Double-end worm type rotary drive

Abstract

The utility model discloses a double-end worm type rotary drive in the technical field of rotary drives, which comprises a rotary drive, an end cover and a transmission shaft, a mounting hole matched with the transmission shaft is arranged in the middle of the end cover, a first oil passage is arranged on the upper portion of the end cover, a second oil passage is arranged at one end of the first oil passage, and a worm is arranged in the second oil passage. An overflow groove is formed in the surface of the transmission shaft, a mounting groove is formed in the inner wall of the mounting hole, a sealing ring is arranged in the mounting groove, a mounting opening is formed in the bottom of the end cover, a clamping opening is formed in one end of the mounting opening, and a plastic dustproof cover is arranged in the mounting opening. Lubricating oil in the rotary drive permeates into the gap between the transmission shaft and the end cover and flows to the second oil duct through the first oil duct, one end of the second oil duct leads to the interior of the rotary drive, the lubricating oil flows back into the rotary drive, and the lubricating oil cannot leak through the gap between the transmission shaft and the end cover when the rotary drive is used.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drive, in particular to a double-head worm type rotary drive. Background Art

[0002] The rotary drive is widely used in various industries due to its simple structure and easy maintenance. The rotary drive often has poor sealing effect, and the lubricating oil in the rotary drive leaks out from the gap between the connection between the motor and the drive shaft and the rotary drive. It is necessary to frequently add lubricating oil to the rotary drive to ensure the operation of the rotary drive. For example, the sealing ring provided in the gear meshing vertical rotary drive device (patent number: CN201520395931.6) disclosed in the Chinese patent literature only seals the steel ball between the outer gear ring and the inner ring, and does not seal the entire rotary drive. The remaining structures inside the rotary drive also need to be lubricated. Sealing the steel ball alone cannot ensure the lubrication effect of the remaining structures in the rotary drive. At the same time, dust enters the rotary drive through the gap between the rotary drive transmission bearing and the rotary drive, affecting the operating state of the rotary drive.

[0003] For this purpose, we propose a double-headed worm-type slewing drive. Utility Model Content

[0004] The purpose of the utility model is to provide a double-headed worm type rotary drive to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-headed worm type rotary drive, comprising a rotary drive, an end cover and a transmission shaft, a mounting hole matching the transmission shaft is arranged in the middle of the end cover, a first oil channel is arranged on the upper part of the end cover, a second oil channel is arranged at one end of the first oil channel, an overflow groove is arranged on the surface of the transmission shaft, a mounting groove is arranged on the inner wall of the mounting hole, a sealing ring is arranged in the mounting groove, a mounting port is arranged at the bottom of the end cover, a bayonet is arranged at one end of the mounting port, a plastic dust cover is arranged in the mounting port, a push rod is arranged on the side of the plastic dust cover, and a clamping block is arranged on the push rod.

[0006] Furthermore, the second oil passage is communicated with the first oil passage, the second oil passage is arranged at an angle, and two groups of the first oil passage and the second oil passage are arranged.

[0007] Furthermore, the push rod is embedded in the outer ring of the plastic dust cover, and the push rod is fixedly connected to the plastic dust cover.

[0008] Furthermore, the first oil channel is flush with the overflow groove provided on the transmission shaft.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The lubricating oil in the slewing drive seeps into the gap between the transmission shaft and the end cover. When the lubricating oil reaches the first oil passage, it flows to the second oil passage through the first oil passage. One end of the second oil passage leads to the inside of the slewing drive, so that the lubricating oil flows back into the slewing drive. When the slewing drive is in use, the lubricating oil will not leak through the gap between the transmission shaft and the end cover, so that the slewing drive can be used for a long time without adding lubricating oil. The overflow groove provides temporary storage for the lubricating oil, so that the lubricating oil has enough time to flow into the slewing drive through the first oil passage and the second oil passage.

[0011] 2. Push the plastic dust cover. The push rod set on the side of the plastic dust cover is installed into the installation opening together with the plastic dust cover. When the clamping block set on the push rod contacts the inner wall of the installation opening, the upper end of the push rod is driven to move to the left. The push rod is tilted at this time, causing the plastic dust cover to deform slightly. When the plastic dust cover is installed into the installation opening, the clamping block moves to a position flush with the clamping port, and the plastic dust cover is restored, so that the push rod drives the clamping block to clamp the clamping port, completing the quick installation of the plastic dust cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the end cover structure of the utility model;

[0014] Figure 3 This is an enlarged view of point A of the utility model;

[0015] Figure 4 It is an enlarged view of point B of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the second oil passage of the utility model;

[0017] Figure 6 This is a schematic diagram of the push rod installation structure of the utility model.

[0018] In the figure: 1. rotary drive; 2. end cover; 3. transmission shaft; 4. first oil channel; 5. second oil channel; 6. overflow groove; 7. mounting groove; 8. sealing ring; 9. mounting port; 10. bayonet; 11. plastic dust cover; 12. push rod; 13. clamping block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-6 The utility model provides a technical solution: a double-headed worm type rotary drive, including a rotary drive 1, an end cover 2 and a transmission shaft 3, a mounting hole 21 matched with the transmission shaft 3 is arranged in the middle of the end cover 2, a first oil passage 4 is arranged on the upper part of the end cover 2, a second oil passage 5 is arranged at one end of the first oil passage 4, an overflow groove 6 is arranged on the surface of the transmission shaft 3, a mounting groove 7 is arranged on the inner wall of the mounting hole 21, a sealing ring 8 is arranged in the mounting groove 7, a mounting port 9 is arranged at the bottom of the end cover 2, a bayonet 10 is arranged at one end of the mounting port 9, and a A plastic dust cover 11 is provided with a push rod 12 on the side of the plastic dust cover 11, and a clamping block 13 is provided on the push rod 12. When the lubricating oil in the rotary drive passes through the gap between the transmission shaft 3 and the end cover 2, when the lubricating oil reaches the first oil passage 4, it flows to the second oil passage 5 through the first oil passage 4. One end of the second oil passage 5 leads to the inside of the rotary drive, so that the lubricating oil flows back into the rotary drive, so that the lubricating oil will not leak through the gap between the transmission shaft 3 and the end cover 2 when the rotary drive is in use, so that the rotary drive can be used for a long time without adding lubricating oil, and the end cover 2 is not provided with a plastic dust cover 11. A sealing ring 8 is arranged in the cover 2, and an overflow groove 6 is arranged on the transmission shaft 3. The sealing ring blocks the lubricating oil that penetrates into the transmission shaft 3 and the end cover 2. The overflow groove 6 provides temporary storage for the lubricating oil so that the lubricating oil has enough time to flow into the rotary drive through the first oil channel 4 and the second oil channel 5. The plastic dust cover 11 prevents dust from penetrating into the gap between the transmission shaft 3 and the end cover 2. The plastic dust cover 11 is made of plastic material and can be slightly bent. The plastic dust cover 11 is installed to push the plastic dust cover The cover 11 and the push rod 12 arranged on the side of the plastic dust cover 11 are installed into the installation opening 7 together with the plastic dust cover 11. When the block arranged on the push rod 12 contacts the inner wall of the installation opening 9, the upper end of the push rod 12 is driven to move to the left. The push rod 12 is tilted at this time, causing the plastic dust cover 11 to be slightly deformed. When the plastic dust cover 11 is installed into the installation opening 9, the block 13 moves to a position flush with the bayonet 10, and the plastic dust cover 11 is restored, so that the push rod 12 drives the block 13 to clamp the bayonet 10, thereby completing the quick installation of the plastic dust cover 11.

[0021] Among them, the second oil passage 5 is communicated with the first oil passage 4, the second oil passage 5 is inclined, and the first oil passage 4 and the second oil passage 5 are each provided with two groups, and the lubricating oil that penetrates into the gap between the transmission shaft 3 and the end cover 2 quickly flows back to the rotary drive through the two groups of the first oil passage 4 and the second oil passage 5;

[0022] The push rod 12 is embedded in the outer ring of the plastic dust cover 11. The side of the push rod 12 is set to be arc-shaped, and the curvature is consistent with the circumferential curvature of the plastic dust cover 11. The plastic dust cover 11 has a good dustproof effect. The push rod 12 is fixedly connected to the plastic dust cover 11, and the first oil channel 4 is flush with the overflow groove 6 set on the transmission shaft 3.

[0023] Working principle: The lubricating oil in the rotary drive passes through the gap between the transmission shaft 3 and the end cover 2. When the lubricating oil reaches the first oil channel 4, it flows to the second oil channel 5 through the first oil channel 4. One end of the second oil channel 5 leads to the inside of the rotary drive, so that the lubricating oil flows back into the rotary drive, so that the lubricating oil will not leak through the gap between the transmission shaft 3 and the end cover 2 when the rotary drive is in use, so that the rotary drive can be used for a long time without adding lubricating oil. A sealing ring 8 is arranged in the end cover 2, and an overflow groove 6 is arranged on the transmission shaft 3. The sealing ring blocks the lubricating oil that penetrates between the transmission shaft 3 and the end cover 2. The overflow groove 6 provides temporary storage for the lubricating oil, so that the lubricating oil has enough time to flow into the rotary drive through the first oil channel 4 and the second oil channel 5. The plastic dust cover 11 is for the transmission shaft 3. Dust is prevented between the driving shaft 3 and the end cover 2 to prevent dust from penetrating into the gap between the driving shaft 3 and the end cover 1. The plastic dust cover 11 is made of plastic material and can be slightly bent. The plastic dust cover 11 is installed by pushing the plastic dust cover 11. The push rod 12 set on the side of the plastic dust cover 11 is installed into the installation port 7 together with the plastic dust cover 11. When the block set on the push rod 12 contacts the inner wall of the installation port 9, the upper end of the push rod 12 is driven to move to the left. The push rod 12 is tilted at this time, causing the plastic dust cover 11 to be slightly deformed. When the plastic dust cover 11 is installed into the installation port 9, the block 13 moves to the flush position of the bayonet 10, and the plastic dust cover 11 is restored, so that the push rod 12 drives the block 13 to clamp the bayonet 10, thereby completing the quick installation of the plastic dust cover 11.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-headed worm type rotary drive, comprising a rotary drive (1), an end cover (2) and a transmission shaft (3), characterized in that: The middle of the end cover (2) is provided with a mounting hole (21) matched with the transmission shaft (3); the upper part of the end cover (2) is provided with a first oil passage (4); one end of the first oil passage (4) is provided with a second oil passage (5); the surface of the transmission shaft (3) is provided with an overflow groove (6); the inner wall of the mounting hole (21) is provided with a mounting groove (7); a sealing ring (8) is provided in the mounting groove (7); the bottom of the end cover (2) is provided with a mounting opening (9); one end of the mounting opening (9) is provided with a bayonet (10); a plastic dust cover (11) is provided in the mounting opening (9); a push rod (12) is provided on the side of the plastic dust cover (11); and a clamping block (13) is provided on the push rod (12).

2. A double-headed worm type rotary drive according to claim 1, characterized in that: The second oil passage (5) is communicated with the first oil passage (4), the second oil passage (5) is arranged obliquely, and the first oil passage (4) and the second oil passage (5) are each provided with two groups.

3. A double-headed worm type rotary drive according to claim 1, characterized in that: The push rod (12) is embedded in the outer ring of the plastic dust cover (11), and the push rod (12) is fixedly connected to the plastic dust cover (11).

4. A double-headed worm type rotary drive according to claim 1, characterized in that: The first oil channel (4) is flush with an overflow groove (6) provided on the transmission shaft (3).

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