A material conveying device and its control method

Abstract

The present invention discloses a mechanical device, particularly relating to a material conveying device and its control method, including: two parallel tracks; two support frames respectively placed on the two tracks, and the support frames can move along the tracks; a cross beam spanning across the two support frames; a hoisting mechanism placed on the cross beam and capable of moving along the cross beam. A driving mechanism for driving the support frame to move on the track is provided on the support frame. The driving mechanism includes a driving motor and a walking wheel. A first gear is arranged on the driving motor, a second gear is arranged on the walking wheel, the first gear meshes with the second gear, and a clutch assembly is arranged between the walking wheel and the second gear. The clutch assembly includes a first state and a second state and a switching mechanism for switching between the first state and the second state. In the first state, torque can be transmitted between the second gear and the walking wheel, and in the second state, torque cannot be transmitted between the second gear and the walking wheel.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical equipment, and particularly relates to a material conveying device and a control method thereof. Background Art

[0002] During the production process of bridge construction formwork, steel plates need to be conveyed to different workstations for cutting, welding and other operations. Since the quality of bridge construction formwork is relatively large, gantry cranes are usually installed in the production workshop to hoist the steel plates, so as to convey the steel plates between different workstations. There are many equipment and sundries in the workshop, and the gantry crane needs to have high safety. Summary of the Invention

[0003] The purpose of the present invention is to provide a material conveying device with high safety in view of the above existing technical problems.

[0004] The purpose of the present invention is achieved as follows: A material conveying device includes:

[0005] Two tracks which are parallel to each other;

[0006] Two supports which are respectively placed on the two tracks, and the supports can move along the tracks;

[0007] A cross beam which spans across the two supports;

[0008] A hoisting mechanism which is placed on the cross beam and can move along the cross beam;

[0009] Wherein, a driving mechanism for driving the support to move on the track is provided on the support, and the driving mechanism includes a driving motor and a traveling wheel. A first gear is arranged on the driving motor, a second gear is arranged on the traveling wheel, and the first gear meshes with the second gear.

[0010] A clutch assembly is arranged between the traveling wheel and the second gear. The clutch assembly includes a first state and a second state and a switching mechanism for switching between the first state and the second state. In the first state, torque can be transmitted between the second gear and the traveling wheel, and in the second state, torque cannot be transmitted between the second gear and the traveling wheel.

[0011] In this technical solution, the crossbeam and two support frames form a portal structure. The support frames are arranged on the track and can move along the track. A hoisting mechanism is arranged on the crossbeam, thus forming a gantry. The driving mechanism drives the support frames to move along the track. The driving mechanism includes a driving motor and a walking wheel, and the driving motor and the walking wheel are in meshing transmission through a first gear and a second gear. A clutch assembly is arranged between the walking wheel and the second gear, and a switching mechanism for switching states is also arranged. When the gantry needs to move, the clutch assembly switches to the first state. When the gantry needs to stop at a certain position, it switches to the second state. In the second state, it can prevent the driving motor from being accidentally started, resulting in the movement of the gantry and causing danger, thus improving safety.

[0012] In the above technical solution, further, the clutch assembly includes:

[0013] A first connecting shaft, which is connected to the walking wheel;

[0014] A first bearing, which is placed at one end where the first connecting shaft is connected to the walking wheel, and the second gear is placed on the first bearing so that the first connecting shaft and the second gear can rotate relative to each other;

[0015] A cage, which is placed between the first connecting shaft and the second gear;

[0016] A second bearing, which is placed between the cage and the first connecting shaft and enables the cage and the first connecting shaft to rotate relative to each other;

[0017] Wherein, the switching mechanism can hold the space between the cage and the first connecting shaft and limit the relative rotation between the second gear and the cage and the relative rotation between the cage and the first connecting shaft.

[0018] In this technical solution, the first connecting shaft is connected to the walking wheel. A first bearing is arranged at one end close to the connection with the walking wheel, and the second gear is placed on the first bearing so that the second gear can rotate relative to the first connecting shaft. At the same time, due to the thickness of the first bearing, there is a space between the first gear and the first connecting shaft.

[0019] A cage and a second bearing that enables the cage to rotate relative to the first connecting shaft are arranged in the space between the first gear and the first bearing. Due to the thickness of the second bearing, there is a space between the cage and the first connecting shaft, and there is also a space between the cage and the second gear.

[0020] When the switching mechanism is inserted into the space between the cage and the first connecting shaft, it can limit the relative rotation between the second gear and the cage and the relative rotation between the cage and the first connecting shaft, so that the torque of the driving motor can be transmitted to the walking wheel and the gantry can move. When the switching mechanism is pulled out, the torque cannot be transmitted, and even if the driving motor is started, the gantry cannot move.

[0021] In the above technical solution, further, the switching mechanism includes:

[0022] An embedding portion capable of being inserted into a space between the first connecting shaft and the retaining frame;

[0023] Wherein, a movable component is arranged on the retaining frame, and a friction component is arranged on the movable component. After the embedded part is inserted into the space between the first connecting shaft and the retaining frame, the movable component is driven to move, and the movable component dynamically drives the friction component to fit with the second gear.

[0024] In this technical solution, the embedded part can interfere with the movable component after being inserted into the space between the first connecting shaft and the retaining frame, so that the movable component can move, and the friction component arranged on the movable component can fit with the inner wall of the second gear, thereby limiting the rotation between the second gear and the first connecting shaft.

[0025] In the above technical solution, further, the embedded part includes:

[0026] an annular body inserted into the space between the first connecting shaft and the retaining frame;

[0027] A guide portion, which is disposed on the annular body;

[0028] A triggering portion, which is disposed on the outer wall of the annular body;

[0029] Wherein, a guide groove is provided on the first connecting shaft, the guide part can be embedded in the guide groove, and the trigger part can drive the movable component to move.

[0030] In the technical solution, the space between the first connecting shaft and the retaining frame is an annular structure, so the main body of the embedded part is an annular body. A guide portion is arranged on the annular body, and a guide groove is arranged on the first connecting shaft and the retaining frame. The guide groove can cooperate with the guide portion to facilitate the insertion of the annular body. The triggering portion is a protruding structure that can drive the movable component to move, so that the friction component fits the inner wall of the second gear.

[0031] In the above technical solution, further, the active component includes:

[0032] An active cavity is disposed on the retainer and communicates the space between the first connecting shaft and the retainer with the space between the second gear and the retainer;

[0033] A telescopic member, which is disposed in the active cavity and is movable in a vertical direction along the active cavity;

[0034] An abutment member disposed at one end of the telescopic member facing the first connecting shaft;

[0035] Wherein, one end of the telescopic member facing the second gear is connected to a friction assembly, and the contact member and the triggering portion cooperate to be able to push the telescopic member to move.

[0036] In this technical solution, an activity cavity is provided on the cage, and the telescopic member is placed in the activity cavity and can be telescopic. One end of the telescopic member facing the connected shaft is provided with a contact member, and the contact member cooperates with the triggering portion. One end of the facility member facing the second gear is connected to a friction assembly. The contact member and the triggering portion cooperate to be able to push the telescopic member to move, so that the friction assembly is in close contact with the inner wall of the second gear, thereby restricting the relative rotation between the second gear and the first connecting shaft.

[0037] In the above technical solution, further, the contact member includes a first guiding surface and a first fixing surface, and the triggering portion includes a second guiding surface and a second fixing surface.

[0038] The first guiding surface and the second guiding surface are inclined surfaces that cooperate with each other, the first fixing surface and the second fixing surface are flat surfaces, and when the triggering portion moves, the first guiding surface moves along the second guiding surface, and then the first fixing surface and the second fixing surface move to the same horizontal plane and fit together to make the telescopic member move.

[0039] In this technical solution, the first guiding surface and the second guiding surface are inclined surfaces that cooperate with each other. When the embedding portion is inserted into the space between the first connecting shaft and the cage, the first guiding surface can move along the second guiding surface, so that the contact member and the telescopic rod connecting the contact member move in the vertical direction of the activity cavity. Through the movement of the telescopic rod, the friction assembly moves to be in close contact with the inner wall of the second gear. The embedding portion is further inserted into the space between the first connecting shaft and the cage, so that the first fixing surface and the second fixing surface fit together. At this time, the friction assembly remains in close contact with the inner wall of the second gear, thereby restricting the relative rotation between the second gear and the first connecting shaft.

[0040] In the above technical solution, further, the friction assembly includes:

[0041] A fixed bracket, which is connected to the movable assembly;

[0042] A first friction plate, which is placed on the fixed bracket;

[0043] A second friction plate, which is placed on the fixed bracket;

[0044] Wherein, the fixed bracket is an arc-shaped structure adapted to the inner wall of the second gear, and a plurality of placing grooves are provided on the fixed bracket. The first friction plate and the second friction plate are arranged in the placing grooves. Both the first friction plate and the second friction plate are arc-shaped structures.

[0045] The same friction plate is placed in the same placing groove, and it is either the first friction plate or the second friction plate.

[0046] Different friction plates are placed in adjacent placement grooves so that the first friction plate and the second friction plate are arranged at intervals.

[0047] The first friction plate and the second friction plate are arranged in an interleaved manner so that the middle position of the second friction plate corresponds to the position where two adjacent first friction plates are connected.

[0048] In this technical solution, the fixed bracket is arc-shaped and connected to the movable assembly. Multiple placement grooves are provided on the fixed bracket, and the first friction plate and the second friction plate are arranged in the placement grooves. Both the first friction plate and the second friction plate are arc-shaped and elastic. Multiple first friction plates or second friction plates in the same placement groove are arranged in contact with each other front and back. Different friction plates are placed in adjacent placement grooves so that the first friction plate and the second friction plate are arranged at intervals based on the placement grooves. The middle position of the second friction plate corresponds to the position where two adjacent first friction plates are connected, so that the first friction plate and the second friction plate in adjacent placement grooves are arranged in an interleaved manner.

[0049] When contacting the inner wall of the second gear, the first friction plate and the second friction plate deform and apply pressure to the inner wall of the second gear, thereby increasing the friction with the second gear and restricting the relative rotation between the second gear and the first connecting shaft.

[0050] The present invention also provides a control method for a material conveying device, including the following steps:

[0051] S1: Rotate the cage so that the contact member on the cage corresponds to the trigger portion on the insertion portion;

[0052] S2: Align the guiding member on the insertion portion with the guiding groove on the first connecting shaft;

[0053] S3: Push the insertion portion so that the guiding member is inserted into the guiding groove and at the same time the insertion portion is also inserted into the space between the first connecting portion and the cage;

[0054] S4: Continue to push the insertion portion so that the first guiding surface and the second guiding surface come into contact, and the first guiding surface moves along the second guiding surface;

[0055] S5: Push the insertion portion to the end so that the first fixing surface and the second fixing surface are attached, at this time the telescopic member is lifted, and the friction assembly is attached to the inner wall of the second gear.

[0056] The beneficial effects of the present invention are:

[0057] 1. A clutch assembly and a switching mechanism are provided during the torque transmission between the driving motor and the traveling wheels, which can maintain the torque transmission when the gantry moves, cut off the torque transmission when the gantry stops, and will not drive the gantry to move when the driving motor starts, ensuring safety.

[0058] 2. The state of the clutch assembly is switched through the embedding part, and the torque transmission between the driving motor and the walking wheel is controlled by changing the pressure between the friction assembly and the inner wall of the second gear. When it is necessary to stop the gantry, the physical contact is directly disengaged, with high reliability.

[0059] 3. The friction assembly is composed of first friction plates and second friction plates that are arranged at intervals and staggered, which can ensure the stability of the friction force between the friction assembly and the inner wall of the second gear and the stability of torque transmission. Brief Description of the Drawings

[0060] Figure 1 is a schematic structural view of the present invention;

[0061] Figure 2 is Figure 1 the schematic structural view of part A in

[0062] Figure 3 is a schematic structural view of the clutch assembly of the present invention;

[0063] Figure 4 is Figure 3 the schematic structural view of part B in

[0064] Figure 5 is a schematic structural view of the embedding part;

[0065] Figure 6 is a schematic structural view of the friction assembly; wherein the reference numerals are: 100, track; 110, support frame; 120, cross beam; 130, hoisting mechanism; 140, walking wheel; 150, driving motor; 151, first gear; 200, second gear; 210, first bearing; 300, first connecting shaft; 310, guiding groove; 400, cage; 410, second bearing; 420, movable cavity; 500, telescopic member; 510, abutting member; 511, first guiding surface; 512, first fixing surface; 600, fixing bracket; 610, first friction plate; 620, second friction plate; 630, placing groove; 700, embedding part; 710, guiding part; 720, triggering part; 721, second guiding surface; 722, second fixing surface. Detailed Embodiment

[0066] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings:

[0067] Embodiment 1:

[0068] Refer to Figure 1 , Figure 2 , this embodiment provides a material conveying device, including:

[0069] There are two parallel tracks 100;

[0070] There are two support frames 110 which are respectively placed on the two tracks 100, and the support frames 110 can move along the tracks 100;

[0071] A cross beam 120 spans across the two support frames 110;

[0072] A hoisting mechanism 130 is placed on the cross beam 120 and can move along the cross beam 120;

[0073] A driving mechanism for driving the support frame 110 to move on the track 100 is provided on the support frame 110. The driving mechanism includes a driving motor 150 and a walking wheel 140. A first gear 151 is arranged on the driving motor 150, and a second gear 200 is arranged on the walking wheel 140. The first gear 151 meshes with the second gear 200.

[0074] A clutch assembly is arranged between the walking wheel 140 and the second gear 200. The clutch assembly includes a first state and a second state and a switching mechanism for switching between the first state and the second state. In the first state, torque can be transmitted between the second gear 200 and the walking wheel 140. In the second state, torque cannot be transmitted between the second gear 200 and the walking wheel 140.

[0075] The cross beam 120 and the two support frames 110 form a door-like structure. The support frames 110 are arranged on the tracks 100 and can move along the tracks 100. A hoisting mechanism 130 is arranged on the cross beam 120, thus forming a gantry. The driving mechanism drives the support frame 110 to move along the track 100. The driving mechanism includes a driving motor 150 and a walking wheel 140. The driving motor 150 and the walking wheel 140 are in meshing transmission through the first gear 151 and the second gear 200. A clutch assembly and a switching mechanism for setting the switching state are arranged between the walking wheel 140 and the second gear 200. When the gantry needs to move, the clutch assembly switches to the first state. When the gantry needs to stop at a certain position, it switches to the second state. In the second state, it can prevent the driving motor 150 from being accidentally started, resulting in the movement of the gantry and causing danger, improving safety.

[0076] Embodiment 2:

[0077] This embodiment provides a material conveying device. In addition to the technical features of the above embodiment, this embodiment further includes the following technical features.

[0078] Reference Figure 3 , the clutch assembly includes:

[0079] A first connecting shaft 300 which is connected to the walking wheel 140;

[0080] The first bearing 210 is placed at one end of the first connecting shaft 300 connected to the traveling wheel 140, and the second gear 200 is placed on the first bearing 210 to enable relative rotation between the first connecting shaft 300 and the second gear 200;

[0081] The cage 400 is placed between the first connecting shaft 300 and the second gear 200;

[0082] The second bearing 410 is placed between the cage 400 and the first connecting shaft 300 to enable relative rotation between the cage 400 and the first connecting shaft 300;

[0083] The switching mechanism can maintain the space between the cage 400 and the first connecting shaft 300 and limit the relative rotation between the second gear 200 and the cage 400 and the relative rotation between the cage 400 and the first connecting shaft 300.

[0084] The first connecting shaft 300 is connected to the traveling wheel 140. A first bearing 210 is provided at one end of the first connecting shaft 300 close to the connection with the traveling wheel 140. The second gear 200 is placed on the first bearing 210 to enable the second gear 200 to rotate relative to the first connecting shaft 300. At the same time, due to the thickness of the first bearing 210, there is a space between the first gear 151 and the first connecting shaft 300.

[0085] A cage 400 and a second bearing 410 that enables the cage 400 to rotate relative to the first connecting shaft 300 are provided in the space between the first gear 151 and the first bearing 210. Due to the thickness of the second bearing 410, there is a space between the cage 400 and the first connecting shaft 300, and there is also a space between the cage 400 and the second gear 200.

[0086] When the switching mechanism is inserted into the space between the cage 400 and the first connecting shaft 300, it can limit the relative rotation between the second gear 200 and the cage 400 and the relative rotation between the cage 400 and the first connecting shaft 300, so that the torque of the driving motor 150 can be transmitted to the traveling wheel 140 to move the gantry. When the switching mechanism is pulled out, the torque cannot be transmitted, and even if the driving motor 150 is started, the gantry cannot be moved.

[0087] Embodiment 3:

[0088] This embodiment provides a material conveying device. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0089] Reference Figure 3 、 Figure 4 、 Figure 5 , the switching mechanism includes:

[0090] An embedding portion 700 that can be inserted into the space between the first connecting shaft 300 and the retaining frame 400;

[0091] The retaining frame 400 is provided with a movable component, and the movable component is provided with a friction component. The embedded portion 700 is inserted into the space between the first connecting shaft 300 and the retaining frame 400 to drive the movable component to move, and the movable component dynamically drives the friction component to fit with the second gear 200.

[0092] After the embedded portion 700 is inserted into the space between the first connecting shaft 300 and the retaining frame 400, it can interfere with the movable component, so that the movable component can move, and the friction component arranged on the movable component can fit with the inner wall of the second gear 200, thereby limiting the rotation between the second gear 200 and the first connecting shaft 300.

[0093] In this embodiment, further, the embedding portion 700 includes:

[0094] an annular body inserted into the space between the first connecting shaft 300 and the retaining frame 400;

[0095] A guide portion 710, which is disposed on the annular body;

[0096] A trigger portion 720, which is disposed on the outer wall of the annular body;

[0097] The first connecting shaft 300 is provided with a guide groove 310 , the guide portion 710 can be embedded in the guide groove 310 , and the trigger portion 720 can drive the movable component to move.

[0098] The space between the first connecting shaft 300 and the retaining frame 400 is an annular structure, so the main body of the embedded part 700 is an annular body. A guide portion 710 is arranged on the annular body, and a guide groove 310 is arranged on the first connecting shaft 300 and the retaining frame 400. The guide groove 310 can cooperate with the guide portion 710 to facilitate the insertion of the annular body. The trigger portion 720 is a protruding structure that can drive the movable component to move, so that the friction component fits with the inner wall of the second gear 200. The inner wall of the retaining frame 400 is hexagonal and the outer wall is circular. The inner wall of the annular body is circular and the outer wall is hexagonal, so as to correspond to the retaining frame.

[0099] Embodiment 4:

[0100] This embodiment provides a material conveying device. In addition to the technical features of the above-mentioned embodiments, this embodiment also includes the following technical features.

[0101] refer to Figure 3 , Figure 4 , Figure 5 , the active components include:

[0102] The movable cavity 420 is placed on the cage 400 and communicates the space between the first connecting shaft 300 and the cage 400 with the space between the second gear 200 and the cage 400;

[0103] The telescopic member 500 is placed inside the movable cavity 420 and can move in the vertical direction along the movable cavity 420;

[0104] The abutting member 510 is placed at one end of the telescopic member 500 facing the first connecting shaft 300;

[0105] One end of the telescopic member 500 facing the second gear 200 is connected to a friction assembly, and the abutting member 510 and the triggering portion 720 can push the telescopic member 500 to move. The movable cavity 420 is provided on the cage 400, and the telescopic member 500 is placed inside the movable cavity 420 and can be telescopic. The abutting member 510 is provided at one end of the telescopic member 500 facing the connected shaft, and the abutting member 510 cooperates with the triggering portion 720. One end of the facility member facing the second gear 200 is connected to a friction assembly. The cooperation between the abutting member 510 and the triggering portion 720 can push the telescopic member 500 to move, so that the friction assembly is in close contact with the inner wall of the second gear 200, thereby restricting the relative rotation between the second gear 200 and the first connecting shaft 300.

[0106] The abutting member 510 includes a first guiding surface 511 and a first fixing surface 512, and the triggering portion 720 includes a second guiding surface 721 and a second fixing surface 722. The first guiding surface 511 and the second guiding surface 721 are mutually cooperating inclined surfaces, and the first fixing surface 512 and the second fixing surface 722 are flat surfaces. When the triggering portion 720 moves, the first guiding surface 511 moves along the second guiding surface 721, and then the first fixing surface 512 and the second fixing surface 722 move to fit on the same horizontal plane to make the telescopic member 500 move.

[0107] The first guiding surface 511 and the second guiding surface 721 are mutually cooperating inclined surfaces. When the inserting portion 700 is inserted into the space between the first connecting shaft 300 and the cage 400, the first guiding surface 511 can move along the second guiding surface 721, so that the abutting member 510 and the telescopic rod connecting the abutting member 510 move in the vertical direction of the movable cavity 420. Through the movement of the telescopic rod, the friction assembly moves to be in close contact with the inner wall of the second gear 200. The inserting portion 700 is further inserted into the space inside the first connecting shaft 300 and the cage 400, so that the first fixing surface 512 and the second fixing surface 722 are in contact. At this time, the friction assembly remains in contact with the inner wall of the second gear 200, thereby restricting the relative rotation between the second gear 200 and the first connecting shaft 300.

[0108] Embodiment 5:

[0109] This embodiment provides a material conveying device. In addition to the technical features of the above embodiment, this embodiment further includes the following technical features.

[0110] Reference Figure 4 、 Figure 6 , the friction assembly includes:

[0111] A fixed bracket 600, which is connected to the movable assembly;

[0112] A first friction plate 610, which is placed on the fixed bracket 600;

[0113] A second friction plate 620, which is placed on the fixed bracket 600;

[0114] The fixed bracket 600 is an arc-shaped structure adapted to the inner wall of the second gear 200. A plurality of placement grooves 630 are provided on the fixed bracket 600. The first friction plate 610 and the second friction plate 620 are arranged in the placement grooves 630. Both the first friction plate 610 and the second friction plate 620 are arc-shaped structures.

[0115] The same friction plate is placed in the same placement groove 630, which is either the first friction plate 610 or the second friction plate 620. Different friction plates are placed in adjacent placement grooves 630 so that the first friction plate 610 and the second friction plate 620 are arranged at intervals. The first friction plate 610 and the second friction plate 620 are staggered so that the middle position of the second friction plate 620 corresponds to the position where two adjacent first friction plates 610 are connected.

[0116] The fixed bracket 600 is arc-shaped and connected to the movable assembly. A plurality of placement grooves 630 are provided on the fixed bracket 600. The first friction plate 610 and the second friction plate 620 are arranged in the placement grooves 630. Both the first friction plate 610 and the second friction plate 620 are arc-shaped and elastic. A plurality of first friction plates 610 or second friction plates 620 are arranged in contact with each other front and back in the same placement groove 630. Different friction plates are placed in adjacent placement grooves 630 so that the first friction plate 610 and the second friction plate 620 are arranged at intervals based on the placement grooves 630. The middle position of the second friction plate 620 corresponds to the position where two adjacent first friction plates 610 are connected, so that the first friction plate 610 and the second friction plate 620 in adjacent placement grooves 630 are staggered.

[0117] When in contact with the inner wall of the second gear 200, the first friction plate 610 and the second friction plate 620 deform and exert pressure on the inner wall of the second gear 200, thereby increasing the friction with the second gear 200 and restricting the relative rotation between the second gear 200 and the first connecting shaft 300.

[0118] Embodiment 6:

[0119] This embodiment provides a control method for a material conveying device, including the following steps:

[0120] S1: Rotate the cage 400 to align the contact member 510 on the cage 400 with the trigger portion 720 on the embedding portion 700.

[0121] S2: Align the guide member on the embedding portion 700 with the guide groove 310 on the first connecting shaft 300.

[0122] S3: Push the embedding portion 700 so that the guide member is inserted into the guide groove 310 and at the same time the embedding portion 700 is also inserted into the space between the first connecting portion and the cage 400.

[0123] S4: Continue to push the embedding portion 700 so that the first guide surface 511 and the second guide surface 721 come into contact, and the first guide surface 511 moves along the second guide surface 721.

[0124] S5: Push the embedding portion 700 to the end so that the first fixing surface 512 and the second fixing surface 722 are in contact. At this time, the telescopic member 500 is lifted, and the friction assembly is in contact with the inner wall of the second gear 200.

[0125] The above embodiments are only the preferred embodiments of the present invention, not all embodiments. Other embodiments obtained by those of ordinary skill in the art based on the above embodiments without creative efforts shall fall within the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A material conveying device, characterized in that, Comprising: Two parallel tracks (100); Two support frames (110) respectively placed on the two tracks (100), and the support frames (110) can move along the tracks (100); A cross beam (120) spanning across the two support frames (110); A hoisting mechanism (130) placed on the cross beam (120) and capable of moving along the cross beam (120); Wherein, a driving mechanism for driving the support frame (110) to move on the track (100) is provided on the support frame (110). The driving mechanism includes a driving motor (150) and a traveling wheel (140). A first gear (151) is provided on the driving motor (150), and a second gear (200) is provided on the traveling wheel (140). The first gear (151) meshes with the second gear (200). A clutch assembly is provided between the traveling wheel (140) and the second gear (200). The clutch assembly includes a first state and a second state, and a switching mechanism for switching between the first state and the second state. In the first state, torque can be transmitted between the second gear (200) and the traveling wheel (140). In the second state, torque cannot be transmitted between the second gear (200) and the traveling wheel (140). The clutch assembly includes: A first connecting shaft (300) connected to the traveling wheel (140); A first bearing (210) placed at one end where the first connecting shaft (300) is connected to the traveling wheel (140). The second gear (200) is placed on the first bearing (210) to enable relative rotation between the first connecting shaft (300) and the second gear (200). A cage (400) placed between the first connecting shaft (300) and the second gear (200); A second bearing (410) placed between the cage (400) and the first connecting shaft (300) to enable relative rotation between the cage (400) and the first connecting shaft (300). Wherein, the switching mechanism can insert into the space between the cage (400) and the first connecting shaft (300) to limit the relative rotation between the second gear (200) and the cage (400) and the relative rotation between the cage (400) and the first connecting shaft (300). The switching mechanism includes: An embedding part (700) capable of inserting into the space between the first connecting shaft (300) and the cage (400); Wherein, a movable component is provided on the cage (400), a friction component is provided on the movable component. After the embedding part (700) inserts into the space between the first connecting shaft (300) and the cage (400), it drives the movable component to act, and the movable component drives the friction component to fit with the second gear (200). The embedding part (700) includes: An annular body inserted into the space between the first connecting shaft (300) and the cage (400); A guiding part (710) placed on the inner wall of the annular body; A triggering part (720) placed on the outer wall of the annular body; Wherein, a guide groove (310) is provided on the first connecting shaft (300), the guide portion (710) can be embedded in the guide groove (310), and the trigger portion (720) can drive the movable component to move; The activity components include: An active cavity (420) is disposed on the retaining frame (400) and allows the space between the first connecting shaft (300) and the retaining frame (400) to communicate with the space between the second gear (200) and the retaining frame (400); A telescopic member (500) is disposed in the active cavity (420) and is movable in a vertical direction along the active cavity (420); A resisting member (510) is disposed at one end of the telescopic member (500) facing the first connecting shaft (300); Wherein, one end of the telescopic member (500) facing the second gear (200) is connected to the friction assembly, and the resistance member (510) cooperates with the triggering portion (720) to promote the movement of the telescopic member (500); The resisting member (510) comprises a first guide surface (511) and a first fixing surface (512), and the triggering portion (720) comprises a second guide surface (721) and a second fixing surface (722). The first guide surface (511) and the second guide surface (721) are mutually matched inclined surfaces, and the first fixed surface (512) and the second fixed surface (722) are planes. When the trigger part (720) moves, the first guide surface (511) moves along the second guide surface (721), and then the first fixed surface (512) and the second fixed surface (722) move to the same horizontal plane and fit together, so that the telescopic component (500) moves.

2. The material conveying device according to claim 1, wherein The friction assembly comprises: A fixed bracket (600) connected to the movable assembly; A first friction plate (610) is placed on a fixed bracket (600); A second friction plate (620) is placed on the fixed bracket (600); The fixed bracket (600) is an arc-shaped structure adapted to the inner wall of the second gear (200), and a plurality of placement grooves (630) are provided on the fixed bracket (600). The first friction plate (610) and the second friction plate (620) are arranged in the placement grooves (630). The first friction plate (610) and the second friction plate (620) are both arc-shaped structures. The same friction plate is placed in the same placement groove (630), and both are the first friction plate (610) or the second friction plate (620). Different friction plates are placed in adjacent placement grooves (630) so that the first friction plate (610) and the second friction plate (620) are arranged at intervals. The first friction plates (610) and the second friction plates (620) are arranged alternately so that the middle position of the second friction plate (620) corresponds to the position of the connection between two adjacent first friction plates (610).

3. A control method for the material conveying device according to any one of claims 1-2, characterized in that, The following steps are involved: S1: rotating the retaining frame (400) so that the resisting member (510) on the retaining frame (400) corresponds to the position of the triggering portion (720) on the embedding portion (700); S2: Aligning the guide member on the embedded portion (700) with the guide groove (310) on the first connecting shaft (300); S3: Push the embedding part (700) so that the guide member is inserted into the guide groove (310) and at the same time the embedding part (700) is also inserted into the space between the first connecting part and the cage (400); S4: Continue to push the embedding part (700) so that the first guiding surface (511) contacts the second guiding surface (721), and the first guiding surface (511) moves along the second guiding surface (721); S5: Push the embedding part (700) to the end so that the first fixing surface (512) and the second fixing surface (722) are fitted. At this time, the telescopic member (500) is lifted, and the friction assembly is fitted to the inner wall of the second gear (200).

Images