Transplanting device for OHT crown block maintenance equipment

Abstract

The transplanting device for the OHT crown block maintenance equipment comprises a lifting frame and a traction mechanism, the lifting frame comprises two butt joint rails and two supporting frames, suspension devices are installed outside the supporting frames, the traction mechanism comprises a grabbing mechanism and a transmission mechanism, the grabbing mechanism comprises a clamping air cylinder and two clamping jaw assemblies, and the clamping air cylinder is connected with the transmission mechanism. The two clamping jaw assemblies are used for grabbing a clamping part of the crown block, the clamping air cylinder is used for driving the clamping jaw assemblies to clamp or loosen, the transmission mechanism comprises a servo motor assembly and a synchronous belt assembly, the synchronous belt assembly drives the grabbing mechanism to move, and the servo motor assembly is used for driving the synchronous belt assembly. The device is simple and compact in structure, high in reliability and convenient to maintain, is only driven by a single-side motor, can control the cost, and can realize accurate crown block positioning through cooperative positioning of multiple sensors.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a transplanting device used for OHT overhead crane maintenance equipment. Background Art

[0002] "OHT" is the abbreviation of overhead hoist transport, which means that it can travel on an aerial track and directly enter the loading and unloading port of storage equipment or process equipment through a synchronous belt mechanism. It is mostly used for internal transportation in process areas, as well as transportation between process areas or factories. Because the OHT crane is set on an aerial track, there is a need to lift it up and down. The crane up and down track pick-up and drop-off equipment is designed for lifting the OHT crane.

[0003] Most of the existing overhead crane up and down track transportation equipment adopts a non-contact power supply and its supporting equipment configured on the lifting mechanism to provide power to the overhead crane when it is moving on the lifting track, and then the movement distance of the overhead crane is controlled by the sensor installed on the lifting mechanism, so that the overhead crane can automatically move to the specified lifting position. Although it can achieve the expected goal, it also makes the overall cost of this set of equipment relatively high. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the utility model proposes a transplanting device for OHT overhead crane maintenance equipment, which has a simple and compact structure, high reliability, and is easy to maintain. It only uses a single-sided motor drive, which can control costs. At the same time, through the coordinated positioning of multiple sensors, accurate overhead crane positioning can be achieved.

[0005] To achieve the above-mentioned purpose, the utility model provides a transplanting device for OHT overhead crane maintenance equipment, comprising a lifting frame and a traction mechanism, the lifting frame comprising two docking rails and two supporting frames, a suspension device being installed outside the supporting frame, the traction mechanism comprising a grasping mechanism and a transmission mechanism, the grasping mechanism comprising a clamping cylinder and two clamping jaw assemblies, the two clamping jaw assemblies being used to grasp the clamping part of the overhead crane, the clamping cylinder being used to drive the clamping jaw assembly to clamp or release, the transmission mechanism comprising a servo motor assembly and a synchronous belt assembly, the synchronous belt assembly drives the grasping mechanism to move, and the servo motor assembly is used to drive the synchronous belt assembly.

[0006] Furthermore, the two docking rails are parallel to each other, and the two support frames are respectively located at the two ends of the docking rails in the length direction. The support frames include support beams. The two support beams are parallel to each other. A traction base plate is connected between the two support beams. Support brackets are respectively provided at both ends of the support beams. The support brackets are perpendicular to the support beams and face the docking rails. The support brackets at both ends of the support beams are respectively connected to the two docking rails, and the support brackets are provided with steel wire ropes for connecting to the suspension device.

[0007] Furthermore, positioning bushings are respectively provided at both ends of the docking track, and opposing photoelectric components are respectively provided in the middle of the two docking tracks, and the connection line of the opposing photoelectric components on both sides is parallel to the supporting beam.

[0008] Furthermore, the servo motor assembly is arranged on the outside of the supporting beam away from the entry and exit end of the overhead crane, the output shaft of the servo motor assembly is parallel to the supporting beam, the synchronous belt assembly includes a first synchronous wheel assembly, a second synchronous wheel assembly and a synchronous belt, the first synchronous wheel assembly is arranged on the outside of the supporting beam close to the servo motor assembly, the output shaft of the servo motor assembly drives the wheel body of the first synchronous wheel assembly to rotate through a coupling, and the second synchronous wheel assembly is arranged on the outside of the supporting beam away from the servo motor assembly.

[0009] Furthermore, tensioning wheel assemblies are respectively provided on the inner sides of the supporting beams on both sides, a longitudinal adjustment groove is provided on the bearing seat of the tensioning wheel assembly, and an adjustment plate is provided on the inner side of the supporting beam. The height of the tensioning wheel assembly is fixed and adjusted by setting bolts in the adjustment groove that are threadedly connected to the threaded holes on the adjustment plate.

[0010] Furthermore, the grabbing mechanism includes a grabbing base plate, a clamping cylinder is arranged at the bottom of the grabbing base plate, piston rods are respectively provided at both ends of the length direction of the clamping cylinder, the piston rods on both sides are extended and retracted simultaneously, two clamping jaw assemblies are respectively arranged on the piston rods on both sides, and a clamping block is provided at the bottom of the clamping jaw assembly.

[0011] Furthermore, linear guide assemblies are respectively provided on the two long sides of the traction base plate, and the linear guide assemblies are parallel to the docking guide rails. Two sliders are provided on the top of the grabbing base plate, and the two sliders are respectively slidably connected to the linear guide assemblies on both sides. A pressure plate assembly for clamping the synchronous belt is also provided on the top of the grabbing base plate.

[0012] Furthermore, a sensor mounting plate is provided on a side of the gripping base plate facing away from the servo motor assembly, and a displacement sensor assembly is provided on the sensor mounting plate.

[0013] Furthermore, a limit sensor assembly is provided on the bottom surface of the traction base plate, a baffle for triggering the limit sensor assembly is provided on the top of the grabbing base plate, and an in-position sensor assembly is provided at one end of the traction base plate away from the servo motor assembly.

[0014] Furthermore, a drag chain connecting plate is provided on the side of the grabbing base plate, a drag chain assembly is connected to the drag chain connecting plate, the other end of the drag chain assembly is connected to a supporting beam away from the grabbing base plate, and a drag chain limiting plate is provided between the supporting beams on both sides.

[0015] The transplanting device of the utility model for OHT overhead crane maintenance equipment has a simple and compact structure, high reliability, and is easy to maintain. It only uses a single-sided motor drive, which can control costs. At the same time, it can achieve accurate overhead crane positioning through the coordinated positioning of multiple sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described and elaborated below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of a transplanting device for OHT overhead crane maintenance equipment according to a preferred embodiment of the utility model.

[0018] Figure 2 yes Figure 1 Magnified view of point A in .

[0019] Figure 3 It is a structural diagram used to reflect the connection relationship between the grasping mechanism and the transmission mechanism.

[0020] Figure 4 It is a structural diagram used to reflect the grasping mechanism.

[0021] Figure 5 It is a structural diagram used to reflect the transplanting device used for OHT overhead crane maintenance equipment entering and exiting one end of the overhead crane.

[0022] 1. Lifting frame; 11. Docking rail; 111. Positioning bushing; 112. Opposite photoelectric component; 12. Support frame; 121. Support beam; 122. Support bracket; 123. Wire rope; 2. Transmission mechanism; 21. Servo motor assembly; 221. First synchronous wheel assembly; 222. Second synchronous wheel assembly; 223. Synchronous belt; 224. Tensioning wheel assembly; 225. Adjustment groove; 226. Adjustment plate; 23. Traction base plate; 231. Linear guide rail assembly; 232. Limit sensor assembly; 233. In-position sensor assembly; 3. Grasping mechanism; 31. Clamping cylinder; 32. Clamping claw assembly; 321. Clamping block; 33. Grasping base plate; 331. Slider; 332. Pressure plate assembly; 333. Displacement sensor assembly; 335. Baffle; 336. Drag chain connecting plate; 4. Drag chain assembly; 41. Drag chain limit plate. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be more clearly and completely explained below by describing the preferred embodiments of the present invention in combination with the accompanying drawings.

[0024] like Figure 1As shown, the transplanting device for OHT overhead crane maintenance equipment of the preferred embodiment of the utility model comprises a lifting frame 1 and a traction mechanism. The main purpose of the device is to send the overhead crane on the track off the track for inspection and repair, or to send the overhead crane after the inspection and repair back onto the track, during which the overhead crane is towed to the designated position and is responsible for carrying the overhead crane during the process of the overhead crane going up and down.

[0025] like Figure 1 As shown, the lifting frame 1 includes two docking rails 11 and two supporting frames 12. The two docking rails 11 are parallel to each other. Two pairs of photoelectric components 112 are respectively arranged in the middle of the docking rails 11 on both sides. The connecting line of the photoelectric components 112 on both sides is parallel to the supporting beam 121. The two supporting frames 12 are respectively located at the two ends of the length direction of the docking rail 11. The supporting frame 12 includes a supporting beam 121. The two supporting beams 121 are parallel to each other. A traction bottom plate 23 is connected between the two supporting beams 121. Support brackets 122 are respectively arranged at both ends of the supporting beam 121. The supporting brackets 122 are perpendicular to the supporting beam 121 and face the docking rail 11. The supporting brackets 122 at both ends of the supporting beam 121 are respectively connected to the two docking rails 11. The docking rails 11 and the supporting frames 12 constitute the main load-bearing part of the lifting mechanism. When the overhead crane is lifted, it stops at the middle position of the docking rail 11. The remaining components are also installed on the docking rail 11 and the supporting frame 12.

[0026] like Figure 1 As shown, a suspension device is installed outside the support frame 12, and the suspension device is generally installed on the ceiling. A steel wire rope 123 for connecting with the suspension device is provided on the support bracket 122. Positioning bushings 111 are provided at both ends of the docking track 11. When the overhead crane needs to be transported, the entire device is raised or lowered to a specified position through the external suspension device, and then the staff manually inserts the positioning column into the four positioning bushings 111, so that the docking track 11 can be accurately docked with other tracks.

[0027] The traction mechanism includes a gripping mechanism 3 and a transmission mechanism 2 .

[0028] like Figure 1 and Figure 3As shown, the transmission mechanism 2 includes a servo motor assembly 21 and a synchronous belt 223 assembly. The servo motor assembly 21 is arranged on the outside of the supporting beam 121 away from the end of the overhead crane for entry and exit. The output shaft of the servo motor assembly 21 is parallel to the supporting beam 121. The synchronous belt 223 assembly includes a first synchronous wheel assembly 221, a second synchronous wheel assembly 222 and a synchronous belt 223. The first synchronous wheel assembly 221 is arranged on the outside of the supporting beam 121 close to the servo motor assembly 21. The output shaft of the servo motor assembly 21 drives the wheel body of the first synchronous wheel assembly 221 to rotate through a coupling. The second synchronous wheel assembly 222 is arranged on the outside of the supporting beam 121 away from the servo motor assembly 21 and is a driven wheel. The synchronous belt 223 is connected between the wheel body of the first synchronous wheel assembly 221 and the wheel body of the second synchronous wheel assembly 222 to form a complete synchronous belt 223 assembly.

[0029] like Figure 1 and Figure 2 As shown, tensioning wheel assemblies 224 are respectively provided on the inner sides of the supporting beams 121 on both sides, and a longitudinal adjustment groove 225 is provided on the bearing seat of the tensioning wheel assembly 224. An adjustment plate 226 is provided on the inner side of the supporting beam 121, and a threaded hole is provided on the adjustment plate 226. Bolts are threadedly connected to the threaded hole. The height of the tensioning wheel assembly 224 can be adjusted by adjusting the relative position of the adjusting groove 225 and the bolt. After the height is determined, the tensioning wheel assembly 224 can be fixed by tightening the bolts. The tightness of the synchronous belt 223 can be adjusted by adjusting the position of the tensioning wheel assembly 224 up and down.

[0030] like Figure 3 and Figure 4 As shown, the grabbing mechanism 3 includes a grabbing base plate 33, two sliders 331 are provided on the top of the grabbing base plate 33, and linear guide rail assemblies 231 are respectively provided on the two long sides of the traction base plate 23. The linear guide rail assemblies 231 are parallel to the docking guide rails. The two sliders 331 are respectively slidably connected to the linear guide rail assemblies 231 on both sides. A pressure plate assembly 332 for clamping the synchronous belt 223 is also provided on the top of the grabbing base plate 33, so that the grabbing mechanism 3 can be driven to move along the linear guide rail assembly 231 through the synchronous belt 223.

[0031] like Figure 3 and Figure 4 As shown, a clamping cylinder 31 is provided at the bottom of the grabbing base plate 33, and piston rods are provided at both ends of the length direction of the clamping cylinder 31. The piston rods on both sides extend and retract simultaneously, and the piston rods on both sides are respectively connected to the clamping claw assemblies 32. A clamping block 321 is provided at the bottom of the clamping claw assembly 32, and the clamping blocks 321 on both sides are retracted inward to grasp the clamping part of the overhead crane.

[0032] like Figure 3 and Figure 4As shown, a drag chain connecting plate 336 is provided on the side of the grabbing base plate 33, and a drag chain assembly 4 is connected to the drag chain connecting plate 336. The other end of the drag chain assembly 4 is connected to a supporting beam 121 on the side away from the grabbing base plate 33. A drag chain limiting plate 41 is provided between the supporting beams 121 on both sides. The pipes, wiring harnesses, etc. of the clamping cylinder 31 are arranged in the drag chain assembly 4. The drag chain can avoid excessive tensioning of the pipes and wiring harnesses.

[0033] like Figure 4 and Figure 5 As shown, a sensor mounting plate is provided on the side of the grab base plate 33 away from the servo motor assembly 21, and a displacement sensor assembly 333 is provided on the sensor mounting plate. A limit sensor assembly 232 is provided on the bottom surface of the traction base plate 23, and the limit sensor assembly 232 is still a distance away from the end of the traction base plate 23 away from the servo motor assembly 21. A baffle 335 for triggering the limit sensor assembly 232 is provided on the top of the grab base plate 33. An in-position sensor assembly 233 is provided on the end of the traction base plate 23 away from the servo motor assembly 21.

[0034] Specific implementation process: The suspension device moves the lifting frame 1 up and down to the height of the specified track, and then inserts the positioning column into the four positioning bushings 111, so that the docking track 11 is accurately docked with other tracks. After the docking is completed, the overhead crane drives from other tracks to the docking track 11, but because there is no non-contact power supply on the docking track 11, the overhead crane can only move to the power-off position. When the overhead crane moves to the power-off position, it just blocks the in-position sensor assembly 233, thereby confirming that the overhead crane is in position.

[0035] Then the servo motor assembly 21 drives the gripping mechanism 3 to move to a suitable position and clamps the crown block for clamping. After stable clamping, the displacement sensor assembly 333 starts to detect the distance between the crown block and the gripping mechanism 3. By real-time monitoring of the distance between the displacement sensor assembly 333 and the crown block, it is possible to detect whether the gripping mechanism 3 and the crown block have slipped during the traction process, resulting in a change in the relative position between the gripping mechanism 3 and the crown block. If slippage occurs, the real-time detection data of the displacement sensor assembly 333 can be fed back to the servo motor assembly 21 to compensate for the changed relative position within the redundant range.

[0036] After stable clamping, the servo motor assembly 21 drives the grasping mechanism 3 to move, thereby driving the overhead crane to move together. After the overhead crane is translated to the specified position, the two pairs of opposing photoelectric components 112 on the lifting frame 1 are used to confirm whether the overhead crane has correctly moved to the specified position. After confirming that the overhead crane has correctly translated to the specified position, the grasping mechanism 3 still clamps the overhead crane, releases the positioning bolts in the positioning bushings 111, and operates the entire transplanting device to lift and lower. After the transplanting device is lifted and lowered to the specified position, the positioning columns are still inserted into the four positioning bushings 111, so that the docking track 11 is accurately docked with other tracks. After the docking is completed, the servo motor assembly 21 drives the grasping mechanism 3 to move in the opposite direction to the direction in which the overhead crane enters, and pushes the overhead crane horizontally into the docking track, and then the grasping mechanism 3 cancels the clamping and retracts to the appropriate position.

[0037] The transplanting device of the utility model for OHT overhead crane maintenance equipment has a simple and compact structure, high reliability, and is easy to maintain. It only uses a single-sided motor drive, which can control costs. At the same time, it can achieve accurate overhead crane positioning through the coordinated positioning of multiple sensors.

[0038] The above specific implementations are only descriptions of the preferred implementations of the utility model, and do not limit the protection scope of the utility model. Under the premise of not departing from the design concept and spirit of the utility model, various deformations, substitutions and improvements made by ordinary technicians in this field to the technical solution of the utility model based on the text description and drawings provided by the utility model should all fall within the protection scope of the utility model. The protection scope of the utility model is determined by the claims.

Claims

1. A transplanting device for OHT overhead crane maintenance equipment, characterized in that: It comprises a lifting frame (1) and a traction mechanism, The lifting frame (1) comprises two docking rails (11) and two supporting frames (12), and a suspension device is installed outside the supporting frame (12). The traction mechanism comprises a grasping mechanism (3) and a transmission mechanism (2). The gripping mechanism (3) comprises a clamping cylinder (31) and two clamping jaw assemblies (32), wherein the two clamping jaw assemblies (32) are used to grip the clamping portion of the overhead travelling crane, and the clamping cylinder (31) is used to drive the clamping jaw assemblies (32) to clamp or release. The transmission mechanism (2) comprises a servo motor assembly (21) and a synchronous belt (223) assembly, wherein the synchronous belt (223) assembly drives the grasping mechanism (3) to move, and the servo motor assembly (21) is used to drive the synchronous belt (223) assembly.

2. The transplanting device for OHT overhead crane maintenance equipment according to claim 1, characterized in that: The two docking rails (11) are parallel to each other, the two support frames (12) are respectively located at the two ends of the docking rails (11) in the length direction, the support frame (12) comprises a support beam (121), the two support beams (121) are parallel to each other, a traction base plate (23) is connected between the two support beams (121), support brackets (122) are respectively provided at the two ends of the support beam (121), the support brackets (122) are perpendicular to the support beam (121) and face the docking rails (11), the support brackets (122) at the two ends of the support beam (121) are respectively connected to the two docking rails (11), and the support brackets (122) are provided with steel wire ropes (123) for connecting to a suspension device.

3. The transplanting device for OHT overhead crane maintenance equipment according to claim 2, characterized in that: Positioning bushings (111) are respectively provided at both ends of the docking track (11), and opposing photoelectric components (112) are respectively provided in the middle of the docking tracks (11) on both sides, and the connecting line of the opposing photoelectric components (112) on both sides is parallel to the supporting crossbeam (121).

4. The transplanting device for OHT overhead crane maintenance equipment according to claim 3, characterized in that: The servo motor assembly (21) is arranged on the outside of a supporting beam (121) away from an end of the overhead crane for entry and exit; the output shaft of the servo motor assembly (21) is parallel to the supporting beam (121); the synchronous belt (223) assembly comprises a first synchronous wheel assembly (221), a second synchronous wheel assembly (222) and a synchronous belt (223); the first synchronous wheel assembly (221) is arranged on the outside of the supporting beam (121) close to the servo motor assembly (21); the output shaft of the servo motor assembly (21) drives the wheel body of the first synchronous wheel assembly (221) to rotate through a coupling; and the second synchronous wheel assembly (222) is arranged on the outside of the supporting beam (121) away from the servo motor assembly (21).

5. The transplanting device for OHT overhead crane maintenance equipment according to claim 4, characterized in that: Tensioning wheel assemblies (224) are respectively provided on the inner sides of the supporting cross beams (121) on both sides, a longitudinal adjustment groove (225) is provided on the bearing seat of the tensioning wheel assembly (224), and an adjustment plate (226) is provided on the inner side of the supporting cross beam (121), and the height of the tensioning wheel assembly (224) is fixed and adjusted by bolts which are threadedly connected to the threaded holes on the adjustment plate (226) and arranged in the adjustment grooves (225).

6. The transplanting device for OHT overhead crane maintenance equipment according to claim 5, characterized in that: The gripping mechanism (3) comprises a gripping base plate (33), the clamping cylinder (31) is arranged at the bottom of the gripping base plate (33), piston rods are respectively arranged at both ends of the length direction of the clamping cylinder (31), the piston rods on both sides are extended and retracted at the same time, the two clamping jaw assemblies (32) are respectively arranged on the piston rods on both sides, and a clamping block (321) is provided at the bottom of the clamping jaw assembly (32).

7. The transplanting device for OHT overhead crane maintenance equipment according to claim 6, characterized in that: The two long sides of the traction base plate (23) are respectively provided with linear guide rail assemblies (231), and the linear guide rail assemblies (231) are parallel to the docking guide rails. The top of the grabbing base plate (33) is provided with two sliders (331), and the two sliders (331) are respectively slidably connected to the linear guide rail assemblies (231) on both sides. The top of the grabbing base plate (33) is also provided with a pressure plate assembly (332) for clamping the synchronous belt (223).

8. The transplanting device for OHT overhead crane maintenance equipment according to claim 7, characterized in that: A sensor mounting plate is provided on the side of the grabbing bottom plate (33) facing away from the servo motor assembly (21), and a displacement sensor assembly (333) is provided on the sensor mounting plate.

9. The transplanting device for OHT overhead crane maintenance equipment according to claim 8, characterized in that: The bottom surface of the traction base plate (23) is provided with a limit sensor assembly (232), the top of the grabbing base plate (33) is provided with a baffle (335) for triggering the limit sensor assembly (232), and the end of the traction base plate (23) away from the servo motor assembly (21) is provided with an in-position sensor assembly (233).

10. The transplanting device for OHT overhead crane maintenance equipment according to claim 9, characterized in that: A drag chain connecting plate (336) is provided on the side of the grabbing base plate (33), a drag chain assembly (4) is connected to the drag chain connecting plate (336), the other end of the drag chain assembly (4) is connected to a supporting crossbeam (121) on a side away from the grabbing base plate (33), and a drag chain limiting plate (41) is provided between the supporting crossbeams (121) on both sides.

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