Positioning and locking device for combined crane

Abstract

The utility model discloses a positioning and locking device for a combined crane, which comprises a monorail trolley connecting mechanism and a single beam connecting mechanism, and the monorail trolley connecting mechanism comprises an end beam body and a walking block in threaded connection with the upper surface of the end beam body. The guide groove is in threaded connection with the side surface of the end beam body, the positioning groove is in threaded connection with the lower surface of the end beam body, a positioning pin hole is formed in one side of the positioning groove, and a locking assembly is arranged on the side, close to the positioning pin hole, of the positioning groove. The guide wheel is in threaded connection with the lower surface of the cross beam body, the lug is in threaded connection with the upper surface of the cross beam body, a lug pin hole is formed in the lug, and the locking assembly is communicated with the lug pin hole through a positioning pin hole and used for locking the monorail trolley connecting mechanism and the single beam connecting mechanism. And the locking success rate is high.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a positioning and locking device for a modular crane. Background Art

[0002] A crane is a multi-action lifting machine capable of vertically lifting and horizontally transporting heavy objects within a certain range. It is categorized into gantry cranes, bridge cranes, tower cranes, and others. Gantry cranes offer advantages such as wide applicability and a large operating range. However, the main beam and single beams of a gantry crane are welded together. In some special operating environments, where the single beams need to be disassembled and assembled, a modular crane is required.

[0003] During the process of disassembling and assembling the single beam of a modular crane, the single beam will shake and cannot be accurately positioned. The positioning operation is more complicated, and the alignment of the main beam and the single beam is more difficult. After assembly, it is impossible to determine whether the main beam and the single beam are successfully locked, which poses a safety hazard. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a positioning and locking device for a modular crane, which has the advantages of stable and accurate positioning, precise judgment of the locking state, and a high locking success rate.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A positioning locking device for a modular crane comprises a monorail trolley connecting mechanism and a single beam connecting mechanism;

[0007] The monorail trolley connection mechanism includes an end beam, a walking block threadedly connected to the upper surface of the end beam, a guide groove threadedly connected to the side surface of the end beam, and a positioning groove threadedly connected to the lower surface of the end beam. A positioning pin hole is provided on one side of the positioning groove, and a locking assembly is provided on the side of the positioning groove adjacent to the positioning pin hole.

[0008] The single-beam connection mechanism includes a crossbeam body, a guide wheel threadedly connected to the lower surface of the crossbeam body, and an ear piece threadedly connected to the upper surface of the crossbeam body. An ear piece pin hole is provided on the ear piece, and the locking assembly is connected to the ear piece pin hole through the positioning pin hole to lock the monorail trolley connection mechanism and the single-beam connection mechanism.

[0009] Furthermore, the locking assembly includes a tail pin seat, an electric push rod fixedly connected to the tail pin seat, and a telescopic rod extending from the electric push rod. A first support frame and a second support frame are set on the upper and lower inner walls of the locking assembly. The electric push rod is fixed through the first support frame, and the telescopic rod can slide in the second support frame. The sliding direction is perpendicular to the extension direction of the second support frame. The telescopic rod is fixedly connected to a stop block in the direction away from the tail pin seat, and a locking pin shaft is fixedly set in the direction away from the tail pin seat. The locking pin shaft is used to insert into the positioning pin hole and the ear pin hole.

[0010] Furthermore, the locking assembly also includes a travel seat arranged on the upper inner wall of the locking assembly, a travel switch connected to the travel seat pin shaft, a slide rail fixed to the bottom inner wall of the locking assembly, and a slider fixed to the bottom side of the locking pin shaft, and the slider can slide on the slide rail along the extension direction of the telescopic rod.

[0011] Furthermore, a micro switch is provided at the upper end of the positioning slot to determine whether the locking pin is accurately inserted into the pin hole of the ear piece.

[0012] Furthermore, the monorail trolley connection mechanism also includes a drum and an electric control system for controlling the drum, and a hoisting assembly is arranged under the drum.

[0013] Furthermore, the lifting assembly includes a lifting ring, a lifting rope is arranged between the lifting ring and the drum, a pin block is fixedly arranged at the bottom of the lifting ring, and a lifting pin hole is provided on the pin block.

[0014] Furthermore, a pin groove is provided on the beam body, and a beam pin hole is provided in the pin groove perpendicular to the direction in which the beam body extends. The beam pin shaft is inserted into the beam pin hole to connect the single beam connection mechanism and the lifting assembly.

[0015] Furthermore, a walking drive is provided on the walking block.

[0016] Furthermore, an alignment module is provided on the travel drive.

[0017] Furthermore, the guide groove is a trapezoidal groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The trapezoidal guide groove and guide wheel are provided to solve the problem of easy swing of the single beam assembly during assembly, and the positioning is stable and accurate.

[0020] 2. By setting the positioning groove, lug and locking assembly, the problem of inaccurate positioning device of modular crane and inability to accurately judge whether positioning is successful is solved. It has the advantages of accurate positioning and accurate judgment of whether positioning is accurate;

[0021] 3. By setting a travel switch, the problem of being unable to determine the position of the locking pin is solved, and it has the advantage of accurately judging the locking state;

[0022] 4. By setting a micro switch in the positioning groove, the problem of being unable to determine whether the locking pin is inserted into the ear pin hole after insertion is solved. It has the advantage of further determining whether the locking is successful and avoiding accidental injury.

[0023] 5. By setting up an alignment module, the problem of locking failure of the locking devices at both ends due to misalignment during disassembly and assembly of a single beam assembly is solved. It has the advantages of accurate alignment and high locking success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model after assembly;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model before assembly;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the back side of the utility model before and after assembly;

[0027] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the locking component before assembly of the utility model;

[0028] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the locking component after assembly of the utility model;

[0029] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the positioning groove after assembly of the utility model;

[0030] In the figure: 100, monorail trolley connection mechanism; 110, end beam; 120, walking block; 130, guide groove; 140, positioning groove; 141, positioning pin hole; 142, micro switch; 150, locking assembly; 151, tail pin seat; 152, electric push rod; 153, telescopic rod; 154, first support frame; 155, second support frame; 156, stop block; 157, locking pin shaft; 1571, slider; 1572, slide rail; 158 , travel seat; 159, travel switch; 160, reel; 170, electronic control system; 180, lifting assembly; 181, lifting ring; 182, lifting rope; 183, pin block; 184, lifting pin hole; 190, travel drive; 191, alignment module; 200, single beam connection mechanism; 210, crossbeam body; 220, guide wheel; 230, ear; 231, ear pin hole; 240, pin groove; 250, crossbeam pin hole; 260, crossbeam pin shaft. DETAILED DESCRIPTION

[0031] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-6 , this embodiment provides a positioning locking device for a modular crane, comprising a monorail trolley connecting mechanism 100 and a single beam connecting mechanism 200;

[0033] The monorail trolley connection mechanism 100 includes an end beam 110, a walking block 120 threadedly connected to the upper surface of the end beam 110, and the walking block 120 can be set on the two main beams of the modular crane and can slide on the main beams. There are also guide grooves 130 threadedly connected to the side surfaces of the end beam 110 and positioning grooves 140 threadedly connected to the lower surface of the end beam 110. The positioning grooves 140 are hollow structures with an open lower end. A positioning pin hole 141 is provided on one side of the positioning groove 140, and a locking assembly 150 is provided on the side of the positioning groove 140 near the positioning pin hole 141.

[0034] The single-beam connection mechanism 200 includes a crossbeam body 210, which can be vertically connected to the single beam of the modular crane, a guide wheel 220 threadedly connected to the lower surface of the crossbeam body 210, and an ear piece 230 threadedly connected to the upper surface of the crossbeam body 210. An ear piece pin hole 231 is provided on the ear piece 230, and the locking assembly 150 is connected to the ear piece pin hole 231 through the positioning pin hole 141, which is used to lock the monorail trolley connection mechanism 100 and the single-beam connection mechanism 200. During the rising process of the single beam, when the guide wheel 220 rises to the position of the lower end of the guide groove 130, the guide wheel 220 rolls into the guide groove 130. Since the guide groove 130 is fixed, the guide groove 130 limits the single-beam connection mechanism 200 from moving in the direction along the extension line of the single beam, thereby reducing the shaking of the single beam during disassembly and assembly.

[0035] In this embodiment, the locking assembly 150 includes a tail pin seat 151, which is fixed to the bottom wall of the locking assembly 150 and plays a fixing role. The tail pin seat 151 is fixedly connected to the electric push rod 152 and the telescopic rod 153 extending from the electric push rod 152. The upper and lower inner walls of the locking assembly 150 are provided with a first support frame 154 and a second support frame 155. The electric push rod 152 is fixed through the first support frame 154, and the telescopic rod 153 can slide in the second support frame 155. The sliding direction Perpendicular to the extension direction of the second support frame 155, the telescopic rod 153 is fixedly connected to the stop block 156 in the direction away from the tail pin seat 151, and the stop block 156 is fixedly provided with a locking pin shaft 157 in the direction away from the tail pin seat 151. The locking pin shaft 157 is used to insert the positioning pin hole 141 and the ear pin hole 231. Under the action of the electric push rod 152, the telescopic rod 153 can be extended and retracted on the second support frame 155, thereby driving the stop block 156 and the locking pin shaft 157 to move in the direction of extension and retraction along the telescopic rod 153.

[0036] In this embodiment, the locking assembly 150 also includes a travel seat 158 ​​arranged on the inner wall of the upper side of the locking assembly 150, a travel switch 159 connected to the pin of the travel seat 158, and a slide rail 1572 fixed to the inner wall of the bottom side of the locking assembly 150. The slide rail 1572 is used to prevent the extension shaft of the telescopic rod 153 from rotating during the extension process. A slider 1571 is also fixed on the bottom side of the locking pin 157. The slider 1571 can slide on the slide rail 1572 in the direction of extension of the telescopic rod 153. When the positioning pin hole 141 is not inserted, the travel switch 159 is in a vertical direction. When the locking pin 157 is inserted into the positioning pin hole 141, the locking pin 157 slides on the slide rail 1572 with the slider 1571 in the direction of the slide rail 1572. Under the limiting action of the block 156, the travel switch 159 forms a certain angle with the locking pin 157. The travel switch 159 is used to judge the extension and retraction status of the locking pin 157.

[0037] In this embodiment, a micro switch 142 is provided at the upper end of the positioning slot 140 to determine whether the locking pin 157 is accurately inserted into the ear pin hole 231. The micro switch 142 cooperates with the ear 230 to determine whether the ear pin hole 231 on the ear 230 is concentric with the locking pin 157, thereby determining whether the locking pin 157 is allowed to extend or retract.

[0038] In this embodiment, the monorail trolley connection mechanism 100 also includes a drum 160 and an electronic control system 170 for controlling the drum 160. A hoisting assembly 180 is arranged under the drum 160. When a single beam is not provided, the drum 160 retracts and extends the hoisting assembly 180 under the control of the electronic control system 170. The monorail trolley connection mechanism 100 can be used as a monorail trolley of a monorail crane.

[0039] In this embodiment, the lifting assembly 180 includes a lifting ring 181, a lifting rope 182 is arranged between the lifting ring 181 and the drum 160, a pin block 183 is fixedly arranged at the bottom of the lifting ring 181, and a lifting pin hole 184 is provided on the pin block 183. When the monorail trolley connection mechanism 100 can be used as a monorail trolley of a monorail crane, the pin block 183 is used to connect objects that need to be lifted or lowered. When used in a modular crane, the pin block 183 is used to connect the single beam connection mechanism 200.

[0040] In this embodiment, a pin groove 240 is provided on the beam body 210, and a beam pin hole 250 is provided in the pin groove 240 perpendicular to the extension direction of the beam body 210. A beam pin shaft 260 is inserted into the beam pin hole 250 to connect the single beam connection mechanism 200 and the lifting assembly 180.

[0041] In this embodiment, a travel drive 190 is provided on the travel block 120 . Under the action of the travel drive 190 , the travel block 120 can drive the monorail trolley connection mechanism 100 to move on the main beam.

[0042] In this embodiment, an alignment module 191 is provided on the travel drive 190 , and the alignment module 191 is used to align the monorail trolley connection mechanisms 100 on the two main beams.

[0043] In this embodiment, the guide groove 130 is a trapezoidal groove, which allows the guide wheel 220 to first enter a wider groove body when entering the guide groove 130. During the slow upward process, the groove body becomes narrower, which has the effect of fine-tuning the position of the single beam.

[0044] When disassembling and assembling a single beam of a modular crane, the operating steps of the positioning locking device are as follows:

[0045] When the operator starts to assemble the single beam, the drum 160 releases the lifting rope 182 first, and the lifting components 180 on both sides of the main beam begin to descend. When the lifting components 180 descend to the position adapted to the single beam connection mechanism 200, the alignment module 191 will issue a command, the drum 160 stops releasing the lifting rope 182, and the single beam connection mechanism 200 uses the crossbeam pin 260 to insert the crossbeam pin hole 250 and the lifting pin hole 184 to connect with the lifting component 180 of the monorail trolley connection mechanism 100, and then the drum 160 starts to retract the lifting rope 182. When the position of the guide wheel 220 reaches the height of the guide groove 130, the guide wheel 220 enters the guide groove 130 and rolls. The lower end of the guide groove 130 is wider and the upper end is narrower. The position of the guide wheel 220 can be fine-tuned, and the guide groove 130 limits the single beam connection mechanism 200 from shaking. It continues to rise, and the ear piece 2 30 is inserted into the positioning slot 140. When the ear piece 230 reaches the top of the positioning slot 140, the travel switch 159 in the locking assembly 150 and the micro switch 142 in the positioning slot 140 will be triggered. After being triggered, the reel 160 will stop working, the lifting rope 182 will stop lifting, and the electric push rod 152 will push the telescopic rod 153 to move toward the positioning slot 140, driving the locking pin 157 to insert into the positioning pin hole 141 and penetrate into the ear piece pin hole 231 for locking. At this time, the single-beam connection mechanism 200 leads the single beam to stop at a fixed height, and the ear piece 230 and the locking pin 157 are in a concentric state. After the single beam is stable, the system determines that the locking is successful, and the reel 160 will release a small section of the lifting rope 182 to completely release the weight of the single beam to the positioning locking device of the main beam. The locking is successful. When it needs to be disassembled, the above steps can be reversed to complete the disassembly.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A positioning locking device for a modular crane, characterized in that: It comprises a monorail trolley connection mechanism (100) and a single beam connection mechanism (200); The monorail trolley connection mechanism (100) comprises an end beam body (110), a walking block (120) threadedly connected to the upper surface of the end beam body (110), a guide groove (130) threadedly connected to the side surface of the end beam body (110), and a positioning groove (140) threadedly connected to the lower surface of the end beam body (110), a positioning pin hole (141) is provided on one side of the positioning groove (140), and a locking assembly (150) is provided on the side of the positioning groove (140) close to the positioning pin hole (141); The single-beam connection mechanism (200) comprises a crossbeam body (210), a guide wheel (220) threadedly connected to the lower surface of the crossbeam body (210), and an ear piece (230) threadedly connected to the upper surface of the crossbeam body (210). The ear piece (230) is provided with an ear piece pin hole (231). The locking assembly (150) is connected to the ear piece pin hole (231) through a positioning pin hole (141) and is used to lock the monorail trolley connection mechanism (100) and the single-beam connection mechanism (200).

2. A positioning locking device for a modular crane according to claim 1, characterized in that: The locking assembly (150) comprises a tail pin seat (151), an electric push rod (152) fixedly connected to the tail pin seat (151), and a telescopic rod (153) extending from the electric push rod (152). The upper and lower inner walls of the locking assembly (150) are provided with a first support frame (154) and a second support frame (155). The electric push rod (152) is fixedly passed through the first support frame (154). The telescopic rod (153) can slide in the second support frame (155), and the sliding direction is perpendicular to the extension direction of the second support frame (155). The telescopic rod (153) is fixedly connected to a stopper (156) in a direction away from the tail pin seat (151). The stopper (156) is fixedly provided with a locking pin shaft (157) in a direction away from the tail pin seat (151). The locking pin shaft (157) is used to be inserted into the positioning pin hole (141) and the ear pin hole (231).

3. A positioning locking device for a modular crane according to claim 2, characterized in that: The locking assembly (150) further comprises a travel seat (158) arranged on the upper inner wall of the locking assembly (150), a travel switch (159) connected to the pin of the travel seat (158), a slide rail (1572) fixedly arranged on the inner wall of the bottom side of the locking assembly (150), and a slider (1571) fixedly arranged on the bottom side of the locking pin (157). The slider (1571) can slide on the slide rail (1572) along the direction in which the telescopic rod (153) extends.

4. A positioning locking device for a modular crane according to claim 3, characterized in that: A micro switch (142) is provided at the upper end of the positioning slot (140) for judging whether the locking pin shaft (157) is accurately inserted into the ear pin hole (231).

5. The positioning locking device for a modular crane according to claim 1, characterized in that: The monorail trolley connection mechanism (100) further comprises a reel (160) and an electric control system (170) for controlling the reel (160); a hoisting assembly (180) is provided under the reel (160).

6. A positioning locking device for a modular crane according to claim 5, characterized in that: The hoisting assembly (180) comprises a hoisting ring (181), a hoisting rope (182) is arranged between the hoisting ring (181) and the reel (160), a pin block (183) is fixedly arranged at the bottom of the hoisting ring (181), and a hoisting pin hole (184) is provided on the pin block (183).

7. The positioning locking device for a modular crane according to claim 1, characterized in that: A pin groove (240) is provided on the crossbeam body (210), a crossbeam pin hole (250) is provided in the pin groove (240) and is perpendicular to the extending direction of the crossbeam body (210), and a crossbeam pin shaft (260) is inserted into the crossbeam pin hole (250) to connect the single beam connection mechanism (200) and the hoisting assembly (180).

8. The positioning locking device for a modular crane according to claim 1, characterized in that: The walking block (120) is provided with a walking drive (190).

9. The positioning locking device for a modular crane according to claim 8, characterized in that: An alignment module (191) is provided on the travel drive (190).

10. The positioning locking device for a modular crane according to claim 1, characterized in that: The guide groove (130) is a trapezoidal groove.

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