Adjusting and locking device for mining fan blade

Abstract

The utility model relates to the field of mine fan equipment, in particular to an adjusting and locking device for mine fan blades. One end of the blade handle shaft is connected with the blade; the hub is provided with a locking shaft hole; the blade handle shaft sleeve is arranged in the locking shaft hole, the blade handle shaft sleeve is fixed in the locking shaft hole, the blade handle shaft is arranged in the blade handle shaft sleeve, and a positioning groove is formed in the bottom of the blade handle shaft sleeve; the clamping ring is arranged at the other end of the blade handle shaft; the fixing piece is arranged on the clamping ring, and the clamping ring is matched with the positioning groove of the blade handle shaft sleeve through the fixing piece. The locking structure is simplified, installation in actual work is facilitated, meanwhile, staff can adjust the blade angle conveniently in the later period, the step of locking the blade handle shaft is simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of mining fan equipment, in particular to an adjusting and locking device for mining fan blades. Background Art

[0002] During underground mining operations, in order to ensure the air quality underground, it is necessary to set up mine fans on the ground to access the air duct. Among them, mine fans mostly use mine counter-cyclonic fans. Mine counter-cyclonic fans can ventilate for underground workers and extract some toxic gases underground. In daily work, mine counter-cyclonic fans need to measure the concentration of each gas according to the air detection device underground, and adjust the air supply and exhaust volume of the mine counter-cyclonic fans at any time according to the measured values.

[0003] In the prior art, the air volume of the counter-rotating fan for mining is mainly adjusted by adjusting the blade angle, such as Figure 1 As shown, the blade locking component includes a locking pin bolt 10, a retaining ring 500, a locking pin 30, a locking pin sleeve 40 and an arc-shaped pressure block 50. When the blade angle is adjusted, the locking pin bolt 10 is tightened to press the locking pin 30 downward, and the inclined conical surface of the locking pin 30 cooperates with the arc-shaped pressure block 50, so that the arc-shaped pressure block 50 further presses the blade stalk shaft 200, thereby completing the blade locking, and at the same time, the locking retaining ring 500 applies axial force to the blade stalk shaft 200 to finally complete the clamping. The overall locking component is complicated, resulting in too many locking fits before and after the blade is adjusted, which makes the single adjustment working time too long, and there are problems in subsequent maintenance. Utility Model Content

[0004] The utility model provides an adjusting and locking device for mining fan blades, which simplifies the locking structure, is convenient for installation in actual work, and is convenient for later personnel to adjust the blade angle and perform later maintenance, simplifies the steps of locking the blade stalk shaft, and improves work efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an adjusting and locking device for mining fan blades, comprising:

[0006] blade;

[0007] A petiole axis, one end of which is connected to the leaf blade;

[0008] A wheel hub, wherein the wheel hub is provided with a locking shaft hole;

[0009] A petiole sleeve, wherein the petiole sleeve is arranged in the locking shaft hole, the petiole sleeve is fixedly arranged in the locking shaft hole, the petiole shaft is arranged in the petiole sleeve, and a positioning groove is arranged at the bottom of the petiole sleeve;

[0010] A snap ring, the snap ring being arranged on the other end of the petiole shaft;

[0011] A fixing piece, wherein the fixing piece is arranged on the clamping ring, and the clamping ring cooperates with the positioning groove of the petiole shaft sleeve through the fixing piece.

[0012] Furthermore, a limiting protrusion is provided at the connection between one end of the petiole shaft and the blade, and the limiting protrusion is blocked on the locking shaft hole.

[0013] Furthermore, a shaft shoulder is arranged at the other end of the petiole shaft, the shaft shoulder is close to the bottom of the petiole shaft sleeve, and the retaining ring is arranged on the shaft.

[0014] Preferably, the clamping ring includes a first clamping ring and a second clamping ring, and the first clamping ring and the second clamping ring are both in a semicircular ring shape.

[0015] Furthermore, the first retaining ring and the second retaining ring are both provided with locking screw holes, the positions of the locking screw holes of the first retaining ring and the locking screw holes of the second retaining ring correspond to each other, and the first retaining ring and the second retaining ring are provided with installation grooves, and the installation grooves are connected to the locking screw holes.

[0016] Furthermore, the first clamping ring is provided with a connecting screw hole.

[0017] Furthermore, the fixing member is a fixing block, and a connecting bolt is provided at one end of the fixing member.

[0018] Furthermore, a connecting bolt at one end of the fixing member is connected and fixed to a connecting screw hole of the first clamping ring.

[0019] Compared with the prior art, the adjustment and locking device for mining fan blades according to the embodiment of the utility model is configured by fixing a blade stalk sleeve on the locking shaft hole on the hub, and providing a positioning groove at the bottom of the blade stalk sleeve, and providing a retaining ring at the blade stalk shaft, and providing a fixing member on the retaining ring. The retaining ring is axially locked on the blade stalk shaft by bolts. While locking the blade stalk shaft, the fixing block and the positioning groove also cooperate and lock with each other, thereby fixing the blade stalk shaft to prevent the blade stalk shaft from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a fan blade locking device in the prior art;

[0021] Figure 2 This is a schematic diagram of the overall structure of an adjustment and locking device for mining fan blades of the utility model;

[0022] Figure 3 for Figure 2 A magnified view of area A;

[0023] Figure 4 for Figure 2 Magnified view of area B;

[0024] Figure 5 It is a schematic diagram of a single structure of a clamping ring of an adjusting and locking device for a blade of a mining fan according to the utility model, in a top view and a partial cross-sectional view;

[0025] Figure 6 The utility model is a bottom cross-sectional view of a blade stalk sleeve of an adjusting and locking device for a mining fan blade.

[0026] Reference numerals:

[0027] 10. Locking pin bolt; 30. Locking pin; 40. Locking pin sleeve; 50. Arc-shaped pressure block;

[0028] 100. Leaves;

[0029] 200. petiole axis; 210. limiting protrusion; 220. shaft shoulder;

[0030] 300. Wheel hub; 310. Locking shaft hole;

[0031] 400. petiole sleeve; 410. positioning groove;

[0032] 500. Snap ring; 510. First snap ring; 511. Connecting screw hole; 520. Second snap ring; 530. Mounting groove; 540. Locking screw hole; 550. Locking bolt;

[0033] 600. Fasteners; 610. Connecting bolts. DETAILED DESCRIPTION

[0034] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0035] like Figure 2-6 As shown, an adjusting and locking device for a fan blade provided according to an embodiment of the utility model includes: a blade 100, a blade stalk shaft 200, a hub 300, a blade stalk sleeve 400, a clamping ring 500 and a fixing member 600;

[0036] The blade 100 is connected to one end of the petiole shaft 200, and the petiole shaft 200 is arranged in the petiole shaft sleeve 400, wherein the petiole shaft sleeve 400 is welded and fixed in the locking shaft hole 310 on the hub 300, and a positioning groove 410 is arranged at the bottom of the petiole shaft sleeve 400, and a clamping ring 500 is arranged at the other end of the petiole shaft 200, and a fixing piece 510 is arranged on the clamping ring 500 and matched with the positioning groove 410 of the petiole shaft sleeve 400;

[0037] Among them, when the user needs to use the utility model to adjust the angle of the fan blade using an adjustment and locking device for the fan blade, the staff disassembles the clamping ring 500 so that the fixing piece 600 on the clamping ring 500 is separated from the positioning groove 410 of the petiole sleeve 400, and at the same time loosens the axially fixed petiole shaft 200. At this time, the operator rotates the petiole shaft 200 to adjust the angle of the blade 100. After completing the angle adjustment of the blade 100, the staff only needs to reinstall the locking clamping ring 500, and the clamping ring 500 axially locks the shaft shoulder 220 again. At the same time, the fixing piece 600 on the clamping ring 500 is re-inserted into the positioning groove 410 of the petiole sleeve 400. If the petiole shaft 200 rotates, the clamping ring 500 will be driven to rotate. At this time, the fixing piece 600 on the clamping ring 500 is restricted by the positioning groove 410 and cannot be rotated, so that the petiole shaft 200 cannot rotate either.

[0038] like Figure 3 As shown, a limiting protrusion 210 is provided at the connection between the blade 100 and one end of the petiole shaft 200, and the limiting protrusion 210 is blocked on the locking shaft hole 310. The limiting protrusion 210 is provided with a chamfer to facilitate the limiting protrusion 210 to rotate at the top of the locking shaft hole 310, while preventing the petiole shaft 200 from falling downward.

[0039] like Figure 2 As shown, a shaft shoulder 220 is disposed at the other end of the petiole shaft 200 . The shaft shoulder 220 is close to the bottom of the petiole shaft sleeve 400 , and a retaining ring 500 is disposed on the shaft shoulder 220 .

[0040] like Figure 5 As shown, the snap ring 500 includes a first snap ring 510 and a second snap ring 520 , and both the first snap ring 510 and the second snap ring 520 are in a semicircular ring shape.

[0041] like Figure 4 and Figure 5 As shown, the first clamping ring 510 and the second clamping ring 520 are both provided with locking screw holes 540, the position of the locking screw holes 540 of the first clamping ring 510 corresponds to the position of the locking screw holes 540 of the second clamping ring 520, and the first clamping ring 510 and the second clamping ring 520 are provided with mounting grooves 530, which are connected with the locking screw holes 540. The staff connects and fixes the first clamping ring 510 and the second clamping ring 520 through the locking screw holes 540 by means of locking bolts 550, wherein the mounting grooves 530 are convenient for the operator to tighten the locking bolts 550.

[0042] like Figure 4 and Figure 5 As shown, the first clamping ring 510 is provided with a connecting screw hole 511. Figure 4 As shown, the fixing member 600 is a fixing block, and a connecting bolt 610 is provided at one end of the fixing member 600 , and the fixing member 600 is fixedly connected to the connecting screw hole 511 of the first clamping ring 510 through the connecting bolt 610 .

[0043] In the description of the present invention, it is necessary to understand that the terms “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. An adjusting and locking device for mining fan blades, characterized in that: include: blade; A petiole axis, one end of which is connected to the leaf blade; A wheel hub, wherein the wheel hub is provided with a locking shaft hole; A petiole sleeve, wherein the petiole sleeve is arranged in the locking shaft hole, the petiole sleeve is fixed in the locking shaft hole, the petiole shaft is arranged in the petiole sleeve, and a positioning groove is arranged at the bottom of the petiole sleeve; A snap ring, the snap ring being arranged on the other end of the petiole shaft; A fixing piece, wherein the fixing piece is arranged on the clamping ring, and the clamping ring cooperates with the positioning groove of the petiole shaft sleeve through the fixing piece.

2. The adjusting and locking device for mining fan blades according to claim 1, characterized in that: A limiting protrusion is arranged at the connection between one end of the petiole shaft and the blade, and the limiting protrusion is blocked on the locking shaft hole.

3. The adjusting and locking device for mining fan blades according to claim 1, characterized in that: A shaft shoulder is arranged at the other end of the petiole shaft, the shaft shoulder is close to the bottom of the petiole shaft sleeve, and the clamping ring is arranged on the shaft member.

4. The adjusting and locking device for mining fan blades according to claim 1, characterized in that: The clamping ring comprises a first clamping ring and a second clamping ring, and the first clamping ring and the second clamping ring are both in a semicircular ring shape.

5. The adjusting and locking device for mining fan blades according to claim 4 is characterized in that: The first clamping ring and the second clamping ring are both provided with locking screw holes, the locking screw holes of the first clamping ring and the locking screw holes of the second clamping ring are located in corresponding positions, and the first clamping ring and the second clamping ring are provided with mounting grooves, which are communicated with the locking screw holes.

6. The adjusting and locking device for mining fan blades according to claim 4, characterized in that: The first clamping ring is provided with a connecting screw hole.

7. The adjusting and locking device for mining fan blades according to claim 6, characterized in that: The fixing member is a fixing block, and a connecting bolt is arranged at one end of the fixing member.

8. The adjusting and locking device for mining fan blades according to claim 7, characterized in that: A connecting bolt at one end of the fixing member is connected and fixed to the connecting screw hole of the first clamping ring.

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