A belt conveyor protection device

Abstract

The invention discloses a belt conveyor protection device, and specifically relates to the technical field of conveyors. The invention comprises a frame, wherein the frame is composed of four sliding frames fixedly connected to each other, a conveyor belt is arranged between the frames, and a catching mechanism is arranged on the frame, wherein the catching mechanism is used for braking when the conveyor belt is broken; an upper sensing mechanism and a lower sensing mechanism are respectively arranged on the catching mechanism, wherein the upper sensing mechanism and the lower sensing mechanism are used for detecting whether the conveyor belt is broken; the catching mechanism comprises a connecting rod, wherein two connecting rods are arranged as a group, and a synchronization component is arranged on each group of the connecting rods, wherein the synchronization component is used for synchronously driving the two connecting rods to rotate, and a transmission rod and a synchronization rod are arranged between the two groups of the connecting rods on the same side, and the cooperation of the catching mechanism, the upper sensing mechanism and the lower sensing mechanism can catch the broken conveyor belt timely and accurately.

Description

Technical Field

[0001] The invention relates to the technical field of conveyors, in particular to a belt conveyor protection device. Background Art

[0002] Belt conveyor is a very common continuous transportation equipment in production, and is widely used in coal, metallurgy, building materials and other departments. It has the advantages of strong transportation capacity, small working resistance, low power consumption, long transportation distance and long service life.

[0003] Belt conveyor belt break protection is an important part to ensure the safe operation of the conveyor and avoid safety accidents when the conveyor belt breaks. The conveyor belt break protection device usually consists of a sensing part and a capture part. The existing belt break protection device sensing part usually only has a pressure sensor, which senses the pressure change of the conveyor belt through the pressure sensor. The pressure sensor is placed under the conveyor belt. When the belt breaks, the conveyor belt presses down the pressure sensor, and the pressure sensor transmits the signal to the capture part, which brakes the broken conveyor belt.

[0004] The pressure sensor in the existing belt break protection device is easy to touch the pressure sensor when the conveyor belt is bumped or vibrated, so that the value of the pressure sensor changes, and then triggers the capture part to erroneously operate. Or there are not many goods on the conveyor belt, and the pressure generated does not reach the value set on the pressure sensor, so the capture part will not be triggered. The existing belt break protection device usually only captures one position of the conveyor belt and only has one pressure sensor. When the position where the belt breaks is far away from the pressure sensor, the conveyor belt cannot be captured in time. Summary of the invention

[0005] The object of the present invention is to provide a belt conveyor protection device to solve the problem of easy misoperation mentioned in the above background technology.

[0006] The present invention can be implemented through the following technical scheme: it includes a frame, the frame is composed of four sliding frames fixedly connected to each other, a conveyor belt is arranged between the frames, and a capture mechanism is arranged on the frame, and the capture mechanism is used to brake when the conveyor belt is broken; the capture mechanism is respectively provided with an upper sensing mechanism and a lower sensing mechanism, and the upper sensing mechanism and the lower sensing mechanism are used to detect whether the conveyor belt is broken; the capture mechanism includes connecting rods, two of the connecting rods are set as a group, and each group of the connecting rods is provided with a synchronization component, and the synchronization component is used to synchronously drive the two connecting rods to rotate, and a transmission rod and a synchronization rod are arranged between the two groups of connecting rods on the same side, and the transmission rod and the synchronization rod are used to make the two groups of connecting rods move synchronously, and an electric push rod is arranged above the frame, and the electric push rod is used to simultaneously drive multiple groups of connecting rods to move synchronously.

[0007] A further technical improvement of the present invention is that the synchronization component is composed of two rotating rods connected to each other in rotation, two support rods are fixedly connected between the front and rear frames, a positioning plate is fixedly connected between the two support rods, and the centers of the two rotating rods are connected to the support rods in a common rotational manner.

[0008] A further technical improvement of the present invention is that a fixed frame is provided on the top of the frame, the electric push rod is installed on the fixed frame, the telescopic end of the electric push rod is rotatably connected to two driving rods, and the two driving rods are respectively rotatably connected to one group of connecting rods on both sides.

[0009] A further technical improvement of the present invention is that: the transmission rod is rotatably connected to the positioning plate, the synchronization rod is rotatably connected to both ends of the transmission rod, one end of the synchronization rod away from the transmission rod is rotatably connected to one of the two groups of connecting rods on the same side, a strip groove is provided on the rotating rod, and the connecting rod is rotatably connected in the strip groove.

[0010] A further technical improvement of the present invention is that: the connecting rod is provided with linearly connected protrusions, and the protrusions are used to contact the conveyor belt.

[0011] A further technical improvement of the present invention is that the upper sensing mechanism is arranged on the connecting rod, and the upper sensing mechanism includes a fixed frame, the fixed frame is fixedly connected to the connecting rod, a sliding rod is slidably connected inside the fixed frame, the sliding rod extends to the outside of the fixed frame and is installed with a first pressure sensor, and the first pressure sensor is in contact with the upper surface of the conveyor belt.

[0012] A further technical improvement of the present invention is that a first switch is arranged in the fixing frame, the top of the slide bar contacts the first switch, and a first spring is also arranged in the fixing frame, and the first spring is connected to the slide bar.

[0013] A further technical improvement of the present invention is that the lower sensing mechanism is arranged on a connecting rod below the upper sensing mechanism, and the lower sensing mechanism includes a fixed seat, which is fixedly connected to the connecting rod, and the free end of the fixed seat is rotatably connected to a rocker arm, and a second pressure sensor is arranged at the end of the rocker arm, and the second pressure sensor is in contact with the lower surface of the conveyor belt.

[0014] A further technical improvement of the present invention is that a second spring is arranged between the fixed seat and the rocker arm, a fixed plate is fixedly connected to the fixed seat, an arc groove is opened on the fixed plate, the rocker arm is rotatably connected in the arc groove, a second switch is installed on the fixed plate, and the second switch is in contact with the rocker arm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The cooperation of the upper sensing mechanism and the lower sensing mechanism can timely sense the break of the conveyor belt to prevent the broken conveyor belt from continuing to move and causing accidents. The upper sensing mechanism and the lower sensing mechanism respectively sense the conveyor belt from the upper surface and the lower surface of the conveyor belt. At the same time, the pressure sensor and the switch can control the electric push rod to capture the conveyor belt to prevent the first pressure sensor in the upper sensing mechanism from changing its value when the conveyor belt shakes, thereby mistakenly starting the electric push rod. In addition, when the conveyor belt breaks, there is not much cargo on the conveyor belt, and the pressure generated is not enough to make the second pressure sensor start the electric push rod. The second switch can also start the electric push rod.

[0017] 2. The capture mechanism can also adjust the relative distance between the upper sensing mechanism and the lower sensing mechanism, so as to target conveyor belts of different thicknesses. In addition, the capture mechanism is also used to adjust the pressure values ​​between the first pressure sensor, the second pressure sensor and the conveyor belt, so as to adjust the appropriate pressure value according to actual needs, thereby ensuring that the difference between the values ​​for starting the electric push rod is maintained within a reasonable range. If the difference is too large, it is difficult to start the electric push rod, which makes it impossible to capture the broken conveyor belt. If the difference is too small, it is easy to start the electric push rod by mistake. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0020] Figure 2 It is another perspective schematic diagram of the present invention;

[0021] Figure 3 It is a schematic diagram of the capture mechanism of the present invention;

[0022] Figure 4 It is a partial structural schematic diagram of the capture mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the sensing mechanism of the present invention;

[0024] Figure 6 For the present invention Figure 5 A is an enlarged schematic diagram;

[0025] Figure 7 It is a schematic diagram of the structure of the upper induction mechanism of the present invention.

[0026] In the figure: 1. frame; 11. support rod; 12. positioning plate; 2. conveyor belt; 3. capture mechanism; 31. connecting rod; 32. synchronization assembly; 33. bump; 34. transmission rod; 35. synchronization rod; 36. strip groove; 37. electric push rod; 38. driving rod; 4. upper sensing mechanism; 41. fixed frame; 42. sliding rod; 43. first pressure sensor; 44. first spring; 45. first switch; 5. lower sensing mechanism; 51. fixed seat; 52. rocker arm; 53. second pressure sensor; 54. second spring; 55. fixed plate; 56. arc groove; 57. second switch; 6. fixed frame. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0028] See also Figure 1-3 As shown, the present invention provides a belt conveyor protection device, including a frame 1, the frame 1 is composed of four sliding frames fixedly connected to each other, a conveyor belt 2 is arranged between the frames 1, and a capture mechanism 3 is arranged on the frame 1, and the capture mechanism 3 is used to brake when the conveyor belt 2 is broken; an upper sensing mechanism 4 and a lower sensing mechanism 5 are respectively arranged on the capture mechanism 3, and the upper sensing mechanism 4 and the lower sensing mechanism 5 are used to detect whether the conveyor belt 2 is broken; the capture mechanism 3 includes a connecting rod 31, two connecting rods 31 are arranged as a group, and a synchronization component 32 is arranged on each group of connecting rods 31, and the synchronization component 32 is used to synchronously drive the two connecting rods 31 to rotate, and a transmission rod 34 and a synchronization rod 35 are arranged between the two groups of connecting rods 31 on the same side, and the transmission rod 34 and the synchronization rod 35 are used to make the two groups of connecting rods 31 move synchronously, and an electric push rod 37 is arranged above the frame 1, and the electric push rod 37 is used to simultaneously drive multiple groups of connecting rods 31 to move synchronously.

[0029] See also Figure 1 As shown, the synchronization component 32 is composed of two rotating rods connected to each other, two support rods 11 are fixedly connected between the front and rear frames 1, a positioning plate 12 is fixedly connected between the two support rods 11, and the centers of the two rotating rods are connected to the support rods 11 for rotation.

[0030] The synchronous assembly 32 is configured to achieve synchronous movement of the same group of connecting rods 31 through two rotating rods that rotate relative to each other, thereby achieving capture of the conveyor belt 2 .

[0031] See also Figure 1As shown, a fixed frame 6 is provided on the top of the frame 1, and an electric push rod 37 is installed on the fixed frame 6. The telescopic end of the electric push rod 37 is rotatably connected to two driving rods 38, and the two driving rods 38 are rotatably connected to one group of connecting rods 31 on both sides respectively.

[0032] See also Figure 3 As shown, the transmission rod 34 is rotatably connected to the positioning plate 12, and the synchronization rod 35 is rotatably connected to both ends of the transmission rod 34. One end of the synchronization rod 35 away from the transmission rod 34 is rotatably connected to one of the two groups of connecting rods 31 on the same side. A strip groove 36 is provided on the rotating rod, and the connecting rod 31 is rotatably connected in the strip groove 36. The strip groove 36 is provided to provide moving space for the connecting rod 31 when it moves.

[0033] The cooperation between the transmission rod 34 and the synchronization rod 35 can drive the upper and lower groups of connecting rods 31 on the same side to achieve synchronous movement. The transmission rods 34 at both ends of the synchronization rod 35 drive the upper and lower groups of connecting rods 31 to move synchronously.

[0034] See also Figure 4 As shown, the connecting rod 31 is provided with linearly connected protrusions 33 , and the protrusions 33 are used to contact the conveyor belt 2 .

[0035] The action process of the set capture mechanism 3 is to first start the electric push rod 37, which further drives the driving rod 38 rotatably connected thereto to rotate, and the driving rod 38 further drives the connecting rod 31 rotatably connected thereto to move, and the connecting rod 31 drives another connecting rod 31 in the same group to move through the synchronization component 32, and then drives the lower group of connecting rods 31 to move through the action of the transmission rod 34 and the synchronization rod 35, so that all the connecting rods 31 move, and the protrusions 33 on the connecting rods 31 can capture the conveyor belt 2, and the multiple protrusions 33 set can capture the conveyor belt 2 at multiple points.

[0036] See also Figure 5 , 7 As shown, the upper sensing mechanism 4 is arranged on the connecting rod 31, and the upper sensing mechanism 4 includes a fixed frame 41, and the fixed frame 41 is fixedly connected to the connecting rod 31. A sliding rod 42 is slidably connected inside the fixed frame 41, and the sliding rod 42 extends to the outside of the fixed frame 41 and is installed with a first pressure sensor 43. The first pressure sensor 43 is in contact with the upper surface of the conveyor belt 2, wherein the first pressure sensor 43 and the electric push rod 37 communicate through PLC, and the PLC communication is connected to the electric push rod 37.

[0037] See also Figure 5 , 7As shown, a first switch 45 is provided in the fixing frame 41 , the top of the slide bar 42 contacts the first switch 45 , the first switch 45 and the electric push rod 37 are electrically connected, and a first spring 44 is also provided in the fixing frame 41 , and the first spring 44 is connected to the slide bar 42 .

[0038] When the conveyor belt 2 breaks, the upper surface of the conveyor belt 2 at the break position no longer squeezes the first pressure sensor 43, and the value of the first pressure sensor 43 changes. When it is less than a predetermined value, a signal is sent to the electric push rod 37 through the PLC, and the electric push rod 37 eventually drives the connecting rod 31 to move, and the protrusion 33 on the connecting rod 31 eventually captures the conveyor belt 2. At the same time, the slide bar 42 moves synchronously with the movement of the first pressure sensor 43. As the slide bar 42 moves, the slide bar 42 no longer squeezes the first switch 45. At this time, the first switch 45 is disconnected. Since the first switch 45 is electrically connected to the electric push rod 37, the electric push rod 37 is started, driving the capture mechanism 3 to capture the conveyor belt 2. The first spring 44 provided always provides elastic force to the slide bar 42 and the first pressure sensor 43 to ensure that the first pressure sensor 43 and the conveyor belt 2 are always squeezed.

[0039] The first switch 45 and the first pressure sensor 43 can both control the start of the electric push rod 37 to capture the conveyor belt 2. The purpose of setting the first switch 45 and the first pressure sensor 43 is to prevent the conveyor belt 2 from shaking, thereby changing the value of the first pressure sensor 43, thereby erroneously starting the capture mechanism 3, and further affecting normal transportation.

[0040] See also Figure 5 , 6 As shown, the lower sensing mechanism 5 is arranged on a connecting rod 31 below the upper sensing mechanism 4, and the lower sensing mechanism 5 includes a fixed seat 51, and the fixed seat 51 is fixedly connected to the connecting rod 31. The free end of the fixed seat 51 is rotatably connected to a rocker arm 52, and a second pressure sensor 53 is arranged at the end of the rocker arm 52. The second pressure sensor 53 is in contact with the lower surface of the conveyor belt 2, and the second pressure sensor 53 and the electric push rod 37 communicate through PLC.

[0041] See also Figure 5 , 6 As shown, a second spring 54 is provided between the fixed seat 51 and the rocker arm 52, a fixed plate 55 is fixedly connected to the fixed seat 51, an arc groove 56 is provided on the fixed plate 55, the rocker arm 52 is rotatably connected in the arc groove 56, a second switch 57 is installed on the fixed plate 55, the second switch 57 is in contact with the rocker arm 52, and the second switch 57 is electrically connected to the electric push rod 37.

[0042] The arranged capture mechanism 3 can also adjust the relative distance between the upper sensing mechanism 4 and the lower sensing mechanism 5, so as to target conveyor belts 2 of different thicknesses. In addition, the capture mechanism 3 is also used to adjust the pressure values ​​between the first pressure sensor 43, the second pressure sensor 53 and the conveyor belt 2, so as to adjust the appropriate pressure value according to actual needs, thereby ensuring that the difference between the values ​​for finally starting the electric push rod 37 is maintained within a reasonable range. If the difference is too large, it is difficult to start the electric push rod 37, thereby resulting in the inability to capture the broken conveyor belt 2. If the difference is too small, the electric push rod 37 is easily started by mistake.

[0043] When the conveyor belt 2 breaks, the broken part of the conveyor belt 2 loses support and moves downward, thereby squeezing the second pressure sensor 53. The value of the second pressure sensor 53 changes, and the signal is transmitted to the PLC. The electric push rod 37 is started by the PLC. The electric push rod 37 eventually drives the connecting rod 31 to capture the conveyor belt 2. At the same time, since the second pressure sensor 53 is squeezed, the swing rod 52 is driven to rotate. As the swing rod 52 rotates, the swing rod 52 no longer squeezes the second switch 57, so the second switch 57 is disconnected. At this time, the electrical signal is transmitted to the electric push rod 37, and the electric push rod 37 eventually drives the connecting rod 31 to capture the conveyor belt 2. The purpose of setting the second switch 57 and the second pressure sensor 53 at the same time is that when the conveyor belt 2 breaks, when the pressure squeezing the second pressure sensor 53 is not enough to reach the value for starting the electric push rod 37, the electric push rod 37 can be started by the second switch 57.

[0044] When the present invention is in use, when the conveyor belt 2 breaks, the upper sensing mechanism 4 and the lower sensing mechanism 5 can sense from the upper surface and the lower surface of the conveyor belt 2 at the same time, and the upper sensing mechanism 4 and the lower sensing mechanism 5 are provided with double sensing to ensure rapid and accurate sensing. The capturing mechanism 3 is used to receive the sensing signals of the upper sensing mechanism 4 and the lower sensing mechanism 5, so as to capture the conveyor belt 2.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A belt conveyor protection device, comprising a frame (1), characterized in that: The frame (1) is composed of four sliding frames fixedly connected to each other, a conveyor belt (2) is arranged between the frames (1), and a catching mechanism (3) is arranged on the frame (1), and the catching mechanism (3) is used to brake when the conveyor belt (2) breaks; The capture mechanism (3) is provided with an upper sensing mechanism (4) and a lower sensing mechanism (5), respectively, and the upper sensing mechanism (4) and the lower sensing mechanism (5) are used to detect whether the conveyor belt (2) is broken; The capture mechanism (3) comprises a connecting rod (31), wherein two connecting rods (31) are arranged as a group, and a synchronization component (32) is arranged on each group of the connecting rods (31), and the synchronization component (32) is used to synchronously drive the two connecting rods (31) to rotate, and a transmission rod (34) and a synchronization rod (35) are arranged between the two groups of the connecting rods (31) on the same side, and the transmission rod (34) and the synchronization rod (35) are used to make the two groups of connecting rods (31) move synchronously, and an electric push rod (37) is arranged above the frame (1), and the electric push rod (37) is used to simultaneously drive multiple groups of connecting rods (31) to move synchronously; The upper sensing mechanism (4) is arranged on the connecting rod (31), and the upper sensing mechanism (4) comprises a fixing frame (41), the fixing frame (41) is fixedly connected to the connecting rod (31), a sliding rod (42) is slidably connected inside the fixing frame (41), the sliding rod (42) extends to the outside of the fixing frame (41) and is installed with a first pressure sensor (43), and the first pressure sensor (43) is in contact with the upper surface of the conveyor belt (2); A first switch (45) is arranged in the fixing frame (41), and the top of the sliding rod (42) contacts the first switch (45). A first spring (44) is also arranged in the fixing frame (41), and the first spring (44) is connected to the sliding rod (42); The lower sensing mechanism (5) is arranged on a connecting rod (31) below the upper sensing mechanism (4), and the lower sensing mechanism (5) comprises a fixing seat (51), the fixing seat (51) is fixedly connected to the connecting rod (31), the free end of the fixing seat (51) is rotatably connected to a swing rod (52), the end of the swing rod (52) is provided with a second pressure sensor (53), and the second pressure sensor (53) is in contact with the lower surface of the conveyor belt (2); A second spring (54) is arranged between the fixed seat (51) and the swing rod (52); a fixed plate (55) is fixedly connected to the fixed seat (51); an arc groove (56) is provided on the fixed plate (55); the swing rod (52) is rotatably connected in the arc groove (56); a second switch (57) is installed on the fixed plate (55); and the second switch (57) is in contact with the swing rod (52).

2. A belt conveyor protection device according to claim 1, characterized in that: The synchronization component (32) is composed of two rotating rods that are rotatably connected to each other, two support rods (11) are fixedly connected between the front and rear frames (1), a positioning plate (12) is fixedly connected between the two support rods (11), and the centers of the two rotating rods are rotatably connected to the support rods (11) together.

3. A belt conveyor protection device according to claim 1, characterized in that: A fixed frame (6) is provided on the top of the frame (1), and the electric push rod (37) is installed on the fixed frame (6). The telescopic end of the electric push rod (37) is rotatably connected to two driving rods (38), and the two driving rods (38) are respectively rotatably connected to one group of connecting rods (31) on both sides.

4. A belt conveyor protection device according to claim 2, characterized in that: The transmission rod (34) is rotatably connected to the positioning plate (12), the synchronization rod (35) is rotatably connected to both ends of the transmission rod (34), one end of the synchronization rod (35) away from the transmission rod (34) is rotatably connected to one of the two groups of connecting rods (31) on the same side, a strip groove (36) is provided on the rotation rod, and the connecting rod (31) is rotatably connected in the strip groove (36).

5. A belt conveyor protection device according to claim 1, characterized in that: The connecting rod (31) is provided with a linearly connected protrusion (33), and the protrusion (33) is used to contact the conveyor belt (2).

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