Novel belt conveyor protection device

Abstract

The utility model discloses a novel belt conveyor protection device, which belongs to the field of belt conveyors and is characterized in that a monitoring device is arranged and assembled on a belt adjusting device of a conveying belt, so that the monitoring device and the belt adjusting device move synchronously, belt adjusting is not affected, and a travel switch is propped against the conveying belt for monitoring; meanwhile, the travel switch is connected with an alarm and serves as an emergency stop switch of the belt conveyor, so that alarm and emergency stop can be triggered after certain belt expansion occurs on the belt conveyor, timely cleaning is facilitated, and the belt conveyor is prevented from being damaged by belt expansion; when alarm and sudden stop are triggered, the monitoring assembly rod can also abut against the compression spring to move, the situation that the monitoring device is damaged by the expansion belt is prevented, and meanwhile, the assembly extension rod of the travel switch adopts the assembly mode that the half-wrapping assembly block is combined with the screw and the cover plate to abut against the assembly extension rod. The assembly extension rod can be quickly increased or decreased, and the monitoring position can be quickly adjusted by rotating the screw rod, so that the use is convenient.

Description

Technical Field

[0001] The utility model belongs to the field of belt conveyors, and particularly relates to a novel belt conveyor protection device. Background Art

[0002] Belt conveyor, also known as belt conveyor, is widely used in various industries such as mining, machinery, tobacco, post and telecommunications, printing, food, etc. Belt conveyor has strong conveying capacity, long conveying distance, simple structure and easy maintenance, and can conveniently implement programmed control and automatic operation. However, when the prior art is used in mines, when the material falls back onto the return belt, it is easy to be brought to the tail of the belt machine through the return belt and rolled up between the tail roller and the belt of the belt machine. For the tightened belt machine, the rolled-in material will cause the conveyor belt to be stretched to form a swollen belt, thereby causing great tension in the conveyor belt, which is easy to cause damage to the weak points of the belt machine and cause danger. At the same time, repair after damage will increase the cost of use and cause long-term downtime, causing inconvenience. When the prior art is used, ordinary top pressure monitoring equipment is easy to cause damage to the monitoring equipment due to the fixed assembly when encountering a swollen belt situation due to the excessive swollen belt amplitude, causing inconvenience. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In order to overcome the shortcomings of the existing technology, a new type of belt conveyor protection device is proposed to solve the problem that when the existing technology is used in mines, when the material falls back on the return belt, it is easy to be brought to the tail of the belt conveyor through the return belt and rolled up between the tail roller and the belt of the belt conveyor. For the tightened belt conveyor, the rolled-in material will cause the conveyor belt to be stretched to form an expanded belt, thereby causing a large tension in the conveyor belt, which is easy to cause damage to the weak part of the belt conveyor and cause danger. At the same time, repair after damage will increase the use cost and cause long-term downtime, causing inconvenience;

[0005] Secondly, in order to solve the problem that when using the existing technology, ordinary top pressure monitoring equipment is easily damaged due to the fixed assembly when encountering a belt expansion situation due to excessive belt expansion, causing inconvenience.

[0006] (II) Technical solution

[0007] The utility model is realized by the following technical scheme: the utility model proposes a novel belt conveyor protection device, the structure of which includes a frame, a bearing seat, a monitoring device and a belt conveyor, the frame is equipped with a belt conveyor through the bearing seat, and the monitoring device is used for monitoring the belt conveyor being stretched after winding;

[0008] The frame is also provided with a belt adjusting device, which is used to adjust the tightness of the belt conveyor;

[0009] The belt adjusting device is composed of a first screw, a first handle, a first limiting groove, a sliding seat, a limiting plate, a movable connecting rod, a nut and a connecting groove. A first limiting groove is provided inside one end of the frame, and both upper and lower ends of the first limiting groove penetrate the frame through the connecting groove. The limiting plate is inlaid and assembled inside the frame, and the limiting plate is fixed with a first screw at an end away from the middle of the frame. The first screw passes through the first limiting groove at an end away from the limiting plate and then passes through the frame and is fixedly connected to the first handle. The limiting plate is used for limiting the displacement of the first screw. The nut is covered on the first screw and is threadedly connected to the first screw. The nut is provided in the first limiting groove. The sliding seat is covered and assembled on the frame. Both upper and lower ends of the nut pass through the connecting groove and are fixedly connected to the sliding seat through the moving connecting rod. A bearing seat at one end of the belt conveyor is fixed on the sliding seat, and a monitoring device is fixed on the sliding seat away from the center side of the frame.

[0010] The monitoring device comprises a travel switch, a fixed connecting plate, a top pressure assembly plate, a compression spring, a monitoring assembly rod, an assembly extension rod, a second limiting groove and a limiting block, one end of the fixed connecting plate is fixedly connected to the sliding seat, the fixed connecting plate is fixed with a top pressure assembly plate on the side away from the sliding seat and the frame, a second limiting groove is penetrated by the fixed connecting plate, the second limiting groove is a convex groove, the larger end of the second limiting groove is located on the side of the fixed connecting plate adjacent to the frame, the limiting block is a convex block, the limiting block is assembled in the second limiting groove, the limiting block is locked with the monitoring assembly rod, the monitoring assembly rod is assembled on the side of the fixed connecting plate away from the frame, a compression spring is assembled between the side of the monitoring assembly rod away from the sliding seat and the top pressure assembly plate, the side of the monitoring assembly rod adjacent to the belt conveyor is assembled with an assembly extension rod, the side of the assembly extension rod adjacent to the belt conveyor is assembled with a travel switch, the detection switch of the travel switch is attached to the belt conveyor, and more than one assembly extension rod is provided, and more than one assembly extension rod is equipped with a travel switch.

[0011] Furthermore, the limiting plate is a non-circular plate, and the size of the connecting surface between the limiting plate and the first limiting groove is larger than the size of the connecting portion between the first limiting groove and the limiting plate.

[0012] Furthermore, the diameter of the first screw is smaller than the minimum inner diameter of the first limiting groove.

[0013] Furthermore, the monitoring assembly rod is composed of a cover plate, a locking knob, a second handle, a third limiting groove, a top plate, an assembly block, a second screw, a main rod body and an adjusting connecting rod. The bottom of the main rod body is locked with the limiting block, a compression spring is installed between the main rod body and the top pressure assembly plate, a third limiting groove is provided on the side of the main rod body away from the fixed connecting plate and the top pressure assembly plate, the top of the main rod body is locked with a cover plate through a locking knob, the top of the third limiting groove is connected to the cover plate, the bottom of the cover plate is fixed with a top plate away from the top pressure assembly plate, and the top plate is provided The third limiting groove is equipped with a second screw rod, and both ends of the second screw rod are fixed with adjusting links, and the adjusting link rod passes through the main rod body and is fixedly connected to the second handle on the side away from the second screw rod. The assembly block is assembled on the second screw rod, and the assembly block is threadedly connected to the second screw rod. The assembly block is covered on the upper half of the second screw rod, and the bottom of the assembly block is connected to the bottom of the third limiting groove away from the top pressure assembly plate side, and the top of the assembly block is connected to the bottom of the top plate, and the assembly extension rod is fixed to the side of the assembly block away from the top pressure assembly plate.

[0014] Furthermore, the assembly block is limited by the top plate in the third limiting groove and cannot rotate.

[0015] Furthermore, the second screw rod is composed of two identical threaded rod bodies.

[0016] Furthermore, the two identical threaded rods of the second screw rod may be fixedly connected.

[0017] Furthermore, the two identical threaded rods of the second screw rod can be connected by a connecting protrusion, which is a truncated cone-shaped block with a convex cross-section. The connecting protrusion is embedded in one threaded rod, and the small end face of the connecting protrusion passes through one end of one threaded rod and is fixedly connected to one end of the other threaded rod.

[0018] Furthermore, the locking knob is composed of a limit plate, a locking screw, a third handle and a connecting rod. The limit plate is a circular disc body, and a locking screw is fixed cocentrically at one end of the limit plate. The limit plate is fixedly connected to the third handle through a connecting rod away from the end of the locking screw, and the locking screw passes through the cover plate and is locked to the main rod body.

[0019] Furthermore, the travel switch is connected to an alarm or serves as an emergency stop switch for the belt conveyor.

[0020] Furthermore, when there are two or more travel switches, the two or more travel switches are assembled in parallel, which can better reduce the misjudgment caused by the pressure on the travel switch when the material is transported on the conveyor belt.

[0021] Furthermore, the pressure of the compression spring is greater than the pressure required when the travel switch is triggered, so as to ensure that the monitoring assembly rod will not be pressed to slide before the travel switch is triggered.

[0022] (III) Beneficial effects

[0023] One of the above technical solutions has the following advantages or beneficial effects:

[0024] 1) To solve the problem that when the prior art is used in mines, when the material falls back onto the return belt, it is easy to be brought to the tail of the belt conveyor through the return belt and rolled up between the tail roller and the belt of the belt conveyor. For the tightened belt conveyor, the rolled-in material will cause the conveyor belt to be stretched to form a swollen belt, thereby causing a large tension in the conveyor belt, which is easy to cause damage to the weak points of the belt conveyor and cause danger. At the same time, repair after damage will increase the cost of use and cause long-term downtime, causing inconvenience. A monitoring device is provided. The device is assembled on the belt adjusting device of the conveyor belt so that it moves synchronously with the belt adjusting device without affecting the belt adjustment. The monitoring device uses a travel switch to rest on the conveyor belt. At the same time, the travel switch is connected to the alarm and the emergency stop switch of the belt conveyor, so that the belt conveyor will trigger an alarm and emergency stop after a certain belt expansion phenomenon occurs, which is convenient for timely cleaning of the material rolled up between the belt and the roller to prevent excessive belt expansion from damaging the belt conveyor.

[0025] 2) To solve the problem that when using the prior art, ordinary top pressure monitoring equipment is easily damaged due to excessive belt expansion due to fixed assembly reasons when monitoring, causing inconvenience, the monitoring assembly rod of the assembled travel switch is set to be able to slide on the fixed connecting plate, and the monitoring assembly rod is pressed close to the conveyor belt by a compression spring, so that when the travel switch encounters a belt expansion beyond the monitoring range, the monitoring assembly rod can be pressed and moved while triggering the alarm and emergency stop, so as to prevent the expansion of the belt from damaging the monitoring device. At the same time, the assembly extension rod for assembling the travel switch is assembled on the monitoring assembly rod, and adopts a semi-covered assembly block combined with a screw and a cover plate to press, so that the assembly extension rod can be quickly increased or decreased by opening the cover plate, and the monitoring position can be quickly adjusted by rotating the screw, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0027] Figure 1 This is a structural schematic diagram of a new belt conveyor protection device of the utility model;

[0028] Figure 2 For this utility model Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0029] Figure 3 It is a cross-sectional structural diagram of the frame 1 where the belt adjusting device 5 of the utility model is assembled;

[0030] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure of B;

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the main rod body 3e8 of the utility model;

[0032] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure of C in the middle;

[0033] In the figure: frame 1, bearing seat 2, monitoring device 3 and belt conveyor 4, belt adjusting device 5, first screw rod 5a, first handle 5b, first limit groove 5c, sliding seat 5d, limit plate 5e, movable connecting rod 5f, nut 5g, connecting groove 5h, travel switch 3a, fixed connecting plate 3b, top pressure assembly plate 3c, compression spring 3d, monitoring assembly rod 3e, assembly extension rod - 3f, second limiting groove - 3g, limiting block - 3h, cover plate - 3e1, locking knob - 3e2, second handle - 3e3, third limiting groove - 3e4, top plate - 3e5, assembly block - 3e6, second screw - 3e7, main rod body - 3e8, adjusting connecting rod - 3e9, limiting plate - 3e2a, locking screw - 3e2b, third handle - 3e2c, connecting rod - 3e2d, connecting protrusion - 3e7a. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0035] The utility model provides a novel belt conveyor protection device: its structure includes a frame 1, a bearing seat 2, a monitoring device 3 and a belt conveyor 4, the frame 1 is equipped with the belt conveyor 4 through the bearing seat 2, and the monitoring device 3 is used for monitoring the belt conveyor 4 being stretched after winding;

[0036] The frame 1 is also provided with a belt adjusting device 5, which is used to adjust the tightness of the belt conveyor 4;

[0037] The tape adjusting device 5 is composed of a first screw rod 5a, a first handle 5b, a first limiting groove 5c, a sliding seat 5d, a limiting plate 5e, a moving connecting rod 5f, a nut 5g and a communication groove 5h. Inside one end of the frame 1, there is a first limiting groove 5c. Both the upper and lower ends of the first limiting groove 5c penetrate through the frame 1 via the communication groove 5h. The limiting plate 5e is inlaid and assembled inside the frame 1. A first screw rod 5a is fixed to the end of the limiting plate 5e away from the middle of the frame 1. The end of the first screw rod 5a away from the limiting plate 5e passes through the first limiting groove 5c and then penetrates through the frame 1 and is fixedly connected to the first handle 5b. The limiting plate 5e is used for displacement limiting of the first screw rod 5a. The nut 5g is sleeved on the first screw rod 5a and is threadedly connected to the first screw rod 5a. The nut 5g is arranged inside the first limiting groove 5c. The sliding seat 5d is a C-shaped plate, and the sliding seat 5d is sleeved and assembled on the frame 1. Both the upper and lower ends of the nut 5g are fixedly connected to the sliding seat 5d via the moving connecting rod 5f passing through the communication groove 5h. A bearing seat 2 at one end of the belt conveyor 4 is fixed to the sliding seat 5d. A monitoring device 3 is fixed to the side of the sliding seat 5d away from the center of the frame 1;

[0038] The monitoring device 3 includes a travel switch 3a, a fixed connecting plate 3b, a top pressure assembly plate 3c, a compression spring 3d, a monitoring assembly rod 3e, an assembly extension rod 3f, a second limiting groove 3g and a limiting block 3h. One end of the fixed connecting plate 3b is fixedly connected to the sliding seat 5d. A top pressure assembly plate 3c is fixed to the side of the fixed connecting plate 3b away from the sliding seat 5d and the frame 1. A second limiting groove 3g is provided through the fixed connecting plate 3b. The second limiting groove 3g is a convex-shaped groove, and the larger end of the second limiting groove 3g is located on the side of the fixed connecting plate 3b adjacent to the frame 1. The limiting block 3h is a convex-shaped block, and the limiting block 3h is assembled inside the second limiting groove 3g. The limiting block 3h is locked to the monitoring assembly rod 3e. The monitoring assembly rod 3e is assembled on the side of the fixed connecting plate 3b away from the frame 1. A compression spring 3d is assembled between the side of the monitoring assembly rod 3e away from the sliding seat 5d and the top pressure assembly plate 3c. An assembly extension rod 3f is assembled on the side of the monitoring assembly rod 3e adjacent to the belt conveyor 4. A travel switch 3a is assembled on the side of the assembly extension rod 3f adjacent to the belt conveyor 4. The detection switch of the travel switch 3a is in contact with the belt conveyor 4.

[0039] Wherein, the limiting plate 5e is a non-circular plate, and the size of the connection surface between the limiting plate 5e and the first limiting groove 5c is larger than the size of the connection part between the first limiting groove 5c and the limiting plate 5e.

[0040] Wherein, the diameter of the first screw rod 5a is smaller than the minimum inner diameter of the first limiting groove 5c.

[0041] Wherein, the monitoring assembly rod 3e is composed of a cover plate 3e1, a locking knob 3e2, a second handle 3e3, a third limiting groove 3e4, a top plate 3e5, an assembly block 3e6, a second screw 3e7, a main rod body 3e8 and an adjusting connecting rod 3e9. The bottom of the main rod body 3e8 is locked with a limiting block 3h, a compression spring 3d is installed between the main rod body 3e8 and the top pressure assembly plate 3c, the main rod body 3e8 is provided with a third limiting groove 3e4 on the side away from the fixed connecting plate 3b and the top pressure assembly plate 3c, the top of the main rod body 3e8 is locked with the cover plate 3e1 through the locking knob 3e2, the top of the third limiting groove 3e4 is connected to the cover plate 3e1, the bottom of the cover plate 3e1 is fixed with a top plate 3e5 on the side away from the top pressure assembly plate 3c, and the top plate 3 e5 is arranged in the third limiting groove 3e4, and the second screw rod 3e7 is installed in the third limiting groove 3e4, and the two ends of the second screw rod 3e7 are fixed with adjusting links 3e9, and the adjusting link rod 3e9 passes through the main rod body 3e8 and is fixedly connected with the second handle 3e3 on the side away from the second screw rod 3e7, and the assembly block 3e6 is assembled on the second screw rod 3e7, and the assembly block 3e6 is threadedly connected with the second screw rod 3e7, and the assembly block 3e6 is covered on the upper half of the second screw rod 3e7, and the bottom of the assembly block 3e6 is connected to the bottom of the third limiting groove 3e4 away from the top pressure assembly plate 3c, and the top of the assembly block 3e6 is connected to the bottom of the top plate 3e5, and the assembly extension rod 3f is fixed to the side of the assembly block 3e6 away from the top pressure assembly plate 3c.

[0042] The assembly block 3e6 is limited by the top plate 3e5 in the third limiting groove 3e4 and cannot rotate.

[0043] Wherein, the second screw rod 3e7 is composed of two identical threaded rod bodies.

[0044] Among them, the two identical threaded rods of the second screw rod 3e7 can be fixedly connected, and the two identical threaded rods can also form a second screw rod 3e7 with opposite thread directions on both sides when fixedly connected and combined, so that when the second screw rod 3e7 rotates, it can synchronously drive the assembled assembly block 3e6 to move to both sides of the second screw rod 3e7 or to the middle of the second screw rod 3e7.

[0045] Among them, the two identical threaded rods of the second screw rod 3e7 can also be connected by a connecting protrusion 3e7a. The connecting protrusion 3e7a is a truncated cone block with a convex cross-section. The connecting protrusion 3e7a is embedded and assembled in one threaded rod. The small end face of the connecting protrusion 3e7a passes through one end of one threaded rod and is fixedly connected to one end of the other threaded rod.

[0046] Among them, the locking knob 3e2 is composed of a limit plate 3e2a, a locking screw 3e2b, a third handle 3e2c and a connecting rod 3e2d. The limit plate 3e2a is a circular disc, and a locking screw 3e2b is fixed cocentrically at one end of the limit plate 3e2a. The end of the limit plate 3e2a away from the locking screw 3e2b is fixedly connected to the third handle 3e2c through the connecting rod 3e2d, and the locking screw 3e2b passes through the cover plate 3e1 and is locked to the main rod body 3e8.

[0047] Among them, the travel switch 3a is connected to an alarm or serves as an emergency stop switch for the belt conveyor 4. When the travel switch 3a is pressed, it can trigger an alarm to prompt a shutdown or directly stop the operation of the belt conveyor 4. The two can also be used in combination to stop the operation of the belt conveyor 4 and trigger an alarm at the same time.

[0048] Implementation scheme: When the conveyor belt 4 is adjusted to be tight, the first screw 5a can only rotate in situ because the first screw 5a is limited by the limiting plate 5e, while the nut 5g covered on the first screw 5a and threadedly connected to the first screw 5a cannot rotate because of the moving connecting rod 5f and can only move in the first limiting groove 5c. When the staff rotates the first screw 5a through the first handle 5b, the nut 5g drives the sliding seat 5d to move through the moving connecting rod 5f, so that the tail stick of the conveyor belt 4 follows the displacement to achieve the adjustment of the tension of the elastic belt;

[0049] During the use of the device, when the belt conveyor 4 is rolled into the material and the belt expands, the conveyor belt of the belt conveyor 4 will gradually press the detection switch of the travel switch 3a as the conveyor belt expands, and when the belt expands to a set degree, the travel switch 3a is triggered to sound an alarm and perform an emergency stop of the belt conveyor 4. At the same time, since the travel switch 3a is assembled on the monitoring assembly rod 3e through the assembly extension rod 3f, and the monitoring assembly rod 3e is assembled on the sliding seat 5d of the belt adjusting device 5 through the fixed connecting plate 3b, the tightness adjustment of the belt conveyor 4 by the device will not affect the position of the monitoring switch, and the tightness adjustment of the belt conveyor 4 will not affect the belt expansion monitoring, which is convenient for use.

[0050] When the belt expansion exceeds the movable range of the detection switch of the travel switch 3a, the travel switch 3a will slide on the fixed connecting plate 3b by pressing the monitoring assembly rod 3e against the compression spring 3d through the assembly extension rod 3f. Because the monitoring assembly rod 3e is limited on the second limiting groove 3g of the fixed connecting plate 3b by the limiting block 3h, the monitoring assembly rod 3e can be prevented from deviating from the moving direction of the pressing compression spring 3d due to the pressing, thereby ensuring the stability of the movement. Moreover, because the pressure of the compression spring 3d is greater than the pressure of the detection switch of the travel switch 3a, the monitoring assembly rod 3e pressing the compression spring 3d will not affect the triggering of the travel switch 3a when it moves, thereby better avoiding damage to the monitoring device when encountering a belt expansion beyond the monitoring range, thereby ensuring the stability of the monitoring. At the same time, in order to reduce the misdetection of the travel switch 3a, the device can be equipped with multiple travel switches 3a to monitor different positions of the belt conveyor 4 by providing multiple assembly extension rods 3f. When increasing or decreasing the assembly extension rods 3f, it is only necessary to unlock the cover plate 3e1 by turning the locking knob 3e2, because the assembly block 3e6 is semi-enclosed and assembled by the cover plate 3e1. After removing the cover plate 3e1, the assembly block 3e6 for fixing the extension rod 3f can be directly taken or placed, which is convenient for quickly adding or removing the travel switch 3a, and assembling multiple travel switches 3a in parallel, which can better avoid the false alarm and emergency stop caused by the conveyed materials accidentally touching the travel switch 3a. Since the assembly block 3e6 is semi-enclosed and assembled on the second screw rod 3e7, the assembly block 3e6 itself is limited by the third limiting groove 3e4 and the top plate 3e5, so that the second screw rod 3e7 rotates The monitoring positions of multiple travel switches 3a on the conveyor belt can be quickly adjusted during movement. At the same time, different forms of the second screw 3e7 can be used to achieve different adjustments of multiple travel switches 3a. For example, a second screw 3e7 with opposite threads on both sides can be used to achieve that by rotating one side of the second screw 3e7, multiple travel switches 3a can be adjusted toward or away from the center simultaneously. The second screw 3e7 can be divided into a left and right double screw by a connecting protrusion 3e7a, so that the left and right sides of the second screw 3e7 can be independently adjusted, etc., which is convenient for adjustment and use.

[0051] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0052] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0053] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel belt conveyor protection device, the structure of which comprises a frame, a bearing seat (2), a monitoring device (3) and a belt conveyor (4), wherein the frame is equipped with the belt conveyor (4) via the bearing seat (2), and the monitoring device (3) is used for monitoring the belt conveyor (4) being stretched after being rolled; Features: The frame is also provided with a belt adjusting device (5), and the belt adjusting device (5) is used to adjust the tightness of the belt conveyor (4); The belt adjusting device (5) is composed of a first screw rod (5a), a first handle (5b), a first limiting groove (5c), a sliding seat (5d), a limiting plate (5e), ​​a movable connecting rod (5f), a nut (5g) and a connecting groove (5h). A first limiting groove (5c) is provided inside one end of the frame. Both upper and lower ends of the first limiting groove (5c) penetrate the frame through the connecting groove (5h). The limiting plate (5e) is embedded and assembled inside the frame. The first screw rod (5a) is fixed at the end of the limiting plate (5e) away from the middle of the frame. The end of the first screw rod (5a) away from the limiting plate (5e) passes through the first limiting groove (5c) and then penetrates the frame. The first handle (5b) is fixedly connected to the first handle (5b), the limit plate (5e) is used for limiting the displacement of the first screw rod (5a), the nut (5g) is coated on the first screw rod (5a) and is threadedly connected to the first screw rod (5a), the nut (5g) is arranged in the first limit groove (5c), the sliding seat (5d) is coated and assembled on the frame, the upper and lower ends of the nut (5g) are fixedly connected to the sliding seat (5d) through the connecting groove (5h) through the movable connecting rod (5f), the bearing seat (2) at one end of the belt conveyor (4) is fixed on the sliding seat (5d), and the monitoring device (3) is fixed on the sliding seat (5d) away from the center of the frame; The monitoring device (3) comprises a travel switch (3a), a fixed connecting plate (3b), a top pressure assembly plate (3c), a compression spring (3d), a monitoring assembly rod (3e), an assembly extension rod (3f), a second limiting groove (3g) and a limiting block (3h); one end of the fixed connecting plate (3b) is fixedly connected to the sliding seat (5d); a top pressure assembly plate (3c) is fixed to the fixed connecting plate (3b) away from the sliding seat (5d) and the frame side; a second limiting groove (3g) is penetrated through the fixed connecting plate (3b); the second limiting groove (3g) is a convex groove; the larger end of the second limiting groove (3g) is located on the fixed connecting plate (3b) adjacent to the frame side; The limit block (3h) is a convex block, the limit block (3h) is assembled in the second limit groove (3g), the limit block (3h) is locked with the monitoring assembly rod (3e), the monitoring assembly rod (3e) is assembled on the side of the fixed connecting plate (3b) away from the frame, a compression spring (3d) is assembled between the side of the monitoring assembly rod (3e) away from the sliding seat (5d) and the top pressure assembly plate (3c), the monitoring assembly rod (3e) is assembled with an assembly extension rod (3f) on the side adjacent to the belt conveyor (4), the assembly extension rod (3f) is assembled with a travel switch (3a) on the side adjacent to the belt conveyor (4), and the detection switch of the travel switch (3a) is attached to the belt conveyor (4).

2. A new belt conveyor protection device according to claim 1, characterized in that: The limiting plate (5e) is a non-circular plate, and the size of the connecting surface between the limiting plate (5e) and the first limiting groove (5c) is larger than the size of the connecting portion between the first limiting groove (5c) and the limiting plate (5e).

3. A new type of belt conveyor protection device according to claim 1, characterized in that: The diameter of the first screw (5a) is smaller than the minimum inner diameter of the first limiting groove (5c).

4. A new type of belt conveyor protection device according to claim 1, characterized in that: The monitoring assembly rod (3e) is composed of a cover plate (3e1), a locking knob (3e2), a second handle (3e3), a third limiting groove (3e4), a top plate (3e5), an assembly block (3e6), a second screw rod (3e7), a main rod body (3e8) and an adjusting connecting rod (3e9). The bottom of the main rod body (3e8) is locked with a limiting block (3h). A pressure rod (3e9) is installed between the main rod body (3e8) and the top pressure assembly plate (3c). A compression spring (3d) is provided on the side of the main rod (3e8) away from the fixed connecting plate (3b) and the top pressure assembly plate (3c), the top of the main rod (3e8) is locked with a cover plate (3e1) through a locking knob (3e2), the top of the third limiting groove (3e4) is connected to the cover plate (3e1), and the bottom of the cover plate (3e1) is fixed with a top plate (3e5) away from the top pressure assembly plate (3c), and the top The plate (3e5) is arranged in the third limiting groove (3e4), the third limiting groove (3e4) is equipped with a second screw rod (3e7), both ends of the second screw rod (3e7) are fixed with adjustment rods (3e9), the adjustment rod (3e9) is away from the side of the second screw rod (3e7) and passes through the main rod body (3e8) and is fixedly connected with the second handle (3e3), the assembly block (3e6) is assembled on the second screw rod (3e7), and the assembly The matching block (3e6) is threadedly connected to the second screw rod (3e7), the assembly block (3e6) is covered on the upper part of the second screw rod (3e7), the bottom of the assembly block (3e6) is connected to the bottom of the third limiting groove (3e4) away from the top pressure assembly plate (3c), the top of the assembly block (3e6) is connected to the bottom of the top plate (3e5), and the assembly extension rod (3f) is fixed to the side of the assembly block (3e6) away from the top pressure assembly plate (3c).

5. A new belt conveyor protection device according to claim 4, characterized in that: The assembly block (3e6) is limited by the top plate (3e5) in the third limiting groove (3e4) and cannot rotate.

6. A new type of belt conveyor protection device according to claim 4, characterized in that: The second screw rod (3e7) is composed of two identical threaded rod bodies.

7. A new type of belt conveyor protection device according to claim 6, characterized in that: The two identical threaded rods of the second screw rod (3e7) can be fixedly connected.

8. A new type of belt conveyor protection device according to claim 6, characterized in that: The two identical threaded rods of the second screw rod (3e7) can also be connected via a connecting protrusion (3e7a), wherein the connecting protrusion (3e7a) is a truncated cone-shaped block with a convex cross-section. The connecting protrusion (3e7a) is embedded and assembled in one threaded rod, and the small end face of the connecting protrusion (3e7a) passes through one end of one threaded rod and is fixedly connected to one end of the other threaded rod.

9. A new type of belt conveyor protection device according to claim 4, characterized in that: The locking knob (3e2) is composed of a limit plate (3e2a), a locking screw (3e2b), a third handle (3e2c) and a connecting rod (3e2d). The limit plate (3e2a) is a circular plate. A locking screw (3e2b) is fixed cocentrically to one end of the limit plate (3e2a). The end of the limit plate (3e2a) away from the locking screw (3e2b) is fixedly connected to the third handle (3e2c) through a connecting rod (3e2d). The locking screw (3e2b) passes through the cover plate (3e1) and is locked to the main rod body (3e8).

Images