Electronic fence

Abstract

The utility model discloses an electronic fence which comprises a side fence, a beam frame, a guide plate, an elastic pull rope, a hinge door body and a proximity switch assembly. The side fences, the door frame opening and the hinge door body are designed to form a semi-enclosed structure, the bottom end of the belt conveyor can be effectively enclosed, workers are prevented from being hurt when passing through the position below the bottom end of the belt conveyor, the guide plate is installed at the position of the beam frame through the hinge, the guide plate is pulled by the elastic pull rope, and the guide plate is not prone to falling off. The guide plate is in an inclined state, the first function of the guide plate is to guide falling coal gangue to the center of the fence, and the second function of the guide plate is to jack the guide plate upwards to be horizontal by the hinge door body when the hinge door body is opened, so that cleaning workers are protected; in addition, a proximity switch assembly is further arranged on the hinge door body, the proximity switch assembly is in communication connection with a controller of the belt conveyor, and therefore the hinge door body can be opened, and the belt conveyor can be automatically stopped.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyor protection, in particular to an electronic fence. Background Art

[0002] When the belt conveyor in the coal mine runs underground, some crushed coal gangue will slide down along the belt conveyor to the bottom end, and workers need to clean it regularly. During the cleaning process, safety accidents are likely to occur. Therefore, the utility model proposes a new type of electronic fence. Summary of the Invention

[0003] In order to solve the above-mentioned shortcomings and deficiencies of the prior art, the purpose of the utility model is to provide an electronic fence.

[0004] The technical solution of the utility model is as follows: An electronic fence, comprising:

[0005] Side fences, two groups of the side fences are provided, and the two groups of side fences are distributed on both sides of the bottom end of the belt conveyor. The tops of the two groups of side fences are fixedly connected with a beam frame together;

[0006] The beam frame is in an inverted "L" shape, and a horizontal shaft is rotatably installed on the inner side of the beam frame through two groups of ear frames. A guiding plate is rotatably installed on the horizontal shaft, and an elastic pulling rope is fixedly installed between the top of the guiding plate and the side of the beam frame;

[0007] The side edges of the two groups of side fences and the beam frame together form a door frame opening, and a hinged door body that opens inward is installed on the inner side of the door frame opening through a hinge;

[0008] A proximity switch assembly for detecting whether the hinged door body is opened is installed on the side of the hinged door body, and the proximity switch assembly is communicatively connected with the controller of the belt conveyor.

[0009] Preferably, it further comprises: a fixed track, the fixed track is fixedly installed on the ground, the bottom of the side fence is fixedly connected with a fixed seat, and the fixed seat is slidably connected with the fixed track.

[0010] Preferably, it further comprises: a transverse conveyor belt, the transverse conveyor belt is vertically arranged below the bottom end of the belt conveyor, and a first notch is formed at the bottom of the side fence and above the transverse conveyor belt.

[0011] Preferably, the hinged door body is a symmetric double-opening hinged door, and a second notch is formed at the bottom of the hinged door body.

[0012] Preferably, the lower oblique side of the guiding plate corresponds to the upper side of the transverse conveyor belt.

[0013] Preferably, the side fence is a grille net.

[0014] The beneficial effects of the present utility model are as follows: Compared with the prior art,

[0015] In the present utility model, a semi-enclosed structure is formed by designing a side fence, a door frame opening, and a hinged door body, which can effectively enclose the bottom position of the belt conveyor, preventing workers from passing under the bottom of the belt conveyor and causing harm to the workers. Moreover, a guiding plate is installed at the hinge of the beam frame, and the guiding plate is pulled by an elastic rope, making the guiding plate in an inclined state. The first function of the guiding plate is to guide the falling coal gangue to the center of the fence. The second function of the guiding plate is that when the hinged door body is opened, the hinged door body pushes the guiding plate upward to the horizontal position, and the cleaning workers can clean the coal gangue at the bottom of the belt conveyor in the area below the guiding plate, thus protecting the cleaning workers. And the present utility model also sets a proximity switch assembly on the hinged door body, and the proximity switch assembly is communicatively connected to the controller of the belt conveyor. Generally, when workers clean the coal gangue at the bottom of the belt conveyor, they need to stop the belt conveyor. Through the designed proximity switch assembly, when the hinged door body is opened, the opening information of the hinged door body can be transmitted to the controller of the belt conveyor. If the workers forget to stop the machine, the controller can automatically perform the shutdown operation of the belt conveyor, thus ensuring the safety of the cleaning personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional view of the present utility model;

[0017] Figure 2 is a schematic diagram of the present utility model in use;

[0018] Figure 3 is a rear schematic diagram of the present utility model;

[0019] Figure 4 is a top view of the present utility model;

[0020] Figure 5 is a circuit connection block diagram of the present invention.

[0021] Legend Explanation:

[0022] 1. Fixed track; 2. Side fence; 3. Fixed seat; 4. First notch; 5. Horizontal conveyor belt; 6. Beam frame; 7. Ear frame; 8. Cross shaft; 9. Guiding plate; 10. Elastic rope; 11. Hinged door body; 12. Feeding hopper; 13. Proximity switch assembly; 14. Second notch; 15. Belt conveyor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further introduces the utility model in combination with the accompanying drawings and specific embodiments:

[0024] Refer to Figures 1 to 5, An electronic fence, comprising: side fences 2, beam frames 6, guide plates 9, elastic ropes 10, hinge doors 11 and proximity switch assemblies 13.

[0025] As Figure 2 shown in the figure, the electronic fence is arranged at the bottom end of the belt conveyor 15. When the belt conveyor 15 is working, materials are fed from the feeding hopper 12 and fall onto the belt conveyor 15. The conveyor belt on the upper side of the belt conveyor 15 moves obliquely upward, thus driving the coal gangue to be conveyed upward. However, some crushed coal gangue cannot make good contact with the conveyor belt of the belt conveyor 15 and slide down under the action of gravity, and finally accumulate at the position below the rollers under the belt conveyor 15, and workers need to clean these coal gangue regularly.

[0026] There are two groups of side fences 2, and the two groups of side fences 2 are distributed on both sides of the bottom end of the belt conveyor 15. The tops of the two groups of side fences 2 are fixedly connected to a beam frame 6 together. The beam frame 6 is in an inverted "L" shape, and the two ends of the beam frame 6 are fixedly welded to the two groups of side fences 2 respectively. A cross shaft 8 is rotatably installed on the inner side of the beam frame 6 through two ear frames 7, and a guide plate 9 is rotatably installed on the cross shaft 8. An elastic rope 10 is fixedly installed between the top of the guide plate 9 and the side of the beam frame 6. The first end of the elastic rope 10 is fixedly installed with the top of the guide plate 9, and the second end of the elastic rope 10 is fixedly installed with the side of the beam frame 6. The elastic rope 10 makes the guide plate 9 in an inclined state, and the inclined guide plate 9 has an elastic buffering effect (the elastic rope 10 has elasticity, so that the guide plate 9 can rotate elastically under force). Some of the coal gangue falling from the bottom end of the belt conveyor 15 will fall on the guide plate 9, and under the guiding action of the guide plate 9, most of the coal gangue will fall into the middle area.

[0027] The side edges of the two groups of side fences 2 and the beam frame 6 together form a door frame opening, and a hinge door 11 that opens inward is hinge-mounted inside the door frame opening. A semi-enclosed (three-sided shielding) structure is formed between the two groups of side fences 2 and the hinge door 11, so as to effectively prevent coal miners from straying into the bottom of the belt conveyor 15 and being injured by the falling coal.

[0028] A proximity switch assembly 13 for detecting whether the hinge door 11 is opened is installed on the side of the hinge door 11, and the proximity switch assembly 13 is communicatively connected to the controller of the belt conveyor 15.

[0029] Generally, when the hinge door 11 is opened to clean the coal gangue, the belt conveyor 15 needs to be stopped. Through the designed proximity switch assembly 13, when the proximity switch assembly 13 detects that the hinge door 11 is in an open state, it transmits a signal to the controller of the belt conveyor 15, and the controller of the belt conveyor 15 controls the belt conveyor 15 to stop.

[0030] Among them, the proximity switch assembly 13 can select commonly used optical distance sensors or contact sensors currently.

[0031] In an embodiment, it further includes: a fixed track 1, which is fixedly installed on the ground. There are also two groups of corresponding fixed tracks 1. The two fixed tracks 1 respectively correspond to two groups of side fences 2. A fixed seat 3 is fixedly connected to the bottom of the side fence 2, and the fixed seat 3 is slidably connected to the fixed track 1.

[0032] Specifically, the position distance between the side fence 2 and the belt conveyor 15 can be slidably adjusted, and after the adjustment is completed, the fixed track 1 and the fixed seat 3 are fastened with bolts / screws.

[0033] In an embodiment, it further includes: a transverse conveyor belt 5, which is vertically arranged below the bottom end of the belt conveyor 15. A first notch 4 is opened at the bottom of the side fence 2 and above the transverse conveyor belt 5.

[0034] The coal gangue falling from the bottom end of the belt conveyor 15 lands on the transverse conveyor belt 5. When a certain amount of coal gangue accumulates on the transverse conveyor belt 5, the worker can rotate the belt conveyor 15 to move the coal gangue to the outside of the side fence 2 for cleaning. Among them, the transverse conveyor belt 5 can be driven by an electric or manual roller. For example, a handwheel is arranged at the manual rolling end, and the worker rotates the handwheel to drive the roller of the transverse conveyor belt 5 to rotate.

[0035] The lower oblique side of the guiding plate 9 corresponds to the upper side of the transverse conveyor belt 5, so that the coal gangue sliding down from the guiding plate 9 lands on the transverse conveyor belt 5, thereby ensuring that the transverse conveyor belt 5 can better convey the coal gangue.

[0036] In an embodiment, the hinge door body 11 is a symmetric double-opening hinge door. A second notch 14 is opened at the bottom of the hinge door body 11, and the second notch 14 corresponds to the transverse conveyor belt 5, so as to avoid the influence of the transverse conveyor belt 5 on the opening and closing of the hinge door body 11.

[0037] The side fence 2 is a grille net and is a mesh structure.

[0038] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. An electronic fence, characterized in that: include: Side fences (2), wherein two groups of the side fences (2) are provided, and the two groups of the side fences (2) are distributed on both sides of the bottom end of the belt conveyor (15), and the tops of the two groups of the side fences (2) are fixedly connected to a beam frame (6); The beam frame (6) is in an inverted "L" shape, and a transverse axis (8) is rotatably mounted on the inner side of the beam frame (6) via two sets of ear frames (7), a guide plate (9) is rotatably mounted on the transverse axis (8), and an elastic drawstring (10) is fixedly mounted between the top of the guide plate (9) and the side of the beam frame (6); The side edges of the two groups of side fences (2) and the beam frame (6) together form a door frame opening, and the inner hinge of the door frame opening is equipped with a hinge door body (11) that opens inwards; A proximity switch assembly (13) for detecting whether the hinged door body (11) is open is installed on the side of the hinged door body (11), and the proximity switch assembly (13) is communicatively connected to a controller of the belt conveyor (15).

2. The electronic fence according to claim 1, characterized in that: Also includes: A fixed track (1) is fixedly installed on the ground, a fixed seat (3) is fixedly connected to the bottom of the side fence (2), and the fixed seat (3) is slidably connected to the fixed track (1).

3. The electronic fence according to claim 2, characterized in that: Also includes: A transverse conveyor belt (5) is vertically arranged below the bottom end of the belt conveyor (15), and a first notch (4) is provided at the bottom of the side fence (2) and above the transverse conveyor belt (5).

4. The electronic fence according to claim 3, characterized in that: The hinge door body (11) is a symmetrical double-opening hinge door, and a second notch (14) is provided at the bottom of the hinge door body (11).

5. The electronic fence according to claim 3, characterized in that: The oblique lower portion of the guide plate (9) corresponds to the upper portion of the transverse conveyor belt (5).

6. The electronic fence according to claim 1, characterized in that: The side fence (2) is a grille mesh.

Images