Nuclear power hot cell crane with height positioning device

Abstract

The utility model relates to the technical field of cranes, and provides a nuclear power hot cell crane with a height positioning device, which comprises a travelling crane frame, guide rails arranged on the left side and the right side of the travelling crane frame, a trolley arranged between the two guide rails in a sliding manner, a winding roller arranged above the trolley, a first driver arranged at one end of the winding roller, and a second driver arranged at the other end of the winding roller, a positioning unit used in cooperation with the cable is arranged below the trolley and used for fixing the position of the cable. The positioning unit comprises a rectangular sleeve, a first guide wheel and a second guide wheel are arranged in the rectangular sleeve, a pushing unit is arranged on one side of the first guide wheel, and an extrusion part used in cooperation with the pushing unit is arranged on the first guide wheel; in the moving process of a hung object, the pushing unit moves to drive the extrusion part to make contact with the cable, the first guide wheel and the second guide wheel clamp the cable outlet section of the cable, the position of the cable is fixed, and the situation that the cable slides downwards due to failure of the first driver is avoided.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a nuclear electric heating chamber crane with a height positioning device. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. It is also called an overhead crane, gantry crane, or hoist. The crane's bridge runs longitudinally along tracks laid on elevated structures on both sides, making full use of the space beneath the bridge to lift materials without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery.

[0003] The nuclear power plant hot chamber crane is a special type of crane widely used in the fields of nuclear power generation and waste disposal. The entire nuclear power plant hot chamber is exposed to a high-intensity radiation environment.

[0004] After a crane lifts a load, the cable in the crane's winding device remains taut. Due to the crane's operating conditions, the winding device inevitably becomes fatigued after prolonged use, leading to its failure. This causes the cable to slip downwards, directly causing the load on the hook to fall under the force of gravity. Utility Model Content

[0005] This utility model provides a nuclear power heating chamber crane with a height positioning device. During long-term use, the winding device of this crane inevitably experiences fatigue, leading to failure of the winding device and causing the cable to slip downwards.

[0006] The present invention adopts the following technical solution: a nuclear power plant heating chamber crane with a height positioning device, including a trolley frame, guide rails are installed on both the left and right sides of the trolley frame, a trolley is slidably arranged between the two guide rails, a winding roller is installed above the trolley, a first driver is provided at one end of the winding roller, and a positioning unit for use with a cable is provided below the trolley, the positioning unit is used to fix the position of the cable;

[0007] The positioning unit includes a rectangular sleeve fixed below the trolley. The rectangular sleeve has a first guide wheel and at least one second guide wheel inside. The first guide wheel is located on one side of the second guide wheel. The cable is wound between the first guide wheel and the second guide wheel. A pushing unit is provided on one side of the first guide wheel. A pressing member is provided on the first guide wheel to cooperate with the pushing unit. The pressing member fixes the cable by pressing the cable through the pushing unit.

[0008] Preferably, a driving unit is provided on one side of the rectangular sleeve. The driving unit includes a first ring sleeved on the first support shaft. A second driver is installed on the outside of the rectangular sleeve. The driving end of the second driver passes through the rectangular sleeve and is connected to the first ring.

[0009] Preferably, the pushing unit includes a second ring sleeved on the first support shaft, the second ring corresponding to the first ring, and a plurality of push rods are provided on the side of the second ring facing the first guide wheel. The push rods are arranged in the radial direction of the second ring, and the end of the push rod facing the first guide wheel is provided with an inclined end face.

[0010] Preferably, the extrusion member includes a top block, a bottom plate, and a connecting rod. The extrusion member has a plurality of mounting slots arranged in a circular array inside. The top block slides at the outlet end of the mounting slot. The bottom plate slides inside the mounting slot and corresponds to the inclined end face. The connecting rod is fixed between the top block and the bottom plate. A second elastic element is provided between the bottom plate and the mounting slot. A slide corresponding to the top rod is provided on one side of the mounting slot.

[0011] Preferably, the width of the outlet end of the mounting groove is smaller than the bottom end of the mounting groove, and the top block is adapted to the outlet end of the mounting groove.

[0012] Preferably, the first guide wheel is composed of two discs joined together by bolts, with an arc groove formed between the two discs, and the second guide wheel has an annular groove formed around its circumference. The annular groove and the arc groove are combined to form a guide groove for defining the position of the cable.

[0013] Preferably, raised particles are provided between the annular grooves.

[0014] Preferably, the rectangular sleeve has a first guide wheel and two second guide wheels inside, with the first guide wheel located between the two second guide wheels, and the cable wound between the first guide wheel and the two second guide wheels.

[0015] Preferably, the rectangular sleeve has a first support shaft and two second support shafts installed inside, which are arranged along the width of the rectangular sleeve. The first guide wheel and the second guide wheel are respectively installed on the first support shaft and the second support shaft. A ratchet and pawl structure is provided between the first support shaft and the first guide wheel.

[0016] The beneficial effects of this utility model are:

[0017] 1. During the movement of the suspended object, the pushing unit drives the squeezing component to contact the cable, causing the squeezing component to squeeze the cable. This allows the first guide wheel and the second guide wheel to clamp the cable's exit section, thus fixing the cable's position and preventing the cable from sliding downwards due to the failure of the first drive.

[0018] 2. Under the action of the ratchet and pawl structure, the first guide wheel rotates in one direction. That is, during the descent of the cable, the first guide wheel is stationary under the action of the ratchet and pawl structure. During the ascent of the cable, the first guide wheel rotates under the kinetic energy of the cable's ascent. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the crane of this utility model;

[0020] Figure 2 This is a schematic diagram of the bottom structure of the trolley of this utility model;

[0021] Figure 3 This is a top view of the positioning unit of this utility model.

[0022] Figure 4 This is a side view sectional structural diagram of the positioning unit of this utility model;

[0023] Figure 5 This is a cross-sectional structural diagram of the first guide wheel of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the pusher unit and the extruder of this utility model.

[0025] Figure 7 This is a cross-sectional structural diagram of the mounting groove of this utility model;

[0026] Figure 8 This is a cross-sectional structural diagram of the fit between the first guide wheel and the first support shaft of this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the cable and guide wheel of this utility model.

[0028] In the picture:

[0029] 1. Crane frame; 11. Guide rail; 2. Trolley; 3. Positioning unit; 21. Take-up roller; 22. First driver; 23. Hook; 24. Rectangular through hole; 25. Cable; 31. Rectangular sleeve; 32. First guide wheel; 33. Second guide wheel; 34. First support shaft; 35. Second support shaft; 36. Second driver; 37. Pushing unit; 38. Extrusion component; 39. Guide groove; 321. Mounting groove; 322. Slide rail; 323. Arc groove; 361. First ring; 371. Second ring; 372. Push rod; 373. Inclined end face; 374. First elastic element; 381. Top block; 382. Base plate; 383. Connecting rod; 384. Second elastic element. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0031] like Figures 1 to 9 As shown, this utility model provides a nuclear power plant thermal chamber crane with a height positioning device, including a gantry frame 1. Guide rails 11 are installed on both the left and right sides of the gantry frame 1. A trolley 2 is slidably arranged between the two guide rails 11. A pulley corresponding to the guide rail 11 is installed below the trolley 2. A winding roller 21 is installed above the trolley 2. A first driver 22 is provided at one end of the winding roller 21. The first driver 22 is a motor. A rectangular through hole 24 is opened on the trolley 2. A hook 23 is installed on the winding roller 21 through the rectangular through hole 24 via a cable 25. A positioning unit 3 is provided below the trolley 2 to cooperate with the cable 25. The positioning unit 3 is used to fix the position of the cable 25 to position the hook 23. A rotary transformer sensor and a position processor are provided at one end of the winding roller 21. The rotary transformer sensor is a high-precision sensor that can provide real-time feedback of analog information of the lifting height. The position processor is a high-performance processor that can efficiently and quickly process position information and display position height information in real time while operating the positioning.

[0032] In the above scheme, the object is first hooked by the hook 23, and then the winding roller 21 lifts the object by the first driver 22. Subsequently, the trolley 2 moves on the guide rail 11 on the gantry frame 1 to move the object in the left and right directions. At the same time, the object can also be moved in the front and back directions by the gantry frame 1. During the movement of the object, the position of the cable 25 can be positioned by the positioning unit 3 to prevent the cable 25 from slipping due to the failure of the first driver 22.

[0033] The positioning unit 3 includes a rectangular sleeve 31 fixed below the trolley 2 and corresponding to the rectangular through hole 24. A first guide wheel 32 and a second guide wheel 33 are disposed inside the rectangular sleeve 31. The first guide wheel 32 is located on one side of the second guide wheel 33. A cable 25 is wound between the first guide wheel 32 and the second guide wheel 33. The cable 25 inside the two rectangular sleeves 31 is symmetrically wound. Specifically, a first support shaft 34 and two second support shafts 35 are installed inside the rectangular sleeve 31, extending along the width of the rectangular sleeve 31. The first guide wheel 32 and the second guide wheel 35... 3 are respectively installed on the first support shaft 34 and the second support shaft 35. A ratchet and pawl structure is provided between the first support shaft 34 and the first guide wheel 32. The ratchet and pawl structure is a mature existing technology and will not be described in detail here. The ratchet and pawl structure enables the first guide wheel 32 to rotate in one direction. A push unit 37 is provided on one side of the first guide wheel 32. An extrusion member 38 is provided on the first guide wheel 32 to cooperate with the push unit 37. The extrusion member 38 extrudes the cable 25 through the push unit 37 to fix the position of the cable 25.

[0034] In another embodiment, the rectangular sleeve 31 is provided with a first guide wheel 32 and two second guide wheels 33 inside. The first guide wheel 32 is located between the two second guide wheels 33. The cable 25 is wound between the first guide wheel 32 and the two second guide wheels 33, increasing the number of fixing points for the cable 25 from one to two, thereby improving the effect of fixing the position of the cable 25.

[0035] like Figure 3 and Figure 4 As shown, in order to enable the pushing unit 37 to drive the extrusion member 38 to position the cable 25, in this embodiment, a driving unit is provided on one side of the rectangular sleeve 31. The driving unit includes a first ring 361 sleeved on the first support shaft 34. A second driver 36 is installed on the outside of the rectangular sleeve 31. The second driver 36 is an electric telescopic rod. The driving end of the second driver 36 passes through the rectangular sleeve 31 and is connected to the first ring 361. In detail, there are two second drivers 36 arranged symmetrically, which can increase the stability of the first ring 361 during movement.

[0036] like Figures 5 to 7 As shown, in order to drive the extruder 38 to extrude the cable 25, in this embodiment, the pusher unit 37 includes a second ring 371 sleeved on the first support shaft 34. The second ring 371 corresponds to the first ring 361. A plurality of push rods 372 are provided on the side of the second ring 371 facing the first guide wheel 32. The plurality of push rods 372 are arranged in the radial direction of the second ring 371. The end of the push rod 372 facing the first guide wheel 32 is provided with an inclined end face 373.

[0037] The extrusion component 38 includes a top block 381, a bottom plate 382, ​​and a connecting rod 383. The extrusion component 38 has a plurality of mounting slots 321 arranged in a circular array inside, each mounting slot 321 corresponding to a plurality of top rods 372. The top block 381 slides at the outlet end of the mounting slot 321, the bottom plate 382 slides inside the mounting slot 321 and corresponds to the inclined end face 373, and the connecting rod 383 is fixed between the top block 381 and the bottom plate 382. A second elastic element 384 is provided between the bottom plate 382 and the mounting slot 321. The second elastic element 384 is a spring and is sleeved on the connecting rod 383. A slide rail 322 corresponding to the top rod 372 is provided on one side of the mounting slot 321. In detail... The width of the outlet end of the mounting groove 321 is smaller than that of the bottom end of the mounting groove 321. The top block 381 is adapted to the outlet end of the mounting groove 321 to confine the extruded part 38 within the mounting groove 321 and prevent the extruded part 38 from sliding out of the mounting groove 321. The first guide wheel 32 is composed of two discs connected by bolts to facilitate the installation of the extruded part 38 inside the mounting groove 321. An arc groove 323 is provided between the two discs. The second guide wheel 33 has an annular groove in its circumference. The annular groove and the arc groove 323 are combined to form a guide groove 39 for defining the position of the cable 25. Protruding particles are provided between the annular grooves to increase the friction between the second guide wheel 33 and the cable 25.

[0038] In the above scheme, after the object is lifted by the hook 23 and hoisted to the preset height position, the second driver 36 is activated to push the first ring 361 to move toward the second ring 371, so that the first ring 361 pushes the top rod 372 on the second ring 371 to move and contact the bottom plate 382. At this time, the first elastic element 374 is compressed by force.

[0039] Under the action of the inclined end face 373 on the top rod 372, the top rod 372 pushes the bottom plate 382 to move towards the outside of the mounting groove 321. The bottom plate 382 drives the top block 381 to move and contact the cable 25 through the connecting rod 383, and squeezes the cable 25. At this time, the second elastic element 384 is compressed by force, thereby clamping and fixing the cable 25 between the first guide wheel 32 and the second guide wheel 33, realizing the fixation of the position of the cable 25, thereby avoiding the cable 25 from sliding downward due to the failure of the first driver 22.

[0040] At the same time, under the action of the ratchet and pawl structure, the first guide wheel 32 rotates in one direction. That is, during the descent of the cable 25, the first guide wheel 32 is stationary under the action of the ratchet and pawl structure, and during the ascent of the cable 25, the first guide wheel 32 rotates under the kinetic energy of the ascent of the cable 25.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nuclear power heat chamber crane with height positioning device, comprising a trolley frame, guide rails are installed on the left and right sides of the trolley frame, a trolley is slidingly arranged between the two guide rails, a winding roller is installed above the trolley, and a first driver is arranged at one end of the winding roller, characterized in that: The trolley is equipped with a positioning unit that works with the cable to fix the position of the cable. The positioning unit includes a rectangular sleeve fixed below the trolley. The rectangular sleeve has a first guide wheel and at least one second guide wheel inside. The first guide wheel is located between the two second guide wheels. The cable is wound between the first guide wheel and the two second guide wheels. A pushing unit is provided on one side of the first guide wheel. A pressing member is provided on the first guide wheel to cooperate with the pushing unit. The pressing member fixes the cable by pressing the cable through the pushing unit.

2. A nuclear heat chamber crane with height positioning device according to claim 1, characterized in that: A driving unit is provided on one side of the rectangular sleeve. The driving unit includes a first ring located inside the rectangular sleeve. A second driver is installed on the outside of the rectangular sleeve. The driving end of the second driver passes through the rectangular sleeve and is connected to the first ring.

3. A nuclear heat chamber crane with height positioning device according to claim 2, characterized in that: The pushing unit includes a second ring located inside a rectangular sleeve. The second ring corresponds to the first ring. A plurality of push rods are provided on the side of the second ring facing the first guide wheel. The push rods are arranged in the radial direction of the second ring, and the end of the push rod facing the first guide wheel is provided with an inclined end face.

4. A nuclear heat chamber crane with height positioning device according to claim 3, characterized in that: The extrusion component includes a top block, a bottom plate, and a connecting rod. The extrusion component has several mounting slots arranged in a circular array inside. The top block slides at the outlet end of the mounting slot. The bottom plate slides inside the mounting slot and corresponds to the inclined end face. The connecting rod is fixed between the top block and the bottom plate. A second elastic element is provided between the bottom plate and the mounting slot. A slide corresponding to the top rod is provided on one side of the mounting slot.

5. A nuclear heat chamber crane with height positioning device according to claim 4, characterized in that: The width of the outlet end of the mounting groove is smaller than the bottom end of the mounting groove, and the top block is adapted to the outlet end of the mounting groove.

6. The nuclear heat chamber crane with height positioning device according to claim 4, characterized in that: The first guide wheel is composed of two discs joined together by bolts, with an arc groove between the two discs. The second guide wheel has an annular groove in its circumference. The annular groove and the arc groove are combined to form a guide groove for defining the position of the cable.

7. The nuclear thermal chamber crane with a height positioning device according to claim 6, characterized in that: The annular grooves are provided with protruding particles.

8. The nuclear heat chamber crane with height positioning device according to claim 1, characterized in that: The rectangular sleeve has a first guide wheel and two second guide wheels inside, with the first guide wheel located between the two second guide wheels, and the cable wound between the first guide wheel and the two second guide wheels.

9. The nuclear heat chamber crane with height positioning device according to claim 1, characterized in that: The rectangular sleeve has a first support shaft and two second support shafts installed inside, which are arranged along the width of the rectangular sleeve. The first guide wheel and the second guide wheel are respectively installed on the first support shaft and the second support shaft. A ratchet and pawl structure is provided between the first support shaft and the first guide wheel.

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