Brake limiting protection device of heavy-load roller conveying mechanism

Abstract

The invention relates to the technical field of transportation, and discloses a heavy-load roller conveying mechanism brake limiting protection device which comprises a conveyor body, a plurality of sets of rollers are rotationally arranged on the conveyor body, a fixing box is arranged below the end of the conveyor body, and a brake seat is fixed to the top of the fixing box. Brake pads are arranged on the brake seats in a sliding mode, rotating rods are fixed to the ends of one set of rollers, and brake discs are fixed to the ends of the rotating rods; a limiting seat is fixed to the outer surface of the fixing box, and a limiting plate is slidably arranged at the top of the limiting seat. According to the technical scheme, when brake limiting protection needs to be carried out, the brake pad abuts against the brake disc, one set of rollers are braked, meanwhile, in the braking process, the limiting plate can stretch out of the position between the two rollers, and therefore goods sliding on the rollers are limited and protected, and the safety during braking is improved.

Description

Technical Field

[0001] The invention relates to the technical field of transportation, in particular to a brake limit protection device for a heavy-load roller conveying mechanism. Background Art

[0002] The roller conveyor mechanism is a conveyor composed of several groups of rollers. It specifically utilizes multiple groups of rollers to rotate synchronously so that the goods are transported on the surface of the rollers. Due to the high strength of the rollers, the weight of the goods being transported can also be increased when conveying through the rollers, thereby facilitating the transportation of different goods.

[0003] During the use of the roller conveyor mechanism, in order to ensure the safety of transportation, a brake mechanism needs to be set at the end of the conveyor for braking when emergency transportation needs to be stopped. However, since the surface of the roller is relatively smooth and the brake mechanism generally does not provide limit protection for the goods, after the roller brakes, the goods will still slide on the roller conveyor for a distance due to inertia, which may cause the goods near the end to slide out of the end of the roller conveyor, thereby increasing the possibility of damage to the goods. Summary of the invention

[0004] The present invention provides a brake limit protection device for a heavy-loaded roller conveyor mechanism. When braking, a limit plate can extend from between two rollers, thereby providing limit protection for goods sliding on the rollers, solving the problem mentioned in the above background technology that after the rollers are braked, the goods will still slide on the roller conveyor for a distance due to inertia, which may cause the goods near the end to slide out from the end of the roller conveyor, thereby increasing the possibility of damage to the goods.

[0005] The present invention provides the following technical solutions: a brake limit protection device for a heavy-load roller conveying mechanism, comprising a conveyor body, on which a plurality of groups of rollers are rotatably arranged, a fixed box is arranged below the end of the conveyor body, a first hydraulic oil groove is opened inside the fixed box, a first piston plate is slidably arranged in the first hydraulic oil groove, a brake seat is fixed on the top of the fixed box, a brake pad is slidably arranged on the brake seat, a rotating rod is fixed at the end of one group of the rollers, a brake disc is fixed at the end of the rotating rod, and the brake pad slides inside the first hydraulic oil groove through the first piston plate to brake the brake disc;

[0006] A limiting seat is fixed on the outer surface of the fixed box, a limiting plate is slidably provided on the top of the limiting seat, a second hydraulic oil groove is opened inside the fixed box, a second piston plate is slidably provided inside the second hydraulic oil groove, a transmission rod is fixed between the first piston plate and the second piston plate, and the limiting plate slides inside the second hydraulic oil groove through the second piston plate to perform lifting and lowering actions.

[0007] As an optional scheme of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, a servo electric cylinder is installed on one side of the fixed box, and the output end of the servo electric cylinder is fixedly connected to the first piston plate, and a first oil delivery groove connected to the first hydraulic oil groove is provided inside the fixed box, and a third hydraulic oil groove is provided inside the brake seat, and a first oil delivery pipe is provided to connect the third hydraulic oil groove and the top of the first oil groove, and a drive groove is provided inside the brake seat, and the drive groove is connected to the third hydraulic oil groove, and a drive plate is slidably provided inside the drive groove, and a drive column is fixed between the drive plate and the brake pad.

[0008] As an optional scheme of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, a fourth hydraulic oil groove is opened inside the limit seat, a lifting plate is slidably arranged inside the fourth hydraulic oil groove, the bottom of the limit plate is fixedly connected to the lifting plate, and a second oil delivery groove is arranged between the fourth hydraulic oil groove and the second hydraulic oil groove.

[0009] As an optional scheme of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, a protective plate is slidably provided on the top of the limit plate, an inner cylinder is elastically provided inside the limit plate, a storage cavity is provided inside the inner cylinder, a movable plate is slidably provided inside the storage cavity, a connecting rod is fixed between the movable plate and the protective plate, a groove is provided on the inner wall of the limit seat, a third oil groove is provided on the lifting plate, a second oil pipe connected to the third oil groove is provided inside the limit plate, and an end of the second oil pipe is connected to the storage cavity.

[0010] As an optional solution of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, a sliding groove is opened inside the limit plate, the inner cylinder is slidably arranged in the sliding groove, a protrusion is fixed on the top of the inner cylinder, and a first spring is fixed between the protrusion and the inner wall of the sliding groove.

[0011] As an optional scheme of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, a limiting groove is provided on the lifting plate, a second sliding cavity is provided inside the limiting seat, a second electric push rod is fixed inside the second sliding cavity, a limiting block for clamping inside the limiting groove is fixed to the output end of the second electric push rod, a movable groove is provided inside the limiting plate, and the second oil pipe is slidably arranged in the movable groove.

[0012] As an optional scheme of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, a slot is provided on the bottom wall of the storage cavity, a first sliding cavity is provided inside the movable plate, a first electric push rod is fixed in the first sliding cavity, a slide plate is fixed to the output end of the first electric push rod, the slide plate is slidably arranged in the first sliding cavity, a telescopic rod is fixed to the lower surface of the slide plate, a block for being engaged in the slot is fixed to the bottom end of the telescopic rod, and a second spring is fixed between the slide plate and the block.

[0013] As an optional solution of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, a rotating groove is opened on the surface of the limiting plate, a rotating shaft is rotatably arranged at the top of the rotating groove, a rotating plate is fixed on the rotating shaft, a telescopic support plate is slidably arranged inside the limiting plate, and the bottom end of the rotating plate is movably arranged inside the telescopic support plate.

[0014] As an optional solution of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, a boss is fixed on the top of the inner cylinder, a tooth plate is fixed on the boss, the tooth plate is slidably connected to the limit plate, a gear is keyed on the circumference of the rotating shaft, and the tooth plate is meshed with the gear.

[0015] As an optional scheme of the brake limit protection device of the heavy-loaded roller conveying mechanism described in the present invention, the telescopic support plate includes a first support plate, a second support plate and a third support plate connected in sequence, the second support plate is slidably connected to the first support plate, the third support plate is slidably connected to the second support plate, a limit groove for the sliding of the rotating plate is opened inside the third support plate, and a limit protrusion slidably arranged inside the limit groove is fixed at the bottom end of the rotating plate.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the brake limit protection device of the heavy-loaded roller conveying mechanism, when the brake limit protection is performed, the first piston plate is pushed to move in the first hydraulic oil groove by the servo electric cylinder, and the hydraulic oil inside the first hydraulic oil groove is filled into the third hydraulic oil groove through the first oil delivery groove and the first delivery pipe, and then filled into the driving groove through the third hydraulic oil groove, so that the driving plate drives the brake pad to move, so that the brake pad brakes the brake disc. At the same time, when the first piston plate moves, the second piston plate is driven to move in the second hydraulic oil groove by the transmission rod, and the hydraulic oil inside the second hydraulic oil groove is filled into the fourth hydraulic oil groove through the second output groove, so that the lifting plate rises, thereby driving the limit plate to rise, prompting the limit plate to extend from between the two groups of rollers, so that the extended limit plate is used to limit the goods at the end of the conveyor body, thereby increasing the safety of the goods during braking.

[0018] 2. In the brake limit protection device of the heavy-loaded roller conveying mechanism, when the limit plate rises to the highest point, the hydraulic oil in the fourth hydraulic oil tank is filled into the storage chamber through the groove, the third oil tank and the second oil pipe, so that the movable plate moves inside the storage chamber and pushes the protective plate out from the limit plate. After the protective plate is completely pushed out, the movable plate engages with the inner cylinder, so that the protective plate and the inner cylinder move synchronously. When the protective plate is hit by the cargo, the protective plate drives the inner cylinder to move, so that the first spring is compressed, thereby buffering the impact. It can not only protect the cargo, but also reduce the impact on the limit plate, thereby further improving safety.

[0019] 3. In the brake limit protection device of the heavy-duty roller conveying mechanism, when the impact is large, the protective plate is retracted into the limit plate, the inner cylinder drives the tooth plate to move, the tooth plate drives the gear to rotate, the gear drives the shaft to rotate, the shaft drives the rotating plate to rotate, and the rotating plate drives the telescopic support plate to extend, so that the telescopic support plate extends to the upper surface of one side of the roller, so that a triangular structure is formed between the limit plate, the rotating plate and the telescopic support plate. When the impact is large, the telescopic support plate contacts the upper surface of the roller, thereby increasing the stability of the limit plate and reducing the situation where the limit plate is bent and cannot be reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a three-dimensional structural cross-sectional view of the fixed box and the limiting seat part of the present invention.

[0022] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0023] Figure 4 It is a longitudinal cross-sectional view of the limiting seat and the limiting plate of the present invention.

[0024] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle.

[0025] Figure 6 It is a structural schematic diagram of the left side surface of the limiting plate of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the right side surface of the limiting plate of the present invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged view of center C.

[0028] Fig. 9 It is a schematic structural diagram of the protective plate and the rotating plate part of the present invention.

[0029] Fig.10 For the present invention Fig. 9 Enlarged view of point D in the middle.

[0030] Fig.11 For the present invention Fig. 9 Enlarged view of point E in the middle.

[0031] Fig.12 It is a schematic structural diagram of the telescopic support plate part in the present invention.

[0032] Fig.13 For the present invention Figure 4 Enlarged view of point F in the middle.

[0033] In the figure: 1, conveyor body; 2, roller; 3, fixed box; 4, first hydraulic oil tank; 5, first piston plate; 6, brake seat; 7, brake pad; 8, rotating rod; 9, brake disc; 10, limit seat; 11, limit plate; 12, second hydraulic oil tank; 13, second piston plate; 14, transmission rod; 15, servo cylinder; 16, first oil tank; 17, third hydraulic oil tank; 18, first oil pipe; 19, driving tank; 20, driving plate; 21, driving column; 22, fourth hydraulic oil tank; 23, lifting plate; 24, second oil tank; 25, protective plate; 26, inner cylinder; 27, storage chamber; 28, movable plate; 29, connecting rod; 30, Groove; 31, third oil delivery groove; 32, second oil delivery pipe; 33, sliding groove; 34, protrusion; 35, first spring; 36, movable groove; 37, clamping groove; 38, first sliding cavity; 39, first electric push rod; 40, slide plate; 41, telescopic rod; 42, clamping block; 43, second spring; 44, rotating groove; 45, rotating shaft; 46, rotating plate; 47, telescopic support plate; 471, first support plate; 472, second support plate; 473, third support plate; 474, limiting groove; 48, protrusion; 49, tooth plate; 50, gear; 51, limiting protrusion; 52, limiting groove; 53, second sliding cavity; 54, second electric push rod; 55, limiting block. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For example, see Figure 1-Figure 13A brake limit protection device for a heavy-load roller conveying mechanism comprises a conveyor body 1, on which a plurality of rollers 2 are rotatably arranged, a fixed box 3 is arranged below the end of the conveyor body 1, a first hydraulic oil groove 4 is opened inside the fixed box 3, a first piston plate 5 is slidably arranged in the first hydraulic oil groove 4, a brake seat 6 is fixed on the top of the fixed box 3, a brake pad 7 is slidably arranged on the brake seat 6, a rotating rod 8 is fixed at the end of one group of rollers 2, a brake disc 9 is fixed at the end of the rotating rod 8, and the brake pad 7 brakes the brake disc 9 by sliding in the first hydraulic oil groove 4 through the first piston plate 5;

[0036] A limit seat 10 is fixed on the outer surface of the fixed box 3, a limit plate 11 is slidably arranged on the top of the limit seat 10, a second hydraulic oil groove 12 is opened inside the fixed box 3, a second piston plate 13 is slidably arranged inside the second hydraulic oil groove 12, a transmission rod 14 is fixed between the first piston plate 5 and the second piston plate 13, and the limit plate 11 slides inside the second hydraulic oil groove 12 through the second piston plate 13 to perform lifting and lowering actions;

[0037] A servo electric cylinder 15 is installed on one side of the fixed box 3, and the output end of the servo electric cylinder 15 is fixedly connected to the first piston plate 5. A first oil delivery groove 16 connected to the first hydraulic oil groove 4 is provided inside the fixed box 3, and a third hydraulic oil groove 17 is provided inside the brake seat 6. The third hydraulic oil groove 17 is connected to the top of the first oil delivery groove 16 and a first oil delivery pipe 18 is provided. A driving groove 19 is provided inside the brake seat 6, and the driving groove 19 is connected to the third hydraulic oil groove 17. A driving plate 20 is slidably provided inside the driving groove 19, and a driving column 21 is fixed between the driving plate 20 and the brake pad 7;

[0038] A fourth hydraulic oil groove 22 is provided inside the limit seat 10 , a lifting plate 23 is slidably provided inside the fourth hydraulic oil groove 22 , the bottom of the limit plate 11 is fixedly connected to the lifting plate 23 , and a second oil delivery groove 24 is provided between the fourth hydraulic oil groove 22 and the second hydraulic oil groove 12 .

[0039] In the present technical solution, several groups of rollers 2 on the conveyor body 1 are connected by chains and sprockets to achieve synchronous movement. The conveyor body 1 and the rollers 2 are prior art, not the innovation of the present application, and are not described in detail. The first piston plate 5 is sealed with the first hydraulic oil groove 4, the second piston plate 13 is sealed with the second hydraulic oil groove 12, the drive plate 20 is sealed with the drive groove 19, and the lifting plate 23 is sealed with the fourth hydraulic oil groove 22. When the conveyor body 1 needs to be braked, since several groups of rollers 2 are in synchronous motion, only one group of rollers 2 needs to be braked, such as Figure 2As shown, firstly, the servo electric cylinder 15 is used to push the first piston plate 5 to move rightward in the first hydraulic oil groove 4, and the hydraulic oil in the first hydraulic oil groove 4 is filled into the third hydraulic oil groove 17 through the first oil delivery groove 16 and the first oil delivery pipe 18, and then filled into the driving groove 19 through the third hydraulic oil groove 17. At this time, the driving plate 20 is pushed to move in the driving groove 19, and the driving plate 20 drives the brake pad 7 to move through the driving column 21, so that the brake pads 7 on both sides move in relative directions, and the brake disc 9 is frictionally braked, thereby completing the braking of the drum 2;

[0040] When the roller 2 brakes, the first piston plate 5 moves to the right, driving the transmission rod 14 to move, and the transmission rod 14 drives the second piston plate 13 to move to the right, and the hydraulic oil in the second hydraulic oil groove 12 is filled into the fourth hydraulic oil groove 22 through the second oil delivery groove 24. At this time, the lifting plate 23 is lifted up and moves upward, and the lifting plate 23 moves upward to drive the limit plate 11 to move upward, and the limit plate 11 is extended from between the two groups of rollers 2. The extended limit plate 11 is used to block the goods transported on the conveyor body 1 to prevent the goods from continuing to move forward a large distance due to inertia, causing the goods to fall from the conveyor body 1;

[0041] When the brake needs to be canceled, the first piston plate 5 is driven to reset to the left by the servo electric cylinder 15, and the hydraulic oil inside the drive groove 19 is sucked into the third hydraulic oil groove 17 by negative pressure adsorption, and then sucked back into the first hydraulic oil groove 4 through the first oil pipe 18 and the first oil groove 16. At this time, the two groups of brake pads 7 move to the two sides of the brake disc 9 and are no longer in contact with the brake disc 9, thereby releasing the brake; when the first piston plate 5 resets to the left, it also drives the transmission rod 14 to move to the left, and the transmission rod 14 moves to the left and drives the second piston plate 13 to reset to the left, and the hydraulic oil inside the fourth hydraulic oil groove 22 is sucked back into the second hydraulic oil groove 12 through the second oil groove 24, so that the lifting plate 23 moves downward, and the lifting plate 23 moves downward to drive the limit plate 11 to move downward, so that the limit plate 11 is reset.

[0042] In the second embodiment, when the limit plate 11 extends from between the two sets of rollers 2, due to the inertia of the goods, after the conveyor body 1 is braked, the goods may continue to slide a certain distance, and at this time, the limit plate 11 will be hit. During the collision, the goods may be damaged and the limit plate 11 may be bent. In view of this problem, this embodiment is an improvement made on the basis of the first embodiment. For details, please refer to Figure 1-Figure 13A protective plate 25 is slidably provided on the top of the limit plate 11, an inner cylinder 26 is elastically provided inside the limit plate 11, a receiving chamber 27 is provided inside the inner cylinder 26, a movable plate 28 is slidably provided inside the receiving chamber 27, a connecting rod 29 is fixed between the movable plate 28 and the protective plate 25, a groove 30 is provided on the inner wall of the limit seat 10, a third oil delivery groove 31 is provided on the lifting plate 23, a second oil delivery pipe 32 connected to the third oil delivery groove 31 is provided inside the limit plate 11, and an end of the second oil delivery pipe 32 is connected to the receiving chamber 27;

[0043] A sliding groove 33 is provided inside the limiting plate 11, and the inner cylinder 26 is slidably disposed in the sliding groove 33. A protrusion 34 is fixed on the top of the inner cylinder 26, and a first spring 35 is fixed between the protrusion 34 and the inner wall of the sliding groove 33;

[0044] A limiting groove 52 is formed on the lifting plate 23, a second sliding cavity 53 is formed inside the limiting seat 10, a second electric push rod 54 is fixed inside the second sliding cavity 53, a limiting block 55 for clamping inside the limiting groove 52 is fixed at the output end of the second electric push rod 54, a moving groove 36 is formed inside the limiting plate 11, and the second oil delivery pipe 32 is slidably arranged in the moving groove 36;

[0045] A card slot 37 is provided on the bottom wall of the storage cavity 27, and a first sliding cavity 38 is provided inside the movable plate 28. A first electric push rod 39 is fixed in the first sliding cavity 38, and a slide plate 40 is fixed to the output end of the first electric push rod 39. The slide plate 40 is slidably arranged in the first sliding cavity 38, and a telescopic rod 41 is fixed to the lower surface of the slide plate 40. A card block 42 for being connected to the card slot 37 is fixed to the bottom end of the telescopic rod 41, and a second spring 43 is fixed between the slide plate 40 and the card block 42.

[0046] In the present technical solution, the telescopic rod 41 includes an outer rod and an inner rod, the outer rod is sleeved on the circumference of the inner rod, and the inner rod can slide relative to the outer rod to realize the telescopic function; when the lifting plate 23 moves upward to drive the limit plate 11 to move upward, when the lifting plate 23 moves upward to the highest position, the second electric push rod 54 is started, pushing the limit block 55 to slide inside the second sliding cavity 53, pushing the limit block 55 into the limit groove 52, and using the limit block 55 to further limit the height of the lifting plate 23, and then the fourth hydraulic oil groove 22 continues to be filled with hydraulic oil. At this time, the hydraulic oil enters the third oil delivery groove 31 through the groove 30, and then enters the storage cavity 27 through the second oil delivery pipe 32. Figure 5 As shown, at this time, the hydraulic oil pushes the movable plate 28 to move to the left until the movable plate 28 moves to the leftmost end of the storage chamber 27, and the movable plate 28 pushes the protective plate 25 out of the limit plate 11 through the connecting rod 29, as shown in FIG. Fig.10As shown, the second spring 43 is initially in a compressed state. When the movable plate 28 moves to the leftmost end of the receiving chamber 27, the second spring 43 releases force and pushes the clamping block 42 into the clamping groove 37, so that the movable plate 28 and the inner cylinder 26 can move synchronously. At this time, when the limiting plate 11 rises to the highest point, the protective plate 25 is fully extended from the inside of the limiting plate 11.

[0047] Then, when the cargo hits the protection plate 25, the protection plate 25 drives the inner cylinder 26 to move rightward together through the connecting rod 29 and the movable plate 28. The inner cylinder 26 moves rightward and drives the protrusion 34 to move rightward. The protrusion 34 moves rightward so that the first spring 35 is compressed and stores force, so that the protection plate 25 can buffer the impact of the cargo.

[0048] When the brake is released, the first electric push rod 39 is first manually started to shrink the first electric push rod 39, pulling the slide plate 40 to move upward, and the slide plate 40 pulls the block 42 upward to move upward, so that the block 42 moves out of the slot 37, releasing the restriction between the movable plate 28 and the inner cylinder 26, and the first spring 35 releases the force, so that the inner cylinder 26 moves to the left and resets. At the same time, when the second hydraulic oil groove 12 sucks back the hydraulic oil from the inside of the fourth hydraulic oil groove 22, since the limiting block 55 is now stuck in the limiting groove 52, the lifting plate 23 cannot move downward. At this time, the hydraulic oil in the storage chamber 27 is first sucked into the fourth hydraulic oil groove 22 through the second oil pipe 32, the third oil groove 31, and the groove 30, so that the movable plate 28 is 8 moves to the right, the movable plate 28 moves to the right and drives the protective plate 25 to move to the right, so that the protective plate 25 is retracted into the limit plate 11 again, and the protective plate 25 is reset. After the reset of the protective plate 25 is completed, the hydraulic oil in the storage chamber 27 is completely sucked back into the fourth hydraulic oil groove 22. At this time, the second electric push rod 54 contracts, and pulls the limiting block 55 out of the limiting groove 52 and resets it to the second sliding cavity 53. Then the hydraulic oil in the fourth hydraulic oil groove 22 continues to be sucked into the second hydraulic oil groove 12. At this time, the lifting plate 23 moves downward and resets, driving the limit plate 11 to move downward and reset. After the reset is completed, the first electric push rod 39 extends and resets, so that the second spring 43 is compressed to its initial state.

[0049] In the third embodiment, goods of different weights have different inertias. When the heavy goods are buffered, the protective plate 25 may be pressed back into the limit plate 11 due to the heavy inertia of the goods. At this time, the limit plate 11 will be hit again, which may cause the limit plate 11 to bend and cause structural damage, affecting the reset action of the limit plate 11, thereby affecting the normal use of the device. To solve this problem, this embodiment is an improvement made on the basis of the second embodiment. For details, please refer to Figure 1-Figure 13A rotating groove 44 is provided on the surface of the limiting plate 11, a rotating shaft 45 is rotatably provided on the top of the rotating groove 44, a rotating plate 46 is fixed on the rotating shaft 45, a telescopic support plate 47 is slidably provided inside the limiting plate 11, and the bottom end of the rotating plate 46 is movably provided inside the telescopic support plate 47;

[0050] A boss 48 is fixed on the top of the inner cylinder 26, a tooth plate 49 is fixed on the boss 48, the tooth plate 49 is slidably connected to the limit plate 11, a gear 50 is keyed on the circumference of the rotating shaft 45, and the tooth plate 49 meshes with the gear 50;

[0051] The telescopic support plate 47 includes a first support plate 471, a second support plate 472 and a third support plate 473 which are connected in sequence. The second support plate 472 is slidably connected to the first support plate 471, and the third support plate 473 is slidably connected to the second support plate 472. A limiting groove 474 for sliding of the rotating plate 46 is provided inside the third support plate 473, and a limiting protrusion 51 slidably arranged inside the limiting groove 474 is fixed to the bottom end of the rotating plate 46.

[0052] In the present technical solution, after the block 42 is inserted into the slot 37, the protective plate 25 drives the inner cylinder 26 to move synchronously. When the cargo has a large impact on the protective plate 25, the protective plate 25 is pressed back to the inside of the limit plate 11 to the right. At this time, the protective plate 25 drives the inner cylinder 26 to move to the right. Fig. 9 and Fig.11 As shown, when the inner cylinder 26 moves to the right, the inner cylinder 26 drives the boss 48 to move to the right, the boss 48 moves to the right and drives the tooth plate 49 to move to the right, the tooth plate 49 moves to the right and drives the gear 50 to rotate, the gear 50 rotates and drives the shaft 45 to rotate, the shaft 45 rotates and drives the rotating plate 46 to rotate, so that the rotating plate 46 is rotated out of the rotating groove 44, the rotating plate 46 drives the telescopic support plate 47 to extend, and the telescopic support plate 47 is extended from the inside of the limiting plate 11, and the telescopic work can be realized by the first support plate 471, the second support plate 472 and the third support plate 473 of the telescopic support plate 47, and the limiting groove 474 provided in the third support plate 473 is used in the rotating groove 474. When the rotating plate 46 rotates, the bottom of the rotating plate 46 can slide upward relative to the limiting groove 474, thereby preventing the rotating plate 46 from being stuck. Through the above process, when the protective plate 25 is pressed back to the right into the limiting plate 11, the rotating plate 46 drives the telescopic support plate 47 to extend out of the limiting plate 11 to the longest length. At this time, the lower surface of the third support plate 473 contacts the upper surface of the roller 2 on one side. At this time, the limiting plate 11, the rotating plate 46 and the telescopic support plate 47 form a triangular structure. By utilizing the stability of the triangular structure, when subjected to a large impact, the telescopic support plate 47 contacts the upper surface of the roller 2 on one side, thereby preventing the limiting plate 11 from bending.

[0053] When the cargo is heavy, the inertia of the cargo directly presses the protective plate 25 back to the right inside the limit plate 11. At this time, the protective plate 25 is directly reset, and then the limit plate 11 is reset downward. First, the first electric push rod 39 is manually started to shrink the first electric push rod 39, pull the slide plate 40 to move upward, and the slide plate 40 pulls the block 42 upward to move the block 42 out of the slot 37, releasing the restriction between the movable plate 28 and the inner cylinder 26. The first spring 35 releases its force. Since the protective plate 25 is pressed back to the limit plate 11 to the right, the first spring 35 releases its force. The inside of the positioning plate 11 can no longer move, which is equivalent to the protection plate 25 being reset. At this time, when the hydraulic oil inside the storage chamber 27 is sucked into the fourth hydraulic oil groove 22, the first spring 35 releases force, causing the inner cylinder 26 to move leftward and reset. The inner cylinder 26 moves leftward and resets, driving the toothed plate 49 to move leftward and reset. The reset of the toothed plate 49 drives the gear 50 to rotate in the direction. The rotation of the gear 50 drives the rotating plate 46 to reset. The reset of the rotating plate 46 drives the reset of the extension support plate. After the extension support plate is reset, the limiting plate 11 performs a reset action.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A brake limit protection device for a heavy-load roller conveying mechanism, comprising a conveyor body (1), on which a plurality of rollers (2) are rotatably arranged, characterized in that: A fixed box (3) is arranged below the end of the conveyor body (1), a first hydraulic oil groove (4) is provided inside the fixed box (3), a first piston plate (5) is slidably arranged in the first hydraulic oil groove (4), a brake seat (6) is fixed on the top of the fixed box (3), a brake pad (7) is slidably arranged on the brake seat (6), a rotating rod (8) is fixed at the end of one group of the rollers (2), a brake disc (9) is fixed at the end of the rotating rod (8), and the brake pad (7) slides inside the first hydraulic oil groove (4) through the first piston plate (5) to brake the brake disc (9); A limiting seat (10) is fixed on the outer surface of the fixed box (3), a limiting plate (11) is slidably arranged on the top of the limiting seat (10), a second hydraulic oil groove (12) is provided inside the fixed box (3), a second piston plate (13) is slidably arranged inside the second hydraulic oil groove (12), a transmission rod (14) is fixed between the first piston plate (5) and the second piston plate (13), and the limiting plate (11) slides inside the second hydraulic oil groove (12) through the second piston plate (13) to perform a lifting action.

2. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 1 is characterized in that: A servo electric cylinder (15) is installed on one side of the fixed box (3), and the output end of the servo electric cylinder (15) is fixedly connected to the first piston plate (5). A first oil delivery groove (16) connected to the first hydraulic oil groove (4) is provided inside the fixed box (3). A third hydraulic oil groove (17) is provided inside the brake seat (6). A first oil delivery pipe (18) is provided at the top of the third hydraulic oil groove (17) and connected to the first oil delivery groove (16). A driving groove (19) is provided inside the brake seat (6). The driving groove (19) is connected to the third hydraulic oil groove (17). A driving plate (20) is slidably provided inside the driving groove (19), and a driving column (21) is fixed between the driving plate (20) and the brake pad (7).

3. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 2 is characterized in that: A fourth hydraulic oil groove (22) is provided inside the limit seat (10), a lifting plate (23) is slidably provided inside the fourth hydraulic oil groove (22), the bottom of the limit plate (11) is fixedly connected to the lifting plate (23), and a second oil delivery groove (24) is provided between the fourth hydraulic oil groove (22) and the second hydraulic oil groove (12).

4. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 3 is characterized in that: A protective plate (25) is slidably provided on the top of the limit plate (11), an inner cylinder (26) is elastically provided inside the limit plate (11), a storage chamber (27) is provided inside the inner cylinder (26), a movable plate (28) is slidably provided inside the storage chamber (27), a connecting rod (29) is fixed between the movable plate (28) and the protective plate (25), a groove (30) is provided on the inner wall of the limit seat (10), a third oil delivery groove (31) is provided on the lifting plate (23), a second oil delivery pipe (32) connected to the third oil delivery groove (31) is provided inside the limit plate (11), and an end of the second oil delivery pipe (32) is connected to the storage chamber (27).

5. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 4 is characterized in that: A sliding groove (33) is provided inside the limiting plate (11), and the inner cylinder (26) is slidably arranged in the sliding groove (33). A protrusion (34) is fixed on the top of the inner cylinder (26), and a first spring (35) is fixed between the protrusion (34) and the inner wall of the sliding groove (33).

6. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 5 is characterized in that: The lifting plate (23) is provided with a limiting groove (52), the limiting seat (10) is provided with a second sliding cavity (53), a second electric push rod (54) is fixed inside the second sliding cavity (53), a limiting block (55) for clamping inside the limiting groove (52) is fixed at the output end of the second electric push rod (54), a movable groove (36) is provided inside the limiting plate (11), and the second oil delivery pipe (32) is slidably arranged in the movable groove (36).

7. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 6 is characterized in that: A card slot (37) is provided on the bottom wall of the storage cavity (27), a first sliding cavity (38) is provided inside the movable plate (28), a first electric push rod (39) is fixed in the first sliding cavity (38), a slide plate (40) is fixed at the output end of the first electric push rod (39), the slide plate (40) is slidably arranged in the first sliding cavity (38), a telescopic rod (41) is fixed on the lower surface of the slide plate (40), a card block (42) for being carded in the card slot (37) is fixed at the bottom end of the telescopic rod (41), and a second spring (43) is fixed between the slide plate (40) and the card block (42).

8. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 7 is characterized in that: A rotating groove (44) is provided on the surface of the limiting plate (11), a rotating shaft (45) is rotatably provided at the top of the rotating groove (44), a rotating plate (46) is fixed on the rotating shaft (45), a telescopic support plate (47) is slidably provided inside the limiting plate (11), and the bottom end of the rotating plate (46) is movably provided inside the telescopic support plate (47).

9. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 8, characterized in that: A boss (48) is fixed on the top of the inner cylinder (26), a tooth plate (49) is fixed on the boss (48), the tooth plate (49) is slidably connected to the limit plate (11), a gear (50) is key-connected on the circumference of the rotating shaft (45), and the tooth plate (49) is meshed with the gear (50).

10. The brake limit protection device for a heavy-load roller conveyor mechanism according to claim 9, characterized in that: The telescopic support plate (47) comprises a first support plate (471), a second support plate (472) and a third support plate (473) which are connected in sequence, the second support plate (472) is slidably connected to the first support plate (471), the third support plate (473) is slidably connected to the second support plate (472), a limiting groove (474) for the sliding of the rotating plate (46) is provided inside the third support plate (473), and a limiting protrusion (51) slidably arranged inside the limiting groove (474) is fixed at the bottom end of the rotating plate (46).

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