Carrier roller replacing device of belt conveyor

Abstract

The invention belongs to the technical field of carrier roller replacing devices, and particularly relates to a belt conveyor carrier roller replacing device which comprises a jacking assembly and a transferring assembly. The jacking assembly comprises an upper top plate and a lower bottom plate, and a pair of X-shaped connecting rods is arranged between the upper top plate and the lower bottom plate; each X-shaped connecting rod corresponds to one driving cylinder; a pair of inclined supporting plates is hinged to the upper top plate. A shifting plate is fixedly connected to the inclined supporting plate, and a pushing pin matched with the shifting plate is arranged on the X-shaped connecting rod. The transfer assembly comprises a supporting bottom plate and a transfer sliding block, the transfer sliding block is in sliding connection with the supporting bottom plate, and a pull rod is fixedly connected to the transfer sliding block; and a second groove is formed in the transfer sliding block. According to the device, through the ingenious design of the jacking assembly and the adjustable connecting assembly, jacking or lifting of the upper-layer belt and the lower-layer belt is achieved, the device can be suitable for replacement scenes of multiple carrier rollers such as a middle carrier roller, an inclined carrier roller and a lower carrier roller, and universality is high.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of roller replacement device, and particularly relates to a belt conveyor roller replacement device. BACKGROUND

[0002] The belt conveyor is a crucial material conveying equipment in industrial production, and its stable operation depends on the effective support of the rollers. The rollers, especially the intermediate rollers and the inclined rollers in the upper roller mechanism that bear the material, bear heavy load and wear for a long time and need to be replaced regularly. At present, the replacement of the rollers mainly relies on manual operation, which has many difficulties and risks. For the inclined rollers located on both sides of the conveying belt, workers can still disassemble them outside the conveyor, but the operation space is still limited, laborious and low in efficiency. For the intermediate rollers located directly below the conveying belt, the replacement process is particularly complex and dangerous: workers must enter the narrow inside of the conveyor frame to disassemble and install them in the limited space.

[0003] Due to the large weight of the rollers and the great disassembly resistance caused by accumulated material and rust, manual carrying and disassembly are extremely difficult, which not only has high labor intensity, consumes time and effort, but also has the safety hazard of the rollers falling and injuring or pinching the workers. In addition, for the lower rollers located in the lower layer for supporting the return belt, their replacement also needs workers to manually lift the belt, which is inconvenient to operate. Therefore, the prior art lacks a special device that can safely, efficiently and labor-savingly complete the replacement of various rollers, especially the intermediate rollers, which has become a prominent pain point restricting the maintenance efficiency and safety of the belt conveyor. SUMMARY

[0004] In view of the above technical problems, the present application provides a belt conveyor roller replacement device, which aims to overcome the technical problems of limited operation space, high labor intensity, low efficiency and high safety hazard in the manual replacement of the rollers of the belt conveyor, especially the intermediate rollers in the prior art.

[0005] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: A belt conveyor roller replacement device, comprising a jacking assembly and a transfer assembly; The jacking assembly comprises an upper top plate and a lower bottom plate, and a pair of X-shaped connecting rods is arranged between the upper top plate and the lower bottom plate; each X-shaped connecting rod corresponds to a driving cylinder, the cylinder body of the driving cylinder is fixedly connected with the lower bottom plate, and the piston rod of the driving cylinder is fixedly connected with a pushing plate; when the piston rod of the driving cylinder is elongated, the X-shaped connecting rod is pushed to move by the pushing plate, so that the upper top plate moves upward; A pair of inclined support plates are hinged to the upper top plate; a push plate is fixedly connected to the inclined support plates; a pushing pin is arranged on the X-shaped connecting rod and cooperates with the push plate; when the upper top plate moves upward, the pushing pin pushes the push plate and the inclined support plates to rotate; a support plate is slidably connected to the upper top plate; one end of the support plate is fixedly connected to an operating rod, and the other end of the support plate is fixedly connected to a support plate; a first recess is arranged on the support plate. The transfer assembly comprises a support base plate and a transfer sliding block; the transfer sliding block is slidably connected to the support base plate; a pull rod is fixedly connected to the transfer sliding block; a second recess is arranged on the transfer sliding block.

[0006] A limiting assembly is arranged on the upper top plate; the limiting assembly comprises a bidirectional screw rod and a pair of limiting sliding blocks; the bidirectional screw rod is rotatably connected to the upper top plate; the limiting sliding blocks are threadedly connected to the bidirectional screw rod and slidably connected to the upper top plate; the pair of limiting sliding blocks are located between the pair of inclined support plates; the pair of limiting sliding blocks are driven to move towards or away from each other by rotating the bidirectional screw rod.

[0007] Both ends of the lower base plate are provided with a connecting assembly; the connecting assembly comprises a support column and an adjusting rod; the adjusting rod is threadedly connected to the support column; a fixed cross rod is inserted into the adjusting rod; the adjusting rod is provided with a corresponding insertion hole.

[0008] The connecting assembly further comprises a pushing inclined block and a linkage rod; the support column is slidably connected to the lower base plate; a limiting protrusion is arranged on the support column; the pushing inclined block is slidably connected to the support column; the support column is provided with a first inclined surface matched with the pushing inclined block; when the pushing inclined block moves, the support column is driven to move by the cooperation between the pushing inclined block and the second inclined surface. The linkage rod is slidably connected to the lower base plate; one end of the linkage rod is fixedly connected to the pushing inclined block; the other end of the linkage rod is provided with a baffle; when the piston rod of the driving cylinder is retracted, the baffle, the linkage rod and the pushing inclined block are moved by the pushing plate.

[0009] A support shaft is further included; the support shaft is inserted into the fixed cross rod in the connecting assembly.

[0010] The driving cylinder adopts a multi-stage telescopic cylinder.

[0011] An L-shaped plate is slidably connected to the transfer sliding block; a pull spring is arranged between the L-shaped plate and the transfer sliding block.

[0012] A second inclined surface is arranged at the lower end of the L-shaped plate; a guide column matched with the second inclined surface is arranged on the support base plate.

[0013] Limiting clamping plates are arranged at both ends of the support base plate.

[0014] Compared with the prior art, the present application has the beneficial effects that: The device realizes the jacking or lifting of the upper and lower belts through the jacking assembly and the adjustable connecting assembly, and can be suitable for the replacement of various rollers such as middle rollers, inclined rollers and lower rollers.

[0015] The driving cylinder (such as a hydraulic cylinder or a pneumatic cylinder) is used as a power source, the stroke is amplified through the shear type connecting rod (X-shaped connecting rod) mechanism, the heavy conveying belt can be easily jacked up, and the labor intensity of workers is greatly reduced. Meanwhile, the jacking action is linked with the unfolding action of the inclined support plate, the automation degree is high, and the operation is simple.

[0016] The support plate and the support plate can be pre-stretched below the middle roller before jacking, and stably jacked up with the jacking action. In combination with the transfer assembly, the old roller is smoothly moved out and the new roller is fed in.

[0017] The independent mechanical limiting assembly (two-way screw and limiting block) is arranged, which can effectively prevent the upper jacking plate from falling back when the driving cylinder fails, and provides important secondary safety protection for the operator.

[0018] The connecting assembly forms reliable clamping with the rack through the adjustable fixed cross bar, so that the device is prevented from shifting during jacking. The L-shaped plate in the transfer assembly cooperates with the guide column, so that the roller can be automatically pressed or released, and the stability of the roller during transfer is ensured, and the operation steps are further simplified. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of one direction of the jacking assembly of the present application; Figure 2 is a structural schematic view of another direction of the jacking assembly of the present application; Figure 3 is a structural schematic view of the transfer assembly of the present application; Figure 4 is a structural schematic view of the jacking assembly and the transfer assembly placed on the rack of the present application; Figure 5 is a structural schematic view of the upper belt after being jacked up; Figure 6 is a sectional view of the jacking assembly and the lower belt in the connected state; Figure 7 is Figure 6 is a local enlarged view of B in FIG. 8; Figure 8 is Figure 6 is a structural schematic view of another direction of the structure shown in FIG. 9; Figure 9 is Figure 6 is a longitudinal sectional view of the structure shown in FIG. 10; Figure 10 is Figure 9 is a local enlarged view of C in FIG. 11; Wherein: 1 is the lifting assembly, 10 is the upper top plate, 11 is the lower bottom plate, 12 is the X-shaped connecting rod, 13 is the drive cylinder, 14 is the push plate, 15 is the diagonal brace plate, 16 is the lever plate, 17 is the push pin, 18 is the support plate, 19 is the operating lever, 110 is the support bracket, 111 is the first groove, 112 is the bidirectional lead screw, 113 is the limit slider, 114 is the support column, 115 is the adjusting rod, 116 is the fixed crossbar, 117 is the push inclined block, 118 is the... 119 is the linkage rod, 120 is the first inclined surface, 121 is the baffle, 122 is the support shaft, 2 is the transfer assembly, 20 is the support base plate, 21 is the transfer slider, 22 is the pull rod, 23 is the second groove, 24 is the L-shaped plate, 25 is the tension spring, 26 is the second inclined surface, 27 is the guide post, 28 is the limit plate, 3 is the frame, 4 is the upper belt, 5 is the lower belt, 6 is the upper roller mechanism, 61 is the middle roller, and 7 is the lower roller mechanism. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] like Figures 1 to 3 As shown, a belt conveyor idler replacement device includes a lifting assembly 1 and a transfer assembly 2; the lifting assembly 1 is used to lift the belt, and the transfer assembly 2 is used to transfer the old and new idlers (specifically the intermediate idler 61).

[0022] The lifting assembly 1 includes an upper top plate 10 and a lower bottom plate 11. A pair of X-shaped connecting rods 12 are provided between the upper top plate 10 and the lower bottom plate 11, and the pair of X-shaped connecting rods 12 are arranged opposite to each other. The X-shaped connecting rods 12 are common scissor connecting rods, which are composed of two connecting rods 119 that are hinged in the middle. One end of the two connecting rods 119 is respectively hinged to the upper top plate 10 and the lower bottom plate 11, and the other end of the two connecting rods 119 is respectively slidably connected to the upper top plate 10 and the lower bottom plate 11. The upper top plate 10 and the lower bottom plate 11 are provided with corresponding sliding grooves, and the other end of the two connecting rods 119 is provided with corresponding pins, which are located in the sliding grooves.

[0023] Each X-shaped connecting rod 12 corresponds to a drive cylinder 13. The cylinder body of the drive cylinder 13 is fixedly connected to the lower base plate 11, and the piston rod of the drive cylinder 13 is fixedly connected to a push plate 14. When the piston rod of the drive cylinder 13 extends, it pushes the X-shaped connecting rod 12 to move through the push plate 14, causing the upper top plate 10 to move upward.

[0024] A pair of inclined support plates 15 are hingedly connected to the upper top plate 10; a push plate 16 is fixedly connected to the inclined support plates 15; the X-shaped connecting rod 12 is provided with a push pin 17 matched with the push plate 16; when the upper top plate 10 moves upward, the push pin 17 drives the push plate 16 and the inclined support plates 15 to rotate. That is, only by driving the cylinder 13, the movement of the upper top plate 10 and the rotation and unfolding of the inclined support plates 15 can be driven. Specifically, the push pin 17 is coaxially and integrally fixedly connected with the pin shaft.

[0025] As shown in Figure 4 and 5 , the belt conveyor comprises a frame 3, an upper roller mechanism 6 and a lower roller mechanism 7. The upper roller mechanism 6 mainly comprises inclined rollers arranged on both sides and a middle roller 61 arranged horizontally in the middle. When replacing the inclined rollers, workers can replace them on both sides of the belt conveyor. When replacing the middle roller 61, workers need to enter the inside of the belt conveyor to replace it. The lower roller mechanism 7 mainly comprises a horizontally arranged roller.

[0026] The specific steps for replacing the inclined rollers are as follows: first, place the lower bottom plate 11 of the jacking assembly 1 on the frame 3 of the belt conveyor; then, extend the driving cylinder 13 to move the upper top plate 10 upward and drive the inclined support plates 15 to rotate and unfold; as the piston rod of the driving cylinder 13 gradually extends, the upper belt 4 can be gradually jacked up; finally, workers can disassemble and replace the inclined rollers.

[0027] The upper top plate 10 is slidably connected with a support plate 18, one end of the support plate 18 is fixedly connected with an operating rod 19, and the other end of the support plate 18 is fixedly connected with a support plate 110, the support plate 110 is provided with a first recess 111 for accommodating the middle roller 61.

[0028] When the middle roller 61 needs to be replaced, after placing the lower bottom plate 11 of the jacking assembly 1 on the frame 3 of the belt conveyor, first move the support plate 18 by pushing it with the operating rod 19, so that the support plate 110 is located below the middle roller 61. Then, operate according to the above steps (specific steps for replacing inclined rollers). Since the support plate 110 is located below the middle roller 61, the movement of the upper top plate 10 will drive the support plate 110 to move upward together, jacking up the middle roller 61 to be replaced. Therefore, workers can directly take out the jacked-up middle roller 61, achieving the purpose of saving time and effort. At the same time, it can also avoid the problem that workers have difficulty replacing the middle roller 61 due to limited internal operating space and large disassembly resistance.

[0029] The transfer assembly 2 comprises a support bottom plate 20 and a transfer sliding block 21, the transfer sliding block 21 is slidably connected with the support bottom plate 20, and a pull rod 22 is fixedly connected to the transfer sliding block 21; the transfer sliding block 21 is provided with a second recess 23 for accommodating the middle roller 61.

[0030] When the intermediate roller 61 is replaced, the support base plate 20 is placed on the rack 3 of the belt conveyor. After the jacked intermediate roller 61 is taken out and placed on the second groove 23 of the transfer slider 21, another worker pulls the pull rod 22 to move the transfer slider 21, and the disassembled intermediate roller 61 is pulled out. After being pulled out, another worker takes off the disassembled intermediate roller 61 and places a new intermediate roller 61 on the second groove 23 of the transfer slider 21; then another worker pushes the pull rod 22 to move the transfer slider 21 in the opposite direction and sends it into the inside of the belt conveyor; finally, the support plate 18 is pushed to move in the opposite direction and reset, and the worker installs the new intermediate roller 61 on the roller holder.

[0031] Through the above structure, the transfer of the new and old intermediate rollers 61 can be conveniently realized.

[0032] Further, as shown in Figure 1 In order to prevent the driving cylinder 13 from failing and causing the upper top plate 10 to lose support and suddenly move downward, a limiting assembly is arranged on the upper top plate 10. The limiting assembly includes a bidirectional screw 112 and a pair of limiting sliders 113. The bidirectional screw 112 is rotationally connected with the upper top plate 10, and the limiting sliders 113 are threadedly connected with the bidirectional screw 112 and slidably connected with the upper top plate 10. The pair of limiting sliders 113 are located between the pair of inclined support plates 15. The pair of limiting sliders 113 are driven to move relatively or in opposite directions by rotating the bidirectional screw 112.

[0033] After the upper top plate 10 moves upward and the inclined support plates 15 rotate and unfold, the pair of limiting sliders 113 are driven to move in opposite directions by rotating the bidirectional screw 112, so that the limiting sliders 113 have a small gap with the corresponding push pins 17. When the driving cylinder 13 fails, the limiting sliders 113 block the push pins 17, preventing the upper top plate 10 from moving downward.

[0034] After the replacement is completed, the bidirectional screw 112 is first rotated in the opposite direction to drive the pair of limiting sliders 113 to move relatively; then the piston rod of the driving cylinder 13 is controlled to retract. Under the action of gravity, the upper top plate 10 moves downward, and the inclined support plates 15 rotate in the opposite direction and fold.

[0035] Further, as shown in Figure 4 A connecting assembly is arranged at both ends of the lower bottom plate 11. The connecting assembly includes a support column 114 and an adjusting rod 115. The adjusting rod 115 is threadedly connected with the support column 114, and the position of the adjusting rod 115 can be finely adjusted by rotating the adjusting rod 115. A fixed cross bar 116 is inserted into the adjusting rod 115, and the adjusting rod 115 is provided with a corresponding insertion hole.

[0036] After the lower base plate 11 of the jacking assembly 1 is placed on the frame 3 of the belt conveyor, the height is adjusted by rotating the adjusting rod 115, so that the plug-in hole thereon is below the frame 3, and the fixing cross bar 116 is inserted into the plug-in hole. The fixing cross bar 116 and the lower base plate 11 cooperate to form a C-shaped clamping structure, which clamps the frame 3 and limits the movement of the lower base plate 11.

[0037] Further, as shown in Figures 6 to 10 , the connecting assembly further comprises a pushing inclined block 117 and a linkage rod 118. The supporting column 114 is slidably connected with the lower base plate 11, and the supporting column 114 is provided with a limiting protrusion. When the limiting protrusion contacts the lower base plate 11, the supporting column 114 cannot continue to move downward, thereby limiting the movement.

[0038] The linkage rod 118 is slidably connected with the lower base plate 11, one end of the linkage rod 118 is fixedly connected with the pushing inclined block 117, and the other end of the linkage rod 118 is provided with a baffle 121. The pushing inclined block 117 is slidably connected with the supporting column 114, and the supporting column 114 is provided with a corresponding through hole and a first inclined surface 120 matched with the pushing inclined block 117.

[0039] The supporting column 114 and the fixing cross bar 116 do not need to be jacked up when the rollers in the lower roller mechanism 7 are replaced; therefore, the piston rod of the control driving cylinder 13 is retracted, and the pushing plate 14 pushes the baffle 121, the linkage rod 118 and the pushing inclined block 117 to move. When the pushing inclined block 117 moves, the supporting column 114 moves upward through the cooperation of the pushing inclined block 117 and the first inclined surface 120, and the fixing cross bar 116 on the supporting column 114 also moves upward.

[0040] Specifically, at least two plug-in holes are arranged on the adjusting rod 115, and when the rollers in the lower roller mechanism 7 need to be replaced, the fixing cross bar 116 is inserted into the lowermost plug-in hole.

[0041] The replacement process of the rollers in the lower roller mechanism 7 is as follows: the lower base plate 11 of the jacking assembly 1 is also placed on the frame 3 of the belt conveyor; then the fixing cross bar 116 is inserted into the lowermost plug-in hole, and the fixing cross bar 116 is below the lower belt 5; finally, the piston rod of the control driving cylinder 13 is retracted, so that the fixing cross bar 116 moves upward and lifts the lower belt 5, so that the lower belt 5 no longer presses the rollers in the lower roller mechanism 7, thereby providing sufficient operation space for replacing the rollers.

[0042] Further, as shown in Figure 8 , in order to increase the contact area with the lower belt 5, a supporting shaft 122 is further arranged, and the supporting shaft 122 is plugged with the fixing cross bar 116 in the connecting assembly. Before the fixing cross bar 116 is installed, the supporting shaft 122 is placed below the lower belt 5, and then the fixing cross bar 116 is installed. In this way, when the piston rod of the driving cylinder 13 is retracted, the lower belt 5 is lifted through the supporting shaft 122.

[0043] Furthermore, the drive cylinder 13 adopts a multi-stage telescopic cylinder.

[0044] Furthermore, such as Figure 3 As shown, an L-shaped plate 24 is slidably connected to the transfer slider 21, and a tension spring 25 is provided between the L-shaped plate 24 and the transfer slider 21. The L-shaped plate 24 can press the intermediate roller 61 to prevent the intermediate roller 61 from moving arbitrarily during the movement of the transfer slider 21. When it is necessary to remove the intermediate roller 61 from the transfer slider 21, the L-shaped plate 24 can be pulled upward to increase the distance between the L-shaped plate 24 and the transfer slider 21, thereby removing the intermediate roller 61.

[0045] The above operation requires workers to pull the L-shaped plate 24, which is somewhat inconvenient. Therefore, a second inclined surface 26 is provided at the lower end of the L-shaped plate 24; a guide post 27 that cooperates with the second inclined surface 26 is provided on the supporting base plate 20, and the guide post 27 is specifically located in the middle of the supporting base plate 20.

[0046] When the transfer slider 21 moves to the middle of the support base plate 20, the L-shaped plate 24 is lifted by the cooperation of the second inclined surface 26 and the guide post 27, thus eliminating the need for manual operation. When the transfer slider 21 moves outward, the second inclined surface 26 gradually moves away from the guide post 27, and under the action of the tension spring 25, it drives the L-shaped plate 24 to move down and press against the intermediate roller 61.

[0047] Limiting plates 28 are provided at both ends of the support base plate 20 to prevent the support base plate 20 from moving at will, so that the support base plate 20 can be locked onto the frame 3.

[0048] The above description only illustrates preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A belt conveyor idler roller changing device, characterized in that: Includes a lifting component (1) and a transfer component (2); The lifting assembly (1) includes an upper top plate (10) and a lower bottom plate (11). A pair of X-shaped connecting rods (12) are provided between the upper top plate (10) and the lower bottom plate (11). Each X-shaped connecting rod (12) corresponds to a driving cylinder (13). The cylinder body of the driving cylinder (13) is fixedly connected to the lower bottom plate (11), and the piston rod of the driving cylinder (13) is fixedly connected to a push plate (14). When the piston rod of the driving cylinder (13) extends, the X-shaped connecting rod (12) is pushed to move through the push plate (14), causing the upper top plate (10) to move upward. A pair of inclined bracing plates (15) are hinged to the upper top plate (10); a lever plate (16) is fixedly connected to the inclined bracing plate (15), and a push pin (17) that cooperates with the lever plate (16) is provided on the X-shaped connecting rod (12); when the upper top plate (10) moves upward, the push pin (17) pushes the lever plate (16) and the inclined bracing plate (15) to rotate; a support plate (18) is slidably connected to the upper top plate (10), an operating rod (19) is fixedly connected to one end of the support plate (18), and a support bracket (110) is fixedly connected to the other end of the support plate (18), and a first groove (111) is provided on the support bracket (110). The transfer assembly (2) includes a support base plate (20) and a transfer slider (21). The transfer slider (21) is slidably connected to the support base plate (20), and a pull rod (22) is fixedly connected to the transfer slider (21). A second groove (23) is provided on the transfer slider (21).

2. The belt conveyor idler roller replacement device according to claim 1, characterized in that: The upper top plate (10) is provided with a limiting component, which includes a bidirectional lead screw (112) and a pair of limiting sliders (113). The bidirectional lead screw (112) is rotatably connected to the upper top plate (10), and the limiting sliders (113) are threadedly connected to the bidirectional lead screw (112) and slidably connected to the upper top plate (10). The pair of limiting sliders (113) are located between a pair of inclined support plates (15). The pair of limiting sliders (113) are driven to move relative to each other or in opposite directions by rotating the bidirectional lead screw (112).

3. The belt conveyor idler replacement device according to claim 1, characterized in that: Both ends of the lower base plate (11) are provided with connecting components; the connecting components include a support column (114) and an adjusting rod (115); the adjusting rod (115) is threadedly connected to the support column (114), a fixed crossbar (116) is inserted into the adjusting rod (115), and a corresponding insertion hole is provided on the adjusting rod (115).

4. The belt conveyor idler replacement device according to claim 3, characterized in that: The connecting assembly also includes a pusher block (117) and a linkage rod (118). The support column (114) is slidably connected to the lower base plate (11), and the support column (114) is provided with a limiting protrusion. The pusher block (117) is slidably connected to the support column (114), and the support column (114) is provided with a first inclined surface (120) that cooperates with the pusher block (117). When the pusher block (117) moves, the support column (114) is driven to move by the cooperation of the pusher block (117) and the second inclined surface (26). The linkage rod (118) is slidably connected to the lower base plate (11), one end of the linkage rod (118) is fixedly connected to the push block (117), and the other end of the linkage rod (118) is provided with a baffle (121); when the piston rod of the drive cylinder (13) retracts, the baffle (121), linkage rod (118) and push block (117) are moved by the push plate (14).

5. A belt conveyor idler replacement device according to claim 4, characterized in that: It also includes a support shaft (122), which is inserted into a fixed crossbar (116) in the connecting assembly.

6. The belt conveyor idler roller replacement device according to claim 1, characterized in that: The drive cylinder (13) is a multi-stage telescopic cylinder.

7. The belt conveyor idler replacement device according to claim 1, characterized in that: An L-shaped plate (24) is slidably connected to the transfer slider (21), and a tension spring (25) is provided between the L-shaped plate (24) and the transfer slider (21).

8. A belt conveyor idler roller replacement device according to claim 7, characterized in that: The lower end of the L-shaped plate (24) is provided with a second inclined surface (26); the supporting base plate (20) is provided with a guide post (27) that cooperates with the second inclined surface (26).

9. A belt conveyor idler roller replacement device according to claim 1, characterized in that: The support base plate (20) is provided with limiting plates (28) at both ends.

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