Replaceable hydrogen supply device and fuel cell forklift

Abstract

The invention relates to the technical field of fuel cell forklifts, and discloses a replaceable hydrogen supply device and a fuel cell forklift, the replaceable hydrogen supply device comprises a rack and a box body detachably mounted on the rack; at least one hydrogen bottle is arranged in the box body, and the hydrogen bottle is used for providing hydrogen for the fuel cell system; the two ends of the box body extend upwards to be provided with hanging plates respectively, a plurality of hanging rings are arranged on the sides, deviating from each other, of the two hanging plates, and the hanging rings are used for hoisting the box body. The multiple hydrogen cylinders are arranged in the box body, other hydrogen cylinders in the box body can be replaced in time after gas of one hydrogen cylinder is used up, the gas exchange time is greatly saved, the working efficiency of the fuel cell forklift is improved, on the other hand, the box body only needs to be lifted away from the fuel cell forklift through the lifting ring, then the box body is replaced with a new box body, and the cost is reduced. And the fuel cell forklift can be immediately put into use, so that the problem of difficulty in ventilation of the fuel cell forklift at present is solved.

Description

Technical Field

[0001] The invention relates to the field of fuel cell forklifts, and in particular to a replaceable hydrogen supply device and a fuel cell forklift. Background Art

[0002] A fuel cell forklift is a forklift that uses a fuel cell as a power source. With the increasing global awareness of environmental protection and the pursuit of sustainable development, fuel cell forklifts, as a clean and efficient energy solution, have an increasingly broad market prospect. At the same time, with the continuous improvement of the industrial chain and the continuous advancement of technology, fuel cell forklifts are also expected to become one of the important development trends in the forklift industry.

[0003] At present, fuel cell forklifts are mainly used in factories. Since most factories cannot set up hydrogen refueling stations and fuel cell forklifts are not allowed to leave the factory, if the forklift needs to be inflated, the hydrogen bottles in the fuel cell forklift need to be disassembled and transported to the hydrogen refueling station for inflating, which seriously affects the ventilation efficiency of the fuel cell forklift, thereby greatly affecting the working efficiency of the fuel cell forklift. Summary of the invention

[0004] The present invention aims to solve the above problems and provides a replaceable hydrogen supply device and a fuel cell forklift, so as to solve the problems of inconvenient ventilation and low efficiency of existing fuel cell forklifts.

[0005] To achieve this object, the present invention adopts the following technical solutions: A replaceable hydrogen supply device, comprising: A stand and a box detachably mounted on the stand; At least one hydrogen bottle is installed in the box, and the hydrogen bottle is used to provide hydrogen for the fuel cell system; Both ends of the box body are respectively provided with hanging plates extending upward, and a plurality of hanging rings are provided on the opposite sides of the two hanging plates, and the hanging rings are used to lift the box body.

[0006] Preferably, the box also includes: A bracket, disposed in the box; The partition is embedded in the bracket and is used to separate the hydrogen bottles.

[0007] Preferably, it also includes a first fastening device and a second fastening device for fixing the box body; The first fastening device is mounted on the hanging plate, and the second fastening device is mounted on the fuel cell forklift housing outside the box body; The first fastening device is located above the second fastening device, and the first fastening device and the second fastening device are connected via a tightening device.

[0008] Preferably, the first fastening device comprises: A keyhole-shaped slideway installed on the hanging plate; A latch, one end of which is slidably engaged in the slide slot; A V-shaped lock plate, wherein the closed end of the V-shaped lock plate is fixedly connected to the other end of the latch, and a cross bar is connected between the two open ends of the V-shaped lock plate.

[0009] Preferably, the slide groove includes a fixing groove and an unlocking groove; The fixing groove is perpendicular to the top end surface of the box body; The unlocking slot is connected to an end of the fixing slot away from the box body; When the latch is in the fixing groove, the box body is in a locked and fixed state; When the latch is in the unlocking slot, the box body is in an unlocked and released state.

[0010] Preferably, the second fastening device comprises: A base plate, fixedly connected to a forklift housing; The two open ends of the U-shaped buckle are fixedly connected to the base plate, and the closed end is connected to the cross bar through a tightening device.

[0011] Preferably, it further comprises a limiting device for limiting the displacement of the box body, wherein the limiting device is arranged around the box body, and the bottom of the limiting device is fixedly connected to the stand.

[0012] Preferably, the limiting device comprises a wedge-shaped column; One end of the wedge-shaped column away from the box is fixedly connected to the stand; The end of the wedge-shaped column close to the box body is provided with an inclined guide surface; The angle between the inclined guide surface and the side surface of the box body is an acute angle; The end of the inclined guide surface close to the box body is vertically extended downward to be provided with a clamping surface.

[0013] Preferably, the box also includes: A plurality of openings are arranged at equal intervals on the top of the box; Two support plates which are separated from each other are respectively arranged on the top of the box body along the length direction of both sides of the opening; A plurality of bent plates are connected to the top of the support plate at equal intervals; A plurality of exhaust ports are arranged between two adjacent bent plates at equal intervals along the length direction of the support plate; A top plate, the bottom of which is fixedly connected to the bending plate, and the projection area of ​​the top plate on the top of the box body covers the projection areas of the two support plates on the top of the box body; A reinforcing plate, one end of which is connected to the bottom of the top plate and is arranged perpendicular to the top plate, and the other end of which is connected to the top surface of the box body.

[0014] A fuel cell forklift comprises the above-mentioned hydrogen supply device.

[0015] The contribution of the present invention is that by arranging multiple hydrogen bottles in a box, other hydrogen bottles in the box can be replaced in time after the gas in one of the hydrogen bottles is used up, which greatly saves ventilation time and improves the working efficiency of the fuel cell forklift. On the other hand, the fuel cell forklift can be put into use immediately by simply lifting the box away from the fuel cell forklift through the lifting ring and then replacing it with a new box, which solves the pain point of ventilation difficulty currently faced by fuel cell forklifts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the hydrogen supply device of the present invention; Figure 2 It is a schematic diagram of the structure of the bracket and the partition in the box of the present invention; Figure 3 is a schematic structural diagram of a first fastening device and a second fastening device of the present invention; Figure 4 It is a structural schematic diagram of the keyhole-shaped chute of the present invention; Figure 5 It is a schematic structural diagram of the limiting device of the present invention; Figure 6 It is a structural schematic diagram of a box body of the present invention from one viewing angle; Figure 7 It is a schematic diagram of the structure of the top plate, the reinforcing plate, the bending plate and the supporting plate of the present invention; Figure 8 It is a structural schematic diagram of the opening on the support plate of the present invention; Fig. 9 It is a schematic diagram of the structure in which the hydrogen supply device of the present invention is installed on a fuel cell forklift; Wherein: a stand 10, a box 20, a hanging plate 30, a hanging ring 40, a first fastening device 50, a second fastening device 60, and a limiting device 70; Bracket 21, partition 22, opening 23, support plate 24, bending plate 25, exhaust port 26, top plate 27, reinforcing plate 28, slide groove 51, fixing groove 511, unlocking groove 512, latch 52, V-shaped locking plate 53, cross bar 54, base plate 61, U-shaped buckle 62, wedge-shaped column 71, inclined guide surface 72, clamping surface 73. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0019] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1 As shown, a replaceable hydrogen supply device comprises: A stand 10 and a box 20 detachably mounted on the stand 10; At least one hydrogen bottle is installed in the box 20, and the hydrogen bottle is used to provide hydrogen for the fuel cell system; Hanging plates 30 are respectively provided at both ends of the box body 20 and extend upwards. A plurality of lifting rings 40 are provided on opposite sides of the two hanging plates 30 . The lifting rings 40 are used to lift the box body 20 .

[0021] Specifically, the platform 10 is installed behind the cab of the fuel cell forklift, and a detachable box 20 is installed on the top of the platform 10. No less than one hydrogen bottle is arranged in the box 20. Hanging plates 30 are extended upward at both ends of the box 20, and hanging rings 40 are respectively arranged on the opposite sides of the hanging plates 30. In this embodiment, there are two hanging rings 40 on each side. When the hydrogen in the hydrogen bottle is used up, the fuel cell system at the bottom of the fuel cell forklift cannot continue to generate electricity due to lack of hydrogen supply. The fuel cell forklift needs to replace hydrogen, but due to policy It is stipulated that most factory areas cannot directly refuel with hydrogen (fuel cell forklifts are not allowed to leave the factory area). The hydrogen bottles in the fuel cell forklift need to be disassembled and transported to the hydrogen refueling station for refilling, which greatly affects the working efficiency of the fuel cell forklift. The present invention arranges multiple hydrogen bottles in the box 20. When one of the hydrogen bottles runs out of hydrogen, the other hydrogen bottles in the box 20 can be replaced in time (only the outlet pipeline needs to be replaced, and the replacement can be completed in 5-7 minutes), which greatly saves ventilation time and improves the working efficiency of the fuel cell forklift.

[0022] In another embodiment of the present invention, a display and a hydrogen filling interface are further provided on one side of the box 20. The display can timely monitor the remaining amount of each bottle of hydrogen, so as to remind the forklift operator to replace the hydrogen bottles. Further explanation: when all the hydrogen bottles in the box 20 are used up, the box 20 can be lifted away from the fuel cell forklift by the lifting ring 40, and then replaced with a new box 20 (the new box 20 contains pre-filled hydrogen bottles), and the fuel cell forklift can be put into use immediately, which solves the pain point of difficult ventilation currently faced by fuel cell forklifts.

[0023] like Figure 2 As shown, in another embodiment of the present invention, the box 20 further includes: A bracket 21 is disposed in the box 20; The partition 22 is embedded in the bracket 21 and is used to separate the hydrogen bottles.

[0024] The support 21 in the box 20 is used to support the hydrogen bottle. A partition 22 is provided in the support 21, and a hydrogen bottle can be placed on each partition 22 ( Figure 2 There are two hydrogen bottles placed in it. Different numbers of hydrogen bottles can be set according to different needs. The partition 22 is a ring-shaped object to facilitate accommodating the hydrogen bottles, and each partition 22 is installed with a shock-absorbing sponge). Specifically, to ensure that there is no collision between hydrogen bottles, the distance between adjacent hydrogen bottles is not less than 10 cm.

[0025] Further explanation, such as Figure 3 As shown, it also includes a first fastening device 50 and a second fastening device 60 for fixing the box body 20; The first fastening device 50 is installed on the hanging plate 30, and the second fastening device 60 is installed on the fuel cell forklift housing outside the box body 20; The first fastening device 50 is located above the second fastening device 60, and the first fastening device 50 and the second fastening device 60 are connected by a tightening device.

[0026] To further explain, the first fastening device 50 and the second fastening device 60 are both used to stabilize the box body 20 to prevent the box body 20 from shaking. Specifically, the first fastening device 50 is installed on the hanging plate 30. The hanging plate 30 has higher strength than the box body 20 below and will not easily deform. The second fastening device 60 is installed near the two ends of the box body 20, specifically, it is installed on the outer shell of the fuel cell forklift. The first fastening device 50 and the second fastening device 60 are connected by a tightening device (not shown in the figure). The tightening device includes a long strip-shaped object with a contraction function, such as a tightening belt and an elastic rope. The two ends of the tightening device are respectively wrapped around the first fastening device 50 and the second fastening device 60. Under the inward pulling of the tightening device, the hanging plate 30 will apply downward pressure to the box body 20, so that the box body 20 is close to the bracket 21, thereby reducing the shaking of the box body 20 and ensuring the safety of the hydrogen bottle in the box body 20.

[0027] Further explanation, such as Figure 3 As shown, the first fastening device 50 includes: A keyhole-shaped slide groove 51 is installed on the hanging plate 30; A latch 52, one end of which is slidably engaged in the slide slot 51; A V-shaped lock plate 53 , the closed end of which is fixedly connected to the other end of the latch 52 , and a cross bar 54 is connected between the two opening ends 23 of the V-shaped lock plate 53 .

[0028] The latch 52 moves in the slide groove 51, thereby driving the V-shaped lock plate 53 to move. Since a cross bar 54 is connected between the two openings 23 ends of the V-shaped lock plate 53, the cross bar 54 is used to connect with the tightening device. During the movement of the cross bar 54, the tightening device will also be driven to move (generally, the cross bar 54 will only move when the box body 20 needs to be loosened). The tension applied by the tightening device to the cross bar 54 will be transmitted to the hanging plate 30 through the V-shaped lock plate 53, the latch 52 and the keyhole-shaped slide groove 51 in turn. The hanging plate 30 applies downward pressure to the box body 20 to ensure that the box body 20 is tightly pressed on the stand 10.

[0029] Further explanation, such as Figure 4 As shown, the slide slot 51 includes a fixing slot 511 and an unlocking slot 512; The fixing groove 511 and the top end surface of the box body 20 are perpendicular to each other; The unlocking groove 512 is connected to an end of the fixing groove 511 away from the box body 20; When the latch 52 is in the fixing groove 511, the box body 20 is in a locked and fixed state; When the latch 52 is in the unlocking slot 512 , the box body 20 is in an unlocked state.

[0030] The fixing groove 511 is perpendicular to the top end surface of the box body 20, ensuring that the pressure applied by the hanging plate 30 to the box body 20 is vertically downward, and the box body 20 will not be offset. When the fuel cell forklift is running, one end of the pin 52 will always fall into the fixing groove 511, ensuring that the box body 20 is always under downward pressure and will not shake. When the hydrogen bottle or the box body 20 needs to be replaced, the pin 52 can be pulled out by sliding it into the unlocking groove 512, thereby releasing the control of the hanging plate 30 on the box body 20.

[0031] Further explanation, such as Figure 3 As shown, the second fastening device 60 includes: A base plate 61 is fixedly connected to the forklift housing; The U-shaped buckle ring 62 has two opening 23 ends fixedly connected to the base plate 61 and a closed end connected to the cross bar 54 via a tightening device.

[0032] Further description, it also includes a limiting device 70 for limiting the displacement of the box body 20 , the limiting device 70 is arranged around the box body 20 , and the bottom of the limiting device 70 is fixedly connected to the stand 10 .

[0033] The function of the limit device 70 is to further limit the displacement of the box 20 when the fuel cell forklift is running. At the same time, the limit device 70 also plays a guiding role to ensure that the replaced box 20 can accurately fall on the stand 10, further reducing the time for replacing the box 20 and improving the ventilation efficiency of the fuel cell forklift.

[0034] Further explanation, such as Figure 5 As shown, the limiting device 70 includes a wedge-shaped column 71; One end of the wedge-shaped column 71 away from the box 20 is fixedly connected to the stand 10; The end of the wedge-shaped column 71 close to the box body 20 is provided with an inclined guide surface 72; The angle between the inclined guide surface 72 and the side surface of the box body 20 is an acute angle; The end of the inclined guide surface 72 close to the box body 20 is vertically extended downward to form a clamping surface 73 .

[0035] Specifically, the angle between the inclined guide surface 72 and the box body 20 is between 35° and 45°. After the bottom of the box body 20 contacts the inclined guide surface 72, it will move downward along the inclined guide surface 72. When the box body 20 slides to the bottom end of the inclined guide surface 72, it will fall on the designated position of the stand 10. Due to the existence of the clamping surface 73, the four sides of the box body 20 will be tightly attached to the clamping surface 73. The clamping surface 73 further limits the movement of the box body 20 on the stand 10, ensuring that the hydrogen bottle in the box body 20 will not shake at will.

[0036] Further explanation, such as Figure 6-8 As shown, the box body 20 also includes: A plurality of openings 23 are provided at equal intervals on the top of the box body 20; Two support plates 24 that are separated from each other are respectively arranged on the top of the box body 20 along the length direction of both sides of the opening 23; A plurality of bending plates 25 are connected to the top of the support plate 24 at equal intervals; A plurality of exhaust ports 26 are arranged between two adjacent bent plates 25 at equal intervals along the length direction of the support plate 24; A top plate 27, the bottom of which is fixedly connected to the bending plate 25, and the projection area of ​​the top plate 27 on the top of the box body 20 covers the projection areas of the two support plates 24 on the top of the box body 20; The reinforcing plate 28 has one end connected to the bottom of the top plate 27 and is disposed perpendicular to the top plate 27 , and the other end of the reinforcing plate 28 is connected to the top surface of the box body 20 .

[0037] Further explanation: since hydrogen is lighter than air, the hydrogen discharged from the hydrogen bottle will accumulate on the top of the box 20 and be discharged from the opening 23 on the top of the box 20. The openings 23 are arranged at equal intervals to ensure that the hydrogen accumulated on the top of the box 20 can be discharged from different positions, and there will be no local accumulation of hydrogen (only some of the openings 23, support plates 24 and top plates 27 are drawn in the figure. Depending on the different use sites, multiple rows of openings 23, support plates 24 and top plates 27 can be opened on the top of the box 20); The support plate 24 is laid along the length direction of the opening 23. The support plate 24 is used to provide a support point for the top plate 27, and the projection area of ​​the top plate 27 on the top of the box body 20 covers the projection area of ​​the two support plates 24 on the top of the box body 20 (the top plate 27 can cover the exhaust port 26, the support plate 24 and the bending plate 25), ensuring that external rainwater will not enter the box body 20 through the top, so that the fuel cell forklift of the present invention can also operate outdoors on rainy days. Furthermore, a plurality of exhaust ports 26 are provided in the length direction of the support plate 24, so that the hydrogen discharged from the opening 23 can be discharged outward from all directions, so that the hydrogen is not concentrated and discharged upward, and a large amount of hydrogen will not accumulate on the roof in a short period of time.

[0038] like Fig. 9 As shown, a fuel cell forklift includes the above-mentioned hydrogen supply device.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although the present invention is disclosed through the above embodiments, the protection scope of the present invention is not limited thereto. Without departing from the concept of the present invention, any deformation, replacement, etc. made to the above components shall fall within the scope of the claims of the present invention.

Claims

1. A replaceable hydrogen supply device, characterized in that: include: A stand and a box detachably mounted on the stand; At least one hydrogen bottle is installed in the box, and the hydrogen bottle is used to provide hydrogen for the fuel cell system; Both ends of the box body are respectively provided with hanging plates extending upward, and a plurality of hanging rings are provided on the opposite sides of the two hanging plates, and the hanging rings are used to lift the box body.

2. A replaceable hydrogen supply device according to claim 1, characterized in that: The box also includes: A bracket, arranged in the box; The partition is embedded in the bracket and is used to separate the hydrogen bottles.

3. A replaceable hydrogen supply device according to claim 1, characterized in that: Also included are a first fastening device and a second fastening device for fixing the box body; The first fastening device is mounted on the hanging plate, and the second fastening device is mounted on the fuel cell forklift housing outside the box body; The first fastening device is located above the second fastening device, and the first fastening device and the second fastening device are connected via a tightening device.

4. A replaceable hydrogen supply device according to claim 3, characterized in that: The first fastening device comprises: A keyhole-shaped slideway installed on the hanging plate; A latch, one end of which is slidably engaged in the slide slot; A V-shaped lock plate, wherein the closed end of the V-shaped lock plate is fixedly connected to the other end of the latch, and a cross bar is connected between the two open ends of the V-shaped lock plate.

5. A replaceable hydrogen supply device according to claim 4, characterized in that: The slide slot includes a fixing slot and an unlocking slot; The fixing groove is perpendicular to the top end surface of the box body; The unlocking slot is connected to an end of the fixing slot away from the box body; When the latch is in the fixing groove, the box body is in a locked and fixed state; When the latch is in the unlocking slot, the box body is in an unlocked and released state.

6. A replaceable hydrogen supply device according to claim 5, characterized in that: The second fastening device comprises: A base plate, fixedly connected to a forklift housing; The two open ends of the U-shaped buckle are fixedly connected to the base plate, and the closed end is connected to the cross bar through a tightening device.

7. A replaceable hydrogen supply device according to claim 1, characterized in that: It also includes a limiting device for limiting the displacement of the box body. The limiting device is arranged around the box body, and the bottom of the limiting device is fixedly connected to the stand.

8. A replaceable hydrogen supply device according to claim 7, characterized in that: The limiting device comprises a wedge-shaped column; One end of the wedge-shaped column away from the box is fixedly connected to the stand; The end of the wedge-shaped column close to the box body is provided with an inclined guide surface; The angle between the inclined guide surface and the side surface of the box body is an acute angle; The end of the inclined guide surface close to the box body is vertically extended downward to be provided with a clamping surface.

9. A replaceable hydrogen supply device according to claim 1, characterized in that: The box also includes: A plurality of openings are arranged at equal intervals on the top of the box; Two support plates which are separated from each other are respectively arranged on the top of the box body along the length direction of both sides of the opening; A plurality of bent plates are connected to the top of the support plate at equal intervals; A plurality of exhaust ports are arranged between two adjacent bent plates at equal intervals along the length direction of the support plate; A top plate, the bottom of which is fixedly connected to the bending plate, and the projection area of ​​the top plate on the top of the box body covers the projection areas of the two support plates on the top of the box body; A reinforcing plate, one end of which is connected to the bottom of the top plate and is arranged perpendicular to the top plate, and the other end of which is connected to the top surface of the box body.

10. A fuel cell forklift, comprising the hydrogen supply device according to any one of claims 1 to 9.

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