Transfer trolley overhauling device

Abstract

The utility model provides an overhauling device for a transfer trolley. The overhauling device comprises a frame; the at least two wheel assemblies are fixedly connected with the first side surface of the frame; the at least two wheel assemblies are fixedly connected with the second side surface of the frame; the at least one hook is fixedly connected with the first end part of the frame; the at least two hooks are fixedly connected with the second end part of the frame; and the hanging basket is fixedly connected with the bottom of the frame and is provided with an accommodating space. According to the scheme, the efficiency, the convenience and the safety of overhauling of the assembly transfer trolley equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the field of spent fuel equipment maintenance, in particular to a transport trolley maintenance device. Background Art

[0002] The component transfer trolley is an important equipment in the component transfer process of the spent fuel (irradiated nuclear fuel) reprocessing plant. It is used for the transfer of spent fuel (irradiated nuclear fuel) components. The transfer system is mainly composed of guide rails, trolleys, upper and lower limit devices, wire ropes, winch systems, etc. The trolleys, guide rails and other structures are installed in the waterway (the waterway is about 35 meters long and more than 1 meter wide) and work underwater. Common fault forms of component transfer trolleys include wheel wear, bearing jamming, positioning pin deformation, etc. Other faults of the transfer system include guide rail deformation, wire rope pulley deformation, limit block deformation, etc. When the transfer trolley fails and needs to be inspected and repaired, it can only be drained through the waterway, scaffolding is set up, and then the maintenance personnel go down to the waterway to inspect and repair the vulnerable parts of the component transfer trolley (such as wire ropes, reversing wheels, etc.). The above process is cumbersome, labor-intensive, low work efficiency, and high safety risks. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a transport trolley maintenance device, which can improve the efficiency, convenience and safety of the maintenance of component transport trolley equipment.

[0004] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0005] A transport trolley maintenance device, comprising:

[0006] Frame;

[0007] at least two wheel assemblies fixedly connected to the first side surface of the frame;

[0008] at least two wheel assemblies fixedly connected to the second side surface of the frame;

[0009] at least one hook fixedly connected to the first end of the frame;

[0010] at least two hooks fixedly connected to the second end of the frame;

[0011] A hanging basket is fixedly connected to the bottom of the frame and has a accommodating space.

[0012] Optionally, the transfer trolley maintenance device also includes: a locking device fixedly connected to the first side or the second side of the frame.

[0013] Optionally, the transfer vehicle maintenance device also includes: a tool box fixedly connected to the first end of the frame.

[0014] Optionally, the transfer trolley maintenance device also includes: a crossbeam fixedly connected to the end of the hanging basket.

[0015] Optionally, the wheel assembly includes: an axle; a rim slidably connected to the first end of the axle; a pressure cap fixedly connected to the rim; a nut fixedly connected to the second end of the axle; and a double-stacked self-locking washer located between the nut and the axle.

[0016] Optionally, the locking device includes: a support frame; a screw threadedly connected to the support frame; and a handwheel fixedly connected to the screw.

[0017] Optionally, the thickness of the frame increases gradually and evenly from the first end to the second end.

[0018] Optionally, a groove is provided in the top middle portion of the frame.

[0019] Optionally, the hook is in the shape of a ring with a notch.

[0020] Optionally, a grid-shaped fence is arranged around the hanging basket.

[0021] The above scheme of the utility model provides a transport trolley maintenance device, comprising: a frame; at least two wheel assemblies fixedly connected to the first side of the frame; at least two wheel assemblies fixedly connected to the second side of the frame; at least one hook fixedly connected to the first end of the frame; at least two hooks fixedly connected to the second end of the frame; and a hanging basket fixedly connected to the bottom of the frame and having a storage space. Thus, the efficiency, convenience and safety of the maintenance of the component transport trolley equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the transfer trolley maintenance device of the utility model;

[0023] Figure 2 It is a side rear view schematic diagram of the transfer vehicle maintenance device of the utility model;

[0024] Figure 3 It is a schematic diagram of the wheel assembly of the transfer trolley maintenance device of the utility model;

[0025] Figure 4 It is a schematic diagram of the locking device of the transport trolley maintenance device of the utility model;

[0026] Figure 5 It is a schematic diagram of a tool box of the transfer vehicle maintenance device of the utility model;

[0027] Figure 6It is a schematic diagram of a hanging basket of a transport trolley maintenance device of the utility model;

[0028] Figure 7 The utility model is a schematic diagram of the on-track operation of the transfer vehicle maintenance device.

[0029] Description of reference numerals:

[0030] 1-basket; 2-crossbeam; 3-track; 4-toolbox; 5-hook; 6-locking device; 61-support frame; 62-screw; 63-handwheel; 7-wheel assembly; 71-axle; 72-wheel rim; 73-pressure cover; 74-nut; 75-double-stacked self-locking washer; 8-frame. DETAILED DESCRIPTION

[0031] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0032] like Figure 1 , Figure 2 As shown, the embodiment of the utility model provides a transport vehicle maintenance device, comprising:

[0033] Frame 8;

[0034] At least two wheel assemblies 7 fixedly connected to the first side surface of the frame 8;

[0035] At least two wheel assemblies 7 fixedly connected to the second side surface of the frame 8;

[0036] at least one hook 5 fixedly connected to the first end of the frame 8;

[0037] At least two hooks 5 fixedly connected to the second end of the frame 8;

[0038] A hanging basket 1 having a storage space is fixedly connected to the bottom of the frame 8 .

[0039] In this embodiment, Figure 1 , Figure 2As shown, the frame 8 is used to install the wheel assembly and connect the hanging basket and the hook. At least two wheel assemblies 7 are installed on the left and right sides of the frame 8. The bottom of the frame 8 is connected to the hanging basket 1 by welding. A hook 5 is welded at the front end of the frame 8, and two hooks 5 are welded at the rear end for hoisting the entire maintenance device and connecting it to the transfer trolley or the rope climbing machine; the wheel assembly 7 is used for the component transfer trolley maintenance device to walk on the guide rails on both sides; the hanging basket 1 is welded to the lower part of the frame 8, which is used as the activity space for the operating personnel during maintenance to protect the operating personnel; the hook 5 is used to lift the load-bearing parts of the maintenance device and is installed at the front and rear positions of the frame 8. Since the center of gravity of the maintenance device is at the rear position of the frame center, a hook 5 is installed at the front end of the frame 8, and two hooks 5 are installed at the rear end; the transfer trolley maintenance device of this embodiment can quickly and conveniently transport maintenance personnel and tools to the maintenance position when the component transfer trolley needs to be maintained, thereby improving the efficiency and safety of the component transfer trolley maintenance.

[0040] like Figure 1 , Figure 4 As shown, in an optional embodiment of the present utility model, the transfer vehicle maintenance device further includes: a locking device 6 fixedly connected to the first side or the second side of the frame 8.

[0041] In this embodiment, Figure 1 , Figure 4 As shown, the locking device 6 is used to temporarily lock the transfer trolley maintenance device at a maintenance station when a component transfer trolley fails and the transfer trolley maintenance device is towed by a rope climbing machine. The locking device 6 can fix the transfer trolley maintenance device to the track 3.

[0042] like Figure 1 , Figure 5 As shown, in an optional embodiment of the present utility model, the transfer vehicle maintenance device further includes: a tool box 4 fixedly connected to the first end of the frame 8.

[0043] In this embodiment, Figure 1 , Figure 5 As shown, the tool box 4 is fixed to the top of the frame 8 and has a storage space for storing tools and parts required for maintenance work.

[0044] like Figure 1 , Figure 2 As shown, in an optional embodiment of the utility model, the transfer trolley maintenance device also includes: a crossbeam 2 fixedly connected to the end of the hanging basket 1.

[0045] In this embodiment, Figure 1 , Figure 2 As shown, the crossbeam 2 is located in the middle of the side of the hanging basket 1, which can provide convenience for maintenance personnel to enter and exit the hanging basket 1.

[0046] like Figure 3 As shown, in an optional embodiment of the utility model, the wheel assembly 7 includes:

[0047] Axle 71;

[0048] A wheel rim 72 slidably connected to the first end of the wheel axle 71;

[0049] A gland 73 fixedly connected to the wheel rim 72;

[0050] A nut 74 fixedly connected to the second end of the wheel shaft 71;

[0051] A double stacked self-locking washer 75 is located between the nut 74 and the axle 71 .

[0052] In this embodiment, Figure 3 As shown, the wheel assembly 7 is used for the transport trolley maintenance device to travel on the guide rails 3 on both sides, and includes a wheel axle 71, a wheel rim 72, a pressure cover 73, a nut 74, and a double-stacked self-locking washer 75. The wheel axle 71 of the wheel assembly 7 is installed in cooperation with the hole of the frame 8, and is limited by the double-stacked self-locking washers 75 and the nuts 74. The wheel assembly 7 adopts the double-stacked self-locking washers 75 to prevent loosening, and has good stability and strong resistance to loosening.

[0053] like Figure 3 As shown, in an optional embodiment of the utility model, the locking device 6 includes:

[0054] Support frame 61;

[0055] A lead screw 62 threadedly connected to the support frame 61;

[0056] A hand wheel 63 is fixedly connected to the lead screw 62 .

[0057] In this embodiment, Figure 4 As shown, the locking device 6 includes a support frame 61, a screw 62, and a handwheel 63. After the transfer trolley maintenance device arrives at the predetermined location, the maintenance personnel rotate the handwheel 63, and the handwheel 63 drives the screw 62 to rotate. Under the support of the support frame 61, the screw 62 continues to move downward until it is locked with the track 3, thereby fixing the transfer trolley maintenance device on the track 3. After completing the maintenance work, the maintenance personnel rotate the handwheel 63 in the opposite direction to separate the screw 62 from the track 3, thereby unlocking the transfer trolley maintenance device to move.

[0058] In an optional embodiment of the present invention, the thickness of the frame 8 increases gradually and evenly from the first end to the second end.

[0059] In this embodiment, the thickness of the second end of the frame 8 is greater than that of the first end, so that the center of the frame 8 is inclined at a certain angle. Since the track 3 has a certain slope, this arrangement can keep the top of the frame 8 in a horizontal state.

[0060] In an optional embodiment of the present invention, a groove is provided in the top middle portion of the frame 8 .

[0061] In this embodiment, a groove with an accommodating space is provided in the middle part of the top of the frame 8, which can reduce the weight of the frame 8 and can also serve as an expansion and backup of the tool box 4, and can store tools and parts required for maintenance work when needed.

[0062] In an optional embodiment of the present invention, the hook 5 is in the shape of a ring with a notch.

[0063] In this embodiment, the notch of the hook 5 can facilitate the connection of the rope during hoisting or towing.

[0064] like Figure 6 As shown, in an optional embodiment of the utility model, a grid-shaped fence is arranged around the hanging basket 1.

[0065] In this embodiment, Figure 6 As shown, the lower fence of the hanging basket 1 is designed in the form of a grid, which can prevent items from falling out while reducing its overall weight, increasing the safety of hoisting, and reducing the pressure on the guide rail.

[0066] The utility model can not only inspect and repair the component transfer trolley, but also the pulley block, track, wire rope, limit block and other parts, and has a wide range of applications; common fault forms of component transfer trolleys include wheel wear, bearing jamming, and positioning pin deformation, and common faults of the transfer system include guide rail deformation, wire rope pulley deformation, and limit block deformation. When using, if Figure 7 As shown, first, the transfer trolley maintenance device is hoisted onto the track. In order to ensure that the transfer trolley maintenance device maintains balance during the hoisting process, a three-point hoisting method is adopted, with one hoisting point set at the front end of the transfer trolley maintenance device and two hoisting points set at the rear end. Each hoisting point uses a sling. In order to fine-tune the lifting of the device during the hoisting process, an electric hoist is hung under the crane hook, and then the sling is hung on the lower part of the electric hoist.

[0067] When the component transfer trolley is able to start, drive the component transfer trolley to a high position, use a crane to lift the maintenance device to the high position at the front of the transfer trolley close to the transfer trolley, and when the maintenance device is about to land on the track, the remote-controlled electric hoist will slowly and steadily lower the maintenance device onto the track. The maintenance personnel will go down to the maintenance device basket along the safety rope ladder that has been placed in advance, and use a rope to connect the maintenance device to the component transfer trolley. Gradually drive the component transfer trolley to a low position. Since the track is inclined at 6.28°, the maintenance device moves to a low position with the component transfer trolley under its own gravity. Since the entire track is spliced ​​in multiple sections, there are protrusions at the joints. The maintenance device can cross the protrusions under the action of the component transfer trolley and the rope to reach the maintenance position;

[0068] When the component transfer trolley fails, use a rope climbing machine to control the maintenance device to move forward or backward. Hang the rope climbing machine in the single hook direction of the maintenance device. The maintenance device moves upward under the pulling force of the rope climbing machine and passes over the protrusion at the connection. When it is necessary to stop for maintenance, turn off the rope climbing machine and manually rotate the handwheel of the locking device to fix the maintenance device to the maintenance station. The maintenance device can be stopped or started at any time according to maintenance needs during the entire operation process. After completing the maintenance work, the maintenance tooling will be towed to a high position and lifted out by a crane.

[0069] The transfer trolley maintenance device in the above scheme can greatly improve the maintenance efficiency and reduce the preparation work for setting up scaffolding and draining the pool before maintenance. Before maintenance without using the maintenance device, the pool water needs to be drained to facilitate the setting up of scaffolding. After using this maintenance device, it is only necessary to drain the water to the transfer trolley when it is in a low position above the water surface, making maintenance more convenient and efficient.

[0070] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A transport vehicle maintenance device, characterized in that: include: Frame (8); At least two wheel assemblies (7) fixedly connected to the first side surface of the frame (8); At least two wheel assemblies (7) fixedly connected to the second side surface of the frame (8); at least one hook (5) fixedly connected to the first end of the frame (8); At least two hooks (5) fixedly connected to the second end of the frame (8); A hanging basket (1) is fixedly connected to the bottom of the vehicle frame (8) and has a accommodating space.

2. The transport vehicle maintenance device according to claim 1 is characterized in that: Also includes: A locking device (6) fixedly connected to the first side surface or the second side surface of the vehicle frame (8).

3. The transport vehicle maintenance device according to claim 1 is characterized in that: Also includes: A tool box (4) is fixedly connected to the first end of the vehicle frame (8).

4. The transport vehicle maintenance device according to claim 1, characterized in that: Also includes: A crossbeam (2) fixedly connected to the end of the hanging basket (1).

5. The transport vehicle maintenance device according to claim 1, characterized in that: The wheel assembly (7) comprises: Axle (71); A wheel rim (72) slidably connected to the first end of the wheel axle (71); A gland (73) fixedly connected to the wheel rim (72); a nut (74) fixedly connected to the second end of the wheel shaft (71); A double stacked self-locking washer (75) is located between the nut (74) and the axle (71).

6. The transport vehicle maintenance device according to claim 2, characterized in that: The locking device (6) comprises: Support frame (61); A lead screw (62) threadedly connected to the support frame (61); A hand wheel (63) is fixedly connected to the lead screw (62).

7. The transport vehicle maintenance device according to claim 1, characterized in that: The thickness of the frame (8) increases uniformly from the first end to the second end.

8. The transport vehicle maintenance device according to claim 1, characterized in that: A groove is provided in the top middle portion of the frame (8).

9. The transport vehicle maintenance device according to claim 1, characterized in that: The hook (5) is in the shape of a ring with a notch.

10. The transport vehicle maintenance device according to claim 1, characterized in that: A grid-shaped fence is arranged around the hanging basket (1).

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