A long pole device for remote operation and method of use

Abstract

The application discloses a long rod device for remote operation and a use method, relates to the technical field of nuclear facility decommissioning, and comprises a clamp mechanism for clamping a target object, a push rod mechanism capable of realizing opening and clamping of the clamp mechanism, a locking mechanism capable of locking the position of the push rod, and a control mechanism capable of remotely controlling the push rod mechanism and the locking mechanism. The long rod tool provided by the application can be used in a radioactive environment, and through remote clamping operation, the radiation dose of an operator can be effectively reduced. The device can keep the clamp automatically locked at any opening degree, and the safety and stability of clamping are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear facility decommissioning, in particular to a long rod device for remote operation and a use method thereof. BACKGROUND

[0002] In the nuclear facility decommissioning work, for the area with high radiation, it is often necessary to remove the hot items with high radioactivity to reduce the environmental dose rate, in addition, the equipment for nuclear facility decommissioning is often contaminated by radionuclides. At present, when the equipment fails, the staff usually needs to contact the equipment closely for maintenance, which is dangerous for the staff. Therefore, it is urgent to provide a long rod tool for remote operation to realize remote operation, so as to reduce the exposure dose of the decommissioning personnel and equipment maintenance personnel, and ensure that the staff is in a safe working environment. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art, and provides a long rod device for remote operation and a use method thereof, which can effectively avoid the irradiation of the maintenance personnel.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] A long rod device for remote operation, comprising a clamp mechanism for clamping a target object, a push rod mechanism capable of opening and clamping the clamp mechanism, a locking mechanism capable of locking the position of the push rod, and a control mechanism capable of remotely controlling the push rod mechanism and the locking mechanism;

[0006] Further, the clamp mechanism comprises a clamp shell, a clamping jaw, a drive rod, a connecting rod, a clamping jaw plate, a support, a compression spring, a tension spring joint, and a first tension spring. The clamping jaw plate is arranged inside the clamp shell. The drive rod is arranged in two, and forms a jaw at the front end of the clamping jaw plate. The drive rod is a bent shape with one inflection point, one end of which is hinged to the support, the other end is hinged to the clamping jaw, and the inflection point is hinged to the clamping jaw plate. A connecting rod is further arranged between the clamping jaw and the clamping jaw plate. The end of the support is connected with the compression spring, one end of the compression spring not connected with the support is connected with the tension spring joint, and the end of the tension spring joint is connected with the first tension spring.

[0007] Further, a manual clamp seat is connected to one end of the clamping jaw plate where the clamping jaw is not arranged, and the tension spring joint is located inside the manual clamp seat.

[0008] Further, the push rod mechanism comprises a locking pull rod connected with the first tension spring, and a hollow locking base is mounted on the outside of the locking pull rod; a clamping holder is connected with the flange at the end of the hand-held clamp not connected with the clamping jaw plate, and the locking base is connected with the flange of the clamping holder; the control mechanism comprises a long rod and a clamp tensioning steel wire penetrating through the long rod, and a steel wire fastening buckle is arranged at the end of the locking pull rod, and the clamp tensioning steel wire is connected with the steel wire fastening buckle.

[0009] Further, the locking mechanism comprises a clamping groove opened in the inner surface of the locking base, a ratchet shaft mounted on the locking pull rod, a ratchet mounted on the ratchet shaft and capable of being pressed into the clamping groove, and a second tension spring with one end fixed on the locking pull rod and the other end connected with the ratchet; the control mechanism further comprises a clamp loosening steel wire connected with the ratchet; and the second tension spring is connected with the clamp loosening steel wire on the two sides of the ratchet.

[0010] Further, the clamp loosening steel wire is located outside the long rod, a pulling support is arranged on the flange between the clamping holder and the locking base, and the clamp loosening steel wire enters the locking base through the pulling support and is connected with the ratchet.

[0011] The use method of the long rod device for remote operation as described above comprises the following steps.

[0012] S1: the clamp loosening steel wire is pulled tight, the ratchet rotates around the ratchet shaft, and the ratchet is separated from the clamping groove surface in the inner surface of the locking base;

[0013] S2: the clamp tensioning steel wire is released, the locking pull rod moves to the clamping jaw end under the pushing action of the compression spring, the support moves to the clamping jaw end under the pushing action of the compression spring, and the clamping jaw is expanded;

[0014] S3: the clamp tensioning steel wire is pulled tight, the clamp loosening steel wire is released after the inner side of the clamping jaw is tightly attached to the target object, the ratchet is pressed into the clamping groove in the inner surface of the locking base under the action of the second tension spring, the locking pull rod is locked by the ratchet, the clamping jaw opening is locked, the current opening degree is maintained, and the target object is transferred to the corresponding position;

[0015] S4: the clamp loosening steel wire is pulled tight, and then the clamp tensioning steel wire is released, the clamping jaw is opened, and the transfer of the target object is completed.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] (1) The long rod tool provided by the present application can be used in a radioactive environment, and the radiation dose of the operator can be effectively reduced through remote clamping operation.

[0018] (2) The long rod tool provided by the present application can keep the clamp automatically locked at any opening degree, thereby ensuring the safety and stability of clamping. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 The overall structural diagram of the long rod device provided by the present invention;

[0020] Fig. 2 A partial structural diagram of the long rod device clamping mechanism provided by the present invention;

[0021] Fig. 3 A partial structural diagram of the long rod device provided by the present invention;

[0022] Fig. 4 This is a partial cross-sectional view of the clamp locking mechanism in this invention.

[0023] The corresponding names of the reference numerals in the attached drawings are as follows: 1-clamping mechanism, 2-clamping retainer, 3-clamping locking mechanism, 4-long rod, 5-clamping release wire, 6-clamping tension wire, 7-jaw, 8-drive rod, 9-connecting rod, 10-jaw plate, 11-compression spring, 12-manual clamping seat, 13-tension spring connector, 14-first tension spring, 15-locking rod, 16-locking base, 17-second tension spring, 18-pawl shaft, 19-pawl, 20-support, 21-clamping housing, 22-pulling support, 23-wire fastening buckle. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0025] like Figs. 1-4 As shown, this embodiment provides a long rod device for remote operation, including a clamping mechanism 1, a clamping retainer 2, a clamping locking mechanism 3, a long rod 4, a clamping release wire 5, and a clamping tension wire 6. The long rod 4 is a hollow carbon fiber rod, and the clamping tension wire 6 is disposed inside the long rod 4. The clamping locking mechanism 3 includes a push rod mechanism that enables the clamping mechanism 1 to open and clamp, and a locking mechanism that locks the position of the push rod.

[0026] The clamp mechanism 1 comprises a clamp shell 21, a clamp jaw 7, a driving rod 8, a connecting rod 9, a clamp jaw plate 10, a support 20, a compression spring 11, a manual clamp seat 12, a tension spring joint 13, and a first tension spring 14. The clamp jaw plate 10 is arranged inside the clamp shell 21, the driving rod 8 is a curved rod with one inflection point, one end of which is hingedly arranged with the support 20, the other end is hingedly arranged with the clamp jaw 7, and the inflection point is hingedly arranged with the clamp jaw plate 10; two driving rods 8 are arranged, forming a clamp opening at the front end of the clamp jaw plate 10, and a connecting rod 9 is further arranged between the clamp jaw 7 and the clamp jaw plate 10; the driving rod 8, the clamp jaw 7 and the clamp jaw plate 10 are hingedly connected through a first pin shaft and a second pin shaft, the connecting rod 9, the clamp jaw 7 and the clamp jaw plate 10 are hingedly connected through a third pin shaft and a fourth pin shaft, and the first pin shaft, the second pin shaft, the third pin shaft and the fourth pin shaft are hingedly connected to form a parallelogram structure. The compression spring 11 is connected with the support 20, one end of the compression spring 11 not connected with the support 20 is connected with the tension spring joint 13, and the other end of the tension spring joint 13 is connected with the tension spring 14; the other end of the clamp jaw plate 10 not provided with the clamp jaw is connected with the manual clamp seat 12, and the tension spring joint 13 is located inside the manual clamp seat 12.

[0027] The clamp locking mechanism 3 comprises a hollow locking base 16 connected with the rear flange of the clamping holder 2, and a locking pull rod 15 arranged in the locking base 16. The inner surface of the locking base 16 is provided with a clamping groove, one end of the locking base 16 not connected with the clamping holder 2 is connected with the flange of the long rod 4, one end of the locking pull rod 15 is connected with the first tension spring 14, and the other end is provided with a steel wire fastening buckle 23, the clamp tensioning steel wire 6 passes through the long rod 4 and is connected with the locking pull rod 15 through the steel wire fastening buckle 23. The locking pull rod 15 is installed with a ratchet shaft 18, the ratchet shaft 18 is installed with a ratchet 19, and the two ends of the ratchet 19 can be clamped in the clamping groove on the inner side of the locking base 16, thereby realizing the fixation of the position of the locking pull rod 15. One side of the ratchet 19 is connected with the clamp loosening steel wire 5, by pulling the clamp loosening steel wire 5, the ratchet 19 rotates around the ratchet shaft 18 by a certain angle, the ratchet 19 is separated from the clamping groove on the inner side of the locking base 16, and the movement of the locking pull rod 15 can be realized. In order to better reset the ratchet 19 and fix the position of the locking pull rod 15 after the locking pull rod 15 moves to the target position, a second tension spring 17 is arranged, one end of the second tension spring 17 is fixed on the locking pull rod 15 through a bolt, and the other end is connected with the ratchet 19. The clamp loosening steel wire 5 is located outside the long rod 4, a pulling support 22 is arranged on the flange between the clamping holder 2 and the locking base 16, and the clamp loosening steel wire 5 enters the locking base 16 through the pulling support 22 and is connected with the ratchet 19.

[0028] The front end of the clamping holder 2 is connected with the flange of the manual clamp seat 12, and the locking pull rod 15 passes through the inside of the clamping holder 2 and is connected with the first tension spring 14.

[0029] The method for using the long rod device is as follows: firstly, the clamping jaw is pulled to release the steel wire 5, the pawl 19 rotates around the pawl rotating shaft 18 by a certain angle, and the pawl 19 is separated from the clamping groove surface of the inner surface of the locking base 16; then the clamping jaw is released to pull the steel wire 6, the locking pull rod 15 moves to the clamping jaw end under the pushing action of the compression spring 11, the tension spring 14 at the front end of the locking pull rod 15 is unloaded, the support 20 moves to the clamping jaw end under the pushing action of the compression spring 11, and the clamping jaw 7 is expanded. Since the clamping jaw adopts a hinged parallelogram structure, the jaw opening always remains parallel, then the target object is placed in the jaw opening, the clamping jaw is pulled to pull the steel wire 6, after the inner side of the clamping jaw 7 is tightly attached to the target object, the clamping jaw is released to release the steel wire 5, the pawl 19 rotates by a certain angle under the action of the second tension spring 17 and is pressed into the clamping groove of the inner surface of the locking base 16, the locking pull rod 15 is locked by the pawl 19, the opening of the clamping jaw 7 is locked, the current opening degree is maintained, the target object is transferred to the corresponding position, the clamping jaw is pulled to release the steel wire 5, then the clamping jaw is released to pull the steel wire 6, the clamping jaw 7 is opened, and the long rod tool is removed from the working surface, so that one clamping and transferring material is completed.

[0030] The above embodiment is only one of the preferred embodiments of the present application and should not be used to limit the protection scope of the present application. Any modification or polishing without substantial meaning made within the main design idea and spirit of the present application, and the technical problems solved are still consistent with the present application, which should be included in the protection scope of the present application.

Claims

1. A long-pole device for remote operation, characterized in that, It includes a clamping mechanism (1) for holding a target object, a push rod mechanism that enables the clamping mechanism (1) to open and clamp, a locking mechanism that locks the position of the push rod, and a control mechanism that can remotely control the push rod mechanism and the locking mechanism. The clamping mechanism (1) includes a clamping housing (21), clamping jaws (7), a drive rod (8), a connecting rod (9), a clamping jaw plate (10), a support (20), a compression spring (11), a tension spring connector (13), and a first tension spring (14); the clamping jaw plate (10) is located inside the clamping housing (21); two drive rods (8) are provided, forming a jaw at the front end of the clamping jaw plate (10); the drive rod (8) is a bent-corner shape with one inflection point, one end of which is hinged to the support (20) and the other end of which is hinged to the clamping jaw (7). And its inflection point is hinged to the gripper plate (10); a connecting rod (9) is also provided between the gripper (7) and the gripper plate (10); a compression spring (11) is connected to the end of the support (20), and a tension spring connector (13) is connected to the end of the compression spring (11) that is not connected to the support (20), and a first tension spring (14) is connected to the end of the tension spring connector (13); a manual clamp seat (12) is connected to the end of the gripper plate (10) that is not provided with grippers, and the tension spring connector (13) is located inside the manual clamp seat (12); The push rod mechanism includes a locking rod (15) connected to the first tension spring (14), and a hollow locking base (16) is installed on the outside of the locking rod (15); the end of the manual clamp seat (12) not connected to the clamping plate (10) is connected to the clamping retainer (2) through a flange, and the locking base (16) is connected to the flange of the clamping retainer (2); The locking mechanism includes a slot formed on the inner surface of the locking base (16), a pawl shaft (18) mounted on the locking lever (15), a pawl (19) mounted on the pawl shaft (18) and whose end can be pressed into the slot, and a second tension spring (17) with one end fixed to the locking lever (15) and the other end connected to the pawl (19). The control mechanism includes a long rod (4), a clamp release wire (5), and a clamp tightening wire (6) that passes through the long rod (4); the end of the locking rod (15) is provided with a wire fastening buckle (23), and the clamp tightening wire (6) is connected to the wire fastening buckle (23); the pawl (19) is connected to the clamp release wire (5); the second tension spring (17) and the clamp release wire (5) are respectively connected to both sides of the pawl (19).

2. The long rod device for remote operation according to claim 1, characterized in that, The clamp release wire (5) is located outside the long rod (4). A pull support (22) is provided on the flange between the clamping retainer (2) and the locking base (16). The clamp release wire (5) enters the locking base (16) through the pull support (22) and is connected to the pawl (19).

3. A method of using the long-pole device for remote operation as described in claim 2, characterized in that, include: S1: Tighten the clamps and loosen the steel wire (5). The pawl (19) rotates around the pawl shaft (18) and the pawl (19) disengages from the groove surface on the inner surface of the locking base (16). S2: Release the clamp to tighten the steel wire (6), the locking lever (15) moves towards the jaw end under the pushing action of the compression spring (11), the support (20) moves towards the jaw end under the pushing action of the compression spring (11), and pushes the jaw (7) to expand; S3: Tighten the clamp and tighten the steel wire (6). After the inner side of the jaw (7) is in close contact with the target, release the clamp and loosen the steel wire (5). Under the action of the second tension spring (17), the pawl (19) is pressed into the groove on the inner surface of the locking base (16). The locking rod (15) is locked by the pawl (19), and the jaw (7) is locked open. Maintain the current opening degree and transfer the target to the corresponding position. S4: Tighten the clamps and loosen the steel wire (5), then release the clamps and tighten the steel wire (6). The jaws (7) open, and the transfer of the target object can be completed.

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