Explosion-proof power device

Abstract

The invention discloses an anti-explosion power device which comprises an anti-explosion motor, a differential mechanism, a planetary reducer, a transmission shaft and an anti-explosion shell. An output shaft of the explosion-proof motor is connected with the transmission shaft through the differential mechanism; planetary reducers are arranged at the two ends of the transmission shaft, the planetary reducers at the two ends are coaxial with the axis of the transmission shaft, and the transmission shaft penetrates through the explosion-proof motor; power output by the explosion-proof motor is transmitted to the planetary reducers at the two ends through the transmission shaft after being differentiated through the differential mechanism. The explosion-proof motor, the differential mechanism, the planetary reducer and the transmission shaft are contained in the explosion-proof shell through a detachable connecting structure so as to be isolated from the external environment. The transmission shaft and the planetary reducer are coaxially arranged, the transmission shaft and the planetary reducer are integrated with the differential mechanism, and under the whole anti-explosion shell wrapping arrangement, in the design process of the anti-explosion forklift, the integration degree of the forklift is improved, and the space layout of the forklift is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of special equipment, and in particular to an explosion-proof power device. Background Art

[0002] In the industrial sectors where production activities are carried out in various industries, there are substances that are flammable and explosive due to their physical properties, making material handling a very challenging task.

[0003] With the continuous development of the new energy industry, the new technology field of industrial vehicles is also developing rapidly. Compared with traditional fuel explosion-proof forklifts, electric forklifts generally adopt a split drive axle structure, that is, the reduction box is perpendicular to the bridge body, and the drive motor and reduction box are parallel or perpendicular to the bridge housing after assembly. They are all independent modules. Compared with the whole vehicle, the space occupied is larger, which affects the maneuverability of the vehicle.

[0004] Therefore, in order to cope with the limited space range when the forklift is operating, reducing the vehicle's external dimensions is a technical problem that urgently needs to be solved in this field. Summary of the invention

[0005] In order to solve the problem that the electric forklift adopts a split drive axle structure and has a large vehicle volume in the above-mentioned prior art, the present application combines the bridge structure and the casing of the explosion-proof motor into one, so that the structure has the technical advantage of being highly integrated, thereby greatly reducing the volume of the forklift equipment.

[0006] The present invention provides an explosion-proof power device, and the specific technical solution is as follows, including: an explosion-proof motor, a differential, a planetary reducer, a transmission shaft, and an explosion-proof housing; The output shaft of the explosion-proof motor is connected to the transmission shaft through the differential; The planetary reducers are arranged at both ends of the transmission shaft, the planetary reducers at both ends are arranged coaxially with the axis of the transmission shaft, and the transmission shaft passes through the explosion-proof motor arrangement; The power output by the explosion-proof motor is transmitted to the planetary reducers at both ends by the transmission shaft after being differentiated by the differential; The explosion-proof housing accommodates the explosion-proof motor, the differential, the planetary reducer, and the transmission shaft inside through a detachable connection structure to isolate them from the external environment.

[0007] Preferably, the specific structure of the explosion-proof motor includes: a housing, a front cover, a rear cover, a rotor assembly, a stator assembly, a junction box, and a bearing; The housing, the front cover and the rear cover are combined to form a closed space for arranging the stator assembly; The side surface of the stator assembly is in contact with the housing, the front end surface is in contact with the front end cover, and the rear end surface is in contact with the rear end cover; The outer surface of the housing is also provided with the junction box, which is used to lead out the wiring of the stator assembly; The rotor assembly is coaxially arranged with the stator assembly through the bearing, and the stator assembly is sleeved on the outer surface of the rotor assembly.

[0008] Preferably, the explosion-proof housing specifically includes: the casing of the explosion-proof motor, the casing of the differential, and the casing of the planetary reducer.

[0009] Preferably, the rotor assembly comprises: a rotor and an output shaft; The output shaft is supported by the bearings and arranged on the front end surface and the rear end surface; The output shaft is fixedly arranged with the rotor; The rotor is rotatably arranged inside the stator assembly by rotating through the bearing.

[0010] Preferably, the output shaft is a hollow shaft, and the transmission shaft is coaxially arranged with the output shaft and penetrates the center of the rotor.

[0011] Preferably, the explosion-proof power device also includes a speed detection device arranged on the output shaft to detect the rotational speed of the output shaft.

[0012] Preferably, the output shaft is provided at both ends of the rotor.

[0013] Preferably, the speed detection device and the differential are respectively arranged on the output shafts at both ends of the rotor.

[0014] Preferably, the explosion-proof power device further includes a controller, which is electrically connected to the speed detection device for adjusting the rotational speed of the rotor assembly.

[0015] Preferably, a brake disc is also provided on one end of the differential to brake the rotor assembly.

[0016] Compared with the prior art, the explosion-proof power device provided by the technical solution, the power device of the present invention, by arranging the transmission shaft and the planetary reducer coaxially and arranging them together with the differential, under the entire explosion-proof shell wrapping setting, improves the vehicle integration during the design process of the explosion-proof forklift and realizes the spatial layout of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a three-dimensional schematic diagram of an explosion-proof power device in a specific embodiment; Figure 2 It is a front view of an explosion-proof power device; Figure 3 is a cross-sectional view of an explosion-proof power device; Figure 4 This is a cross-sectional view of an explosion-proof motor; Figure 5 A cross-sectional view of the rotor assembly.

[0019] The specific figures are: 1. Explosion-proof motor; 2. Differential; 3. Planetary reducer; 4. Drive shaft; 5. Explosion-proof casing; 6. Casing; 7. Front cover; 8. Rear cover; 9. Rotor assembly; 10. Stator assembly; 11. Junction box 12. Bearing; 13. Rotor; 14. Output shaft; 15. Speed ​​detection device. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0024] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0025] Please refer to Figures 1 to 5 , a specific explosion-proof power device is described for the technical solution of the present invention, the structure of the explosion-proof power device includes: an explosion-proof motor 1, a differential 2, a planetary reducer 3, a transmission shaft 4, and an explosion-proof housing 5; like Figures 1 to 3 As shown, in this embodiment, the overall layout of the explosion-proof power device is arranged along the axis of the explosion-proof motor 1. Specifically, Figure 2 As shown, the output shaft of the explosion-proof motor 1 is connected to the transmission shaft 4 through the differential 2; In particular, such as Figures 1 to 3 As shown, in this embodiment, the planetary reducers 3 are arranged at both ends of the transmission shaft 4, the planetary reducers 3 arranged at both ends are coaxially arranged with the axis of the transmission shaft 4, and the transmission shaft 4 runs through the explosion-proof motor 1, which has a higher degree of integration compared to the split drive axle structure in the prior art; The power output by the explosion-proof motor 1 is differentially transmitted by the differential 2 and then transmitted to the planetary reducers 3 at both ends by the transmission shaft 4, so as to realize power transmission and enable the vehicle to move; Due to the particularity of the working environment, all important parts of the explosion-proof power device must be isolated from the external environment during operation to prevent external explosive substances from entering the internal mechanical structure and causing combustion or explosion, and transferring energy to the inside of the device to cause an explosion. Therefore, in this embodiment, the explosion-proof housing 5 is connected by a detachable connection structure, specifically a bolt connection structure, to accommodate the explosion-proof motor 1, the differential 2, the planetary reducer 3, and the drive shaft 4 inside to isolate them from the external environment and ensure the safe operation of the explosion-proof power device.

[0026] As a preferred example, Figure 4 As shown, the specific structure of the explosion-proof motor 1 in this embodiment includes: a housing 6, a front cover 7, a rear cover 8, a rotor assembly 9, a stator assembly 10, a junction box, and a bearing; The connection relationship is: the housing 6 and the front cover 7 and the rear cover 8 are combined to form a closed space for arranging the stator assembly 10. In order to ensure the airtightness of the interior of the explosion-proof motor 1, a sealing device is provided on the flameproof joint surface at the connection between the housing 6 and the front cover 7 and the rear cover 8. The length and gap of the joint surface position meet the explosion-proof requirements to ensure the safety of the rotor assembly 9 and the stator assembly 10 inside; In this example, the stator assembly 10 is installed in the housing 6 by press-fitting, with the side surface being in contact with the housing 6, the front end surface being in contact with the front end cover 7, and the rear end surface being in contact with the rear end cover 8; The outer surface of the housing 6 is also provided with the junction box, which is used to lead out the wiring of the stator assembly 10, and the top cover of the junction box is also provided with a flameproof joint surface; The rotor assembly 9 is coaxially arranged with the stator assembly 10 through the bearing, and the stator assembly 10 is sleeved on the outer surface of the rotor assembly 9. When powered on, the stator assembly 10 drives the rotor assembly 9 to rotate through electromagnetic force, thereby converting electrical energy into kinetic energy.

[0027] Better, such as Figure 1 As shown, in this embodiment, the explosion-proof housing 5 specifically includes: the housing 6 of the explosion-proof motor 1, the housing of the differential 2, and the housing of the planetary reducer 3, which are combined and connected under the action of bolt connection to form a housing structure for protecting the explosion-proof power device, providing reliable safety protection for the explosion-proof forklift.

[0028] As a preferred example, Figure 5 As shown, the rotor assembly 9 includes: a rotor and an output shaft; The connection relationship is: the output shaft is supported by the bearing and arranged on the front end surface and the rear end surface; The output shaft is fixedly arranged with the rotor, and the rotor is rotatably arranged inside the stator assembly 10 by rotating through the bearing. Since the output shaft is fixedly arranged with the rotor, the rotor can synchronously drive the output shaft to rotate when driven by electromagnetic force, thereby transmitting power to the differential 2 for differential.

[0029] Further, such as Figure 3 As shown, in order to integrate the integration of the explosion-proof device to a greater extent, in this embodiment, the output shaft is a hollow shaft structure, and the transmission shaft 4 is coaxially arranged with the output shaft and penetrates the center of the rotor, thereby avoiding the need to open a channel structure for the transmission shaft 4 to pass through, greatly improving space utilization and enhancing the overall integration of the explosion-proof power device.

[0030] Preferably, the explosion-proof power device further comprises a speed detection device disposed on the output shaft for detecting the rotation speed of the output shaft, specifically as follows Figure 3 As shown, in this embodiment, the speed detection device is sleeved on the outer surface of the output shaft to perform rotation speed detection.

[0031] Furthermore, in order to better cooperate with the through-going arrangement of the transmission shaft 4, the output shaft is arranged at both ends of the rotor.

[0032] Furthermore, by designing that the output shaft is provided at both ends of the rotor, the differential 2 and the speed detector connected to the output shaft can be respectively provided on the output shaft at both ends of the rotor, avoiding being uniformly provided on the output shaft on the same side, thereby performing a rational structural optimization setting in the diameter direction.

[0033] Preferably, the explosion-proof power device also includes a controller, which is electrically connected to the speed detection device for adjusting the rotational speed of the rotor assembly 9, thereby achieving controllable movement of the rotor assembly 9 and enabling the explosion-proof motor 1 to output power according to required characteristics.

[0034] Preferably, in order to better ensure the operation of the explosion-proof power device, a brake disc is also provided at one end of the differential 2, and the transmission shaft 4 stops moving under the transmission effect of the hydraulic oil pushing the brake pressure disc, thereby achieving vehicle braking. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed in this article.

Claims

1. An explosion-proof power device, characterized in that: include: Explosion-proof motor (1), differential (2), planetary reducer (3), transmission shaft (4), explosion-proof housing (5); The output shaft of the explosion-proof motor (1) is connected to the transmission shaft (4) via the differential (2); The planetary reducers (3) are arranged at both ends of the transmission shaft (4), the planetary reducers (3) at both ends are arranged coaxially with the axis of the transmission shaft (4), and the transmission shaft (4) passes through the explosion-proof motor (1); The power output by the explosion-proof motor (1) is differentially driven by the differential (2) and then transmitted to the planetary reducers (3) at both ends by the transmission shaft (4); The explosion-proof housing (5) accommodates the explosion-proof motor (1), the differential (2), the planetary reducer (3), and the transmission shaft (4) inside through a detachable connection structure, so as to isolate them from the external environment.

2. The explosion-proof power device according to claim 1, characterized in that: The specific structure of the explosion-proof motor (1) comprises: a housing (6), a front cover (7), a rear cover (8), a rotor assembly (9), a stator assembly (10), a junction box, and a bearing; The housing (6), the front end cover (7) and the rear end cover (8) are combined to form a closed space for arranging the stator assembly (10); The side surface of the stator assembly (10) is in contact with the housing (6), the front end surface is in contact with the front end cover (7), and the rear end surface is in contact with the rear end cover (8); The outer surface of the housing (6) is also provided with a junction box, and the junction box is used to lead out the wiring of the stator assembly (10); The rotor assembly (9) is coaxially arranged with the stator assembly (10) via the bearing, and the stator assembly (10) is sleeved on the outer surface of the rotor assembly (9).

3. The explosion-proof power device according to claim 2, characterized in that: The explosion-proof housing (5) specifically comprises: the housing (6) of the explosion-proof motor (1), the housing of the differential (2), and the housing of the planetary reducer (3).

4. The explosion-proof power device according to claim 2, characterized in that: The rotor assembly (9) comprises: a rotor and an output shaft; The output shaft is supported by the bearings and arranged on the front end surface and the rear end surface; The output shaft is fixedly arranged with the rotor; The rotor is rotatably arranged inside the stator assembly (10) by rotating through the bearing.

5. The explosion-proof power device according to claim 4, characterized in that: The output shaft is a hollow shaft, and the transmission shaft (4) is coaxially arranged with the output shaft and penetrates the center of the rotor.

6. The explosion-proof power device according to claim 5, characterized in that: The explosion-proof power device also includes a speed detection device arranged on the output shaft, for detecting the rotation speed of the output shaft.

7. The explosion-proof power device according to claim 6, characterized in that: The output shaft is disposed at both ends of the rotor.

8. The explosion-proof power device according to claim 7, characterized in that: The speed detection device and the differential (2) are respectively arranged on the output shaft at both ends of the rotor.

9. The explosion-proof power device according to claim 8, characterized in that: The explosion-proof power device also includes a controller, which is electrically connected to the speed detection device and is used to adjust the rotation speed of the rotor assembly (9).

10. The explosion-proof power device according to any one of claims 2 to 9, characterized in that: A brake disc is also provided on one end of the differential (2) and is connected to the differential so as to brake the rotor assembly (9).

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