A hoist connecting pin shaft automatic insertion device

Abstract

The present application relates to the technical field of automation, and especially relates to a gate hoist connecting pin shaft automatic insertion equipment. The equipment comprises a fixed pier, the fixed pier is provided with a crane head, the fixed pier is slidably connected with symmetrically distributed moving trolleys, the symmetrically distributed moving trolleys are respectively used for supporting corresponding lifting lugs, the fixed pier is installed with a first electric sliding rail and a second electric sliding rail, the first electric sliding rail and the second electric sliding rail are respectively slidably connected with a first electric sliding block and a second electric sliding block, the first electric sliding block and the second electric sliding block are respectively installed with a first hydraulic push rod and a second hydraulic push rod, the first hydraulic push rod is fixedly connected with a positioning cylinder at an extension end, and the positioning cylinder is used for positioning a pull rod. The present application inserts the positioning cylinder into the lifting lug, realizes the pre-positioning of the inserted pin shaft, and then cooperatively completes the automatic pin insertion by the electric sliding rail and the hydraulic push rod, so that the pin hole alignment accuracy and the pin insertion operation efficiency are effectively improved, and the operation safety risk is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of automation technology, and in particular to an automatic insertion device for a gate hoist connecting pin. Background Technology

[0002] In large-scale water conservancy projects, the gate hoist is the core equipment for controlling the opening and closing of the gates. Its power is usually transmitted through multiple sections of tie rods connected in series, and the tie rods are hinged together by lifting lugs and pins. When installing the gate or replacing components, the upper tie rod needs to be hoisted above the lower tie rod to ensure that the pin holes on the corresponding sides of the two tie rods are precisely aligned, and then a large-diameter connecting pin is inserted.

[0003] The process described above, while seemingly simple, actually presents multiple technical challenges under actual working conditions. The installation of pins between the tie rod sections typically employs a manual operation mode in conjunction with the gantry crane: ground command personnel guide the gantry crane operator to repeatedly adjust the positions of the trolley and crane to achieve a rough alignment of the upper and lower tie rod lugs. Then, high-altitude operations are used to calibrate the coaxiality of the pin holes. Subsequently, the connecting pin, weighing hundreds of kilograms, is inserted and an anti-detachment structure is installed. The current operation is extremely inefficient. The complete opening and closing of a single gate requires more than ten tie rod splicing operations, and a single alignment and pin insertion can take several hours. The entire gate's closure period can take more than ten days, making it difficult to meet the timeliness requirements of pre-flood emergency maintenance. At the same time, the quality of pin insertion is unstable, and the coaxiality of the pin holes relies entirely on experience. Alignment deviations can easily lead to pin jamming and scratches on the inner wall of the pin holes. Long-term operation will exacerbate component wear and shorten the service life of the equipment. Summary of the Invention

[0004] To overcome the shortcomings mentioned in the background above, the present invention provides an automatic insertion device for the connecting pin of a gate hoist.

[0005] The technical solution is as follows: an automatic insertion device for a gate hoist connecting pin, comprising a fixed block, a crane head on the fixed block, and symmetrically distributed moving trolleys slidably connected to the fixed block. The symmetrically distributed moving trolleys are used to support corresponding lifting lugs. The fixed block is equipped with a first electric slide rail and a second electric slide rail. A first electric slider and a second electric slider are slidably connected to the first and second electric slide rails, respectively. A first hydraulic push rod and a second hydraulic push rod are respectively installed on the first and second electric sliders. A positioning cylinder is fixedly connected to the telescopic end of the first hydraulic push rod, and the positioning cylinder is used to position the pull rod. The telescopic end of the second hydraulic push rod is used to press the pin for movement. A fine-tuning component is provided on the crane head, and the fine-tuning component is used to drive the pull rod to move.

[0006] Furthermore, the fine-tuning component includes a drive frame, which is fixedly connected to the crane head. The drive frame is fixedly connected to a fixed rail, and the fixed rail is fixedly connected to symmetrically distributed third electric slide rails. The third electric slide rails are slidably connected to third electric sliders. The symmetrically distributed third electric sliders are jointly fixedly connected to a sliding plate. The sliding plate is ball-connected to a swing plate, and the swing plate is fixedly connected to a limiting shell. The limiting shell is used to drive the symmetrically distributed pull lugs to move.

[0007] Furthermore, the limiting shell has two inclined surfaces, and the distance between the two inclined surfaces of the limiting shell gradually decreases from the side closer to the sliding plate to the side farther away from the sliding plate. The two inclined surfaces of the limiting shell are used to guide the corresponding pull lugs.

[0008] Furthermore, the sliding plate is fixedly connected to a rectangularly distributed set of third hydraulic push rods, and each of the telescopic ends of the third hydraulic push rods is fixedly connected to a pull ring. The swing plate is fixedly connected to a rectangularly distributed set of hooks, and the pull rings at the telescopic ends of the third hydraulic push rods correspond one-to-one with the hooks of the swing plate. The pull rings at the telescopic ends of the third hydraulic push rods are connected in series with circular rings, which are used to hoist the corresponding hooks on the swing plate.

[0009] Furthermore, a counterweight is installed inside the fixed railing to improve its stability.

[0010] Furthermore, it also includes a sliding cylinder, which is slidably connected inside the positioning cylinder. A first elastic element is provided between the sliding cylinder and the positioning cylinder. The sliding cylinder is fixedly connected to several circumferentially distributed extrusion frames, each of which consists of several extrusion frames arranged in a linear array. The positioning cylinder is fixedly connected to several circumferentially distributed fixing frames, each of which consists of several fixing frames arranged in a linear array. The extrusion frames and fixing frames correspond one-to-one. The fixing frames are rotatably connected to a swing frame, which guides the corresponding extrusion frame to swing. The swing frame is rotatably connected to a roller, which supports the pin hole.

[0011] Furthermore, the limiting shell is provided with symmetrically distributed leaf springs, which are used to support the pull lugs.

[0012] Furthermore, it also includes a connecting frame, which is fixedly connected to the sliding cylinder and slidably connected to the positioning cylinder. A drive motor is fixedly connected to the connecting frame, and a rotating component is fixedly connected to the output shaft of the drive motor. The rotating component is slidably connected to the positioning cylinder, and a sliding column is slidably connected to the sliding cylinder. The rotating component is used to press the sliding column to move. A second elastic element is provided between the sliding cylinder and the sliding column, and the sliding column is used to press the pin.

[0013] Furthermore, both the rotating component and the sliding column are provided with arc-shaped surfaces.

[0014] Furthermore, the end of the sliding column away from the rotating member is provided with a corrugated annular surface.

[0015] The beneficial effects of this invention are as follows: This invention combines the insertion of the positioning cylinder into the lifting lug to achieve the pre-positioning of the insertion pin, and then the electric slide rail and hydraulic push rod work together to complete the automatic pin insertion, which effectively improves the pin hole alignment accuracy and pin insertion efficiency, and greatly reduces the safety risks of operation.

[0016] By using a fine-tuning component in conjunction with a limiting shell to restrict the pull rod, and adjusting the docking angle, the deflection angle of the tilting lug is matched during docking, making it easier to dock the pin holes on different pull rods and greatly improving the assembly efficiency of the pin shaft.

[0017] After the pin hole is positioned, the roller supports and positions the pin plate, and the leaf spring further supports and stabilizes the tie rod, effectively reducing residual swaying during hanging and the reaction force of pin insertion. At the same time, the reciprocating movement of the sliding column causes micro-vibration of the pin shaft itself, reducing the resistance to pin insertion and reducing rigid jamming and scratching between the pin shaft and the pin hole, further improving the smoothness of the pin insertion process and greatly reducing the assembly time of the pin shaft. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the first hydraulic push rod, the positioning cylinder, and the second hydraulic push rod of the present invention; Figure 3 This is a three-dimensional structural diagram of the connecting frame and drive motor of the present invention; Figure 4 This is a three-dimensional structural diagram of the crane head and drive frame of the present invention; Figure 5 This is a three-dimensional structural diagram of the third electric slide rail and sliding plate of the present invention; Figure 6 This is a three-dimensional structural diagram of the positioning cylinder and sliding cylinder of the present invention; Figure 7 In this invention Figure 6 A magnified three-dimensional structural diagram at point A; Figure 8 This is an exploded three-dimensional view of the fixed frame and the swing frame of the present invention; Figure 9 This is a three-dimensional structural diagram of the rotating component and sliding column of the present invention; Figure 10 This is a three-dimensional plan view of the extrusion frame, swing frame, and sliding column of the present invention.

[0019] Reference numerals: 1-Fixed pier, 2-Crane head, 3-Mobile trolley, 4-First electric slide rail, 41-First electric slider, 42-First hydraulic push rod, 43-Positioning cylinder, 5-Second electric slide rail, 51-Second electric slider, 52-Second hydraulic push rod, 201-Drive frame, 202-Fixed rail, 203-Third electric slide rail, 2031-Third electric slider, 204-Sliding plate, 205-Swing plate, 206-Limiting shell, 301-Third hydraulic push rod, 302-Ring, 401-Counterweight, 501-Sliding cylinder, 502-Extrusion frame, 503-Fixed frame, 504-Swing frame, 505-Roller, 601-Leaf spring, 701-Connecting frame, 702-Drive motor, 703-Rotating component, 704-Sliding column. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1: In the existing installation of the connecting pin of the gate rod, due to the low alignment accuracy of the pin hole and the difficulty of calibration, the pin insertion process is difficult and the work efficiency is low. It is easy for the pin to get stuck or the component to be scratched due to the misalignment of the connection.

[0022] An automatic insertion device for the connecting pin of a gate hoist, such as Figures 1-4 , Figure 6 , Figure 7 , Figure 9 and Figure 10 As shown, the system includes a fixed pier 1, a crane head 2, and symmetrically distributed moving trolleys 3 slidably connected to the fixed pier 1. The symmetrically distributed moving trolleys 3 are used to support the corresponding lifting lugs. The fixed pier 1 is equipped with a first electric slide rail 4 and a second electric slide rail 5. The first electric slide rail 4 and the second electric slide rail 5 are slidably connected to a first electric slider 41 and a second electric slider 51, respectively. The first electric slider 41 and the second electric slider 51 are respectively equipped with a first hydraulic push rod 42 and a second hydraulic push rod 52. The telescopic end of the first hydraulic push rod 42 is fixedly connected to a positioning cylinder 43, which is used to position the pull rod. The telescopic end of the second hydraulic push rod 52 is used to press the pin shaft to move. The crane head 2 is equipped with a fine-tuning component, which is used to drive the pull rod to move.

[0023] In the above scheme, the fixed pier 1 is installed on the traffic bridge above the gate. The fixed pier 1 has two symmetrically distributed tracks. Multiple steel wire ropes are wound around the crane head 2, and the steel wire ropes on the crane head 2 are connected to a crane. The moving trolley 3 has four rectangularly distributed sliding wheels. The second electric slide rail 5 and the first electric slide rail 4 are located on the left and right sides of the fixed pier 1, respectively. The upper side of the pull rod has two symmetrically distributed lifting lugs. The upper and lower sides of the pull rod have outer pin plates and inner pin plates, respectively. Both the outer and inner pin plates have pin holes, and the outer pin plate has two symmetrically distributed lifting lugs. Figure 2 The diagram shows the state where the pin hole of the outer pin plate on the lower pull rod coincides with the center axis of the pin hole of the inner pin plate on the upper pull rod. The pull rod is used to lift and lower the gate. The initial position of the first electric slider 41 is located at the rightmost side of the first electric slide rail 4, and the initial position of the second electric slider 51 is located at the leftmost side of the second electric slide rail 5. The diagram shows the state after the pin is assembled or when the pin is about to be pulled out. The positioning cylinder 43 has four circumferentially distributed through slots. A monitoring module is installed on the positioning cylinder 43. The monitoring module of the positioning cylinder 43 is used to monitor the state of the pin hole in real time. The second hydraulic push rod 52... The telescopic end is equipped with a clamping assembly. The clamping assembly at the telescopic end of the second hydraulic push rod 52 is an existing device and is not shown in the figure. The clamping assembly at the telescopic end of the second hydraulic push rod 52 is used to clamp the pin. The diameter of the positioning cylinder 43 is smaller than the diameter of the pin hole. It is used to perform coarse calibration of the pin hole of the outer pin plate and the pin hole of the inner pin plate. By inserting the positioning cylinder 43 into the two lifting lugs, the pin is pre-positioned. Then, the electric slide rail and the hydraulic push rod work together to complete the automatic pin insertion, which effectively improves the pin hole alignment accuracy and pin insertion efficiency. At the same time, it eliminates the need for manual on-site high-altitude operation and greatly reduces the safety risks of operation.

[0024] like Figure 1 , Figure 4 and Figure 5As shown, the fine-tuning assembly includes a drive frame 201, which is fixedly connected to the crane head 2. A fixed rail 202 is fixedly connected to the drive frame 201. Symmetrically distributed third electric slide rails 203 are fixedly connected to the fixed rails 202. Third electric sliders 2031 are slidably connected to the third electric slide rails 203. The symmetrically distributed third electric sliders 2031 are collectively fixedly connected to a sliding plate 204. A swing plate 205 is ball-connected to the sliding plate 204. A limiting shell 206 is fixedly connected to the swing plate 205. The limiting shell 206 is used to move symmetrically distributed pull lugs. The limiting shell 206 has two inclined surfaces, and the distance between the two inclined surfaces of the limiting shell 206 is determined by the side closer to the sliding plate 204. The size gradually decreases towards the side furthest from the sliding plate 204. The two inclined surfaces of the limiting shell 206 are used to guide the corresponding pull ears. The sliding plate 204 is fixedly connected to a rectangularly distributed set of third hydraulic push rods 301. All the telescopic ends of the third hydraulic push rods 301 are fixedly connected to pull rings. The swing plate 205 is fixedly connected to a rectangularly distributed set of hooks. The pull rings at the telescopic ends of the third hydraulic push rods 301 correspond one-to-one with the hooks of the swing plate 205. The pull rings at the telescopic ends of the third hydraulic push rods 301 are connected in series with a circular ring 302. The circular ring 302 is used to hoist the corresponding hooks on the swing plate 205. A counterweight 401 is installed inside the fixed railing 202. The counterweight 401 is used to improve the stability of the fixed railing 202.

[0025] In the above scheme, there are two third electric slide rails 203 on the left and right, the sliding plate 204 is located below the fixed rail 202, there are four third hydraulic push rods 301, and the front side of the limiting shell 206 has an opening for the lugs of the pull rod to enter. The opening section of the limiting shell 206 is composed of an upper isosceles trapezoid and a lower rectangle, and the left and right sides of the isosceles trapezoid of the opening of the limiting shell 206 correspond to the two inclined surfaces of the limiting shell 206. The limiting shell 206 is used to drive the two lugs of the pull rod to move. The telescopic end of the third hydraulic push rod 301 controls the movement of the swing plate 205 and the limiting shell 206 by telescopic movement to adjust the angle of the pull rod. When docking, it matches the deflection angle of the inclined pin plate, which makes it easier to dock the pin holes on different pull rod pin plates and greatly improves the assembly efficiency of the pin shaft.

[0026] Working principle: When using this device to lift and lower the gate, taking lowering as an example, the crane first moves the crane head 2 and its parts to the rear of the pull rod through the wire rope. When both pull lugs of the pull rod can enter through the opening of the limiting shell 206, the crane moves forward. Then, both pull lugs of the pull rod enter the limiting shell 206. After that, the crane moves upward, and the pull lugs of the pull rod are lifted by the limiting shell 206. The inner pin plate of the lifted pull rod is roughly aligned with the outer pin plate of the pull rod on the fixed block 1. The crane stops moving. When the crane drives the pull rod to move, the pull rod is in a near-vertical state due to the action of the counterweight 401, reducing the sway caused by the external environment or the wire rope.

[0027] After the inner and outer pin plates of the two pull rods are roughly aligned, the first electric slider 41 is activated. The first electric slider 41 drives the first hydraulic push rod 42 to move to the left. The telescopic end of the first hydraulic push rod 42 drives the positioning cylinder 43 to move together until it reaches the desired position. Figure 2 In the indicated state, the first electric slider 41 stops moving, and the first hydraulic push rod 42 is activated. The telescopic end of the first hydraulic push rod 42 drives the positioning cylinder 43 to move to the left. The positioning cylinder 43 gradually enters the pin holes of the outer pin plate of the lower pull rod and the inner pin plate of the upper pull rod. After the positioning cylinder 43 is fully inserted into the outer pin plate, the telescopic end of the first hydraulic push rod 42 stops moving. At this time, the monitoring module on the positioning cylinder 43 begins to monitor the alignment of the pin holes on the outer pin plate and the inner pin plate.

[0028] When the monitoring module detects a misalignment between the inner pin plate and the outer pin plate in the front-back direction, it activates two third electric sliders 2031. The two third electric sliders 2031 together drive the sliding plate 204 to move back and forth, completing the alignment of the pin hole on the outer pin plate of the pull rod with the pin hole on the inner pin plate of the pull rod.

[0029] When the monitoring module detects an angular deflection between the pin holes on the outer pin plate and the inner pin plate, taking the rearward offset of the inner pin plate as an example, all third hydraulic push rods 301 are activated. The telescopic ends of the first two third hydraulic push rods 301 move upward, and their telescopic ends drive the corresponding rings 302 to move together via pull rings. The first two rings 302 pull the hooks on the corresponding swing plates 205. At the same time, the telescopic ends of the last two third hydraulic push rods 301 move downward, and their telescopic ends drive the corresponding rings 302 to move together via pull rings. The two rings 302 at the rear release the hooks on the corresponding swing plate 205. During this process, the swing plate 205 swings forward, and the swing plate 205 drives the limiting shell 206 to move together. The limiting shell 206 drives the two pull ears of the upper pull rod to move together. The pin hole on the outer pin plate and the pin hole on the inner pin plate gradually become level with the horizontal axis. Until the monitoring module detects that the pin hole on the outer pin plate and the pin hole on the inner pin plate are level with the horizontal axis, the telescopic ends of all the third hydraulic push rods 301 stop moving. By adjusting the docking angle, the deflection angle of the tilting lugs is matched during docking, which makes it easier to dock the pin holes on different pull rods and greatly improves the assembly efficiency of the pin shaft.

[0030] After aligning the pin holes on the outer pin plate with the horizontal axis of the pin holes on the inner pin plate, the operator places the pin on the clamping assembly at the telescopic end of the second hydraulic push rod 52 and controls the clamping assembly at the telescopic end of the second hydraulic push rod 52 to fix the pin. Then, the second electric slider 51 is activated, which drives the second hydraulic push rod 52 to move to the right. The telescopic end of the second hydraulic push rod 52 drives the clamping assembly and the pin to move. As the second electric slider 51 moves, the right side of the pin contacts the left side of the positioning cylinder 43, and the second electric slider 51 stops moving. Then, the second hydraulic push rod 52 is activated, and the clamping assembly at the telescopic end of the second hydraulic push rod 52 drives the pin to move to the right. At the same time, the telescopic end of the first hydraulic push rod 42 moves to the right, and the telescopic end of the first hydraulic push rod 42 drives the positioning cylinder 43 to move together. As the pin and the positioning cylinder 43 move, the pin gradually enters the pin hole, and the positioning cylinder 43 gradually moves out of the pin hole.

[0031] When the pin reaches such Figure 2 In the indicated state, the pin is fully inserted into the pin hole, the telescopic end of the second hydraulic push rod 52 stops moving, the telescopic end of the first hydraulic push rod 42 continues to move to the right, the positioning cylinder 43 loses contact with the pin until the telescopic end of the first hydraulic push rod 42 is fully retracted, and the first hydraulic push rod 42 is closed. Then the first electric slider 41 moves to the right until it reaches its right limit position and is closed. At the same time, the clamping assembly of the telescopic end of the second hydraulic push rod 52 releases its clamp on the pin, and then the telescopic end of the second hydraulic push rod 52 moves to the left until it is fully retracted and is closed. The second electric slider 51 moves to the left until it reaches its left limit position and is closed.

[0032] After the first electric slider 41 and the second electric slider 51 are reset, the pin is inserted. The crane then moves upward, and the crane head 2 drives all its components upward. The limiting housing 206 drives the pull rod upward via two lugs until the two lugs on the lower pull rod lose contact with the corresponding moving trolleys 3. The crane head 2 then stops moving upward and starts the two moving trolleys 3, moving them in opposite directions until the distance between them is sufficient to allow the lugs of the pull rod to pass through. The moving trolleys 3 then stop moving, and the crane head 2 drives its components downward until the two lugs of the lower pull rod pass between the two moving trolleys 3. The two moving trolleys 3 then move towards each other... Figure 2In the indicated state, the moving trolley 3 is closed. As the crane head 2 moves downward, the two lugs of the upper pull rod contact the corresponding moving trolley 3. Then, the limiting shell 206 continues to move downward. The limiting shell 206 loses contact with the two lugs of the pull rod and stops moving downward. Then, the two third electric sliders 2031 move backward until the two lugs of the pull rod are removed from the opening of the limiting shell 206. Then, the crane head 2 drives the parts on it to move upward. The crane head 2 moves to the initial position and the crane is closed. Then, all the third electric slide rails 203 and all the telescopic ends of the third hydraulic push rods 301 are reset. The above steps can be repeated when the lower pull rod needs to be connected to the pull rod connecting pin on the moving trolley 3.

[0033] When lifting the tie rod is required, reach as follows Figure 2 In the indicated state, the pin is pulled out by the clamping assembly of the second hydraulic push rod 52. Then, the limiting shell 206 lifts the upper pull rod away. After the pull rod is removed from the limiting shell 206, the limiting shell 206 continues to pull the lower pull rod upward. After the limiting shell 206 moves the pull rod upward, the two lifting lugs of the pull rod lose contact with the corresponding moving trolleys 3. The two moving trolleys 3 are started and move away from each other until the lifting lugs of the pull rod can pass between the two moving trolleys 3. The moving trolleys 3 stop moving until the two lifting lugs on the upper side of the pull rod pass between the two moving trolleys 3. The limiting shell 206 stops moving upward and the two moving trolleys 3 are reset. After the reset is completed, the moving trolleys 3 are closed. Then, the limiting shell 206 moves downward to place the pull rod on the two moving trolleys 3. Then, the pin is pulled out by the clamping assembly of the telescopic end of the second hydraulic push rod 52.

[0034] Example 2, based on Example 1, such as Figure 3 and Figures 6-10 As shown, it also includes a sliding cylinder 501, which is slidably connected to the positioning cylinder 43. A first elastic element is provided between the sliding cylinder 501 and the positioning cylinder 43. Several sets of extrusion frames 502 are circumferentially distributed and fixed to the sliding cylinder 501. Each set of extrusion frames 502 consists of several units arranged in a linear array. Several sets of fixing frames 503 are circumferentially distributed and fixed to the positioning cylinder 43. Each set of fixing frames 503 consists of several units arranged in a linear array. The extrusion frames 502 and fixing frames 503 correspond one-to-one. The fixing frames 503 are rotatably connected to a swing frame 504. The swing frame 504 is used to guide the corresponding extrusion frame 502 to swing. The swing frame 504 is rotatably connected to a roller 505. The roller 505 is used to support the pin hole. The limiting shell 206 is provided with symmetrically distributed leaf springs 601. The leaf springs 601 are used to support the pull lug.

[0035] In the above scheme, the sliding cylinder 501 consists of cylindrical sections at the left and right ends and a square section in the middle. The extrusion frame 502 is installed on the square section of the sliding cylinder 501. The square section of the sliding cylinder 501 corresponds to the through groove of the positioning cylinder 43. The first elastic element is a compression spring. After the pin hole positioning is completed, the pin shaft extrudes the sliding cylinder 501. All the rollers 505 support the pin holes on the inner and outer pin plates. At the same time, the leaf spring 601 provides further stable support for the pull rod, effectively reducing residual swaying during suspension and the reaction force of the pin insertion. The two pull rods are more stable when the pin shaft is inserted. The number of 502 can be set to multiple, but is not limited here. The extrusion frame 502 has a sliding groove for the corresponding swing frame 504 to slide. The fixed frame 503 is located in the corresponding through groove on the positioning cylinder 43. The axis of the swing frame 504 along the sliding position of the corresponding extrusion frame 502 is closer to the central axis of the positioning cylinder 43 than the axis of rotation of the swing frame 504 along the corresponding fixed frame 503, so as to facilitate the swing of the swing frame 504. When the left side of the sliding cylinder 501 is coplanar with the left side of the positioning cylinder 43, the roller 505 is in a vertical state and in contact with the pin plate. The number of leaf springs 601 is four.

[0036] Working principle: When the limit shell 206 lifts the pull rod, the leaf spring 601 first contacts the pull lug of the pull rod. The two pull lugs of the pull rod respectively compress the corresponding leaf spring 601, and the leaf spring 601 undergoes adaptive deformation to support the pull rod.

[0037] Before the right side of the pin contacts the left side of the positioning cylinder 43, the right side of the pin contacts the sliding cylinder 501. The pin squeezes the sliding cylinder 501 and moves it to the right. The first elastic element squeezes and stores force. The sliding cylinder 501 drives all the extrusion frames 502 to move together. The extrusion frames 502 squeeze the corresponding swing frames 504. The swing frames 504 slide along the sliding groove of the extrusion frame 502. All the swing frames 504 swing outward. During this process, the fixed frame 503 rotates relative to the corresponding swing frame 504. The extrusion frame 502 moves relative to the fixed frame 503. The swing frame 504 drives the corresponding roller 505 to swing together. Then the pin contacts the positioning cylinder 43. At the same time, all the rollers 505 contact the pin hole. All the rollers 505 support and position the pull rod. At the same time, the leaf spring 601 further supports and stabilizes the pull rod, effectively reducing the residual sway of the suspension and the reaction force of the pin.

[0038] After the pin is inserted, the positioning cylinder 43 continues to move to the right, and the positioning cylinder 43 loses contact with the pin. During this process, the first elastic element on the positioning cylinder 43 releases its elastic force, and the sliding cylinder 501 continues to contact the pin. The sliding cylinder 501 and the positioning cylinder 43 slide relative to each other, and all the swing frames 504 gradually swing inward. As the positioning cylinder 43 moves, the sliding cylinder 501 loses contact with the pin. At this time, the sliding cylinder 501, the positioning cylinder 43, and the roller 505 are in the following states: Figure 6 As shown.

[0039] Example 3, based on Example 2, such as Figure 3 , Figure 6 , Figure 7 and Figure 9 As shown, it also includes a connecting frame 701, which is fixedly connected to the sliding cylinder 501 and slidably connected to the positioning cylinder 43. A drive motor 702 is fixedly connected to the connecting frame 701, and a rotating component 703 is fixedly connected to the output shaft of the drive motor 702. The rotating component 703 is slidably connected to the positioning cylinder 43. A sliding column 704 is slidably connected to the sliding cylinder 501. The rotating component 703 is used to press the sliding column 704 to move. A second elastic element is provided between the sliding cylinder 501 and the sliding column 704. The sliding column 704 is used to press the pin. Both the rotating component 703 and the sliding column 704 are provided with arc-shaped surfaces. The end of the sliding column 704 away from the rotating component 703 is provided with a corrugated annular surface.

[0040] In the above scheme, the rotating component 703 consists of a rotating rod and two pressing blocks. The pressing blocks of the rotating component 703 are used to press the right end of the sliding column 704, realizing the reciprocating movement of the sliding column 704, which causes micro-vibration of the pin, reduces the resistance of the pin insertion, and at the same time reduces the rigid jamming and scratching between the pin and the pin hole, further improving the smoothness of the pin insertion process and greatly reducing the pin assembly time. The second elastic component is a spring. The corrugated annular surface on the sliding column 704 is used to change the contact mode with the pin and improve the vibration effect of the pin.

[0041] Working principle: When the sliding cylinder 501 moves, the sliding cylinder 501 drives the connecting frame 701 and its parts to move together.

[0042] When inserting the pin, the drive motor 702 is started. The output shaft of the drive motor 702 drives the rotating part 703 to rotate. The pressing block of the rotating part 703 contacts the sliding column 704. Under the action of the pressing block on the rotating part 703, the sliding column 704 moves to the left. As the sliding column 704 moves to the left, the second elastic element of the sliding column 704 is compressed, and the sliding column 704 contacts the pin. As the pressing block on the rotating part 703 rotates, the pressing block on the rotating part 703 loses contact with the sliding column 704, and the elastic force of the second elastic element is released. The sliding column 704 moves to the right. As the rotating part 703 rotates, the sliding column 704 reciprocates, causing micro-vibration of the pin, reducing the resistance to pin insertion, and reducing rigid jamming and scratching between the pin and the pin hole. This further improves the smoothness of the pin insertion process and greatly reduces the pin assembly time. After the pin is inserted into the pin hole, the drive motor 702 is turned off.

[0043] When pulling out the pin, the sliding cylinder 501 can be brought into contact with the pin, and the drive motor 702 can be started. The rotating part 703 rotates to make the sliding column 704 transmit micro-vibrations to the pin surface, reducing the pin from getting stuck when pulling it out.

[0044] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic insertion device for a gate hoist connecting pin, comprising a fixed pier (1), wherein the fixed pier (1) is provided with a crane head (2), and the fixed pier (1) is slidably connected to symmetrically distributed moving trolleys (3), wherein the symmetrically distributed moving trolleys (3) are respectively used to support corresponding lifting lugs, characterized in that, The fixed block (1) is equipped with a first electric slide rail (4) and a second electric slide rail (5). The first electric slide rail (4) and the second electric slide rail (5) are slidably connected with a first electric slider (41) and a second electric slider (51). The first electric slider (41) and the second electric slider (51) are respectively equipped with a first hydraulic push rod (42) and a second hydraulic push rod (52). The telescopic end of the first hydraulic push rod (42) is fixedly connected with a positioning cylinder (43). The positioning cylinder (43) is used to position the pull rod. The telescopic end of the second hydraulic push rod (52) is used to squeeze the pin shaft to move. The crane head (2) is equipped with a fine adjustment component. The fine adjustment component is used to drive the pull rod to move.

2. The automatic insertion device for the connecting pin of a gate hoist according to claim 1, characterized in that, The fine-tuning component includes a drive frame (201), which is fixed to the crane head (2). The drive frame (201) is fixed to a fixed rail (202), and the fixed rail (202) is fixed to a symmetrically distributed third electric slide rail (203). The third electric slide rail (203) is slidably connected to a third electric slider (2031). The symmetrically distributed third electric sliders (2031) are all fixed to a sliding plate (204). The sliding plate (204) is ball-connected to a swing plate (205). The swing plate (205) is fixed to a limiting shell (206), which is used to drive the symmetrically distributed pull ears to move.

3. The automatic insertion device for the connecting pin of a gate hoist according to claim 2, characterized in that, The limiting shell (206) has two inclined surfaces. The distance between the two inclined surfaces of the limiting shell (206) gradually decreases from the side closer to the sliding plate (204) to the side farther away from the sliding plate (204). The two inclined surfaces of the limiting shell (206) are used to guide the corresponding pull lugs.

4. The automatic insertion device for the connecting pin of a gate hoist according to claim 2, characterized in that, The sliding plate (204) is fixedly connected to a rectangularly distributed third hydraulic push rod (301). All the telescopic ends of the third hydraulic push rod (301) are fixedly connected to a pull ring. The swing plate (205) is fixedly connected to a rectangularly distributed hook. The pull rings at the telescopic ends of the third hydraulic push rod (301) correspond one-to-one with the hooks of the swing plate (205). The pull rings at the telescopic ends of the third hydraulic push rod (301) are connected in series with a circular ring (302). The circular ring (302) is used to lift the corresponding hooks on the swing plate (205).

5. The automatic insertion device for the connecting pin of a gate hoist according to claim 2, characterized in that, A counterweight (401) is installed inside the fixed railing (202), and the counterweight (401) is used to improve the stability of the fixed railing (202).

6. The automatic insertion device for the connecting pin of a gate hoist according to claim 1, characterized in that, It also includes a sliding cylinder (501), which is slidably connected to the positioning cylinder (43). A first elastic element is provided between the sliding cylinder (501) and the positioning cylinder (43). The sliding cylinder (501) is fixedly connected to several circumferentially distributed extrusion frames (502). Each set of extrusion frames (502) consists of several units arranged in a linear array. The positioning cylinder (43) is fixedly connected to several circumferentially distributed fixing frames (503). Each set of fixing frames (503) consists of several units arranged in a linear array. The extrusion frames (502) and fixing frames (503) correspond one-to-one. The fixing frames (503) are rotatably connected to a swing frame (504). The swing frame (504) is used to guide the corresponding extrusion frame (502) to swing. The swing frame (504) is rotatably connected to a roller (505). The roller (505) is used to support the pin hole.

7. The automatic insertion device for the connecting pin of a gate hoist according to claim 3, characterized in that, The limiting shell (206) is provided with symmetrically distributed leaf springs (601), which are used to support the pull lugs.

8. The automatic insertion device for the connecting pin of a gate hoist according to claim 6, characterized in that, It also includes a connecting frame (701), which is fixedly connected to the sliding cylinder (501). The connecting frame (701) is slidably connected to the positioning cylinder (43). The connecting frame (701) is fixedly connected to a drive motor (702). The output shaft of the drive motor (702) is fixedly connected to a rotating component (703). The rotating component (703) is slidably connected to the positioning cylinder (43). The sliding cylinder (501) is slidably connected to a sliding column (704). The rotating component (703) is used to press the sliding column (704) to move. A second elastic element is provided between the sliding cylinder (501) and the sliding column (704). The sliding column (704) is used to press the pin.

9. The automatic insertion device for the connecting pin of a gate hoist according to claim 8, characterized in that, Both the rotating component (703) and the sliding column (704) are provided with arc-shaped surfaces.

10. The automatic insertion device for the connecting pin of a gate hoist according to claim 9, characterized in that, The sliding column (704) has a corrugated annular surface at the end away from the rotating member (703).

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