Efficient compact trolley with shielding function for crane

Abstract

The invention provides an efficient compact trolley with a shielding function for a crane. The efficient compact trolley comprises a hoisting mechanism, a trolley running mechanism, an upper shielding door mechanism, a lower shielding door mechanism, an upper and lower shielding door quick clutch device, a shielding cylinder, a shielding cylinder jacking mechanism and a trolley frame, a gear motor and the like of the hoisting mechanism are arranged outside a shielding cylinder, a fixed pulley block is arranged at the top, an electric lifting appliance is arranged inside, and double-steel-wire-rope winding design is unique; the upper shielding door mechanism and the lower shielding door mechanism are each composed of a frame, a door body, a motor and the like and are in a special bidirectional opening and closing mode. The upper and lower shielding door quick clutch devices are linked through an electric push rod and a spin lock insert key; and the shielding cylinder is fixed on a spiral elevator of the jacking mechanism. The trolley optimizes a storage tank loading and unloading operation method, improves efficiency, reduces vertical shaft opening time and radiation dose, combines the storage tank and a shielding plug lifting mechanism, is more compact in structure, is suitable for loading, unloading and transferring spent fuel of a nuclear power station and the like, and improves safety and environmental protection performance of equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a highly efficient and compact trolley for cranes with a shielding function. Background Art

[0002] The spent fuel tank loading and unloading device of a nuclear power plant is used to load and unload spent fuel tanks. The spent fuel tanks unloaded from the containers are transferred to the corresponding storage wells of the temporary storage warehouse for storage. The main operation objects are the tanks and shaft shielding plugs. The tank loading and unloading device is required to have a shielding function.

[0003] In the prior art, the tank loading and unloading device includes a tank lifting mechanism, a shielding plug lifting mechanism, a split movable bottom plate, and a shielding cylinder. Each time a tank is loaded and unloaded, the shielding plug must be lifted, placed in a designated position, the movable bottom plate must be lifted and opened, the tank must be lifted, the movable bottom plate must be closed, the shielding plug must be lifted from a designated position, and the shielding plug must be lowered and installed in the shaft. The shielding plug must be lowered and installed in the shaft when it is lowered and installed. This requires precise positioning, which takes a lot of time. During the entire tank loading and unloading process, the shaft is open for a long time, and the radiation dose to the environment is high. Summary of the invention

[0004] In view of the technical problem that the shielding plug is lowered and installed in place, which takes a long time, the shaft is open for a long time, and the radiation dose to the environment is large, a high-efficiency compact trolley with shielding function for crane is provided. The present invention optimizes the operation method of tank loading and unloading, saves the number of times the shielding plug is lowered and installed in the shaft, improves work efficiency, reduces the shaft open time by half, reduces the radiation dose to the environment in the shaft, reduces environmental pollution, and improves the safety of the equipment.

[0005] The technical means adopted by the present invention are as follows:

[0006] A high-efficiency compact trolley for a crane with a shielding function, comprising: a lifting mechanism, a trolley running mechanism, an upper shielding door mechanism, a lower shielding door mechanism, an upper and lower shielding door quick clutch device, a shielding cylinder, a shielding cylinder lifting mechanism, and a trolley frame;

[0007] The lifting mechanism is used to complete the lifting of the storage tank and the shielding plug, including two reduction motors, two sets of wire ropes, two sets of drum groups, fixed pulley groups and electric lifting equipment, and the load is balanced through the double wire rope winding system;

[0008] The trolley running mechanism includes a reduction motor, an active trolley group, a passive trolley group and a horizontal wheel, which is used to realize the running of the trolley on the crane track;

[0009] The upper shielding door mechanism comprises an upper shielding door frame, an upper shielding door, a motor and a screw elevator, and the upper shielding door is driven by the screw elevator to open and close in both directions;

[0010] The lower shield door mechanism includes a lower shield door frame, a lower shield door, a motor, a screw elevator, a cross-type plug-in coupling and a first converter, and realizes bidirectional opening and closing of the lower shield door;

[0011] The upper and lower shielding door quick clutch device includes an electric push rod and a rotary lock key, which is used for the quick clutch operation of the upper and lower shielding doors;

[0012] Shielding cylinder, used to shield the storage tank and shielding plug;

[0013] The shielding tube lifting mechanism drives the screw lifter driven by the motor to realize the lifting and lowering of the shielding tube;

[0014] The small vehicle frame carries all the above components.

[0015] Furthermore, one end of each set of steel wire ropes is fixed on one drum, and the other end is fixed on another drum. When any one steel wire rope of the double steel wire rope winding system breaks, the other steel wire rope can maintain the load.

[0016] Furthermore, the upper and lower shielding door quick clutch device drives the rotary lock key to rotate 90 degrees through the electric push rod, thereby realizing the quick connection and separation of the upper shielding door frame and the lower shielding door frame.

[0017] Furthermore, the shielding tube lifting mechanism comprises an electric motor, a transmission shaft and a second converter, and converts the rotational motion into the linear lifting motion of the shielding tube through a spiral lift.

[0018] Furthermore, the upper shielding door and the lower shielding door are both driven by a spiral lifter and driven by an electric motor to realize opening and closing of the shielding door.

[0019] Furthermore, the horizontal wheels of the trolley running mechanism are installed on one side of the trolley frame, and the horizontal wheels roll along both sides of the track to ensure the running accuracy of the trolley.

[0020] Due to the adoption of the above technical solution, compared with the prior art, the present invention has the following advantages:

[0021] 1. The present invention provides a high-efficiency and compact trolley with shielding function for cranes. By optimizing the tank loading and unloading operation method, the number of times the shielding plug is lowered and installed in the shaft is saved. Each tank loading and unloading operation is faster and more efficient, which reduces the overall operation time and thus improves work efficiency.

[0022] 2. The present invention provides a high-efficiency and compact trolley with shielding function for cranes. The optimized operation method reduces the shaft opening time by half, effectively reduces the radiation dose to the environment in the shaft, reduces environmental pollution, and also improves the safety of the equipment, ensuring the safety of operators and the surrounding environment.

[0023] 3. The present invention provides a high-efficiency and compact trolley for a crane with a shielding function, which combines the storage tank lifting mechanism and the shielding plug lifting mechanism into one lifting mechanism, thereby reducing the number of components and space occupancy, making the overall structure of the trolley more compact, facilitating operation under various working conditions, and improving the applicability and stability of the equipment.

[0024] Based on the above reasons, the present invention can be promoted in the field of crane technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a schematic diagram of the structure of a highly efficient and compact trolley for a crane with a shielding function according to the present invention;

[0027] Figure 2 It is a structural schematic diagram of a highly efficient and compact trolley hoisting mechanism for a crane with a shielding function as described in the present invention;

[0028] Figure 3 It is a structural schematic diagram of a highly efficient and compact trolley operating mechanism for a crane with a shielding function according to the present invention;

[0029] Figure 4 This is a front view of a highly efficient and compact trolley shielding door mechanism for a crane with shielding function according to the present invention;

[0030] Figure 5 It is a side view of a highly efficient and compact trolley shielding door mechanism for a crane with shielding function according to the present invention;

[0031] Figure 6 This is a front view of a highly efficient and compact trolley under-shielding door mechanism for a crane with shielding function as described in the present invention;

[0032] Figure 7 It is a side view of a highly efficient and compact trolley under-shielding mechanism for a crane with a shielding function according to the present invention;

[0033] Figure 8 It is a side view of the structure of a high-efficiency and compact trolley upper and lower shielding door quick clutch device for a crane with shielding function according to the present invention;

[0034] Fig. 9 It is a top view of the structure of a high-efficiency and compact trolley upper and lower shielding door quick clutch device for a crane with shielding function according to the present invention;

[0035] Fig.10 It is a structural schematic diagram of a high-efficiency and compact trolley shielding tube lifting mechanism for a crane with a shielding function as described in the present invention.

[0036] In the figure: 1, lifting mechanism; 2, trolley running mechanism; 3, upper shielding door mechanism; 4, lower shielding door mechanism; 5, upper and lower shielding door quick clutch device; 6, shielding tube; 7, shielding tube lifting mechanism; 8 trolley frame; 11, reduction motor; 12, wire rope; 13, drum group; 14, fixed pulley group; 15, electric hoist; 16, cable drum; 21, reduction motor; 22, active trolley group; 23, passive trolley group; 24, horizontal wheel; 31, upper shielding door frame; 32, upper shielding door; 33, first motor; 34, first spiral elevator; 41, lower shielding door frame; 42, lower shielding door; 43, second motor; 44, second spiral elevator; 45, cross-type plug-in coupling; 46, first converter; 51, electric push rod; 52, rotary lock key; 71, third motor; 72, transmission shaft; 73, second converter; 74, third spiral elevator. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0042] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0043] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0044] like Figures 1 to 10 As shown, the present invention provides a high-efficiency compact trolley for a crane with a shielding function, comprising: a lifting mechanism 1, a trolley running mechanism 2, an upper shielding door mechanism 3, a lower shielding door mechanism 4, an upper and lower shielding door quick clutch device 5, a shielding cylinder 6, a shielding cylinder lifting mechanism 7, and a trolley frame 8;

[0045] The lifting mechanism 1 is composed of two reduction motors 11, two sets of steel wire ropes 12, two sets of drum groups 13, fixed pulley groups 14, electric hoist 15, and cable drum 16. The reduction motor 11, drum group 13, and cable drum 16 are installed on the outer side wall of the shielding cylinder 6, the fixed pulley group 14 is installed on the top of the shielding cylinder 6, and the electric hoist 15 is installed inside the shielding cylinder 6; one end of each set of steel wire ropes 12 is fixed on a drum, and the other end is fixed on another drum. The upper part of the electric hoist 15 adopts four pulley groups, and the ropes are arranged diagonally, and the double steel wire ropes 12 are wound;

[0046] The trolley running mechanism 2 is composed of a reduction motor 21, an active trolley group 22, a passive trolley group 23, and a horizontal wheel 24. The reduction motor 21, the active trolley group 22, the passive trolley group 23, and the horizontal wheel 24 are installed on the trolley frame 8;

[0047] The upper shielding door mechanism 3 is composed of an upper shielding door frame 31, an upper shielding door 32, a first motor 33, and a first spiral elevator 34. The upper shielding door frame 31 is fixed on the shielding cylinder 6, the upper shielding door 32 is installed in the sliding groove of the upper shielding door frame 31, the first motor 33 and the first spiral elevator 34 are fixed on the upper shielding door frame 31, and the upper shielding door 32 adopts bidirectional opening and closing, which is realized by the first motor 33 driving the first spiral elevator 34;

[0048] The lower shielding door mechanism 4 is composed of a lower shielding door frame 41, a lower shielding door 42, a second motor 43, a second screw elevator 44, a cross-type plug-in coupling 45, and a first converter 46. The lower shielding door 42 is installed in the sliding groove of the lower shielding door 42. The second motor 43 and a half of the cross-type plug-in coupling 45 are fixed to the upper shielding door 32, and the other half of the cross-type plug-in coupling 45, the first converter 46, and the second screw elevator 44 are fixed to the lower shielding door frame 41. The lower shielding door 42 adopts bidirectional opening and closing, which is realized by the second motor 43 driving the second screw elevator 44 through the cross-type plug-in coupling 45 and the first converter 46;

[0049] The upper and lower shielding door quick clutch device 5 is composed of an electric push rod 51 and a rotary lock key 52. ​​The electric push rod 51 and the rotary lock key 52 are fixed on the upper shielding door frame 31. The lower shielding door frame 41 is provided with a locking key slot and is connected to the upper shielding door frame 31 through the rotary lock key 52.

[0050] The shielding cylinder 6 is fixed on the screw elevator and is used to shield the storage tank and the shielding plug, and cooperate to complete the safe lifting of the storage tank, etc.

[0051] The shielding tube lifting mechanism 7 is composed of a third motor 71, a transmission shaft 72, a second converter 73, and a third spiral elevator 74, all of which are fixed on the trolley frame 8. The third motor 71 drives the third spiral elevator 74 through the transmission shaft 72 and the second converter 73 to convert the rotational motion into linear motion, thereby realizing the lifting and lowering of the shielding tube 6.

[0052] Furthermore, the design of the double steel wire rope 12 winding system in the lifting mechanism 1 ensures that the two steel wire ropes 12 can distribute the load evenly, and when one of the steel wire ropes is damaged, the other can hold the load and maintain the balance of the storage tank and the shielding plug.

[0053] Furthermore, the upper and lower shielding door quick clutch device 5 drives the rotary lock key 52 to rotate 90 degrees through the electric push rod 51, so as to realize the quick connection and separation of the upper shielding door frame 31 and the lower shielding door frame 41.

[0054] Furthermore, the upper shielding door 32 and the lower shielding door 42 are both driven by a spiral elevator. When the upper shielding door frame 31 and the lower shielding door frame 41 are aligned and positioned by the sensor, the shielding tube 6 descends, causing the rotary lock pin to fall into the rotary lock groove, and then the electric push rod 51 drives the rotary lock key 52 to rotate 90°, so that the upper shielding door frame 31 and the lower shielding door frame 41 are connected as a whole, thereby realizing the linkage of the upper and lower shielding doors 42.

[0055] Furthermore, the horizontal wheel 24 of the trolley running mechanism 2 is installed on one side of the trolley frame 8, and the horizontal wheel rolls along both sides of the track to ensure the running accuracy of the trolley.

[0056] Further, the upper shielding door 32 and the lower shielding door 42 are opened, the shielding plug is lifted, the shielding plug is placed in the designated position, the storage tank is lifted, the upper shielding door 32 and the lower shielding door 42 are closed, the lower shielding door 42 quickly detaches from the trolley, and the shielding cylinder 6 rises together with the upper shielding door 32, keeping a safe distance from the lower shielding door 42, and the lower shielding door 42 is used to shield the radiation at the shaft mouth; when loading and unloading the storage tank next time, the shielding cylinder 6 descends together with the upper shielding door 32, completing the quick connection operation of the upper shielding door 32 and the lower shielding door 42, and the loading and unloading of the storage tank can be repeated according to the process.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A highly efficient and compact trolley for a crane with shielding function, characterized in that: include: Lifting mechanism, trolley running mechanism, upper shielding door mechanism, lower shielding door mechanism, upper and lower shielding door quick clutch device, shielding cylinder, shielding cylinder lifting mechanism, trolley frame; The lifting mechanism is used to complete the lifting of the storage tank and the shielding plug, including two reduction motors, two sets of wire ropes, two sets of drum groups, fixed pulley groups and electric lifting equipment, and the load is balanced through the double wire rope winding system; The trolley running mechanism includes a reduction motor, an active trolley group, a passive trolley group and a horizontal wheel, which is used to realize the running of the trolley on the crane track; The upper shielding door mechanism comprises an upper shielding door frame, an upper shielding door, a first motor and a first spiral elevator, and the upper shielding door is driven by the spiral elevator to open and close in both directions; The lower shield door mechanism includes a lower shield door frame, a lower shield door, a second motor, a second screw elevator, a cross-type plug-in coupling and a first converter, and realizes bidirectional opening and closing of the lower shield door; The upper and lower shielding door quick clutch device includes an electric push rod and a rotary lock key, which is used for the quick clutch operation of the upper and lower shielding doors; Shielding cylinder, used to shield the storage tank and shielding plug; The shielding tube lifting mechanism drives the third spiral lifter through the third motor to realize the lifting and lowering of the shielding tube; The small vehicle frame carries all the above components.

2. The efficient and compact crane trolley with shielding function according to claim 1 is characterized in that: One end of each set of steel wire ropes is fixed on a drum, and the other end is fixed on another drum. When any one of the steel wire ropes of the double steel wire rope winding system breaks, the other steel wire rope can maintain the load.

3. The efficient and compact crane trolley with shielding function according to claim 1, characterized in that: The upper and lower shielding door quick clutch device drives the rotary lock key to rotate 90 degrees through the electric push rod, so as to realize the quick connection and separation of the upper shielding door frame and the lower shielding door frame.

4. The efficient and compact crane trolley with shielding function according to claim 1, characterized in that: The shielding tube lifting mechanism comprises a third motor, a transmission shaft and a second converter, and converts the rotary motion into the linear lifting motion of the shielding tube through a screw lift.

5. The efficient and compact crane trolley with shielding function according to claim 1, characterized in that: The upper shielding door and the lower shielding door are both driven by a spiral lifter and driven by an electric motor to realize the opening and closing of the shielding door.

6. The efficient and compact crane trolley with shielding function according to claim 1, characterized in that: The horizontal wheels of the trolley running mechanism are installed on one side of the trolley frame, and the horizontal wheels roll along both sides of the track to ensure the running accuracy of the trolley.

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