A quick-change battery box device and an explosion-proof electric vehicle for mining using the same device.

Abstract

This invention belongs to the technical field of explosion-proof electric mining vehicles, specifically relating to a quick-change battery box device and an explosion-proof mining electric vehicle using the same. The invention includes a receiving cavity located below the battery box of the explosion-proof mining electric vehicle to house the quick-change battery device, at least one set of lifting cylinders installed within the receiving cavity, an n-shaped quick-change bracket rotatably connected to the output end of the lifting cylinders, a lifting mechanism rotatably mounted on the n-shaped quick-change bracket, and a lifting device connected to the lifting mechanism for clamping the battery box. By mounting the quick-change battery box device on the body of the explosion-proof mining electric vehicle, battery box replacement can be achieved without additional equipment. The inclined lifting cylinders provide power to the quick-change battery device, and the n-shaped quick-change bracket is rotatably mounted on the body of the explosion-proof mining electric vehicle. During battery box replacement, the space occupied is small, no other equipment is required, and the replacement is quick and convenient.

Description

Technical Field

[0001] This invention belongs to the technical field of explosion-proof electric vehicles for mining, specifically relating to a quick-change battery box device and an explosion-proof electric vehicle for mining that uses the same. Background Technology

[0002] In response to the requirements of low pollution, low noise, and low fuel consumption for coal mine underground equipment, and with the technological development of power batteries, pure electric battery-powered explosion-proof electric vehicles for mining will be of great significance in improving the working environment and health of underground workers.

[0003] Mining explosion-proof electric vehicles (such as explosion-proof electric loaders) are powered by batteries. Due to the limited lifespan of batteries, they cannot operate continuously. Therefore, it is necessary to replace the battery boxes of mining explosion-proof electric vehicles underground. Currently, the devices used to replace the battery boxes of explosion-proof battery loaders mostly involve using a crane or hoisting equipment to move the battery box to be replaced to the battery replacement location, where the battery box is replaced manually. The replaced battery box is then placed at a charging station for charging. Replacing the battery box underground requires the installation of additional equipment, and the limited space underground makes the process extremely troublesome. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies where replacing the battery box of an explosion-proof electric vehicle used in underground mining is quite troublesome. This invention provides a quick-change battery box device that is suitable for smaller spaces and allows for simple and rapid battery box replacement, as well as an explosion-proof electric vehicle using the same device.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a battery box quick-change device, including a receiving cavity for accommodating the battery quick-change device, at least one set of lifting cylinders rotatably installed in the receiving cavity, an n-shaped quick-change bracket rotatably connected to the output end of the lifting cylinders, a lifting mechanism rotatably installed on the n-shaped quick-change bracket, and a lifting device for clamping the battery box connected to the lifting mechanism.

[0006] The n-shaped quick-change bracket includes a mounting arm for rotatably mounting to the explosion-proof mining electric vehicle and an operating arm for rotatably connecting to the lifting mechanism; the end of the mounting arm is rotatably connected to the upper end plate of the explosion-proof mining electric vehicle; the output end of the lifting cylinder is rotatably connected to the mounting arm.

[0007] When the battery box is in the installation state, the lifting cylinder drives the operating arm to be in the horizontal direction and accommodated in the receiving cavity; when the battery box is removed and placed on the ground or charging platform, the lifting cylinder drives the operating arm to be in the vertical direction.

[0008] Furthermore, the lifting cylinders are a set, and the output end of the lifting cylinder is rotatably mounted in the middle position of the mounting arm.

[0009] Furthermore, the lifting cylinders are in two sets, with the output ends of the two lifting cylinders symmetrically rotated and mounted on both sides of the mounting arm.

[0010] Furthermore, the lifting mechanism includes a lifting cylinder rotatably mounted on the operating arm of the n-shaped quick-change bracket via a pin, and a lifting chain rotatably mounted on the output end of the lifting cylinder; the end of the operating arm is provided with a guide wheel for cooperating with the lifting chain for guidance.

[0011] Furthermore, the lifting device includes a lifting arm connected to the lifting chain and a connecting mechanism symmetrically sleeved at both ends of the lifting arm for fixed connection with the battery box;

[0012] The connecting mechanism includes an elliptical collar sleeved on the lifting arm and at least two sets of lifting chains installed on the elliptical collar; the battery box is provided with a lifting ring that cooperates with the lifting chains.

[0013] Furthermore, the lifting arm has multiple symmetrically provided positioning grooves at both ends for fitting the elliptical collar, and the major diameter of the elliptical collar is greater than the height H of the lifting arm corresponding to the positioning groove.

[0014] Furthermore, the fixed end of the lifting cylinder is rotatably mounted on the inner wall at the front end of the receiving cavity.

[0015] A mining explosion-proof electric vehicle includes the aforementioned battery box quick-change device.

[0016] Furthermore, it also includes a rear frame for mounting the battery box, a receiving cavity opened inside the rear frame for accommodating the battery box quick-change device, and an upper end plate disposed on the rear frame; the end of the mounting arm of the n-shaped quick-change bracket is rotatably connected to the upper end plate by a pin.

[0017] Furthermore, the battery box of the explosion-proof electric mining vehicle is equipped with at least two rotary torsion locks for positioning and installation with the rear frame, and the rotary torsion locks are connected in conjunction with the mounting plate of the rear frame.

[0018] The beneficial effects of the battery box quick-change device of the present invention and the explosion-proof electric vehicle for mining using the same are as follows:

[0019] 1. This invention installs a quick-change battery box device on the body of an explosion-proof mining electric vehicle, enabling battery box replacement without the need for additional cranes or lifting equipment. Simultaneously, an inclined lifting cylinder provides power to the quick-change battery device. The n-shaped quick-change bracket is rotatably mounted on the body of the explosion-proof mining electric vehicle. During battery box replacement, it occupies minimal space, requires no additional equipment, and is quick and convenient.

[0020] 2. The battery box quick-change device of the present invention has multiple positioning grooves on the lifting arm for setting the lifting chain. Different positioning grooves can be selected according to the size of the battery box, thereby enhancing the applicability of the battery box quick-change device to different mining explosion-proof electric vehicles.

[0021] 3. When the battery is not being replaced, the mounting arm of the n-shaped quick-change bracket of the present invention is horizontally positioned inside the receiving cavity of the explosion-proof mining electric vehicle. This does not occupy space outside the explosion-proof mining electric vehicle without interfering with the normal installation and use of the battery box. At the same time, a guide wheel is provided at the end of the operating arm of the n-shaped quick-change bracket, so that the lifting force of the lifting mechanism on the battery box is always in the vertical upward direction. This ensures that the battery box is under balanced force when it rotates from the vertical direction to the horizontal direction with the operating arm, thus avoiding safety accidents caused by unbalanced force on the battery box. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a perspective view of the mine explosion-proof electric vehicle battery box being replaced according to an embodiment of the present invention;

[0024] Figure 2 This is a plan view of the mine explosion-proof electric vehicle battery box when it is replaced according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the battery box quick-change device in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the lifting device in an embodiment of the present invention;

[0027] Figure 5 The above Figure 2 Detailed image of point A in the middle

[0028] Figure 6 This is a perspective view of the explosion-proof electric vehicle battery box in a mining application according to an embodiment of the present invention.

[0029] Figure 7 This is a plan view of the explosion-proof electric vehicle battery box in a mining application according to an embodiment of the present invention.

[0030] In the diagram: 1. Rear frame, 11. Mounting plate, 3. Upper end plate, 4. Battery box, 5. Rotary torsion lock, 61. Receiving cavity, 62. Lifting cylinder, 63. N-shaped quick-change bracket, 631. Mounting arm, 632. Operating arm, 64. Lifting mechanism, 641. Lifting cylinder, 642. Lifting chain, 643. Guide wheel, 65. Lifting device, 651. Lifting arm, 652. Connecting mechanism, 6521. Elliptical collar, 6522. Lifting chain, 6523. Lifting ring, 6524. Positioning groove. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0032] It should be noted that the terms "front", "rear", "above", and "below" mentioned in this invention refer to the front of the mining explosion-proof electric vehicle when it is normally parked, with the rear of the vehicle as the front, the top of the vehicle as the rear, and the bottom of the vehicle as the bottom.

[0033] Example 1

[0034] like Figures 1-7 The specific embodiment of the quick-change device for the battery box 4 shown in the present invention includes a receiving cavity 61 opened below the battery box 4 of the mining explosion-proof electric vehicle for accommodating the quick-change device, at least one set of lifting cylinders 62 rotatably installed in the receiving cavity 61, an n-shaped quick-change bracket 63 rotatably connected to the output end of the lifting cylinders 62, a lifting mechanism 64 rotatably installed on the n-shaped quick-change bracket 63, and a lifting device 65 connected to the lifting mechanism 64 for clamping the battery box 4.

[0035] The n-shaped quick-change bracket 63 includes a mounting arm 631 for rotatable installation with the explosion-proof mining electric vehicle and an operating arm 632 for rotatable connection with the lifting mechanism 64. The end of the mounting arm 631 is rotatably connected to the upper end plate 3 of the explosion-proof mining electric vehicle via a pin. The output end of the lifting cylinder 62 is rotatably connected to the mounting arm 631. The lifting cylinder 62 is tilted. When the battery box 4 is in the installation state, the lifting cylinder 62 drives the operating arm 632 to be in the horizontal direction and accommodated in the receiving cavity 61. When the battery box 4 is removed and placed on the ground or charging platform, the lifting cylinder 62 drives the operating arm 632 to be in the vertical direction.

[0036] This invention integrates a quick-change battery box 4 device onto the body of a mining explosion-proof electric vehicle. This eliminates the need for additional overhead cranes or lifting equipment, allowing for the replacement of the battery box 4 on the mining explosion-proof electric vehicle. Simultaneously, an inclined lifting cylinder 62 provides power to the quick-change battery device of this invention. An n-shaped quick-change bracket 63 is rotatably mounted on the body of the mining explosion-proof electric vehicle. During the replacement of the battery box 4, the space occupied is small, no other equipment is required, and the replacement is quick and convenient.

[0037] When the battery box 4 quick-change device of the present invention is not used for battery replacement, the mounting arm 631 of the n-shaped quick-change bracket 63 is horizontally set in the receiving cavity 61 of the mining explosion-proof electric vehicle. Without interfering with the normal installation and use of the battery box 4, it does not occupy space other than the mining explosion-proof electric vehicle. It further solves the problem that the process of replacing the battery box 4 in the mine is extremely troublesome due to the limited space in the mine.

[0038] To further explain, the lifting cylinders 62 are a set, with the output end of the lifting cylinder 62 rotatably mounted in the middle position of the mounting arm 631, or there are two sets of lifting cylinders 62, with the output ends of the two lifting cylinders 62 symmetrically rotatably mounted on both sides of the mounting arm 631, to ensure that the lifting cylinders 62 are subjected to balanced forces when the n-shaped quick-change bracket 63 rotates around the end of the mounting arm 631. In this first embodiment, there are two sets of lifting cylinders 62.

[0039] Reference Figures 1-4 The lifting mechanism 64 in this embodiment includes a lifting cylinder 641 rotatably mounted on an operating arm 632 of an n-shaped quick-change bracket 63 via a pin, and a lifting chain 642 rotatably mounted on the output end of the lifting cylinder 641. A guide wheel 643 is provided at the end of the operating arm 632 to guide the lifting chain 642. The guide wheel 643 at the end of the operating arm 632 of the n-shaped quick-change bracket 63 ensures that the lifting force exerted by the lifting mechanism 64 on the battery box 4 is always vertically upward. This guarantees that the battery box 4 is balanced when rotating from a vertical to a horizontal position along with the operating arm 632, preventing safety accidents caused by unbalanced forces on the battery box 4.

[0040] In this first embodiment, the lifting device 65 includes a lifting arm 651 connected to the lifting chain 642 and connecting mechanisms 652 symmetrically sleeved at both ends of the lifting arm 651 for fixed connection with the battery box 4. See details below. Figures 2-4The connecting mechanism 652 includes an elliptical collar 6521 fitted onto the lifting arm 651 and at least two sets of lifting chains 6522 mounted on the elliptical collar 6521. The battery box 4 is provided with lifting rings 6523 that cooperate with the lifting chains 6522. Multiple positioning grooves 6524 for fitting the elliptical collar 6521 are symmetrically provided at both ends of the lifting arm 651. The major diameter of the elliptical collar 6521 is greater than the height H of the lifting arm 651 corresponding to the positioning groove 6524, as shown in Figure 5.

[0041] The quick-change device for the battery box 4 of the present invention has multiple positioning grooves 6524 on the lifting arm 651 for setting the lifting chain 6522. Different positioning grooves 6524 can be selected according to the size of the battery box 4, enhancing the applicability of the quick-change device for different mining explosion-proof electric vehicles. The long diameter of the elliptical collar 6521 is larger than the height H of the lifting arm 651 corresponding to the positioning groove 6524, which facilitates the fitting of the elliptical collar 6521 onto the positioning groove 6524. The groove of the positioning groove 6524 ensures that the elliptical collar 6521 does not fall off the lifting arm 651 during the lifting of the battery box 4.

[0042] Example 2

[0043] Specific implementation examples of explosion-proof mining electric vehicles including the aforementioned battery box 4 quick-change device. Figure 1-7 As shown, the explosion-proof electric vehicle for mining includes a rear frame 1 for mounting the battery box 4, a receiving cavity 61 opened inside the rear frame 1 for accommodating the quick-change device of the battery box 4, and an upper end plate 3 set on the rear frame 1; the end of the mounting arm 631 of the n-shaped quick-change bracket 63 is rotatably connected to the upper end plate 3 by a pin.

[0044] The lifting cylinder 62 is rotatably connected to the rear frame 1 on the inner wall of the front end of the receiving cavity 61 via a pin. The output end of the lifting cylinder 62 is rotatably connected to the n-shaped quick-change bracket 63 via a pin. The end of the mounting arm 631 of the n-shaped quick-change bracket 63 is rotatably connected to the upper end plate 3 on the rear frame 1 via a pin. The inclined lifting cylinder 62 drives the n-shaped quick-change bracket 63 to rotate around the pin at the end of the mounting arm 631. When the battery box 4 is in the installation state, the lifting cylinder 62 drives the operating arm 632 to be in the horizontal direction and accommodated in the receiving cavity 61, so that the operating arm 632 does not interfere with the battery box 4. When the battery box 4 is removed and placed on the ground or charging platform, the lifting cylinder 62 drives the operating arm 632 to be in the vertical direction, so that the battery box 4 can be moved from the rear frame 1 to the ground or charging platform.

[0045] The lifting cylinder 641 in the lifting mechanism 64 drives the lifting chain 642 to extend or retract, thereby lifting the lifting device 65. The lifting chain 6522 of the lifting device 65 is connected to the lifting ring 6523 on the battery box 4, thus lifting the battery box 4. It should be noted that the battery box 4 of the mining explosion-proof electric vehicle is equipped with at least two rotary torsion locks 5 for positioning and installation with the rear frame 1. The rotary torsion locks 5 are connected to the mounting plate 11 of the rear frame 1. In this second embodiment, there are four rotary torsion locks 5, symmetrically arranged on the side of the battery box 4 that mates with the mounting plate 11.

[0046] The replacement procedure for the battery box 4 of the explosion-proof electric vehicle for mining in this invention is as follows:

[0047] Rotate the rotary torsion lock 5 to open it, and start the lifting cylinder 641 to retract. The lifting cylinder 641 drives the lifting chain 642 to lift the battery box 4 to a certain height along the guide wheel 643. Then, start the lifting cylinder 62 to extend it. The output end of the lifting cylinder 62 pushes the n-shaped quick-change bracket 63 to rotate along the pin at the end of the mounting arm 631. The n-shaped quick-change bracket 63 drives the battery box 4 to slowly move away from the rear and below of the mining explosion-proof electric vehicle along a certain trajectory. The battery box 4 falls to the designated ground or above the charging platform. At this time, start the lifting cylinder 641 to extend and slowly lower the battery box 4. Finally, remove the lifting chain 6522 from the lifting arm 651 to complete the replacement of the battery box 4.

[0048] The replacement procedure for the battery box 4 of the explosion-proof electric vehicle for mining in this invention is as follows:

[0049] After connecting the lifting ring 6523 of the fully charged battery box 4 to the lifting chain 6522, the elliptical collar 6521 is hooked into the positioning groove 6524 of the lifting arm 651. The lifting cylinder 641 is activated to retract, and the lifting chain 642 lifts the battery box 4 to a certain height along the guide wheel 643. Then, the lifting cylinder 62 is activated to retract, pulling the n-shaped quick-change bracket 63 to rotate along the pin axis at the end of the mounting arm 631 towards the front of the mining explosion-proof electric vehicle, thereby driving the battery box 4 to move slowly forward and upward along a certain trajectory. The battery box 4 falls above the rear frame 1. At this time, the lifting cylinder 641 is activated to extend and slowly place the battery box 4 on the mounting plate 11 on the rear frame 1. Finally, the rotary torsion lock 5 is rotated to lock it, completing the battery box 4 replacement operation.

[0050] This invention lifts the battery box 4 using a lifting cylinder 641, and then flips the n-shaped quick-change bracket 63 using an inclined lifting cylinder 62, thereby causing the battery box 4 to fall onto the rear frame 1 along a certain trajectory. This enables the rapid replacement of the battery box 4 of the mine explosion-proof electric vehicle, solving the problem of not being able to replace the battery box 4 in underground coal mines where there is no traveling vehicle or lifting equipment. At the same time, replacing the battery box 4 is quick and convenient, and the replacement process requires little space, making it highly valuable for promotion.

[0051] It should be understood that the specific embodiments described above are for illustrative purposes only and are not intended to limit the scope of the invention. Obvious variations or modifications derived from the spirit of the invention are still within the protection scope of the invention.

Claims

1. A mine explosion-proof electric vehicle, characterized in that: It includes a battery box quick-change device, a rear frame (1) for mounting the battery box (4), a receiving cavity (61) opened inside the rear frame (1) for accommodating the battery box quick-change device, and an upper end plate (3) provided on the rear frame (1). The battery box quick-change device includes a receiving cavity (61) for accommodating the battery quick-change device, at least one set of lifting cylinders (62) rotatably installed in the receiving cavity (61), an n-shaped quick-change bracket (63) rotatably connected to the output end of the lifting cylinders (62), a lifting mechanism (64) rotatably installed on the n-shaped quick-change bracket (63), and a lifting device (65) connected to the lifting mechanism (64) for clamping the battery box (4). The end of the mounting arm (631) of the n-shaped quick-change bracket (63) is rotatably connected to the upper end plate (3) by a pin. The n-shaped quick-change bracket (63) includes a mounting arm (631) for rotatably mounting to the explosion-proof electric vehicle for mining and an operating arm (632) for rotatably connecting to the lifting mechanism (64); the end of the mounting arm (631) is rotatably connected to the upper end plate (3) of the explosion-proof electric vehicle for mining; the output end of the lifting cylinder (62) is rotatably connected to the mounting arm (631). When the battery box (4) is in the installation state, the lifting cylinder (62) drives the operating arm (632) to be in the horizontal direction and accommodated in the receiving cavity (61); the n-shaped quick-change bracket (63) drives the battery box (4) to move slowly away from the rear and lower part of the mining explosion-proof electric vehicle along a certain trajectory; when the battery box (4) is taken out and placed on the ground or charging platform, the lifting cylinder (62) drives the operating arm (632) to be in the vertical direction; The lifting mechanism (64) includes a lifting cylinder (641) rotatably mounted on the operating arm (632) of the n-shaped quick-change bracket (63) via a pin, and a lifting chain (642) rotatably mounted on the output end of the lifting cylinder (641); the end of the operating arm (632) is provided with a guide wheel (643) for cooperating with the lifting chain (642) for guidance. The lifting force of the lifting mechanism (64) on the battery box (4) is always in the vertical upward direction. When the battery box (4) rotates from the vertical direction to the horizontal direction with the operating arm (632), the battery box (4) is in force balance.

2. The explosion-proof electric vehicle for mining according to claim 1, characterized in that: The lifting cylinders (62) are a set, and the output end of the lifting cylinders (62) is rotatably installed in the middle position of the mounting arm (631).

3. The explosion-proof electric vehicle for mining according to claim 1, characterized in that: The lifting cylinders (62) are in two sets, and the output ends of the two lifting cylinders (62) are symmetrically rotated and installed on both sides of the mounting arm (631).

4. The explosion-proof electric vehicle for mining according to claim 1, characterized in that: The lifting device (65) includes a lifting arm (651) connected to the lifting chain (642) and a connecting mechanism (652) symmetrically sleeved at both ends of the lifting arm (651) for fixed connection with the battery box (4). The connecting mechanism (652) includes an elliptical collar (6521) sleeved on the lifting arm (651) and at least two sets of lifting chains (6522) installed on the elliptical collar (6521); the battery box (4) is provided with a lifting ring (6523) that cooperates with the lifting chain (6522).

5. The explosion-proof electric vehicle for mining according to claim 4, characterized in that: The lifting arm (651) has multiple positioning grooves (6524) symmetrically opened at both ends for fitting the elliptical collar (6521). The long diameter of the elliptical collar (6521) is greater than the height H of the lifting arm (651) corresponding to the positioning groove (6524).

6. The explosion-proof electric vehicle for mining according to claim 1, characterized in that: The fixed end of the lifting cylinder (62) is rotatably mounted on the inner wall of the front end of the receiving cavity (61).

7. The explosion-proof electric vehicle for mining according to claim 1, characterized in that: The battery box (4) of the mining explosion-proof electric vehicle is provided with at least two rotary torsion locks (5) for positioning and installation with the rear frame (1). The rotary torsion locks (5) are connected to the mounting plate (11) of the rear frame (1).

8. The explosion-proof electric vehicle for mining according to claim 1, characterized in that, The method for replacing / installing the battery box (4) is as follows: The method for replacing the battery box (4) includes the following: The lifting cylinder (62) is activated to extend, and the output end of the lifting cylinder (62) pushes the n-shaped quick-change bracket (63) to rotate along the pin at the end of the mounting arm (631); The n-shaped quick-change bracket (63) drives the battery box (4) to move slowly away from the rear and below of the mining explosion-proof electric vehicle along a certain trajectory. The battery box (4) falls to the designated ground or above the charging platform. At this time, the lifting cylinder (641) is activated to extend and slowly lower the battery box (4) to complete the replacement of the battery box (4). The battery box (4) replacement method includes the following: The lifting cylinder (641) is activated to retract, and the lifting chain (642) lifts the battery box (4) to a certain height along the guide wheel (643); Start the lifting cylinder (62) to retract, pull the n-shaped quick-change bracket (63) to rotate along the pin axis at the end of the mounting arm (631) to the front of the mine explosion-proof electric vehicle, thereby driving the battery box (4) to move slowly forward and upward along a certain trajectory. The battery box (4) falls above the rear frame 1. At this time, start the lifting cylinder (641) to extend and slowly place the battery box (4) on the rear frame (1) to complete the replacement of the battery box (4).

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