Explosion-proof crane carriage for high-temperature maintenance

Abstract

An explosion-proof crane carriage for high-temperature maintenance relates to the technical field of cranes and comprises a carriage frame assembly, a hoisting mechanism and a guide mechanism, a position detection device is arranged on one side of the trolley frame assembly, a hanging beam is arranged below the trolley frame assembly, a vertical guide mechanism is arranged between the hanging beam and the trolley frame assembly, and a hoisting mechanism for hoisting the hanging beam is arranged on one side, corresponding to the guide mechanism, of the trolley frame assembly; a rotating pin lifting appliance is arranged at the bottom of the lifting beam and comprises a connecting seat which is correspondingly connected with the lifting beam in a fastening manner; a connecting sleeve is arranged at the bottom of the connecting seat, a rotating pin is rotationally connected in the connecting sleeve, and a driving device for driving the rotating pin to rotate is mounted on one side of the connecting sleeve; guide plates are arranged on two sides, corresponding to the rotating pin, of the bottom of the connecting sleeve; according to the utility model, the high-precision quick butt joint of the rotating pin lifting appliance and a target object can be realized, so that related personnel are prevented from entering a high-temperature maintenance environment, the contact with combustible and explosive spaceflight fuels is avoided, and the personal safety of the working personnel is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to an explosion-proof lifting trolley used for high-temperature maintenance. Background Art

[0002] Aerospace fuel needs to be maintained at a certain high temperature, and its maintenance and storage are dangerous. At present, the maintenance and storage of aerospace fuel are mainly completed by manually driven forklifts, which has a high risk factor and is difficult to operate. Moreover, during the temperature-controlled maintenance and storage process on the ground, there is a lot of energy loss, and the maintenance temperature is unstable, which will also have a certain impact on the performance of the fuel itself. The high-temperature maintenance of underground aerospace fuel requires automation and lifting equipment with high control accuracy to meet the automatic and precise docking of the hoisting equipment during the high-temperature maintenance of underground aerospace fuel, and then complete the operations of lifting, warehousing, stacking, and storage; to reduce the relevant personnel from entering the high-temperature maintenance environment, avoid contact with flammable and explosive aerospace fuel, and improve the storage safety of aerospace fuel and the personal safety of staff; in view of this, technical personnel in this field urgently need to develop an explosion-proof lifting trolley dedicated to high-temperature maintenance.

[0003] A Chinese patent (publication number: CN214879643U) discloses an automated crane trolley with replaceable slings; the patent includes a trolley frame, an upper sling, a variety of lower slings, and a telescopic guide; the patent improves the stability of the upper sling's lifting and lowering by means of a telescopic guide; however, its structure is complex and the cost of use is relatively high. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the utility model discloses an explosion-proof lifting trolley for high-temperature maintenance.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] An explosion-proof lifting trolley for high-temperature maintenance comprises a trolley frame assembly, a lifting mechanism and a guide mechanism; a position detection device is provided on one side of the trolley frame assembly, a hanging beam is provided below the trolley frame assembly, a vertical guide mechanism is provided between the hanging beam and the trolley frame assembly, and a lifting mechanism for lifting the hanging beam is provided on the side of the trolley frame assembly corresponding to the guide mechanism; a swivel pin hanger is provided at the bottom of the hanging beam, and the swivel pin hanger comprises a connecting seat which is fastened and connected to the corresponding hanging beam; a connecting sleeve is provided at the bottom of the connecting seat, a swivel pin is rotatably connected in the connecting sleeve, and a driving device for driving the swivel pin to rotate is installed on one side of the connecting sleeve; guide plates are provided on both sides of the bottom of the connecting sleeve corresponding to the swivel pin.

[0007] Preferably, the guide mechanism includes a guide sleeve which is fastened to the trolley frame assembly, a hollow primary guide rod is movably inserted in the guide sleeve, and a secondary guide rod is movably inserted in the primary guide rod; a plurality of guide wheel groups are arranged axially at intervals between the outer wall of the primary guide rod and the inner wall of the guide sleeve, and between the outer wall of the secondary guide rod and the inner wall of the primary guide rod, and the guide wheel groups include a plurality of guide wheels arranged circumferentially at intervals; the bottom of the secondary guide rod is fastened to the suspension beam.

[0008] Preferably, the lifting mechanism comprises a drum assembly installed on the trolley frame assembly and a movable pulley group installed on the suspension beam, and the drum assembly is connected to the movable pulley group by a steel wire rope; the driving shaft of the drum assembly is connected to an absolute encoder.

[0009] Preferably, the drum of the drum assembly is a double drum, movable pulley blocks are installed on both sides of the guide mechanism corresponding to the suspension beam, two steel ropes are wound around the double drum, and the two steel ropes are respectively wound and connected with the two movable pulley blocks.

[0010] Preferably, the lifting mechanism also includes a balancing mechanism installed on the trolley frame assembly, the balancing mechanism includes two fixed seats arranged at intervals, a right-angled swing arm is provided on the top of the fixed seat, the right-angled bend of the swing arm is hinged to the fixed seat, and two steel ropes are respectively connected to the horizontal ends of the two swing arms; the vertical ends of the two swing arms are connected to each other through a pull rope.

[0011] Preferably, the position detection device includes an encoder installed on the trolley frame assembly and a rack installed on one side of the traveling track of the trolley frame assembly, and the encoder shaft is installed with a gear corresponding to the rack.

[0012] Preferably, horizontal guide wheel assemblies are installed on both sides of one end of the trolley frame assembly.

[0013] Preferably, a tow chain is provided between the hanging beam and the trolley frame assembly.

[0014] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0015] The utility model discloses an explosion-proof lifting trolley for high-temperature maintenance, wherein a swing pin sling comprises a connecting seat which is fastened to a corresponding lifting beam, a connecting sleeve is provided at the bottom of the connecting seat, and guide plates are provided at both sides of the bottom of the connecting sleeve corresponding to the swing pin; that is, when the swing pin sling is docked with an object to be lifted, the swing pin can be guided by the guide plate first, and then accurately guided by the conical structure at the bottom of the swing pin, thereby improving the docking accuracy and the success rate of the docking; thereby reducing the frequency of operators entering the site and improving the safety factor.

[0016] The utility model further provides a vertical guiding mechanism between the lifting beam and the trolley frame assembly, so that the lifting beam and the trolley frame assembly are rigidly guided and connected. The guiding mechanism is used to ensure the stability of the lifting beam lifting, prevent the lifting beam from swinging, reduce the difficulty of subsequent docking operations, and at the same time improve the stability during the lifting process to avoid safety accidents caused by collision of the lifted object with other objects.

[0017] The utility model further installs a balancing mechanism for balancing the pulling force of two steel ropes on the trolley frame assembly, which can prevent the hanging beam from being unbalanced and causing the guide mechanism to be accidentally stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a side view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the transfer pin sling;

[0021] Figure 4 It is a structural diagram of the balancing mechanism;

[0022] Figure 5 A top view of the guide mechanism.

[0023] In the figure: 1. trolley frame assembly; 2. lifting mechanism; 2-1. drum assembly; 2-2. movable pulley block; 2-3. fixed seat; 2-4. swing arm; 2-5. pull rope; 3. guide mechanism; 3-1. guide sleeve; 3-2. primary guide rod; 3-3. secondary guide rod; 3-4. guide wheel assembly; 4. lifting beam; 5. swivel pin sling; 5-1. connecting seat; 5-2. connecting sleeve; 5-3. swivel pin; 5-4. driving device; 5-5. guide plate; 6. position detection device; 7. horizontal guide wheel assembly; 8. drag chain. DETAILED DESCRIPTION

[0024] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0025] Embodiment 1, in combination with Figures 1 to 5An explosion-proof lifting trolley for high-temperature maintenance comprises a trolley frame assembly 1, a lifting mechanism 2 and a guide mechanism 3; a position detection device 6 is provided on one side of the trolley frame assembly 1, and the position detection device 6 detects the position of the trolley frame assembly 1 in real time, so that the trolley frame assembly 1 can be accurately parked at a predetermined position to facilitate subsequent docking operations.

[0026] The position detection device 6 includes an encoder installed on the trolley frame assembly 1 and a rack installed on one side of the running track of the trolley frame assembly 1. The encoder shaft is installed with a gear corresponding to the rack, that is, when the trolley frame assembly 1 moves along the running track, it can drive the encoder to move relative to the rack, so that the gear can drive the encoder shaft to rotate, thereby accurately detecting the position of the trolley frame assembly 1.

[0027] In order to ensure that the gear can always mesh with the rack, horizontal guide wheel assemblies 7 are installed on both sides of one end of the trolley frame assembly 1, that is, the horizontal guide wheel assembly 7 and the walking track roll in correspondence during the movement of the trolley frame assembly 1, ensuring the smooth and straight movement of the trolley frame assembly 1 and preventing accidental misalignment or jamming of the gear and the rack.

[0028] A hanging beam 4 is provided below the trolley frame assembly 1, and a vertical guide mechanism 3 is provided between the hanging beam 4 and the trolley frame assembly 1. The guide mechanism 3 is used to ensure the smoothness of the lifting and lowering of the hanging beam 4, prevent the hanging beam 4 from swinging, reduce the difficulty of subsequent docking operations, and at the same time improve the stability during the lifting process to avoid safety accidents caused by collision of the lifted object with other objects.

[0029] like Figure 5 As shown, the guide mechanism 3 includes a guide sleeve 3-1 which is fastened correspondingly to the trolley frame assembly 1, a hollow primary guide rod 3-2 is movably inserted in the guide sleeve 3-1, and a secondary guide rod 3-3 is movably inserted in the primary guide rod 3-2, that is, the primary guide rod 3-2 is telescopically connected to the guide sleeve 3-1, and the secondary guide rod 3-3 is telescopically connected to the primary guide rod 3-2; a plurality of guide wheel groups 3-4 are arranged axially at intervals along the guide sleeve 3-1 between the outer wall of the primary guide rod 3-2 and the inner wall of the guide sleeve 3-1, and between the outer wall of the secondary guide rod 3-3 and the inner wall of the primary guide rod 3-2, and the axially spaced arrangement of the plurality of guide wheel groups 3-4 can effectively improve the stability of the primary guide rod 3-2 and the secondary guide rod 3-3 during the telescopic process; the guide wheel group 3-4 includes a plurality of guide wheels arranged at intervals along the circumferential direction; the bottom of the secondary guide rod 3-3 is fastened correspondingly to the suspension beam 4, so that the suspension beam 4 is rigidly guided and connected to the trolley frame assembly 1, thereby ensuring the stability of the lifting and lowering of the suspension beam 4.

[0030] A lifting mechanism 2 for lifting the hanging beam 4 is provided on one side of the trolley frame assembly 1 corresponding to the guide mechanism 3; Figure 2As shown, the lifting mechanism 2 includes a drum assembly 2-1 installed on the trolley frame assembly 1 and a movable pulley group 2-2 installed on the suspension beam 4, and the drum assembly 2-1 is connected to the movable pulley group 2-2 by a wire rope; the driving shaft of the drum assembly 2-1 is connected to an absolute encoder, that is, the absolute encoder is used to detect the length of the drum retracted and released wire rope in real time, thereby being able to accurately determine the height position of the suspension beam 4.

[0031] Furthermore, the drum of the drum assembly 2-1 is a double drum, and movable pulley groups 2-2 are installed on both sides of the guide mechanism 3 corresponding to the hanging beam 4. Two steel wire ropes are wound around the double drum, and the two steel wire ropes are respectively wound and connected with the two movable pulley groups 2-2. The two steel wire ropes are independent of each other, which can effectively improve safety absorption and prevent safety accidents caused by accidental rope breakage.

[0032] Furthermore, the lifting mechanism 2 also includes a balancing mechanism installed on the trolley frame assembly 1, such as Figure 4 As shown, the balancing mechanism includes two fixed seats 2-3 arranged at intervals, a right-angled swing arm 2-4 is provided on the top of the fixed seat 2-3, the right-angled bend of the swing arm 2-4 is hinged to the fixed seat 2-3, and two steel wire ropes are respectively connected to the horizontal ends of the two swing arms 2-4; the vertical ends of the two swing arms 2-4 are connected to each other through a pull rope 2-5; the pulling force of the two steel wire ropes is balanced by the balancing mechanism to prevent the hanging beam 4 from being overloaded and causing the guide mechanism 3 to be accidentally stuck; in addition, compared with the existing balancing arm, the balancing mechanism of this embodiment can adjust the spacing between the two fixed seats 2-3 as needed, and is simple to assemble; and can improve the stress condition of the trolley frame assembly 1.

[0033] A rotating pin hanger 5 is provided at the bottom of the hanging beam 4. Figure 3 As shown, the swivel pin hanger 5 includes a connecting seat 5-1 which is fastened to the corresponding hanging beam 4; a connecting sleeve 5-2 is provided at the bottom of the connecting seat 5-1, and a swivel pin 5-3 is rotatably connected inside the connecting sleeve 5-2, and a driving device 5-4 for driving the swivel pin 5-3 to rotate is installed on one side of the connecting sleeve 5-2, and the driving device 5-4 can be a servo or a telescopic cylinder.

[0034] The driving device 5-4 requires an external power source. If it is a steering gear or an electric telescopic cylinder, an external cable is required. If it is a pneumatic cylinder, an external air pipe is required. If it is a hydraulic cylinder, an external hydraulic pipeline is required. A drag chain 8 is provided between the hanging beam 4 and the trolley frame assembly 1, that is, the cable, air pipe or hydraulic pipeline can be protected by the drag chain 8.

[0035] Guide plates 5-5 are provided on both sides of the corresponding swivel pin 5-3 at the bottom of the connecting sleeve 5-2; that is, when the swivel pin sling 5 is docked with the object to be lifted, the swivel pin 5-3 can be guided by the guide plate 5-5 first, and then accurately guided by the conical structure at the bottom of the swivel pin 5-3, thereby improving the docking accuracy and the success rate of the docking; thereby reducing the frequency of operators entering the site and improving the safety factor.

[0036] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. An explosion-proof lifting trolley for high temperature maintenance, characterized by: The invention comprises a trolley frame assembly (1), a lifting mechanism (2) and a guide mechanism (3); a position detection device (6) is provided on one side of the trolley frame assembly (1); a suspension beam (4) is provided below the trolley frame assembly (1); a vertical guide mechanism (3) is provided between the suspension beam (4) and the trolley frame assembly (1); a lifting mechanism (2) for lifting the suspension beam (4) is provided on one side of the trolley frame assembly (1) corresponding to the guide mechanism (3); a rotating pin sling (5) is provided at the bottom of the suspension beam (4); the rotating pin sling (5) comprises a connecting seat (5-1) which is fastened and connected to the suspension beam (4); a connecting sleeve (5-2) is provided at the bottom of the connecting seat (5-1); a rotating pin (5-3) is rotatably connected in the connecting sleeve (5-2); a driving device (5-4) for driving the rotating pin (5-3) to rotate is installed on one side of the connecting sleeve (5-2); guide plates (5-5) are provided on both sides of the bottom of the connecting sleeve (5-2) corresponding to the rotating pin (5-3).

2. The explosion-proof lifting trolley for high temperature maintenance as claimed in claim 1, characterized in that: The guide mechanism (3) comprises a guide sleeve (3-1) which is correspondingly and fixedly connected to the trolley frame assembly (1); a hollow primary guide rod (3-2) is movably inserted in the guide sleeve (3-1); a secondary guide rod (3-3) is movably inserted in the primary guide rod (3-2); a plurality of guide wheel groups (3-4) are arranged at intervals along the axial direction of the guide sleeve (3-1) between the outer wall of the primary guide rod (3-2) and the inner wall of the guide sleeve (3-1) and between the outer wall of the secondary guide rod (3-3) and the inner wall of the primary guide rod (3-2); the guide wheel groups (3-4) comprise a plurality of guide wheels arranged at intervals along the circumferential direction; and the bottom of the secondary guide rod (3-3) is correspondingly and fixedly connected to the suspension beam (4).

3. The explosion-proof lifting trolley for high temperature maintenance as claimed in claim 1, characterized in that: The lifting mechanism (2) comprises a drum assembly (2-1) mounted on a trolley frame assembly (1) and a movable pulley block (2-2) mounted on a suspension beam (4); the drum assembly (2-1) and the movable pulley block (2-2) are connected via a steel wire rope; and an absolute value encoder is connected to a drive shaft of the drum assembly (2-1).

4. The explosion-proof lifting trolley for high temperature maintenance as claimed in claim 3, characterized in that: The drum of the drum assembly (2-1) is a double drum, and movable pulley blocks (2-2) are installed on both sides of the guide mechanism (3) corresponding to the suspension beam (4), and two steel wire ropes are wound around the double drum, and the two steel wire ropes are respectively wound and connected to the two movable pulley blocks (2-2) correspondingly.

5. The explosion-proof lifting trolley for high temperature maintenance as claimed in claim 4, characterized in that: The lifting mechanism (2) further comprises a balancing mechanism installed on the trolley frame assembly (1), the balancing mechanism comprising two fixed seats (2-3) arranged at intervals, a right-angled swing arm (2-4) being provided on the top of the fixed seat (2-3), the right-angled bending portion of the swing arm (2-4) being correspondingly hinged to the fixed seat (2-3), two steel wire ropes being respectively connected to the horizontal ends of the two swing arms (2-4); and the vertical ends of the two swing arms (2-4) being correspondingly connected via a pull rope (2-5).

6. The explosion-proof lifting trolley for high temperature maintenance as claimed in claim 1, characterized in that: The position detection device (6) comprises an encoder mounted on the trolley frame assembly (1) and a rack mounted on one side of the running track of the trolley frame assembly (1); a gear corresponding to the rack is mounted on the encoder shaft.

7. The explosion-proof lifting trolley for high temperature maintenance according to claim 1 or 6, characterized in that: Horizontal guide wheel assemblies (7) are installed on both sides of one end of the trolley frame assembly (1).

8. The explosion-proof lifting trolley for high temperature maintenance as claimed in claim 1, characterized in that: A tow chain (8) is provided between the hanging beam (4) and the trolley frame assembly (1).

Images