Limiting mechanism of coal plough

Abstract

The utility model relates to the technical field of limiting of coal ploughs, in particular to a limiting mechanism of a coal plough, and solves the problem that in the prior art, the coal plough possibly has excessive displacement due to inertia and the like when working, and equipment is damaged. A limiting mechanism of a coal plough comprises a fixing frame, a motor is fixedly connected to the side face of the fixing frame, an output shaft of the motor is in transmission connection with a rotating rod, a plowshare is arranged on the surface of the rotating rod through a buffering mechanism, two extruding mechanisms distributed up and down are fixedly connected to one side of the plowshare, and two extending rods are fixedly connected to the side face of the fixing frame. A limiting switch is fixedly connected to the surface of the extension rod and electrically connected with the motor. According to the utility model, the motor and the conveyor belt can be protected in the use process, and the motor and the conveyor belt are prevented from being damaged due to excessive rotation of the plowshare, so that the equipment is protected in the use process, and the service life of the equipment can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of coal plow limiting, in particular to a coal plow limiting mechanism. Background Art

[0002] A coal plow is a common component of coal conveying equipment. When the conveyor belt is running, the coal flows along the conveyor belt. At this time, the plowshare of the coal plowshare is lowered by the drive device and contacts the conveyor belt. Due to the certain angle and pressure between the plowshare and the conveyor belt, the coal flow is pushed to the side of the conveyor belt as it passes through the plowshare, leaving the conveyor belt and falling into the designated unloading area. When plowing is no longer needed, the drive device raises the plowshare, maintaining a certain gap between the plowshare and the conveyor belt. This allows the coal flow to pass normally on the conveyor belt without being blocked by the plowshare, ensuring the continuous transportation function of the conveyor belt.

[0003] In the prior art, when the plowshare plowshare descends, it contacts the coal conveyor belt and cuts into the material flow. If the conveying coal encounters an obstruction from the plowshare during its forward movement, it will be unloaded from one or both sides of the conveyor belt, following the plowshare's guidance. This distributes the material from the main conveyor line to other equipment, such as silos and branch coal conveyors, that require it. In a coal conveying system with multiple receiving points, rational material distribution ensures that each receiving point (such as a coal silo) receives the appropriate amount of material, preventing some silos from being overfilled while others are understocked. Different production processes or equipment require different amounts and times for material. The plowshare lowers its plowshare to redirect the material flow, allowing it to be delivered to the production equipment or storage unit in need. During the plowshare's lifting process, an upward limit switch monitors whether the plowshare has reached the predetermined height. When the plowshare reaches the set position, the upward limit switch activates, sending a signal to the control system to stop the motor driving the plowshare. When the plowshare descends, the downward limit switch monitors whether the plowshare has fully descended and is in its operating position. Once the coal plow is lowered into place, the lowering limit switch is triggered to notify the control system to ensure that the coal plow accurately cuts into the coal flow and realizes the normal distribution of the coal flow.

[0004] However, the limiting method of existing coal plows is often not accurate enough during operation, which may cause excessive displacement of the coal plow due to inertia and other reasons during operation. This not only affects the accuracy of unloading, but may also cause damage to the equipment itself and reduce the service life of the equipment. Utility Model Content

[0005] The utility model aims to provide a coal plow limiting mechanism, which solves the problem in the prior art that the coal plow may be excessively displaced due to inertia and other reasons during operation, causing damage to the device itself.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A coal plow limiting mechanism includes a fixed frame, a motor is fixedly connected to the side of the fixed frame, the output shaft of the motor is transmission-connected to a rotating rod, a plow head is provided on the surface of the rotating rod through a buffer mechanism, one side of the plow head is fixedly connected to two squeezing mechanisms distributed up and down, two extension rods are fixedly connected to the side of the fixed frame, a limit switch is fixedly connected to the surface of the extension rod, and the limit switch is electrically connected to the motor.

[0008] Preferably, the buffer mechanism includes two fixing rods sleeved on the surface of the rotating rod, and the fixing rods are fixedly connected to the surface of the plowshare.

[0009] Preferably, a T-shaped insertion rod is fixedly connected between the two fixed rods, a receiving groove is opened on the surface of the rotating rod, the insertion rod is located inside the adjacent receiving groove, and the insertion rod is elastically connected to one end of the receiving groove through an extrusion spring.

[0010] Preferably, a shielding plate is fixedly connected to the surface of the insertion rod, and two fixing blocks are fixedly connected to the surface of the rotating rod.

[0011] Preferably, the squeezing mechanism includes a squeezing rod fixedly connected to the side of the plowshare, and one end of the squeezing rod is rotatably connected to a squeezing block.

[0012] Preferably, a U-shaped anti-movement block is fixedly connected to the side of the extrusion block, a protrusion block is fixedly connected to the side of the extrusion rod, a screw is threadedly connected to the surface of the protrusion block, and one end of the screw is located inside the anti-movement block.

[0013] The utility model has the following beneficial effects:

[0014] When the coal plow is in use, the plowshare is driven by the motor to rotate. During this process, the plowshare can obtain a redundancy through the accommodating groove and the extrusion spring. When the plowshare rotates excessively, the accommodating groove can prevent the plowshare from directly exerting force on the rotating rod and the conveyor belt. The motor and the conveyor belt can be protected during use to prevent the plowshare from damaging the motor and the conveyor belt due to excessive rotation. Therefore, the equipment is protected during use and the service life of the equipment can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the side structure of the middle extrusion mechanism;

[0018] Figure 3 for Figure 1 Schematic diagram of the side structure;

[0019] Figure 4 for Figure 1 A schematic diagram of the side structure of the middle buffer mechanism;

[0020] Figure 5 for Figure 4 Schematic diagram of the expansion after the middle shield is opened.

[0021] In the figure: 1. Fixed frame; 2. Motor; 3. Rotating rod; 4. Buffer mechanism; 5. Plowshare; 6. Extrusion mechanism; 7. Extension rod; 8. Limit switch; 401. Fixed rod; 402. Insertion rod; 403. Receiving slot; 404. Extrusion spring; 405. Shielding plate; 406. Fixed block; 601. Extrusion rod; 602. Extrusion block; 603. Anti-movement block; 604. Protruding block; 605. Screw. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Reference Figure 1-5, a coal plow limiting mechanism includes a fixed frame 1, the side of the fixed frame 1 is fixedly connected to a motor 2, the output shaft of the motor 2 is connected to a rotating rod 3, and a plow head 5 is provided on the surface of the rotating rod 3 through a buffer mechanism 4. When the coal plow needs to be used, the plow head 5 needs to be rotated up and down. At this time, the motor 2 on the fixed frame 1 is started, and the motor 2 can drive the rotating rod 3 to rotate. When the rotating rod 3 rotates, the plow head 5 can be driven to rotate through the buffer mechanism 4, so that the plow head 5 rises or falls, thereby meeting the transportation of coal, and the buffer mechanism 4 can also protect the rotation of the plow head 5, so that the safety of the equipment is higher, and the plow head 5 is One side is fixedly connected to two squeezing mechanisms 6 distributed up and down, and the side of the fixed frame 1 is fixedly connected to two extension rods 7. The surface of the extension rod 7 is fixedly connected to the limit switch 8. The limit switch 8 is a switch in the existing technology. The functions are all achievable by the existing technology and it does not have any special functions. The limit switch 8 is electrically connected to the motor 2. When the plow head 5 rises or falls, the squeezing mechanism 6 will move with the plow head 5. In this process, the squeezing mechanism 6 will squeeze the adjacent limit switch 8, so that the limit switch 8 will cut off the power to the motor 2 and stop it, so that the plow head 5 can stop in a suitable place, which can facilitate the adjustment of the plow head 5 to rise and fall.

[0024] Furthermore, the buffer mechanism 4 includes two fixed rods 401 mounted on the surface of the rotating rod 3. The fixed rods 401 are fixedly connected to the surface of the plowshare 5. When the motor 2 drives the rotating rod 3 to rotate, the plowshare 5 can rotate stably through the fixed rods 401, thereby ensuring the stability of the rotation trajectory of the plowshare 5 and preventing it from skewing.

[0025] Preferably, a T-shaped insertion rod 402 is fixedly connected between the two fixed rods 401, and a receiving groove 403 is provided on the surface of the rotating rod 3. The insertion rod 402 is located inside the adjacent receiving groove 403, and one end of the insertion rod 402 and the receiving groove 403 is elastically connected by an extrusion spring 404. When the plow head 5 needs to be rotated upward, the motor 2 is started and the motor 2 can rotate. During the rotation, the receiving groove 403 on the rotating rod 3 can be pressed against the insertion rod 402, thereby driving the insertion rod 402 to rotate. When the insertion rod 402 moves, the fixed rod 401 can rotate synchronously, thereby driving the plow head 5 to rotate. Until it rotates to the upper extrusion mechanism 6 to squeeze the limit switch 8 to turn off the motor 2, the rotating rod 3 stops rotating, and the inertia of the plow head 5 can be squeezed inside the receiving groove 403. The spring 404 absorbs, and then the plowshare 5 is reset by the elastic force of the squeezing spring 404 and gravity, so that the insertion rod 402 is again fitted with one end of the receiving slot 403, so that the plowshare 5 can obtain a redundancy. When the plowshare 5 needs to be rotated downward, the plowshare 5 can make the insertion rod 402 fit with one end of the receiving slot 403 through its own gravity and the elastic force of the squeezing spring 404. At this time, when the starting motor 2 drives the rotating rod 3 to rotate in the opposite direction, it can drive the plowshare 5 to rotate downward until the plowshare 5 fits with the conveyor belt. At this time, the squeezing mechanism 6 below squeezes the limit switch 8 to turn off the motor 2, so that the plowshare 5 stops rotating, and the insertion rod 402 on the plowshare 5 has a certain redundancy in the receiving slot 403 to prevent the plowshare 5 from excessively squeezing the conveyor belt and damaging the transmission point during rotation transition.

[0026] Preferably, a shielding plate 405 is fixedly connected to the surface of the insertion rod 402, and two fixed blocks 406 are fixedly connected to the surface of the rotating rod 3. During the movement of the insertion rod 402 inside the accommodating groove 403, the shielding plate 405 can block the extrusion spring 404 inside the accommodating groove 403 to prevent the extrusion spring 404 from popping out of the accommodating groove 403. The shielding plate 405 can move with the insertion rod 402, thereby conveniently blocking the inside of the accommodating groove 403, and the fixed block 406 can rotate with the rotating rod 3, thereby conveniently driving the fixed rod 401 to rotate by applying force to the fixed rod 401, and can assist the accommodating groove 403 in applying force to the insertion rod 402 to drive the plowshare 5 to rotate.

[0027] Preferably, the extrusion mechanism 6 includes an extrusion rod 601 fixedly connected to the side of the plowshare 5, and one end of the extrusion rod 601 is rotatably connected to the extrusion block 602. When the plowshare 5 rotates, the extrusion rod 601 is driven to move toward the limit switch 8, so that the extrusion block 602 on the extrusion rod 601 squeezes the limit switch 8 to stop the motor 2. When the motor 2 needs to be restarted, the extrusion block 602 can be rotated out of the limit switch 8, so that the motor 2 can be restarted, and the rotation direction of the motor 2 can be adjusted before starting.

[0028] Preferably, a U-shaped anti-movement block 603 is fixedly connected to the side of the extrusion block 602, and a protrusion block 604 is fixedly connected to the side of the extrusion rod 601. A screw 605 is threadedly connected to the surface of the protrusion block 604, and one end of the screw 605 is located inside the anti-movement block 603. When the extrusion block 602 is driven by the extrusion rod 601, the screw 605 needs to be inserted into the anti-movement block 603 to stabilize the extrusion block 602. When the extrusion block 602 needs to be rotated, the screw 605 on the protrusion block 604 can be rotated so that the screw 605 is disengaged from the anti-movement block 603, so that the extrusion block 602 can be easily rotated, thereby conveniently restarting the motor 2.

[0029] In summary:

[0030] When the coal plow is needed, the plowshare 5 needs to be rotated and adjusted for easy use. When the plowshare 5 is rotated, the motor 2 on the fixed frame 1 is started, and the motor 2 can rotate the rotating rod 3 through the output shaft. During the rotation, the rotating rod 3 can drive the insertion rod 402 to rotate through the accommodating groove 403. When the insertion rod 402 rotates, it can drive the plowshare 5 on the fixed rod 401 to rotate synchronously, so that the plowshare 5 can be adjusted conveniently. During this process, the baffle 405 can conveniently block the extrusion spring 404 inside the accommodating groove 403, and can also assist in applying force to the fixed rod 401 through the fixed block 406, so that the fixed rod 401 can be conveniently driven to rotate. After the plowshare 5 moves to the designated location, the extrusion rod 601 on the side of the plowshare 5 drives the extrusion block 602 squeezes the limit switch 8 on the extension rod 7, causing the motor 2 to stop rotating. Later, when it is necessary to restart the motor 2, the screw 605 on the protruding block 604 is rotated so that the screw 605 leaves the anti-movement block 603, thereby conveniently rotating the squeezing block 602, so that the limit switch 8 is no longer squeezed, and the motor 2 can be conveniently started to continue adjusting the plowshare 5. Through the above structure, when the plowshare 5 needs to be adjusted, the accommodating groove 403 and the insertion rod 402 can be conveniently provided with redundancy for the plowshare 5, so that when the plowshare 5 is rotated and adjusted, the motor 2 and the conveyor belt will not be damaged due to inertia or rotation transition, and the use of the plowshare 5 can be protected, so that the use of the plowshare 5 can ensure the safety of the equipment, reduce the loss of the equipment, and increase the service life of the equipment.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal plow limiting mechanism, comprising a fixing frame (1), characterized in that: The side of the fixed frame (1) is fixedly connected to a motor (2), the output shaft of the motor (2) is connected to a rotating rod (3) in a transmission manner, a plowshare (5) is provided on the surface of the rotating rod (3) via a buffer mechanism (4), one side of the plowshare (5) is fixedly connected to two squeezing mechanisms (6) distributed in an upper and lower manner, the side of the fixed frame (1) is fixedly connected to two extension rods (7), the surface of the extension rod (7) is fixedly connected to a limit switch (8), and the limit switch (8) is electrically connected to the motor (2).

2. A coal plow limiting mechanism according to claim 1, characterized in that: The buffer mechanism (4) comprises two fixed rods (401) sleeved on the surface of the rotating rod (3), and the fixed rods (401) are fixedly connected to the surface of the plowshare (5).

3. A coal plow limiting mechanism according to claim 2, characterized in that: A T-shaped insertion rod (402) is fixedly connected between the two fixed rods (401), a receiving groove (403) is provided on the surface of the rotating rod (3), the insertion rod (402) is located inside the adjacent receiving groove (403), and one end of the insertion rod (402) is elastically connected to the receiving groove (403) via a compression spring (404).

4. A coal plow limiting mechanism according to claim 3, characterized in that: A shielding plate (405) is fixedly connected to the surface of the insertion rod (402), and two fixing blocks (406) are fixedly connected to the surface of the rotating rod (3).

5. The coal plow limiting mechanism according to claim 1, characterized in that: The squeezing mechanism (6) comprises a squeezing rod (601) fixedly connected to the side of the plowshare (5), and one end of the squeezing rod (601) is rotatably connected to a squeezing block (602).

6. A coal plow limiting mechanism according to claim 5, characterized in that: A U-shaped anti-movement block (603) is fixedly connected to the side of the extrusion block (602), a protrusion block (604) is fixedly connected to the side of the extrusion rod (601), a screw rod (605) is threadedly connected to the surface of the protrusion block (604), and one end of the screw rod (605) is located inside the anti-movement block (603).

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