Lifting device

Abstract

The utility model provides a lifting device, which comprises a lifting part, a lifting part and a lifting part, the conveying part is arranged on the bearing part, and when the conveying part is in the input state, the conveying part is used for inputting the workpieces from the feeding and discharging position to the stopping position; when the conveying part is in the output state, the conveying part is used for conveying the workpieces from the stop position to the feeding and discharging position. The first sensing part and the second sensing part are arranged at the feeding and discharging position and the stopping position respectively; the control system is electrically connected with the first sensing part, the second sensing part and the conveying part; after the first sensing part senses the workpiece, the control system drives the conveying part to enable the conveying part to be in an input state until the second sensing part senses the workpiece, and the conveying part stops conveying operation; and the control system drives the conveying part to enable the conveying part to be in an output state until the first sensing part senses that the workpiece leaves the feeding and discharging position, and the conveying part stops conveying operation. According to the scheme, the labor intensity of workers can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, and more specifically, to a lifting device. Background Art

[0002] In the existing double-speed chain conveyor system, a hoist is usually used to achieve the vertical transfer of pallets between the upper line body and the lower line body. When the hoist is located at the docking position of the upper line body or the lower line body, the loading and unloading of pallets usually need to be completed manually. Specifically, the staff needs to manually place the pallet from the line body onto the hoist, or remove it from the hoist and place it onto the line body to complete the cyclic transfer of the pallet, resulting in a relatively high labor intensity. Content of the Utility Model

[0003] The utility model provides a lifting device to solve the problem in the prior art that the staff needs to manually place the pallet from the line body onto the hoist, or remove it from the hoist and place it onto the line body to complete the cyclic transfer of the pallet, resulting in a relatively high labor intensity.

[0004] The utility model provides a lifting device, which includes: a lifting part, including a liftable bearing part that lifts between a first height and a second height; a conveying part, arranged on the bearing part, the conveying part having an input state and an output state arranged oppositely. When the conveying part is in the input state, the conveying part is used to input the workpiece from the loading and unloading position to the stop position; when the conveying part is in the output state, the conveying part is used to convey the workpiece from the stop position to the loading and unloading position; a first sensing part, arranged at the loading and unloading position; a second sensing part, arranged at the stop position; a control system, electrically connected to the first sensing part, the second sensing part and the conveying part respectively. After the first sensing part senses the workpiece, the control system drives the conveying part to make the conveying part in the input state until the second sensing part senses the workpiece, and then the conveying part stops the conveying operation; the control system drives the conveying part to make the conveying part in the output state until the first sensing part senses that the workpiece leaves the loading and unloading position, and then the conveying part stops the conveying operation.

[0005] Furthermore, the control system is electrically connected to the lifting part; when the bearing part is at one of the first height and the second height, after the second sensing part senses the workpiece and the conveying part stops the conveying operation, the control system controls the lifting part to make the bearing part move towards the other direction of the first height and the second height; when the bearing part is at one of the first height and the second height, after the first sensing part senses that the workpiece leaves the loading and unloading position and the conveying part stops the conveying operation, the control system controls the lifting part to make the bearing part move towards the other direction of the first height and the second height.

[0006] Further, the lifting device further includes: a third sensing part for detecting the height of the carrying part. When the third sensing part senses that the carrying part is at the first height and / or the second height, the control system controls the lifting part to stop operating.

[0007] Further, the lifting device further includes: a first buffer part provided on the carrying part and on one side of the stop position away from the loading / unloading position. The first buffer part is used for buffering and stopping the workpiece.

[0008] Further, the conveying part includes: a driving part provided on the carrying part; a roller assembly including at least two conveying rollers. The at least two conveying rollers are spaced and parallelly distributed along the direction from the loading / unloading position to the stop position. The conveying rollers extend vertically along the direction from the loading / unloading position to the stop position. The conveying rollers are rotatably provided on the carrying part. The driving part is drivingly connected to one of the conveying rollers; a conveyor belt sleeved on the outer periphery of the roller assembly. The conveyor belt is used for conveying the workpiece. The driving part drives the conveyor belt to rotate through the roller assembly.

[0009] Further, the carrying part includes: a carrying frame on which the driving part and the roller assembly are both provided; a carrying plate provided on the top of the carrying frame. The carrying plate is used for carrying the workpiece. An avoidance groove is provided on the carrying plate and extends along the direction from the loading / unloading position to the stop position. The avoidance groove is used for avoiding the conveyor belt so that the upper surface of the conveyor belt protrudes upward from the top surface of the carrying plate.

[0010] Further, the lifting device includes a supporting part. The lifting part includes a lifting cylinder, a mounting part, and a carrying part. The base of the lifting cylinder is provided on the supporting part. The mounting part is provided on the piston rod of the lifting cylinder. The carrying part is provided on the mounting part.

[0011] Further, the lifting device further includes a guiding part provided on the supporting part. The mounting part is in guiding cooperation with the guiding part.

[0012] Further, the lifting device further includes: a second buffer part provided on the supporting part and on one side of the moving direction of the mounting part. The second buffer part is used for buffering and stopping the mounting part and / or the carrying part.

[0013] Further, the lifting device further includes: a safety light curtain provided on the top of the supporting part and above the lifting device; the safety light curtain is electrically connected to the lifting part through the control system to control the start and stop of the lifting part through the control system; and / or, the safety light curtain is electrically connected to the conveying part through the control system to control the start and stop of the conveying part.

[0014] Applying the technical solution of the present utility model, the device is arranged at the end of the production and transportation line. Driven by the conveying mechanism of the production line, the workpiece automatically slides above the bearing part. When the first sensing part senses the workpiece, under the action of the control system, the conveying part moves the workpiece from the loading and unloading position to the stopping position until the second sensing part senses the workpiece, and then the conveying part stops working. On the contrary, when it is necessary to transfer the workpiece on the bearing part to the production line, under the action of the control system, the conveying part moves the workpiece from the stopping position to the loading and unloading position until the first sensing part senses that the workpiece leaves the loading and unloading position. With the setting of this solution, under the action of the first sensing part, the second sensing part, the conveying part and the control system, the automatic transfer of the workpiece between the bearing part and the production line is realized, reducing the auxiliary operation of the staff and lowering the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 shows a schematic structural view of the lifting device provided by an embodiment of the present utility model;

[0017] Figure 2 shows a schematic structural view of the bearing part provided by an embodiment of the present utility model;

[0018] Figure 3 shows a partial schematic structural view of the lifting device provided by an embodiment of the present utility model;

[0019] Figure 4 shows a schematic structural view of the bearing frame provided by an embodiment of the present utility model;

[0020] Figure 5 shows a schematic structural view of the support part provided by an embodiment of the present utility model.

[0021] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0022] 00, support part;

[0023] 01, support frame; 02, support plate;

[0024] 10, lifting part;

[0025] 11, bearing part; 111, bearing frame; 112, bearing plate; 1121, avoidance groove; 12, lifting cylinder;

[0026] 13, installation part; 131, installation plate; 132, installation frame;

[0027] 1301. Inductive bracket

[0028] 20. Conveyor section; 21. Driving section; 22. Conveyor roller; 23. Conveyor belt

[0029] 31. First sensing section; 32. Second sensing section

[0030] 40. Third sensing section

[0031] 50. First buffer section

[0032] 60. Guide section

[0033] 70. Second buffer section

[0034] 80. Safety light curtain Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present utility model and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0036] As Figures 1 to 5 shown, the embodiment of the present utility model provides a lifting device, which includes a lifting section 10, a conveyor section 20, a first sensing section 31, a second sensing section 32 and a control system. The lifting section 10 includes a load-bearing section 11 that can be lifted, and the load-bearing section 11 is lifted between a first height and a second height; the conveyor section 20 is arranged on the load-bearing section 11, and the conveyor section 20 has an input state and an output state arranged oppositely. When the conveyor section 20 is in the input state, the conveyor section 20 is used to input the workpiece from the loading and unloading position to the stop position; when the conveyor section 20 is in the output state, the conveyor section 20 is used to convey the workpiece from the stop position to the loading and unloading position; the first sensing section 31 is arranged at the loading and unloading position; the second sensing section 32 is arranged at the stop position; the control system is electrically connected to the first sensing section 31, the second sensing section 32 and the conveyor section 20 respectively; after the first sensing section 31 senses the workpiece, the control system drives the conveyor section 20 to make the conveyor section 20 in the input state until the second sensing section 32 senses the workpiece, and the conveyor section 20 stops the conveying operation; the control system drives the conveyor section 20 to make the conveyor section 20 in the output state until the first sensing section 31 senses that the workpiece leaves the loading and unloading position, and the conveyor section 20 stops the conveying operation.

[0037] Applying the technical solution of the present utility model, this device is arranged at the end of the production and transportation line. Under the drive of the conveying mechanism of the production line, the workpiece automatically slides above the bearing part 11. When the first sensing part 31 senses the workpiece, under the action of the control system, the conveying part 20 moves the workpiece from the loading and unloading position to the stop position until the second sensing part 32 senses the workpiece, and then the conveying part 20 stops operating; on the contrary, when it is necessary to transfer the workpiece on the bearing part 11 to the production line, under the action of the control system, the conveying part 20 moves the workpiece from the stop position to the loading and unloading position until the first sensing part 31 senses that the workpiece leaves the loading and unloading position. With the setting of this solution, under the action of the first sensing part 31, the second sensing part 32, the conveying part 20 and the control system, the automatic transfer of the workpiece between the bearing part 11 and the production line is realized, reducing the auxiliary operation of the staff and lowering the labor intensity of the staff.

[0038] As an exemplary illustration, the device of this solution can be applied to two production lines that are relatively spaced apart in the height direction. In the height direction, the conveying directions of the two production lines are different. This device is arranged on the same side at the ends of the two production lines, where one production line is at the first height and the other production line is at the second height.

[0039] In the embodiment of this solution, the control system is electrically connected to the lifting part 10; when the bearing part 11 is at one of the first height and the second height, and the second sensing part 32 senses the workpiece and the conveying part 20 stops the conveying operation, the control system controls the lifting part 10 to move the bearing part 11 towards the other direction of the first height and the second height; when the bearing part 11 is at one of the first height and the second height, and the first sensing part 31 senses that the workpiece leaves the loading and unloading position and the conveying part 20 stops the conveying operation, the control system controls the lifting part 10 to move the bearing part 11 towards the other direction of the first height and the second height. The automatic control of the lifting part 10 enables it to freely switch between two different heights according to the position of the workpiece and the conveying requirements. Compared with the traditional manual lifting system, the automatic control reduces the waiting time caused by manual height adjustment, thereby improving the overall efficiency of the production line.

[0040] In the embodiment of this solution, the lifting device further includes a third sensing part 40 for detecting the height of the bearing part 11. When the third sensing part 40 senses that the bearing part 11 is at the first height and / or the second height, the control system controls the lifting part 10 to stop operating. The main function of the third sensing part 40 is to detect the vertical position of the bearing part 11 in real time, ensure the precise positioning of the lifting part 10 and the safety of the operation, and improve the reliability of the entire system. Moreover, the control system and the third sensing part 40 cooperate with each other, enabling the lifting part 10 to quickly respond to height changes and improving the operation efficiency.

[0041] As an exemplary illustration, the first height is below the second height. The first production line corresponding to the first height conveys workpieces in the first direction, and the second production line corresponding to the second height conveys workpieces in the opposite direction of the first direction, i.e., the second direction. The loading / unloading position and the stop position are spaced along the first direction. That is, the loading / unloading position is closer to the end of the production line compared to the stop position. The third sensing unit 40 senses the situation where the carrying part 11 is at the first height and the second height and transmits a signal to the control system.

[0042] As Figure 2 and Figure 3 shown, when it is necessary to transfer a workpiece from the first production line to the second production line, the carrying part 11 is first at the first height. Under the conveying action of the first production line, the workpiece is conveyed onto the carrying part 11. The first sensing unit 31 senses the workpiece and feeds back a signal to the control system. The control system drives the conveying unit 20, and the conveying unit 20 conveys the workpiece in the direction of the stop position until the second sensing unit 32 senses the workpiece, and then the conveying unit 20 stops the conveying operation; the control system controls the lifting unit 10 to start, and the carrying part 11 rises in the direction of the second height until the third sensing unit 40 senses the carrying part 11, and then the lifting unit 10 stops operating. The conveying unit 20 is in the output state and conveys the workpiece onto the second production line until the first sensing unit 31 senses that the workpiece has left the loading / unloading position, and then the conveying unit 20 stops the conveying operation; the control system controls the lifting unit 10 to start, and the carrying part 11 descends in the direction of the first height; when the carrying part 11 moves to the first height, the lifting unit 10 stops operating. The above actions complete a workpiece transfer cycle.

[0043] Among them, Figure 2 in it, the X direction is the first direction, and the Y direction is the second direction; Figure 3 in it, the position at a is the position at the first height, and the position at b is the position at the second height.

[0044] In an embodiment of this solution, the lifting device further includes a first buffer unit 50, which is arranged on the carrying part 11 and is located on the side of the stop position away from the loading / unloading position. The first buffer unit 50 is used to buffer and stop the workpiece. During the process of the workpiece being conveyed onto the carrying part 11, the first buffer unit 50 effectively plays a role in stopping, preventing the workpiece from exceeding the predetermined position due to excessive conveying, and ensuring the accurate placement and positioning of the workpiece. Moreover, the first buffer unit 50 has excellent buffering performance, and can slow down its impact force when the workpiece reaches the stop position of the carrying part 11, achieving a smooth stop, thereby avoiding damage to the workpiece caused by a hard landing.

[0045] As Figure 4As shown, further, the conveying unit 20 includes a driving unit 21, a roller assembly, and a conveyor belt 23. Among them, the driving unit 21 is arranged on the bearing unit 11; the roller assembly includes at least two conveying rollers 22, and the at least two conveying rollers 22 are spaced and parallelly distributed along the direction from the loading / unloading position to the stopping position. The conveying rollers 22 extend vertically along the direction from the loading / unloading position to the stopping position, and the conveying rollers 22 are rotatably arranged on the bearing unit 11. The driving unit 21 is drivingly connected to one of the conveying rollers 22; the conveyor belt 23 is sleeved on the outer periphery of the roller assembly, and the conveyor belt 23 is used for conveying workpieces. The driving unit 21 drives the conveyor belt 23 to rotate through the roller assembly. With the above arrangement, the structure is simple and the running stability is relatively strong.

[0046] In an embodiment of this solution, the driving unit 21 includes a motor and a pulley assembly that cooperate with each other. One of the pulleys in the pulley assembly is installed on one of the conveying rollers 22.

[0047] As Figure 3 and Figure 4 As shown, in an embodiment of this solution, the bearing unit 11 includes a bearing frame 111 and a bearing plate 112. The driving unit 21 and the roller assembly are both arranged on the bearing frame 111; the bearing plate 112 is arranged on the top of the bearing frame 111, and the bearing plate 112 is used for bearing workpieces. An avoidance groove 1121 is arranged on the bearing plate 112, and the avoidance groove 1121 extends along the direction from the loading / unloading position to the stopping position. The avoidance groove 1121 is used to avoid the conveyor belt 23 so that the upper surface of the conveyor belt 23 protrudes upward from the top surface of the bearing plate 112. The driving unit 21 and the roller assembly are installed on the bearing frame 111, and the design that the driving unit 21 and the roller assembly are located below the bearing plate 112 optimizes the layout of the overall components, makes the equipment structure more compact, and may also reduce the center of gravity of the overall equipment and improve the stability. Moreover, only the upper surface of the conveyor belt 23 protrudes upward from the top surface of the bearing plate 112. With this arrangement, the cleanliness of the top surface of the bearing plate 112 can be ensured, the possibility of interference between other components and the workpieces is reduced, and the smooth transportation of the workpieces is guaranteed.

[0048] In an embodiment of this solution, the bearing frame 111 is a frame structure in the shape of a roughly cube, and the bearing plate 112 is a horizontally arranged rectangular plate-like structure. The first sensing part 31 is arranged at one end in the length direction of the bearing plate 112, and the second sensing part 32 is close to the end of the bearing plate 112 away from the first sensing part 31.

[0049] Further, the conveyor belt 23 extends along the length direction of the bearing plate 112, and there are two conveyor belts 23. The two conveyor belts 23 are parallelly distributed along the width direction of the bearing plate 112, and the two conveyor belts are respectively arranged close to the two side edges of the bearing plate 112 in the width direction. The first sensing part 31 and the second sensing part 32 are located between the two conveyor belts. The layout of the double conveyor belt 23 helps to stabilize the workpiece during the conveying process and reduce the safety risks caused by the displacement or tumbling of the workpiece. Moreover, the first sensing part 31 and the second sensing part 32 are located between the two conveyor belts 23, ensuring that the first sensing part 31 and the second sensing part 32 can effectively monitor the presence and position of the workpiece, improving the accuracy and reliability of the monitoring.

[0050] As Figure 1 and Figure 5 shown, specifically, the lifting device includes a support part 00. The lifting part 10 includes a lifting cylinder 12, a mounting part 13 and a bearing part 11. The base of the lifting cylinder 12 is arranged on the support part 00, the mounting part 13 is arranged on the piston rod of the lifting cylinder 12, and the bearing part 11 is arranged on the mounting part 13. As the basic part of the lifting device, the support part 00 provides a stable support and mounting platform for the entire lifting part 10. It is usually fixed on the ground or connected to other structural parts of the production line to ensure the overall rigidity and stability.

[0051] In the embodiment of this solution, the support part 00 includes a support frame 01 and a support plate 02. The support frame 01 is generally a vertically arranged cubic frame structure. There are two support plates 02, and the two support plates 02 are arranged on both sides of the relatively arranged support frame 01. The lifting part 10 is arranged on one of the support plates 02, and the bearing part 11 is located between the two support plates 02. The width direction of the bearing part 11 is the same as the distribution direction of the two support plates 02.

[0052] As Figure 3 shown, further, the lifting device further includes a guiding part 60. The guiding part 60 is arranged on the support part 00, and the mounting part 13 is in guiding cooperation with the guiding part 60. The arrangement of the guiding part 60 can improve the stability and smoothness of the lifting process of the mounting part 13, and further ensure the stability and smoothness of the lifting process of the bearing part 11.

[0053] In the embodiment of this solution, the guiding part 60 includes a guide rail extending in the vertical direction. The mounting part 13 is a mounting plate 131 and a mounting frame 132 arranged on the mounting plate 131. A guide groove extending in the vertical direction is arranged on one side of the mounting plate 131 close to the guide rail, and the guide groove is in guiding cooperation with the guide rail. The mounting frame 132 is arranged on the side of the mounting plate 131 away from the guide rail. The bearing part 11 is arranged on the mounting frame 132 through fasteners. At the same time, the bearing part 11 is connected to the mounting plate 131 through fasteners. With such an arrangement, the stability and convenience of the connection between the mounting part 13 and the bearing part 11 can be ensured.

[0054] In an embodiment of the present solution, an induction bracket 1301 is further provided on the side wall of the mounting plate 131. The induction bracket 1301 is at the same height as the bearing part 11. The third sensing part 40 includes a first height sensing part and a second height sensing part. Both the first height sensing part and the second height sensing part are provided on the support part 00. The first height sensing part is located at the first height, and the second height sensing part is located at the second height. The first height sensing part and the second height sensing part are respectively in inductive cooperation with the induction bracket. The first height sensing part and the second height sensing part respectively sense the height of the bearing part 11 through the induction bracket 1301.

[0055] Furthermore, the lifting device further includes a second buffer part 70, which is provided on the support part 00 and is located on one side of the moving direction of the mounting part 13. The second buffer part 70 is used for buffering and stopping the mounting part 13 and / or the bearing part 11. The setting of the second buffer part 70 helps to maintain the stability of the mounting part 13 and the bearing part 11 during the lifting process, especially when approaching the end of the stroke, ensuring precise position control. Moreover, by reducing impact and vibration, the second buffer part 70 helps to extend the service life of each component in the lifting device and reduce the maintenance cost.

[0056] In an embodiment of the present solution, the second buffer part 70 is located above the second height and is used for buffering and stopping the bearing part 11 during the rising process.

[0057] In some other embodiments of the present solution, the second buffer part 70 is located below the first height and is used for buffering and stopping the bearing part 11 during the descending process.

[0058] As Figure 1 and Figure 5 shown, furthermore, the lifting device further includes a safety light curtain 80. The safety light curtain 80 is provided on the top of the support part 00 and is located above the lifting part 10. The safety light curtain 80 is electrically connected to the lifting part 10 through a control system to control the start and stop of the lifting part 10 through the control system. The safety light curtain 80 is electrically connected to the lifting part 10 through a control system. When an abnormal situation is detected or an object or person enters the protection area of the light curtain, the action of the lifting part 10 can be quickly stopped through the control system.

[0059] In some other embodiments of the present solution, the safety light curtain 80 is electrically connected to the conveying part 20 through a control system to control the start and stop of the conveying part 20. The safety light curtain 80 is electrically connected to the conveying part 20 through a control system. When an abnormal situation is detected or an object or person enters the protection area of the light curtain, the action of the conveying part 20 can be quickly stopped through the control system.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0062] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0063] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0064] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0065] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lifting device, characterized in that: The lifting device comprises: A lifting part (10) comprises a load-bearing part (11) that can be lifted and lowered, wherein the load-bearing part (11) is lifted and lowered between a first height and a second height; A conveying portion (20) is arranged on the bearing portion (11), and the conveying portion (20) has an input state and an output state which are arranged relatively to each other. When the conveying portion (20) is in the input state, the conveying portion (20) is used to input the workpiece from the loading and unloading position to the stop position; when the conveying portion (20) is in the output state, the conveying portion (20) is used to transport the workpiece from the stop position to the loading and unloading position; A first sensing part (31) is arranged at the loading and unloading position; A second sensing part (32) is arranged at the stop position; a control system, electrically connected to the first sensing part (31), the second sensing part (32) and the conveying part (20) respectively; After the first sensing part (31) senses the workpiece, the control system drives the conveying part (20) to put the conveying part (20) in the input state until the second sensing part (32) senses the workpiece and the conveying part (20) stops the conveying operation; The control system drives the conveying part (20) to place the conveying part (20) in the output state until the first sensing part (31) senses that the workpiece has left the loading and unloading position, and the conveying part (20) stops the conveying operation.

2. The lifting device according to claim 1, characterized in that: The control system is electrically connected to the lifting part (10); When the carrying portion (11) is at one of the first height and the second height, the second sensing portion (32) senses the workpiece, and after the conveying portion (20) stops conveying, the control system controls the lifting portion (10) to move the carrying portion (11) toward the other direction between the first height and the second height; When the bearing portion (11) is at one of the first height and the second height, the first sensing portion (31) senses that the workpiece has left the loading and unloading position, and after the conveying portion (20) stops conveying, the control system controls the lifting portion (10) to move the bearing portion (11) toward the other direction between the first height and the second height.

3. The lifting device according to claim 2, characterized in that: The lifting device also includes: The third sensing part (40) is used to detect the height of the bearing part (11); when the third sensing part (40) senses that the bearing part (11) is located at the first height and / or the second height, the control system controls the lifting part (10) to stop moving.

4. The lifting device according to claim 1, characterized in that: The lifting device also includes: The first buffer portion (50) is arranged on the bearing portion (11) and is located on a side of the stop position away from the loading and unloading position. The first buffer portion (50) is used to buffer and stop the workpiece.

5. The lifting device according to claim 1, characterized in that: The conveying part (20) comprises: A driving part (21) is arranged on the bearing part (11); A roller assembly, comprising at least two conveying rollers (22), at least two of the conveying rollers (22) being spaced apart and distributed in parallel along the direction from the loading and unloading position to the stop position, the conveying rollers (22) extending vertically from the loading and unloading position to the stop position, the conveying rollers (22) being rotatably arranged on the bearing portion (11), and the driving portion (21) being drivingly connected to one of the conveying rollers (22); A conveyor belt (23) is sleeved on the outer circumference of the roller assembly, and the conveyor belt (23) is used to convey the workpiece. The driving unit (21) drives the conveyor belt (23) to rotate through the roller assembly.

6. The lifting device according to claim 5, characterized in that: The bearing portion (11) comprises: A carrying frame (111), the driving unit (21) and the roller assembly are both arranged on the carrying frame (111); A carrying plate (112) is arranged on the top of the carrying frame (111), the carrying plate (112) is used to carry the workpiece, and an avoidance groove (1121) is provided on the carrying plate (112), the avoidance groove (1121) extends in the direction from the loading and unloading position to the stop position, and the avoidance groove (1121) is used to avoid the conveyor belt (23) so that the upper surface of the conveyor belt (23) protrudes upward from the top surface of the carrying plate (112).

7. The lifting device according to claim 1, characterized in that: The lifting device comprises a supporting part (00), the lifting part (10) comprises a lifting cylinder (12), a mounting part (13) and the bearing part (11), the base of the lifting cylinder (12) is arranged on the supporting part (00), the mounting part (13) is arranged on the piston rod of the lifting cylinder (12), and the bearing part (11) is arranged on the mounting part (13).

8. The lifting device according to claim 7, characterized in that: The lifting device further comprises a guide portion (60), wherein the guide portion (60) is arranged on the support portion (00), and the mounting portion (13) is in guiding cooperation with the guide portion (60).

9. The lifting device according to claim 7, characterized in that: The lifting device also includes: The second buffer portion (70) is arranged on the supporting portion (00) and is located on one side of the moving direction of the mounting portion (13). The second buffer portion (70) is used to buffer and stop the mounting portion (13) and / or the bearing portion (11).

10. The lifting device according to claim 7, characterized in that: The lifting device also includes: A safety grating (80), the safety grating (80) being arranged on the top of the support portion (00) and located above the lifting device; The safety grating (80) is electrically connected to the lifting part (10) through the control system, so as to control the start and stop of the lifting part (10) through the control system; and / or, The safety light barrier (80) is electrically connected to the conveying part (20) through the control system to control the start and stop of the conveying part (20).

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