A belt conveyor idler replacement device

Abstract

The present application belongs to the technical field of roller dismounting, in particular to a belt conveyor roller replacement device, comprising a support frame, a lifting plate is arranged above the support frame, further comprising: two inclined support plates, the two inclined support plates are respectively hinged on the top of the support frame on both sides, and the two inclined support plates are symmetrical, each of the two inclined support plates is provided with a lateral clamping assembly, and the lateral clamping assembly is used for supporting the inclined support plate. The present application can comprehensively support the trough conveyor belt, increase the stress area, improve the stability and safety of roller replacement, shorten the maintenance time, reduce the labor cost and safety risk, and can monitor the lifting pressure in real time, avoid excessive stretching of the belt, increase the operation space, and prewarn the belt slack damage, and can also effectively support the roller, optimize the dismounting mode, and improve the safety and convenience of roller replacement.

Description

Technical Field

[0001] This invention belongs to the field of idler roller assembly and disassembly technology, and in particular relates to an idler roller replacement device for a belt conveyor. Background Technology

[0002] Idler rollers are key components of belt conveyors. Their main function is to support the belt and materials, reduce running resistance, and ensure smooth belt operation. However, idler rollers are subject to material impact, friction, and environmental influences over a long period of time, which can lead to problems such as bearing damage, roller wear, and rotation jamming. If they are not replaced, they can easily cause belt misalignment and tearing, affecting conveying efficiency. Therefore, they need to be replaced regularly.

[0003] Currently, to facilitate idler replacement, the belt is typically lifted and supported at the idler to prevent it from pressing on the idler and affecting the replacement process. For example, a belt conveyor idler replacement device disclosed in patent publication number CN115401438B clamps the two sides of the belt and then lifts it. However, due to the limited area of ​​the clamping point, the belt is subjected to uneven force, and it is prone to detachment due to local stress concentration during the lifting process, posing a safety hazard. On the other hand, for trough conveyors, clamping on both sides cannot effectively support the middle part of the belt, causing the middle part of the belt to sag and failing to fully release the idler installation space, which greatly affects the efficiency and convenience of idler replacement. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a belt conveyor idler replacement device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a belt conveyor idler roller replacement device, comprising a support frame, a lifting plate disposed above the support frame, and further comprising:

[0006] Two diagonal bracing plates are respectively hinged to the top two sides of the support frame, and the two diagonal bracing plates are symmetrical. Both diagonal bracing plates are equipped with lateral snap-fit ​​components, and the lateral snap-fit ​​components are used to support the diagonal bracing plates.

[0007] A lifting unit is installed inside the support frame. The lifting unit is used to lift the lifting plate upward. A pressure detection component is installed on the top of the lifting unit, and the pressure detection component is used to detect the pressure between the lifting unit and the lifting plate.

[0008] A roller support unit is disposed on one side of the support frame, and the roller support unit is used to support the roller.

[0009] Preferably, both of the lateral snap-fit ​​assemblies include a side support plate hinged to the side wall of the diagonal brace plate. The lower end of the side wall of the side support plate near the diagonal brace plate is fixedly connected with a plurality of arc-shaped snap-fit ​​strips. The end of the lifting plate is provided with a U-shaped groove, and a cylinder is fixedly installed inside the U-shaped groove. The side support plate is snapped to the cylinder through the arc-shaped snap-fit ​​strips.

[0010] Preferably, the lifting unit includes a fixed platform fixedly installed inside the support frame. The side wall of the fixed platform and the side wall of the support frame are rotatably connected to a lead screw assembly. Movable platforms that slide horizontally inside the support frame are respectively provided on both sides of the fixed platform. The lead screw assembly is used to drive the two movable platforms to move in opposite directions. An electric drive assembly is installed at the end of the support frame and is used to drive the lead screw assembly. Fixed support plates are hinged to both sides of the top of the fixed platform. Movable support plates are hinged to the top of the two movable platforms on opposite sides. Two fixed lifting plates are provided below the lifting plate, and the two fixed support plates and the movable support plates are all hinged to the bottom of the fixed lifting plate on the same side.

[0011] Preferably, the pressure detection assembly includes a movable lifting plate disposed above two fixed lifting plates. Pressure sensors and multiple rubber support pads are fixedly installed between the two fixed lifting plates and the movable lifting plate on the same side. Multiple sliding rods are installed at the bottom of the movable lifting plate, and multiple sliding holes matching the sliding rods are opened on the end face of the fixed lifting plate. Multiple T-shaped sliders are installed at the top of the movable lifting plate, and a groove is opened at the bottom of the lifting plate, with each T-shaped slider slidably connected to the top of the groove.

[0012] Preferably, the idler roller support unit includes a movable frame slidably connected to the side wall of the support frame. The movable frame is equipped with a position adjustment component. A side plate is installed on the movable end of the position adjustment component. Two semi-circular support plates are provided on one side of the side plate. One end of the two semi-circular support plates is hinged together, and the other end of the two semi-circular support plates is jointly equipped with a locking component. An angle adjustment component is installed on the side plate to adjust the angle of the two semi-circular support plates.

[0013] Preferably, the electric drive assembly includes a mounting cover fixedly installed at the end of the support frame, and one end of the lead screw of the lead screw assembly extends to the inner side of the mounting cover. A drive motor is fixedly installed on the side wall of the mounting cover. A bevel gear assembly is installed on the drive end of the drive motor, and the drive motor drives the lead screw of the lead screw assembly to rotate through the bevel gear assembly. A microcontroller is installed on the side wall of the mounting cover, and the microcontroller controls the operation of the drive motor according to the electrical signals fed back from two pressure sensors. An encoder is installed on the drive end of the drive motor, and the encoder converts the number of rotations of the drive end of the drive motor into an electrical signal and feeds it back to the microcontroller.

[0014] Preferably, the position adjustment assembly includes a horizontal electric push rod fixedly inserted into the side wall of the movable frame, and a transverse block is installed on the movable end of the horizontal electric push rod. A vertical electric push rod is fixedly inserted into the end face of the transverse block, and the movable end of the vertical electric push rod is fixedly connected to the bottom of the side plate. Both the horizontal electric push rod and the vertical electric push rod are electrically connected to the microcontroller.

[0015] Preferably, the angle adjustment assembly includes a mounting shaft rotatably disposed on the side wall of the side plate, and the mounting shaft is detachably connected to the semi-circular support plate on the same side. An anti-slip disc is fixedly installed at the end of the mounting shaft away from the semi-circular support plate. A locking cover is sleeved on the outer side wall of the anti-slip disc, and the locking cover is threadedly connected to the side wall of the side plate. The inner side wall of the locking cover abuts against the side wall of the anti-slip disc.

[0016] Compared with existing technologies, the advantages of a belt conveyor idler changing device are:

[0017] 1. Through the cooperation of the set support frame, lifting plate, diagonal brace plate and lateral snap-fit ​​components, a lateral support structure is formed on both sides of the top of the lifting plate. With the set lifting unit, the belt of the trough conveyor can be fully supported. The force-bearing area is large, the belt will not fall off, improves the stability when changing idlers, and is safe and reliable. There is no need to loosen the conveyor belt tensioning device or disassemble the belt joint, which significantly shortens the maintenance time. Moreover, it can be operated by a single person, which greatly reduces the physical load and safety hazards of traditional pry bar operations.

[0018] 2. By setting up a pressure detection component, the lifting pressure can be detected in real time during the belt lifting process. When the pressure reaches the threshold, the lifting of the belt will be automatically stopped, which can effectively prevent the belt from being overstretched and can maximize the lifting of the belt, effectively increasing the operating space when changing the idler rollers. Secondly, the belt slack can be indirectly detected based on the lifting height of the belt, and personnel can be alerted when the slack is abnormal, thus achieving the early warning effect of belt damage.

[0019] 3. The idler support unit can support and support the idler when replacing it, reducing the difficulty of operation for personnel. The lateral pulling method can also prevent the idler mounting frame from obstructing the installation and removal of the idler, effectively improving the safety and convenience of idler replacement. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a belt conveyor idler roller replacement device provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the lateral snap-fit ​​assembly of a belt conveyor idler roller changing device provided by the present invention;

[0022] Figure 3This is a schematic diagram of the lifting unit of a belt conveyor idler roller replacement device provided by the present invention;

[0023] Figure 4 This is a schematic diagram of the pressure detection component of a belt conveyor idler roller replacement device provided by the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the lifting plate of a belt conveyor idler roller replacement device provided by the present invention;

[0025] Figure 6 This is a schematic diagram of the electric drive assembly of a belt conveyor idler roller changing device provided by the present invention;

[0026] Figure 7 This is a three-dimensional structural schematic diagram of the idler support unit of a belt conveyor idler replacement device provided by the present invention;

[0027] Figure 8 This is a structural schematic diagram of the position adjustment component and angle adjustment component of a belt conveyor idler roller replacement device provided by the present invention.

[0028] In the diagram: 1 Support frame, 2 Lifting plate, 3 Inclined brace, 4 Lateral snap-fit ​​assembly, 41 Side support plate, 42 Arc-shaped snap-fit ​​strip, 43 U-shaped groove, 44 Column, 5 Lifting unit, 51 Fixed platform, 52 Screw assembly, 53 Movable platform, 54 Fixed support plate, 55 Movable support plate, 56 Fixed lifting plate, 6 Pressure detection assembly, 61 Movable lifting plate, 62 Pressure sensor, 63 Rubber support pad, 64 Slide rod, 65 Slide hole, 66 T-shaped slider, 67 Groove, 7 Roller support unit, 71 Movable frame, 72 Side plate, 73 Semi-circular support plate, 74 Locking assembly, 8 Electric drive assembly, 81 Mounting cover, 82 Drive motor, 83 Bevel gear assembly, 84 Microcontroller, 85 Encoder, 9 Position adjustment assembly, 91 Horizontal electric push rod, 92 Horizontal movement block, 93 Vertical electric push rod, 10 Angle adjustment assembly, 101 Mounting shaft, 102 Anti-slip disc, 103 Locking cover. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] like Figures 1-8As shown, a belt conveyor idler replacement device includes a support frame 1, a lifting plate 2 above the support frame 1, and two inclined support plates 3. The two inclined support plates 3 are respectively hinged to the top two sides of the support frame 1 and are symmetrical. Each of the two inclined support plates 3 is equipped with a lateral snap-fit ​​assembly 4, which is used to support the inclined support plate 3. Each of the two lateral snap-fit ​​assemblies 4 includes a side support plate 41 hinged to the side wall of the inclined support plate 3. A plurality of arc-shaped snap-fit ​​strips 42 are fixedly connected to the lower end of the side wall of the side support plate 41 near the inclined support plate 3. A U-shaped groove 43 is opened at the end of the lifting plate 2, and a cylinder 44 is fixedly installed inside the U-shaped groove 43. The side support plate 41 is snapped to the cylinder 44 through the arc-shaped snap-fit ​​strips 42.

[0031] The lifting unit 5 is installed inside the support frame 1. The lifting unit 5 is used to lift the lifting plate 2 upward. The lifting unit 5 includes a fixed platform 51 fixedly installed inside the support frame 1. The side wall of the fixed platform 51 is rotatably connected to the side wall of the support frame 1 with a lead screw assembly 52. ​​Movable platforms 53 that slide horizontally inside the support frame 1 are respectively provided on both sides of the fixed platform 51. The lead screw assembly 52 is used to drive the two movable platforms 53 to move in opposite directions. An electric drive assembly 8 is installed at the end of the support frame 1 and is used to drive the lead screw assembly 52. ​​Fixed support plates 54 are hinged to both sides of the top of the fixed platform 51. Movable support plates 55 are hinged to the opposite side of the top of the two movable platforms 53. Two fixed lifting plates 56 are provided below the lifting plate 2. The two fixed support plates 54 and the movable support plates 55 are all hinged to the bottom of the fixed lifting plates 56 on the same side.

[0032] A pressure detection component 6 is installed on the top of the lifting unit 5, and the pressure detection component 6 is used to detect the pressure between the lifting unit 5 and the lifting plate 2. The pressure detection component 6 includes a movable lifting plate 61 set above the two lifting plates. Pressure sensors 62 and multiple rubber support pads 63 are fixedly installed between the two fixed lifting plates 56 and the movable lifting plate 61 on the same side. Multiple sliding rods 64 are installed at the bottom of the movable lifting plate 61, and multiple sliding holes 65 matching the sliding rods 64 are opened on the end face of the fixed lifting plate 56. Multiple T-shaped sliders 66 are installed on the top of the movable lifting plate 61, and a groove 67 is opened at the bottom of the lifting plate 2. Each T-shaped slider 66 is slidably connected to the top of the groove 67. (The pressure sensors 62 on both sides can ensure the accuracy of pressure detection through the redundant design of pressure detection. When the pressure detected by the pressure sensors 62 on both sides is different, the electrical signal that reaches the pressure threshold first shall be used.)

[0033] The electric drive assembly 8 includes a mounting cover 81 fixedly installed at the end of the support frame 1, and one end of the lead screw of the lead screw assembly 52 extends into the inner side of the mounting cover 81. A drive motor 82 is fixedly installed on the side wall of the mounting cover 81. A bevel gear assembly 83 is installed on the drive end of the drive motor 82, and the drive motor 82 drives the lead screw of the lead screw assembly 52 to rotate through the bevel gear assembly 83. A microcontroller 84 is installed on the side wall of the mounting cover 81, and the microcontroller 84 controls the operation of the drive motor 82 according to the electrical signals fed back by the two pressure sensors 62. An encoder 85 is installed on the drive end of the drive motor 82. The encoder 85 converts the number of rotations of the drive end of the drive motor 82 into an electrical signal and feeds it back to the microcontroller 84. The encoder 85 is based on the incremental photoelectric encoding principle. Through the light-transmitting and light-blocking grids on the code disk, the encoder 85 converts each rotation of the drive end of the drive motor 82 into a pulse signal and feeds the pulse signal back to the microcontroller 84.

[0034] The idler support unit 7 is located on one side of the support frame 1. The idler support unit 7 is used to support the idler. The idler support unit 7 includes a movable frame 71 that is slidably connected to the side wall of the support frame 1. The movable frame 71 is equipped with a position adjustment component 9. A side plate 72 is installed on the movable end of the position adjustment component 9. Two semi-circular support plates 73 are provided on one side of the side plate 72. One end of the two semi-circular support plates 73 is hinged, and the other end of the two semi-circular support plates 73 is jointly equipped with a locking component 74. The locking component 74 includes components such as bolts and nuts. The semi-circular support plates 73 are detachable, so as to be suitable for idler rollers of different diameters.

[0035] The position adjustment assembly 9 includes a horizontal electric push rod 91 fixedly inserted into the side wall of the movable frame 71, and a transverse block 92 is installed on the movable end of the horizontal electric push rod 91. A vertical electric push rod 93 is fixedly inserted into the end face of the transverse block 92, and the movable end of the vertical electric push rod 93 is fixedly connected to the bottom of the side plate 72. Both the horizontal electric push rod 91 and the vertical electric push rod 93 are electrically connected to the microcontroller 84. The horizontal electric push rod 91 and the vertical electric push rod 93 can adjust the position of the semi-circular support plate 73 so that it is fitted onto the outside of the idler roller.

[0036] An angle adjustment assembly 10 is installed on the side plate 72. The angle adjustment assembly 10 is used to adjust the angle of the two semi-circular support plates 73. The angle adjustment assembly 10 includes a mounting shaft 101 rotatably disposed on the side wall of the side plate 72. The mounting shaft 101 is detachably connected to the semi-circular support plate 73 on the same side. An anti-slip disc 102 is fixedly installed at the end of the mounting shaft 101 away from the semi-circular support plate 73. A locking cover 103 is sleeved on the outer side wall of the anti-slip disc 102. The locking cover 103 is threadedly connected to the side wall of the side plate 72. The inner side wall of the locking cover 103 abuts against the side wall of the anti-slip disc 102. The angle of the two semi-circular support plates 73 can be easily adjusted through the mounting shaft 101, thereby facilitating the replacement of the inclined idler roller of the trough belt conveyor.

[0037] The operating principle of this invention is explained as follows: The support frame 1 is fixed across the brackets on both sides of the belt conveyor and secured (by bolts, etc.), with the support frame 1 positioned on the side of the idler roller to be replaced. Then, the two inclined support plates 3 are rotated towards each other to fit against the inclined surfaces on both sides of the trough belt. Next, the side support plates 41 on the sidewalls of the two inclined support plates 3 are rotated open and secured to the outside of the cylinder 44 by the arc-shaped locking strip 42. The cylinder 44 and the arc-shaped locking strip 42 provide stable support for the inclined support plates 3. Then, the microcontroller 84 is activated, controlling the drive motor 82 to operate. The drive motor 82 drives the lead screw assembly 83 (which includes an active bevel gear mounted on the drive end of the drive motor 82 and a passive bevel gear mounted on the end of the lead screw assembly 52; rotation of the active bevel gear drives the passive bevel gear to rotate the lead screw of the lead screw assembly 52) to rotate. When the lead screw of the lever assembly 52 rotates, the lead screw nut drives the two movable platforms 53 to move synchronously toward the fixed platform 51. At this time, due to the hinge of the movable support plate 55 and the fixed support plate 54, the bottom of the movable support plate 55 moves toward the fixed platform 51, and the top of the movable support plate 55 and the fixed support plate 54 rotate upward, so that the T-shaped slider 66 of the movable lifting plate 61 slides in the groove 67 and the height of the movable lifting plate 61 rises, thereby pushing the lifting plate 2 to move upward. The lifting plate 2 will drive the inclined support plate 3 to move upward synchronously, thereby lifting the trough belt, providing temporary support for the belt, and separating it from the idler roller to be replaced, avoiding affecting the replacement of the idler roller. There is no need to loosen the conveyor belt tensioning device or disassemble the belt joint, which significantly shortens the maintenance time. Moreover, it can be operated by a single person, greatly reducing the physical load and safety hazards of traditional pry bar operations.

[0038] During the belt lifting process, the inclined support plate 3 and the lifting plate 2 temporarily support the belt. Therefore, the force of the belt will exert pressure on the inclined support plate 3 and the lifting plate 2. The lifting plate 2 applies pressure to the pressure sensor 62 through the movable lifting plate 61. When the pressure sensor 62 at the two fixed lifting plates 56 detects that the pressure has reached the threshold (this threshold is set based on parameters such as the material and size of the belt), the two pressure sensors 62 will send an electrical signal to the microcontroller 84. The microcontroller 84 will then immediately control the drive motor 82 to stop working to prevent the belt from being excessively lifted and stretched. This way, the belt can be lifted to the maximum extent while avoiding damage to the belt.

[0039] When the drive motor 82 starts, the microcontroller 84 synchronously activates the encoder 85. Based on the incremental photoelectric encoding principle, the encoder converts each rotation of the drive motor 82 into a pulse signal through the light-transmitting and opaque gratings on the code disk. The drive motor 82 drives the lifting plate 2 to rise through the drive screw assembly 52. ​​Therefore, the number of rotations recorded by the encoder 85 has a fixed proportional relationship with the belt lifting height. As the belt is subjected to the heavy pressure and friction of materials for a long time, the slack gradually increases. To achieve the idler roller disengagement state and the threshold pressure applied to the pressure sensor 62, the required lifting height of the belt will be higher, and the number of pulses fed back by the encoder 85 will also exceed the standard. The reference value range (under normal operating conditions of a new belt, the number of pulses recorded by the encoder 85 when the belt is raised to the height of the electrical signal fed back by the pressure sensor 62 is the standard reference value). After receiving the electrical signal fed back by the pressure sensor 62, the microcontroller 84 will calculate the number of electrical signals fed back by the encoder 85 and compare it with the standard reference value. When the difference between the two exceeds the preset threshold (generally, when the difference exceeds 10%, it means that the current operating condition of the belt is not good and needs to be adjusted in time), the microcontroller 84 will trigger a voice prompt to remind the staff that the belt is too loose and needs to be adjusted or replaced in time to prevent the belt abnormality from affecting the roller replacement operation and the normal operation of the equipment.

[0040] After receiving the electrical signal from the pressure sensor 62, the microcontroller 84 will issue a voice prompt to remind the operator that the idler roller can be disassembled and assembled. At this time, the operator can control the horizontal electric push rod 91 and the vertical electric push rod 93 through the microcontroller 84. The horizontal electric push rod 91 can adjust the horizontal position of the two semicircular support plates 73, while the vertical electric push rod 93 can adjust the vertical position of the two semicircular support plates 73. This allows the semicircular support plate 73 near the side plate 72 to first be fitted onto one side of the idler roller, and then the other semicircular support plate 73 to be rotated, so that the two semicircular support plates 73 close and fit over the outside of the idler roller. Then, the locking assembly 7... 4. Lock and fix the two semi-circular support plates 73. At this time, the bolts fixing the idler roller can be removed. Since the idler roller is fixed by the two semi-circular support plates 73, and the two semi-circular support plates 73 are supported by the side plate 72, the movable frame 71, the horizontal electric push rod 91, the vertical electric push rod 93 and other components, the idler roller will not fall off even if all the bolts of the idler roller are removed, and there is no need for personnel to lift the idler roller. After all the bolts of the idler roller are removed, the staff can control the horizontal electric push rod 91 to move back through the microcontroller 84, so that the idler roller can be pulled out from the inside of the mounting frame, so as to avoid the mounting frame affecting the removal of the idler roller. Then, loosen the locking component 74 and remove the idler roller from the two semi-circular support plates 73.

[0041] Since a set of idlers in a trough conveyor typically has three idlers, including one horizontal idler and two inclined idlers, before disassembling the inclined idlers, the angles of the two semi-circular plates 73 can be rotated by the mounting shaft 101 to match the angles of the inclined idlers. After the angle adjustment is completed, the locking cover 103 is turned, and the mounting shaft 101 can be locked and fixed by the pressure of the locking cover 103 on the anti-slip disc 102. Then the inclined idlers can be disassembled.

[0042] After removing the idler roller, the new idler roller is installed on the semi-circular support plate 73. By operating the horizontal electric push rod 91 and the vertical electric push rod 93, the new idler roller can be moved into the idler roller mounting frame, thus enabling the installation of the idler roller.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A belt conveyor idler replacement device, comprising a support frame (1), wherein a lifting plate (2) is disposed above the support frame (1), characterized in that, Also includes: Two diagonal bracing plates (3) are respectively hinged to the top two sides of the support frame (1), and the two diagonal bracing plates (3) are symmetrical. Both diagonal bracing plates (3) are equipped with lateral snap-fit ​​components (4), and the lateral snap-fit ​​components (4) are used to support the diagonal bracing plates (3). A lifting unit (5) is installed inside the support frame (1). The lifting unit (5) is used to lift the lifting plate (2) upward. A pressure detection component (6) is installed on the top of the lifting unit (5), and the pressure detection component (6) is used to detect the pressure between the lifting unit (5) and the lifting plate (2). A roller support unit (7) is disposed on one side of the support frame (1), and the roller support unit (7) is used to support the roller; The lifting unit (5) includes a fixed platform (51) fixedly installed inside the support frame (1). The side wall of the fixed platform (51) and the side wall of the support frame (1) are rotatably connected to a screw assembly (52). Movable platforms (53) that slide horizontally inside the support frame (1) are respectively provided on both sides of the fixed platform (51). The screw assembly (52) is used to drive the two movable platforms (53) to move in opposite directions. An electric drive assembly (8) is installed at the end of the support frame (1), and the electric drive assembly (8) is used to drive the screw assembly (52) to transmit power. Fixed support plates (54) are hinged to both sides of the top of the fixed platform (51). Movable support plates (55) are hinged to the opposite side of the top of the two movable platforms (53). Two fixed lifting plates (56) are provided below the lifting plate (2), and the two fixed support plates (54) and the movable support plates (55) are hinged to the bottom of the fixed lifting plate (56) on the same side. The pressure detection assembly (6) includes a movable lifting plate (61) disposed above two fixed lifting plates (56). Pressure sensors (62) and multiple rubber support pads (63) are fixedly installed between the two fixed lifting plates (56) and the movable lifting plate (61) on the same side. Multiple sliding rods (64) are installed at the bottom of the movable lifting plate (61), and multiple sliding holes (65) matching the sliding rods (64) are opened on the end face of the fixed lifting plate (56). Multiple T-shaped sliders (66) are installed at the top of the movable lifting plate (61), and a groove (67) is opened at the bottom of the lifting plate (2), and each T-shaped slider (66) is slidably connected to the top of the groove (67). The idler roller support unit (7) includes a movable frame (71) slidably connected to the side wall of the support frame (1). The movable frame (71) is equipped with a position adjustment component (9). A side plate (72) is installed on the movable end of the position adjustment component (9). Two semi-circular support plates (73) are provided on one side of the side plate (72). One end of the two semi-circular support plates (73) is hinged together, and the other end of the two semi-circular support plates (73) is jointly equipped with a locking component (74). An angle adjustment component (10) is installed on the side plate (72). The angle adjustment component (10) is used to adjust the angle of the two semi-circular support plates (73). The angle adjustment assembly (10) includes a mounting shaft (101) rotatably disposed on the side wall of the side plate (72), and the mounting shaft (101) is detachably connected to the semi-circular support plate (73) on the same side. An anti-slip disc (102) is fixedly installed at one end of the mounting shaft (101) away from the semi-circular support plate (73). A locking cover (103) is sleeved on the outer side wall of the anti-slip disc (102), and the locking cover (103) is threadedly connected to the side wall of the side plate (72). The inner side wall of the locking cover (103) abuts against the side wall of the anti-slip disc (102).

2. The belt conveyor idler replacement device according to claim 1, characterized in that, Both of the lateral snap-fit ​​assemblies (4) include a side support plate (41) hinged to the side wall of the diagonal support plate (3). The lower end of the side wall of the side support plate (41) near the diagonal support plate (3) is fixedly connected with a plurality of arc-shaped snap-fit ​​strips (42). The end of the lifting plate (2) is provided with a U-shaped groove (43), and a cylinder (44) is fixedly installed inside the U-shaped groove (43). The side support plate (41) is snapped to the cylinder (44) through the arc-shaped snap-fit ​​strips (42).

3. The belt conveyor idler replacement device according to claim 1, characterized in that, The electric drive assembly (8) includes a mounting cover (81) fixedly mounted on the end of the support frame (1), and one end of the lead screw of the lead screw assembly (52) extends to the inside of the mounting cover (81). A drive motor (82) is fixedly mounted on the side wall of the mounting cover (81). A bevel gear assembly (83) is mounted on the drive end of the drive motor (82), and the drive motor (82) drives the lead screw of the lead screw assembly (52) to rotate through the bevel gear assembly (83). A microcontroller (84) is mounted on the side wall of the mounting cover (81), and the microcontroller (84) controls the drive motor (82) to work according to the electrical signals fed back by two pressure sensors (62). An encoder (85) is mounted on the drive end of the drive motor (82), and the encoder (85) converts the number of rotations of the drive end of the drive motor (82) into an electrical signal and feeds it back to the microcontroller (84).

4. The belt conveyor idler replacement device according to claim 3, characterized in that, The position adjustment assembly (9) includes a horizontal electric push rod (91) fixedly inserted into the side wall of the movable frame (71), and a transverse block (92) is installed on the movable end of the horizontal electric push rod (91). A vertical electric push rod (93) is fixedly inserted into the end face of the transverse block (92), and the movable end of the vertical electric push rod (93) is fixedly connected to the bottom of the side plate (72). Both the horizontal electric push rod (91) and the vertical electric push rod (93) are electrically connected to the microcontroller (84).

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