Unattended walking mechanism of belt conveyor

Abstract

The utility model discloses an unattended walking mechanism of a belt conveyor, which comprises an I-shaped guide rail, a plurality of anti-collision photoelectric switches fixed at the top of the left side of the I-shaped guide rail and a limit switch fixed at the front side of the bottom of the I-shaped guide rail, and a walking mechanism body is mounted on the I-shaped guide rail. By arranging a series of structures, the device can stably walk on the I-shaped guide rail in an anti-swinging mode, extrusion force can be conveniently monitored in real time, the driven wheel and the I-shaped guide rail are automatically controlled to be tightened in a pressure-controlled mode when the extrusion force is lower than a preset value, and the effect that the driven wheel and the bottom of the I-shaped guide rail are intelligently and automatically kept to be tightly extruded in a pressure-controlled mode all the time is achieved; the phenomenon that walking displacement cannot be rotationally ground due to the fact that anti-skid rubber on the driven wheel is separated from the I-shaped guide rail due to friction and other factors is avoided, the long-acting use stability is improved, in addition, the driving wheel, the synchronous belt and other structures are arranged in the moving box in a hidden mode, the risk that the driving wheel, the synchronous belt and other structures are accidentally touched, blocked and stained is effectively reduced, and the use safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal powder conveying technology, specifically to an unattended walking mechanism for belt conveyors. Background Technology

[0002] To vigorously promote the informatization, digitalization, and intelligentization of material conveying processes, efforts should be made in areas such as the informatization of belt conveyor systems, the digitalization of inspection processes, the intelligentization of fault early warning, and the identification, judgment, and comparison-based management. Currently, the metallurgical industry and metal powder material conveying enterprises are increasingly leveraging digital technology to drive material conveying, and utilizing digital online technology to promote information transmission, identification, and intelligent control during the material conveying process. This is especially true for scenarios where manual inspection is impossible, emergency repairs are very difficult, and fault repair is highly demanding, requiring advanced prevention and control measures. Digital online technology is used to monitor, identify, judge, and eliminate potential hazards in real time, enabling automatic patrol, unattended operation, real-time monitoring, and data collection.

[0003] In response, CN220578236U discloses an unattended walking mechanism for a belt conveyor, including a wheel system, a motor system, anti-collision photoelectric switches, and limit switches. Multiple sets of anti-collision photoelectric switches are fixedly installed on the top of the guide rail by mounting brackets. Slide grooves are opened in the middle of both sides of the guide rail along its length. A pair of limit switches are fixedly installed in the slide grooves, with a certain distance between the limit switches. A pair of brakes are fixedly installed below the guide rail, close to the limit switches. The wheel system improves walking stability and prevents longitudinal bumps. The motor system forms a driving force brake on the drive wheel, providing a power-off braking function for smooth parking. The anti-collision photoelectric switches automatically cut off the power supply to the running mechanism to avoid collisions with pedestrians or obstacles. The limit switches prevent the walking mechanism from derailing.

[0004] The aforementioned technology discloses an unattended walking mechanism for a belt conveyor. This mechanism uses a wheel system and motor system in conjunction with an external control system to drive the driven wheel to rotate. The driven wheel moves automatically on a guide rail by rotating and grinding. Limit switches and multiple sets of anti-collision photoelectric switches prevent detachment upon reaching the designated position and automatically cut off the power to the operating mechanism via photoelectric sensing to avoid collisions with pedestrians or obstacles. However, the following shortcomings still exist in its use: 1. While the driven wheel moves by engaging with the bottom of the rail via a wheel system, wear inevitably occurs on the outer side of the driven wheel over time, preventing it from maintaining a tight grip with the bottom of the rail for proper rotation and driving. This results in inconsistent stability over long-term use. 2. The exposed drive wheel and belt, among other transmission structures, pose a significant risk of accidental contact, jamming, and contamination, compromising safety. Therefore, this application proposes an unattended walking mechanism for a belt conveyor to address these problems. Utility Model Content

[0005] The purpose of this utility model is to provide an unattended walking mechanism for belt conveyors to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an unattended walking mechanism for a belt conveyor, comprising an I-shaped guide rail, multiple anti-collision photoelectric switches fixed to its top left side, and limit switches fixed to its front bottom side. The walking mechanism body is mounted on the I-shaped guide rail, and the walking mechanism body includes:

[0007] The U-shaped seat has two guide wheels rotatably mounted on its inner walls on both sides, which are in rolling contact with the bottom inner wall of the I-shaped guide rail. Two positioning wheels are rotatably mounted on its inner walls on both sides, and the bottom of the I-shaped guide rail is in rolling contact with the corresponding two positioning wheels on both sides.

[0008] The movable box is fitted onto the bottom outer side of the U-shaped base;

[0009] The pressure-controlled lifting vertical guide assembly is installed inside the mobile box;

[0010] The walking drive assembly is installed on the pressure-controlled lifting vertical guide assembly and is pressed tightly against the bottom of the I-shaped guide rail. The pressure-controlled lifting vertical guide assembly is used to monitor the clamping force between the walking drive assembly and the bottom of the I-shaped guide rail in real time and drive it to always be pressed tightly against the bottom of the I-shaped guide rail.

[0011] Preferably, the movable box is fixedly fitted to the outer bottom of the U-shaped base by welding.

[0012] Preferably, the movable box is detachably fitted onto the outer bottom of the U-shaped base.

[0013] Preferably, the bottom of both sides of the U-shaped seat is provided with three threaded grooves, and a fixing bolt is screwed into the threaded groove. The top of both sides of the movable box is provided with three bolt holes, and the bolt holes are movably fitted onto the corresponding fixing bolts.

[0014] Preferably, the pressure-controlled lifting vertical guide assembly includes an electric telescopic rod fixedly connected to the inner wall of the bottom of the mobile box. A U-shaped plate is provided above the electric telescopic rod. Two L-shaped guide rods are fixedly connected between the inner walls of both sides of the mobile box and its bottom inner wall. An outer edge is integrally provided on the bottom of both sides of the U-shaped plate. The outer edge is slidably sleeved on the corresponding two L-shaped guide rods. A pressure sensor is fixedly connected between the extended end of the electric telescopic rod and the bottom of the U-shaped plate. A PLC controller is fixedly installed on the bottom right side of the mobile box. The pressure sensor and the electric telescopic rod are both electrically connected to the PLC controller.

[0015] Preferably, the walking drive assembly includes a servo brake motor and a reducer fixedly installed on the inner wall of the right side of the U-shaped plate. The input shaft of the reducer and the output shaft of the servo brake motor both extend to the outside of the U-shaped plate and are fixedly connected to drive wheels. The two drive wheels are connected to the same synchronous belt. A driven wheel fixedly connected to the output shaft of the reducer is rotatably installed on the inner wall of the left side of the U-shaped plate. The outer side of the driven wheel is covered with anti-slip rubber that is pressed tightly against the bottom of the I-shaped guide rail.

[0016] Preferably, a rectangular through hole is provided on the bottom inner wall of the U-shaped seat, and the U-shaped plate and the driven wheel are located in the rectangular through hole and do not contact its inner wall. Multiple ventilation holes are provided on the rear inner wall of the movable box.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. Through the combination of the I-shaped guide rail, positioning wheel, guide wheel, U-shaped seat, moving box and walking drive component, it can move steadily on the I-shaped guide rail without swaying. It can monitor the extrusion pressure in real time and automatically control the driven wheel and the I-shaped guide rail to tighten when the extrusion pressure is lower than the preset value. It can always intelligently and automatically maintain the effect of controlling the pressure and squeezing the bottom of the driven wheel and the I-shaped guide rail, avoiding the phenomenon that the anti-slip rubber on the driven wheel will separate from the I-shaped guide rail due to friction and other factors, which would prevent the grinding and movement displacement. This improves the stability of long-term use.

[0019] 2. By concealing the drive wheels, timing belts, and other walking drive structures inside the mobile box, the risk of accidental jamming or contamination is effectively reduced, thus improving safety during use.

[0020] 3. The U-shaped base, movable box, bolt holes, fixing bolts and threaded grooves allow personnel to disassemble the movable box to remove the obstruction on its top, facilitating subsequent inspection and maintenance of its interior.

[0021] This utility model, through a series of structures, enables stable and anti-sway movement on the I-shaped guide rail. It facilitates real-time monitoring of the extrusion pressure and automatically controls the driven wheel to maintain tight pressure on the I-shaped guide rail when the extrusion pressure is lower than the preset value. This achieves the effect of always intelligently and automatically maintaining tight pressure between the driven wheel and the bottom of the I-shaped guide rail, avoiding the phenomenon that the anti-slip rubber on the driven wheel may separate from the I-shaped guide rail due to friction or other factors, thus preventing the wheel from rotating and moving. This improves the stability of long-term use. In addition, the drive wheel, timing belt, and other structures are all hidden inside the moving box, effectively reducing the risk of accidental contact, jamming, and contamination, and improving the safety of use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an unattended walking mechanism for a belt conveyor according to Embodiment 1 of this utility model;

[0023] Figure 2 This is a front sectional view of the unattended walking mechanism of a belt conveyor according to Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of an unattended walking mechanism for a belt conveyor according to Embodiment 2 of this utility model;

[0025] Figure 4 This is a front sectional view of a belt conveyor unattended walking mechanism according to Embodiment 2 of this utility model.

[0026] In the diagram: 100, I-shaped guide rail; 101, anti-collision photoelectric switch; 102, limit switch; 1, U-shaped base; 11, guide wheel; 12, positioning wheel; 13, rectangular through hole; 2, moving box; 21, fixing bolt; 22, vent hole; 3, L-shaped guide rod; 31, U-shaped plate; 4, electric telescopic rod; 41, pressure sensor; 42, PLC controller; 5, servo brake motor; 51, reducer; 52, drive wheel; 53, driven wheel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figures 1 to 2 As shown, the unattended walking mechanism for a belt conveyor proposed in this embodiment includes an I-shaped guide rail 100, a plurality of anti-collision photoelectric switches 101 fixed on its top left side, and a limit switch 102 fixed on its bottom front side. The walking mechanism body is mounted on the I-shaped guide rail 100.

[0030] The anti-collision photoelectric switch 101, combined with the equipment control system, generates an electrical signal through a phototube. After waveform shaping and amplification, the relay is activated, the buzzer sounds an alarm, and the power supply to the running mechanism is automatically cut off to avoid collisions with pedestrians or obstacles. The limit switch 102 is used to control the travel of the mechanical equipment and provide limit protection to prevent the walking mechanism body from detaching from the I-shaped guide rail 100. The principle is existing technology and has been disclosed in the existing CN220578236U technology, so it will not be described again here.

[0031] The walking mechanism body includes:

[0032] The U-shaped seat 1 has two guide wheels 11 rotatably mounted on its inner walls on both sides, which are in rolling contact with the bottom inner wall of the I-shaped guide rail 100. Two positioning wheels 12 are rotatably mounted on its inner walls on both sides. The bottom of the I-shaped guide rail 100 is in rolling contact with the corresponding two positioning wheels 12. Two circular through holes are opened on the inner walls on both sides of the U-shaped seat 1. A first bearing is fixedly sleeved in the circular through hole. A rotating shaft is fixedly sleeved in the inner ring of the first bearing. The guide wheels 11 are fixedly sleeved on the corresponding rotating shaft. The first bearing and the rotating shaft serve to rotate the guide wheels 11.

[0033] The movable box 2 is fitted onto the bottom of the outer side of the U-shaped base 1, and multiple ventilation holes 22 are provided on the inner rear wall of the movable box 2.

[0034] The pressure-controlled lifting vertical guide assembly is installed inside the mobile box 2;

[0035] The walking drive assembly is installed on the pressure-controlled lifting vertical guide assembly and is pressed tightly against the bottom of the I-shaped guide rail 100. The pressure-controlled lifting vertical guide assembly is used to monitor the pressing force between the walking drive assembly and the bottom of the I-shaped guide rail 100 in real time and drive it to always keep the pressure controlled and taut against the bottom of the I-shaped guide rail 100.

[0036] Specifically, the movable box 2 is fixedly attached to the outer bottom of the U-shaped seat 1 by welding.

[0037] Furthermore, the pressure-controlled lifting vertical guide assembly includes an electric telescopic rod 4 fixedly connected to the inner wall of the bottom of the movable box 2. A U-shaped plate 31 is provided above the electric telescopic rod 4. Two L-shaped guide rods 3 are fixedly connected between the inner walls of both sides of the movable box 2 and its bottom inner wall. An outer edge is integrally provided on the bottom of both sides of the U-shaped plate 31. The outer edge is slidably fitted onto the corresponding two L-shaped guide rods 3. Two vertical guide holes are opened at the top of the outer edge, which are slidably fitted onto the outer side of the corresponding L-shaped guide rods 3, so as to guide the vertical sliding of the U-shaped plate 31. A pressure sensor 41 is fixedly connected between the extended end of the electric telescopic rod 4 and the bottom of the U-shaped plate 31. A PLC controller 42 is fixedly installed on the bottom right side of the movable box 2. The pressure sensor 41 and the electric telescopic rod 4 are both electrically connected to the PLC controller 42.

[0038] The electric telescopic rod 4, pressure sensor 41, PLC controller 42, L-shaped guide rod 3, and U-shaped plate 31 are configured to work together. The PLC controller 42 is used to pre-set the opening and closing pressure value of the electric telescopic rod 4 according to the walking and clamping pressure requirements. When the pressure value is lower than the preset value, the PLC controller 42 controls the electric telescopic rod 4 to start forward, which drives the pressure sensor 41 to move upward. The pressure sensor 41 drives the U-shaped plate 31 to move upward. When the U-shaped plate 31 is restricted by the upper structure and cannot move upward further, the squeezing force applied by the electric telescopic rod 4 to the pressure sensor 41 increases under relative squeezing force. The pressure sensor 41 monitors the pressure and transmits the pressure value to the PLC controller 42. When the preset value is reached, the PLC controller 42 controls the electric telescopic rod 4 to close, and waits for the pressure to fall below the preset value again to continue the automatic pressure control adjustment.

[0039] Furthermore, the walking drive assembly includes a servo brake motor 5 and a reducer 51 fixedly mounted on the inner right side of the U-shaped plate 31. The input shaft of the reducer 51 and the output shaft of the servo brake motor 5 both extend outside the U-shaped plate 31 and are fixedly connected to drive wheels 52. The two drive wheels 52 are connected to the same synchronous belt. A driven wheel 53, fixedly connected to the output shaft of the reducer 51, is rotatably mounted on the inner left side of the U-shaped plate 31. A second bearing is fixedly connected to the inner left side of the U-shaped plate 31. A round shaft is fixedly fitted inside the inner ring of the second bearing. The right end of the round shaft is welded and fixed to the center of the left side of the driven wheel 53. The round shaft and the second bearing serve to rotate and install the driven wheel 53. The outer side of the driven wheel 53 is covered with anti-slip rubber that is pressed tightly against the bottom of the I-shaped guide rail 100. A rectangular through hole 13 is opened on the bottom inner wall of the U-shaped seat 1. The U-shaped plate 31 and the driven wheel 53 are both located in the rectangular through hole 13 and do not contact its inner wall, so as to allow the U-shaped plate 31 and the driven wheel 53 to pass through.

[0040] The drive wheel 52 is a synchronous wheel with a toothed structure on the outer side, and the synchronous belt is a synchronous belt with a toothed structure on the inner side that meshes with the teeth on the outer side of the drive wheel 52.

[0041] The servo brake motor 5, reducer 51, drive wheel 52, synchronous belt, driven wheel 53, and anti-slip rubber are configured to work together. When the U-shaped plate 31 moves upward, it drives the driven wheel 53 to move upward and squeeze it tightly against the bottom of the I-shaped guide rail 100. In the squeezed state, the I-shaped guide rail 100 uses the driven wheel 53 to block and restrict the U-shaped plate 31 from moving further upward. Through the above-mentioned automatic pressure control, lifting, and squeezing method of the U-shaped plate 31, the effect of intelligent automatic pressure control, lifting, and squeezing the bottom of the I-shaped guide rail 100 by the driven wheel 53 is achieved. This prevents the anti-slip rubber on the driven wheel 53 from separating from the I-shaped guide rail 100 due to friction or other factors, thus preventing the grinding wheel from moving. In addition, the servo brake motor 5 drives the input shaft of the reducer 51 to rotate through the cooperation of the two drive wheels 52 and the synchronous belt. The reducer 51 carries the torque provided by the rotation of the servo brake motor 5. The output shaft of the reducer 51 drives the driven wheel 53 to rotate. The driven wheel 53 drives the anti-slip rubber to rotate. Under the pressure of friction, the rotation enables the wheel to move at the bottom of the I-shaped guide rail 100, thereby driving the U-shaped plate 31 to move. The U-shaped plate 31 drives the U-shaped seat 1 to move through four L-shaped guide rods 3 and the moving box 2. The U-shaped seat 1 drives four guide wheels 11 to roll on the bottom inner wall of the I-shaped guide rail 100. At the same time, the U-shaped seat 1 drives four positioning wheels 12 to roll along the bottom sides of the I-shaped guide rail 100. The four positioning wheels 12 are used to limit and prevent swaying on both sides. When the power of the servo brake motor 5 is turned off, it uses its own brake function to perform the brake operation.

[0042] This embodiment can move steadily on the I-shaped guide rail 100 without swaying. It can monitor the extrusion pressure in real time and automatically control the driven wheel 53 to maintain pressure and tension on the I-shaped guide rail 100 when the extrusion pressure is lower than the preset value. This achieves the effect of always intelligently and automatically maintaining pressure and tension between the driven wheel 53 and the bottom of the I-shaped guide rail 100, avoiding the phenomenon that the anti-slip rubber on the driven wheel 53 will separate from the I-shaped guide rail 100 due to friction and other factors, thus preventing the wheel from rotating and moving. This improves the stability of long-term use. In addition, by using the method that the drive wheel 52, synchronous belt and other structures are all hidden inside the mobile box 2, the risk of them being accidentally bumped, jammed and contaminated is effectively reduced, thus improving the safety of use.

[0043] The usage method of this embodiment is as follows: When the unattended walking mechanism of the belt conveyor is in use, the servo brake motor 5 drives the input shaft of the reducer 51 to rotate through the cooperation of two drive wheels 52 and a synchronous belt. The reducer 51 bears the torque provided by the rotation of the servo brake motor 5, and drives the driven wheel 53 to rotate through the output shaft of the reducer 51. The driven wheel 53 drives the anti-slip rubber to rotate. Under the friction formed by its squeezing with the bottom of the I-shaped guide rail 100, it rotates and moves along the bottom of the I-shaped guide rail 100, thereby driving the U-shaped plate 31 to move. The U-shaped plate 31 drives the U-shaped seat 1 to move through four L-shaped guide rods 3 and the moving box 2 in sequence. The U-shaped seat 1 drives the four guide wheels 11 to roll on the bottom inner wall of the I-shaped guide rail 100. At the same time, the U-shaped seat 1... The four positioning wheels 12 roll along the bottom sides of the I-shaped guide rail 100, and the four positioning wheels 12 are used to limit and prevent swaying on both sides. When the power of the servo brake motor 5 is turned off, it uses its own brake function to perform the brake operation. In addition, the anti-collision photoelectric switch 101, combined with the equipment control system, generates an electrical signal through a phototube. After waveform shaping and amplification, the relay is activated, the buzzer sounds an alarm and automatically cuts off the power of the running mechanism to avoid collisions with pedestrians or obstacles. The limit switch 102 is used to control the stroke of the mechanical equipment and perform limit protection to prevent the walking mechanism body from leaving the I-shaped guide rail 100. The principle is existing technology and has been disclosed in the existing CN220578236U technology, so it will not be described again here.

[0044] The PLC controller 42 pre-sets the opening and closing pressure values ​​of the electric telescopic rod 4 according to the required walking and clamping pressure. When the pressure value is lower than the preset value, the PLC controller 42 controls the electric telescopic rod 4 to start forward, causing it to drive the pressure sensor 41 to move upward. The pressure sensor 41 drives the U-shaped plate 31 to move upward, and the U-shaped plate 31 drives the driven wheel 53 to move upward and clamp it to the bottom of the I-shaped guide rail 100. In the clamped state, the I-shaped guide rail 100 restricts the U-shaped plate 31 by the driven wheel 53, preventing it from moving upward. When the U-shaped plate 31 cannot move upward due to the restriction of the upper structure, the pressure applied by the electric telescopic rod 4 to the pressure sensor 41 increases under relative squeezing pressure. The pressure sensor 41 monitors the pressure and transmits it to the PLC controller 42. When the pressure value of the LC controller 42 reaches the preset value, the PLC controller 42 controls the electric telescopic rod 4 to close. When the pressure value drops below the preset value again, the automatic pressure control adjustment continues. This achieves the effect of real-time monitoring of the extrusion pressure and automatic pressure control and tightening adjustment when the extrusion pressure is lower than the preset value. This ensures that the driven wheel 53 and the bottom of the I-shaped guide rail 100 are always kept in a tight and controlled pressure, avoiding the phenomenon that the anti-slip rubber on the driven wheel 53 will separate from the I-shaped guide rail 100 due to friction and other factors, thus preventing the grinding wheel from moving and displacing. This improves the stability of long-term use. In addition, the drive wheel 52, synchronous belt and other structures are all hidden inside the mobile box 2, which effectively reduces the risk of them being accidentally bumped, jammed and contaminated, and improves the safety of use.

[0045] Example 2

[0046] Reference Figures 3 to 4 Based on Embodiment 1, this embodiment differs from Embodiment 1 in that: the movable box 2 is detachably sleeved on the outer bottom of the U-shaped seat 1, wherein three threaded grooves are provided on both bottom sides of the U-shaped seat 1, and fixing bolts 21 are threaded into the threaded grooves; three bolt holes are provided on both top sides of the movable box 2, and the bolt holes are movably sleeved on the corresponding fixing bolts 21.

[0047] This embodiment allows personnel to disassemble the mobile box 2 to remove the obstruction on its top, facilitating subsequent inspection and maintenance of its interior.

[0048] The method of use in this embodiment is as follows: The difference from the first embodiment is that, based on the first embodiment, it also has the following functions: In addition, by using bolt holes, fixing bolts 21 and threaded grooves, the effect of fixing the movable box 2 to the outer thread of the U-shaped seat 1 is achieved. By using the threaded fixing method, after loosening and disassembling the fixing bolts 21 with a wrench, the movable box 2 can be directly separated from the U-shaped seat 1 downwards. This makes it convenient to remove the obstruction on the top of the movable box 2 in a detachable manner, which is convenient for subsequent personnel to carry out internal inspection and maintenance work.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A belt conveyor unattended walking mechanism, comprising an I-shaped guide rail (100), a plurality of anti-collision photoelectric switches (101) fixed on the top of the left side thereof, and a limit switch (102) fixed on the bottom front side thereof, characterized in that: The walking mechanism body is installed on the I-shaped guide rail (100), and the walking mechanism body comprises: A U-shaped seat (1) is provided with two guide wheels (11) rotatably installed on the inner walls of both sides, which are in rolling contact with the bottom inner wall of the I-shaped guide rail (100), and two positioning wheels (12) are rotatably installed on the inner walls of both sides, and the bottoms of both sides of the I-shaped guide rail (100) are in rolling contact with the corresponding two positioning wheels (12); A moving box (2) is sleeved on the outer bottom of the U-shaped seat (1); A pressure control lifting vertical guide assembly is installed in the moving box (2); A walking driving assembly is installed on the pressure control lifting vertical guide assembly and is in extrusion contact with the bottom of the I-shaped guide rail (100).

2. The unattended walking mechanism of the belt conveyor according to claim 1, characterized in that: The moving box (2) is fixedly sleeved on the outer bottom of the U-shaped seat (1) by welding.

3. The unattended walking mechanism of the belt conveyor according to claim 1, characterized in that: The moving box (2) is detachably sleeved on the outer bottom of the U-shaped seat (1).

4. The unattended walking mechanism of the belt conveyor according to claim 3, characterized in that: Three threaded grooves are formed in the bottoms of both sides of the U-shaped seat (1), and fixed bolts (21) are threadedly connected in the threaded grooves; three bolt through holes are formed in the tops of both sides of the moving box (2), and the bolt through holes are movably sleeved on the corresponding fixed bolts (21).

5. The unattended walking mechanism of the belt conveyor according to claim 1, characterized in that: The pressure control lifting vertical guide assembly comprises an electric telescopic rod (4) fixedly connected to the inner wall of the bottom of the moving box (2), a U-shaped plate (31) arranged above the electric telescopic rod (4), two L-shaped guide rods (3) fixedly connected between the inner walls of both sides of the moving box (2) and the inner wall of the bottom thereof, outer edges integrally arranged at the bottoms of both sides of the U-shaped plate (31) and movably sleeved on the corresponding two L-shaped guide rods (3), a pressure sensor (41) fixedly connected between the extension end of the electric telescopic rod (4) and the bottom of the U-shaped plate (31), and a PLC controller (42) fixedly installed on the right bottom of the moving box (2), wherein the pressure sensor (41) and the electric telescopic rod (4) are electrically connected to the PLC controller (42).

6. An unattended walkway mechanism for a belt conveyor as claimed in claim 5 wherein: The walking driving assembly comprises a servo brake motor (5) and a speed reducer (51) fixedly installed on the right inner wall of the U-shaped plate (31), the input shaft of the speed reducer (51) and the output shaft of the servo brake motor (5) are both extended to the outside of the U-shaped plate (31) and fixedly connected with driving wheels (52), the same synchronous belt is drivingly connected to the two driving wheels (52), a driven wheel (53) fixedly connected with the output shaft of the speed reducer (51) is rotatably installed on the left inner wall of the U-shaped plate (31), and antiskid rubber is bonded and coated on the outer side of the driven wheel (53) and is in extrusion contact with the bottom of the I-shaped guide rail (100).

7. An unattended walkway mechanism for a belt conveyor as claimed in claim 6, characterized in that: A rectangular through hole (13) is formed in the bottom inner wall of the U-shaped seat (1), the U-shaped plate (31) and the driven wheel (53) are located in the rectangular through hole (13) and are not in contact with the inner wall thereof, and a plurality of air holes (22) are formed in the rear inner wall of the moving box (2).

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