Cable crane

Abstract

The cable crane comprises a walking truss, a machine body, a motor, a cable, a self-rotating rod, a rotating piece, a fixed ring, a wedge-shaped block, a movable plate, a rotating plate, an abutting piece and a switching piece. When the lifting hook is put down, the motor is started, the abutting piece rotates in a reciprocating mode through the rotating piece, the abutting piece abuts against the wedge-shaped block on one fixing ring, clearance rotation of the fixing rings and matched fixation of the stabilizing piece are made to be consistent all the time, and the rotation directions are repeated in sequence, so that the lifting hook below the mooring rope is put down stably at intervals, and the situation that the lifting hook is put down or lifted up too fast is avoided; and potential safety hazards are avoided. The interval movement interval is small and continuous, and the influence on the hoisting efficiency is small; when the lifting hook is lifted, the rotating direction of the motor is not changed through the switching piece, so that the other fixing ring rotates in a clearance mode, the rotating directions are opposite, the lifting hook below the mooring rope is lifted stably at intervals, the rotating direction of the motor does not need to be switched, and loss of a bearing of the motor is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of crane structures, in particular to a cable crane. Background Art

[0002] Cable cranes can run directly on ground tracks or main cables. Compared with traditional lifting cranes, they are more mobile and more applicable.

[0003] The lowering or raising of the hook of an existing cable crane is generally controlled by the forward and reverse rotation of the motor. Frequent forward and reverse rotation of the motor will cause damage to the motor components, among which the most vulnerable components are the motor bearings. In addition, there is no set gap for a short pause during the lowering or raising of the cable, resulting in the lowering or raising speed being too fast. Although the efficiency is improved to a certain extent, the efficiency improvement is relatively low, which increases safety hazards.

[0004] For this purpose, we propose a cable crane. Summary of the invention

[0005] The object of the present invention is to provide a cable crane to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides a cable crane, comprising a traveling truss, a machine body is provided on the traveling truss, a motor and a cable passing through the machine body are provided in the machine body; The invention also comprises a self-rotating rod, a rotating member and two mutually connected and fixedly connected fixed rings, the cable is wound around the self-rotating rod, a plurality of wedge-shaped blocks arranged in opposite directions are respectively fixedly connected to the two fixed rings, the output shaft of the motor is rotatably connected to a movable plate cooperating with the cable through the rotating member, a rotating plate is movably plugged into the end of the movable plate, a pressure piece cooperating with the wedge block is rotatably connected to the rotating plate, the self-rotating rod is plugged into and cooperated with the middle part of the fixed ring, and a switching piece is also provided in the machine body for driving the two fixed rings to move so that the pressure piece switches the position on the two fixed rings.

[0007] Preferably, the pressing member includes a rotating shaft rotatably connected to the rotating plate, and two ratchets that rotate with each other are respectively provided on the rotating shaft through two first torsion spring rods, wherein the length of one of the ratchets is smaller than the length of the other ratchets, and the ratchets are pressed and fitted with the wedge block, and a limit member is provided in the middle of the fixing ring.

[0008] Preferably, the limiting member includes a fixed plate connected and fixed to the body, the rotating rod is rotatably connected to the fixed plate and the rotating plate, a plurality of connecting plates are fixedly connected to the inner wall of the fixed ring, and a sliding groove is provided in the middle of the connecting plate for sliding cooperation with the rotating rod.

[0009] Preferably, the rotating part includes a telescopic rod with a compression part inside, one end of the telescopic rod is fixedly connected to the output shaft of the motor, the other end of the telescopic rod is fixedly connected to a connecting plate, the other end of the connecting plate is rotatably connected to the movable plate, the rotating plate is fixedly connected to an insertion rod passing through the movable plate, and a stabilizing part for maintaining the stability of the fixed ring is also provided on the body.

[0010] Preferably, the stabilizing member comprises two pressure plates rotatably connected to the machine body, the ends of the pressure plates are inclined surfaces pressed against the wedge blocks, and the two pressure plates are arranged in opposite inclined directions.

[0011] Preferably, the switching member includes a matching member and a telescopic cylinder fixedly connected to the machine body, the output end of the telescopic cylinder is fixedly connected to a rotating block rotatably connected to the connecting plate, and the matching member is used to drive the pressure plate to move synchronously when switching and moving the fixed ring.

[0012] Preferably, the mating part comprises a limiting ring connected and fixed to the edge of the fixing ring, the pressure plate is located between the two limiting rings, a rectangular rod is inserted in the body, and a second torsion spring rod is provided between the rectangular rod and the pressure plate.

[0013] Preferably, two limit plates are fixedly connected to the rotating rod, the cable is located between the two limit plates, a plurality of avoidance grooves are provided on the limit plate close to the movable plate, a brush cooperating with the cable is fixedly connected to the movable plate, and the brush moves in the avoidance groove.

[0014] Preferably, a first elastic puller is hung between the movable plate and the rotating plate, a limiting groove is provided on the outer surface of the sleeve rod of the telescopic rod, and a limiting slide plate slidably matched with the limiting groove is fixedly connected inside the sleeve of the telescopic rod.

[0015] Preferably, a second elastic puller is hung between the movable plate and the connecting plate to ensure the reciprocating motion of the movable plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When the hook is lowered, the motor is started, and the rotating plate is reciprocated at a certain angle through the rotating member, so that the pressing member is reciprocated, and the pressing member presses the wedge block on one of the fixed rings to rotate the gap of the fixed ring, and the stabilizing member is fixed with the same direction, and the rotation is repeated in sequence, so that the hook under the cable is lowered at intervals and smoothly, avoiding the hook from being lowered or lifted too quickly, causing safety hazards, and the interval movement in the present application is small and continuous, which has little impact on the lifting efficiency; When the hook is lifted, the switching part is used, the rotation direction of the motor remains unchanged, and the pressure part acts on the wedge block on the other fixed ring. Since the inclination direction of the wedge block is opposite to the inclination direction of the wedge block on one fixed ring, the gap of the other fixed ring is rotated, and the rotation direction is opposite, which is repeated in sequence, so that the hook interval under the cable is lifted smoothly. This application does not need to switch the rotation direction of the motor, thereby reducing the wear on the motor bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the split structure of the walking truss and the body of the present invention; Figure 3 It is a schematic diagram of the internal structure of the machine body and the disassembly of the machine body and the motor of the present invention; Figure 4 It is an enlarged schematic diagram of the internal structure of the machine body of the present invention; Figure 5 It is a schematic side view of the internal structure of the machine body of the present invention; Figure 6 It is a top view schematic diagram of the internal structure of the machine body of the present invention; Figure 7 It is a schematic diagram of the disassembly of the connecting plate, the movable plate and the second elastic pull member of the present invention; Figure 8 It is a schematic diagram of the disassembly of the rotating block and the fixed ring of the present invention; Fig. 9 It is a schematic diagram of the disassembly of the movable plate and the plug rod of the present invention; Fig.10 It is a schematic diagram of the disassembly of the self-rotating rod and the limiting plate of the present invention; Fig.11 It is a left side schematic diagram of the split structure of the self-rotating rod, the limiting plate and the movable plate of the present invention; Fig.12 It is a schematic diagram of the disassembly of the self-rotating rod, the rotating plate and the fixed plate of the present invention; Fig.13 It is a schematic diagram of the split structure of the pressure plate and the wedge block of the present invention; Fig.14 It is a schematic diagram of the split structure of two fixing rings of the present invention; Fig.15 It is a schematic diagram of the split structure of two ratchets, a pressure plate and a wedge block of the present invention.

[0018] In the figure: 1. walking truss; 2. machine body; 3. motor; 4. cable; 5. rotating rod; 6. fixing ring; 7. wedge block; 8. movable plate; 9. rotating plate; 10. rotating shaft; 11. ratchet; 12. fixing plate; 13. connecting plate; 14. sliding groove; 15. telescopic rod; 16. connecting plate; 17. plug rod; 18. pressure plate; 19. telescopic cylinder; 20. rotating block; 21. limiting ring; 22. rectangular rod; 23. limiting plate; 24. avoidance groove; 25. brush; 26. first elastic puller; 27. second elastic puller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. 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.

[0020] See also Figure 1-Figure 15 The present invention provides a cable crane, comprising a traveling truss 1, a body 2 is arranged on the traveling truss 1, a motor 3 and a cable 4 passing through the body 2 are arranged in the body 2; It also includes a self-rotating rod 5, a rotating member, and two mutually connected and fixed fixing rings 6. The cable 4 is wound around the self-rotating rod 5. The two fixing rings 6 are respectively fixedly connected with a plurality of wedge-shaped blocks 7 arranged in opposite directions. The output shaft of the motor 3 is rotatably connected with a movable plate 8 that cooperates with the cable 4 through the rotating member. The end of the movable plate 8 is movably plugged with a rotating plate 9. The rotating plate 9 is rotatably connected with a pressing member that cooperates with the wedge-shaped block 7. The self-rotating rod 5 is plugged and matched with the middle part of the fixing ring 6. A switching member that drives the two fixing rings 6 to move so that the pressing member switches positions on the two fixing rings 6 is also provided in the machine body 2. The hook under the cable 4 needs to be lowered: the motor 3 rotates, and the rotating plate 9 reciprocates at a certain angle through the rotating member, so that the pressing member reciprocates, and the pressing member presses the wedge block 7 on one of the fixed rings 6, so that the fixed ring 6 rotates in a gap, and the stabilizing member is fixed with the same direction of rotation, and the rotation is repeated in sequence, so that the hook under the cable 4 is lowered at intervals and smoothly; The hook under the cable 4 needs to be lifted up: the two fixing rings 6 are moved by the switching member, while the position of the pressing member remains unchanged, so that one fixing ring 6 is out of contact with the pressing member, and the wedge block 7 on the other fixing ring 6 is pressed against the pressing member, the motor 3 continues to rotate, and the reciprocating pressing member acts on the wedge block 7 on the other fixing ring 6. Since the inclination direction of the wedge block 7 is opposite to that of the wedge block 7 on one fixing ring 6, the other fixing ring 6 is rotated in the opposite direction, and the rotation is repeated in sequence, so that the hook under the cable 4 is lifted up at intervals and steadily; In the present application, the motor 3 rotates in the clockwise direction all the time, and does not need to rotate forward or reverse.

[0021] The pressing member includes a rotating shaft 10 rotatably connected to the rotating plate 9, and two ratchet teeth 11 rotatably matched with each other are respectively arranged on the rotating shaft 10 through two first torsion spring rods, wherein the length of one ratchet tooth 11 is smaller than the length of the other ratchet tooth 11, and the ratchet teeth 11 are pressed and matched with the wedge block 7, and a stopper is arranged in the middle of the fixing ring 6; The rotating plate 9 that reciprocates drives the two ratchets 11 to reciprocate synchronously. The ratchets 11 are initially located at the upper position. The ratchets 11 press against one of the wedge blocks 7 and rotate in a circle, driving the fixed ring 6 to rotate half a circle. At this time, the ratchets 11 move to the lower position. The ratchets 11 contact the pressing plate 18, causing the pressing plate 18 to rotate, thereby causing a wedge block 7 that has moved to the lower position to pass over the rotating pressing plate 18. Then the ratchets 11 are reset and rotated to the upper side. The reset ratchets 11 release the pressing against the pressing plate 18, and the pressing plate 18 is reset, thereby limiting one wedge block 7, preventing the wedge block 7 from rotating, and preventing the fixed ring 6 from rotating. During the process of the ratchet teeth 11 resetting and rotating upward, the two ratchet teeth 11 pass over the other wedge block 7 (at this time the other wedge block 7 is in the upper position), so that the ratchet teeth 11 press against the other wedge block 7, so as to facilitate the next reciprocating movement of the two ratchet teeth 11, and drive the fixing ring 6 to rotate in the needle direction at the same time again, so that the gap of the cable 4 can be stably retracted and released.

[0022] The limiting member includes a fixed plate 12 connected and fixed to the body 2, the rotation rod 5 is rotationally connected to the fixed plate 12 and the rotating plate 9, a plurality of connecting plates 13 are fixedly connected to the inner wall of the fixed ring 6, a sliding groove 14 is opened in the middle of the connecting plate 13 for sliding cooperation with the rotation rod 5, and the end of the rotation rod 5 is slidingly connected to the sliding groove 14, so that when the telescopic cylinder 19 drives the fixed ring 6 and the connecting plate 13 to move and switch, the connecting plate 13 slides along the rotation rod 5 without affecting the rotation of the connecting plate 13 and the fixed ring 6 to drive the rotation of the rotation rod 5.

[0023] The rotating member includes a telescopic rod 15 with a compression member inside, one end of the telescopic rod 15 is connected and fixed to the output shaft of the motor 3, the other end of the telescopic rod 15 is fixedly connected to a connecting plate 16, the other end of the connecting plate 16 is rotatably connected to the movable plate 8, the rotating plate 9 is fixedly connected to a plug rod 17 that penetrates the movable plate 8, and a stabilizing member that maintains the stability of the fixing ring 6 is also provided in the machine body 2; The motor 3 rotates, driving the telescopic rod 15 to rotate, thereby causing the connecting plate 16 to rotate in a circle (with the axial direction of the telescopic rod 15 as the rotation center). Under the action of the second elastic puller 27, the rotation range of the movable plate 8 is limited, so that the movable plate 8 reciprocates at a certain angle, thereby driving the rotating plate 9 to reciprocate at a certain angle through the insertion rod 17, and the self-rotating rod 5 rotates, and the self-rotating rod 5 rotates with the rotation of the fixed ring 6, so that the cable 4 is continuously wound; By limiting the length of the connecting plate 16 and the movable plate 8 and cooperating with the second elastic puller 27 , the two ratchet teeth 11 will not bypass the topmost point and the lowest point of the fixed ring 6 , thereby ensuring the reciprocating rotation of the rotating plate 9 .

[0024] The stabilizing member includes two pressing plates 18 rotatably connected to the machine body 2, and the ends of the pressing plates 18 are inclined surfaces that press against the wedge block 7. The two pressing plates 18 are arranged in opposite inclined directions. The two ratchets 11 located at the upper position make reciprocating rotations, first driving a wedge block 7 (located at the upper position) of the fixed ring 6 to move, thereby causing the wedge block 7 to make a circular rotation. When the wedge block 7 moves to the lower position, it presses against the pressing plate 18, causing the pressing plate 18 to rotate, facilitating the passage of the wedge block 7. After the wedge block 7 passes through the pressing plate 18, under the action of the second torsion spring rod, the pressing plate 18 rotates and fits the fixed ring 6, and presses on the wedge block 7 to prevent the fixed ring 6 from rotating, while the other wedge block 7 moves to the upper side, and the two ratchets 11 that make reciprocating rotations pass over the other wedge block 7, pressing the wedge block 7, facilitating the rotation of the fixed ring 6 again.

[0025] The switching member includes a matching member and a telescopic cylinder 19 connected and fixed to the machine body 2. The output end of the telescopic cylinder 19 is fixedly connected to a rotating block 20 rotatably connected to the connecting plate 13. The matching member is used to drive the pressing plate 18 to move synchronously when switching the moving fixed ring 6. When the hook at the bottom of the cable 4 needs to be operated in reverse (for example, when the hook needs to be lifted upward after being lowered), the two ratchets 11 cooperate with the wedge block 7 on the fixing ring 6 close to the cable 4, and the output end of the telescopic cylinder 19 is extended and retracted through the remote control, so that the positions of the two fixing rings 6 move synchronously, and the two pressure plates 18 move synchronously with the fixing rings 6. The two fixing rings 6 move relative to the two ratchets 11, so that the two ratchets 11 cooperate with the two wedge blocks 7 on the fixing ring 6 away from the cable 4. When the motor 3 continues to rotate, the two ratchets 11 reciprocate the wedge blocks 7, so that the cable 4 rotates and the hook is lifted.

[0026] The mating parts include a limit ring 21 connected and fixed to the edge of the fixed ring 6, the pressure plate 18 is located between the two limit rings 21, a rectangular rod 22 is inserted into the body 2, and a second torsion spring rod is provided between the rectangular rod 22 and the pressure plate 18. Under the telescopic action of the output end of the telescopic cylinder 19 (which can be a cylinder or an electric telescopic rod), the fixed ring 6 moves. When the fixed ring 6 moves, under the action of the limit ring 21, the pressure plate 18 that is temporarily not rotating in the limit ring 21 moves synchronously, the second torsion spring rod moves synchronously, and the rectangular rod 22 moves along the body 2. During the whole process, the rectangular rod 22 does not rotate relative to the body 2.

[0027] Two limit plates 23 are fixedly connected to the rotating rod 5, and the cable 4 is located between the two limit plates 23. A plurality of avoidance grooves 24 are provided on the limit plate 23 close to the movable plate 8. A brush 25 cooperating with the cable 4 is fixedly connected to the movable plate 8. The brush 25 in the present application has a certain elasticity, and the long length of the brush 25 is also convenient for replacement. The brush 25 moves in the avoidance groove 24, and the movable plate 8 makes a reciprocating motion at a certain angle relative to the limit plate 23, thereby driving the brush 25 to move along the limit plate 23. The brush 25 with a certain elasticity enters the avoidance groove 24, so that the brush 25 contacts the wound cable 4, and simply cleans the dust on the cable 4 to avoid dust accumulation.

[0028] A first elastic puller 26 is hung between the movable plate 8 and the rotating plate 9, and a limiting groove is provided on the outer surface of the sleeve of the telescopic rod 15. A limiting slide plate that slides with the limiting groove is fixedly connected inside the sleeve of the telescopic rod 15. Through the restriction of the limiting slide plate and the limiting groove, the motor 3 drives the connecting plate 16 to make a circular motion through the telescopic rod 15. At the same time, under the action of the first elastic puller 26, the movement of the connecting plate 16 approaching or moving away from the cable 4 is not affected, so that the movable plate 8 can drive the rotating plate 9 to make a continuous reciprocating motion on the one hand, and drive the brush 25 to act on the cable 4 along the limiting plate 23 on the other hand.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable crane, comprising: A walking truss (1), wherein a machine body (2) is provided on the walking truss (1), and a motor (3) and a cable (4) passing through the machine body (2) are provided inside the machine body (2); The invention is characterized in that it also comprises: a self-rotating rod (5), a rotating member and two mutually connected and fixedly connected fixed rings (6), the cable (4) is wound around the self-rotating rod (5), and the two fixed rings (6) are respectively fixedly connected with a plurality of wedge blocks (7) arranged in opposite directions, the output shaft of the motor (3) is rotatably connected with a movable plate (8) cooperating with the cable (4) through the rotating member, the end of the movable plate (8) is movably plugged with a rotating plate (9), and the rotating plate (9) is rotatably connected with a pressure piece cooperating with the wedge block (7), the self-rotating rod (5) is plugged with the middle part of the fixed ring (6), and the body (2) is also provided with a switching piece for driving the two fixed rings (6) to move so that the pressure piece switches the position on the two fixed rings (6).

2. The cable crane according to claim 1, characterized in that: The pressing member comprises a rotating shaft (10) rotatably connected to the rotating plate (9), and two ratchet teeth (11) rotatably matched with each other are respectively arranged on the rotating shaft (10) through two first torsion spring rods, wherein the length of one of the ratchet teeth (11) is smaller than the length of the other ratchet tooth (11), and the ratchet teeth (11) are pressed and matched with the wedge block (7), and a limiting member is provided in the middle of the fixing ring (6).

3. The cable crane according to claim 2, characterized in that: The limiting member comprises a fixed plate (12) connected and fixed inside the machine body (2); the self-rotating rod (5) is rotatably connected to the fixed plate (12) and the rotating plate (9); a plurality of connecting plates (13) are fixedly connected to the inner wall of the fixing ring (6); and a sliding groove (14) is provided in the middle of the connecting plate (13) for slidably cooperating with the self-rotating rod (5).

4. The cable crane according to claim 3, characterized in that: The rotating member comprises a telescopic rod (15) with a compression member inside, one end of the telescopic rod (15) is fixedly connected to the output shaft of the motor (3), the other end of the telescopic rod (15) is fixedly connected to a connecting plate (16), the other end of the connecting plate (16) is rotatably connected to the movable plate (8), the rotating plate (9) is fixedly connected to an insertion rod (17) that passes through the movable plate (8), and a stabilizing member for maintaining the stability of the fixing ring (6) is also provided in the machine body (2).

5. The cable crane according to claim 4, characterized in that: The stabilizing member comprises two pressure plates (18) rotatably connected to the machine body (2), the ends of the pressure plates (18) being inclined surfaces that are pressed against the wedge blocks (7), and the two pressure plates (18) being arranged in opposite inclined directions.

6. The cable crane according to claim 5, characterized in that: The switching member comprises a matching member and a telescopic cylinder (19) fixedly connected to the machine body (2); an output end of the telescopic cylinder (19) is fixedly connected to a rotating block (20) rotatably connected to the connecting plate (13); and the matching member is used to drive the pressure plate (18) to move synchronously when switching the movable fixed ring (6).

7. The cable crane according to claim 6, characterized in that: The mating component comprises a limiting ring (21) connected and fixed to the edge of the fixing ring (6); the pressure plate (18) is located between the two limiting rings (21); a rectangular rod (22) is inserted into the machine body (2); and a second torsion spring rod is provided between the rectangular rod (22) and the pressure plate (18).

8. The cable crane according to claim 1, characterized in that: Two limit plates (23) are fixedly connected to the rotation rod (5), the cable (4) is located between the two limit plates (23), a plurality of avoidance grooves (24) are provided on the limit plate (23) close to the movable plate (8), a brush (25) cooperating with the cable (4) is fixedly connected to the movable plate (8), and the brush (25) moves in the avoidance groove (24).

9. The cable crane according to claim 4, characterized in that: A first elastic pull piece (26) is hung between the movable plate (8) and the rotating plate (9), a limiting groove is provided on the outer surface of the sleeve of the telescopic rod (15), and a limiting slide plate slidably matched with the limiting groove is fixedly connected inside the sleeve of the telescopic rod (15).

10. The cable crane according to claim 4, characterized in that: A second elastic pull piece (27) is hung between the movable plate (8) and the connecting plate (16).

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