Crawler-type self-propelled engine tail

Abstract

This tracked self-propelled tail conveyor belongs to the field of conveying equipment technology. It includes an electrically driven tracked chassis, an electric belt conveyor, a steering mechanism, a fixed support base, and a detection circuit. The electrically driven tracked chassis, electric belt conveyor, steering mechanism, and fixed support base are installed together, with the detection circuit housed in the electrical control box of the tracked chassis. This new type uses a tracked chassis with better performance as the carrier, allowing for convenient operation between upstream and downstream processes. Once in position, it can be limited by the fixed support base, preventing adverse effects from equipment displacement. During operation, the motor reduction mechanism, via drive gears and driven gears, can drive the electric belt conveyor to rotate to any angle, enabling better connection between the equipment and upstream and downstream processes, improving work efficiency. If the equipment tilts to the left or right at a certain angle, an alarm will be triggered to prompt the operator to adjust, ensuring stable and reliable operation as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of conveyor technology, and in particular to a tracked self-moving tail section. Background Technology

[0002] Self-propelled tail section (abbreviated as self-propelled tail section) is a key connecting device in fully mechanized coal mining and tunneling faces, used between belt conveyors and transfer conveyors. It features self-moving, adjustment, and correction capabilities, primarily used for the rapid advancement needs of high-yield and high-efficiency working faces. Its main structure includes a main frame, hydraulic system, and expansion modules, featuring self-moving, adjustment, and efficient connection functions. The upper part of the self-propelled tail section also has an electrically driven belt conveyor, which transfers materials from one workstation to another upon arrival (the conveyor belt has multiple supporting rollers at both ends). During operation, using hydraulic cylinders and the transfer conveyor or base plate as fulcrums, lifting, translating, and forward movement are achieved through sliding friction. The operation process includes frame lifting, push-cylinder advancement, and track reset. A single relocation takes only 30-40 seconds, greatly improving work efficiency.

[0003] With the advancement of industrial technology, the functions of self-moving conveyor tails are becoming increasingly diverse. For example, the authorized patent in my country, patent number "201310093543.8," entitled "Hydraulic Self-Moving Conveyor Tail Device," states that "this invention's hydraulic self-moving conveyor tail device achieves self-movement through mechanized control, thereby moving the conveyor tail, eliminating manual operation, increasing work efficiency, and ensuring safe and convenient use." As can be seen above, although the invention achieves the described technical effects, it still suffers from structural limitations, similar to other existing technologies in the field, and the following technical problems remain. Specifically, the hydraulically driven movement of the equipment requires a high degree of ground flatness, resulting in relatively poor maneuverability compared to tracked mechanisms. Furthermore, when deviation occurs (including adjustments and changes in the positions of the two sets of equipment between upstream and downstream processes), adjustment requires manipulating multiple cylinders in different working modes through the hydraulic control system, making the entire adjustment structure complex and inconvenient for operators. Additionally, it lacks a warning function; if the equipment tilts to one side due to softer ground or other factors, the operator cannot be promptly alerted, negatively impacting material transport. Utility Model Content

[0004] To overcome the shortcomings of existing self-propelled tail cranes, which are limited by their structure and have the drawbacks described in the background art, this utility model provides a self-propelled tail crane that uses a tracked chassis with better performance as a carrier. This allows it to easily move between upstream and downstream processes, and once it reaches its designated position, it can be limited by a support seat to prevent the adverse effects of displacement on the work. Furthermore, if the entire equipment tilts to one side during operation, it can promptly alarm and prompt the staff to make adjustments, thus ensuring the stable and reliable operation of the equipment as much as possible.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] The tracked self-propelled tail section includes an electrically driven tracked chassis, an electric belt conveyor, a steering mechanism, a fixed support base, and a detection circuit. The upper part of the electric tracked chassis has a mounting groove. The steering mechanism includes a motor reduction gear, a drive gear, a driven gear, and guide rollers. The drive gear is fixedly mounted on the shaft of the motor reduction gear. A support base is fixedly mounted at the lower end of the mounting groove, and a bearing is fixedly mounted on the support base. A shaft is fixedly mounted inside the inner ring of the bearing. The upper end of the shaft is fixedly mounted on the lower end of the frame of the electric belt conveyor. The driven gear is fixed... The motor reduction gear is fixedly installed on one side inside the mounting slot, with the driving gear and driven gear meshing. There are multiple sets of guide rollers, which are respectively installed on the front and rear sides of the lower end of the electric belt conveyor frame. There are multiple sets of fixed support seats, each set including an electric push rod and a support plate. The support plate is fixedly installed on the lower end of the electric push rod. The upper ends of the electric push rods of the multiple sets of fixed support seats are respectively fixedly installed around the frame of the electric belt conveyor. The detection circuit is installed in the electrical control box of the electric drive tracked chassis.

[0007] Furthermore, the driving gear and the driven gear mesh, the number of teeth of the driving gear is less than the number of teeth of the driven gear, and the upper end of the driving gear is spaced apart from the lower end of the frame of the electric belt conveyor.

[0008] Furthermore, the guide roller includes a fixed seat, a shaft A, and a rotating cylinder. The shaft A is laterally rotatably installed inside the rotating cylinder. The lower ends of the fixed seat are respectively fixedly installed on the upper ends of the shaft A. The fixed seats of multiple sets of guide rollers are laterally distributed and fixedly installed at intervals on the lower end of the frame of the electric belt conveyor.

[0009] Furthermore, the lower end of the rotating cylinder of the multiple sets of guide rollers and the upper end of the vehicle body of the electric drive tracked chassis are in rotatable contact.

[0010] Furthermore, the detection circuit includes a probe, a resistor, a thyristor, and an alarm. The probe includes a fixed plate, a swing rod, a contact seat, and a metal ball. A shaft B is fixedly mounted on the upper end of the fixed plate, and the upper end of the swing rod is rotatably mounted on the outside of the shaft B. The metal ball is fixedly mounted on the lower end of the swing rod. There are at least two contact seats, which are respectively fixedly mounted on both sides of the lower end of the fixed plate. The anode of the thyristor is electrically connected to the shaft B. The two contact seats are electrically connected to one end of the resistor, and the other end of the resistor is electrically connected to the control electrode of the thyristor. The cathode of the thyristor is electrically connected to the positive power input terminal of the alarm.

[0011] Furthermore, the fixing plate is made of insulating material, the shaft B, the swing rod and the contact seat are made of metal, the metal ball is located between the inner sides of the two contact seats and is spaced apart, and the rear side of the swing rod and the metal ball is spaced apart from the front side of the fixing plate.

[0012] Furthermore, the fixing plates are fixedly installed inside the electric drive tracked chassis in a front-to-back distribution. When the electric drive tracked chassis tilts to the left or right, the metal balls contact the inner sides of the two contact seats on both sides respectively.

[0013] Compared with the prior art, the advantages of this utility model are as follows: This new model uses a tracked chassis with better performance as a carrier, which can easily run between upstream and downstream processes. After running into position, it can be limited by a fixed support seat to prevent the adverse effects of equipment displacement on the work. During operation, the motor reduction mechanism can drive the electric belt conveyor to rotate to any angle through the drive gear and driven gear, so that the equipment can be better connected with the upstream and downstream processes, thereby improving work efficiency. Under the action of detection circuits, the equipment can be promptly alarmed to prompt the staff to make adjustments after the overall equipment tilts to the left or right at a certain angle (for example, greater than 4°), thus ensuring the stable and reliable operation of the equipment as much as possible. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 , 3 Figures 4 and 5 are partial structural diagrams of this utility model.

[0017] Figure 5 This is the circuit diagram of this utility model. Detailed Implementation

[0018] Figure 1 , 2As shown in Figures 3, 4, and 5, the tracked self-propelled tail section includes an electric tracked chassis 1, an electric belt conveyor 2, a power switch, a steering mechanism, a fixed support base 5, a power module T1, and a detection circuit 3. The electric tracked chassis 1 has a recessed mounting groove 101 in the upper center of its body. The steering mechanism includes a motor reduction gear M, a drive gear 41, a driven gear 42, and a guide roller 43. The drive gear 41 is fixedly mounted on the shaft of the motor reduction gear M. A fixed base 44 is fixedly mounted at the lower end of the mounting groove. A bearing 441 is fixedly mounted at the upper and lower ends of the fixed base 44. A shaft 45 is fixedly mounted inside the inner rings of the two bearings 441. The upper end of the shaft 45 is fixedly mounted on the electric belt conveyor. At the lower center of the frame of machine 2, the driven gear 42 is fixedly installed on the upper part of the shaft 45 and located between the lower end of the frame and the upper end of the fixed seat 44; the motor reduction device M is fixedly installed in the lower right side of the middle part of the mounting groove 101; there are 12 sets of guide rollers 43, which are respectively installed on the front and rear sides of the lower end of the frame of electric belt conveyor 2; there are four sets of fixed support seats 5, each set of fixed support seats 5 includes an electric push rod M1 and a support plate 51, the support plate 51 is fixedly installed at the lower end of the movable column of the electric push rod M1, and the cylinders of the electric push rods M1 of the four sets of fixed support seats are respectively vertically installed around the lower end of the frame of electric belt conveyor 2; the power switch, power module T1, and detection circuit 3 are installed in the electrical control box 6 of the electric drive tracked chassis.

[0019] Figure 1 , 2As shown in Figures 3, 4, and 5, the driving gear 41 and the driven gear 42 mesh, with the driving gear 41 having fewer teeth than the driven gear 42, and the upper end of the driving gear 41 being spaced apart from the lower end of the frame of the electric belt conveyor 2. The guide roller 43 includes a fixed seat 431, a shaft A432, and a rotating cylinder 433. Bearings are fixedly installed on the middle of both sides of the hollow rotating cylinder 433. The shaft A432 is laterally fixed inside the inner rings of the two bearings. The lower ends of the "n"-shaped fixed seat 431 are fixedly installed on both sides of the upper end of the shaft A432. The fixed seats of the 12 sets of guide rollers are laterally distributed and fixedly installed at intervals on the lower end of the frame of the electric belt conveyor 2 (6 sets at the front end and 6 sets at the rear end, with 2 sets installed on the left and right sides of the lower end of the electric belt conveyor 2). The lower end of the rotating cylinder of the 12 sets of guide rollers is in rotatable contact with the upper end of the body of the electric drive tracked chassis 1. The detection circuit includes a probe, resistor R1, silicon controlled rectifier (SCR) VS, alarm B, and power switch S4. The probe includes a mounting plate 31, a swing rod B, contact seats J, and a metal ball Q. A shaft bZ is fixedly mounted on the upper end of the mounting plate 31. The upper end of the swing rod B is rotatably mounted on the outside of the shaft BZ. The upper end of the metal ball Q is fixedly mounted on the lower end of the swing rod B. There are at least two contact seats J, and the rear sides of the two contact seats J are respectively fixedly mounted on both sides of the lower end of the mounting plate 31. One end of the power switch S4 is connected to the anode of the SCR VS via a wire, and the other end of the power switch S4 is connected to the rear end of the shaft BZ via a wire. The outer ends of the two contact seats J are connected to one end of the resistor R1 via a wire, and the other end of the resistor R1 is connected to the control electrode of the SCR VS via a wire. The cathode of the SCR VS is connected to the positive power input terminal of the alarm B via a wire. The fixed plate 31 is made of insulating material. The shaft BZ, swing rod B, contact seat J, and metal ball Q are made of copper. The metal ball Q is located between the inner sides of the two contact seats J and is spaced a certain distance (8 mm). The swing rod B and the rear side of the metal ball Q are spaced apart from the front side of the fixed plate 31. The fixed plate 31 is fixedly installed in the inner middle of the electric drive tracked chassis 1, distributed front and rear. When the electric drive tracked chassis 1 is tilted to the left or right at a certain angle, the two sides of the metal ball Q contact the inner sides of the two contact seats J respectively. The power input terminals of three power switches S1, S2, and S3 are connected to the AC 220V power supply via wires. The power input terminals of power module T1 are connected to the AC 220V power supply via wires. The power output terminals of power module T1 are connected to the power input terminals of the fourth power switch S (pins 1 and 2), the power input terminal of the detection circuit (thyristor VS anode), and the power input terminal of alarm B (negative terminal) via wires. The power output terminals of the fourth power switch S (pins 3, 4, 5, and 6) are connected to the positive and negative and negative positive terminals of the electric push rods M1 of the four sets of fixed support bases via wires.The power output terminals 2 and 3 of power switch S1 are connected to the two ends of the running capacitor C of the left-side drive motor M2 of the electric tracked chassis via wires. The power output terminals 2 and 3 of power switch S2 are connected to the two ends of the running capacitor C1 of the right-side drive motor M3 of the electric tracked chassis via wires. The power output terminals 2 and 3 of power switch S3 are connected to the two ends of the running capacitor C2 of the motor reduction device M via wires. The other pole of the 220V AC power supply is connected to the main power input terminals of motors M2 and M3 and motor reduction device M via wires.

[0020] Figure 1 , 2 As shown in Figures 3, 4, and 5, after the 220V AC power enters the power input terminal of the power module T1, pins 3 and 4 of the power module T1 output a stable 12V DC power supply, which enters the power input terminal of the power switch S and the detection circuit. This new type uses a tracked chassis 1 with better performance as a carrier, which can easily move between upstream and downstream processes. Specifically, when the operator moves the handles of power switches S1 and S2 to the left, pins 1 and 2 of power switches S1 and S2 are connected respectively. One end of the running capacitors C and C1 of the left and right drive motors M2 and M3 (4KW) of the tracked chassis 1 is energized, and the shafts of drive motors M2 and M3 rotate clockwise. Under the action of multi-stage reduction gears inside the tracked chassis 1 to reduce torque, the tracked chassis 1 moves forward in a straight line. Drive (turn off power switches S1 and S2 after reaching the destination); After the operator moves the handles of power switches S1 and S2 to the right, pins 1 and 3 of power switches S1 and S2 are connected respectively. The other ends of the running capacitors C and C1 of the left and right drive motors M2 and M3 (capacitor-run motors) of the tracked chassis 1 are energized. The shafts of drive motors M2 and M3 rotate counterclockwise. Under the action of the multi-stage reduction gears inside the tracked chassis 1 to reduce the torque, the tracked chassis 1 moves backward in a straight line (turn off power switches S1 and S2 after reaching the destination). Specifically, when the operator moves the handle of power switch S1 or S2 to the left, pins 1 and 2 of power switch S1 or S2 are connected respectively. One end of the running capacitor C and C1 of the drive motor M2 or M3 on the left or right side of the tracked chassis 1 is energized, and the shaft of drive motor M2 or M3 rotates clockwise. Under the action of the multi-stage reduction gear inside the tracked chassis 1 to reduce torque, the tracked chassis 1 moves forward in a straight line and turns right or left (the power switch S1 or S2 is turned off after it reaches the destination).

[0021] Figure 1 , 2As shown in Figures 3, 4, and 5, when the operator moves the handle of power switch S3 to the left, pins 1 and 2, or pins 1 and 3 of power switch S3 are connected, energizing one or both ends of the operating capacitor C2 of the motor reduction device M (4KW, coaxial motor gear reducer). The shaft of motor reduction device M rotates clockwise or clockwise, and then the driving gear 41 drives the driven gear 42 and the electric belt conveyor 2 to rotate counterclockwise or clockwise (one revolution every 20 seconds, power switch S3 is turned off after reaching the desired position). When the operator moves the handle of power switch S to the left or right, pins 1 and 2, and pins 3 and 4, or pins 5 and 6 of power switch S are connected, and the movable columns of the four sets of electric push rods M1 drive the support plate 51 to move up or down. When the support plate 51 touches the ground downwards, it can support the entire equipment. When the support plate 51 moves upwards a certain distance from the ground, it can easily move the entire equipment (power switch S is turned off after reaching the desired position). In this new design, when the tracked chassis 1 tilts to the left or right at an angle less than 4°, the two ends of the metal ball Q do not contact the two contact seats J. Thus, the thyristor VS will not be triggered and conduct, and the alarm B will not be energized or sound, indicating that the overall tilt angle of the equipment does not exceed the threshold and does not affect normal operation. When the tracked chassis 1 tilts to the left or right at an angle greater than 4°, the two ends of the metal ball Q will contact one of the left or right contact seats J. In this case, 12V power will flow through the shaft BZ, the swing arm B, the metal ball Q, and one of the contact seats J into one end of resistor R1. The 12V power is then stepped down and current-limited by resistor R1, triggering the control electrode of the thyristor VS. This triggers the thyristor VS to conduct, and the alarm B will be energized and sound (after the power switch S4 is turned off, the thyristor VS no longer conducts, and the alarm B stops sounding), indicating that the overall tilt angle of the equipment exceeds the threshold and will affect normal operation.

[0022] Figure 1 , 2 As shown in Figures 3, 4, and 5, this new type of equipment uses a tracked chassis with better performance as a carrier, which can easily move between upstream and downstream processes. After reaching its destination, it can be limited by a fixed support seat to prevent the adverse effects of equipment displacement on the work. During operation, the motor reduction mechanism can drive the electric belt conveyor to rotate to any angle through the drive gear and driven gear, so that the equipment can be better connected with the upstream and downstream processes, thereby improving work efficiency. Under the action of detection circuits, the equipment can be promptly alarmed to prompt the staff to make adjustments after the overall equipment tilts to the left or right at a certain angle, thus ensuring the stable and reliable operation of the equipment as much as possible. Figure 5As shown, power module T1 is a finished product of AC 220V to DC 12V power module; electric push rod M1 (200W) is a finished product of reciprocating electric telescopic rod (also replaced by a hydraulic cylinder); power switches S, S1, S2, and S3 are toggle power switches (the operating handles are located outside the opening at the front of the control box for easy operation by staff); alarm BX is an active continuous audible alarm of model MF12V; capacitors C, C1, and C2 are 12μF / 400V; resistor R1 has a resistance of 10K; thyristor VS is model MCR100-1; motor reduction gear M, drive motors M2 and M3 can also be motor reduction gear M, drive motors M2 and M3 with a working voltage of 380V. The electronic components or circuit modules used in this application are all existing mature products, therefore, this application will not elaborate on their working principles.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0024] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tracked self-propelled tail section, comprising an electrically driven tracked chassis, an electric belt conveyor, a steering mechanism, and a fixed support base, characterized in that, It also has a detection circuit; the upper part of the electric drive tracked chassis has a mounting groove, the steering mechanism includes a motor reducer, a drive gear, a driven gear, and guide rollers. The drive gear is fixedly mounted on the rotating shaft of the motor reducer. A support seat is fixedly mounted at the lower end of the mounting groove, and a bearing is fixedly mounted on the support seat. A shaft is fixedly mounted inside the inner ring of the bearing. The upper end of the shaft is fixedly mounted on the lower end of the frame of the electric belt conveyor. The driven gear is fixedly mounted on the upper part of the shaft and located at the lower end of the frame. The motor reducer is fixedly mounted inside the mounting groove on one side. The drive gear and the driven gear mesh. There are multiple sets of guide rollers, which are respectively mounted on the front and rear sides of the lower end of the frame of the electric belt conveyor. There are multiple sets of fixed support seats. Each set of fixed support seats includes an electric push rod and a support plate. The support plate is fixedly mounted on the lower end of the electric push rod. The upper ends of the electric push rods of the multiple sets of fixed support seats are respectively fixedly mounted around the frame of the electric belt conveyor. The detection circuit is installed in the electrical control box of the electric drive tracked chassis.

2. The tracked self-propelled tail section according to claim 1, characterized in that, The driving gear and the driven gear mesh, the number of teeth on the driving gear is less than the number of teeth on the driven gear, and the distance between the upper end of the driving gear and the lower end of the frame of the electric belt conveyor is [not specified].

3. The tracked self-propelled tail section according to claim 1, characterized in that, The guide roller includes a fixed seat, shaft A and a rotating cylinder. Shaft A is installed laterally and rotatably inside the rotating cylinder. The lower ends of the fixed seat are fixedly installed on both sides of the upper ends of shaft A. The fixed seats of multiple sets of guide rollers are laterally distributed and fixedly installed at intervals on the lower end of the frame of the electric belt conveyor.

4. The tracked self-propelled tail section according to claim 3, characterized in that, The lower end of the rotating cylinder of multiple sets of guide rollers and the upper end of the vehicle body of the electric drive tracked chassis make rotational contact.

5. The tracked self-propelled tail section according to claim 1, characterized in that, The detection circuit includes a probe, a resistor, a thyristor, and an alarm. The probe includes a fixed plate, a swing rod, a contact seat, and a metal ball. A shaft B is fixedly mounted on the upper end of the fixed plate. The upper end of the swing rod is rotatably mounted on the outside of the shaft B. The metal ball is fixedly mounted on the lower end of the swing rod. There are at least two contact seats, which are fixedly mounted on both sides of the lower end of the fixed plate. The anode of the thyristor is electrically connected to the shaft B. The two contact seats are electrically connected to one end of the resistor, and the other end of the resistor is electrically connected to the control electrode of the thyristor. The cathode of the thyristor is electrically connected to the positive power input terminal of the alarm.

6. The tracked self-propelled tail section according to claim 1, characterized in that, The fixed plate is made of insulating material, while the shaft B, swing rod, and contact seat are made of metal. The metal ball is located between the inner sides of the two contact seats and is spaced apart. The swing rod and the rear side of the metal ball are spaced apart from the front side of the fixed plate.

7. The tracked self-propelled tail section according to claim 6, characterized in that, The fixing plates are fixedly installed inside the electric drive tracked chassis, distributed front and rear. When the electric drive tracked chassis tilts to the left or right, the metal balls contact the inner sides of the two contact seats on both sides respectively.

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