Mechanical protection device for pull rope switch of belt conveyor

Abstract

The utility model discloses a mechanical protection device for a pull rope switch of a belt conveyor, which comprises a front supporting leg, a rear supporting leg, two sliding plates, two sleeves and a sliding pipe, the front supporting leg and the rear supporting leg are parallel to each other and are vertically fixed on a rack of the belt conveyor, the two sliding plates are respectively connected with the front supporting leg and the rear supporting leg through locking bolts, and the two sleeves are connected with the sliding plates. A sleeve is fixed on each sliding plate, the middle part of the sliding pipe is connected with a handle locking plate, the two ends of the sliding pipe respectively penetrate through the two sleeves in a sliding manner, an adjustable locking plate is arranged on one side, opposite to the front supporting leg, of the lower end of the rear supporting leg, and the adjustable locking plate is connected with the handle locking plate through a lockset. The sliding pipe can be sleeved outside the reset handle of the pull rope switch of the belt conveyor, and is fixed on the rack of the belt conveyor through the sleeve, the front support leg and the rear support leg of the sliding plate, so that the reliable positioning of the reset handle is realized, the accidental starting of the belt conveyor caused by misoperation of the reset handle is avoided, the accident potential is eliminated, and the safety of the belt conveyor is ensured. And the safety of maintenance personnel is ensured.

Description

Technical Field

[0001] The utility model relates to a mechanical protection device for a pull rope switch of a belt conveyor, belonging to the technical field of belt conveyors. Background Art

[0002] Belt conveyors are important equipment for transporting materials in ports. To ensure that they are in good condition, they must be maintained on a daily basis. During maintenance, the belt conveyor needs to be shut down and locked to prevent accidental start-up of the belt conveyor during maintenance, threatening the personal safety of maintenance personnel.

[0003] The existing locking protection method uses the mechanism of the pull-cord switch to prevent the belt conveyor from starting. Since the pull-cord switch is installed outdoors, it is prone to damage and failure. During maintenance, the reset handle of the pull-cord switch is sometimes accidentally collided, causing the reset handle to malfunction and start the belt conveyor. The safety of the maintenance personnel cannot be guaranteed. Therefore, it is very necessary to design a high-reliability belt conveyor pull-cord switch mechanical protection device. Utility Model Content

[0004] The utility model aims to provide a mechanical protection device for a pull-rope switch of a belt conveyor to address the drawbacks of the prior art, so as to prevent the pull-rope switch reset handle from malfunctioning and causing the belt conveyor to start accidentally, thereby ensuring the personal safety of maintenance personnel.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mechanical protection device for a belt conveyor rope switch comprises a front leg, a rear leg, two slide plates, two sleeves and a sliding tube, wherein the front leg and the rear leg are parallel to each other and vertically fixed on a frame of the belt conveyor, the two slide plates are respectively connected to the front leg and the rear leg by locking bolts, a sleeve is fixed on each slide plate, a handle lock plate is connected to the middle part of the sliding tube, and both ends slide through the two sleeves respectively, an adjustable lock plate is provided on the side of the lower end of the rear leg opposite to the front leg, and the adjustable lock plate is connected to the handle lock plate by a lock.

[0007] The mechanical protection device of the belt conveyor pull rope switch mentioned above has a locking bolt on the upper and lower ends of each slide plate, and the middle parts of the front support leg and the rear support leg are provided with long holes matching the locking bolts. The locking bolts pass through the long holes and the through holes at the ends of the slide plates in turn and are screwed into the locking nuts.

[0008] In the mechanical protection device of the belt conveyor pull rope switch, the sliding tube is connected to a coaxial adjustment tube, the interior of the adjustment tube is processed with internal threads, and both ends of the sliding tube are provided with external threads matching the internal threads of the adjustment tube.

[0009] The mechanical protection device of the belt conveyor pull rope switch is characterized in that the adjustable lock plate is connected to the rear support leg through a fixed lock plate, one end of the fixed lock plate is fixed to the side wall of the lower end of the rear support leg, the fixed lock plate and the adjustable lock plate are fixedly connected by connecting bolts, and multiple circular holes matching the connecting bolts are opened on the fixed lock plate and the adjustable lock plate, and the position of the adjustable lock plate is adjusted by passing the connecting bolts through different circular holes.

[0010] In the mechanical protection device of the belt conveyor pull rope switch, a hole plate is provided at the end of the adjustable lock plate, and lock holes matching the lock are provided on the hole plate and the handle lock plate.

[0011] The mechanical protection device of the belt conveyor pull rope switch, the handle lock plate is connected to the sliding tube through a round tube,

[0012] The mechanical protection device of the belt conveyor pull rope switch, wherein the front support leg and the rear support leg are channel steels.

[0013] The sliding tube of the utility model can be sleeved on the outside of the reset handle of the pull rope switch of the belt conveyor, and is fixed to the frame of the belt conveyor through the sleeve, the front support legs and the rear support legs of the slide plate, so as to realize the reliable positioning of the reset handle, and avoid the pull rope switch reset handle from malfunctioning due to various reasons and causing the belt conveyor to start accidentally, thereby eliminating the potential safety of accidents and ensuring the personal safety of maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 is a schematic diagram of the structure of the front outrigger, where Figure 2 a is the main view, Figure 2 b is the left view;

[0017] Figure 3 is a schematic diagram of the structure of the rear outrigger, where Figure 3 a is the main view, Figure 3 b is the left view;

[0018] Figure 4 is a schematic diagram of the structure of the sliding tube and the handle lock plate;

[0019] Figure 5 It is a schematic diagram of the structure of the slide plate and the sleeve, where Figure 5 a is the main view, Figure 5 b is the left view;

[0020] Figure 6is a schematic diagram of the structure of the adjustable locking plate, wherein Figure 6 a is the main view, Figure 6 b is the left view.

[0021] The numbers in the figure are as follows: 1. front support leg; 2. rear support leg; 3. slide plate; 4. sleeve; 5. sliding tube; 6. handle lock plate; 7. adjustable lock plate; 8. adjustment tube; 9. long hole; 10. fixed lock plate; 11. locking bolt; 12. round tube; 13. orifice plate; 14. connecting bolt; 15. lock hole. DETAILED DESCRIPTION

[0022] In view of the problems existing in the prior art, the utility model provides a mechanical protection device for a belt conveyor pull rope switch, which can effectively lock the reset handle of the belt conveyor pull rope switch, not only improving the safety of equipment maintenance, but also extending the service life of the pull rope switch locking device and reducing the operating cost of the equipment.

[0023] See also Figure 1-Figure 6 The utility model mainly includes a front leg 1, a rear leg 2, a slide plate 3, a sleeve 4, a sliding tube 5, a handle lock plate 6, an adjustable lock plate 7 and an adjustment tube 8. The front leg 1 and the rear leg 2 are cut from 50 galvanized channel steel, the slide plate 3 is cut from a steel plate, the sleeve 4 is made of a steel pipe, the slide plate 3 and the sleeve 4 are welded together, the sliding tube 5 is a seamless steel pipe with threads at both ends, the handle lock plate 6 is welded from a round tube 12 and a strip steel plate, the adjustable lock plate 7 is made by drilling a steel plate, and the adjustment tube 8 is a seamless steel pipe with internal threads.

[0024] See also Figure 2 and Figure 3 The front leg 1 and the rear leg 2 are 50mm×25mm×3mm channel steel, 300mm long, with a long hole 9 of 20mm diameter and 220mm length in the middle, which is convenient for the locking bolts 11 at both ends of the slide plate 3 to pass through and adjust the position. A 50mm×40mm×8mmd fixed lock plate 10 is welded on the side opposite to the front leg 1 at the lower end of the rear leg 2, and 6 round holes of 10mm diameter are opened on the fixed lock plate 10.

[0025] See also Figure 4 The sliding tube 5 is a steel tube with an outer diameter of 30 mm, a wall thickness of 2.5 mm, and a length of 430 mm. The front and rear ends are respectively processed with external tube threads. The handle lock plate 6 is a strip steel plate of 75 mm × 30 mm × 8 mm. The upper end thereof is connected to the sliding tube 5 through a round tube 12 with an outer diameter of 20 mm and a length of 80 mm. There are 4 lock holes with a diameter of 10 mm evenly distributed on the handle lock plate 6. The round tube 12 is connected to the sliding tube 5 and the handle lock plate 6 by welding.

[0026] See also Figure 5The sleeve 4 is a steel pipe with an outer diameter of 38mm, an inner diameter of 31mm, and a length of 65mm, which is welded to a rectangular slide plate 3 of 120mm×40mm×8mm at an angle of 10°. A circular hole with a diameter of 20mm is opened at the upper and lower ends of the slide plate 3, and is fixed to the front leg 1 and the rear leg 2 respectively by M18 locking bolts 11. The sliding tube 5 is installed through the two sleeves 4 and can slide along the two sleeves 4.

[0027] The adjustment tube 8 is a thick-walled steel tube with an outer diameter of 38 mm and a length of 40 mm. It is processed with an internal thread and cooperates with the front and rear threads of the sliding tube 5. It can be installed to the front or rear end of the sliding tube 5 according to the length of the pull-cord switch reset handle.

[0028] See also Figure 6 The adjustable lock plate 7 includes two rectangular steel plates of 55mm×20mm×8mm, one end of which is vertically welded to a hole plate 13 of 65mm×36mm×8mm. The two rectangular steel plates are provided with multiple circular holes of 10mm in diameter, and are fixed to the fixed lock plate 10 by four M8 connecting bolts 14. The position of the adjustable lock plate 7 can be adjusted by passing the connecting bolts 14 through different circular holes according to the length of the pull rope switch reset handle. There are four lock holes of 10mm in diameter on the hole plate 13, and the hole plate 13 with lock holes and the handle lock plate 6 can be connected together by a lock (such as a padlock).

[0029] The use process of the utility model is as follows:

[0030] First, place the device on the side of the pull-cord switch according to the position of the pull-cord switch reset handle, with the front leg 1 parallel to the rear leg 2 and welded to the frame of the belt conveyor. When the pull-cord switch is actuated, the belt conveyor stops, and the pull-cord switch reset handle is automatically pressed down or lifted up. This can be solved by mirror installation, loosen the locking bolt 11, adjust the height of the two slides 3 and the sleeve 4, so that the sliding tube 5 and the pull-cord switch reset handle are in a straight line, then tighten the locking bolt 11, and then push the round tube 12 on the upper part of the handle lock plate 6, so that one end of the sliding tube 5 is sleeved on the outside of the reset handle, and then make the handle lock plate 6 and the adjustable lock plate 7 contact, install the lock to connect the handle lock plate 6 and the adjustable lock plate 7 together, prevent the pull-cord switch reset handle from malfunctioning to start the belt conveyor, and ensure the safety of maintenance.

[0031] The sliding tube 5 of different sizes can be selected according to the width of the pull rope switch reset handle. The adjustment tube 8 is arranged at the end of the sliding tube 5 to increase the length of the sliding tube 5, so that the device can adapt to the length of the pull rope switch reset handle of different models and improve the versatility of the device.

[0032] The utility model is suitable for most handle reset rope switches on the market, and lifting reset and pressing reset can be achieved through the installation of the protection device. The utility model has simple structure, convenient installation, strong applicability, low cost, and long service life.

Claims

1. A mechanical protection device for a pull rope switch of a belt conveyor, characterized in that: The utility model comprises a front support leg (1), a rear support leg (2), two slide plates (3), two sleeves (4) and a sliding tube (5), wherein the front support leg (1) and the rear support leg (2) are parallel to each other and are vertically fixed on a frame of a belt conveyor, the two slide plates (3) are respectively connected to the front support leg (1) and the rear support leg (2) through locking bolts (11), a sleeve (4) is fixed on each slide plate (3), a handle lock plate (6) is connected to the middle part of the sliding tube (5), and two ends thereof slide through the two sleeves (4), respectively, and an adjustable lock plate (7) is provided on the side of the lower end of the rear support leg (2) opposite to the front support leg (1), and the adjustable lock plate (7) is connected to the handle lock plate (6) through a lock.

2. The mechanical protection device for a pull rope switch of a belt conveyor according to claim 1 is characterized in that: A locking bolt (11) is provided at the upper end and the lower end of each slide plate (3), and a long hole (9) matching the locking bolt (11) is provided in the middle of the front leg (1) and the rear leg (2). The locking bolt (11) passes through the long hole (9) and the through hole at the end of the slide plate (3) in sequence and is then screwed into a locking nut.

3. A mechanical protection device for a pull rope switch of a belt conveyor according to claim 1 or 2, characterized in that: The sliding tube (5) is connected to a coaxial adjustment tube (8), the interior of the adjustment tube (8) is processed with an internal thread, and both ends of the sliding tube (5) are provided with external threads matching the internal threads of the adjustment tube (8).

4. The mechanical protection device for a pull rope switch of a belt conveyor according to claim 3 is characterized in that: The adjustable locking plate (7) is connected to the rear leg (2) via a fixed locking plate (10); one end of the fixed locking plate (10) is fixed to the side wall at the lower end of the rear leg (2); the fixed locking plate (10) and the adjustable locking plate (7) are fixedly connected via connecting bolts (14); a plurality of circular holes matching the connecting bolts (14) are formed on the fixed locking plate (10) and the adjustable locking plate (7); and the position of the adjustable locking plate (7) is adjusted by passing the connecting bolts (14) through different circular holes.

5. The mechanical protection device for a pull rope switch of a belt conveyor according to claim 4 is characterized in that: A perforated plate (13) is provided at the end of the adjustable lock plate (7), and a lock hole (15) matching the lock is provided on the perforated plate (13) and the handle lock plate (6).

6. A mechanical protection device for a pull-rope switch of a belt conveyor according to claim 5, characterized in that: The handle lock plate (6) is connected to the sliding tube (5) via a circular tube (12).

7. A mechanical protection device for a pull-rope switch of a belt conveyor according to claim 6, characterized in that: The front supporting legs (1) and the rear supporting legs (2) are channel steels.

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