Anti-falling mechanism of large hanging type industrial fan

Abstract

The anti-falling mechanism of the large hanging type industrial fan comprises a rotating block and a connecting rod, fixing sleeves are fixedly connected to the three sides, away from each other, of the rotating block, grooves are formed in the fixing sleeves, fan blades are inserted into the grooves, sunken parts are evenly formed in the fan blades, positioning rods are in contact with the sunken parts, and the positioning rods are connected with the rotating block. The positioning rod is in threaded connection with a fixing sleeve, a clamping groove is formed in the fixing sleeve, a first protrusion is in contact with the interior of the clamping groove, fan blades are inserted into the first protrusion, a limiting groove is formed in the first protrusion, a fixing ring is fixedly connected to the upper end of the rotating block, and second protrusions are fixedly connected to the three sides, away from one another, of the fixing ring; according to the fan, the fixing sleeve and the fan blades are installed on the outer side of the rotating block, the positioning rod is connected with the different concave parts in an inserted mode to adjust the rotating diameter of the fan blades, then the connecting rope is matched with the first protrusion and the second protrusion, a connecting structure can be formed on one side of the fan blades, pulling can be provided when the fan blades fall off, and therefore the fan blades are prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of hanging industrial fans, in particular to an anti-falling mechanism for a large hanging industrial fan. Background Art

[0002] Large ceiling fans are generally installed in factories and high-space places to improve the environment and temperature in the space. Usually, large ceiling industrial fans have a large rotation diameter and heavy blades. They drive the air flow through slow rotation to form a continuous three-dimensional circulating wind, thereby achieving a cooling effect. During installation, the fan blades and the rotating module are usually fixed by bolts and connecting plates. At the same time, the maximum rotation diameter of the fan blades needs to be adjusted to increase the air output, which makes the installation stability poor.

[0003] According to the Chinese patent publication number CN220378504U, "A blade chassis mounting mechanism for an industrial fan", it mainly describes the connection relationship between the fan chassis, the fixed card seat, the spline plate and the blades. The plug-in connection method is more stable than the traditional connection method, and a reinforcement plate is provided between adjacent blades to further strengthen the blades. A section of steel cable is reserved at one end of the blade close to the fan chassis. After the whole is assembled, the reserved steel cable and the fan chassis are locked with hardware without affecting normal operation. This can further prevent the plug-in connecting the blade and the fan chassis from breaking, and then causing the blade to fall off and hit the machine or personnel. In this process, when the ceiling fan adjusts the maximum rotation diameter of the blade, the blade is prone to downward displacement at the outer end, resulting in poor stability of the fan blade.

[0004] Therefore, an anti-falling mechanism for a large-scale ceiling-type industrial fan is proposed to solve the problem that the outer ends of the ceiling-type fan blades are easily deflected downward when the maximum rotation diameter of the fan blades is adjusted, thereby causing poor stability of the fan blades. Utility Model Content

[0005] The technical problem to be solved by the utility model is as follows: in this process, when adjusting the maximum rotation diameter of the fan blades, the fan blades of the ceiling fan are prone to downward deviation at the outer ends, resulting in poor stability of the fan blades. Therefore, an anti-falling mechanism for a large ceiling industrial fan is proposed.

[0006] The technical solution adopted by the utility model to solve the technical problem is: an anti-falling mechanism for a large-scale hanging industrial fan, comprising a rotating block and a connecting rod, three sides of the rotating block that are far away from each other are fixedly connected with a fixing sleeve, the fixing sleeve is provided with a groove and a fan blade is inserted in the groove, the fan blade is evenly provided with depressions and the depressions are in contact with a positioning rod, the positioning rod is threadedly connected to the fixing sleeve, the fixing sleeve is provided with a slot, a first protrusion is in contact with the slot, the fan blade is inserted in the first protrusion, two limiting grooves are provided on the first protrusion, the upper end of the rotating block is fixedly connected with a fixing ring, three sides of the fixing ring that are far away from each other are in contact with a second protrusion, and a connecting rope is fixedly connected between the second protrusion and the first protrusion.

[0007] As a preferred technical solution of the utility model, the upper end of the fixed ring is rotatably connected to a gear plate through a bearing, and a limit rod is engaged on the outer side of the gear plate. The limit rod is threadedly connected to the rotating block. By arranging the gear rod and the limit plate, the outer ring of the bearing can be stabilized, thereby stabilizing the position of the connecting rope.

[0008] As a preferred technical solution of the utility model, three sides of the rotating block that are far away from each other are fixedly connected with cushion blocks, and the cushion blocks are in contact with the connecting rope. By providing the cushion blocks, the wear of the connecting rope can be reduced.

[0009] As a preferred technical solution of the utility model, the fan blade is contacted with a support ball, and the support ball is rotatably embedded in the fixed sleeve. The stability of the fan blade is improved by providing the support ball.

[0010] As a preferred technical solution of the utility model, one side of the fan blade is in contact with a spring clamping frame, the spring clamping frame is fixedly connected to one side of the rotating block, and the spring clamping frame is inserted into the limiting groove. By setting the spring clamping frame, the stability of the fan blade during rotation is improved.

[0011] The utility model has the following advantages: by installing a fixing sleeve and a fan blade on the outside of the rotating block, and inserting a positioning rod into different recesses to adjust the rotation diameter of the fan blade, and then the connecting rope cooperates with the first protrusion and the second protrusion to form a connecting structure on one side of the fan blade, which can provide pulling when the fan blade falls off, thereby preventing the fan blade from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of a fall prevention mechanism of a large hanging industrial fan in a preferred embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of a cross-sectional structure of a rotating block of a large-scale hanging industrial fan anti-falling mechanism in a preferred embodiment of the utility model;

[0014] Figure 3It is an enlarged structural schematic diagram of position A of an anti-falling mechanism of a large-scale hanging industrial fan in a preferred embodiment of the utility model.

[0015] Explanation of the accompanying drawings: 1. rotating block; 2. connecting rod; 3. fixing sleeve; 4. fan blade; 5. depression; 6. positioning rod; 7. slot; 8. first protrusion; 9. fixing ring; 10. bearing; 11. gear plate; 12. second protrusion; 13. connecting rope; 14. limiting rod; 15. cushion block; 16. supporting ball; 17. spring clamp frame. DETAILED DESCRIPTION

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Please refer to Figure 1-3 The anti-fall mechanism of a large hanging industrial fan shown in the figure comprises a rotating block 1 and a connecting rod 2. Three sides of the rotating block 1 which are far from each other are fixedly connected with a fixing sleeve 3. A groove is provided on the fixing sleeve 3 and a fan blade 4 is inserted in the groove. The fan blade 4 is sleeved by the fixing sleeve 3, and the positioning rod 6 and the recess 5 are cooperated to provide a stable connection for the fan blade 4, and the rotation diameter of the fan blade 4 can be conveniently adjusted. The fan blade 4 is evenly provided with recesses 5 and the recess 5 is in contact with the positioning rod 6. The positioning rod 6 is threadedly connected to the fixing sleeve 3. A card slot 7 is provided on the fixing sleeve 3, and a first protrusion 8 is in contact with the card slot 7. The first protrusion 8 is inserted into the fan blade 4, and two limit grooves are provided on the first protrusion 8. The first protrusion 8 and the second protrusion 12 cooperate with the connecting rope 13. The rotating gear plate 11 can make the second protrusion 12 pull the connecting rope 13, so that the first protrusion 8 pulls the fan blade 4, thereby forming a connecting structure. When the fan blade 4 is not tightly connected to the positioning rod 6, it can provide pulling to reduce the safety risk caused by falling. A fixing ring 9 is fixedly connected to the upper end of the rotating block 1, and three sides of the fixing ring 9 that are far away from each other are in contact with the second protrusion 12, and a connecting rope 13 is fixedly connected between the second protrusion 12 and the first protrusion 8.

[0018] Among them, a limit rod 14 is threadedly connected to the rotating block 1, and the limit rod 14 is engaged with the outer side of the gear plate 11. The gear plate 11 is rotatably connected to the fixing ring 9 through the bearing 10. By setting the bearing 10, the outer ring of the bearing 10 is fixedly connected to the gear plate 11, and at the same time, the inner ring of the bearing 10 is fixedly connected to the fixing ring 9, so that the connecting rope 13 can be pulled to provide a connection structure for the fan blades 4.

[0019] The connecting rope 13 is in contact with the cushion block 15 , and the cushion block 15 is fixedly connected to three sides of the rotating block 1 that are far away from each other. By providing the cushion block 15 , the buffer is increased and the wear of the connecting rope 13 is reduced.

[0020] A supporting ball 16 is rotatably embedded in the fixing sleeve 3 , and the supporting ball 16 contacts the fan blade 4 . The friction between the fan blade 4 and the fixing sleeve 3 is reduced by providing the supporting ball 16 .

[0021] Among them, a spring clamping frame 17 is inserted in the limiting groove, and the spring clamping frame 17 is composed of a spring rod and a clamping frame. The spring clamping frame 17 is fixedly connected to one side of the rotating block 1, and the spring clamping frame 17 is in contact with one side of the fan blade 4. By setting the spring clamping frame 17 to connect with one side of the fan blade 4 and limiting the limiting groove on the first protrusion 8 through the spring clamping frame 17, the connection can be provided.

[0022] Working principle: place the fan blade 4 into the fixed sleeve 3, and adjust the positioning rod 6 to insert different recesses 5 to achieve the positioning of the fan blade 4. At this time, insert the first protrusion 8 into the fan blade 4, and use the connecting rope 13 to connect the first protrusion 8 and the second protrusion 12, then rotate the gear plate 11, and make the outer ring of the bearing 10 rotate. At this time, the outer ring of the bearing 10 drives the second protrusion 12 to rotate, and makes the connecting rope 13 pull the first protrusion 8. At this time, the spring clamp frame 17 adaptively limits the limiting groove of the first protrusion 8, and then use the positioning rod 6 to insert the gear plate 11 to prevent the gear plate 11 from rotating during the rotation of the fan. The first protrusion 8, the spring clamp frame 17 and the fan blade 4 form a common connection relationship, the connection is more stable, and at the same time prevent the fan blade 4 from falling off.

[0023] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0024] Other parts of the present invention not described in detail belong to the prior art and will not be described here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A large hanging industrial fan anti-fall mechanism, comprising a rotating block (1) and a connecting rod (2), characterized in that: The three sides of the rotating block (1) that are away from each other are fixedly connected with a fixing sleeve (3), the fixing sleeve (3) is provided with a groove, and a fan blade (4) is inserted in the groove, the fan blade (4) is evenly provided with depressions (5), and the depressions (5) are in contact with a positioning rod (6), the positioning rod (6) is threadedly connected to the fixing sleeve (3), the fixing sleeve (3) is provided with a slot (7), and the slot (7) is in contact with a first protrusion (8), the first protrusion (8) is inserted in the fan blade (4), and the first protrusion (8) is provided with two limiting grooves, the upper end of the rotating block (1) is fixedly connected with a fixing ring (9), the three sides of the fixing ring (9) that are away from each other are in contact with a second protrusion (12), and a connecting rope (13) is fixedly connected between the second protrusion (12) and the first protrusion (8).

2. The anti-falling mechanism of a large hanging industrial fan according to claim 1, characterized in that: The upper end of the fixing ring (9) is rotatably connected to a gear plate (11) via a bearing (10); a limit rod (14) is meshed on the outer side of the gear plate (11); and the limit rod (14) is threadedly connected to the rotating block (1).

3. The anti-falling mechanism of a large hanging industrial fan as claimed in claim 2, characterized in that: Three sides of the rotating block (1) that are away from each other are fixedly connected with cushion blocks (15), and the cushion blocks (15) are in contact with the connecting rope (13).

4. The anti-falling mechanism of a large hanging industrial fan according to claim 1, characterized in that: The fan blade (4) is in contact with a supporting ball (16), and the supporting ball (16) is rotatably embedded in the fixing sleeve (3).

5. The anti-falling mechanism of a large hanging industrial fan as claimed in claim 4, characterized in that: One side of the fan blade (4) contacts a spring clamping frame (17), the spring clamping frame (17) is fixedly connected to one side of the rotating block (1), and the spring clamping frame (17) is plugged into the limiting groove.

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