Air curtain water-blocking gantry main shaft

Abstract

The utility model discloses an air curtain water-blocking gantry main shaft which comprises a shell, bearings, a shaft core, a front cover, a rear cover, a narrow opening and an air channel, the inner wall of the shell is provided with a set of bearings which are coaxially aligned, the shaft core is arranged in the bearings, the front cover and the rear cover are arranged at the two ends of the shell, and the two ends of the shaft core penetrate out of the front cover and the rear cover. The front cover is tightly attached to the outer wall of the shaft core to form an abutted seam, the front cover is provided with a narrow opening in the inclined outer side of the abutted seam, and the narrow opening is connected with the air channel to enable the outer wall of the shaft core to form an air curtain. According to the air curtain water-blocking gantry main shaft, the front cover is modified to form the narrow opening, so that compressed air can be externally connected to form an air curtain on the outer wall of the shaft core so as to achieve the purpose of water blocking, the air curtain completely covers the shaft core, the main shaft running at a high speed is fully protected in a waterproof mode, and the service life of the main shaft is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the field of gantry spindles, in particular to an air curtain water-blocking gantry spindle. Background Art

[0002] There is a gap between the front cover and the shaft core of the gantry spindle, and water seepage occurs during high-speed operation. The existing technology uses a water storage tank to add a water storage tank on the outer wall of the shaft core to intercept and discharge the seepage water, but the sealing effect is limited, and corrosion caused by water seepage can still be found in the shell. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide an air curtain water-blocking gantry spindle. Since the front cover is modified to form a narrow opening, compressed gas can be connected externally to form an air curtain on the outer wall of the shaft core to achieve the purpose of water blocking. The air curtain fully covers the shaft core, so that the high-speed running spindle is fully protected from water and its service life is greatly extended.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an air curtain water-blocking gantry main shaft, including a shell, a bearing, a shaft core, a front cover, a rear cover, a narrow opening, and an air duct. A group of coaxially aligned bearings are arranged on the inner wall of the shell, and a shaft core is arranged in the bearing. Front covers and rear covers are arranged at both ends of the shell, and both ends of the shaft core pass through the front cover and the rear cover. The front cover is tightly attached to the outer wall of the shaft core to form a seam, and a narrow opening is opened obliquely outward at the seam. The narrow opening is connected to the air duct to form an air curtain on the outer wall of the shaft core.

[0005] In a preferred embodiment of the present utility model, the air passage is composed of a main passage and a sub-passage that are connected to each other, the main passage is opened in the shell, and the sub-passage is opened in the front cover.

[0006] In a preferred embodiment of the utility model, a recessed groove is provided on the front cover, a water retaining ring with a wedge-shaped cross-section is embedded in the recessed groove, the water retaining ring is elastically pressed onto the shaft core outside the joint, a slope guiding the outside of the joint is provided on the side wall of the recessed groove, and the water retaining ring and the slope constitute the narrow opening.

[0007] In a preferred embodiment of the utility model, the water retaining ring is provided with air holes, and the narrow opening is connected to the airway through the air holes.

[0008] In a preferred embodiment of the utility model, the outer wall of the shaft core is provided with a tooth-shaped water storage groove in the middle section of the joint.

[0009] In a preferred embodiment of the utility model, the shaft core is hollow and coaxially provided with a broaching rod with a sleeve disc spring, a broaching claw is provided at the end of the broaching rod, a handle is clamped on the broaching claw, and the handle is installed at the front end of the shaft core through a positioning key.

[0010] The beneficial effect of the utility model is that the utility model provides an air curtain water-blocking gantry spindle, because the front cover is modified to form a narrow opening, so that compressed gas can be externally connected to form an air curtain on the outer wall of the shaft core to achieve the purpose of water blocking. The air curtain fully covers the shaft core, so that the high-speed running spindle is fully protected from water and its service life is greatly extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0012] Figure 1 This is the overall structural diagram of the main shaft of an air curtain water blocking gantry of the utility model;

[0013] Figure 2 It is a partially enlarged structural diagram of a main shaft of an air curtain water blocking gantry of the utility model. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] like Figure 1-2 As shown, the embodiment of the utility model includes:

[0016] An air curtain water-blocking gantry spindle comprises a shell 1, a bearing 2, a shaft core 3, a front cover 4, a rear cover 5, a narrow opening 6, and an air duct 7. A group of coaxially aligned bearings 2 are arranged on the inner wall of the shell 1, and a shaft core 3 is arranged in the bearing 2. A front cover 4 and a rear cover 5 are arranged at both ends of the shell 1. Both ends of the shaft core 3 pass through the front cover 4 and the rear cover 5. The front cover 4 is tightly attached to the outer wall of the shaft core 3 to form a seam 20. The front cover 4 has a narrow opening 6 obliquely opened outward at the seam 20. The narrow opening 6 is connected to the air duct 7 to form an air curtain on the outer wall of the shaft core 3.

[0017] The air channel 7 is composed of a main channel 8 and a sub-channel 9 connected to each other. The main channel 8 is opened in the shell 1, and the sub-channel 9 is opened in the front cover 4.

[0018] The main channel 8 is used to connect compressed gas. There are multiple sub-channels 9, which are evenly distributed 360° on the entire front cover 4. The main channel 8 distributes the compressed gas to each sub-channel 9. All sub-channels 9 spray compressed gas to form a circle of air curtain on the outer wall of the shaft core 3, thereby blocking the invasion of water seepage.

[0019] Furthermore, a recessed groove 10 is provided on the front cover 4, and a water retaining ring 11 with a wedge-shaped cross-section is embedded in the recessed groove 10. The water retaining ring 11 is elastically crimped onto the shaft core 3 outside the joint 20. A slope 12 guiding the outside of the joint 20 is provided on the side wall of the recessed groove 10, and the water retaining ring 11 and the slope 12 constitute the narrow opening 6.

[0020] The water retaining ring 11 covers the notch of the sink 10, so that a flat cavity with a reduced diameter is formed inside the sink 10. The compressed gas is guided by the slope 12 in the cavity, so that a directional air curtain can be ejected.

[0021] Furthermore, the water retaining ring 11 is provided with an air hole 13 , and the narrow opening 6 is connected to the air passage 7 via the air hole 13 .

[0022] The caliber of the air hole 13 is smaller than the caliber of the air channel 7, which can achieve a pressurization effect at the outlet end of the air channel 7, rapidly increase the air flow velocity, and thus enhance the drainage effect.

[0023] Furthermore, a tooth-shaped water storage groove is provided on the outer wall of the shaft core 3 in the middle section of the joint 20 .

[0024] Furthermore, the shaft core 3 is hollow and coaxially provided with a broaching rod 15 which is sleeved with a disc spring 14 . A broaching claw 16 is provided at the end of the broaching rod 15 . A handle 17 is clamped on the broaching claw 16 . The handle 17 is installed at the front end of the shaft core 3 via a positioning key 18 .

[0025] The product has a compressed air interface on the shell 1, and the compressed air is introduced into the narrow opening 6 from the air passage 7. The narrow opening 6 blows out a flat air curtain to act on the surface of the shaft core 3 outside the joint 20. The air curtain can completely cover the joint 20, and the seepage water cannot accumulate on the outer wall of the shaft core 3, and a water film cannot be formed at the joint 20, so the seepage problem is solved.

[0026] In summary, the utility model provides an air curtain water-blocking gantry spindle. Since the front cover 4 is modified to form a narrow opening 6, compressed gas can be connected externally to form an air curtain on the outer wall of the shaft core 3 to achieve the purpose of water blocking. The air curtain fully covers the shaft core 3, so that the high-speed running spindle is fully protected from water and its service life is greatly extended.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An air curtain water blocking gantry spindle, characterized in that: It includes a shell, a bearing, a shaft core, a front cover, a rear cover, a narrow opening, and an airway. A group of coaxially aligned bearings are arranged on the inner wall of the shell, and the shaft core is arranged in the bearing. The front cover and the rear cover are arranged at both ends of the shell. The two ends of the shaft core pass through the front cover and the rear cover. The front cover is tightly attached to the outer wall of the shaft core to form a seam. The front cover has a narrow opening obliquely opened outward at the seam. The narrow opening is connected to the airway to form an air curtain on the outer wall of the shaft core.

2. The air curtain water blocking gantry spindle according to claim 1, characterized in that: The air channel is composed of a main channel and a sub-channel that are connected to each other. The main channel is opened in the shell, and the sub-channel is opened in the front cover.

3. The air curtain water blocking gantry spindle according to claim 1 is characterized in that: The front cover is provided with a recessed groove, in which a water retaining ring with a wedge-shaped cross section is embedded. The water retaining ring is elastically pressed onto the shaft core outside the joint. The side wall of the recessed groove is provided with a slope guiding the outside of the joint. The water retaining ring and the slope form the narrow opening.

4. The air curtain water blocking gantry spindle according to claim 3 is characterized in that: The water retaining ring is provided with air holes, and the narrow opening is connected to the airway through the air holes.

5. The air curtain water blocking gantry spindle according to claim 1, characterized in that: The outer wall of the shaft core is provided with a tooth-shaped water storage groove in the middle section of the joint.

6. The air curtain water blocking gantry spindle according to claim 1, characterized in that: The shaft core is hollow and coaxially provided with a broaching rod with a sleeve disc spring. A broaching claw is provided at the end of the broaching rod. A tool handle is clamped on the broaching claw. The tool handle is installed at the front end of the shaft core through a positioning key.

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