Rail type movable bolt tightening device

Abstract

The utility model relates to a rail type movable bolt tightening device which comprises a base, a clamping arm and a mounting arm are arranged on the base, the clamping arm is provided with a clamping groove, the mounting arm extends outwards relative to the base in the X direction, and the mounting arm is connected with the base in a sliding mode and can ascend and descend relative to the base in the Z direction. A rotating sleeve is arranged at the end, away from the base, of the mounting arm, can rotate around the Z axis relative to the mounting arm, and is arranged to sleeve a bolt and drive the bolt to rotate together so as to tighten or unscrew the bolt. The rail type movable bolt tightening device can automatically tighten or untighten the bolt on the blocking plate, operation of workers is not needed, and therefore the workers are prevented from being radiated.

Description

Technical Field

[0001] The utility model relates to the field of nuclear power plant equipment, and more specifically to a track-type movable bolt tightening device. Background Art

[0002] The steam generator is one of the main equipment in a nuclear power plant. It is connected to the reactor pressure vessel and is used to transfer the heat generated by the reactor to the secondary side of the steam generator. The generated steam is dried by the primary and secondary steam-water separators and then drives the steam turbine generator to generate electricity.

[0003] When overhauling a steam generator, in order to prevent foreign matter on the primary side of the steam generator from entering the pressure vessel and damaging the core fuel, it is necessary to block the water inlet of the steam generator with a plugging plate, and then remove the plugging plate after the overhaul is completed. In the prior art, workers usually enter the steam generator from the entrance and tighten or loosen the bolts to achieve the installation and removal of the plugging plate.

[0004] However, nuclear power plants have radiation, and workers will be exposed to radiation when loading and unloading plugs, which will affect their health. Utility Model Content

[0005] The utility model aims to provide a track-type movable bolt tightening device, which is used for automatically tightening or loosening the bolts on the blocking plate to prevent the workers from being affected by radiation.

[0006] Based on the above purpose, the utility model provides a rail-type mobile bolt tightening device, including a base, a clamping arm and a mounting arm are provided on the base, the clamping arm has a clamping groove, the mounting arm extends outward along the X direction relative to the base, the mounting arm is slidably connected to the base and can be lifted and lowered along the Z direction relative to the base, a rotating sleeve is provided at one end of the mounting arm away from the base, the rotating sleeve can rotate around the Z axis relative to the mounting arm, and the rotating sleeve is configured to cover the bolt and rotate with the bolt to tighten or loosen the bolt.

[0007] Furthermore, a lifting drive device is provided on the base or the mounting arm, and the lifting drive device is configured to drive the mounting arm to rise and fall along the Z direction relative to the base.

[0008] Furthermore, the lifting drive device is a cylinder or a ball screw.

[0009] Furthermore, a rotating shaft extending along the Z direction is provided on one end of the mounting arm away from the base, and the rotating sleeve is fixedly connected to the rotating shaft so that the rotating sleeve rotates around the Z axis together with the rotating shaft.

[0010] Furthermore, a rotating motor is provided on the mounting arm, and the rotating motor is connected to the rotating shaft.

[0011] Furthermore, a plurality of rollers are provided at the bottom of the base.

[0012] Furthermore, a roller motor is provided on the base, and the roller motor is configured to drive a plurality of rollers to roll.

[0013] Furthermore, a pin hole is provided on one end of the mounting arm connected to the base.

[0014] Furthermore, one end of the mounting arm connected to the base is provided with a magnet or is formed as a magnet.

[0015] Furthermore, the lifting drive device, the rotating motor and the roller motor are all connected to a control device.

[0016] The track-type movable bolt tightening device of the utility model can make the rotating sleeve be put on the bolt by lifting and lowering the installation arm, and then the rotating sleeve can rotate the bolt to realize the tightening or loosening of the bolt, without the need for operation by workers, so that the workers can be protected from radiation effects; the track-type movable bolt tightening device can move along a circular track on the blocking plate to complete the tightening or loosening of the bolts at the screw holes of the blocking plate, thereby realizing the loading and unloading of the blocking plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a track-type movable bolt tightening device according to an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the installation relationship between the track-type movable bolt tightening device and the blocking plate according to the utility model;

[0019] Figure 3 It is a structural schematic diagram of the track-type movable bolt tightening device according to an embodiment of the utility model when in use;

[0020] Figure 4 This is a schematic diagram of the structure of the track-type mobile bolt tightening device according to an embodiment of the utility model after being adsorbed by a robotic arm after use. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present utility model are given below in conjunction with the accompanying drawings and described in detail.

[0022] like Figure 1As shown, an embodiment of the utility model provides a rail-type mobile bolt tightening device 100, including a base 110, on which a clamping arm 120 and a mounting arm 130 are provided, the clamping arm 120 has a clamping groove 121, and the mounting arm 130 extends outward along the X direction relative to the base 110, the mounting arm 130 is slidably connected to the base 110, and can be lifted and lowered along the Z direction relative to the base 110; a rotating sleeve 140 is provided at one end of the mounting arm 130 away from the base 110, and the rotating sleeve 140 can rotate around the Z axis relative to the mounting arm 130, and the rotating sleeve 140 is used to cover the head of the bolt and rotate with the bolt, thereby tightening or loosening the bolt.

[0023] like Figure 2 As shown, the track type movable bolt tightening device 100 is usually installed on the plugging plate 200, and the plugging plate 200 is provided with a circular track 210, which is formed in a convex shape, and the clamping groove 121 can accommodate the circular track 210 (that is, the circular track 210 can be clamped into the clamping groove 121), so that the track type movable bolt tightening device 100 can be installed on the plugging plate 200, and can slide on the plugging plate 200 along the circular track 210. The plugging plate 200 is provided with a plurality of screw holes 220 along the circumferential direction, and the track type movable bolt tightening device 100 can move to each screw hole 220, and tighten or loosen the bolts there by rotating the sleeve 140.

[0024] In some embodiments, the base 110 or the mounting arm 130 may be provided with a lifting drive device (not shown in the figure) for driving the mounting arm 130 to rise and fall relative to the base 110 in the Z direction. For example, the lifting drive device may be a cylinder, which is provided on one of the base 110 and the mounting arm 130, and the cylinder shaft is connected to the other of the base 110 and the mounting arm 130, and the mounting arm 130 can be lifted and lowered in the Z direction by the extension and retraction of the cylinder shaft. The lifting drive mechanism may also be a ball screw structure, in which a lead screw is provided on the base 110 in the Z direction, a lifting motor is connected to the lead screw, and a nut is connected to the mounting arm 130, and the lead screw is driven to rotate by the lifting motor, so that the nut moves along the lead screw, and the mounting arm 130 moves along the Z direction with the nut.

[0025] In some embodiments, a rotating shaft (not shown in the figure) extending along the Z direction may be provided on one end of the mounting arm 130 away from the base 110. The rotating shaft can rotate around its own axis, and the rotating sleeve 140 is fixedly connected to the rotating shaft so as to rotate around the Z axis together with the rotating shaft.

[0026] In some embodiments, a rotary motor (not shown) may be provided on the mounting arm 130 , and an output shaft of the rotary motor is connected to the rotating shaft to drive the rotating shaft and the rotating sleeve 140 to rotate around the Z axis.

[0027] In some embodiments, a plurality of rollers 150 may be provided at the bottom of the base 110, which roll on the plugging plate 200, so that the track-type mobile bolt tightening device 100 can roll on the plugging plate 200. A roller motor (not shown in the figure) may also be provided on the base 110, which is used to drive the rollers 150 to roll, that is, drive the track-type mobile bolt tightening device 100 to roll on the plugging plate 200.

[0028] like Figure 3 As shown, when in use, the plugging plate 200 is fixed to the end of the mechanical arm 300, and the track-type movable bolt tightening device 100 is installed on the plugging plate 200. The plugging plate 200 is sent to the water inlet of the steam generator by the mechanical arm 300, and the position of the plugging plate 200 is adjusted so that it fits the water inlet and the screw holes 220 are aligned one by one with the screw holes on the water inlet. Then the track-type movable bolt tightening device 100 can move along the circular track 210 so that the rotating sleeve 140 is located directly above the bolt of a certain screw hole 220. Then the mounting arm 130 descends so that the rotating sleeve 140 is sleeved on the head of the bolt and then rotates with the bolt to tighten or loosen the bolt. When rotating, the mounting arm 130 will descend or rise as the bolt is tightened or loosened; after tightening or loosening the bolt at the screw hole 220, the track-type movable bolt tightening device 100 moves to other screw holes 220 in turn to complete the tightening or loosening of the bolts at each screw hole 220.

[0029] In some embodiments, a pin hole 131 is provided on one end of the mounting arm 130 connected to the base 110, and a pin 310 is provided on the mechanical arm 300, and the pin 310 matches the pin hole 131. Figure 4 As shown, after the track-type mobile bolt tightening device 100 completes the tightening of the bolt, the track-type mobile bolt tightening device 100 can be moved to the bottom of the pin 310, and then the mounting arm 130 rises to insert the pin 310 into the pin hole 131, so that the track-type mobile bolt tightening device 100 is fixed to the robot arm 300, making it convenient for the robot arm 300 to bring the track-type mobile bolt tightening device 100 out of the steam generator.

[0030] In some embodiments, a magnet is provided on one end of the mounting arm 130 connected to the base 110 or is formed as a magnet, so that after the pin 310 is inserted into the pin hole 131, the mounting arm 130 can be adsorbed on the robotic arm 300 and further fixed, so that the robotic arm 300 can smoothly remove the track-type mobile bolt tightening device 100 from the blocking plate 20 and take it out of the steam generator.

[0031] In some embodiments, the lifting drive device, the rotating motor, the roller motor, etc. can be connected to the control device to remotely control the lifting and lowering of the mounting arm 130, the rotation of the rotating sleeve 140, and the rolling of the track-type mobile bolt tightening device 100 on the blocking plate 200 through the control device, thereby controlling the track-type mobile bolt tightening device 100 to tighten or loosen the bolts at the screw holes of the blocking plate 200, thereby realizing the loading and unloading of the blocking plate 200.

[0032] The track-type mobile bolt tightening device 100 of the embodiment of the utility model can make the rotating sleeve 140 be put on the bolt by lifting and lowering the mounting arm 130, and then the bolt can be tightened or loosened by rotating the rotating sleeve 140 with the bolt, without the need for workers to operate, thereby avoiding the workers from being exposed to radiation; the track-type mobile bolt tightening device 100 can move along the circular track 210 on the blocking plate 200 to complete the tightening or loosening of the bolts at each screw hole 220 of the blocking plate 200, thereby realizing the loading and unloading of the blocking plate 200.

[0033] The above is only a preferred embodiment of the utility model, and is not intended to limit the scope of the utility model. The above embodiments of the utility model can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the contents of the specification of the utility model application fall within the scope of protection of the claims of the utility model patent. The conventional technical contents are not described in detail in the utility model.

Claims

1. A track-type mobile bolt tightening device, characterized in that: It includes a base, on which a clamping arm and a mounting arm are provided, the clamping arm has a clamping groove, the mounting arm extends outwardly along the X direction relative to the base, the mounting arm is slidably connected to the base and can be lifted and lowered along the Z direction relative to the base, a rotating sleeve is provided at one end of the mounting arm away from the base, the rotating sleeve can rotate around the Z axis relative to the mounting arm, and the rotating sleeve is configured to cover a bolt and rotate with the bolt to tighten or loosen the bolt.

2. The track-type mobile bolt tightening device according to claim 1, characterized in that: A lifting drive device is disposed on the base or the mounting arm, and the lifting drive device is configured to drive the mounting arm to rise and fall relative to the base along the Z direction.

3. The track-type moving bolt tightening device according to claim 2, characterized in that: The lifting drive device is a cylinder or a ball screw.

4. The track-type mobile bolt tightening device according to claim 2, characterized in that: A rotating shaft extending along the Z direction is disposed on one end of the mounting arm away from the base, and the rotating sleeve is fixedly connected to the rotating shaft so that the rotating sleeve rotates around the Z axis along with the rotating shaft.

5. The track-type movable bolt tightening device according to claim 4, characterized in that: The mounting arm is provided with a rotating motor, and the rotating motor is connected to the rotating shaft.

6. The track-type moving bolt tightening device according to claim 5, characterized in that: A plurality of rollers are arranged at the bottom of the base.

7. The track-type moving bolt tightening device according to claim 6, characterized in that: A roller motor is arranged on the base, and the roller motor is configured to drive a plurality of rollers to roll.

8. The track-type movable bolt tightening device according to claim 1, characterized in that: A pin hole is arranged on one end of the mounting arm connected to the base.

9. The track-type movable bolt tightening device according to claim 1, characterized in that: One end of the mounting arm connected to the base is provided with a magnet or is formed as a magnet.

10. The track-type movable bolt tightening device according to claim 7, characterized in that: The lifting drive device, the rotating motor and the roller motor are all connected to a control device.

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