Bolt stress detection device on high-speed operation equipment

Abstract

The utility model provides a bolt stress detection device on high-speed operation equipment, and belongs to the technical field of stress detection equipment. A fixed disc; sliding grooves are symmetrically formed in the fixing disc. The fixed shell is fixedly connected to the upper end of the fixed disc; the ultrasonic detection probe is used for connecting the head end face of the bolt; a holding rod; and the tensioning mechanism comprises a driving wheel, two connecting rods, two connecting rods, two sliding blocks, two tensioning blocks, a push rod, a swing rod and a driving mechanism. By using the structure of the utility model, stress detection can be conveniently carried out on the bolt in a hand-held manner, and the detection is convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of stress detection equipment, and in particular relates to a bolt stress detection device for high-speed running equipment. Background Art

[0002] Bolts, as a fastening device, are widely used in various devices or equipment. The structural stress generated by bolts when they bear loads for a long time is prone to cause crack defects, especially in bolts on high-speed running equipment such as high-speed rotating devices or high-speed railways.

[0003] The authorization announcement number is "CN219532345U" and the authorization announcement date is 2023.08.15, which records "a wind power bolt stress detection device, the stress detection device is located at the end of the wind power bolt, the stress detection device includes a probe part and a probe part, the probe part contacts the end of the wind power bolt, the probe part picks up the ultrasonic signal and temperature signal of the wind power bolt, the probe part and the probe part are elastically connected, the probe part provides an axial movement space for the probe part, and the probe part provides a force along the radial direction of the probe part to keep the probe part in stable contact with the bolt during movement. The wind power bolt stress detection device proposed by this structure integrates temperature measurement and ultrasonic measurement probes into one, realizes the synchronous detection of temperature and ultrasonic signals at the same position of the end of the wind power bolt, and improves the detection efficiency and accuracy; the elastic connection is used to ensure stable contact between the probe part and the detection surface.

[0004] The above documents improve the detection efficiency and accuracy, but in actual operation, it is necessary to regularly and irregularly detect the stress of the bolts, and the existing bolt stress detection equipment is not convenient and bulky, thus bringing many inconveniences to the detection. Utility Model Content

[0005] The utility model aims to provide a bolt stress detection device on high-speed running equipment. By utilizing the structure of the utility model, the bolt stress detection can be conveniently carried out in a handheld manner, and the detection is convenient and fast.

[0006] To achieve the above purpose, a bolt stress detection device for high-speed running equipment includes:

[0007] The fixed plate has sliding grooves symmetrically arranged on the fixed plate.

[0008] The fixed shell is fixedly connected to the upper end of the fixed plate.

[0009] Ultrasonic testing probe, used for connecting the head end face of the bolt.

[0010] A gripping rod is fixedly connected to the circumferential surface of the fixing plate.

[0011] The tensioning mechanism comprises:

[0012] A driving wheel, the middle part of which is rotatably connected to the fixed shell.

[0013] Two connecting rods, one end of one connecting rod is rotatably connected to one end of the driving wheel, and one end of the other connecting rod is rotatably connected to the other end of the driving wheel, and the two connecting rods are parallel to each other.

[0014] Two connecting rods, one end of one connecting rod is rotatably connected to the other end of one connecting rod, and one end of the other connecting rod is rotatably connected to the other end of the other connecting rod.

[0015] Two sliders are respectively slidably arranged in the slide groove and pass through the slide groove, wherein one slider is rotatably connected to the other end of one of the connecting rods, and the other slider is rotatably connected to the other end of the other connecting rod.

[0016] The two tensioning blocks are respectively fixedly connected to the lower ends of the two sliding blocks, and the two tensioning blocks are respectively provided with coaxial bolt through holes.

[0017] A push rod is rotatably connected to the circumferential surface of the driving wheel.

[0018] The swing rod is rotatably connected to one end of the push rod, and the other end of the swing rod is rotatably connected to the grip rod.

[0019] The driving mechanism is used for driving the push rod.

[0020] When the above structure is used to detect the stress of the bolt, the gripping rod is held and the push rod is driven to move by the driving mechanism, the push rod drives the driving wheel to rotate, the driving wheel drives the connecting rod to move linearly through the connecting rod, the connecting rod drives the slider to slide in the slide slot, thereby driving the two tensioning blocks to move toward or in the opposite direction, so that the distance between the outer sides of the two bolt holes is smaller than the distance of the screw rod of the bolt; then the bolt is passed through the bolt hole, and the nut is connected to the screw rod thread at the end away from the head of the bolt; then the push rod is driven to move by the driving mechanism, the push rod drives the driving wheel to rotate, the driving wheel drives the connecting rod to move linearly through the connecting rod, the connecting rod drives the slider to slide in the slide slot, thereby driving the two tensioning blocks to move in the opposite direction, applying tension to the bolt through the two tensioning blocks, and detecting the stress change of the screw rod through the ultrasonic detection probe. In this way, the stress of the bolt can be detected by holding the device of the utility model, and the detection is convenient and fast, and has a wide range of applications.

[0021] Furthermore, the driving mechanism is a toggle block, which is fixed on the push rod. In this way, when the handle is held by hand, the operator manually applies a force to the toggle block, which can drive the push rod to move, and the operation is convenient and simple.

[0022] Furthermore, the driving mechanism includes a driving block and a linear servo motor. The driving block is fixed on the push rod. One end of the linear servo motor is hinged on the grip rod. The output shaft of the linear servo motor is hinged on the driving block. This structure can drive the driving block to move through the linear servo motor, thereby driving the push rod to move. The force applied to the push rod by the linear servo motor is accurate and controllable. Therefore, the accuracy of bolt stress detection is higher.

[0023] Furthermore, the surface of the grip is covered with a rubber protective sleeve, so that the grip can be better protected.

[0024] Furthermore, anti-skid protrusions are provided on the surface of the rubber protective sleeve, which can increase the friction of holding the handle and make the grip of the handle more reliable.

[0025] Furthermore, two protective strips are fixedly connected to the upper end of the fixed shell, and protective pads are fixedly connected to the upper ends of the two protective strips. In this way, the fixed shell can be stably placed, so that when the device is idle, the wear on the surface of the fixed shell can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is an enlarged view of the first viewing angle of the utility model.

[0028] Figure 2 This is an exploded view of the utility model.

[0029] Figure 3 It is an exploded view of the tensioning mechanism in the utility model.

[0030] Figure 4 It is a cross-sectional view of the fixed disk in the utility model.

[0031] Figure 5 This is an enlarged view of the second viewing angle of the utility model. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-Figure 5, A bolt stress detection device for high-speed running equipment includes a fixing plate 6, a fixing shell 1, an ultrasonic detection probe 18, a gripping rod 9 and a tensioning mechanism.

[0034] In this embodiment, the fixing plate 6 is elliptical, and the fixing plate (6) is symmetrically provided with slide grooves 11 relative to the short axis of the elliptical fixing plate 6. A long groove 111 is provided on the fixing plate 6 below the slide groove, and the upper end width of the long groove 111 is greater than the lower end width.

[0035] The fixed shell 1 is fixedly connected to the upper end of the fixed plate 6 by bolts, and is used to protect the tensioning mechanism, and a receiving cavity is formed between the fixed shell 1 and the fixed plate 6. A notch 100 is provided on the side of the fixed shell 1 for the gripping rod 9 to pass through, and a space is reserved for the push rod 12 to pass through and for the push rod 12 to swing.

[0036] The ultrasonic detection probe 18 is used to connect the head end face of the bolt and is used for bolt stress detection.

[0037] The gripping rod 9 is fixedly connected to the circumferential surface of the fixing plate 6, so as to facilitate the operator to take the device.

[0038] The tensioning mechanism comprises a driving wheel 14, two connecting rods 17, a connecting rod 13, two sliding blocks 16, two tensioning blocks 15, a push rod 12, a swing rod 10 and a driving mechanism.

[0039] The driving wheel 14 is elliptical in shape, and the middle portion of the driving wheel is rotatably connected to the bottom of the fixed shell 1 via a rotating shaft.

[0040] Among the two connecting rods, one end of one connecting rod 17 is rotatably connected to one end of the driving wheel 14, and in the present embodiment, it is rotatably connected to one end of the long axis of the driving wheel. One end of the other connecting rod 17 is rotatably connected to the other end of the driving wheel 14, and in the present embodiment, it is connected to the other end of the long axis of the driving wheel. The two connecting rods 17 are parallel to each other.

[0041] Among the two connecting rods 13 , one end of one of the connecting rods 13 is rotatably connected to the other end of one of the connecting rods 17 , and one end of the other connecting rod 13 is rotatably connected to the other end of the other connecting rod 17 .

[0042] The two sliders 16 are slidably disposed in the slide groove 11 and pass through the slide groove 11 , respectively. One slider 16 is rotatably connected to the other end of one of the connecting rods 13 , and the other slider 16 is rotatably connected to the other end of the other connecting rod 13 .

[0043] The two tensioning blocks 15 are respectively fixedly connected to the lower ends of the two sliding blocks 16 , and the two tensioning blocks 15 are respectively provided with coaxial bolt through holes 151 .

[0044] The push rod 12 is rotatably connected to the circumferential surface of the driving wheel 14. In the present embodiment, it is connected to one end of the stub shaft of the driving wheel.

[0045] The swing rod 10 is rotatably connected to one end of the push rod 12 , and the other end of the swing rod 10 is rotatably connected to the grip rod 9 .

[0046] The driving mechanism is a toggle block 3, which is fixed on the push rod 12; of course, it can also be another structure. When the force acts on the toggle block 3, the push rod 12 can be moved. Of course, the driving mechanism can also be another structure, that is: the driving mechanism includes a driving block and a linear servo motor, the driving block is fixed on the push rod 12, one end of the linear servo motor is hinged on the grip 9, and the output shaft of the linear servo motor is hinged on the driving block. When the linear servo motor is working, the push rod is driven to move through the driving block.

[0047] like Figure 2 As shown, the surface of the grip 9 is covered with a rubber protective sleeve 2, which can increase the friction between the hand and the telescopic grip 9, reduce the scratches on the worker's hand caused by the grip 9, and protect the grip 9. In this embodiment, a hole is opened on the side of the rubber protective sleeve 2 for the toggle block 3 or the driving block to pass through, and the hole is larger than the cross-section of the toggle block 3 or the driving block, so as to leave space for the toggle block 3 or the driving block to move.

[0048] like Figure 1 As shown, two connecting blocks 4 are fixedly connected to the side ends of the protective sleeve 2 , which can be used to fix the rod body 5 on the surface of the handle 9 .

[0049] like Figure 1 As shown, the upper end of the fixed shell 1 is fixedly connected to two protection strips 7, which can effectively support the equipment. The upper ends of the two protection strips 7 are fixedly connected to protective pads 8, which can reduce the wear of the surface of the fixed shell 1 caused by the ground when the equipment is idle.

[0050] The working principle and use process of the utility model are as follows: the gripping rod is held in the hand, and the push rod is driven to move through the driving mechanism, the push rod drives the driving wheel to rotate, the driving wheel drives the connecting rod to move linearly through the connecting rod, and the connecting rod drives the slider to slide in the slide groove, thereby driving the two tensioning blocks to move toward or oppositely, so that the distance between the outer sides of the two bolt holes is less than the distance of the screw rod of the bolt; then the bolt is passed through the bolt hole, and the nut is connected to the screw rod thread at the end away from the head of the bolt; then the push rod is driven to move through the driving mechanism, the push rod drives the driving wheel to rotate, the driving wheel drives the connecting rod to move linearly through the connecting rod, and the connecting rod drives the slider to slide in the slide groove, thereby driving the two tensioning blocks to move in the opposite direction, and the bolt is given tension through the two tensioning blocks, and the stress change of the screw rod is detected by the ultrasonic detection probe. In this way, the stress of the bolt can be detected by holding the device of the utility model, and the detection is convenient and fast, and has a wide range of applications. In the utility model, the principle of using an ultrasonic detection probe to detect the stress of the screw rod belongs to the prior art and will not be repeated here.

Claims

1. A bolt stress detection device on high-speed running equipment, characterized in that: include: A fixed plate (6); slide grooves (11) are symmetrically arranged on the fixed plate (6); A fixed shell (1) fixedly connected to the upper end of the fixed plate (6); An ultrasonic testing probe (18) is used to connect the head end surface of the bolt; A gripping rod (9) fixedly connected to the circumferential surface of the fixing plate (6); The tensioning mechanism comprises: A driving wheel (14), wherein a middle portion of the driving wheel (14) is rotatably connected to the fixed shell (1); Two connecting rods (17), one end of one connecting rod (17) being rotatably connected to one end of the driving wheel (14), and one end of the other connecting rod (17) being rotatably connected to the other end of the driving wheel (14), and the two connecting rods (17) being parallel to each other; Two connecting rods (13), one end of one connecting rod (13) being rotatably connected to the other end of one connecting rod (17), and one end of the other connecting rod (13) being rotatably connected to the other end of the other connecting rod (17); Two sliders (16) are respectively slidably disposed in the slide groove (11) and pass through the slide groove (11), wherein one slider (16) is rotatably connected to the other end of one of the connecting rods (13), and the other slider (16) is rotatably connected to the other end of the other connecting rod (13); Two tensioning blocks (15) are respectively fixedly connected to the lower ends of the two sliding blocks (16), and the two tensioning blocks (15) are respectively provided with coaxial bolt through holes (151); A push rod (12) rotatably connected to the circumferential surface of the driving wheel (14); A swing rod (10) is rotatably connected to one end of the push rod (12), and the other end of the swing rod (10) is rotatably connected to the grip rod (9); The driving mechanism is used to drive the push rod (12).

2. The bolt stress detection device for high-speed running equipment according to claim 1, characterized in that: The driving mechanism is a toggle block (3), and the toggle block (3) is fixed on the push rod (12).

3. The bolt stress detection device for high-speed running equipment according to claim 1 is characterized in that: The driving mechanism comprises a driving block (101) and a linear servo motor (102); the driving block (101) is fixed on the push rod (12); one end of the linear servo motor (102) is hinged on the grip rod (9); and the output shaft of the linear servo motor (102) is hinged on the driving block (101).

4. The bolt stress detection device for high-speed running equipment according to claim 1 is characterized in that: The surface of the grip rod (9) is covered with a rubber protective sleeve (2).

5. The bolt stress detection device for high-speed running equipment according to claim 1 is characterized in that: An anti-slip protrusion (21) is provided on the surface of the rubber protective sleeve (2).

6. The bolt stress detection device for high-speed running equipment according to claim 1, characterized in that: Two protection strips (7) are fixedly connected to the upper end of the fixed shell (1), and protection pads (8) are fixedly connected to the upper ends of the two protection strips (7).

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