Hydraulic lifting type intermediate roller replacement device based on material conveying and control method thereof

Abstract

The application relates to a roller technical field, in particular to a hydraulic lifting type intermediate roller replacement device based on material transmission and a control method thereof, which comprises a track plate and a bracket assembly, one side of the track plate is fixedly connected with the bracket assembly, a rail groove is arranged in the inner side of the track plate, a rack is fixedly connected at the lower end of the rail groove arranged in the track plate, a displacement assembly is slidably connected at the inner side of the rail groove arranged in the track plate, a replacement assembly is fixedly connected at the top end of the displacement assembly, the displacement assembly comprises a movable table assembly, the movable table assembly comprises a folding plate, a bead groove is arranged in the inner side of the folding plate, the inner side of the bead groove is attached to the outer side of a steel ball, a servo motor is fixedly connected to the inner side of the folding plate, a gear is fixedly connected to the tail end of the main shaft of the servo motor, in the application, the device can quickly and safely replace the damaged roller of the intermediate roller of the belt conveyor, and the labor intensity and the safety hidden danger caused by the traditional worker contacting the belt and lifting operation are avoided.

Description

Technical Field

[0001] This invention relates to the field of idler roller technology, specifically to a hydraulic lifting intermediate idler roller replacement device and its control method based on material transfer. Background Technology

[0002] Idler rollers are important components of belt conveyors. They come in many types and are numerous, accounting for 35% of the total cost of a belt conveyor and bearing more than 70% of the resistance. Therefore, the quality of idler rollers is particularly important. The function of idler rollers is to support the conveyor belt and the weight of the materials. Their operation must be flexible and reliable, and they must reduce the friction between the conveyor belt and the idler rollers. They play a key role in the lifespan of the conveyor belt, which accounts for more than 30% of the total cost of the conveyor. Idler rollers are classified according to their use into self-aligning idler rollers, impact idler rollers, trough idler rollers, and parallel idler rollers.

[0003] Trough idlers typically consist of two side idlers and one flat idler, with a trough angle of 30 degrees. For detachable belt conveyors, the three idlers of the trough idler are hinged together. This design helps to improve the stability of the conveyor belt and reduce belt deviation, thereby extending the service life of the conveyor belt.

[0004] In trough idlers, the angle between the intermediate idler and the side idlers is usually 35º, which limits the replacement space. Especially when replacing idlers on belt conveyors with limited space, traditional idler replacement methods require maintenance personnel to access the belt to perform lifting and installation operations, which increases labor intensity and safety hazards. Therefore, to address the above problems, a hydraulic lifting intermediate idler replacement device based on material transfer and its control method are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic lifting intermediate idler roller replacement device and its control method based on material transfer, so as to solve the problem that traditional idler roller replacement methods require maintenance personnel to contact the belt to perform lifting and installation operations, which increases labor intensity and safety hazards.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A hydraulic lifting intermediate idler roller replacement device and its control method based on material transfer includes a track plate and a bracket assembly. The bracket assembly is fixedly connected to one side of the track plate. A track groove is formed on the inner side of the track plate. A rack is fixedly connected to the lower end of the track groove. A displacement assembly is slidably connected to the inner side of the track groove. A replacement assembly is fixedly connected to the top of the displacement assembly. The displacement assembly includes a movable platform assembly, which includes a folding plate. A ball groove is formed on the inner side of the folding plate, and the inner side of the ball groove fits against the outer side of a steel ball. A servo motor is fixedly connected to the inner side of the folding plate. A gear is fixedly connected to the end of the servo motor's main shaft. A toothed groove is formed on the inner side of the folding plate near the gear. A protruding rod is fixedly connected to the left side of the movable platform assembly, and a rubber sheet is fixedly connected to the outer side of the protruding rod. A section of the upper end of the movable platform assembly... A second lug is fixedly connected to the side, and a hydraulic rod is rotatably connected to the inner side of the second lug. A first lug is rotatably connected to the outer side of the upper end of the hydraulic rod. A limit stop is fixedly connected to the upper end of the movable platform assembly. The replacement assembly includes a base block. An inclined plate is fixedly connected to the left side of the base block. A movable spring groove is opened on the inner side of the left end of the inclined plate. A linear spring is fixedly connected to the lower end of the movable spring groove on the inclined plate. An electromagnet is fixedly connected to the lower end of the movable spring groove on the inclined plate. A square iron plate is fixedly connected to the top of the linear spring. A slanted clamping plate is fixedly connected to the top of the square iron plate. A mounting groove is opened on the upper part of the left end of the inclined plate. A rear support groove is opened on the inner side of the inclined plate. The folding plate is slidably connected to the inner side of the track groove opened on the track plate. The outer side of the gear meshes with the upper end of the rack. The top end of the first lug is fixedly connected to the bottom end of the base block.

[0008] As a further optimization of the present invention, the bracket assembly includes a connecting support plate, a support plate is fixedly connected to the top of the connecting support plate, the top of the support plate is in contact with the outer side of the ball bearing, a limit ring is fixedly connected to the outer side of the ball bearing, a three-column rod is rotatably connected to the inner side of the ball bearing, and a roller body is fixedly connected to the outer side of the three-column rod.

[0009] As a further optimization of the present invention, the following features are provided: the number of pallets is several groups, each group of pallets contains two pallets, the pallets have an arc-shaped groove near the ball bearing, the ball bearing and the roller body are spaced apart, the three-column rod is shaped as three cylindrical sections, the front and rear ends of the three-column rod have larger diameters, the limiting ring is shaped as a ring, and the number of limiting rings is the same as the number of ball bearings.

[0010] As a further optimization of the present invention, the number of track plates is two, and a track groove is opened on the inner side of each of the two track plates. The track groove passes through one end of the track plate, and the front end and rear end of the connecting support plate are fixedly connected to the top of the track plate by bolts.

[0011] As a further optimization of the present invention, the side view shape of the movable platform assembly is U-shaped, the front end and the rear end of the movable platform assembly are both embedded in the track groove opened in the track plate, and the center of the limiting block and the center of the base block are on the same vertical line.

[0012] As a further optimization of the present invention, the upper part of the front end and the upper part of the rear end of the limiting block are both fixed with second ear seats. The second ear seat has a shaft hole on its inner side. The hydraulic rod is fixedly connected to a shaft column near the outer side of the shaft hole of the second ear seat. The upper end of the hydraulic rod is fixedly connected to a shaft column near the outer side of the first ear seat.

[0013] As a further optimization of the present invention, the number of each group of protruding rods is two, the rubber sheet is fixed between the two protruding rods, the rubber sheet is arc-shaped, and the center of the rubber sheet is on the same vertical plane as the left end of the inclined plate.

[0014] As a further optimization of the present invention, the bead groove is spherical in shape, the bead groove penetrates the lower end of the folded plate, the number of bead grooves is the same as the number of steel balls, steel balls are installed at both the front and rear ends of the folded plate, and the bottom end of the steel ball is in contact with the lower end of the track groove of the track plate.

[0015] As a further optimization of the present invention, the following features are provided: the number of inclined plates is two; the movable spring groove passes through the upper end of the inclined plate; the movable spring groove is shaped as a rectangular body at both ends; the square iron plate is shaped as a rectangular body; the inclined plate is composed of a rectangular body and a pointer triangle; and the inclined plate protrudes from the lower end of the groove on the inclined plate.

[0016] A control method for a hydraulic lifting intermediate idler roller changing device based on material transfer.

[0017] S1: To achieve replacement without the need for staff and ensure the safety of replacement, the entire replacement assembly is moved inside the track plate by the servo motor control device. The two ends of the intact roller body are placed on the upper part of the two rear grooves. When the servo motor is started, the replacement assembly moves towards the ball bearing. When the servo motor is started, the replacement assembly moves and the intact roller body is aligned with the arc groove of the support plate. Then, the hydraulic rod moves the replacement assembly downward. At this time, the electromagnet is activated, and the electromagnet attracts the square iron plate magnetically.

[0018] S2: When the device is stored to reduce space occupation, the hydraulic rod is activated at the same time. The hydraulic rod retracts and the entire replacement component moves downward. When the bottom of the base block is in contact with the top of the limit block;

[0019] S3: For the specified bracket assembly, when the replacement device accurately moves the lower end of the roller body, the servo motor is started to drive the gear to rotate. The gear rotates at the lower end of the tooth groove. The distance the folding plate moves is precisely controlled by the start time of the servo motor, and the steel balls roll inside the ball groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In this invention, the device can quickly and safely replace damaged idlers of the intermediate idlers of the belt conveyor by means of the base block, inclined plate, rear support groove and rubber sheet. This avoids the labor intensity and safety hazards caused by the need for workers to contact the belt and lift the rollers in the traditional replacement method. At the same time, the device is small in size and suitable for narrow spaces, which improves maintenance efficiency and safety.

[0022] 2. In this invention, by setting hydraulic rods, limit blocks and first ear seats, the idler roller replacement device can reduce space occupation by retracting after the replacement operation is completed, making it easy to store. By controlling the overall movement and tilting state of the device, it can be ensured that the device occupies the least space when not in use, which is convenient for storage and transportation. This design improves space utilization.

[0023] 3. In this invention, by setting up a servo motor, rack and pinion, and track plate, the device can effectively control the moving distance of the folding plate by precisely controlling the start-up time of the servo motor, thereby achieving precise control of the position of the replacement device. At the same time, the setting of steel balls reduces the friction between the folding plate and the track plate when the folding plate moves, thereby improving the operating efficiency and accuracy of the entire system. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the track slab structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the bracket assembly structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the connecting support plate structure of the present invention;

[0028] Figure 5 For the present invention Figure 4 A schematic diagram of the structure at point A;

[0029] Figure 6 This is a schematic diagram of the hydraulic rod structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the folded plate structure of the present invention;

[0031] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at point B;

[0032] Figure 9 This is a schematic diagram of the base block structure of the present invention;

[0033] Figure 10 For the present invention Figure 9 A schematic diagram of the structure at point C.

[0034] In the diagram: 1. Track slab;

[0035] 2. Bracket assembly; 21. Connecting support plate; 22. Support plate; 23. Ball bearing; 24. Limiting ring; 25. Three-post rod; 26. Idler roller body;

[0036] 3. Gear rack;

[0037] 4. Displacement assembly; 41. Movable table assembly; 411. Folding plate; 412. Bead groove; 413. Steel ball; 414. Servo motor; 415. Gear; 416. Tooth groove; 42. Protruding rod; 43. Rubber sheet; 44. Second ear seat; 45. Hydraulic rod; 46. First ear seat; 47. Limit stop;

[0038] 5. Replace components; 51. Base block; 52. Inclined plate; 53. Movable spring groove; 54. Linear spring; 55. Electromagnet; 56. Square iron plate; 57. Angled clamping plate; 58. Installation groove; 59. Rear support groove;

[0039] 6. Rail groove. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] Please see Figure 1-10 The present invention provides a technical solution:

[0043] A hydraulic lifting intermediate idler roller replacement device and its control method based on material transfer includes a track plate 1 and a bracket assembly 2. The bracket assembly 2 is fixedly connected to one side of the track plate 1. A track groove 6 is opened on the inner side of the track plate 1. A rack 3 is fixedly connected to the lower end of the track groove 6. A displacement assembly 4 is slidably connected to the inner side of the track groove 6. A replacement assembly 5 is fixedly connected to the top of the displacement assembly 4. The displacement assembly 4 includes a movable table assembly 41. The movable table assembly 41 includes a folding plate 411. A ball groove 412 is opened on the inner side of the folding plate 411. The inner side of the ball groove 412 fits against the outer side of the steel ball 413. A servo motor 414 is fixedly connected to the inner side of the folding plate 411. A gear 415 is fixedly connected to the end of the main shaft of the servo motor 414. A toothed groove 416 is opened on the inner side of the folding plate 411 near the gear 415. A protruding rod 42 is fixedly connected to the left side of the movable table assembly 41. A rubber sheet 43 is fixedly connected to the outer side of the protruding rod 42. A second ear seat 44 is fixedly connected, and a hydraulic rod 45 is rotatably connected to the inner side of the second ear seat 44. A first ear seat 46 is rotatably connected to the outer side of the upper end of the hydraulic rod 45. A limit stop 47 is fixedly connected to the upper end of the movable platform assembly 41. The replacement assembly 5 includes a base block 51. An inclined plate 52 is fixedly connected to the left side of the base block 51. A movable spring groove 53 is opened on the inner side of the left end of the inclined plate 52. A linear spring 54 is fixedly connected to the lower end of the movable spring groove 53 opened on the inclined plate 52. An electromagnet 55 is fixedly connected to the lower end of the movable spring groove 53, a square iron plate 56 is fixedly connected to the top of the linear spring 54, a slanted clamping plate 57 is fixedly connected to the top of the square iron plate 56, a mounting groove 58 is provided on the upper part of the left end of the slanted plate 52, a rear support groove 59 is provided on the inner side of the slanted plate 52, the folding plate 411 is slidably connected to the inner side of the track groove 6 opened in the track plate 1, the outer side of the gear 415 meshes with the upper end of the rack 3, and the top end of the first ear seat 46 is fixedly connected to the bottom end of the base block 51.

[0044] As a further implementation of this solution, the bracket assembly 2 includes a connecting support plate 21, with a support plate 22 fixedly connected to the top of the connecting support plate 21. The top of the support plate 22 is in contact with the outer side of the ball bearing 23. A limit ring 24 is fixedly connected to the outer side of the ball bearing 23. A three-column rod 25 is rotatably connected to the inner side of the ball bearing 23. A roller body 26 is fixedly connected to the outer side of the three-column rod 25. There are several sets of support plates 22, with two support plates in each set. An arc-shaped groove is provided on the support plate 22 near the ball bearing 23. The ball bearing 23 and the roller... The main bodies 26 are spaced apart. The three-column rod 25 is shaped like three cylindrical sections. The diameters of the cylinders at the front and rear ends of the three-column rod 25 are larger. The limiting ring 24 is shaped like a ring. The number of limiting rings 24 is the same as the number of ball bearings 23, which provides a stable support structure and ensures the stability and reliability of the idler roller during operation. The spacing between the ball bearings 23 and the idler roller body 26 reduces the direct contact between the conveyor belt and the idler roller, thereby reducing friction and helping to reduce the wear of the conveyor belt and extend its service life.

[0045] As a further implementation of this scheme, there are two track plates 1. The inner side of each track plate 1 is provided with a track groove 6. The track groove 6 passes through one end of the track plate 1. The front and rear ends of the connecting support plate 21 are fixedly connected to the top of the track plate 1 by bolts, so that the replacement device can move inside the track plate 1.

[0046] As a further implementation of this solution, the side view shape of the movable platform assembly 41 is U-shaped. The front and rear ends of the movable platform assembly 41 are embedded in the rail groove 6 opened in the track plate 1. The center of the limiting block 47 is on the same vertical line as the center of the base block 51, which serves to limit the descent of the base block 51.

[0047] As a further implementation of this solution, the upper front and upper rear ends of the limit block 47 are fixed with second ear seats 44. The inner side of the second ear seat 44 is provided with a shaft hole. The hydraulic rod 45 is fixedly connected to the outer side of the shaft hole of the second ear seat 44 with a shaft column. The upper end of the hydraulic rod 45 is fixedly connected to the outer side of the first ear seat 46 with a shaft column. There are two protruding rods 42 in each group. The rubber sheet 43 is fixed between the two protruding rods 42. The rubber sheet 43 is arc-shaped. The center of the rubber sheet 43 is on the same vertical plane as the left end of the inclined plate 52. The U-shaped side view design of the movable platform assembly 41 optimizes the space utilization, so that the device occupies the least space when not in use, which is convenient for storage and transportation. It is also convenient to raise the entire assembly 5 for replacement, which improves the flexibility of operation.

[0048] As a further implementation of this solution, the bead groove 412 is spherical in shape and passes through the lower end of the folding plate 411. The number of bead grooves 412 is the same as the number of steel balls 413. Steel balls 413 are installed at both the front and rear ends of the folding plate 411. The bottom end of the steel ball 413 fits into the lower end of the track groove 6 opened in the track plate 1. The space occupied is reduced by the retraction action, which is convenient for storage. By controlling the overall movement and tilting state of the device, it can be ensured that the device occupies the least space when not in use, which is convenient for storage and transportation. This design improves the space utilization rate.

[0049] As a further implementation of this scheme, there are two inclined plates 52. The movable spring groove 53 passes through the upper end of the inclined plate 52. The movable spring groove 53 is shaped like a rectangle at both ends. The square iron plate 56 is shaped like a rectangle. The inclined plate 57 is composed of a rectangle and a pointer triangle. The inclined plate 57 protrudes from the lower end of the groove 58 on the inclined plate 52, which facilitates the replacement of the designated idler body 26. The damaged idler is replaced quickly and safely, avoiding the labor intensity and safety hazards caused by workers contacting the belt and lifting operations.

[0050] Workflow: To achieve safe replacement of intermediate idlers without manual intervention, the entire replacement assembly 5 is moved inside the track plate 1 via a servo motor 414 control device. Once the replacement device reaches the designated right end of the idler body 26, the hydraulic rod 45 lifts the entire replacement assembly 5. Before this, the two ends of the intact idler body 26 are placed on top of the two rear guide grooves 59, with the two inclined plates 52 enclosing the two limiting rings 24. When the bottom end of the mounting groove 58 on the base block 51 is flush with the bottom end of the ball bearing 23, the servo motor 414 is activated, causing the entire replacement assembly 5 to move towards the track plate 1. As the ball bearing 23 approaches, according to the shape of the oblique clamp 57, after the ball bearing 23 contacts the oblique clamp 57, the oblique clamp 57 will move downward. When the oblique clamp 57 contacts the ball bearing 23, under the squeezing action of the ball bearing 23, the oblique clamp 57 drives the square iron plate 56 to be housed inside the movable spring groove 53. At the same time, the oblique clamp 57 squeezes the linear spring 54, causing the linear spring 54 to deform. When the ball bearing 23 moves away from the oblique clamp 57, under the elastic force of the linear spring 54, the oblique clamp 57 bulges out again from the lower part of the mounting groove 58. The square iron plate 56 acts as a support for the oblique clamp 57. The limiting action ensures that, under the obstruction of the inclined clamp 57, the damaged idler body 26 is positioned inside the mounting groove 58. When the hydraulic rod 45 is activated, the replacement assembly 5 and the idler body 26 move upwards a small distance. Once the ball bearing 23 of the damaged idler body 26 disengages from the arc-shaped groove at the upper end of the support plate 22, the replacement assembly 5 moves as a whole when the servo motor 414 is activated. After the intact idler body 26 aligns with the arc-shaped groove of the support plate 22, the replacement assembly 5 is moved downwards by the hydraulic rod 45 until the damaged idler body 26 disengages from the belt. At this point, the electromagnet 55 is activated, and the electromagnet 55... The square iron plate 56 is magnetically attracted, and the square iron plate 56 and the slanted clamping plate 57 are stored inside the movable spring groove 53. At the same time, the linear spring 54 is elastically deformed again. Since the right end of the mounting groove 58 is sloping, the idler roller body 26 will roll out from the mounting groove 58 and fall above the rubber sheet 43. The servo motor 414 is started to move the replacement device away from the pallet 22. The damaged idler roller body 26 is transported out by the replacement device, and the replacement of the idler roller body 26 is completed. The device is convenient and quick to replace, without the need for personnel to operate, which improves the safety of maintenance. Moreover, the device is small in size and suitable for narrow working spaces.

[0051] To achieve the storage of the device and reduce space occupation, hydraulic rod 45 is activated simultaneously. Hydraulic rod 45 retracts. During retraction, the lower end of hydraulic rod 45 is rotatably connected to the inside of the second ear seat 44 via a shaft, and the upper end of hydraulic rod 45 is rotatably connected to the inside of the first ear seat 46 via a shaft. After multiple hydraulic rods 45 retract, the replacement assembly 5 moves downward. When the bottom end of the base block 51 is in contact with the top end of the limiting block 47, the storage of the device is completed. The limiting block 47 limits the movement distance of the base block 51, so that the stored hydraulic rods 45 are in an inclined state, which facilitates the raising of the replacement assembly 5 again. At the same time, the top end of the stored base block 51 is lower than the bottom end of the connecting support plate 21, and the bottom end of the movable platform assembly 41 is flush with the bottom end of the track plate 1. This device can reduce space occupation and facilitate device movement.

[0052] For the designed bracket assembly 2, when the lower end of the roller body 26 of the replacement device is accurately moved, the servo motor 414 is started to drive the gear 415 to rotate. The gear 415 rotates at the lower end of the tooth groove 416, which passes through the lower part of the folding plate 411 to facilitate the meshing of the gear 415 with the rack 3. When the gear 415 rotates, due to the meshing with the rack 3, the gear 415 drives the servo motor 414 and the folding plate 411 to move. The distance the folding plate 411 moves is precisely controlled by the start-up time of the servo motor 414. When the folding plate 411 moves, the steel ball 413 rolls inside the ball groove 412 due to the friction between the steel ball 413 and the track plate 1. At the same time, the folding plate 411 moves inside the track groove 6. The setting of the steel ball 413 can reduce the friction between the folding plate 411 and the track plate 1 when it moves. At this time, the position of the replacement device can be precisely controlled.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic lifting intermediate idler roller changing device based on material transfer, comprising a track plate (1) and a bracket assembly (2), characterized in that: A bracket assembly (2) is fixedly connected to one side of the track plate (1), a track groove (6) is opened on the inner side of the track plate (1), a rack (3) is fixedly connected to the lower end of the track groove (6) opened on the track plate (1), a displacement assembly (4) is slidably connected to the inner side of the track groove (6) opened on the track plate (1), and a replacement assembly (5) is fixedly connected to the top of the displacement assembly (4). The displacement assembly (4) includes a movable platform assembly (41), which includes a folding plate (411). A bead groove (412) is provided on the inner side of the folding plate (411). The inner side of the bead groove (412) is in contact with the outer side of the steel ball (413). A servo motor (414) is fixedly connected to the inner side of the folding plate (411). A gear (415) is fixedly connected to the end of the main shaft of the servo motor (414). A tooth groove (416) is provided on the inner side of the folding plate (411) near the gear (415). A protruding rod (42) is fixedly connected to the left side of the movable platform assembly (41). A rubber sheet (43) is fixedly connected to the outer side of the protruding rod (42). A second ear seat (44) is fixedly connected to one side of the upper end of the movable platform assembly (41). A hydraulic rod (45) is rotatably connected to the inner side of the second ear seat (44). 45) The upper outer side is rotatably connected to a first ear seat (46), the upper end of the movable platform assembly (41) is fixedly connected to a limit stop (47), the replacement assembly (5) includes a base block (51), the left side of the base block (51) is fixedly connected to an inclined plate (52), the inner side of the left end of the inclined plate (52) is provided with a movable spring groove (53), the lower end of the movable spring groove (53) of the inclined plate (52) is fixedly connected to a linear spring (54), the lower end of the movable spring groove (53) of the inclined plate (52) is fixedly connected to an electromagnet (55), the top end of the linear spring (54) is fixedly connected to a square iron plate (56), the top end of the square iron plate (56) is fixedly connected to a slanted plate (57), the upper part of the left end of the inclined plate (52) is provided with a placement groove (58), and the inner side of the inclined plate (52) is provided with a rear support groove (59). The folding plate (411) is slidably connected to the inner side of the track groove (6) opened in the track plate (1), the outer side of the gear (415) meshes with the upper end of the rack (3), and the top of the first ear seat (46) is fixedly connected to the bottom end of the base block (51).

2. The hydraulic lifting intermediate idler roller replacement device based on material transfer according to claim 1, characterized in that: The bracket assembly (2) includes a connecting support plate (21), a support plate (22) is fixedly connected to the top of the connecting support plate (21), the top of the support plate (22) is in contact with the outer side of the ball bearing (23), a limit ring (24) is fixedly connected to the outer side of the ball bearing (23), a three-column rod (25) is rotatably connected to the inner side of the ball bearing (23), and a roller body (26) is fixedly connected to the outer side of the three-column rod (25).

3. The hydraulic lifting intermediate idler roller replacement device based on material transfer according to claim 2, characterized in that: The number of pallets (22) is several groups, and each group of pallets (22) has two. The pallets (22) have an arc-shaped groove near the ball bearing (23). There is a gap between the ball bearing (23) and the roller body (26). The three-column rod (25) is in the shape of three cylindrical sections. The limiting ring (24) is in the shape of a ring. The number of limiting rings (24) is the same as the number of ball bearings (23).

4. The hydraulic lifting intermediate idler roller replacement device based on material transfer according to claim 2, characterized in that: There are two track plates (1), and a track groove (6) is opened on the inner side of each track plate (1). The track groove (6) passes through one end of the track plate (1). The front end and rear end of the connecting support plate (21) are fixedly connected to the top of the track plate (1) by bolts.

5. The hydraulic lifting intermediate idler roller replacement device based on material transfer according to claim 1, characterized in that: The side view shape of the movable platform assembly (41) is U-shaped. The front and rear ends of the movable platform assembly (41) are embedded in the rail groove (6) opened in the track plate (1). The center of the limiting block (47) and the center of the base block (51) are on the same vertical line.

6. The hydraulic lifting intermediate idler roller replacement device based on material transfer according to claim 1, characterized in that: The upper front part and the upper rear part of the limiting block (47) are both fixed with the second ear seat (44). The second ear seat (44) has a shaft hole on its inner side. The hydraulic rod (45) is fixedly connected to the shaft column near the outer side of the shaft hole of the second ear seat (44). The upper end of the hydraulic rod (45) is fixedly connected to the shaft column near the outer side of the first ear seat (46).

7. The hydraulic lifting intermediate idler roller replacement device based on material transfer according to claim 1, characterized in that: The number of each set of protruding rods (42) is two, and the rubber sheet (43) is fixed between the two protruding rods (42). The rubber sheet (43) is arc-shaped, and the center of the rubber sheet (43) is on the same vertical plane as the left end of the inclined plate (52).

8. The hydraulic lifting intermediate idler roller replacement device based on material transfer according to claim 1, characterized in that: The bead groove (412) is spherical in shape. The bead groove (412) passes through the lower end of the folding plate (411). The number of bead grooves (412) is the same as the number of steel balls (413). Steel balls (413) are installed at both the front and rear ends of the folding plate (411). The bottom end of the steel ball (413) is in contact with the lower end of the track groove (6) opened on the track plate (1).

9. The hydraulic lifting intermediate idler roller replacement device based on material transfer according to claim 1, characterized in that: There are two inclined plates (52). The movable spring groove (53) passes through the upper end of the inclined plate (52). The movable spring groove (53) is rectangular at both ends. The square iron plate (56) is rectangular. The inclined plate (57) is composed of a rectangular and a right-angled triangle. The inclined plate (57) protrudes from the lower end of the inclined plate (52) where the mounting groove (58) is opened.

10. A control method for a hydraulic lifting intermediate idler roller changing device based on material transfer as described in any one of claims 1-9, characterized in that: S1: When replacing the device and ensuring the safety of the replacement, the device is moved inside the track plate (1) by the control of the servo motor (414). The two ends of the intact roller body (26) are placed on the upper part of the two rear grooves (59). Then, by starting the servo motor (414), the replacement component (5) moves towards the ball bearing (23). When the servo motor (414) is started, the replacement component (5) moves. When the intact roller body (26) is aligned with the arc groove of the pallet (22), the replacement component (5) is moved downward by the hydraulic rod (45). At this time, the electromagnet (55) is started. The electromagnet (55) is magnetically attracted to the square iron plate (56). S2: When the device is stored to reduce space occupation, the hydraulic rod (45) is activated at the same time. The hydraulic rod (45) retracts and the replacement component (5) moves downward. When the bottom of the base block (51) is in contact with the top of the limit block (47); S3: For the specified bracket assembly (2), the replacement device is accurately moved to the lower end of the roller body (26), the servo motor (414) is started to drive the gear (415) to rotate, the gear (415) rotates at the lower end of the tooth groove (416), and the distance of the folding plate (411) is precisely controlled by the start time of the servo motor (414), and the steel ball (413) rolls inside the ball groove (412).

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