Environmentally friendly bridge crane

Abstract

The present invention relates to the technical field of lifting equipment, specifically an environmentally friendly bridge crane, comprising a lifting frame and two clamping mechanisms arranged on the lifting frame, the two clamping mechanisms are arranged relatively to each other, the clamping mechanism comprises an internal panel, the internal panel is provided with a plurality of first arc-shaped slide grooves and second arc-shaped slide grooves, the first arc-shaped slide grooves and the second arc-shaped slide grooves are arranged relatively to each other; the two internal panels are rotatably connected to a middle panel on the side away from each other, and the middle panel is provided with a plurality of first straight slide grooves. The present invention fixes the cylindrical object by tightening the inside and outside at the same time, and compared with the traditional method of fixing the cylindrical object by hooking, the fixing stability is higher, and the deformation of the cylindrical object during lifting can be prevented; during the use of the present invention, the movement distance of the inner clamping block and the outer clamping block can be automatically adjusted according to the inner diameter and thickness of the cylindrical object, further improving the practicality of the device.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, and in particular to an environmentally friendly bridge crane. Background Art

[0002] A bridge crane is a lifting device that is horizontally mounted above a workshop, warehouse, or material yard to lift materials. Because its two ends are located on tall concrete columns or metal brackets, it looks like a bridge. The bridge of a bridge crane runs longitudinally along the tracks laid on the elevated platforms on both sides, making full use of the space under the bridge to lift materials without being hindered by ground equipment. It is the most widely used and most numerous type of lifting machinery.

[0003] In the production process of some workshops, cylindrical objects need to be lifted. The traditional lifting process is mostly to manually clamp the hooks at both ends of the cylindrical object, connect the hooks with wire ropes, and then pull the wire ropes by the crane to achieve the lifting work. After the lifting is completed, the hooks need to be removed manually. This method is complicated to operate and has low work efficiency. In addition, when lifting some cylindrical objects with large inner diameters and small thicknesses, the high loading and unloading position of the hooks makes it very inconvenient to manually load and unload the hooks. The characteristics of large inner diameters and small thicknesses make the cylindrical objects easy to deform, and the contact area between the hooks and the cylindrical objects is small, which causes the cylindrical objects to deform during the lifting process. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an environmentally friendly bridge crane to solve the above problems.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An environmentally friendly bridge crane comprises a lifting frame and two clamping mechanisms arranged on the lifting frame, the two clamping mechanisms are arranged opposite to each other, the clamping mechanisms comprise an inner panel, a plurality of first arc-shaped slide grooves and a second arc-shaped slide groove are provided on the inner panel, the first arc-shaped slide groove and the second arc-shaped slide groove are arranged opposite to each other; a middle panel is rotatably connected to the side of the two inner panels away from each other, a plurality of first straight slide grooves are provided on the middle panel, an inner clamping piece is slidably matched on the first arc-shaped slide groove, and the first straight slide groove and the inner clamping piece are slidably matched; an outer panel is rotatably connected to the side of the middle panel away from the inner panel, a plurality of second straight slide grooves are provided on the outer panel, an outer clamping piece is slidably matched on the second arc-shaped slide groove, and the outer clamping piece and the second straight slide groove are slidably matched;

[0007] The inner panel, the middle panel and the outer panel are all arranged in an annular shape, and the inner walls of the inner panel, the middle panel and the outer panel are respectively coaxially fixedly connected with a first annular plate, a second annular plate and a third annular plate, a sleeve is coaxially rotatably connected in the first annular plate, and the sleeve coaxially penetrates the second annular plate and the third annular plate, an elastic block is fixedly connected on the outer surface of the sleeve, and the inner walls of the second annular plate and the third annular plate are provided with a card groove matching the elastic block; a locking component is provided on the first annular plate, and the locking component is used to limit the position of the second annular plate and the third annular plate;

[0008] The lifting frame is provided with a driving component, the driving component is drivingly connected to the sleeve, and the driving component is drivingly connected to the locking component.

[0009] Preferably, the inner clamping member includes an inner clamping block, a connecting rod is provided on the inner clamping block, one end of the connecting rod passing through the first arc-shaped slide groove is fixedly connected to the first guide block, and the first straight slide groove is slidingly matched with the first guide block; the connecting rod located on the first arc-shaped slide groove is fixedly connected to the second guide block, and the first arc-shaped slide groove is slidingly matched with the second guide block.

[0010] Preferably, the outer clamping member includes an outer clamping block, to which a U-shaped rod and a third guide block are fixedly connected, the other end of the U-shaped rod is inserted into the second straight slide groove and can slide in the second straight slide groove, and the second arc-shaped slide groove is slidably matched with the third guide block.

[0011] Preferably, the driving component includes a rotating rod rotatably arranged on the lifting frame, the rotating rod is provided with two first spiral grooves, and the two first spiral grooves are arranged in opposite directions. A motor is installed on the lifting frame, and the output end of the motor is coaxially fixedly connected to the rotating rod.

[0012] Preferably, the lifting frame is provided with a guide groove matching the first spiral groove, the guide groove is slidably fitted with a drive plate, the drive plate is provided with a through hole, the rotating rod passes through the through hole, a first protrusion is fixedly connected to the inner wall of the through hole, and the outer surface of the first protrusion is slidably fitted with the inner wall of the first spiral groove.

[0013] Preferably, the two driving plates are fixedly connected with an insertion rod on one side close to each other, the other end of the insertion rod is inserted into the interior of the sleeve, a second protrusion is fixedly connected to the inner wall of the sleeve, a second thread groove and two third straight grooves are provided on the outer surface of the insertion rod, the second thread groove is located between the two third straight grooves, and the second thread groove is connected to the inside of the third straight groove, and the second thread groove and the third straight groove are both slidably matched with the second protrusion.

[0014] Preferably, a push plate is coaxially rotatably connected to the insertion rod between the sleeve and the driving plate, and a first spring is installed between the sleeve and the push plate.

[0015] Preferably, the locking component includes a sleeve rod fixed on the first annular plate, a slider slidably fitted inside the sleeve rod, a positioning rod is fixedly connected to the side of the slider close to the push plate, the other end of the positioning rod passes through the sleeve rod, and a limiting block is fixedly connected to the positioning rod outside the sleeve rod, one side of the limiting block is provided with a slope, the second annular plate and the third annular plate are both fixedly connected with arc-shaped ratchet bars, the two arc-shaped ratchet bars are both engaged with the limiting block, and a second spring is sleeved on the positioning rod inside the sleeve rod.

[0016] Preferably, the push plate is fixedly connected with a positioning frame, the positioning frame is provided with a guide hole, one end of the positioning rod passes through the sleeve rod and is slidably connected with the inner wall of the guide hole; an elastic stopper is fixedly connected to the positioning rod between the push plate and the sleeve rod.

[0017] Preferably, rollers are provided on both the inner panel and the driving plate.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention fixes the cylindrical object by tightening both inside and outside at the same time. Compared with the traditional method of fixing the cylindrical object by hooking, the fixing stability is higher and the deformation of the cylindrical object during lifting can be prevented. During the use of the present invention, the movement distance of the inner clamping block and the outer clamping block can be automatically adjusted according to the inner diameter and thickness of the cylindrical object, which further improves the practicality of the device.

[0020] 2. During the use of the present invention, the matching state of the arc-shaped ratchet bar and the limit block can be automatically adjusted according to the state of the cylindrical object loading and unloading work, and the staff does not need to spend extra time on adjustment operations, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the connection between the lifting frame and the clamping mechanism of the present invention.

[0023] Figure 3 It is a schematic cross-sectional structural diagram of the clamping mechanism of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the inner clamping block of the present invention.

[0026] Figure 6 It is a schematic structural diagram of the outer clamping block of the present invention.

[0027] Figure 7 It is a schematic cross-sectional structural diagram of the sleeve of the present invention.

[0028] Figure 8 It is a schematic cross-sectional structural diagram of the sleeve rod of the present invention.

[0029] Fig. 9 It is a structural schematic diagram of the plug rod of the present invention.

[0030] Fig.10 It is a schematic cross-sectional structural diagram of the driving plate of the present invention.

[0031] In the attached drawings: 1, lifting frame; 2, inner panel; 3, first arc-shaped slide groove; 4, second arc-shaped slide groove; 5, middle panel; 6, first straight slide groove; 7, inner clamping block; 8, outer panel; 9, second straight slide groove; 10, first annular plate; 11, second annular plate; 12, third annular plate; 13, sleeve; 14, first guide block; 15, second guide block; 16, outer clamping block; 17, U-shaped rod; 18, third guide block; 19, guide groove; 20. Drive plate; 21. Rotating rod; 22. Motor; 23. First protrusion; 24. Inserting rod; 25. Second protrusion; 26. Second threaded groove; 27. Third straight sliding groove; 28. Push plate; 29. ​​First spring; 30. Sleeve rod; 31. Sliding block; 32. Positioning rod; 33. Limit block; 34. Arc ratchet bar; 35. Second spring; 36. Positioning frame; 37. Elastic stop block; 38. Roller; 39. Crane body; 40. Elastic block. DETAILED DESCRIPTION

[0032] The following will refer to Figures 1 to 10 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0033] Environmentally friendly bridge cranes, such as Figure 1-Figure 7As shown, it includes a lifting frame 1 and two clamping mechanisms arranged on the lifting frame 1, the two clamping mechanisms are arranged oppositely, the clamping mechanism includes an inner panel 2, a plurality of first arc-shaped slide grooves 3 and second arc-shaped slide grooves 4 are opened on the inner panel 2, and the first arc-shaped slide grooves 3 and the second arc-shaped slide grooves 4 are arranged oppositely; a middle panel 5 is rotatably connected to the side of the two inner panels 2 away from each other, a plurality of first straight slide grooves 6 are opened on the middle panel 5, an inner clamping member is slidably matched on the first arc-shaped slide groove 3, and the first straight slide groove 6 is slidably matched with the inner clamping member; the inner clamping member includes an inner The clamping block 7, a connecting rod is provided on the inner clamping block 7, and the connecting rod passes through one end of the first arc-shaped slide groove 3 and is fixedly connected to the first guide block 14, and the first straight slide groove 6 is slidably matched with the first guide block 14; the connecting rod located on the first arc-shaped slide groove 3 is fixedly connected to the second guide block 15, and the first arc-shaped slide groove 3 is slidably matched with the second guide block 15; when the middle panel 5 rotates, the second guide block 15 slides in the first arc-shaped slide groove 3, and the first guide block 14 moves along the first straight slide groove 6, so that the inner clamping block 7 can move close to or away from the axis of the inner panel 2.

[0034] The middle panel 5 is rotatably connected to the side away from the inner panel 2 with an outer panel 8, and a plurality of second straight grooves 9 are provided on the outer panel 8. The second arc groove 4 is slidably matched with an outer clamping piece, and the outer clamping piece is slidably matched with the second straight groove 9; the outer clamping piece includes an outer clamping block 16, and a U-shaped rod 17 and a third guide block 18 are fixedly connected to the outer clamping block 16. The other end of the U-shaped rod 17 is inserted into the second straight groove 9 and can slide in the second straight groove 9, and the second arc groove 4 is slidably matched with the third guide block 18; when the outer panel 8 rotates, the third guide block 18 is driven to slide in the second arc groove 4, and at the same time, the U-shaped rod 17 moves along the second straight groove 9, so that the outer clamping block 16 can move close to or away from the axis of the inner panel 2.

[0035] The inner panel 2, the middle panel 5 and the outer panel 8 are all arranged in a ring shape, and the inner walls of the inner panel 2, the middle panel 5 and the outer panel 8 are respectively coaxially fixedly connected with the first ring plate 10, the second ring plate 11, and the third ring plate 12, a sleeve 13 is coaxially rotatably connected in the first ring plate 10, the sleeve 13 coaxially penetrates the second ring plate 11 and the third ring plate 12, an elastic block 40 is fixedly connected on the outer surface of the sleeve 13, and the inner walls of the second ring plate 11 and the third ring plate 12 are provided with grooves matching the elastic block 40; a driving component is arranged on the lifting frame 1, and the driving component is drivingly connected to the sleeve 13.

[0036] In the initial state, the elastic block 40 is in an engaged state with the slot. When the driving component drives the sleeve 13 to rotate in the forward direction, the elastic block 40 abuts against the inner wall of the slot and causes the second annular plate 11 and the third annular plate 12 to rotate; when the second annular plate 11 rotates, the middle panel 5 rotates, and the inner clamping block 7 moves away from the axis of the inner panel 2 through the cooperation of the first arc-shaped slot 3, the first straight slot 6, the first guide block 14 and the second guide block 15, and the inner clamping block 7 presses the cylindrical object from the inside; when the third annular plate 12 rotates, the outer panel 8 rotates, and the outer clamping block 1 6 moves in the direction close to the axis of the inner panel 2, and the outer clamping block 16 presses the cylindrical object from the outside; the present device fixes the cylindrical object by simultaneously pressing inside and outside, and its fixing stability is higher, which can prevent the cylindrical object from deforming during lifting (especially for cylindrical objects with large inner diameter and small thickness, the cylindrical objects are mostly fixed by hooks or external clamping devices in the traditional way. The contact area between the hook and the lifting cylinder is small. When the cylindrical object is lifted, it is easily affected by the weight of the cylindrical object itself and easily causes deformation of the cylindrical object; and when the external clamping device fixes the cylindrical object, it only clamps the cylindrical object from the outside, and the fixing stability is low. It is easily affected by the clamping force strength, the weight of the cylindrical object itself and other factors, and the cylindrical object is easily deformed inward during lifting).

[0037] It should be noted that the movement distance of the inner clamping block 7 and the outer clamping block 16 will change due to the different inner diameters and thicknesses of the cylindrical object; for example, when clamping a cylindrical object with a small inner diameter and a small thickness, the sleeve 13 rotates to rotate the middle panel 5 and the outer panel 8, and the inner clamping block 7 moves away from the axis of the inner panel 2, while the outer clamping block 16 moves close to the axis of the inner panel 2. Due to the small inner diameter, the inner clamping block 7 first presses against the inner wall of the cylindrical object. At this time, the inner clamping block 7 can no longer move, that is, the middle panel 5 can no longer rotate. When the sleeve 13 continues to rotate, the groove on the second annular plate 11 is disengaged from the corresponding elastic block 40, and then, when the sleeve 13 continues to rotate, only the outer clamping block 16 will continue to move until the outer clamping block 16 presses against the outer wall of the cylindrical object; the present device can automatically adjust the movement distance of the inner clamping block 7 and the outer clamping block 16 according to the different inner diameters and thicknesses of the cylindrical object, thereby further improving the practicality of the device.

[0038] like Figure 1 , Figure 2 and Fig.10As shown, the driving component includes a rotating rod 21 rotatably arranged on the lifting frame 1, and two first spiral grooves are arranged on the rotating rod 21, and the setting directions of the two first spiral grooves are opposite. A motor 22 is installed on the lifting frame 1, and the output end of the motor 22 is coaxially fixedly connected with the rotating rod 21. The motor 22 is a servo motor and can rotate forward and reversely; a guide groove 19 matching the first spiral groove is opened on the lifting frame 1, and a driving plate 20 is slidably fitted on the guide groove 19. A through hole is opened on the driving plate 20, and the rotating rod 21 passes through the through hole. A first protrusion 23 is fixedly connected to the inner wall of the through hole, and the outer surface of the first protrusion 23 is slidably fitted with the inner wall of the first spiral groove.

[0039] When the motor 22 is started, the rotating rod 21 is driven to rotate, and then the driving plate 20 slides along the direction of the guide groove 19 through the cooperation of the first protrusion 23 and the spiral groove; it should be noted that since the two first spiral grooves are set in opposite directions, when the rotating rod 21 rotates, the movement directions of the two driving plates 20 are opposite, that is, the two driving plates 20 move towards or away from each other.

[0040] like Figure 3 , Figure 7 and Fig. 9 As shown, the two driving plates 20 are fixedly connected with an insertion rod 24 on one side close to each other, and the other end of the insertion rod 24 is inserted into the interior of the sleeve 13. A second protrusion 25 is fixedly connected to the inner wall of the sleeve 13. A second thread groove 26 and two third straight grooves 27 are provided on the outer surface of the insertion rod 24. The second thread groove 26 is located between the two third straight grooves 27, and the second thread groove 26 is connected to the inside of the third straight groove 27. The second thread groove 26 and the third straight groove 27 are both slidably matched with the second protrusion 25; a push plate 28 is coaxially rotatably connected to the insertion rod 24 between the sleeve 13 and the driving plate 20, and a first spring 29 is installed between the sleeve 13 and the push plate 28; when the insertion rod 24 is inserted into the sleeve 13, when the second protrusion 25 enters the second thread groove 26, the sleeve 13 is driven to rotate.

[0041] like Figure 3 , Figure 7 and Figure 8As shown, a locking component is provided on the first annular plate 10, and the locking component is used to limit the position of the second annular plate 11 and the third annular plate 12, and the driving component is drivingly connected to the locking component; the locking component includes a sleeve rod 30 fixed on the first annular plate 10, and a slider 31 is slidably matched in the sleeve rod 30, and a positioning rod 32 is fixedly connected to the side of the slider 31 close to the push plate 28, and the other end of the positioning rod 32 passes through the sleeve rod 30, and a limiting block 33 is fixedly connected to the positioning rod 32 located outside the sleeve rod 30, and a slope is provided on one side of the limiting block 33, and an arcuate ratchet bar 34 is fixedly connected to the second annular plate 11 and the third annular plate 12, and the two arcuate ratchet bars 34 are both engaged with the limiting block 33, and the arcuate ratchet bar 34 is sleeved by the inclined surface provided on the limiting block 33. The cylinder 13 is an axis and can only rotate in one direction; a second spring 35 is sleeved on the positioning rod 32 in the sleeve rod 30; in the initial state, the limit block 33 is in an interlocking state with the limit block 33, and the second annular plate 11 and the third annular plate 12 rotate to make the inner clamping block 7 and the outer clamping block 16 press against the cylindrical object during movement. At this time, the limit block 33 will not block the rotation of the arc-shaped ratchet bar 34, that is, it will not limit the rotation of the second annular plate 11 and the third annular plate 12; when any one of the second annular plate 11 and the third annular plate 12 stops rotating (that is, the inner clamping block 7 presses against the inner wall of the cylindrical object or the outer clamping block 16 presses against the outer wall of the cylindrical object), the setting of the limit block 33 can lock the position after the rotation is terminated, that is, the position of the inner clamping block 7 or the outer clamping block 16 is locked.

[0042] like Figure 7-Figure 9 As shown, a positioning frame 36 is fixedly connected to the push plate 28, and a guide hole is opened on the positioning frame 36. One end of the positioning rod 32 passes through the sleeve rod 30 and is slidably connected with the inner wall of the guide hole; an elastic stopper 37 is fixedly connected to the positioning rod 32 between the push plate 28 and the sleeve rod 30, and the inner diameter of the guide hole is smaller than the outer diameter of the elastic stopper 37.

[0043] During the process of inserting the insertion rod 24 into the sleeve 13, the push plate 28 and the positioning frame 36 move synchronously with the insertion rod 24. When the insertion rod 24 is inserted into the sleeve 13 to the limit, the guide hole passes over the elastic stop block 37 and reaches the positioning rod 32 between the elastic stop block 37 and the limit block 33; when the insertion rod 24 is pulled out from the sleeve 13, since the inner diameter of the guide hole is smaller than the outer diameter of the elastic stop block 37, the positioning frame 36 presses against the elastic stop block 37 to pull the positioning rod 32 out of the sleeve rod 30, and the arc ratchet bar 34 disengages from the limit block 33.

[0044] like Figure 2 As shown, rollers 38 are provided on the inner panel 2 and the driving plate 20 . The provision of the rollers 38 improves the stability of the movement of the inner panel 2 and the driving plate 20 .

[0045] When the device is used, the position of the lifting frame 1 is adjusted by using the crane body 39, and the two inner panels 2 are made to correspond to the two ends of the cylinder, and then the motor 22 is started to rotate forward, the rotating rod 21 rotates forward and drives the two driving plates 20 to move closer to each other, the insertion rod 24 brings the push plate 28 to move synchronously with the driving plate 20, and is supported by the first spring 29 (the first spring 29 is not deformed at this time), and the sleeve 13 brings the inner panel 2 to move close to the end of the cylinder, so that the inner clamping block 7 enters the inside of the cylinder, and the outer clamping block 16 is located outside the cylinder; after the inner panel 2 moves to contact the end of the cylinder, the inner panel 2 can no longer move, but the insertion rod 24 continues to move, the push plate 28 overcomes the resistance of the first spring 29 (the first spring 29 is compressed and deformed), and the insertion rod 24 is inserted into the sleeve 13. When the insertion rod 24 moves to the second protrusion 25 and enters the second thread groove 26, the sleeve 13 rotates.

[0046] When the sleeve 13 rotates, the elastic clamping block 40 presses against the inner wall of the clamping groove and causes the second annular plate 11 and the third annular plate 12 to rotate synchronously, the middle panel 5 and the outer panel 8 rotate, the inner clamping block 7 moves in the direction away from the axis of the inner panel 2, and the inner clamping block 7 presses the cylindrical object from the inside, and the outer clamping block 16 moves in the direction close to the axis of the inner panel 2, and the outer clamping block 16 presses the cylindrical object from the outside, so that the device fixes the cylindrical object in a manner of simultaneously pressing inside and outside, and its fixing stability is relatively high; the device uses a motor 22 to realize the clamping of the cylindrical object by the inner clamping block 7 and the outer clamping block 16 and the linear movement of the inner panel 2, and has high practicality and energy saving.

[0047] It should be noted that the movement distance of the inner clamping block 7 and the outer clamping block 16 will change due to the different inner diameters and thicknesses of the cylindrical object; for example, when clamping a cylindrical object with a small inner diameter and a small thickness, the sleeve 13 rotates to rotate the middle panel 5 and the outer panel 8, and the inner clamping block 7 moves away from the axis of the inner panel 2, while the outer clamping block 16 moves close to the axis of the inner panel 2. Due to the small inner diameter, the inner clamping block 7 first presses against the inner wall of the cylindrical object. At this time, the inner clamping block 7 can no longer move, that is, the middle panel 5 can no longer rotate. When the sleeve 13 continues to rotate, the groove on the second annular plate 11 is disengaged from the corresponding elastic block 40, and then, when the sleeve 13 continues to rotate, only the outer clamping block 16 will continue to move until the outer clamping block 16 presses against the outer wall of the cylindrical object; the present device can automatically adjust the movement distance of the inner clamping block 7 and the outer clamping block 16 according to the different inner diameters and thicknesses of the cylindrical object.

[0048] It is worth mentioning that, in the initial state, the limit block 33 and the arc-shaped ratchet bar 34 are in an interlocking state. During the movement of the second annular plate 11 and the third annular plate 12, the limit block 33 will not block the rotation of the arc-shaped ratchet bar 34, that is, it will not limit the rotation of the second annular plate 11 and the third annular plate 12; when the rotation of any one of the second annular plate 11 and the third annular plate 12 is terminated (that is, the inner clamping block 7 is pressed against the inner wall of the cylinder or the outer clamping block 16 is pressed against the outer wall of the cylinder), the limit block 33 is set to lock the position after the rotation is terminated, that is, the position of the inner clamping block 7 or the outer clamping block 16 is locked.

[0049] The insertion rod 24 continues to be inserted into the sleeve 13 and moves to make the second protrusion 25 enter the third straight slide groove 27. When the insertion rod 24 is inserted into the sleeve 13 to the limit, the guide hole passes over the elastic stop block 37 and reaches the positioning rod 32 between the elastic stop block 37 and the limit block 33.

[0050] Then the device lifts the cylindrical object through the crane body 39 . After the lifting is completed, the motor 22 is started to rotate in the reverse direction, so that the two drive plates 20 move away from each other, and the insertion rod 24 moves in the reverse direction and is pulled out of the sleeve 13 .

[0051] At the initial stage of the reverse movement of the insertion rod 24, since the second protrusion 25 is located in the third straight slide groove 27 at this time, the second annular plate 11 and the third annular plate 12 will not rotate when the insertion rod 24 moves in the reverse direction, but the reverse movement of the insertion rod 24 will cause the positioning frame 36 to move against the elastic stop block 37, and the positioning rod 32 is pulled out from the sleeve rod 30 so that the two arc-shaped ratchet bars 34 are disengaged from the limit block 33 (at the same time, the second spring 35 is compressed and stored), thereby releasing the lock on the second annular plate 11 and the third annular plate 12.

[0052] Then, when the insertion rod 24 moves in the opposite direction until the second protrusion 25 enters the second threaded groove 26, the sleeve 13 rotates in the opposite direction, and the elastic block 40 re-engages with the groove. In addition, the elastic block 40 presses against the inner wall of the groove to rotate the middle panel 5 and the outer panel 8 in the opposite direction, and the inner clamping block 7 and the outer clamping block 16 are both reset, thereby releasing the fixation of the cylindrical object.

[0053] When the insertion rod 24 moves in the reverse direction to pull the positioning rod 32 out of the sleeve rod 30, the resistance to the movement of the positioning rod 32 gradually increases due to the compression of the second spring 35. When the insertion rod 24 moves in the reverse direction to the point where the inner clamping block 7 and the outer clamping block 16 are reset, the resistance to the movement of the positioning rod 32 increases until the push plate 28 squeezes the elastic stopper 37 to deform, and the deformed elastic stopper 37 can pass through the guide hole. The second spring 35 releases its force to expand and press against the slider 31, causing the positioning rod 32 to be retracted into the sleeve rod 30, that is, the limit block 33 is automatically reset and re-engaged with the arc-shaped ratchet bar 34.

[0054] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An environmentally friendly bridge crane, comprising a lifting frame (1) and two clamping mechanisms arranged on the lifting frame (1), characterized in that: The two clamping mechanisms are arranged opposite to each other, and the clamping mechanisms include an inner panel (2), the inner panel (2) is provided with a plurality of first arc-shaped sliding grooves (3) and second arc-shaped sliding grooves (4), and the first arc-shaped sliding grooves (3) and the second arc-shaped sliding grooves (4) are arranged opposite to each other; a middle panel (5) is rotatably connected to the side of the two inner panels (2) away from each other, the middle panel (5) is provided with a plurality of first straight sliding grooves (6), an inner clamping member is slidably matched on the first arc-shaped sliding grooves (3), and the first straight sliding grooves (6) are slidably matched with the inner clamping member; an outer panel (8) is rotatably connected to the side of the middle panel (5) away from the inner panel (2), the outer panel (8) is provided with a plurality of second straight sliding grooves (9), an outer clamping member is slidably matched on the second arc-shaped sliding grooves (4), and the outer clamping member is slidably matched with the second straight sliding grooves (9); The inner panel (2), the middle panel (5) and the outer panel (8) are all arranged in an annular shape; the inner walls of the inner panel (2), the middle panel (5) and the outer panel (8) are respectively coaxially fixedly connected with a first annular plate (10), a second annular plate (11) and a third annular plate (12); a sleeve (13) is coaxially rotatably connected inside the first annular plate (10); the sleeve (13) coaxially penetrates the second annular plate (11) and the third annular plate (12); an elastic clamping block (40) is fixedly connected to the outer surface of the sleeve (13); the inner walls of the second annular plate (11) and the third annular plate (12) are both provided with clamping grooves matching the elastic clamping block (40); a locking component is provided on the first annular plate (10); the locking component is used to limit the positions of the second annular plate (11) and the third annular plate (12); The lifting frame (1) is provided with a driving component, the driving component is drivingly connected to the sleeve (13), and the driving component is drivingly connected to the locking component.

2. The environmentally friendly bridge crane according to claim 1, characterized in that: The inner clamping member comprises an inner clamping block (7), the inner clamping block (7) is provided with a connecting rod, one end of the connecting rod passing through the first arc-shaped slide groove (3) is fixedly connected to a first guide block (14), and the first straight slide groove (6) is slidably matched with the first guide block (14); the connecting rod located on the first arc-shaped slide groove (3) is fixedly connected to a second guide block (15), and the first arc-shaped slide groove (3) is slidably matched with the second guide block (15).

3. The environmentally friendly bridge crane according to claim 1, characterized in that: The outer clamping member comprises an outer clamping block (16), to which a U-shaped rod (17) and a third guide block (18) are fixedly connected, the other end of the U-shaped rod (17) is inserted into the second straight slide groove (9) and can slide in the second straight slide groove (9), and the second arc-shaped slide groove (4) is slidably matched with the third guide block (18).

4. The environmentally friendly bridge crane according to claim 1, characterized in that: The driving component comprises a rotating rod (21) rotatably arranged on the lifting frame (1), the rotating rod (21) being provided with two first spiral grooves, the two first spiral grooves being arranged in opposite directions, and a motor (22) being mounted on the lifting frame (1), the output end of the motor (22) being coaxially fixedly connected to the rotating rod (21).

5. The environmentally friendly bridge crane according to claim 4, characterized in that: The lifting frame (1) is provided with a guide groove (19) matching the first spiral groove, the guide groove (19) is slidably matched with a driving plate (20), the driving plate (20) is provided with a through hole, the rotating rod (21) passes through the through hole, the inner wall of the through hole is fixedly connected with a first protrusion (23), and the outer surface of the first protrusion (23) is slidably matched with the inner wall of the first spiral groove.

6. The environmentally friendly bridge crane according to claim 5, characterized in that: The two drive plates (20) are fixedly connected to a plug rod (24) on one side close to each other, the other end of the plug rod (24) is inserted into the interior of the sleeve (13), and a second protrusion (25) is fixedly connected to the inner wall of the sleeve (13). A second thread groove (26) and two third straight grooves (27) are provided on the outer surface of the plug rod (24), the second thread groove (26) is located between the two third straight grooves (27), and the second thread groove (26) is connected to the inside of the third straight groove (27), and the second thread groove (26) and the third straight groove (27) are both slidably matched with the second protrusion (25).

7. The environmentally friendly bridge crane according to claim 6, characterized in that: A push plate (28) is coaxially rotatably connected to the insertion rod (24) between the sleeve (13) and the drive plate (20), and a first spring (29) is installed between the sleeve (13) and the push plate (28).

8. The environmentally friendly bridge crane according to claim 7, characterized in that: The locking component comprises a sleeve rod (30) fixed on the first annular plate (10), a slider (31) slidably fitted inside the sleeve rod (30), a positioning rod (32) fixedly connected to one side of the slider (31) close to the push plate (28), the other end of the positioning rod (32) passing through the sleeve rod (30), a limiting block (33) fixedly connected to the positioning rod (32) outside the sleeve rod (30), one side of the limiting block (33) being provided with an inclined surface, an arcuate ratchet bar (34) fixedly connected to the second annular plate (11) and the third annular plate (12), the two arcuate ratchet bars (34) being engaged with the limiting block (33), and a second spring (35) sleeved on the positioning rod (32) inside the sleeve rod (30).

9. The environmentally friendly bridge crane according to claim 8, characterized in that: A positioning frame (36) is fixedly connected to the push plate (28), a guide hole is formed on the positioning frame (36), and one end of the positioning rod (32) passes through the sleeve rod (30) and is slidably connected to the inner wall of the guide hole; an elastic stopper (37) is fixedly connected to the positioning rod (32) between the push plate (28) and the sleeve rod (30).

10. The environmentally friendly bridge crane according to claim 5, characterized in that: Rollers (38) are provided on both the inner panel (2) and the drive plate (20).

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