifting device so that the two lifting devices can be connected in series.

[0016] In one embodiment, an origin detection sensor is provided on the mounting bracket, and a signal transmitting board is provided on the limit assembly, and the signal transmitting board is used to communicate with a control module, so that when the limit assembly drives the signal transmitting board to move along the first horizontal direction and relative to the origin detection sensor, the control module can identify the position of the limit assembly as the origin position.

[0017] According to another aspect of the present application, a lifting device is provided, comprising a driving device and a lifting device as described in any of the above schemes, the driving device comprising a second driving source and a control module communicatively connected to the second driving source, the second driving source being transmission-connected to the limit assembly, the control module being configured to control the second driving source to drive the limit assembly to move from an origin position to a limit position based on the size of the material, and to control the second driving source to lock the limit assembly at the limit position.

[0018] In one embodiment, there are at least two lifting devices, all of which are connected in series along the first horizontal direction, the limiting units of two adjacent lifting devices are connected to each other through a universal joint, and the limiting assembly of the lifting device located at the head end is connected to the second driving source.

[0019] The above-mentioned lifting device and lifting equipment are provided with a limit unit in the lifting device, the limit unit includes a mounting bracket and a limit component slidably arranged on the mounting bracket, and a driving device is provided to connect the limit component, so that when the second lower connecting end of the scissors assembly in the lifting unit moves along the first horizontal direction on the base, the control module of the driving device can control the second driving source of the driving device to drive the limit component to move from an origin position to a limit position based on the size of the material, and can control the second driving source to lock the limit component at the limit position, so that the lifting platform can be fixed at different height positions, thereby realizing accurate positioning of the material in the height direction, so that when the material is cage reinforcement and cage reinforcements of different diameters are placed on the lifting platform of the lifting unit, the lifting device can automatically adjust the height of the lifting platform, thereby accurately ensuring that the central axes of cage reinforcements of different diameters are located at the same height, and can also avoid the inclination of the end faces of the cage reinforcements, thereby greatly improving the production quality of the cage reinforcements and adapting to the development needs of automated production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an axonometric view of a lifting device provided in one embodiment of the present application.

[0021] Figure 2 A top view of a lifting device provided in one embodiment of the present application.

[0022] Figure 3 This is an axial side view of a lifting unit in a lifting device provided in an embodiment of the present application.

[0023] Figure 4 for Figure 2 Sectional view along AA direction.

[0024] Figure 5 A schematic diagram of a lifting device provided in an embodiment of the present application in which a limiting unit fixes a lifting platform of the lifting unit at a certain height.

[0025] Figure 6 This is an axial view of the connection between a limiting unit and a driving device in a lifting device provided in an embodiment of the present application.

[0026] Figure 7 A top view of a limiting unit in a lifting device provided in an embodiment of the present application.

[0027] Description of reference numerals:

[0028] 10. Lifting device; 100. Lifting unit; 110. First driving source; 120. Lifting mechanism; 121. Base; 122. Scissor assembly; 122a. First upper connecting end; 122b. First lower connecting end; 122c. Second upper connecting end; 122d. Second lower connecting end; 1221. First connecting member; 1221a. First connecting plate; 1222. Second connecting member; 1222a. Second connecting plate; 1222b. Connecting shaft; 1223. Roller; 123. Lifting Table; 1231, lifting plate; 124, sliding member; 125, insulating member; 200, limiting unit; 210, mounting bracket; 220, limiting assembly; 221, limiting member; 221a, limiting end; 2211, mounting plate; 2212, limiting bumper; 2212a, limiting groove; 222, buffer member; 222a, buffer end; 230, transmission assembly; 240, origin detection sensor; 250, signal transmitting board; 260, guide assembly; 270, universal joint; 20, driving device. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does 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 cannot be understood as a limitation on the present application.

[0031] In addition, if the terms "first" or "second" appear, these terms 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 at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0035] The present application provides a lifting device and a lifting equipment, wherein the lifting equipment includes a lifting device, which is used to carry materials and adjust the height of the materials so that when the material sizes (such as diameters) are different, the materials can be located at the same height to ensure the production quality of the materials.

[0036] The following uses the cage reinforcement used to produce prestressed concrete piles as an example to illustrate the structure of the lifting equipment and lifting device in the present application. It can be understood that in other embodiments, the lifting equipment and lifting device in the present application are not limited to being used only for carrying cage reinforcement and adjusting the height position of the cage reinforcement, but can also be used for carrying any material and adjusting the height position of any material, which is not limited here.

[0037] Figure 1 and Figure 2 A lifting device provided in an embodiment of the present application is shown. The lifting device provided in the embodiment of the present application includes a lifting device 10 and a driving device 20, wherein the lifting device 10 includes a lifting unit 100 and a limiting unit 200, the lifting unit 100 has a lifting platform 123 for carrying materials, and the lifting platform 123 can be lifted and moved to adjust the height position of the materials (such as cage reinforcement); the limiting unit 200 is arranged at the bottom of the lifting platform 123 and connected to the driving device 20, and is used to limit the lifting unit 100 under the drive of the driving device 20, so that the lifting platform 123 can be fixed at different height positions, thereby meeting the production requirements for cage reinforcements of different diameters.

[0038] Specifically, Figure 3 As shown, the lifting unit 100 includes a first driving source 110 and a lifting mechanism 120. The first driving source 110 can be a cylinder or an electric cylinder. The lifting mechanism 120 is Figure 3The embodiment shown in the figure is a scissor-type lifting mechanism, including a base 121, a scissor assembly 122 and a lifting platform 123. The lower side of the scissor assembly 122 has a first lower connecting end 122b and a second lower connecting end 122d arranged at intervals along a first horizontal direction (the X direction shown in the figure), the first lower connecting end 122b is hinged to the base 121, and the second lower connecting end 122d is connected to the first driving source 110 and is slidably connected to the base 121; the upper side of the scissor assembly 122 has a first lower connecting end 122b and a second lower connecting end 122d arranged at intervals along the first horizontal direction. The first upper connecting end 122a and the second upper connecting end 122c, the first upper connecting end 122a is hinged to the lifting platform 123, the second upper connecting end 122c is slidably connected to the lifting platform 123, the first driving source 110 is used to drive the second lower connecting end 122d to move along the first horizontal direction on the base 121, in response to the movement of the second lower connecting end 122d on the base 121, the second upper connecting end 122c can slide relative to the lifting platform 123 along the first horizontal direction, and at the same time drive the lifting platform 123 to perform lifting movement. The limiting unit 200 includes a mounting bracket 210 and a limiting assembly 220 slidably disposed on the mounting bracket 210. The limiting assembly 220 is connected to the driving device 20, and is used to move and position to different positions of the mounting bracket 210 along the first horizontal direction under the drive of the driving device 20, so as to abut against the side of the second lower connecting end 122d away from the first driving source 110 at different positions of the mounting bracket 210 along the first horizontal direction, thereby fixing the lifting platform 123 at different height positions.

[0039] More specifically, in the specific structure of the scissors assembly 122, the scissors assembly 122 includes a first connecting member 1221 and a second connecting member 1222, and the first connecting member 1221 and the second connecting member 1222 are rotatably connected to each other, and the lower end and the upper end of the first connecting member 1221 respectively form a first lower connecting end 122b and a second upper connecting end 122c, and the lower end and the upper end of the second connecting member 1222 respectively form a second lower connecting end 122d and a first upper connecting end 122a.

[0040] Furthermore, since the cage reinforcement has a certain diameter, in order to enable the lifting platform 123 to stably carry the cage reinforcement to prevent the cage reinforcement from falling, the lifting platform 123 includes two lifting plates 1231, and the two lifting plates 1231 jointly carry the cage reinforcement. Therefore, correspondingly, the first connecting member 1221 includes two first connecting plates 1221a that are spaced apart and interconnected in a second horizontal direction (the Y direction shown in the figure) perpendicular to the first horizontal direction, and the second connecting member 1222 includes two second connecting plates 1222a that are spaced apart and interconnected in the second horizontal direction. Each first connecting plate 1221a and a corresponding second connecting plate 1222a are rotatably cross-connected, and the two first connecting plates 1221a and the two second connecting plates 1222a respectively carry a corresponding lifting plate 1231, that is, the upper end of a first connecting plate 1221a and the upper end of a second connecting plate 1222a jointly carry a lifting plate 1231. In addition, the lower ends of the two second connecting plates 1222a are connected to each other through a connecting shaft 1222b, and the connecting shaft 1222b and the lower ends of the two second connecting plates 1222a are jointly constructed to form a second lower connecting end 122d. The first driving source 110 is connected to the connecting shaft 1222b through a positioning pin, so that the output end of the first driving source 110 can drive the connecting shaft 1222b and the lower ends of the second connecting plates 1222a to move together along the first horizontal direction on the base 121.

[0041] Furthermore, rollers 1223 are respectively provided on both sides of the lower end of the second connecting member 1222 in the second horizontal direction, and the rollers 1223 are rollingly set on the base 121, so that the first driving source 110 can drive the second lower connecting end 122d to move on the base 121 more smoothly without obstruction.

[0042] So, like Figure 4 and Figure 5 As shown, when the material is cage bars and cage bars of different diameters are placed on the lifting plate 1231 of the lifting unit 100, the lifting device 10 can automatically adjust the height of the lifting platform 123 by limiting the second lower connection of the lifting mechanism 120 at different positions in the first horizontal direction by the limiting component 220.

[0043] Please continue reading Figure 3In a preferred embodiment, a sliding member 124 for supporting the material is provided on the lifting platform 123. The sliding member 124 may be a supporting roller, a supporting chain, etc., so that the sliding member 124 can not only carry the material, but also facilitate the material to slide or roll on the lifting platform 123, thereby saving labor. For example, when the material is a cage bar, since there will be current on the cage bar during the rolling welding process, in order to insulate and prevent the current on the cage bar from flowing into other positions of the equipment and causing electric shock to personnel, the sliding member 124 and the lifting platform 123 are connected to each other through a plurality of insulating members 125, and the insulating members 125 are used to achieve current isolation between the sliding member 124 and the lifting platform 123.

[0044] See also Figure 6 In the specific structure of the limit assembly 220, the limit assembly 220 is connected to the driving device 20 through the transmission assembly 230. In one embodiment, the transmission assembly 230 includes a screw rod arranged along the first horizontal direction and connected to the driving device 20. The limit assembly 220 is provided with a threaded hole, and the screw rod is passed through the threaded hole, so that the limit assembly 220 can be movably mounted on the screw rod. Under the action of the driving force generated by the driving device 20, the screw rod can rotate around its own central axis to drive the limit assembly 220 to move along the axial direction of the screw rod (i.e., the first horizontal direction).

[0045] In terms of the structure of the driving device 20, the driving device 20 includes a second driving source and a control module communicatively connected to the second driving source. The second driving source is transmission-connected to the limit assembly 220. The control module is configured to control the second driving source to drive the limit assembly 220 from an origin position to a limit position based on the size of the material, and to control the second driving source to lock the limit assembly 220 at the limit position.

[0046] In some embodiments, the drive device 20 can be a servo motor with a brake function, the encoder and brake module of the servo motor itself are constructed as a control module, and the main body of the motor is constructed as a second drive source, so that the drive device 20 can accurately drive the limit assembly 220 to achieve positioning and self-locking, or the second drive source can be an ordinary asynchronous motor, and the control module is an external encoder and brake module, which is not limited here.

[0047] In some other embodiments, the driving device 20 may also be a pneumatic cylinder or an electric cylinder with a control module. In this case, the output end of the pneumatic cylinder or the electric cylinder is directly connected to the limit assembly 220, and the control module controls the pneumatic cylinder or the electric cylinder to push and pull the limit assembly 220 and lock the limit assembly 220 at the limit position.

[0048] In a preferred embodiment, the combination Figure 6 and Figure 7As shown, an origin detection sensor 240 is provided on the mounting bracket 210, and a signal transmitting plate 250 is provided on the limit assembly 220. The signal transmitting plate 250 is communicatively connected with the control module, so that when the limit assembly 220 drives the signal transmitting plate 250 to move along the first horizontal direction and is opposite to the origin detection sensor 240, the control module can recognize that the position of the limit assembly 220 is the origin position.

[0049] Thus, just because the drive device 20 has the precise positioning function and the brake locking function, the control module of the drive device 20 can control the second drive source to accurately move the limit assembly 220 from the origin position to the preset limit position according to the size of the material (for example, according to the diameter of the cage reinforcement), so that the lifting platform 123 can be accurately controlled to stop at a certain required height position, thereby accurately ensuring that the central axis of the cage reinforcements of different diameters is at the same height, so that the development needs of automated production equipment can be further adapted; and after the material size changes, the limit assembly 220 can also accurately return to the preset origin position. For example, when the second drive source is a motor, the control module can give the number of rotation steps of the motor according to the diameter size of the cage reinforcement, and the rotation of the motor can drive the limit assembly 220 to move to the corresponding position and lock it.

[0050] Similarly, in order to ensure smooth movement of the limit assembly 220, the limit unit 200 also includes a guide assembly 260, which includes a guide rail arranged along a first horizontal direction and a guide block slidably connected to the guide rail. The limit assembly 220 is installed on the guide block, thereby further ensuring that the limit assembly 220 can only move along the first horizontal direction.

[0051] Of course, in some other embodiments, the limit assembly 220 may be limited in the dovetail groove or the guide function may be directly realized by the cooperation between the screw rod and the limit assembly 220, or the guide assembly 260 may also be an optical axis slider mechanism, and there is no special limitation here.

[0052] Furthermore, in order to prevent the second lower connecting end 122d of the lifting unit 100 from making hard contact with the stop assembly 220, thereby causing the second lower connecting end 122d to rebound after contacting the stop assembly 220, in a preferred embodiment, as shown in FIG. Figure 6 As shown, the limit assembly 220 includes a limit member 221 and a buffer member 222 connected to the limit member 221. The buffer member 222 can be a hydraulic buffer, etc., which has a buffer end 222a for contacting the second lower connecting end 122d. The limit member 221 has a limit end 221a for abutting the second lower connecting end 122d to limit the second lower connecting end 122d. The buffer end 222a is protruded relative to the limit end 221a on one side along the first horizontal direction.

[0053] So, combined Figure 4 and Figure 5 As shown, when the buffer end 222a contacts the second lower connection end 122d, it can slowly (i.e., at a speed much lower than the moving speed of the second lower connection end 122d before contacting the buffer end 222a) retreat in the direction away from the lifting unit 100, so that the second lower connection end 122d can slowly approach the limit end 221a and abut against the limit end 221a. In this way, the second lower connection end 122d is prevented from being in hard contact with the limit assembly 220, thereby preventing the second lower connection end 122d from rebounding after contacting the limit assembly 220, thereby ensuring that the second lower connection end 122d can accurately stop at the required position after contacting the limit assembly 220.

[0054] Furthermore, the limiting member 221 includes a mounting plate 2211 and a limiting bump block 2212 arranged on the mounting plate 2211, and the limiting bump block 2212 is provided with a limiting groove 2212a, and the groove wall profile of the limiting groove 2212a is arc-shaped, which matches the outer peripheral surface profile of the connecting shaft 1222b constituting the second lower connecting end 122d. Of course, the groove wall profile of the limiting groove 2212a can be any shape, as long as it preferably matches the profile of the second lower connecting end 122d, so that the limiting bump block 2212 can be tightly abutted against the second lower connecting end 122d.

[0055] It is worth noting that when the material has a long size, for example, when the material is a cage reinforcement with a length of tens of meters, multiple lifting platforms 123 may be required to jointly carry the cage reinforcement to prevent the long cage reinforcement from deflecting too much, and all lifting platforms 123 need to be located at the same height and perform lifting actions synchronously to ensure that the cage reinforcement is always placed horizontally. In an improved embodiment, the lifting device 10 has at least two, and each lifting device 10 has, for example Figure 6 As shown, a universal joint 270 is installed at the end of the lead screw of the transmission assembly 230, and all the lifting devices 10 are connected in series in sequence along the first horizontal direction. The lead screws in the limiting units 200 of two adjacent lifting devices 10 are connected to each other through the universal joint 270, and the limiting assembly 220 located at the head end is connected to the second driving source of a driving device 20 through the transmission assembly 230, so that only one driving device 20 is needed to drive the lead screws of all the lifting devices 10 to rotate together, thereby driving the limit assemblies 220 of all the lifting devices 10 to move the same distance together, without manually adjusting the height of the lifting platforms 123 in multiple lifting devices 10, so that the lifting platforms 123 of all the lifting devices 10 can be accurately fixed at the same height.

[0056] In this way, when the cage reinforcement is placed on a plurality of lifting platforms 123, the cage reinforcement can be placed horizontally without tilting, thereby preventing the end surface of the produced cage reinforcement from tilting, thereby effectively ensuring the production quality of the cage reinforcement.

[0057] It can be seen that the lifting equipment described in the present application can achieve high-precision positioning of the lifting platform in the height direction, and can automatically adjust the lifting height of the lifting platform during production changes, which can greatly improve the production quality of cage reinforcement and adapt to the development needs of automated production equipment.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A lifting device, characterized in that: include: A lifting unit, the lifting unit includes a first driving source and a lifting mechanism, the lifting mechanism includes a base, a scissor assembly and a lifting platform, the lower side of the scissor assembly has a first lower connecting end and a second lower connecting end arranged at intervals along a first horizontal direction, the first lower connecting end is hinged to the base, the second lower connecting end is connected to the first driving source and is slidably connected to the base; the upper side of the scissor assembly has a first upper connecting end and a second upper connecting end arranged at intervals along the first horizontal direction, the first upper connecting end is hinged to the lifting platform, and the second upper connecting end is slidably connected to the lifting platform; the first driving source is used to drive the second lower connecting end to move on the base along the first horizontal direction, in response to the movement of the second lower connecting end on the base, the second upper connecting end can slide relative to the lifting platform along the first horizontal direction, and at the same time drive the lifting platform to perform lifting movement; A limit unit is arranged at the bottom of the lifting platform, and the limit unit includes a mounting bracket and a limit component slidably arranged on the mounting bracket. The limit component is used to abut against the second lower connecting end at different positions of the mounting bracket along the first horizontal direction to fix the lifting platform at different height positions.

2. The lifting device according to claim 1, characterized in that: The scissors assembly includes a first connecting member and a second connecting member, the first connecting member and the second connecting member are rotatably connected to each other, the lower end and the upper end of the first connecting member respectively form the first lower connecting end and the second upper connecting end, and the lower end and the upper end of the second connecting member respectively form the second lower connecting end and the first upper connecting end.

3. The lifting device according to claim 2, characterized in that: The first connecting member includes two first connecting plates spaced apart and connected to each other in the second horizontal direction, and the second connecting member includes two second connecting plates spaced apart and connected to each other in the second horizontal direction, each of the first connecting plates is rotatably cross-connected with a corresponding second connecting plate, and the lower ends of the two second connecting plates are connected to each other via a connecting shaft, and the connecting shaft and the lower ends of the two second connecting plates are jointly constructed to form the second lower connecting end; The second horizontal direction is perpendicular to the first horizontal direction.

4. The lifting device according to claim 1, characterized in that: The lifting platform is provided with a sliding member for supporting materials, and the sliding member and the lifting platform are connected to each other through a plurality of insulating members.

5. The lifting device according to claim 1, characterized in that: The limiting assembly includes a limiting member and a buffer member connected to the limiting member, the buffer member has a buffer end for contacting the second lower connecting end, the limiting member has a limiting end for abutting the second lower connecting end to limit the second lower connecting end, and the buffer end is protruded relative to the limiting end at one side along the first horizontal direction; The buffer end can slowly retreat when contacting the second lower connecting end, so that the second lower connecting end can slowly approach the limiting end and abut against the limiting end.

6. The lifting device according to claim 1, characterized in that: The limiting unit also includes a transmission assembly, which includes a screw rod arranged along the first horizontal direction. The limiting assembly can be movably mounted on the screw rod. The screw rod can rotate around its own central axis under the action of external force to drive the limiting assembly to move along the axial direction of the screw rod.

7. The lifting device according to claim 6, characterized in that: A universal joint is installed at the end of the screw rod, and the universal joint is used to connect with the screw rod of another lifting device so that the two lifting devices can be connected in series.

8. The lifting device according to claim 1, characterized in that: An origin detection sensor is provided on the mounting bracket, and a signal transmitting board is provided on the limit assembly. The signal transmitting board is used to communicate with a control module, so that when the limit assembly drives the signal transmitting board to move along the first horizontal direction and is opposite to the origin detection sensor, the control module can identify the position of the limit assembly as the origin position.

9. A lifting device, characterized in that: It comprises a driving device and a lifting device as described in any one of claims 1 to 8, wherein the driving device comprises a second driving source and a control module communicatively connected to the second driving source, the second driving source is transmission-connected to the limit assembly, and the control module is configured to control the second driving source to drive the limit assembly to move from an origin position to a limit position based on the size of the material, and to control the second driving source to lock the limit assembly at the limit position.

10. The lifting device according to claim 9, characterized in that: There are at least two lifting devices, all of which are connected in series in sequence along the first horizontal direction, the limiting units of two adjacent lifting devices are connected to each other through a universal joint, and the limiting component of the lifting device located at the head end is connected to the second driving source.

Images