Explosion-proof forklift

Abstract

The utility model belongs to the technical field of forklifts, and particularly relates to an explosion-proof forklift which comprises a forklift body and a pallet fork, the forklift body comprises a sealing shell used for installing equipment, a control box used for installing electrical equipment is fixedly assembled in the sealing shell, one side of the control box is provided with a cable port used for a cable connected with the electrical equipment inside to penetrate, and the other side of the control box is provided with a power source. The inner wall of the cable port is fixedly provided with an inflatable sealing ring which can deform according to the size of the cable diameter, a controller is assembled in the control box, the inner wall of the cable port is provided with wire diameter detection devices in an annular array at equal intervals, the sealing surfaces of the box body and the cover plate are provided with a sealing groove and a sealing convex ring respectively, and the sections of the sealing groove and the sealing convex ring are both of a trapezoidal structure. The depth of the sealing groove is larger than the height of the sealing convex ring, the inner wall of the sealing groove is correspondingly parallel to the outer wall of the sealing convex ring, tight connection of cables is guaranteed, the connector can adapt to cables with different wire diameters, and the flexibility and reliability of connection are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of forklifts, in particular to an explosion-proof forklift. Background Art

[0002] The main difference between explosion-proof forklifts and ordinary forklifts is the circuit, especially the motor. Explosion-proof forklifts are usually used in industrial sectors such as petroleum, chemical, pharmaceutical, textile, military, paint, coating, civil explosives, as well as ports, railways, freight yards, warehouses and other places containing explosive flammable gases, vapors and combustible dust for loading, unloading, stacking and handling operations.

[0003] Existing explosion-proof forklifts are mainly composed of the following structures: electrical system, controller, frame, and fork. The working principle is: the electrical system receives the driver's operating instructions, controls the explosion-proof motor to drive the movement of the wheels and fork, realizes the movement of the forklift and the handling of goods, and realizes safe and efficient handling operations in explosive environments. Among them, the control box is an important component of the explosion-proof forklift.

[0004] The explosion-proof forklifts in the existing technology currently have the following disadvantages: the control box has limitations in terms of cable connection and can only accommodate cables with specific diameters. Cables with different diameters require replacement of seals of corresponding sizes, which complicates assembly and limits the scope of application. In addition, the cable connection is not tight enough, resulting in poor sealing effect. Therefore, an explosion-proof forklift is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the shortcomings of existing explosion-proof forklifts, the utility model solves the problems of flexibility and sealing of cable connections through a deformable inflatable sealing ring and a wire diameter detection device, and proposes an explosion-proof forklift.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an explosion-proof forklift described in the present invention includes a body, a fork is fixedly installed on one side of the body, an operating handle is provided on the body, the body includes a sealed shell for installing equipment, a control box for installing electrical equipment is fixedly installed in the sealed shell, a cable port is provided on one side of the control box for inserting cables connected to the electrical equipment inside the control box, an inflatable sealing ring that can be deformed according to the diameter of the cable is fixedly provided on the inner wall of the cable port, a controller is installed in the control box, wire diameter detection devices are equidistantly provided on the inner wall of the cable port in the form of a ring, an air pump for deforming the inflatable sealing ring is provided in the sealed shell, the air pump is connected to the inflatable sealing ring through an air pipe, and the control end of the controller is connected to the power control end of the air pump through a wire.

[0007] Preferably, the wire diameter detection device includes a rocker arm that is swingably arranged by a rotating rod, an end of the rocker arm that contacts the cable is rotatably equipped with a roller, and also includes a rotary encoder that is connected to the rotating rod and is used to detect angle data.

[0008] Preferably, a compression spring is connected between the rocker arm and the inner wall of the cable opening.

[0009] Preferably, an air pressure detector for detecting the internal air pressure is fixedly installed in the inflatable sealing ring.

[0010] Preferably, the data input terminal of the controller is connected to the rotary encoder and the air pressure detector via a wire.

[0011] Preferably, the control box includes a box body and a cover plate fixedly assembled by a number of fixing bolts, a sealing groove is provided on the sealing surface of the box body, and a sealing convex ring corresponding to the sealing groove is fixedly provided on the sealing surface of the cover plate, the cross-sections of the sealing groove and the sealing convex ring are both trapezoidal structures, the depth of the sealing groove is longer than the height of the sealing convex ring, and the inner wall of the sealing groove is parallel to the outer wall of the sealing convex ring.

[0012] Beneficial effects of the utility model:

[0013] 1. The utility model has an inflatable sealing ring fixed on the inner wall of the cable opening that can be deformed according to the diameter of the cable. This not only ensures a tight connection of the cable, but also can adapt to cables of different diameters, thereby improving the flexibility and reliability of the connection;

[0014] 2. Through the design of the control box sealing structure, the trapezoidal cross-section of the sealing groove and the sealing convex ring is matched to improve the overall sealing of the equipment, thereby enhancing the explosion-proof performance, which is crucial for forklifts working in flammable and explosive environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 It is a structural diagram of the entire utility model;

[0017] Figure 2 This is a structural cross-sectional view of the cable port and wire diameter detection device of the utility model;

[0018] Figure 3 It is a structural diagram of the box body of the utility model;

[0019] Figure 4 It is a structural diagram of the cover plate of the utility model;

[0020] Figure 5 This is a structural cross-sectional view of the sealing groove and sealing convex ring of the utility model;

[0021] Legend:

[0022] 1. Vehicle body; 2. Fork; 3. Operating handle; 4. Sealed housing; 5. Control box; 501. Box body; 502. Cover plate; 6. Cable; 7. Cable port; 8. Wire diameter detection device; 801. Rotating rod; 802. Rocker arm; 803. Roller; 804. Rotary encoder; 9. Inflatable sealing ring; 901. Air pressure detector; 10. Air pump; 11. Air pipe; 12. Compression spring; 13. Sealing groove; 14. Sealing cam; 15. Controller. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Specific examples are given below.

[0025] See also Figure 1-Figure 5 , an explosion-proof forklift described in the utility model includes a body 1, one side of the body 1 is fixedly equipped with a fork 2, the body 1 is provided with an operating handle 3, the body 1 includes a sealed shell 4 for installing equipment, a control box 5 for installing electrical equipment is fixedly installed in the sealed shell 4, one side of the control box 5 is provided with a cable port 7 for inserting a cable 6 connected to the internal electrical equipment thereof, an inflatable sealing ring 9 that can be deformed according to the wire diameter of the cable 6 is fixedly provided on the inner wall of the cable port 7, a controller 15 is installed in the control box 5, and a wire diameter detection device 8 is equidistantly provided on the inner wall of the cable port 7 in a circular array, an air pump 10 for deforming the inflatable sealing ring 9 is provided in the sealed shell 4, the air pump 10 is connected to the inflatable sealing ring 9 through an air pipe 11, and the control end of the controller 15 is connected to the power control end of the air pump 10 through a wire;

[0026] The wire diameter detection device 8 includes a swing rod 802 that is swingably arranged by a rotating rod 801, and a roller 803 is rotatably mounted on the end of the swing rod 802 that contacts the cable 6. It also includes a rotary encoder 804 that is connected to the rotating rod 801 and is used to detect angle data. The swing rod 802 is connected to the inner wall of the cable port 7 with a compression spring 12. The air pressure detector 901 for detecting the internal air pressure is fixedly mounted in the inflatable sealing ring 9. The data input end of the controller 15 is connected to the rotary encoder 804 and the air pressure detector 9 through a wire. 01 Data connection; During work, when the staff inserts the cable 6 into the cable port 7 for assembly, in order to make the sealing structure in the cable port 7 able to cope with cables 6 of different diameters and ensure the sealing, the cable 6 is detected by the wire diameter detection device 8 after passing through the cable port 7. The cable 6 is continuously inserted, and the roller 803 contacts the surface of the cable 6 to reduce the friction. The cable 6 squeezes and pushes the pendulum rod 802, and the pendulum rod 802 compresses the compression spring 12. At the same time, the compression spring 12 applies an opposite force to the pendulum rod 802, so that the pendulum rod 802 applies a downward pressure on the cable 6. The downward pressure clamps the cable 6. The compression spring 12 can provide kinetic energy for the reset of the rocker arm 802 and apply clamping force to the cable 6 to ensure that the cable 6 does not shake. The rocker arm 802 rotates to drive the rotating rod 801 to rotate, and the rotating rod 801 drives the rotating shaft of the rotary encoder 804 to rotate. At the same time, the rotary encoder 804 detects the rotation data and sends the data to the controller 15. The controller 15 analyzes and calculates the angle data through the built-in database, and obtains the wire diameter value of the cable 6 according to the angle data. The controller 15 then controls the air pump 10 to energize and inflate the cable 6. Gas is filled in the sealing ring 9, and the air pressure detector 901 detects the value in the inflated sealing ring 9 in real time and sends the air pressure data to the controller 15. When the air pressure value reaches the air pressure that matches the wire diameter of the detection cable 6, the controller 15 controls to close the air pump 10. The air pressure can ensure that the inflated sealing ring 9 is deformed to a state of close fit with the surface of the cable 6, effectively preventing the existence of gaps that cause external gas and dust to enter the control box 5. This not only ensures the tight connection of the cable 6, but also can adapt to cables 6 of different wire diameters, thereby improving the flexibility and reliability of the connection.

[0027] Furthermore, the control box 5 includes a box body 501 and a cover plate 502 fixedly assembled by a number of fixing bolts. A sealing groove 13 is provided on the sealing surface of the box body 501, and a sealing convex ring 14 is fixedly provided on the sealing surface of the cover plate 502 to correspond to the sealing groove 13. The cross-sections of the sealing groove 13 and the sealing convex ring 14 are both trapezoidal structures. The depth of the sealing groove 13 is longer than the height of the sealing convex ring 14, and the inner wall of the sealing groove 13 is parallel to the outer wall of the sealing convex ring 14. When working, the sealing performance of the control box 5 is of paramount importance. There are many electrical appliances installed in the control box 5, and it is necessary to prevent the interior from easily entering. When the box body 501 and the cover plate 502 are fixedly assembled, the sealing convex ring 14 is inserted into the sealing groove 13. Since the sealing groove 13 is deeper than the sealing convex ring 14, when the sealing surface of the cover plate 502 and the box body 501 are in contact, the trapezoidal outer wall of the sealing convex ring 14 is tightly fitted with the trapezoidal inner wall of the sealing groove 13. When the cover plate 502 and the box body 501 are fixed, the sealing convex ring 14 and the sealing groove 13 are tightly abutted, and the sealing convex ring 14 is tightly embedded in the sealing groove 13. This design also increases the sealing contact area and the sealing path length, which can effectively prevent the intrusion of external hazardous substances.

[0028] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An explosion-proof forklift, comprising a body (1), a fork (2) fixedly mounted on one side of the body (1), and an operating handle (3) provided on the body (1), characterized in that: The vehicle body (1) includes a sealed housing (4) for installing equipment, a control box (5) for installing electrical equipment is fixedly installed in the sealed housing (4), a cable port (7) for inserting a cable (6) connected to the electrical equipment inside the control box (5) is provided on one side of the control box (5), an inflatable sealing ring (9) that can be deformed according to the wire diameter of the cable (6) is fixedly provided on the inner wall of the cable port (7), a controller (15) is installed in the control box (5), a wire diameter detection device (8) is equidistantly provided in a circular array on the inner wall of the cable port (7), an air pump (10) for deforming the inflatable sealing ring (9) is provided in the sealed housing (4), the air pump (10) is communicated with the inflatable sealing ring (9) through an air pipe (11), and a control end of the controller (15) is connected to a power control end of the air pump (10) through a wire.

2. The explosion-proof forklift according to claim 1, characterized in that: The wire diameter detection device (8) comprises a swing rod (802) swung by a rotating rod (801), a roller (803) being rotatably mounted on one end of the swing rod (802) in contact with the cable (6), and a rotary encoder (804) for detecting angle data, which is axially connected to the rotating rod (801).

3. The explosion-proof forklift according to claim 2, characterized in that: The swing rod (802) is terminated with a compression spring (12) between the inner wall of the cable opening (7).

4. The explosion-proof forklift according to claim 1, characterized in that: An air pressure detector (901) for detecting the internal air pressure is fixedly mounted inside the inflatable sealing ring (9).

5. The explosion-proof forklift according to claim 1, characterized in that: The data input end of the controller (15) is connected to the rotary encoder (804) and the air pressure detector (901) via a wire.

6. The explosion-proof forklift according to claim 1, characterized in that: The control box (5) comprises a box body (501) and a cover plate (502) fixedly assembled by a plurality of fixing bolts. A sealing groove (13) is provided on the sealing surface of the box body (501). A sealing convex ring (14) corresponding to and matching the sealing groove (13) is fixedly provided on the sealing surface of the cover plate (502). The cross sections of the sealing groove (13) and the sealing convex ring (14) are both trapezoidal in structure. The depth of the sealing groove (13) is longer than the height of the sealing convex ring (14), and the inner wall of the sealing groove (13) is parallel to the outer wall of the sealing convex ring (14).

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