Double-screw synchronous lifting platform

Abstract

The invention discloses a double-screw synchronous lifting platform which comprises a base, two driving screws vertically connected to the upper portion of the base through shaft sleeves, and a sliding platform located on the upper portion of the base and connected with the two driving screws through two nuts. The transmission shaft, the transmission gear and the transmission chain are used for synchronously driving the two driving screw rods; and when the two driving screw rods rotate synchronously, the sliding platform moves up and down along the two driving screw rods. According to the synchronous lifting platform, the two driving screw rods are simultaneously driven by the same driving transmission shaft, and synchronous rotation of the two driving screw rods is achieved. The synchronous lifting platform is high in stability, controllable in speed and stroke and good in supporting strength, can be applied to precision machining of large-mass products, and has important application and popularization value.

Description

Technical Field

[0001] This invention relates to a twin-screw synchronous lifting platform, belonging to the field of parts assembly. Background Technology

[0002] Lifting platforms are frequently used in product processing and assembly. Traditional lifting platforms typically employ drive devices such as screws or hydraulic cylinders. Due to the high stability and controllable speed and stroke of screw drives, screw-driven lifting platforms are widely used in fields requiring precision operation. Traditional screw-driven lifting platforms often use a single drive screw, primarily because synchronizing multiple screws becomes a processing challenge. For the processing and assembly of certain large products, lifting platforms using single drive screws struggle to guarantee their support strength and driving stability. Therefore, achieving synchronous driving of multiple screws has become a pressing issue to be addressed in the processing and assembly of large products. Summary of the Invention

[0003] The purpose of this invention is to provide a twin-screw synchronous lifting platform to solve the shortcomings of traditional single-screw driven lifting platforms, such as insufficient support strength and poor driving stability when used for processing large precision products.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] The present invention provides a twin-screw synchronous lifting platform, comprising a base, two drive screws vertically connected above the base via bushings, a sliding platform located above the base and connected to the two drive screws via two nuts, and a transmission shaft, transmission gears, and transmission chains for synchronously driving the two drive screws; when the two drive screws rotate synchronously, the sliding platform moves up and down along the two drive screws.

[0006] The drive shaft includes a lower drive shaft located below the base and horizontally connected by a bushing, two upper drive shafts horizontally connected to the outside of the two drive screws via bearing seats, and an active drive shaft horizontally connected to the outside of any one of the drive screws via bearing seats.

[0007] The transmission gears include bevel gears fixed to the upper ends of the two drive screws, bevel gears fixed to the inner sides of the two upper transmission shafts, transmission gears fixed to the outer sides of the two upper transmission shafts, two transmission gears fixed to both ends of the lower transmission shaft, and two transmission gears fixed to the front end of the drive transmission shaft.

[0008] The inner bevel gears of the two upper drive shafts mesh with the bevel gears at the upper end of the drive screw on the same side, respectively; of the two drive gears at the front end of the drive shaft, one drive gear is connected to the drive gear on the outer side of the upper drive shaft on the same side via a drive chain, and the other drive gear is connected to the drive gear on the same side of the lower drive shaft via a drive chain; the drive gear on the other side of the lower drive shaft is connected to the drive gear on the outer side of the upper drive shaft on the same side via a drive chain.

[0009] Work process

[0010] When the platform is raised or lowered, the main drive shaft rotates, driving two drive gears at its front end to rotate. One of these drive gears drives the upper drive shaft on the same side to rotate via a drive chain. This upper drive shaft, through its inner bevel gear, drives the drive screw meshing with it to rotate. Simultaneously, the other drive gear on the main drive shaft drives the lower drive shaft to rotate via a drive chain. This lower drive shaft, through its drive chain, drives the upper drive shaft on the other side to rotate. This upper drive shaft, through its inner bevel gear, drives the drive screw meshing with it to rotate. Since the rotation of both drive screws is driven by the same drive shaft, the two drive screws can rotate synchronously, thereby driving the sliding platform connected to them to move stably up and down.

[0011] A rotating handle is connected to the outer end of the main drive shaft.

[0012] The upper sections of the two drive screws are connected to two upper support seats via bushings. The two upper support seats limit the upward movement of the sliding platform and enhance the support stability of the two drive screws.

[0013] Beneficial effects

[0014] The synchronous lifting platform of this invention simultaneously drives two drive screws via the same active transmission shaft, achieving synchronous rotation of the two drive screws. The synchronous lifting platform exhibits high stability, controllable speed and stroke, and good support strength, making it suitable for precision machining of large-weight products and possessing significant value for widespread application. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the synchronous lifting platform of the present invention;

[0016] In the diagram, 1-base; 2-sliding platform; 3-drive screw; 4-lower drive shaft; 5-upper drive shaft; 6-drive shaft; 7-rotating handle; 8-upper support. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Example

[0019] like Figure 1 As shown, a twin-screw synchronous lifting platform of the present invention includes a base 1, two drive screws 3 vertically connected above the base 1 by bushings, a sliding platform 2 located above the base 1 and connected to the two drive screws by two nuts, and a transmission shaft, transmission gears and transmission chains for synchronously driving the two drive screws; when the two drive screws rotate synchronously, the sliding platform 2 moves up and down along the two drive screws.

[0020] The drive shaft includes a lower drive shaft 4 located below the base 1 and horizontally connected by a bushing, two upper drive shafts 5 horizontally connected to the outside of the two drive screws via bearing seats, and an active drive shaft 6 horizontally connected to the outside of any one of the drive screws via bearing seats.

[0021] The transmission gears include bevel gears fixed to the upper ends of the two drive screws, bevel gears fixed to the inner sides of the two upper transmission shafts, transmission gears fixed to the outer sides of the two upper transmission shafts, two transmission gears fixed to both ends of the lower transmission shaft 4, and two transmission gears fixed to the front end of the drive transmission shaft 6.

[0022] The inner bevel gears of the two upper drive shafts mesh with the bevel gears at the upper end of the drive screw on the same side, respectively; of the two drive gears at the front end of the drive shaft 6, one drive gear is connected to the drive gear on the outer side of the upper drive shaft on the same side via a drive chain, and the other drive gear is connected to the drive gear on the same side of the lower drive shaft 4 via a drive chain; the drive gear on the other side of the lower drive shaft 4 is connected to the drive gear on the outer side of the upper drive shaft on the same side via a drive chain.

[0023] Work process

[0024] When the platform is raised or lowered, the main drive shaft is rotated, which drives the two drive gears at its front end to rotate. One of the drive gears drives the upper drive shaft on the same side to rotate via a drive chain. The upper drive shaft drives the drive screw meshing with it to rotate via an inner bevel gear. At the same time, the other drive gear of the main drive shaft drives the lower drive shaft 4 to rotate via a drive chain. The lower drive shaft 4 drives the upper drive shaft on the other side to rotate via a drive chain. The upper drive shaft drives the drive screw meshing with it to rotate via an inner bevel gear. Since the rotation of the two drive screws is driven by the same drive shaft 6, the two drive screws can rotate synchronously, thereby driving the sliding platform 2 connected to it to move up and down stably.

[0025] The outer end of the main drive shaft is connected to a rotating handle 7.

[0026] The upper sections of the two drive screws are connected to two upper support seats 8 via bushings. The two upper support seats limit the upward movement of the sliding platform 2 and enhance the support stability of the two drive screws.

Claims

1. A twin screw synchronous lifting platform, characterized in that: The device comprises a base, two driving screws vertically connected to the base through shaft sleeves, a sliding platform above the base and connected to the two driving screws through two nuts respectively, a transmission shaft, transmission gears and transmission chains for synchronously driving the two driving screws; when the two driving screws rotate synchronously, the sliding platform moves up and down along the two driving screws; The transmission shaft comprises a lower transmission shaft connected to the base through a shaft sleeve, two upper transmission shafts connected to the outer sides of the two driving screws through bearing seats, and a driving transmission shaft connected to the outer side of any driving screw through a bearing seat; The transmission gears comprise two conical gears fixed to the upper ends of the two driving screws respectively, two conical gears fixed to the inner sides of the two upper transmission shafts respectively, two transmission gears fixed to the outer sides of the two upper transmission shafts respectively, two transmission gears fixed to the two ends of the lower transmission shaft, and two transmission gears fixed to the front end of the driving transmission shaft; The conical gears on the inner sides of the two upper transmission shafts are engaged with the conical gears on the upper ends of the driving screws on the same side respectively; one of the two transmission gears on the front end of the driving transmission shaft is connected to the transmission gear on the outer side of the upper transmission shaft on the same side through a transmission chain, and the other transmission gear is connected to the transmission gear on the same side of the lower transmission shaft through a transmission chain; the transmission gear on the other side of the lower transmission shaft is connected to the transmission gear on the outer side of the upper transmission shaft on the same side through a transmission chain.

2. A twin screw synchronous lifting platform as claimed in claim 1, characterized in that: The outer end of the main transmission shaft is connected with a rotating handle.

3. A twin screw synchronous lifting platform as claimed in claim 1, characterized in that: The upper sections of the two driving screws are connected with two upper support seats through shaft sleeves respectively.

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