CN111531208B - A drilling fixture for a rotor room of a wind turbine - Google Patents

Abstract

The invention discloses a drilling fixture for a rotor house of a wind driven generator, which comprises a supporting frame, a counterweight frame and a drilling die; holes with different specifications or arrangements on the rotor drum body can be directly formed by matching a drilling mould with a hand-held electric drill; meanwhile, by matching the hand-held electric drill with the balancing weight, an operator can counteract most of gravity of the hand-held electric drill through the balancing weight when drilling; when the hole on the drilling mould is drilled on one side of the cylinder body, the drilling mould can rotate along the top of the cylinder body, and drilling is performed when the drilling mould rotates to a required position; furthermore, by adopting the measures, the labor intensity is greatly reduced, the efficiency is improved, and the drilling precision is ensured.

Description

A drilling fixture for a rotor room of a wind turbine

Technical Field

The invention relates to the field of wind turbines, and in particular to a drilling fixture for a rotor room of a wind turbine.

Background technique

The existing rotor housing cylinder is drilled by lathe, but the through holes on the cylinder have different requirements for specifications, angles between holes and arrangements. Therefore, when drilling with a lathe, it is necessary to constantly replace tools of different sizes and change angles to complete the drilling, which is a huge workload and low labor efficiency. Secondly, the drilling accuracy requirements will obviously not meet the standards.

Summary of the invention

In order to overcome the above-mentioned shortcomings, the present invention provides a wind turbine rotor room drilling fixture.

A wind turbine rotor room drilling fixture comprises a support frame for clamping a rotor room cylinder, a counterweight frame and a drilling mold, the drilling mold is fixedly connected to the bottom of the counterweight frame and fixed to the inner wall of the rotor room cylinder by a plurality of fastening bolts, the support frame is fixedly connected to the bottom of the counterweight frame and contacts the outer wall of the rotor room cylinder; a first roller and a second roller are respectively provided at both ends of the counterweight frame, the first roller is arranged on the outer side of the rotor room cylinder, the second roller is arranged on the inner side of the rotor room cylinder, the first roller and the second roller are respectively connected to the counterweight frame by a pin shaft, and the first roller and the second roller are respectively connected to the counterweight frame by a pin shaft, and the first roller and the second roller are respectively connected to the counterweight frame by a pin shaft. The wheels are connected by a pull rope, one end of the pull rope is tied with a counterweight, and the other end is tied with a handheld electric drill; bearing holes are symmetrically opened at both ends of the top of the drilling mold, a first bearing is arranged in the bearing hole, a wheel axle passes through the first bearing, a spacer is sleeved at one end of the wheel axle close to the outer wall of the rotor housing cylinder, a threaded rod is integrally connected to the end close to the inner wall of the rotor housing cylinder, a second bearing is sleeved on the wheel axle between the spacer and the first bearing, the second bearing is in contact with the top of the rotor housing cylinder, a nut is arranged on the threaded rod, a gasket is arranged at the connection between the wheel axle and the threaded rod, one end of the gasket is in contact with the wheel axle, and the other end is in contact with the nut.

According to a preferred embodiment of the present invention, the support frame includes a vertical rod and an oblique rod, which are respectively fixedly connected to the counterweight frame. The oblique rod is arranged on the outside of the vertical rod. A threaded hole is opened at the bottom end of the vertical rod. A leveling bolt is passed through the threaded hole. The head of the leveling bolt is in contact with the outer wall of the rotor housing cylinder.

According to a preferred embodiment of the present invention, a plurality of through holes are formed on the drilling die.

According to a preferred embodiment of the present invention, the length of the wheel axle is greater than the wall thickness of the drilling mold and less than the sum of the wall thicknesses of the drilling mold and the rotor housing cylinder.

According to a preferred embodiment of the present invention, the distance from the first roller to the drilling mold is greater than the distance from the second roller to the drilling mold.

According to a preferred embodiment of the present invention, the diameter of the spacer sleeve is larger than the inner diameter of the second bearing.

According to a preferred embodiment of the present invention, the outer diameter of the gasket is larger than the diameter of the bearing hole.

According to a preferred embodiment of the present invention, the height of the drilling mold is the same as the height of the rotor housing cylinder.

The beneficial effects of the present invention are as follows: holes of various specifications or arrangements on the rotor housing cylinder can be directly completed by a drilling mold in cooperation with a handheld electric drill; at the same time, through the cooperation of the handheld electric drill and the counterweight block, the operator can offset most of the gravity of the handheld electric drill through the counterweight block when drilling; furthermore, when the holes on the drilling mold are drilled on one side of the cylinder, the drilling mold can be rotated along the top of the cylinder, and when it is rotated to the required position, drilling can be carried out; furthermore, the above measures not only greatly reduce the labor intensity and improve the efficiency, but also ensure the accuracy of drilling.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will now be described by way of example with reference to the accompanying drawings, in which:

Fig. 1 is a front view of the present invention:

Fig. 2 is a side view of the present invention;

FIG3 is a top view of the internal connection of the present invention;

FIG4 is a partial enlarged view of FIG1;

Among them: the first roller 1, the pull rope 2, the counterweight 3, the rotor housing body 4, the fastening bolts 5, the handheld electric drill 6, the drilling mold 7, the second bearing 8, the second roller 9, the first bearing 10, the through hole 11, the pin 12, the axle 13, the nut 14, the threaded rod 15, the diagonal rod 16, the vertical rod 17, the leveling bolts 18, the spacer 19, the gasket 20, and the counterweight frame 21.

Detailed ways

The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

In the description of the invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the invention.

In the description of the invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components, and a fixed connection can be welding, gluing, etc. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

As shown in Figures 1-4, a wind turbine rotor house drilling fixture includes a support frame for clamping a rotor house barrel 4, a counterweight frame 21 and a drilling mold 7. The drilling mold 7 is welded to the bottom of the counterweight frame 21 and fixed to the inner wall of the rotor house barrel 4 by a plurality of fastening bolts 5. The support frame is welded to the bottom of the counterweight frame 21 and contacts the outer wall of the rotor house barrel 4. Through the counterweight frame 21, the support frame and the drilling mold 7, the drilling accuracy is ensured while achieving fast and efficient drilling processing of the rotor house barrel 4.

The counterweight frame 21 is provided with a first roller 1 and a second roller 9 at both ends thereof, the first roller 1 being arranged on the outside of the rotor housing cylinder 4, the second roller 9 being arranged on the inside of the rotor housing cylinder 4, the first roller 1 and the second roller 9 being connected to the counterweight frame 21 via a pin shaft 12, respectively, the first roller 1 and the second roller 9 being connected via a pull rope 2, one end of the pull rope 2 being provided with a counterweight block 3, and the other end being provided with a handheld electric drill 6; the handheld electric drill 6 and the counterweight block 3 cooperate with each other, so when the operator uses the handheld electric drill 6 to drill a hole, the counterweight block 3 will pull the handheld electric drill 6 via the first roller 1 and the second roller 9, thereby offsetting part of the gravity of the handheld electric drill 6 and reducing the labor intensity of the operator; at the same time, because the gravity of the handheld electric drill 6 is partially offset, the operator can maintain a better balance on the handheld electric drill 6, so that the handheld electric drill 6 will also drill in a straight line along the hole on the drilling mold 7.

The two ends of the top of the drilling die 7 are symmetrically provided with bearing holes, a first bearing 10 is provided in the bearing hole, a wheel shaft 13 passes through the first bearing 10, a spacer sleeve 19 is sleeved on one end of the wheel shaft 13 close to the outer wall of the rotor housing cylinder 4, a threaded rod 15 is integrally connected to one end close to the inner wall of the rotor housing cylinder 4, a second bearing 8 is sleeved on the wheel shaft 13 between the spacer sleeve 19 and the first bearing 10, the second bearing 8 is in contact with the top of the rotor housing cylinder 4, a nut 14 is provided on the threaded rod 15, and a gasket 20 is provided at the connection between the wheel shaft 13 and the threaded rod 15. One end of the gasket 20 is in contact with the wheel axle 13, and the other end is in contact with the nut 14; the drilling mold 7 is rotated on the rotor housing cylinder 4 through the second bearing 8. The purpose of setting the first bearing 10 is to reduce the supporting load of the second bearing 8, so that the drilling mold 7 can rotate more easily and increase the service life of the second bearing 8; at the same time, the second bearing 8 and the first bearing 10 are limited respectively by the spacer sleeve 19 and the nut 14 gasket 20 to prevent the drilling mold 7 from rolling out of the wheel axle 13 due to the bearing force being offset when the rotation of the bearing.

The support frame includes a vertical rod 17 and an oblique rod 16, which are respectively welded to the counterweight frame 21. The oblique rod 16 is arranged on the outside of the vertical rod 17. A threaded hole is opened at the bottom end of the vertical rod 17. A leveling bolt 18 is inserted into the threaded hole. The head of the leveling bolt 18 contacts the outer wall of the rotor room cylinder 4. The support frame is provided to prevent the rotor room cylinder 4 from being offset due to the force of drilling when drilling the rotor room cylinder 4, so that the support frame plays a supporting role for the rotor room cylinder 4. At the same time, the support frame is also conducive to the counterweight frame 21 to maintain balance, and prevent the counterweight frame 21 and the drilling mold 7 from being broken due to excessive force at the welding point.

The drilling die 7 is provided with a plurality of through holes 11; the handheld electric drill 6 drills holes in the rotor housing cylinder 4 through the through holes 11 on the drilling die 7, thereby reducing the workload, improving the labor efficiency, and also ensuring the size and arrangement accuracy of each hole.

The length of the wheel axle 13 is greater than the wall thickness of the drilling mold 7 and less than the sum of the wall thicknesses of the drilling mold 7 and the rotor housing cylinder 4; to ensure that the second bearing 8 can roll on the top of the rotor housing cylinder 4, the length of the wheel axle 13 must be greater than the wall thickness of the drilling mold 7 and less than the sum of the wall thicknesses of the drilling mold 7 and the rotor housing cylinder 4. If the length of the wheel axle 13 is less than the wall thickness of the drilling mold 7, the second bearing 8 cannot be installed; if the length of the wheel axle 13 is greater than the sum of the wall thicknesses of the drilling mold 7 and the rotor housing cylinder 4, the second bearing 8 may deviate to the outer wall of the rotor housing cylinder 4 after a long period of rotation, thereby causing it to be unable to rotate.

The distance between the first roller 1 and the drilling mold 7 is greater than the distance between the second roller 9 and the drilling mold 7; according to the lever principle, the greater the distance between the first roller 1 and the drilling mold 7, the more gravity of the handheld electric drill 6 is offset by the counterweight 3, and the operator is more able to maintain balance on the handheld electric drill 6.

The diameter of the spacer sleeve 19 is larger than the inner diameter of the second bearing 8, and the outer diameter of the gasket 20 is larger than the diameter of the bearing hole; thus, the second bearing 8 and the first bearing 10 can be limited respectively.

The height of the drilling mold 7 is the same as the height of the rotor housing cylinder 4 , thereby being able to meet the hole position requirements at various positions on the height of the rotor housing cylinder 4 .

The above is based on the present invention as an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims (5)

1. A wind turbine rotor room drilling fixture, comprising a support frame for clamping a rotor room barrel (4), characterized in that it also comprises a counterweight frame (21) and a drilling mold (7), the drilling mold (7) being fixedly connected to the bottom of the counterweight frame (21) and being fixed to the inner wall of the rotor room barrel (4) by a plurality of fastening bolts (5), the support frame being fixedly connected to the bottom of the counterweight frame (21) and being in contact with the outer wall of the rotor room barrel (4); a first roller (1) and a second roller (9) are respectively provided at both ends of the counterweight frame (21), the first roller (1) being arranged on the outer side of the rotor room barrel (4), the second roller (9) being arranged on the inner side of the rotor room barrel (4), the first roller (1) and the second roller (9) being respectively connected to the counterweight frame (21) by a pin shaft (12), and the first roller (1) and the second roller (9) being connected by a pull rope (2). A counterweight (3) is attached to one end of the pull rope (2), and a handheld electric drill (6) is attached to the other end; bearing holes are symmetrically opened at both ends of the top of the drilling mold (7); a first bearing (10) is provided in the bearing hole; a wheel shaft (13) passes through the first bearing (10); a spacer sleeve (19) is sleeved on one end of the wheel shaft (13) close to the outer wall of the rotor housing cylinder (4); a threaded rod (15) is integrally connected to one end of the wheel shaft (13) close to the inner wall of the rotor housing cylinder (4); a second bearing (8) is sleeved on the wheel shaft (13) between the spacer sleeve (19) and the first bearing (10); the second bearing (8) is in contact with the top of the rotor housing cylinder (4); a nut (14) is provided on the threaded rod (15); a gasket (20) is provided at the connection between the wheel shaft (13) and the threaded rod (15); one end of the gasket (20) is in contact with the wheel shaft (13), and the other end is in contact with the nut (14); The support frame comprises a vertical rod (17) and an oblique rod (16), the oblique rod (16) and the vertical rod (17) are respectively fixedly connected to the counterweight frame (21), the oblique rod (16) is arranged outside the vertical rod (17), a threaded hole is formed at the bottom end of the vertical rod (17), a leveling bolt (18) is inserted into the threaded hole, and the head of the leveling bolt (18) contacts the outer wall of the rotor housing cylinder (4); the drilling mold (7) is formed with a plurality of through holes (11); the length of the wheel axle (13) is greater than the wall thickness of the drilling mold (7) and less than the sum of the wall thicknesses of the drilling mold (7) and the rotor housing cylinder (4). 2. A wind turbine rotor room drilling fixture according to claim 1, characterized in that the distance from the first roller (1) to the drilling mold (7) is greater than the distance from the second roller (9) to the drilling mold (7). 3. A wind turbine rotor room drilling fixture according to claim 1, characterized in that the diameter of the spacer (19) is larger than the inner diameter of the second bearing (8). 4. A wind turbine rotor room drilling fixture according to claim 1, characterized in that the outer diameter of the gasket (20) is larger than the diameter of the bearing hole. 5. A wind turbine rotor house drilling fixture according to claim 1, characterized in that the height of the drilling mold (7) is the same as the height of the rotor house cylinder (4).