A telescopic mechanism

Abstract

This utility model discloses a telescopic mechanism. The telescopic mechanism includes a base; a drive structure mounted on the base; a lifting rod assembly mounted on the base and connected to the drive structure for transmission, the drive structure being able to drive the lifting rod assembly to rise and fall; a sleeve rod sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly, the sleeve rod rising and falling simultaneously when the drive structure drives the lifting rod assembly to rise and fall; and a hook mounted on the outside of the sleeve rod. This utility model proposes a telescopic mechanism that, by setting a sleeve rod sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly, and setting a hook on the outside of the sleeve rod, allows the hook to be arbitrarily set at any height of the sleeve rod, facilitating the lifting of goods within different height ranges.

Description

Technical Field

[0001] This utility model relates to the field of telescopic rod technology, and in particular to a telescopic mechanism. Background Technology

[0002] Existing telescopic poles achieve layered extension and retraction through nested pole sleeves. When carrying goods, the goods can only be connected to the upper end of the pole. As the pole extends or retracts, the upper end of the pole raises and lowers along with the goods, thus achieving the transfer of goods. However, goods can only be attached to the upper end of the pole. When it is necessary to lift goods from the lower part of the pole upwards, the existing telescopic pole is difficult to use. It can only be done manually by lifting the goods from the bottom of the pole to the top, and then using the telescopic pole to lift the goods. This results in an ineffective height for the telescopic pole.

[0003] Therefore, a telescopic mechanism is urgently needed to solve the above problems. Utility Model Content

[0004] This utility model aims to at least partially solve one of the problems existing in the prior art. To this end, this utility model proposes a telescopic mechanism, which sets a sleeve rod to be sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly, and sets a hook on the outside of the sleeve rod so that the hook can be set at any height of the sleeve rod, which is convenient for lifting goods at different heights.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A telescopic mechanism, comprising:

[0007] Base;

[0008] The drive structure is mounted on the base;

[0009] A lifting rod assembly is mounted on the base and is connected to the drive structure for transmission, the drive structure being able to drive the lifting rod assembly to rise and fall;

[0010] A sleeve rod is sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly. When the driving structure drives the lifting rod assembly to rise and fall, the sleeve rod rises and falls simultaneously.

[0011] A hook is installed on the outside of the sleeve rod.

[0012] Optionally, the hook is installed at the lower part of the sleeve rod.

[0013] Optionally, the sleeve rod has a guide hole in the vertical direction and also includes a transmission assembly. The transmission assembly is installed inside the sleeve rod and is connected to the output end of the drive structure. The hook is installed at the output end of the transmission assembly and extends out of the sleeve rod through the guide hole. The drive structure drives the hook to rise and fall relative to the sleeve rod through the transmission assembly.

[0014] Optionally, the lifting rod assembly includes a primary lifting rod and a secondary lifting rod disposed within the primary lifting rod. The secondary lifting rod is connected to the drive structure, and the drive structure is capable of driving the secondary lifting rod to rise and fall relative to the primary lifting rod. The top of the sleeve rod is connected to the top of the secondary lifting rod.

[0015] Optionally, the driving structure includes:

[0016] The drive motor is mounted on the base;

[0017] A reduction gear is mounted on the base and is connected to the output end of the drive motor for transmission.

[0018] A screw sleeve is vertically disposed inside the first-stage lifting rod and is connected to the reduction gear for transmission. The reduction gear can drive the screw sleeve to rotate radially.

[0019] A first screw is vertically disposed inside the secondary lifting rod. The lower part of the first screw is inserted into the screw sleeve and engages with the screw sleeve for transmission. The upper part of the first screw is connected to the secondary lifting rod.

[0020] Optionally, the transmission assembly includes:

[0021] A drive gear is mounted on the upper part of the first screw, and the first screw can drive the drive gear to rotate radially along the first screw;

[0022] The transmission gear meshes with the drive gear for transmission;

[0023] The second screw, the transmission gear is installed at the upper end of the second screw, the second screw is arranged vertically between the sleeve rod and the secondary lifting rod, the upper end of the second screw is connected to the upper end of the sleeve rod, and the lower end of the second screw is connected to the lower end of the sleeve rod;

[0024] A transmission nut is sleeved on the second screw and engages with the second screw for transmission connection, and the hook is connected to the transmission nut.

[0025] Optionally, the driving structure includes:

[0026] The drive motor is mounted on the base;

[0027] A reduction gear is mounted on the base and is connected to the output end of the drive motor for transmission.

[0028] A lead screw and nut assembly is provided, wherein the lead screw is vertically disposed within the first-stage lifting rod and is connected to the reduction gear for transmission. The reduction gear is capable of driving the lead screw to rotate radially, and the nut of the lead screw and nut assembly is connected to the second-stage lifting rod.

[0029] Optionally, the transmission assembly includes:

[0030] A drive gear is mounted on the upper part of the lead screw, and the lead screw can drive the drive gear to rotate radially along the lead screw;

[0031] The transmission gear meshes with the drive gear for transmission;

[0032] The second screw, the transmission gear is installed at the upper end of the second screw, the second screw is arranged vertically between the sleeve rod and the secondary lifting rod, the upper end of the second screw is connected to the upper end of the sleeve rod, and the lower end of the second screw is connected to the lower end of the sleeve rod;

[0033] A transmission nut is sleeved on the second screw and engages with the second screw for transmission connection, and the hook is connected to the transmission nut.

[0034] Compared with the prior art, the present invention has at least the following beneficial effects:

[0035] The retraction mechanism provided by this utility model includes a base, a drive structure, a lifting rod assembly, a sleeve rod, and a hook. The drive structure is mounted on the base. The lifting rod assembly is mounted on the base and is connected to the drive structure for transmission, enabling the drive structure to drive the lifting rod assembly to rise and fall. The sleeve rod is sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly; when the drive structure drives the lifting rod assembly to rise and fall, the sleeve rod rises and falls simultaneously. The hook is mounted on the outside of the sleeve rod. By setting the sleeve rod to be sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly, and by setting the hook on the outside of the sleeve rod, the hook can be arbitrarily set at any height of the sleeve rod, facilitating the lifting of goods within different height ranges. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the telescopic mechanism in its retracted state according to a specific embodiment of this utility model;

[0037] Figure 2 This is a schematic diagram of the telescopic mechanism provided in a specific embodiment of the present invention when it is extended.

[0038] In the picture:

[0039] 1. Base;

[0040] 21. Drive motor; 22. Reduction gear; 23. Screw sleeve; 24. First screw;

[0041] 3. Sleeve;

[0042] 41. Second screw; 42. Drive gear; 43. Transmission gear; 44. Transmission nut;

[0043] 5. Hooks;

[0044] 6. First-level lifting boom;

[0045] 7. Secondary lifting boom. Detailed Implementation

[0046] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0047] Please refer to Figure 1 and Figure 2 This utility model provides a telescopic mechanism, including a base 1, a drive structure, a lifting rod assembly, a sleeve rod 3, and a hook 5. The drive structure is mounted on the base 1. The lifting rod assembly is mounted on the base 1 and is connected to the drive structure for transmission, enabling the drive structure to drive the lifting rod assembly to rise and fall. The sleeve rod 3 is sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly; when the drive structure drives the lifting rod assembly to rise and fall, the sleeve rod 3 rises and falls simultaneously. The hook 5 is mounted on the outside of the sleeve rod 3. By setting the sleeve rod 3 to be sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly, and by setting the hook 5 on the outside of the sleeve rod 3, the hook 5 can be arbitrarily set at any height of the sleeve rod 3, facilitating the lifting of goods within different height ranges.

[0048] Optionally, the hook 5 is installed at the lower part of the sleeve rod 3 so that the goods can be hooked on the hook 5 at a lower position without having to raise the goods to the top of the lifting rod assembly and hook them on the top of the lifting rod (for example, in this embodiment, it is only necessary to hook the goods on the hook 5 at the lower position, without having to raise the goods to hook them on the top of the secondary lifting rod 7).

[0049] Optionally, the sleeve rod 3 has a guide hole in the vertical direction and also includes a transmission assembly. The transmission assembly is installed inside the sleeve rod 3 and is connected to the output end of the drive structure. The hook 5 is installed at the output end of the transmission assembly and extends out of the sleeve rod 3 through the guide hole. The drive structure drives the hook 5 to rise and fall relative to the sleeve rod 3 through the transmission assembly, thereby enabling the hook 5 to rise and fall along the sleeve rod 3, further increasing the lifting height of the goods. The guide hole allows the hook 5 to slide and rise and fall stably along the sleeve rod 3.

[0050] Optionally, the lifting rod assembly includes a primary lifting rod 6 and a secondary lifting rod 7 disposed within the primary lifting rod 6. The secondary lifting rod 7 is connected to a drive structure, which can drive the secondary lifting rod 7 to rise and fall relative to the primary lifting rod 6. The top of the sleeve rod 3 is connected to the top of the secondary lifting rod 7. When the drive structure drives the secondary lifting rod 7 to rise and fall relative to the primary lifting rod 6, the sleeve rod 3 also rises and falls accordingly. When the secondary lifting rod 7 is lowered to its lowest position, the sleeve rod 3 is fitted onto the outside of the primary lifting rod 6; when the secondary lifting rod 7 is raised to its highest position, the sleeve rod 3 is fitted onto the outside of the secondary lifting rod 7.

[0051] Optionally, in this embodiment, the drive structure includes a drive motor 21, a reduction gear 22, a screw sleeve 23, and a first screw 24. The drive motor 21 is mounted on the base 1. The reduction gear 22 is mounted on the base 1 and is connected to the output end of the drive motor 21. The screw sleeve 23 is vertically disposed within the first-stage lifting rod 6 and is connected to the reduction gear 22, which can drive the screw sleeve 23 to rotate radially. The first screw 24 is vertically disposed within the second-stage lifting rod 7, with its lower part inserted into the screw sleeve 23 and engaged with it, and its upper part connected to the second-stage lifting rod 7. When the drive motor 21 is running, it drives the screw sleeve 23 to rotate via the reduction gear 22, thereby causing the first screw 24 to rise and fall.

[0052] Optionally, the transmission assembly includes a drive gear 42, a transmission gear 43, a second screw 41, and a transmission nut 44. The drive gear 42 is mounted on the upper part of the first screw 24, and the first screw 24 can drive the drive gear 42 to rotate radially along the first screw 24. The transmission gear 43 meshes with the drive gear 42 for transmission. The second screw 41 and transmission gear 43 are mounted on its upper end. The second screw 41 is vertically positioned between the sleeve rod 3 and the secondary lifting rod 7. The upper end of the second screw 41 is connected to the upper end of the sleeve rod 3, and the lower end of the second screw 41 is connected to the lower end of the sleeve rod 3. The transmission nut 44 is sleeved on the second screw 41 and meshes with it for transmission. The hook 5 is connected to the transmission nut 44. When the first screw 24 rotates, the drive gear 42 rotates, which in turn drives the transmission gear 43 to rotate. The transmission gear 43 drives the second screw 41 to rotate, which in turn drives the transmission nut 44 to rise and fall along the second screw 41, thereby causing the hook 5 connected to the transmission nut 44 to rise and fall along the sleeve 3.

[0053] In some other embodiments, the drive structure optionally includes a drive motor 21, a reduction gear 22, and a lead screw and nut pair. The drive motor 21 is mounted on the base 1. The reduction gear 22 is mounted on the base 1 and is driven by the output end of the drive motor 21. The lead screw of the lead screw and nut pair is vertically disposed within the primary lifting rod 6 and is driven by the reduction gear 22. The reduction gear 22 can drive the lead screw to rotate radially. The nut of the lead screw and nut pair is connected to the secondary lifting rod 7, thereby realizing the lifting and lowering of the secondary lifting rod 7.

[0054] Optionally, the transmission assembly includes a drive gear 42, a transmission gear 43, a second screw 41, and a transmission nut 44. The drive gear 42 is mounted on the upper part of the lead screw, and the lead screw can drive the drive gear 42 to rotate radially along the lead screw. The transmission gear 43 meshes with the drive gear 42 for transmission. The transmission gear 43 is mounted on the upper end of the second screw 41, which is vertically positioned between the sleeve 3 and the secondary lifting rod 7. The upper end of the second screw 41 is connected to the upper end of the sleeve 3, and the lower end of the second screw 41 is connected to the lower end of the sleeve 3. The transmission nut 44 is sleeved on the second screw 41 and meshes with it for transmission. The hook 5 is connected to the transmission nut 44. When the lead screw rotates, the drive gear 42 rotates, which in turn drives the transmission gear 43 to rotate. The transmission gear 43 drives the second screw 41 to rotate, which in turn drives the transmission nut 44 to rise and fall along the second screw 41, thereby causing the hook 5 connected to the transmission nut 44 to rise and fall along the sleeve 3.

[0055] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A telescopic mechanism, characterized in that, include: Base (1); A drive structure is mounted on the base (1); A lifting rod assembly is mounted on the base (1) and is connected to the drive structure for transmission. The drive structure is capable of driving the lifting rod assembly to lift. The sleeve (3) is sleeved on the outside of the lifting rod assembly and connected to the top of the lifting rod assembly. When the driving structure drives the lifting rod assembly to rise and fall, the sleeve (3) rises and falls simultaneously. The hook (5) is installed on the outside of the sleeve (3).

2. The telescopic mechanism according to claim 1, characterized in that, The hook (5) is installed on the lower part of the sleeve (3).

3. The telescopic mechanism according to claim 2, characterized in that, The sleeve rod (3) has a guide hole along the vertical direction and also includes a transmission component. The transmission component is installed inside the sleeve rod (3) and is connected to the output end of the drive structure. The hook (5) is installed at the output end of the transmission component and extends out of the sleeve rod (3) through the guide hole. The drive structure drives the hook (5) to rise and fall relative to the sleeve rod (3) through the transmission component.

4. The telescopic mechanism according to claim 3, characterized in that, The lifting rod assembly includes a primary lifting rod (6) and a secondary lifting rod (7) disposed within the primary lifting rod (6). The secondary lifting rod (7) is connected to the drive structure, which is capable of driving the secondary lifting rod (7) to rise and fall relative to the primary lifting rod (6). The top of the sleeve rod (3) is connected to the top of the secondary lifting rod (7).

5. The telescopic mechanism according to claim 4, characterized in that, The driving structure includes: A drive motor (21) is mounted on the base (1); A reduction gear (22) is mounted on the base (1) and is connected to the output end of the drive motor (21) for transmission. A screw sleeve (23) is vertically disposed inside the first-stage lifting rod (6) and is connected to the reduction gear (22) for transmission. The reduction gear (22) can drive the screw sleeve (23) to rotate radially. The first screw (24) is vertically disposed inside the secondary lifting rod (7). The lower part of the first screw (24) is inserted into the screw sleeve (23) and engaged with the screw sleeve (23) for transmission. The upper part of the first screw (24) is connected to the secondary lifting rod (7).

6. The telescopic mechanism according to claim 5, characterized in that, The transmission assembly includes: A drive gear (42) is mounted on the upper part of the first screw (24), and the first screw (24) is capable of driving the drive gear (42) to rotate radially along the first screw (24); The transmission gear (43) meshes with the drive gear (42) for transmission; The second screw (41) is installed at the upper end of the transmission gear (43). The second screw (41) is arranged vertically between the sleeve (3) and the secondary lifting rod (7). The upper end of the second screw (41) is connected to the upper end of the sleeve (3), and the lower end of the second screw (41) is connected to the lower end of the sleeve (3). The transmission nut (44) is sleeved on the second screw (41) and engages with the second screw (41) for transmission connection. The hook (5) is connected to the transmission nut (44).

7. The telescopic mechanism according to claim 4, characterized in that, The driving structure includes: A drive motor (21) is mounted on the base (1); A reduction gear (22) is mounted on the base (1) and is connected to the output end of the drive motor (21) for transmission. A lead screw and nut assembly is provided, wherein the lead screw is arranged vertically inside the first-stage lifting rod (6) and is connected to the reduction gear (22) for transmission. The reduction gear (22) can drive the lead screw to rotate radially, and the nut of the lead screw and nut assembly is connected to the second-stage lifting rod (7).

8. The telescopic mechanism according to claim 7, characterized in that, The transmission assembly includes: A drive gear (42) is mounted on the upper part of the lead screw, and the lead screw is capable of driving the drive gear (42) to rotate radially along the lead screw; The transmission gear (43) meshes with the drive gear (42) for transmission; The second screw (41) is installed at the upper end of the transmission gear (43). The second screw (41) is arranged vertically between the sleeve (3) and the secondary lifting rod (7). The upper end of the second screw (41) is connected to the upper end of the sleeve (3), and the lower end of the second screw (41) is connected to the lower end of the sleeve (3). The transmission nut (44) is sleeved on the second screw (41) and engages with the second screw (41) for transmission connection. The hook (5) is connected to the transmission nut (44).

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