Lifting detection moving crown block structure

Abstract

The utility model belongs to the technical field of transfer machinery, and particularly relates to a lifting detection moving crown block structure which comprises a mounting frame, a lifting frame, a lifting driving mechanism and a detection mechanism. Connecting frames are arranged at the two ends of the mounting frame and comprise guide columns, and the lifting frame is arranged on the guide columns in a sliding and sleeving mode. The lifting driving mechanism comprises a motor, a first speed reducer, a second speed reducer, a transmission shaft and two screw rod assemblies; the first speed reducer is provided with an input end and two output ends; the second speed reducer is provided with an input end and an output end; the motor is arranged on the mounting frame and connected with the input end of the first speed reducer, and the transmission shaft is connected with one output end of the first speed reducer and the input end of the second speed reducer; the first speed reducer is connected with one lead screw assembly, and the second speed reducer is connected with the other lead screw assembly. A nut of the lead screw assembly is connected with the lifting frame, and a lead screw of the lead screw assembly is rotationally connected with the connecting frame. A lead screw of each lead screw assembly is provided with a detection mechanism; the two detection mechanisms are used for detecting whether the two lead screws rotate simultaneously.

Description

Technical Field

[0001] The utility model belongs to the technical field of transfer machinery, and in particular relates to a lifting and detecting mobile overhead crane structure. Background Art

[0002] In automated industrial production, transfer devices are essential equipment. For example, they are used in manipulators and transplanting equipment. For example, the Chinese utility model patent with authorization announcement number CN210944582U discloses a staggered lifting device, which includes two opposing support members, a first moving mechanism, and a second moving mechanism. The upper ends of the two support members are each provided with a first guide rail, and the two first guide rails are arranged parallel to each other. The two ends of the first moving mechanism are respectively connected to the corresponding first guide rails, and the first moving mechanism moves horizontally along the two first guide rails. The first moving mechanism is provided with a clamping mechanism. The inner sides of the two support members are provided with a support portion, and the support portions of the two support members are each provided with a second guide rail, and the two second guide rails are parallel to the first guide rails. The two ends of the second moving mechanism are respectively connected to the corresponding second guide rails. The second moving mechanism moves along the second guide rail. The second moving mechanism is located below the first moving mechanism. The second moving mechanism is provided with a lifting mechanism. The clamping mechanism includes a lifting mechanism provided on the first moving mechanism and a clamping mechanism provided at the bottom end of the lifting mechanism. The lifting mechanism drives the clamping mechanism to move up and down. The lifting mechanism includes an upper mounting plate, a connecting column, a lower mounting plate, a guide column, a ball screw, a lifting frame and an electric mechanism; the upper mounting plate is arranged on the first moving mechanism; the upper ends of the multiple connecting columns are connected to the upper mounting plate, and the bottom ends are connected to the lower mounting plate; two groups of guide columns and two ball screws connect the upper mounting plate and the lower mounting plate, and the guide columns slide through the lifting frame, and the nuts of the ball screws are connected to the lifting frame; the two ball screws are rotatably connected to the upper mounting plate and the lower mounting plate; the two groups of guide columns are located at both ends between the upper mounting plate and the lower mounting plate; the electric mechanism drives the screw rods of the two ball screws to rotate, so that the lifting frame moves up and down along the guide columns; the clamping mechanism is arranged on the lifting frame.

[0003] The technical solution disclosed in the aforementioned patent document utilizes a single motor to drive two sets of screws, which are connected by a transmission shaft. This allows both sets of screws to rotate simultaneously, achieving the lifting effect. However, a clamping mechanism is provided on the bottom side of the lifting frame. When the clamping mechanism grips an object and lifts and lowers it, the screws experience a significant load. Under heavy load, fatigue of the screws and steering mechanism can easily occur, leading to jamming or even breakage. To overcome this drawback, a detection system is provided to detect transmission mechanism failures. Currently, detection is typically achieved by measuring changes in the motor's load, calculating the load change to determine transmission mechanism failure. However, transmission mechanism failures can vary, such as jamming and breakage, resulting in varying load changes. Therefore, using load change as a method for identification is not only complex but also ineffective. Another approach to overcome this drawback is to provide opposing photoelectric switches at both ends of the lifting frame. The two photoelectric switches sense each other to detect whether the lifting frames are being raised or lowered simultaneously. However, the long distance between the two photoelectric switches can cause a light spot, leading to ineffective sensing. In addition, after the transmission mechanism fails, the lifting and lowering will remain motionless, and it will be impossible to detect whether the transmission mechanism has failed. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting detection mobile overhead crane structure, which is used to solve the problem that the lifting transmission mechanism of the transplanting mechanism in the prior art is difficult to detect faults and the transmission mechanism cannot be accurately detected.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention provides a lifting and testing mobile overhead crane structure, comprising a mounting frame, a lifting frame, a lifting drive mechanism and a detection mechanism; connecting frames are provided at both ends of the mounting frame, the connecting frame includes guide columns, and the lifting frame slides on the guide columns of the two connecting frames; the lifting drive mechanism includes a motor, a first reducer, a second reducer, a transmission shaft and two screw rod assemblies; the first reducer and the second reducer are arranged at both ends of the top side of the mounting frame, the first reducer is provided with an input end and two output ends, and the two output ends of the first reducer are arranged perpendicular to each other; the second reducer is provided with a plurality of Straight input and output ends; the motor is arranged on the mounting frame and connected to the input end of the first reducer, and the transmission shaft is connected to an output end of the first reducer and the input end of the second reducer; the other output end of the first reducer is connected to one of the screw rod components, and the output end of the second reducer is connected to another of the screw rod components, and the screw rod components are arranged on the corresponding connecting frame; the nut of the screw rod component is connected to the lifting frame, and the screw rod of the screw rod component is rotatably connected to the connecting frame; a detection mechanism is provided on the screw rod of each of the screw rod components; the two detection mechanisms are used to detect whether the two screw rods rotate at the same time.

[0006] Furthermore, the detection mechanism includes a through-beam photoelectric switch and a sensing plate; a plurality of air-avoidance grooves are provided on the sensing plate, and adjacent air-avoidance grooves form a shielding portion for isolating the through-beam photoelectric switch; the sensing plate is provided on the lead screw, and the through-beam photoelectric switch is provided on the connecting frame, or the sensing plate is provided on the connecting frame, and the through-beam photoelectric switch is provided on the lead screw.

[0007] Furthermore, the induction plate is sleeved on the disc at the bottom end of the screw rod, and the outer ring of the induction plate is provided with a plurality of the air-avoiding grooves; the opposing photoelectric switch is provided on the connecting frame.

[0008] Furthermore, a jacket is provided at the bottom end of the screw rod, and the jacket includes two semi-annular clamping blocks; the induction plate includes two semicircular pieces, and is respectively provided on the corresponding semi-annular clamping blocks.

[0009] Furthermore, the opposing photoelectric switch is a slot-type photoelectric switch.

[0010] Furthermore, the detection mechanism is an encoder provided on the connecting frame, and the encoder is transmission-connected to the corresponding screw rod.

[0011] The above one or more technical solutions in the lifting and detection mobile overhead crane structure provided by the embodiment of the utility model have at least the following technical effects:

[0012] The utility model has a lifting detection mobile overhead crane structure. The motor drives the first reducer. The two output ends of the first reducer respectively drive the transmission shaft and the screw of one group of screw assemblies to rotate. At the same time, the transmission shaft drives the second reducer. The second reducer then drives the screw of the other group of screw assemblies to rotate. Therefore, the screws in the two groups of screw assemblies rotate at the same time, thereby driving the lifting frame to rise and fall. Since the screws of the two groups of screw assemblies are connected to the detection mechanism, it is possible to detect whether the screws of the two screw assemblies rotate at the same time through the detection mechanism. If the screws of the two screw assemblies rotate synchronously, the whole is operating normally. A difference in the screw rotation of the two groups of screw assemblies will be detected, and a fault alarm will be issued by the control system. Therefore, the lifting detection mobile overhead crane structure can accurately detect whether the lifting drive mechanism is stuck or other faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1This is a structural diagram of the lifting and detection mobile overhead crane structure provided in an embodiment of the utility model.

[0015] Figure 2 for Figure 1 A partial enlarged view of .

[0016] Figure 3 This is a left side view of another embodiment of the lifting and detection mobile overhead crane structure provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0017] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0018] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0020] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0021] In one embodiment of the lifting and detecting mobile overhead crane structure of the present invention, specifically, please refer to Figures 1 to 3The lifting and testing mobile overhead crane structure includes a mounting frame 100, a lifting frame 200, a lifting drive mechanism 300 and a detection mechanism 400. Connecting frames 500 are provided at both ends of the mounting frame 100. The connecting frames 500 include guide posts 510. The lifting frame 200 is slidably sleeved on the guide posts 510 of the two connecting frames 500. The lifting drive mechanism 300 includes a motor 310, a first reducer 320, a second reducer 330, a transmission shaft 340 and two screw rod assemblies 350. The first reducer 320 and the second reducer 330 are arranged at both ends of the top side of the mounting frame 100. The first reducer 320 is provided with an input end and two output ends, and the two output ends of the first reducer 320 are arranged perpendicular to each other. The second reducer 330 is provided with an input end and an output end perpendicular to each other; the motor 310 is provided on the mounting frame 100 and connected to the input end of the first reducer 320, and the transmission shaft 340 is connected to one output end of the first reducer 320 and the input end of the second reducer; the other output end of the first reducer 320 is connected to a screw assembly 350, and the output end of the second reducer 330 is connected to another screw assembly 350, and the screw assembly 350 is provided on the corresponding connecting frame 500. The nut of the screw assembly 350 is connected to the lifting frame 200, and the screw of the screw assembly 350 is rotatably connected to the connecting frame 500. A detection mechanism 400 is provided on the screw of each screw assembly 350; the two detection mechanisms 400 are used to detect whether the two screws rotate at the same time. Preferably, the inspection mechanism 400 is connected to the control system to feed back the detected information to the control system. Specifically, the lifting and detection mobile overhead crane structure of this embodiment is driven by a motor 310 to drive a first reducer 320. The two output ends of the first reducer 320 respectively drive the transmission shaft 340 and the screws of one set of screw assemblies 350 to rotate. Simultaneously, the transmission shaft 340 drives the second reducer 330, which in turn drives the screws of the other set of screw assemblies 350 to rotate. Therefore, the screws in the two sets of screw assemblies 350 rotate simultaneously, thereby driving the lifting frame 200 to rise and fall. Because the screws of both sets of screw assemblies 350 are connected to the detection mechanism 400, the detection mechanism 400 can detect whether the screws of the two screw assemblies 350 rotate simultaneously. If the screws of the two screw assemblies 350 rotate synchronously, the entire structure is operating normally. A difference in the screw rotation of the two sets of screw assemblies 350 will be detected, and the control system will issue a fault alarm. Therefore, this lifting and detection mobile overhead crane structure can accurately detect whether the lifting drive mechanism is stuck or other faults.

[0022] Further, refer to Figure 1 and Figure 2The detection mechanism 400 includes a corresponding photoelectric switch 410 and a sensing plate 420. A plurality of avoidance grooves 421 are provided on the sensing plate 420, and adjacent avoidance grooves 421 form a shielding portion 422 for isolating the corresponding photoelectric switch 410. The sensing plate 420 is provided on the screw, and the corresponding photoelectric switch 410 is provided on the connecting frame 500, or the sensing plate 420 is provided on the connecting frame 500, and the corresponding photoelectric switch 410 is provided on the screw. In this embodiment, the sensing half 420 or the corresponding photoelectric switch 410 is driven to rotate by the screw, so that the shielding portion 422 on the sensing plate 420 alternately shields the corresponding photoelectric switch 410, thereby realizing the alternating on and off of the corresponding photoelectric switch 410. When the on-off frequencies of the corresponding photoelectric switches 410 in the two detection mechanisms 400 are different, a fault in the lifting drive mechanism 300 can be identified.

[0023] Furthermore, the sensing plate 420 is a disc sleeved on the bottom end of the screw rod, and the outer ring of the sensing plate 420 is provided with a plurality of air-avoiding grooves; the beam photoelectric switch 410 is provided on the connecting frame 500. Furthermore, the beam photoelectric switch 410 is a slot-type photoelectric switch.

[0024] Further, refer to Figure 2 The bottom end of the screw rod is also provided with a jacket 351, which includes two semi-circular clamping blocks. The sensing plate 420 includes two semi-circular discs, each of which is mounted on a corresponding semi-circular clamping block. In this embodiment, the sensing plate 420 is conveniently connected to the screw rod and is easily disassembled and replaced. Specifically, one semi-circular clamping block has a screw hole on its side, and the other semi-circular clamping block has a countersunk hole on its side. A locking bolt passes through the countersunk hole and connects to the screw hole, forming the two semi-circular clamping blocks into a single unit.

[0025] Further, another embodiment of the detection mechanism 400, specifically, please refer to Figure 3 Detection mechanism 400 is an encoder mounted on a connecting frame, which is in transmission connection with the corresponding screw. The encoder is connected to the control system; therefore, in this embodiment, the encoder detects the rotation of the screw and provides feedback to the control system. Furthermore, a transmission gear is mounted on the screw, and a driven gear is mounted on the encoder's rotating shaft, meshing with the transmission gear.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lifting and testing mobile overhead crane structure, characterized in that: It includes a mounting frame, a lifting frame, a lifting drive mechanism and a detection mechanism; connecting frames are provided at both ends of the mounting frame, the connecting frames include guide columns, and the lifting frame slides on the guide columns of the two connecting frames; the lifting drive mechanism includes a motor, a first reducer, a second reducer, a transmission shaft and two screw rod assemblies; the first reducer and the second reducer are arranged at both ends of the top side of the mounting frame, the first reducer is provided with an input end and two output ends, and the two output ends of the first reducer are arranged perpendicular to each other; the second reducer is provided with an input end and an output end that are perpendicular to each other; the motor is provided The mounting frame is connected to the input end of the first reducer, and the transmission shaft is connected to an output end of the first reducer and the input end of the second reducer; the other output end of the first reducer is connected to one screw rod assembly, and the output end of the second reducer is connected to another screw rod assembly, and the screw rod assembly is arranged on the corresponding connecting frame; the nut of the screw rod assembly is connected to the lifting frame, and the screw rod of the screw rod assembly is rotatably connected to the connecting frame; a detection mechanism is provided on the screw rod of each screw rod assembly; the two detection mechanisms are used to detect whether the two screw rods rotate at the same time.

2. The lifting and testing mobile overhead crane structure according to claim 1 is characterized in that: The detection mechanism includes a through-beam photoelectric switch and a sensing plate; the sensing plate is provided with a plurality of air-avoidance grooves, and adjacent air-avoidance grooves form a shielding portion for isolating the through-beam photoelectric switch; the sensing plate is provided on the lead screw, and the through-beam photoelectric switch is provided on the connecting frame, or the sensing plate is provided on the connecting frame, and the through-beam photoelectric switch is provided on the lead screw.

3. The lifting and testing mobile overhead crane structure according to claim 2 is characterized in that: The induction plate is sleeved on the disc at the bottom end of the screw rod, and the outer ring of the induction plate is provided with a plurality of the air-avoiding grooves; the opposing photoelectric switch is arranged on the connecting frame.

4. The lifting and testing mobile overhead crane structure according to claim 3 is characterized in that: The bottom end of the screw rod is further provided with a jacket, which includes two semi-annular clamping blocks; the induction plate includes two semi-circular pieces, which are respectively provided on the corresponding semi-annular clamping blocks.

5. The lifting and testing mobile overhead crane structure according to any one of claims 2 to 4, characterized in that: The opposing photoelectric switch is a slot-type photoelectric switch.

6. The lifting and testing mobile overhead crane structure according to claim 1 is characterized in that: The detection mechanism is an encoder provided on the connecting frame, and the encoder is transmission-connected to the corresponding screw rod.

Images