Drilling machine pulley dynamic balance test connecting device

Abstract

The utility model discloses a drilling machine pulley dynamic balance test connecting device which comprises a dynamic balancing machine, a connecting flange and a flange shaft, the connecting flange and the flange shaft are connected to the dynamic balancing machine, the right end of the dynamic balancing machine is connected with the connecting flange, and the right end of the connecting flange is connected with the flange shaft; the dynamic balancing machine, the connecting flange and the flange shaft are connected into an integral structure; the middle of the flange shaft is fixedly connected with a clamping flange, the clamping flange is connected with a step core shaft through a sunk screw, and the left side of the step core shaft is provided with a step flange plate which is connected with the step core shaft through a plurality of groups of outer hexagon bolts which are evenly distributed on the circumference. A single-web pulley is clamped between the step flange plate and the step mandrel, and the clamping state of the single-web pulley is kept through pre-tightening of an outer hexagon bolt. The pulley workpiece and the dynamic balancing machine are connected into a whole, so that the pulley clamping and positioning accuracy is improved, the coaxiality is met, the pulley does not swing or jump during high-speed rotation, the test requirements are met, and the working efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling equipment, in particular to a drilling rig pulley dynamic balance test connection device. Background Art

[0002] The lifting system of the oil drilling rig is the core of the drilling rig. It mainly consists of equipment such as the derrick, the crown block, the traveling block, the big hook, and the winch. The lifting system of the drilling rig is used to place and suspend the traveling system, the lifting ring, the elevator, etc., and bear the weight of the drill string in the well. The drill pipe and casing must be stored during the drilling operation. The crown block and the traveling block form the pulley system of the lifting system. The crown block is a fixed pulley group fixed on the top of the derrick, and the traveling block is a movable pulley group. By using the principle of labor-saving movable pulleys, the drilling rig can lift more than 100 tons or even hundreds of tons of weight during drilling, reducing the load of the winch, so that the lifting system can obtain great mechanical efficiency. The pulley is an important part of the crown block and the traveling block. After the pulley is dynamically balanced, the yaw vibration and jumping can be reduced, and the stability and safety of the pulley in operation can be improved.

[0003] When the pulley of the drilling rig is dynamically balanced, it cannot be clamped on the dynamic balancing machine. In addition, the pulley has a large diameter and heavy weight, and the experiment requires a high speed. The pulley dynamic balancing connection device solves the problem that the pulley cannot be clamped on the dynamic balancing machine. The pulley is connected to the dynamic balancing machine as a whole using flange shafts, step flanges, flange mandrels and other process equipment. The installation is quick, the installation gap is eliminated, the balance of the pulley is improved, and the operation risk of the pulley dynamic balancing test is reduced. Utility Model Content

[0004] The utility model aims to provide a drilling rig pulley dynamic balance test connection device to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drilling rig pulley dynamic balancing test connection device, comprising a dynamic balancing machine, a connecting flange connected to the dynamic balancing machine and a flange shaft, wherein the right end of the dynamic balancing machine is connected to the connecting flange, and the right end of the connecting flange is connected to the flange shaft; the shape of the flange shaft is adapted to the double-web pulley to be dynamically balanced, and the dynamic balancing machine, the connecting flange and the flange shaft are connected as an integral structure; a clamping flange is fixedly connected to the middle of the flange shaft, and the clamping flange is connected to the step core shaft through a countersunk screw, and a step flange plate connected to the step core shaft through an array of external hexagonal bolts evenly distributed around the circumference is provided on the left side of the step core shaft, a single-web pulley is clamped and connected between the step flange plate and the step core shaft, and the clamping state of the single-web pulley is maintained by pre-tightening of the external hexagonal bolts.

[0006] Preferably, the step mandrel is in a circumferentially symmetrical step shape.

[0007] Preferably, the clamping flange is a plate-type flat-weld flange.

[0008] In the present utility model, the connecting flange connects the universal shaft of the dynamic balancing machine with the flange shaft, and the connection is reliable and stable. The flange shaft uses a large-sized solid shaft as the main shaft, with a diameter reaching 160 mm. After overall machining, the straightness, cylindricity, and runout meet the requirements, satisfying the vibration and strength borne by the drilling rig pulley during the dynamic balance test, and enhancing the overall stiffness and stability of the test connection equipment. The stepped flange plate and the stepped mandrel are machined in cooperation, and the coaxiality, symmetry, and flatness meet the test requirements. High-grade strength external hexagon bolts and countersunk head bolts are used to strengthen the stability of the bolt connection. Before conducting the dynamic balance test on the pulley, the entire test connection equipment has completed the dynamic balance test, meeting the balance requirements and satisfying the conditions for the pulley to conduct the dynamic balance test.

[0009] The working process of the present utility model is as follows:

[0010] When the present utility model is in use, the dynamic balancing machine and the flange shaft are connected through the connecting flange, and then the double-web pulley to be tested is connected to the flange plate on the flange shaft. After the double-web pulley is completed, the stepped mandrel is connected to the flange on the flange shaft through countersunk head screws, the single-web pulley is placed, and then the stepped flange plate is connected to the stepped mandrel through external hexagon bolts to make it an integral whole after clamping, and the dynamic balance test is conducted on the single-web pulley.

[0011] The beneficial effects of the present utility model are as follows:

[0012] (1) In the present utility model, the connecting flange connects the universal shaft of the dynamic balancing machine with the flange shaft, and the connection is reliable and stable. The flange shaft uses a large-sized solid shaft as the main shaft, with a diameter reaching 160 mm. After overall machining, the straightness, cylindricity, and runout meet the requirements, satisfying the vibration and strength borne by the drilling rig pulley during the dynamic balance test, and enhancing the overall stiffness and stability of the test connection equipment.

[0013] (2) In the present utility model, the stepped flange plate and the stepped mandrel are machined in cooperation, and the coaxiality, symmetry, and flatness meet the test requirements. High-grade strength external hexagon bolts and countersunk head bolts are used to strengthen the stability of the bolt connection.

[0014] (3) The present utility model connects the pulley workpiece and the dynamic balancing machine as a whole, improving the accuracy of pulley clamping and positioning, meeting the coaxiality, and ensuring that the pulley does not swing or jump during high-speed rotation, meeting the test requirements and improving the work efficiency and product quality.

[0015] (4) The present utility model adopts a detachable connection method of bolt clamps, saving the clamping time and being convenient for clamping. Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 It is a schematic diagram of the working process of the present utility model;

[0018] In the figure: 1. Dynamic balancing machine, 2. Connecting flange, 3. Flange shaft, 4. Hexagon socket head bolt, 5. Step flange, 6. Step mandrel, 7. Countersunk head screw, 8. Clamping flange. Specific embodiments

[0019] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0020] As Figure 1-2 shown, a connection device for dynamic balance test of a drilling pulley includes a dynamic balancing machine 1, a connecting flange 2 connected to the dynamic balancing machine 1, and a flange shaft 3. The right end of the dynamic balancing machine 1 is connected to the connecting flange 2, and the right end of the connecting flange 2 is connected to the flange shaft 3; the shape of the flange shaft 3 is adapted to the double-web pulley to be dynamically balanced, and the dynamic balancing machine 1, the connecting flange 2, and the flange shaft 3 are connected as an integral structure; a clamping flange 8 in the form of a plate type butt-welding flange is fixedly connected to the middle of the flange shaft 3, and the clamping flange 8 is connected to the step mandrel 6 through countersunk head screws 7. The step mandrel 6 is in an axially symmetric stepped shape. A step flange 5 connected to the step mandrel 6 through an array of circumferentially evenly distributed hexagon socket head bolts 4 is provided on the left side of the step mandrel 6. A single-web pulley is clamped and connected between the step flange 5 and the step mandrel 6, and the clamping state of the single-web pulley is maintained through the pre-tightening of the hexagon socket head bolts 4.

[0021] The working process of the present utility model is as follows:

[0022] When the present utility model is in use, the dynamic balancing machine 1 and the flange shaft 3 are connected through the connecting flange 2, and then the double-web pulley to be tested is connected to the flange on the flange shaft 3. After the double-web pulley is tested, the step mandrel 6 is connected to the flange on the flange shaft 3 through countersunk head screws 7, the single-web pulley is placed, and then the step flange 5 is connected to the step mandrel through hexagon socket head bolts 4 to make it an integral whole after clamping, and a dynamic balance test is performed on the single-web pulley.

[0023] The present utility model connects the pulley workpiece and the dynamic balancing machine as a whole, improves the accuracy of pulley clamping and positioning, meets the coaxiality requirement, the pulley does not swing or jump during high-speed rotation, meets the test requirements, and improves the work efficiency and product quality.

[0024] The above are only preferred examples of the present utility model. It should be pointed out that for those of ordinary skill in the art, under the technical inspiration provided by the present utility model, as common general knowledge in the mechanical field, other equivalent variations and improvements can also be made, which should also be regarded as the protection scope of the present utility model.

Claims

1. A dynamic balance test connection device for a drilling rig pulley, comprising a dynamic balancing machine (1), a connecting flange (2) connected to the dynamic balancing machine (1), and a flange shaft (3), characterized in that: The right end of the dynamic balancing machine (1) is connected to the connecting flange (2), and the right end of the connecting flange (2) is connected to the flange shaft (3); the shape of the flange shaft (3) is adapted to the double-web pulley to be dynamically balanced, and the dynamic balancing machine (1), the connecting flange (2) and the flange shaft (3) are connected as an integral structure; A clamping flange (8) is fixedly connected to the middle of the flange shaft (3), the clamping flange (8) is connected to the stepped mandrel (6) by countersunk head screws (7), and a stepped flange plate (5) connected to the stepped mandrel (6) by an array of hexagon head bolts (4) evenly distributed in a circumference is arranged on the left side of the stepped mandrel (6). A single-web pulley is clamped and connected between the stepped flange plate (5) and the stepped mandrel (6), and the clamping state of the single-web pulley is maintained by the pre-tightening of the hexagon head bolts (4).

2. The dynamic balance test connection device for a drilling rig pulley according to claim 1, wherein: The stepped mandrel (6) is of a circumferentially symmetric stepped shape.

3. The dynamic balance test connection device for a drilling rig pulley according to claim 1 or 2, characterized in that: The clamping flange (8) is a plate type slip-on flange.

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