CN-224216449-U - Be used for wind-powered electricity generation socket head cap screw stress check out test set

Abstract

The utility model belongs to the technical field of wind power bolt stress detection, in particular to a wind power socket head cap bolt stress detection device, which aims at solving the problems that the stress at the joint of a screw rod and a bolt head can not be detected and the adjustment capability of a test part is insufficient in the prior art, the scheme below is proposed now, including the board, board top outer wall is through screw fixedly connected with cylinder, and cylinder piston rod fixedly connected with L template, L template one side outer wall welding has the rack. According to the utility model, through the design of the screw rod locating port and the screw rod head locating groove on the double-head fixing seat, the screw rod head and the screw rod of the wind power inner hexagon bolt can be rapidly tested respectively, the fatigue crack risk is effectively identified, and the movable seat and the screw rod are in linkage design, so that the movable block can slide along the inner wall of the lifting plate, the clamping area of the screw rod is changed, the thread root or the middle part of the screw rod is aligned with the tension loading point, different testing requirements are met, and the coverage rate and accuracy of factory detection are improved.

Inventors

• WANG HAO
• DENG HUI
• Fan Zhangshuai
• FENG KAIHANG
• MA ZHIHANG
• Shan Mengjuan
• JU GUANGYU
• WANG RUI
• QIAO LIANG
• Pan Yinkui
• LIU WENSHENG
• JIANG YE
• JIA SHAOWEI
• ZHU GUOBIN

Assignees

• 中国大唐集团科学技术研究总院有限公司中南电力试验研究院
• 中国大唐集团科学技术研究总院有限公司

Dates

Publication Date

20260508

Application Date

20250512

Claims (7)

1. 1. The utility model provides a be used for wind-powered electricity generation hexagon socket head cap screw stress test equipment, includes board (1), its characterized in that, board (1) top outer wall is through screw fixedly connected with cylinder (2), and cylinder (2) piston rod fixedly connected with L template (3), L template (3) one side outer wall welding has rack (4), and the meshing has gear (5) on the outer wall of rack (4), rotation axis (6) are installed in the center department penetration of gear (5) inner wall, and rotation axis (6) top outer wall fixedly connected with double-end fixing base (7); The double-end fixing base (7) one side is provided with movable seat (8), and movable seat (8) top outer wall welding has movable block (9), sliding connection has lifting plate (10) on the outer wall of movable block (9), and movable block (9) inner wall spiro union has lead screw (11), lead screw (11) one end outer wall rotates to be connected on the top outer wall of lifting plate (10), U template (12) are welded to lifting plate (10) top outer wall, and hydraulic cylinder (13) are installed to U template (12) top outer wall.
2. 2. The device for detecting the stress of the inner hexagon bolts for wind power according to claim 1, wherein a tension sensor is arranged at the joint of the U-shaped plate (12) and the hydraulic cylinder (13).
3. 3. The wind power socket head cap bolt stress detection device according to claim 1, wherein a wind power socket head cap bolt (14) is placed between the double-head fixing seat (7) and the movable seat (8), a nut is screwed on the outer wall of the wind power socket head cap bolt (14), and the nut is tightly attached to the outer wall of the movable seat (8).
4. 4. A device for detecting the stress of a wind power socket head cap screw according to claim 3, wherein the wind power socket head cap screw (14) comprises a screw rod (141) and a screw head (142) arranged on the outer wall of one end of the screw rod (141), and the screw rod (141) is placed on the inner walls of the double-head fixing seat (7) and the movable seat (8).
5. 5. The device for detecting the stress of the inner hexagon bolt for wind power according to claim 1, wherein a screw positioning opening (16) is formed in the outer wall of one side of the double-head fixing seat (7), a bolt head positioning groove (17) is formed in the outer wall of the other side of the double-head fixing seat (7), the screw (141) is arranged on the inner wall of the screw positioning opening (16) in a penetrating mode, and the size of the bolt head (142) is matched with that of the bolt head positioning groove (17).
6. 6. The device for detecting the stress of the inner hexagon bolts for wind power according to claim 1, wherein a connecting plate (18) is fixedly connected to the outer wall of the hydraulic cylinder (13), an electric control cabinet (19) is fixedly connected to the outer wall of one side of the connecting plate (18) through screws, the electric control cabinet (19) is mounted on the outer wall of the top of the machine table (1), and the hydraulic cylinder (13) is connected with the air cylinder (2), the hydraulic cylinder (13) and the tension sensor through signal wires.
7. 7. The device for detecting the stress of the inner hexagon bolts for wind power according to claim 1, wherein the rotating shaft (6) is rotatably connected to the top outer wall of the machine table (1) through a bearing, a limiting ring (15) is welded to the bottom outer wall of the rotating shaft (6), and the limiting ring (15) is tightly attached to the top inner wall of the machine table (1).

Description

Be used for wind-powered electricity generation socket head cap screw stress check out test set Technical Field The utility model relates to the technical field of wind power bolt stress detection, in particular to a wind power socket head cap bolt stress detection device. Background The wind power inner hexagon bolt is a high-strength fastener special for wind power generation equipment, and structurally comprises a screw rod and an integrally formed hexagon bolt head. Because the wind driven generator bears complex alternating loads (such as wind load, vibration and the like) for a long time, the stress distribution of the bolts directly influences the stability and the safety of the equipment. Such bolts are typically made of high strength alloy steel and are required to meet stringent tensile, shear and fatigue performance requirements. In wind power equipment, key parts such as Yu Datong connection, blade fixing and gear box assembly are widely used for inner hexagon bolts, and accurate detection of stress states is important for preventing bolt breakage and prolonging equipment service life. At present, the stress detection technology of the wind power inner hexagon bolt before delivery has the following defects: The stress at the joint of the screw rod and the screw rod head cannot be detected, namely the existing detection equipment adopts unidirectional stretching or torque test, only stress data of the screw rod part can be obtained, and fatigue cracks at the joint (stress concentration area) of the screw rod head and the screw rod are difficult to capture, so that the reliability of products leaving the factory is affected. The test part has insufficient adjustment capability, namely, the clamping position of the bolt is fixed, and the test part cannot be adjusted according to actual requirements. For example, if stress distribution (such as the root of a thread or the middle of a screw) of different sections of a bolt needs to be detected, a clamp needs to be replaced or the bolt needs to be reinstalled, the operation is complex, the efficiency is low, and the high-efficiency requirement of batch detection before delivery is difficult to meet. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the stress detection equipment for the wind power inner hexagon bolts, which overcomes the defects of the prior art and effectively solves the problems that the stress at the joint of a screw rod and a bolt head cannot be detected and the adjustment capability of a test part is insufficient. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a be used for wind-powered electricity generation hexagon socket head cap screw stress test equipment, includes the board, board top outer wall is through screw fixedly connected with cylinder, and cylinder piston rod fixedly connected with L template, L template one side outer wall welding has the rack, and the meshing has the gear on the outer wall of rack, gear inner wall center department runs through and installs the rotation axis, and rotation axis top outer wall fixedly connected with double-end fixing base; The double-end fixing base one side is provided with the movable seat, and movable seat top outer wall welding has the movable block, sliding connection has the lifting plate on the outer wall of movable block, and movable block inner wall spiro union has the lead screw, lead screw one end outer wall rotates to be connected on the top outer wall of lifting plate, lifting plate top outer wall welding has the U template, and hydraulic cylinder is installed to U template top outer wall. Preferably, a tension sensor is arranged at the joint of the U-shaped plate and the hydraulic cylinder. Preferably, a wind power inner hexagon bolt is arranged between the double-head fixed seat and the movable seat, a nut is screwed on the outer wall of the wind power inner hexagon bolt, and the nut is tightly attached to the outer wall of the movable seat. Preferably, the wind power inner hexagon bolt comprises a screw and a bolt head arranged on the outer wall of one end of the screw, wherein the screw is arranged on the inner walls of the double-head fixing seat and the movable seat. Preferably, the screw rod locating hole has been seted up to double-end fixing base one side outer wall, and the bolt head constant head tank has been seted up to double-end fixing base opposite side outer wall, the screw rod runs through and sets up on the inner wall of screw rod locating hole, and the size looks adaptation of bolt head and bolt head constant head tank. Preferably, the outer wall of the hydraulic cylinder is fixedly connected with a connecting plate, the outer wall of one side of the connecting plate is fixedly connected with an electric control cabinet through a screw, the electric control cabinet is arranged on the outer wall of the top of the machine ta