Automatic door lifting mechanism and fuming cupboard thereof

Abstract

The automatic door lifting mechanism comprises a bearing frame, a threaded column is arranged in the bearing frame, an installation block is connected to the outer portion of the threaded column in a threaded and penetrating mode, a movable plate is fixedly connected to the side portion of the installation block, and a through groove matched with the movable plate is formed in the side portion of the bearing frame. An auxiliary mechanism used for conducting movable lubrication on the exterior of the threaded column is arranged at the top of the mounting block and comprises an auxiliary cylinder and a sponge cylinder, and the threaded column is sleeved with the auxiliary cylinder. Through mutual cooperation of the mounting block, the moving plate, the annular groove, the oil leakage groove, the auxiliary barrel, the sponge barrel, the connecting pipe and the annular cover, the auxiliary barrel is used for containing lubricating oil, the lubricating oil leaks out of the oil leakage groove and is absorbed by the sponge barrel, the sponge barrel smears the lubricating oil to the outer wall of the threaded column, and the connecting pipe adds the lubricating oil; and lubricating oil can be conveniently smeared on the outer wall of the threaded column when the mounting block is moved for use.

Description

Technical Field

[0001] The utility model relates to the field of automatic lifting mechanisms for fume hood doors, in particular to an automatic door lifting mechanism and a fume hood thereof. Background Art

[0002] A fume hood is usually a device used for exhaust. The fume hood can discharge pollutants. The fume hood usually includes a fume hood body, a door, and an automatic lifting device. The automatic lifting device is located on the fume hood body, and the door is slidably arranged on the fume hood body. The automatic lifting device can drive the door to automatically lift up and down.

[0003] Application No. 202121445546.X mentions an automatic lifting device for a fume hood door, which includes a fume hood with a low-power test equipment arranged inside, a first door and a second door arranged alternately on the fume hood, the second door is slidably installed on the fume hood, a mounting block is welded on one side wall of the second door, and lifting frames are installed on both sides of the inner walls of the fume hood, each lifting frame is provided with a forward and reverse motor inside, the output end of the forward and reverse motor is connected to a threaded column, and the threaded column is threadedly connected to the mounting block, a microwave sensor is installed on one outer wall of the fume hood, and the microwave sensor and the forward and reverse motor are electrically connected to the controller.

[0004] The forward and reverse motors are used to drive the threaded column to rotate, and the threaded column drives the mounting block to move up and down, and then the mounting block drives the cabinet door to lift and lower. The threaded column and the mounting block are threadedly connected. The rotational friction between the threaded column and the mounting block needs to be reduced by lubricating oil, and then the staff will apply lubricating oil to the outside of the threaded column. However, after the threaded column has been used for a long time, there will be a situation where the lubricating oil is insufficient and needs to be reapplied. The prior art usually requires the staff to disassemble the frame, and then apply lubricating oil to the outside of the threaded column up and down, but this method will result in cumbersome operation, and it is not convenient to lubricate the threaded column while the mounting block is moving, and there are certain limitations. Utility Model Content

[0005] The utility model aims to provide an automatic door lifting mechanism and a fume hood thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an automatic door lifting mechanism, comprising:

[0007] A carrier frame, wherein a threaded column is arranged inside the carrier frame, a mounting block is inserted and connected through the external thread of the threaded column, a movable plate is fixedly connected to the side of the mounting block, and a through groove matching the movable plate is opened on the side of the carrier frame;

[0008] The top of the mounting block is provided with an auxiliary mechanism for moving and lubricating the outside of the threaded column, and the auxiliary mechanism includes:

[0009] An auxiliary tube and a sponge tube, wherein the auxiliary tube is sleeved on the outside of the threaded column, the inner wall of the sponge tube fits the outer wall of the threaded column, an annular groove is provided at the top of the auxiliary tube, and an oil leakage groove is provided at the bottom of the inner wall of the annular groove. The auxiliary tube is used to contain lubricating oil, and the sponge tube is used to absorb the lubricating oil so as to apply it to the outer wall of the threaded column. A mounting mechanism is provided on the auxiliary tube;

[0010] An annular cover and a connecting pipe, wherein the bottom of the annular cover is threadedly connected to the inner cavity of the annular groove, and the connecting pipe is fixedly connected to the top of the annular cover, and the connecting pipe is used to inject lubricating oil into the interior of the annular groove.

[0011] Preferably, the top end of the sponge tube is fixedly connected to the auxiliary tube, one end of the connecting tube is threadedly inserted and connected with a connecting cap, the top end of the annular cover is provided with a through hole, and the threaded column is located inside the through hole.

[0012] Preferably, a bearing block is fixedly connected to the side of the auxiliary cylinder, a positioning column is fixedly connected to the bottom end of the bearing block, a positioning cylinder is fixedly connected to the top end of the movable plate, and the positioning column is slidably and interlacedly connected to the inner cavity of the positioning cylinder.

[0013] Preferably, the mounting mechanism includes a mounting frame and a fixed column, the side of the mounting frame is fixedly connected to the auxiliary cylinder, the side of the fixed column is fixedly connected to the mounting block, the inner wall side of the mounting frame is provided with a groove, and the fixed column is slidably connected to the inner cavity of the groove.

[0014] Preferably, a fixing rod is fixedly connected to the side of the inner wall of the mounting frame, one end of the fixing rod is fixedly connected to a brake plate, the outer wall of the fixing rod is slidably connected with a limit frame for locking the relative position of the mounting frame and the fixing column, and the fixing column is slidably connected with the inner cavity of the limit frame.

[0015] Preferably, a pulling rod is fixedly connected to the side of the limit frame, a groove is provided on the side of the limit frame, an elastic rope is fixedly connected to the inner wall of the groove, and one end of the elastic rope is fixedly connected to the mounting frame.

[0016] Another object of the utility model is to provide a fume hood, wherein the fume hood comprises the above-mentioned automatic door lifting mechanism.

[0017] Technical effects and advantages of the utility model:

[0018] The utility model utilizes the mutual cooperation of the mounting block, the movable plate, the annular groove, the oil leakage groove, the auxiliary cylinder, the sponge cylinder, the connecting pipe and the annular cover; the auxiliary cylinder contains the lubricating oil; the lubricating oil leaks from the oil leakage groove and is absorbed by the sponge cylinder; the sponge cylinder smears the lubricating oil on the outer wall of the threaded column; the connecting pipe adds the lubricating oil, which is beneficial for smearing the lubricating oil on the outer wall of the threaded column when the mounting block is moved for use, and is convenient for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a front sectional structural schematic diagram of the support frame of the utility model.

[0021] Figure 3 It is a front sectional structural schematic diagram of the auxiliary cylinder of the utility model.

[0022] In the figure: 1. supporting frame; 2. threaded column; 3. mounting block; 4. movable plate; 5. auxiliary mechanism; 51. auxiliary cylinder; 52. sponge cylinder; 53. annular cover; 54. connecting pipe; 55. connecting cap; 56. supporting block; 57. positioning column; 58. positioning cylinder; 6. mounting mechanism; 61. mounting frame; 62. fixing column; 63. limiting frame; 64. fixing rod; 65. elastic rope. DETAILED DESCRIPTION

[0023] 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.

[0024] The utility model provides Figure 1-3 An automatic door lifting mechanism shown includes a carrier frame 1, a threaded column 2 is arranged inside the carrier frame 1, which is conducive to driving the mounting block 3 to move up and down, the external thread of the threaded column 2 is inserted and connected with the mounting block 3, the mounting block 3 is conducive to driving the movable plate 4 to move up and down, the side of the mounting block 3 is fixedly connected with the movable plate 4, which is conducive to connecting with the cabinet door, and then facilitating the automatic up and down lifting operation of the cabinet door, and the side of the carrier frame 1 is provided with a through groove matching the movable plate 4.

[0025] Furthermore, an auxiliary mechanism 5 for mobile lubrication of the outside of the threaded column 2 is provided on the top of the mounting block 3. The auxiliary mechanism 5 includes an auxiliary cylinder 51 and a sponge cylinder 52. The auxiliary cylinder 51 is conducive to containing the lubricating oil, which is convenient for the subsequent containing and use of the lubricating oil. The sponge cylinder 52 is conducive to absorbing the lubricating oil. The sponge cylinder 52 is conducive to applying the lubricating oil to the outer wall of the threaded column 2, which is conducive to the mobile lubrication operation of the threaded column 2. The auxiliary cylinder 51 is sleeved on the outside of the threaded column 2, and the inner wall of the sponge cylinder 52 is in contact with the outer wall of the threaded column 2. The top of the auxiliary cylinder 51 is provided with an annular groove, and the bottom end of the inner wall of the annular groove is provided with an oil leakage groove, which is conducive to the lubricating oil flowing from the inside thereof. Out, and then absorbed by the sponge tube 52, the auxiliary tube 51 is used to hold the lubricating oil, the sponge tube 52 is used to absorb the lubricating oil to apply it to the outer wall of the threaded column 2, and the auxiliary tube 51 is provided with a mounting mechanism 6, an annular cover 53 and a connecting pipe 54. The annular cover 53 is conducive to sealing and protecting the inner cavity of the annular groove to prevent contamination, and the connecting pipe 54 is conducive to connecting with an external pipeline, so that the lubricating oil is injected into the interior of the annular groove from the inside, so as to facilitate the addition of the lubricating oil. The bottom of the annular cover 53 is threadedly connected with the inner cavity of the annular groove, and the connecting pipe 54 is fixedly connected to the top of the annular cover 53, and the connecting pipe 54 is used to inject the lubricating oil into the interior of the annular groove.

[0026] Specifically, the top end of the sponge tube 52 is fixedly connected to the auxiliary tube 51, and one end of the connecting tube 54 is threadedly connected with a connecting cap 55, which is conducive to sealing the connecting tube 54. A through hole is opened at the top end of the annular cover 53, and the threaded column 2 is located inside the through hole. The side of the auxiliary tube 51 is fixedly connected with a bearing block 56, which is conducive to supporting the positioning column 57. The bottom end of the bearing block 56 is fixedly connected with a positioning column 57. The positioning column 57 and the positioning tube 58 are conducive to positioning the installation of the auxiliary tube 51. The top end of the movable plate 4 is fixedly connected with the positioning tube 58, and the positioning column 57 is slidably connected with the inner cavity of the positioning tube 58.

[0027] Specifically, the mounting mechanism 6 includes a mounting frame 61 and a fixing column 62. The mounting frame 61 is F-shaped. The mounting frame 61 is conducive to supporting the auxiliary cylinder 51 and facilitating the installation of the auxiliary cylinder 51. The fixing column 62 is conducive to connecting with the mounting frame 61 and facilitating the positioning of the installation of the mounting frame 61. The side of the mounting frame 61 is fixedly connected to the auxiliary cylinder 51, and the side of the fixing column 62 is fixedly connected to the mounting block 3. The inner wall side of the mounting frame 61 is provided with a slot, and the fixing column 62 is slidably inserted and connected with the inner cavity of the slot. The side of the inner wall of the mounting frame 61 is fixedly connected with a fixing rod 64, which is conducive to supporting the limit frame 63. One end of the fixing rod 64 is fixedly connected with a brake plate, and the outer wall of the fixing rod 64 is slidably inserted and connected to be useful. The limit frame 63 for locking the relative position of the mounting frame 61 and the fixed column 62 is conducive to limiting the relative position of the fixed column 62 and the mounting frame 61, facilitating the installation and disassembly of the auxiliary cylinder 51 and avoiding the arbitrary sliding of the auxiliary cylinder 51. The fixed column 62 is slidably and interlacedly connected with the inner cavity of the limit frame 63. The side of the limit frame 63 is fixedly connected with a pulling rod, which is conducive to the pulling operation of the limit frame 63. The side of the limit frame 63 is provided with a groove, and the inner wall of the groove is fixedly connected with an elastic rope 65. The pulling force of the elastic rope 65 is conducive to pulling the limit frame 63 to move, so that the limit frame 63 can be restored to its original position after movement, and it is convenient to repeat the operation of the limit frame 63. One end of the elastic rope 65 is fixedly connected to the mounting frame 61.

[0028] This embodiment provides a fume hood, which includes the above-mentioned automatic door lifting mechanism.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic door lifting mechanism, comprising: A carrier frame (1), wherein a threaded column (2) is arranged inside the carrier frame (1), a mounting block (3) is inserted and connected to the external thread of the threaded column (2), a movable plate (4) is fixedly connected to the side of the mounting block (3), and a through groove matching the movable plate (4) is opened on the side of the carrier frame (1); It is characterized in that an auxiliary mechanism (5) for moving and lubricating the outside of the threaded column (2) is arranged on the top of the mounting block (3), and the auxiliary mechanism (5) comprises: An auxiliary tube (51) and a sponge tube (52), wherein the auxiliary tube (51) is sleeved on the outside of the threaded column (2), the inner wall of the sponge tube (52) is in contact with the outer wall of the threaded column (2), the top of the auxiliary tube (51) is provided with an annular groove, the bottom of the inner wall of the annular groove is provided with an oil leakage groove, the auxiliary tube (51) is used to contain lubricating oil, and the sponge tube (52) is used to absorb lubricating oil so as to be applied to the outer wall of the threaded column (2), and a mounting mechanism (6) is provided on the auxiliary tube (51); An annular cover (53) and a connecting pipe (54), wherein the bottom of the annular cover (53) is threadedly connected to the inner cavity of the annular groove, and the connecting pipe (54) is fixedly connected to the top of the annular cover (53). The connecting pipe (54) is used to inject lubricating oil into the interior of the annular groove.

2. The automatic door lifting mechanism according to claim 1, characterized in that: The top end of the sponge tube (52) is fixedly connected to the auxiliary tube (51), one end of the connecting tube (54) is threadedly inserted with a connecting cap (55), the top end of the annular cover (53) is provided with a through hole, and the threaded column (2) is located inside the through hole.

3. The automatic door lifting mechanism according to claim 1, characterized in that: The side of the auxiliary cylinder (51) is fixedly connected to a bearing block (56), the bottom end of the bearing block (56) is fixedly connected to a positioning column (57), the top end of the movable plate (4) is fixedly connected to a positioning cylinder (58), and the positioning column (57) is slidably connected to the inner cavity of the positioning cylinder (58).

4. The automatic door lifting mechanism according to claim 1, characterized in that: The mounting mechanism (6) comprises a mounting frame (61) and a fixing column (62); the side of the mounting frame (61) is fixedly connected to the auxiliary cylinder (51); the side of the fixing column (62) is fixedly connected to the mounting block (3); a groove is provided on the inner wall side of the mounting frame (61); and the fixing column (62) is slidably connected to the inner cavity of the groove.

5. The automatic door lifting mechanism according to claim 4, characterized in that: A fixing rod (64) is fixedly connected to the side of the inner wall of the mounting frame (61), one end of the fixing rod (64) is fixedly connected to a brake plate, and an outer wall of the fixing rod (64) is slidably connected to a limit frame (63) for locking the relative position of the mounting frame (61) and the fixing column (62), and the fixing column (62) is slidably connected to the inner cavity of the limit frame (63).

6. The automatic door lifting mechanism according to claim 5, characterized in that: A pulling rod is fixedly connected to the side of the limit frame (63), a groove is provided on the side of the limit frame (63), an elastic rope (65) is fixedly connected to the inner wall of the groove, and one end of the elastic rope (65) is fixedly connected to the mounting frame (61).

7. A fume hood, characterized in that: The fume hood comprises the automatic door lifting mechanism according to any one of claims 1 to 6.

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