A belt conveyor with longitudinal tear detection function

Abstract

A belt conveyor with longitudinal tear detection. The purpose is to solve the problem that the current longitudinal tear detection toggle switch stops the conveyor belt suddenly after sensing, but due to the delay in signal transmission and the effect of inertia, even if the rope moves into place, the tip still pushes the lock, which easily damages the toggle switch. The present invention includes: a detection box and a frame plate, two lever detectors for longitudinal tear detection on the bottom surface of the conveyor belt are fixed in the detection box, the two lever detectors are symmetrically arranged, and the connecting rods of the two lever detectors are connected by a touch rod; the bottom of the detection box is hinged to two symmetrically arranged inclined panels, and each inclined panel is fixed with a lever detector for longitudinal tear detection on the inclined surface of the conveyor belt; the two lever detectors for longitudinal tear detection on the bottom surface of the conveyor belt and the two lever detectors for longitudinal tear detection on the inclined surface of the conveyor belt are staggered; the present invention is used for longitudinal tear detection of belt conveyors.

Description

Technical Field

[0001] The invention relates to a belt conveyor, in particular to a belt conveyor with longitudinal tear detection function. Background Art

[0002] Belt conveyor is the abbreviation of belt conveyor. It is a continuous conveying machine that uses a flexible conveyor belt as a material carrying and traction component. An endless conveyor belt surrounds the driving roller and the redirecting roller. The upper and lower branches between the two rollers are supported by several rollers. The material is placed on the upper branch, and the friction between the driving roller and the belt is used to pull the conveyor belt and the material to run.

[0003] When the belt conveyor is in use, the coal being transported often contains sharp debris, which is very easy to cause longitudinal tearing, that is, longitudinal tearing;

[0004] At present, the longitudinal tear detection of belt conveyors is carried out through toggle switches. Two toggle switches are connected together by ropes. When the conveyor belt is longitudinally torn and the tip is exposed, the tip contacts the rope to rotate the arm of the toggle switch, forming an electrical signal to achieve the alarm effect. Since the conveyor belt has a concave structure in the middle, when the conveyor belt is longitudinally torn and the tip is exposed at the inclined part of the conveyor belt, the rotation of the rope will cause the rope and the inclined part of the conveyor belt to break the parallel state, and the distance between the two will increase rapidly. In this way, when the length of the exposed tip is small, the rope cannot be acted on to the toggle switch, so that its detection is limited. At the same time, when the tip of the concave part is exposed too much, it will push the rope to move. After the toggle switch senses, the conveyor belt will stop urgently. However, due to the delay in signal transmission and the action of inertia, even if the rope moves into place, the tip will still push the lock, which can easily damage the toggle switch. Summary of the invention

[0005] In order to solve the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a belt conveyor with longitudinal tear detection to overcome the defects in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides a belt conveyor with longitudinal tear detection, which comprises: a detection box (1) and a frame plate (2), wherein two lever detectors (4) for detecting longitudinal tearing of the bottom surface of the conveyor belt are fixed in the detection box (1), the two lever detectors (4) are symmetrically arranged, and the connecting rods (4-10) of the two lever detectors (4) are connected by a touch rod (17);

[0007] The bottom of the detection box (1) is hinged to two symmetrically arranged inclined panels (5), and each of the inclined panels (5) is fixed with a lever detector (4) for detecting longitudinal tearing of the inclined surface of the conveyor belt;

[0008] Two lever detectors (4) for detecting longitudinal tearing of the bottom surface of the conveyor belt and two lever detectors (4) for detecting longitudinal tearing of the inclined surface of the conveyor belt are arranged in a staggered manner;

[0009] A slope adjuster (9) for adjusting the slope of the inclined panel (5) is fixed at each inclined panel (5) at the bottom of the detection box (1);

[0010] Infrared radiation switches (15) for detecting material leakage are fixed on the front and rear sides of the detection box (1).

[0011] The belt conveyor with longitudinal tear detection function, the lever detector (4) comprises a toggle switch (4-3), and the support arms (4-4) of the toggle switch (4-3) are connected together via a connecting rod (4-10);

[0012] The connecting rod device (4-10) comprises a connecting rod (4-1), the support arm (4-4) of each toggle switch (4-3) is connected to an arm sleeve (4-6) by means of bolts, a lever (4-5) is fixed to the arm sleeve (4-6), and the lever (4-5) is connected to a joint sleeve (4-7) at the end of the connecting rod (4-1) by means of a hinge shaft (4-8);

[0013] The shifting rod (4-5) is fixed with an overload unloading assembly (4-2) for unloading the rotational force of the connecting rod device (4-10);

[0014] A buffer spring (4-9) is connected between the top of the excessive unloading component (4-2) and the joint sleeve (4-7).

[0015] The belt conveyor with longitudinal tear detection function, wherein the slope adjuster (9) comprises a tooth arc (9-1) fixed to the back of the inclined panel (5), the detection box (1) is connected with a support shaft (9-6) via a bearing, the support shaft (9-6) is sleeved with two gears (9-2) and a worm wheel (9-7), each of the gears (9-2) is meshed with the tooth arc (9-1) at a corresponding position, the detection box (1) is connected with the worm (9-4) via a bearing, and the worm (9-4) is meshed with the worm wheel (9-7).

[0016] The belt conveyor with longitudinal tear detection, the excessive unloading component comprises an I-shaped frame (4-2-10) and a rotating rod (4-2-1), the center of the rotating rod (4-2-1) is connected to the I-shaped frame (4-2-10) through a central axis (4-2-6), both sides of the rotating rod (4-2-1) are respectively covered with sliding sleeves (4-2-2), one end of the I-shaped frame (4-2-10) is slidably connected to the insertion rod (4-2-3), and the other end is connected to the insertion rod (4-2-3). One end is slidably connected to the push rod (4-2-8), and a side shaft (4-2-9) is fixed on each of the sliding sleeves (4-2-2), one of the side shafts (4-2-9) passes through the round hole of the insertion rod (4-2-3) and is threadedly connected to a nut, and the other side shaft (4-2-9) passes through the round hole on the push rod (4-2-8) and is threadedly connected to a nut, and the push rod (4-2-8) is sleeved with a support spring (4-2-5);

[0017] The upper end of the insertion rod (4-2-3) is inserted into the U-shaped plate (4-2-4) fixed on the side of the joint sleeve (4-7).

[0018] The belt conveyor with longitudinal tear detection function is described, wherein the bottom surface of the detection box (1) is a stepped bottom surface (6) on which two material collection troughs (7) are provided, and pushers (16) are fixed to the material collection troughs (7), and the bottoms of the two material collection troughs (7) are respectively provided with discharge ports (14).

[0019] In the belt conveyor with longitudinal tear detection function, a height adjuster (10) for adjusting the height of the detection box (1) is fixed at the bottom of the detection box (1).

[0020] The belt conveyor with longitudinal tear detection function, wherein the height adjuster (10) comprises a screw (10-5), a screw sleeve (10-1) and a shaft sleeve (10-3), wherein the screw (10-5) is welded to the frame plate (2), and the shaft sleeve (10-3) is welded to the bottom of the detection box (1), and four sliding rods (10-4) are fixed to the bottom of the detection box (1), and the sliding rods (10-4) pass through the frame plate (2), and the shaft sleeve (10-3) is connected to the screw sleeve (10-1) through a bearing, and the screw sleeve (10-1) is threadedly connected to the screw (10-5), and a fixing nut (10-2) is welded to the bottom of the screw sleeve (10-1).

[0021] The belt conveyor with longitudinal tear detection function, the pusher (16) comprises a driving reduction motor (16-3) and two augers (16-1), each of the augers (16-1) is respectively located in the collecting trough (7), the two ends of the augers (16-1) are connected to the detection box (1) through bearings, a passive gear (16-4) is fixed to the end of the augers (16-1), the output shaft of the driving reduction motor (16-3) is fixed to the driving gear (16-2), and the driving gear (16-2) is meshed with the passive gear (16-4).

[0022] The belt conveyor with longitudinal tear detection function has a socket (3) for inserting a screw rod (10-5) at the bottom of the stepped bottom surface (6) of the detection box (1).

[0023] In the belt conveyor with longitudinal tear detection function, a handle (9-3) is fixed to the end of the worm (9-4).

[0024] Beneficial effects of the present invention:

[0025] 1. The present invention separates the detection of the concave part and the inclined part of the conveyor belt. The detection connecting rod of the inclined part is parallel to the inclined part of the conveyor belt. After the tip is exposed and contacts the connecting rod, the connecting rod will always remain parallel to the conveyor belt, ensuring that the connecting rod can be pushed to move the switch even when the short tip is exposed, thereby ensuring the reliability of the action.

[0026] 2. The present invention sets an overload unloader at each lever detector. After the connecting rod moves into place, the toggle switch is sensed. The connecting rod is slightly pushed due to the delay in signal transmission and the action of inertia. At this time, the connecting rod and the lever are in a rotatable state. The lever position is kept stationary, and the connecting rod rotates under the push of the tip. In this way, the toggle switch can be protected to prevent damage.

[0027] 3. The present invention is provided with an infrared beam switch, which can detect material leakage, and can detect longitudinal tearing leakage when the tip is not exposed, thereby improving the comprehensiveness of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A top view of the present invention;

[0029] Figure 2 It is a front view of the present invention;

[0030] Figure 3 for Figure 1 AA section view;

[0031] Figure 4 for Figure 1 BB section view;

[0032] Figure 5 for Figure 2 The CC section view;

[0033] Figure 6 for Figure 1 A magnified view of the D portion;

[0034] Figure 7 for Figure 3 A magnified view of part E;

[0035] Figure 8 for Figure 4 Magnified view of part F;

[0036] Fig. 9 This is the front view of the present invention when in use;

[0037] Fig.10 A side view of the present invention when in use;

[0038] In the figure: 1. detection box; 2. shelf; 3. socket; 4. lever detector; 5. inclined panel; 6. step bottom; 7. collecting trough; 8. notch; 9. slope adjuster; 10. height adjuster; 11. conveyor belt; 12. roller frame; 13. support beam; 14. discharge port; 15. infrared beam switch; 16. pusher; 17. touch rod; 4-1. connecting rod; 4-2. overload unloader; 4-3. toggle switch; 4-4. support arm; 4-5. lever; 4-6. arm sleeve; 4-7. joint sleeve; 4-8. hinge shaft; 4-9. buffer spring; 4-10. connecting rod; 4-2-1. rotating rod; 4-2-2, sliding sleeve; 4-2-3, plug rod; 4-2-4, U-shaped plate; 4-2-5, support spring; 4-2-6, center axis; 4-2-7, limit sleeve; 4-2-8, push rod; 4-2-9, side axis; 9-1, tooth arc; 9-2, gear; 9-3, handle; 9-4, worm; 9-6, support shaft; 9-7, worm wheel; 10-1, screw sleeve; 10-2, fixing nut; 10-3, bushing; 10-4, sliding rod; 10-5, screw; 16-1, auger; 16-2, driving gear; 16-3, driving reduction motor; 16-4, passive gear; 16-5, auger shaft. DETAILED DESCRIPTION

[0039] In order to further understand the structure, features and other purposes of the present invention, the preferred embodiments are described in detail with reference to the accompanying drawings as follows. The embodiments described in the drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention.

[0040] Reference Figure 1-Figure 8A belt conveyor with longitudinal tear detection, which comprises: a detection box 1 and a frame plate 2, wherein two lever detectors 4 for longitudinal tear detection of the bottom surface of the conveyor belt are fixed in the detection box 1, the two lever detectors 4 are symmetrically arranged, and the connecting rods 4-10 of the two lever detectors 4 are connected by a touch rod 17;

[0041] The bottom of the detection box 1 is hinged to two symmetrically arranged inclined panels 5, and each of the inclined panels 5 is fixed with a lever detector 4 for detecting longitudinal tearing of the inclined surface of the conveyor belt;

[0042] When in use, the inclined plate is first adjusted to a state parallel to the inclined surface of the conveyor belt. At this time, the connecting rod of the lever detector is parallel to the inclined part of the conveyor belt. When the connecting rod is pushed at the tip to make it move, the connecting rod also remains parallel to the conveyor belt, which can ensure the comprehensiveness of the detection.

[0043] Two lever detectors 4 for detecting longitudinal tearing of the bottom surface of the conveyor belt and two lever detectors 4 for detecting longitudinal tearing of the inclined surface of the conveyor belt are arranged in a staggered manner;

[0044] The connecting rods of the two lever detectors for longitudinal tear detection on the bottom surface of the conveyor belt are connected together through a touch rod. The length of the touch rod is greater than the horizontal bottom surface of the conveyor belt. The length of the connecting rods of the two lever detectors for longitudinal tear detection on the inclined surface of the conveyor belt is greater than the inclined part of the conveyor belt, so that comprehensive coverage of the detection can be achieved;

[0045] The two lever detectors 4 for detecting longitudinal tearing of the bottom surface of the conveyor belt and the two lever detectors 4 for detecting longitudinal tearing of the inclined surface of the conveyor belt are arranged in a staggered manner, so as to prevent the movement from being disturbed;

[0046] A slope adjuster 9 for adjusting the slope of the sloped panel 5 is fixed at each of the sloped panels 5 at the bottom of the detection box 1;

[0047] Infrared beam switches 15 for leak detection are fixed on the front and rear sides of the detection box 1. When no tip is exposed during detection, leaks will occur at the longitudinal tearing position. The leaks will be detected by the infrared beam switches, thereby giving an alarm.

[0048] When testing, install the device. After installation, the conveyor belt moves. When longitudinal tearing occurs and the tip is exposed, if the exposed part is at the bottom of the conveyor belt, it will push the touch rod to move after moving to the lever detector, causing the lever switch to sense. The lever switch is associated with the emergency stop of the conveyor belt. After the lever switch is actuated, the conveyor belt will stop suddenly.

[0049] If the exposed part is on the side of the conveyor belt, it will push the connecting rod to move after moving to the lever detector, causing the lever switch to sense. The lever switch is associated with the emergency stop of the conveyor belt, and the conveyor belt will stop suddenly after the lever switch is actuated.

[0050] Even if longitudinal tearing occurs on the side and bottom of the conveyor belt at the same time, and the tip is exposed, detection can be carried out simultaneously to ensure the comprehensiveness of the detection;

[0051] The lever detector 4 includes a toggle switch 4-3, and the arm 4-4 of the toggle switch 4-3 is connected together through a connecting rod 4-10;

[0052] The connecting rod device 4-10 includes a connecting rod 4-1, and each arm 4-4 of the toggle switch 4-3 is connected to an arm sleeve 4-6 by bolts, and a lever 4-5 is fixed on the arm sleeve 4-6, and the lever 4-5 is connected to a joint sleeve 4-7 at the end of the connecting rod 4-1 by a hinge shaft 4-8;

[0053] The lever 4-5 is fixed with an overload unloading assembly 4-2 for unloading the rotation of the connecting rod 4-10;

[0054] A buffer spring 4-9 is connected between the top of the excessive unloading component 4-2 and the joint sleeve 4-7;

[0055] The excessive unloading assembly includes an I-shaped frame 4-2-10 and a rotating rod 4-2-1. The center of the rotating rod 4-2-1 is connected to the I-shaped frame 4-2-10 through a central shaft 4-2-6. The central shaft is welded to the I-shaped frame, and the central shaft passes through the circular hole of the rotating rod and is rotatably connected. The rotating rod 4-2-1 is respectively provided with a sliding sleeve 4-2-2 on both sides. The sliding sleeve can slide on the rotating rod. One end of the I-shaped frame 4-2-10 is slidably connected to the plug rod 4-2-3, and the other end Slidingly connected with the push rod 4-2-8, each of the sliding sleeves 4-2-2 is fixed with a side shaft 4-2-9, one of the side shafts 4-2-9 passes through the round hole of the insertion rod 4-2-3 and is threadedly connected with a nut, and the other side shaft 4-2-9 passes through the round hole on the push rod 4-2-8 and is threadedly connected with a nut, and the push rod 4-2-8 is sleeved with a support spring 4-2-5, the top of the support spring is fixed to the top of the push rod, and the lower part is fixed to the I-frame;

[0056] The upper end of the insertion rod 4-2-3 is inserted into the U-shaped plate 4-2-4 fixed on the side of the joint sleeve 4-7;

[0057] When the toggle detector does not move, the lever of the lever detector for bottom tear detection is in contact with the bottom surface of the detection box. When the tip is exposed to push the touch rod to move, the connecting rod rotates and the lever will slide. A limit sleeve 4-2-7 is fixed on the lever to limit the position of the lever. After the lever moves into place, it indicates that the arm of the toggle switch also moves into place. At this time, the toggle switch senses that when the lever slides, it will drive the rotating rod to rotate, and the rotation of the rotating rod will drive the insertion rod to slide. The upper end of the insertion rod is inserted into the U-shaped plate. When the lever moves into place, the upper end of the insertion rod is detached from the U-shaped plate. At this time, the rotation restriction between the connecting rod and the lever is released. When the tip pushes the touch rod again, it will push the connecting rod to rotate. At this time, the lever will not rotate, so the toggle switch can be protected.

[0058] The slope adjuster 9 includes a tooth arc 9-1 fixed to the back of the inclined panel 5, a support shaft 9-6 is connected to the detection box 1 through a bearing, two gears 9-2 and a worm wheel 9-7 are sleeved on the support shaft 9-6, each of the gears 9-2 is meshed with the tooth arc 9-1 at the corresponding position, the detection box 1 is connected to the worm 9-4 through a bearing, the worm 9-4 is meshed with the worm wheel 9-7, and a handle 9-3 is fixed to the end of the worm 9-4.

[0059] Before testing, the angle of the inclined plate needs to be adjusted to be roughly parallel to the inclined surface of the conveyor belt. By holding the handle and turning the worm, the worm meshes with the worm wheel, which drives the worm wheel to rotate. A worm and two gears are mounted on the support shaft, and the worm and two gears are fixed on the support shaft respectively. The rotation of the worm wheel will cause the gears to rotate, and the gears will mesh with the tooth arcs at the corresponding positions, which will drive the tooth arcs to move, thereby adjusting the angle of the inclined plate. Since the worm gear has a self-locking effect, the inclined plate can maintain a stable angle after movement.

[0060] The bottom surface of the detection box 1 is a stepped bottom surface 6 , on which are two material collecting troughs 7 , pushers 16 are fixed to the material collecting troughs 7 , and the bottoms of the two material collecting troughs 7 are respectively provided with discharge ports 14 .

[0061] After the conveyor belt is torn longitudinally, the torn part will leak material, and the leaked material will leak onto the bottom surface of the step. Since the bottom surface of the step is stepped, the falling material will be concentrated in the aggregate trough. By starting the pusher, the falling material in the aggregate trough can be pushed out and discharged through the discharge port, thus achieving the purpose of cleaning the falling material;

[0062] A height adjuster 10 for adjusting the height of the detection box 1 is fixed to the bottom of the detection box 1 .

[0063] The height adjuster 10 includes a screw 10-5, a screw sleeve 10-1 and a sleeve 10-3. The screw 10-5 is welded on the frame plate 2, and the sleeve 10-3 is welded on the bottom of the detection box 1. Four sliding rods 10-4 are fixed to the bottom of the detection box 1. The sliding rods 10-4 pass through the frame plate 2. The sleeve 10-3 is connected to the screw sleeve 10-1 through a bearing. The screw sleeve 10-1 is threadedly connected to the screw 10-5. A fixing nut 10-2 is welded to the bottom of the screw sleeve 10-1.

[0064] Since the height of the device needs to be adjusted during installation, after the device is fixed to the support beam 13 by bolts, the screw rod is welded to the frame plate, and the fixing nut is turned by a wrench to rotate the screw sleeve, and the screw sleeve is threadedly connected to the screw rod, which will realize the height adjustment of the entire device. The height adjustment is to have a gap of about 1 cm between the bottom surface of the conveyor belt.

[0065] The pusher 16 includes a driving reduction motor 16-3 and two augers 16-1, each of the augers 16-1 is respectively located in the aggregate trough 7, both ends of the augers 16-1 are connected to the detection box 1 through bearings, a passive gear 16-4 is fixed to the end of the augers 16-1, the output shaft of the driving reduction motor 16-3 is fixed to the driving gear 16-2, and the driving gear 16-2 is meshed with the passive gear 16-4.

[0066] The pusher is always running. When pushing materials, the driving reduction motor starts, the electric driving gear rotates, the driving gear engages with the passive gear, which drives the passive gear to rotate and causes the auger to rotate. The auger will push the fallen materials in the aggregate trough to the discharge port and discharge them through here.

[0067] The bottom of the stepped bottom surface 6 of the detection box 1 has a socket 3 for inserting the screw 10 - 5 .

[0068] Working principle: Refer to Figure 9-10When in use, the device is fixed to the support beam 13 by bolts so that it is between the two roller frames 12. When the conveyor belt is torn longitudinally during movement, if a tip is exposed at the longitudinal tearing part, when it moves to the device, if the exposed part is at the bottom of the conveyor belt, it will push the touch rod to move after moving to the lever detector, the connecting rod will rotate, and the push rod will slide. After the push rod moves into place, it indicates that the arm of the toggle switch has also moved into place. At this time, the toggle switch senses that when the push rod slides, it will drive the rotating rod to rotate, and the rotation of the rotating rod will drive the insertion rod to slide. The upper end of the insertion rod is inserted into the U-shaped plate. When the push rod moves into place, the upper end of the insertion rod is detached from the U-shaped plate. At this time, the connecting rod The rotation restriction between the lever and the toggle rod is released. After the lever moves into place, the tip will move due to delay or inertia. When the tip pushes the touch rod again, it will push the connecting rod to rotate. At this time, the lever will not rotate, so the toggle switch can be protected. After the tip is pulled out, the touch rod is contacted with the restriction. Under the action of the buffer spring, the connecting rod will rotate. At the same time, the support arm returns to the initial position under its own action. When the support arm rotates, the push rod is always in contact with the bottom surface of the detection box. At this time, the push rod will slide under the rebound of the support spring, driving the rotating rod to rotate. At this time, the rotating rod drives the insertion rod to slide, so that the upper part of the insertion rod is reinserted into the U-shaped plate, and the rotation between the lever and the connecting rod is restricted again.

[0069] If the exposed part is on the side of the conveyor belt, it will push the connecting rod to move after moving to the lever detector, causing the lever switch to sense. The lever switch is associated with the emergency stop of the conveyor belt, and the conveyor belt will stop suddenly after the lever switch is actuated.

[0070] The toggle detector on the inclined panel has the same principle as the toggle detector on the bottom of the detection box. The push rod of the toggle detector on the inclined panel is always in contact with the inclined panel. When the connecting rod is pushed by the tip, the push rod will slide. After the push rod moves into place, it indicates that the arm of the toggle switch has also moved into place. At this time, the toggle switch is sensed. When the push rod slides, it will drive the rotating rod to rotate. The rotation of the rotating rod will drive the insertion rod to slide. The upper end of the insertion rod is inserted in the U-shaped plate. When the push rod moves into place, the upper end of the insertion rod is detached from the U-shaped plate. At this time, the rotation restriction between the connecting rod and the toggle rod is released.

[0071] It should be noted that the above invention content and specific implementation methods are intended to demonstrate the practical application of the technical solution provided by the present invention and should not be interpreted as limiting the scope of protection of the present invention. Those skilled in the art can make various modifications, equivalent substitutions or improvements within the spirit and principles of the present invention. The scope of protection of the present invention shall be subject to the attached claims.

Claims

1. A belt conveyor with longitudinal tear detection, comprising: A detection box (1) and a frame plate (2), characterized in that two lever detectors (4) for detecting longitudinal tearing of the bottom surface of a conveyor belt are fixed in the detection box (1), the two lever detectors (4) are symmetrically arranged, and the connecting rods (4-10) of the two lever detectors (4) are connected by a touch rod (17); The bottom of the detection box (1) is hinged to two symmetrically arranged inclined panels (5), and each of the inclined panels (5) is fixed with a lever detector (4) for detecting longitudinal tearing of the inclined surface of the conveyor belt; Two lever detectors (4) for detecting longitudinal tearing of the bottom surface of the conveyor belt and two lever detectors (4) for detecting longitudinal tearing of the inclined surface of the conveyor belt are arranged in a staggered manner; A slope adjuster (9) for adjusting the slope of the inclined panel (5) is fixed at each inclined panel (5) at the bottom of the detection box (1); Infrared radiation switches (15) for detecting leakage are fixed on the front and rear sides of the detection box (1); The lever detector (4) comprises a toggle switch (4-3), and the support arms (4-4) of the toggle switch (4-3) are connected together via a connecting rod (4-10); The connecting rod device (4-10) comprises a connecting rod (4-1), the support arm (4-4) of each toggle switch (4-3) is connected to an arm sleeve (4-6) by means of bolts, a lever (4-5) is fixed to the arm sleeve (4-6), and the lever (4-5) is connected to a joint sleeve (4-7) at the end of the connecting rod (4-1) by means of a hinge shaft (4-8); The shifting rod (4-5) is fixed with an overload unloading assembly (4-2) for unloading the rotational force of the connecting rod device (4-10); A buffer spring (4-9) is connected between the top of the excessive unloading component (4-2) and the joint sleeve (4-7); The slope adjuster (9) comprises a tooth arc (9-1) fixed to the back of the inclined panel (5); a support shaft (9-6) is connected to the detection box (1) via a bearing; two gears (9-2) and a worm wheel (9-7) are sleeved on the support shaft (9-6); each gear (9-2) is meshed with a tooth arc (9-1) at a corresponding position; the detection box (1) is connected to the worm (9-4) via a bearing; and the worm (9-4) is meshed with the worm wheel (9-7); The excessive unloading assembly comprises an I-shaped frame (4-2-10) and a rotating rod (4-2-1), the center of the rotating rod (4-2-1) is connected to the I-shaped frame (4-2-10) via a central axis (4-2-6), both sides of the rotating rod (4-2-1) are respectively sleeved with sliding sleeves (4-2-2), one end of the I-shaped frame (4-2-10) is slidably connected to the insertion rod (4-2-3), and the other end is slidably connected to the support rod (4-2-8), each of the sliding sleeves (4-2-2) is fixed with a side shaft (4-2-9), one of the side shafts (4-2-9) passes through the round hole of the insertion rod (4-2-3) and is threadedly connected to a nut, and the other side shaft (4-2-9) passes through the round hole on the support rod (4-2-8) and is threadedly connected to a nut, and a support spring (4-2-5) is sleeved on the support rod (4-2-8); The upper end of the insertion rod (4-2-3) is inserted into the U-shaped plate (4-2-4) fixed on the side of the joint sleeve (4-7); A height adjuster (10) for adjusting the height of the detection box (1) is fixed to the bottom of the detection box (1); The height adjuster (10) comprises a screw rod (10-5), a screw sleeve (10-1) and a shaft sleeve (10-3); the screw rod (10-5) is welded to the frame plate (2); the shaft sleeve (10-3) is welded to the bottom of the detection box (1); four sliding rods (10-4) are fixed to the bottom of the detection box (1); the sliding rods (10-4) pass through the frame plate (2); the shaft sleeve (10-3) and the screw sleeve (10-1) are connected via a bearing; the screw sleeve (10-1) and the screw rod (10-5) are threadedly connected; and a fixing nut (10-2) is welded to the bottom of the screw sleeve (10-1).

2. A belt conveyor with longitudinal tear detection according to claim 1, characterized in that: The bottom surface of the detection box (1) is a stepped bottom surface (6) on which are provided two material collecting troughs (7), pushers (16) being fixed to the material collecting troughs (7), and the bottoms of the two material collecting troughs (7) are respectively provided with discharge ports (14).

3. A belt conveyor with longitudinal tear detection according to claim 2, characterized in that: The pusher (16) comprises a driving reduction motor (16-3) and two augers (16-1), each of the augers (16-1) being located in the collecting trough (7), the two ends of the augers (16-1) being connected to the detection box (1) via bearings, a passive gear (16-4) being fixed to the end of the augers (16-1), the output shaft of the driving reduction motor (16-3) being fixed to the driving gear (16-2), and the driving gear (16-2) being meshed with the passive gear (16-4).

4. A belt conveyor with longitudinal tear detection according to claim 3, characterized in that: The bottom of the stepped bottom surface (6) of the detection box (1) has a socket (3) for inserting the screw rod (10-5).

5. A belt conveyor with longitudinal tear detection according to claim 4, characterized in that: A handle (9-3) is fixed to the end of the worm (9-4).

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