Jacking device

Abstract

The utility model belongs to hoisting equipment technical field discloses a jacking device. The jacking rod of jacking device is driven along the first direction under the drive of first driving part, when the article placing table and the jacked article placed on the article placing table are lifted to certain height, second driving part drives locking part to move along the second direction, so that the clamping groove is in the first state, the clamping groove carries out the location locking of jacking rod's movement in the first direction, the jacked article is limited to fixed height, and at this moment the pressure of jacked article mostly concentrates on locking part, the pressure that jacked article applied in first driving part is reduced, the wearing degree of first driving part is reduced to a certain extent, prolongs the service life of first driving part. Compared with the cooperation of limiting bolt and through hole, the contact area of clamping groove and clamping part is larger, the stress distribution is more uniform, the local wear or deformation of clamping groove and clamping part is reduced, and the service life of jacking device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a lifting device. Background Technology

[0002] A lifting device is a mechanical device used for vertically lifting or positioning loads. It is widely used in industrial manufacturing, logistics and transportation, construction, and automotive repair. Its core function is to provide stable lifting force through mechanical, hydraulic, pneumatic, or electric means to achieve precise lifting, positioning, or tilting of heavy objects. When lifting heavy objects for extended periods, the lifting rod of the lifting device is prone to wear or deformation, leading to a decrease in the accuracy of the lifting height, and consequently, preventing the object from being lifted to the designated height.

[0003] A lifting and locking mechanism is disclosed in the related technology, including a lifting frame, a lifting mechanism, a fixing frame and a limiting mechanism. The limiting mechanism includes a driving cylinder and a limiting pin. A through hole is opened on the lifting rod so that the limiting pin can be inserted. When the lifting rod moves to the target position, the driving cylinder drives the limiting pin to be inserted into the through hole, thereby realizing the locking and limiting of the lifting rod.

[0004] However, the aforementioned lifting and locking mechanism uses a limit pin and a through hole to lock and limit the lifting rod. When the lifting device lifts heavy objects for a long time, the shear stress on the limit pin is relatively concentrated, which can easily cause the limit pin to deform, resulting in the lifting and locking mechanism being unable to function properly. Utility Model Content

[0005] The purpose of this utility model is to provide a lifting device to solve the technical problem that the existing lifting locking mechanism, which uses a limit pin and a through hole to cooperate, is prone to deformation when lifting heavy objects for a long time, causing the lifting locking mechanism to malfunction.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A lifting device, comprising:

[0008] The lifting mechanism includes a guide, a platform, and a lifting rod. The guide can be connected to an external frame, the platform is connected to the guide, and the lifting rod is connected to the platform. The lifting rod is provided with a locking part, the diameter of which is smaller than the diameter of the lifting rod.

[0009] An actuator includes a support member and a first drive member, the support member being connectable to an external frame, the first drive member being connected to the support member, and the first drive member being configured to drive the lifting rod to reciprocate along a first direction;

[0010] A locking mechanism includes a second driving member and a locking member. The second driving member can be connected to an external frame, and the locking member is connected to the second driving member. The second driving member is configured to drive the locking member to reciprocate along a second direction. The second direction and the first direction are two mutually perpendicular directions in the same plane. The locking member has a slot that extends through the locking member along the first direction. The width of the slot opening is greater than the diameter of the engaging part and less than the diameter of the lifting rod. The slot has a first state of engaging with the engaging part and a second state of disengaging from the engaging part.

[0011] Optionally, the lifting mechanism further includes a lifting seat, which is fixedly connected to the lifting rod, and the lower end face of the lifting seat is flush with the upper surface of the snap-fit ​​portion.

[0012] Optionally, the locking mechanism further includes a guide seat, which is connected to the second driving member. The guide seat has a groove extending along the second direction, and the locking member is movably connected within the groove.

[0013] Optionally, the upper end face of the guide seat is flush with the upper end face of the locking member.

[0014] Optionally, the guide includes a linear bearing and an optical axis. The linear bearing can be connected to an external frame, and the optical axis passes through the linear bearing. The length directions of both the linear bearing and the optical axis are the first direction.

[0015] Optionally, the support member is provided with a first limiting hole, the first limiting hole extends along the first direction, and the diameter of the first limiting hole is greater than the diameter of the optical axis and smaller than the diameter of the linear bearing.

[0016] Optionally, the support member is further provided with a support column, the length direction of the support column is the first direction, and the length of the support column is equal to the length of the linear bearing.

[0017] Optionally, the first driving component includes a push rod, and the end of the lifting rod away from the platform has a connecting hole, into which the push rod can be inserted.

[0018] Optionally, the shelf is provided with a plurality of second limiting holes, which penetrate the shelf along the first direction.

[0019] Optionally, both the first driving component and the second driving component are cylinders.

[0020] The beneficial effects of this utility model are:

[0021] This invention provides a lifting device. The lifting rod of the lifting device moves along a first direction under the drive of a first driving member, lifting the platform and the object placed on the platform to a certain height. Then, a second driving member drives a locking member to move along a second direction, placing the locking slot in a first state. The locking slot limits and locks the movement of the lifting rod in the first direction, confining the object to a fixed height. At this time, most of the pressure from the object is concentrated on the locking member, reducing the pressure exerted on the first driving member and thus reducing wear on the first driving member to some extent, extending its service life. Compared to the fit between a limiting pin and a through hole, the contact surface between the locking slot and the locking part is larger, resulting in a more uniform stress distribution, reducing localized wear or deformation of the locking slot and the locking part, and extending the service life of the lifting device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the lifting device described in an embodiment of the present invention from a first-view perspective;

[0023] Figure 2 This is a schematic diagram of the lifting device described in an embodiment of the present invention from another perspective;

[0024] Figure 3 This is a schematic diagram of the lifting rod and lifting seat described in an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the locking mechanism described in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the lifting mechanism described in an embodiment of the present utility model;

[0027] Figure 6 This is a schematic diagram of the actuator described in an embodiment of the present utility model;

[0028] Figure 7 This is a schematic diagram of the card slot in the first state according to an embodiment of the present invention;

[0029] Figure 8 This is a cross-sectional view of the locking mechanism and the latching part described in the embodiment of this utility model.

[0030] In the picture:

[0031] 1. Lifting mechanism; 11. Guide component; 111. Linear bearing; 112. Optical axis; 12. Table; 121. Second limiting hole; 13. Lifting rod; 131. Snap-fit ​​part; 132. Connecting hole; 14. Lifting seat; 2. Actuating mechanism; 21. Support component; 211. First limiting hole; 212. Support column; 22. First driving component; 221. Push rod; 3. Locking mechanism; 31. Second driving component; 32. Locking component; 321. Slot; 33. Guide seat; 331. Slide groove. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1-8As shown, this utility model provides a lifting device, including a lifting mechanism 1, an execution mechanism 2, and a locking mechanism 3. The lifting mechanism 1 includes a guide member 11, a platform 12, and a lifting rod 13. The guide member 11 can be connected to an external frame, the platform 12 is connected to the guide member 11, and the lifting rod 13 is connected to the platform 12. Specifically, the guide member 11 and the external frame can be bolted or welded together. The platform 12 is slidably connected to the guide member 11, and the lifting rod 13 is fixedly connected to the platform. The lifting rod 13 is provided with a locking part 131, the diameter of which is smaller than the diameter of the lifting rod 13. The actuator 2 includes a support member 21 and a first drive member 22. The support member 21 can be connected to an external frame, and the first drive member 22 is connected to the support member 21. Specifically, the support member 21 and the external frame can be bolted or welded together. The first drive member 22 is bolted to the support member 21 and is configured to drive the lifting rod 13 along a first direction ( Figure 2 The locking mechanism 3 includes a second driving member 31 and a locking member 32. The second driving member 31 can be connected to an external frame, and the locking member 32 is connected to the second driving member 31. Specifically, the second driving member 31 and the external frame can be bolted together. The locking member 32 is connected to the output end of the second driving member 31. The second driving member 31 is configured to drive the locking member 32 along a second direction (X direction). Figure 2 The first direction (Y-direction) reciprocates, and the second direction and the first direction are two mutually perpendicular directions in the same plane. The locking member 32 is provided with a slot 321, which passes through the locking member 32 along the first direction. The width of the slot 321 is greater than the diameter of the engaging part 131 and less than the diameter of the lifting rod 13. The slot 321 has a first state of engaging with the engaging part 131 and a second state of being separated from the engaging part 131.

[0037] Specifically, the guide member 11 can extend and retract along the first direction. When the first driving member 22 drives the lifting rod 13 to reciprocate along the first direction, the guide member 11 can extend or shorten to adapt to the positional changes of the platform 12 and provide guidance and stability for the movement of the platform 12. Under the drive of the first driving member 22, the lifting rod 13 of the lifting device moves along the first direction, lifting the platform 12 and the object placed on the platform 12 to a certain height. Then, the second driving member 31 drives the locking member 32 to move along the second direction, so that the slot 321 is in the first state. The slot 321 limits and locks the movement of the lifting rod 13 in the first direction, limiting the object to a fixed height. At this time, most of the pressure of the object is concentrated on the locking member 32, reducing the pressure exerted by the object on the first driving member 22, reducing the wear of the first driving member 22 to a certain extent, and extending the service life of the first driving member 22. Compared to the combination of the limiting pin and the through hole, the contact surface between the slot 321 and the locking part 131 is larger, and the stress distribution is more uniform. This reduces local wear or deformation of the slot 321 and the locking part 131, and extends the service life of the lifting device.

[0038] Furthermore, such as Figure 3 As shown, the lifting mechanism 1 also includes a lifting seat 14, which is fixedly connected to the lifting rod 13, and the lower end face of the lifting seat 14 is flush with the upper surface of the engaging part 131. When the slot 321 engages with the engaging part 131, the upper surface of the engaging part 131 abuts against the upper end face of the slot wall of the slot 321. The lower end face of the lifting seat 14 is flush with the upper surface of the engaging part 131, so that when the slot 321 engages with the engaging part 131, both the upper surface of the engaging part 131 and the lower end face of the lifting seat 14 abut against the upper end face of the slot wall of the slot 321, which is equivalent to further increasing the contact area between the slot 321 and the engaging part 131, thereby further improving the uniformity of stress distribution applied to the locking member 32 by the lifted object.

[0039] Optionally, such as Figure 4 As shown, the locking mechanism 3 also includes a guide seat 33, which is bolted to the second driving member 31. The guide seat 33 has a groove 331 extending along the second direction, and the locking member 32 is movably connected within the groove 331. The guide seat 33 provides guidance for the reciprocating movement of the locking member 32 along the second direction, preventing the movement direction of the locking member 32 from deviating, which would prevent the slot 321 from engaging with the engaging part 131. It is understood that the locking member 32 and the groove 331 can be slidably connected or rolled, and no specific limitation is made here.

[0040] Furthermore, the upper end face of the guide seat 33 is flush with the upper end face of the locking member 32. When the slot 321 engages with the engaging part 131, the lower end face of the lifting seat 14 simultaneously abuts against the upper end face of the locking member 32 and the upper end face of the guide seat 33, further dispersing the stress on the locking member 32.

[0041] In one embodiment, such as Figure 5 As shown, the guide member 11 includes a linear bearing 111 and an optical shaft 112. The linear bearing 111 has a connecting flange on its exterior, allowing it to be detachably connected to an external frame. The optical shaft 112 passes through the linear bearing 111. Specifically, the optical shaft 112 and the linear bearing 111 can be slidably connected or rolled. The length directions of both the linear bearing 111 and the optical shaft 112 are in a first direction. When the first driving member 22 drives the lifting rod 13 to reciprocate along the first direction, the optical shaft 112 can extend or retract into the linear bearing 111 along the first direction to adapt to changes in the position of the platform 12. In other embodiments, the guide member 11 can also be a structure where a guide post and a connecting sleeve cooperate, which will not be elaborated further here.

[0042] Furthermore, such as Figure 5 and Figure 6 As shown, the length of the optical axis 112 is greater than the length of the linear bearing 111. A first limiting hole 211 is provided on the support member 21, extending along a first direction. The diameter of the first limiting hole 211 is greater than the diameter of the optical axis 112 but smaller than the diameter of the linear bearing 111, and the first limiting hole 211 is coaxial with the optical axis 112. When the lifting rod 13 moves towards the first limiting hole 211 under the drive of the first driving member 22, the optical axis 112 can be inserted into the first limiting hole 211, but the linear bearing 111 cannot be inserted into the first limiting hole 211, thus limiting the linear bearing 111 to the support member 21.

[0043] Optionally, such as Figure 5 As shown, the platform 12 has multiple second limiting holes 121, which extend through the platform 12 along a first direction. Correspondingly, the object being lifted can be provided with a pin that mates with the second limiting hole 121. The pin is inserted into the second limiting hole 121 to prevent the position of the object being lifted from shifting during the lifting process.

[0044] Furthermore, such as Figure 6 As shown, a support column 212 is also provided on the support member 21. The length direction of the support column 212 is the first direction, and the length of the support column 212 is equal to the length of the linear bearing 111. When the linear bearing 111 is positioned on the support member 21, the support column 212 abuts against the lower end face of the shelf 12, which can further improve the stability of the shelf 12.

[0045] For example, such as Figure 3 and Figure 6 As shown, the first driving member 22 includes a push rod 221. Correspondingly, the end of the lifting rod 13 away from the shelf 12 has a connecting hole 132, and the push rod 221 can be inserted into the connecting hole 132. When the first driving member 22 drives the lifting rod 13 to reciprocate along the first direction, the push rod 221 is inserted into the connecting hole 132 to prevent the movement direction of the lifting rod 13 from deviating.

[0046] In this embodiment, both the first driving component 22 and the second driving component 31 are cylinders. Cylinders have a simple structure, low maintenance cost, and excellent safety performance. In other embodiments, the first driving component 22 and the second driving component 31 can be equivalently replaced by hydraulic cylinders or electric push rods, which will not be described in detail here.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lifting device, characterized in that, include: The lifting mechanism (1) includes a guide (11), a platform (12) and a lifting rod (13). The guide (11) can be connected to an external frame. The platform (12) is connected to the guide (11). The lifting rod (13) is connected to the platform (12). The lifting rod (13) is provided with a snap-fit ​​part (131). The diameter of the snap-fit ​​part (131) is smaller than the diameter of the lifting rod (13). The actuator (2) includes a support (21) and a first drive (22), the support (21) being connectable to an external frame, the first drive (22) being connected to the support (21), and the first drive (22) being configured to drive the lifting rod (13) to reciprocate along a first direction; The locking mechanism (3) includes a second driving member (31) and a locking member (32). The second driving member (31) can be connected to an external frame. The locking member (32) is connected to the second driving member (31). The second driving member (31) is configured to drive the locking member (32) to reciprocate along a second direction. The second direction and the first direction are two mutually perpendicular directions in the same plane. The locking member (32) has a slot (321) that passes through the locking member (32) along the first direction. The slot width of the slot (321) is greater than the diameter of the latching part (131) and smaller than the diameter of the lifting rod (13). The slot (321) has a first state of being latched with the latching part (131) and a second state of being separated from the latching part (131).

2. The lifting device according to claim 1, characterized in that, The lifting mechanism (1) further includes a lifting seat (14), which is fixedly connected to the lifting rod (13), and the lower end face of the lifting seat (14) is flush with the upper surface of the snap-fit ​​part (131).

3. The lifting device according to claim 2, characterized in that, The locking mechanism (3) further includes a guide seat (33), which is connected to the second driving member (31). The guide seat (33) has a groove (331) extending along the second direction, and the locking member (32) is movably connected in the groove (331).

4. The lifting device according to claim 3, characterized in that, The upper surface of the guide seat (33) is flush with the upper surface of the locking member (32).

5. The lifting device according to claim 1, characterized in that, The guide member (11) includes a linear bearing (111) and an optical axis (112). The linear bearing (111) can be connected to an external frame. The optical axis (112) passes through the linear bearing (111), and the length directions of the linear bearing (111) and the optical axis (112) are both the first direction.

6. The lifting device according to claim 5, characterized in that, The support member (21) has a first limiting hole (211) extending along the first direction. The diameter of the first limiting hole (211) is larger than the diameter of the optical axis (112) and smaller than the diameter of the linear bearing (111).

7. The lifting device according to claim 5, characterized in that, The support member (21) is also provided with a support column (212), the length direction of the support column (212) is the first direction, and the length of the support column (212) is equal to the length of the linear bearing (111).

8. The lifting device according to claim 1, characterized in that, The first driving member (22) includes a push rod (221), and the lifting rod (13) has a connecting hole (132) at one end away from the platform (12), and the push rod (221) can be inserted into the connecting hole (132).

9. The lifting device according to any one of claims 1-8, characterized in that, The shelf (12) is provided with a plurality of second limiting holes (121), which penetrate the shelf (12) along the first direction.

10. The lifting device according to any one of claims 1-8, characterized in that, Both the first drive unit (22) and the second drive unit (31) are cylinders.

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