New energy underground mine car with battery quick change mechanism

Abstract

This invention discloses a new energy underground mining vehicle with a battery quick-swap mechanism, belonging to the technical field of underground mining vehicles. The main battery pack is lowered and stored, with guide wheels sliding along the inclined section of the guide groove towards the vertical section, pushing the L-shaped plates on both sides to slide closer together. This causes the horizontal plate to center synchronously, making the end faces of the main battery pack fit and press against the limiting rollers, pushing the main battery pack to the center position of the support frame. This achieves automatic correction and centering of the main battery pack, ensuring precise alignment. During the battery lowering and storage process, the rotating shaft presses the push rod through the connecting rod at the top. The push rod pushes the telescopic piston cylinder in the opposite direction, causing the piston plate inside the support box to drive the pressure plate to press vertically downwards. This ensures that the contact plate at the bottom of the pressure plate precisely and tightly fits and presses against the contact end position at the top of the main battery pack, automatically completing the integrated connection and conduction of the main battery pack's circuit and communication lines. No manual wiring or alignment is required, meeting the needs of rapid battery swapping operations.

Description

Technical Field

[0001] This invention relates to the field of underground mining vehicle technology, specifically to a new energy underground mining vehicle with a battery quick-change mechanism. Background Technology

[0002] With increasingly stringent standards for green mine construction and underground safety production, traditional diesel-powered underground mining trucks are gradually being replaced by explosion-proof new energy electric mining trucks in deep metal and non-metal mines. Lithium-ion batteries have become the mainstream development direction for trackless underground transportation equipment.

[0003] Existing new energy underground mining vehicles generally adopt a fixed battery compartment structure, with battery pack locking and wiring integrated inside the frame. The battery swapping structure mostly adopts a single horizontal plug-in or straight-up-down disassembly structure, lacking adaptive correction and limit functions. The underground battery swapping space is small and the tooling alignment accuracy is limited, making it easy for the battery to shift or misalign during docking. Moreover, when locking the battery, it is mostly an independent locking structure, with locking and unlocking being separate steps and independent operations, making the operation process complicated and difficult to meet the needs of rapid battery swapping operations.

[0004] Based on this, the present invention designs a new energy underground mining vehicle with a battery quick-change mechanism to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a new energy underground mining vehicle with a battery quick-change mechanism to solve the problems of easy displacement and misalignment during battery docking mentioned in the background art; and the fact that the battery limit locking is mostly an independent locking structure, with the limit locking and unlocking being separate steps and independent operations, resulting in complicated operation procedures.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A new energy underground mining vehicle with a battery quick-swap mechanism includes a vehicle body, a cargo bin and a driver's cab mounted on the vehicle body, a protective top mount mounted on the cargo bin above the driver's cab, an auxiliary small battery mounted in the middle of the vehicle body, a protective box fixed on the vehicle body near the driver's cab, a protective cover mounted on the protective box, and a support frame fixed inside the protective box, with a main battery pack inside the support frame, power terminals on both sides of the main battery pack, and a leveling assembly attached to the bottom of the main battery pack. An adjustment component is installed at the bottom of the main battery pack, and the adjustment component is fixedly installed at the bottom of the support frame. Horizontal plates are provided on the front and rear sides of the main battery pack, and a sliding limit component is fixedly fixed at the bottom of the two horizontal plates. The sliding limit component is installed in the adjustment component. Correction locking components are rotatably installed at both ends of the horizontal plates. The correction locking components are located on the end faces of the front and rear sides of the main battery pack. A vertical frame is fixedly connected to the horizontal plate, and a pressing and connecting component is fixed to the top of the inner wall of the vertical frame. One end of the top of the two correction locking components on the same side is connected to the pressing and connecting component.

[0008] As a further embodiment of the present invention, the flat conveying assembly includes several connecting rollers, the two ends of which are rotatably connected to the adjusting assembly via bushings, and three sets of transmission belts are sleeved on the outside of the several connecting rollers. A support strip is provided between two adjacent transmission belts. The support strip is fixed on the adjusting assembly, and the main battery pack is connected to the transmission belts and the support strip. A sprocket is fixed at one end of the connecting roller, and a chain is meshed with several sprockets. A motor is fixed at the end of one of the connecting rollers.

[0009] As a further embodiment of the present invention, the adjusting assembly includes a base plate and a top plate. The support strip is fixed on the top plate, and the motor base is fixed on the side of the top plate. Two sets of first and second hinge rods are provided between the base plate and the top plate. The first and second hinge rods are cross-shaped and rotatably connected at the middle by a pin. The bottom end of the first hinge rod is rotatably connected to one side of the base plate by a pin, and the top end of the second hinge rod is rotatably connected to one side of the bottom of the top plate by a pin. The bottom ends of the two second hinge rods and the top ends of the two first hinge rods are respectively fitted with rotating shafts. The two ends of the shafts are respectively fixed with sliders. The opposite surfaces of the base plate and the top plate and the positions corresponding to the sliders are respectively provided with sliding grooves. The sliders are slidably connected in the sliding grooves. The outside of the lower shaft is rotatably connected to two electro-hydraulic rods through bushings. The other end of the electro-hydraulic rods is fixed to the middle of the base plate.

[0010] As a further embodiment of the present invention, the sliding limiting assembly includes a sliding box, which is fixed to the bottom of the top plate. Two L-shaped plates are slidably connected through the sliding box. The top of the L-shaped plates is fixed to the bottom of the horizontal plate. Two sliding rods are fixed to the inner side of the L-shaped plates. The sliding rods slide through the top plate, and springs are sleeved on the outside of the sliding rods. The springs are fixed between the inner side of the L-shaped plates and the top plate.

[0011] As a further embodiment of the present invention, three guide wheels are fixed on the side of the two L-shaped plates that are far apart from each other, and guide seats are fixed on the front and rear sides of the inner wall of the supporting frame and corresponding to the positions of the guide wheels. The guide seats are provided with guide grooves, which are composed of inclined sections and vertical sections and are interconnected. The guide wheels are currently sliding in the inclined section of the guide groove.

[0012] As a further embodiment of the present invention, the correction and locking assembly includes a rotating shaft, the bottom end of which is rotatably connected to the end of the horizontal plate via a bushing, a torsion spring is sleeved on the lower part of the outside of the rotating shaft, the torsion spring is fixed between the rotating shaft and the horizontal plate, an L-shaped bracket is fixed to the outer wall of the rotating shaft, and limit rollers are installed at the two ends of the L-shaped bracket, the two limit rollers being located on the end face of one side of the main battery pack.

[0013] As a further embodiment of the present invention, a connecting rod is fixed to the top end of the rotating shaft, and a push rod is rotatably connected to the other end of the connecting rod via a pin. A telescopic piston cylinder is rotatably connected to the other end of the push rod via a pin. The telescopic piston cylinder is composed of a sealing cylinder and a piston rod sleeved together. The end of the piston rod is rotatably connected to the connecting rod via a pin. The sealing cylinder is fixed above the inner wall of the frame. An air guide pipe is connected inside the sealing cylinder, and the other end of the air guide pipe is connected to the pressing and connecting electrical assembly.

[0014] As a further embodiment of the present invention, the pressing and connecting assembly includes a support box, which is fixed to the top of the inner wall of the stand. A piston plate slides inside the support box. The end of the air guide pipe passes through the support box and extends to the position above the piston plate. A pressure plate is fixed to the bottom of the piston plate. Two protrusions on the pressure plate slide through the support box. A connecting piece is installed on one side of the bottom of the pressure plate corresponding to the position of the connecting end.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention extends the electro-hydraulic rod of the adjustment component, causing the cross-hinged rod to retract, driving the top plate, the horizontal conveying component, and the main battery pack to slowly move downwards for storage. During the downward movement, the guide wheel slides along the inclined section of the guide groove towards the vertical section. The inclined structure of the guide groove squeezes the guide wheel, pushing the L-shaped plates on both sides to overcome the spring force and slide closer together, causing the horizontal plate to be synchronously centered, so that the two limiting rollers in the correction and locking component contact the sides of the main battery pack. At the same time, during the downward movement, the two end faces of the main battery pack are pressed against the limiting rollers of the correction and locking component, causing the limiting rollers to deflect at the end of the horizontal plate through the L-shaped bracket, until the end faces around the main battery pack are in close contact with the corresponding two limiting rollers without deflection, pushing the main battery pack to the center position of the support frame, realizing the automatic correction and centering of the main battery pack, thoroughly correcting the battery installation deviation, and ensuring that the main battery pack is accurately centered and aligned; during the downward movement and storage of the battery, the limiting rollers deflect and drive the rotating shaft through the L-shaped bracket. The rotating shaft squeezes the push rod through the connecting rod at the top. The push rod pushes the piston rod of the telescopic piston cylinder in the opposite direction, compressing the internal cavity of the telescopic piston cylinder and forcing the gas into the support box through the air guide pipe. The piston plate inside the support box is driven by the air pressure to slide steadily downward, driving the pressure plate to press down vertically. This makes the contact piece at the bottom of the pressure plate accurately and tightly fit and press against the contact end position at the top of the main battery pack, automatically completing the integrated connection and conduction of the main battery pack's circuit and communication lines. No manual wiring or alignment is required, meeting the needs of rapid battery swapping operations. 2. This invention adjusts the retraction of the electric hydraulic rod of the component, pulling the bottom shaft and slider to slide towards each other along the sliding grooves of the bottom plate and top plate. This causes the first and second hinged rods, which are arranged in a cross pattern, to rotate and lift, so that the top plate moves upward smoothly as a whole. At the same time, the top flat conveying component, main battery pack, horizontal plate and sliding limit component are lifted upward as a whole. During the lifting of the top plate, the sliding limit component moves upward with it, and the L-shaped plate follows the lifting of the top plate. The guide wheel on its outer side slides from the vertical section to the inclined section along the guide groove of the guide seat on the inner wall of the support frame. Guided by the inclined guide groove, the L-shaped plates on both sides slide away from each other through the spring force, causing the horizontal plate to move outwards slightly in sync. The horizontal plate then causes the rotating shafts at both ends to move away from the main battery pack, so that the rotating shafts rotate and reset under the action of the torsion spring. This completely removes the limiting rollers that were originally locked to the two end faces of the main battery pack from the battery sidewall constraint. During the deflection of the rotating shaft, the piston rod in the telescopic piston cylinder is pulled by the push rod and connecting rod, so that the air pipe draws gas from inside the support box. The gas inside the support box decreases and the air pressure drops, causing the internal piston plate to drive the pressure plate to rise. The contact plate at the bottom of the pressure plate disengages from the contact end at the top of the main battery pack, automatically disconnecting the battery power supply and communication connection, achieving a safe power-off without contact or electric arc. At this time, the main battery pack is only stably supported on the transmission belt and support bar surface of the flat conveyor component. Starting the flat conveyor component can transport the unlocked and power-off main battery pack outwards, quickly completing all the pre-processing steps of lifting and unloading the battery. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 3 This is a top view of the supporting frame of the present invention.

[0020] Figure 4 This is a schematic diagram of a partial cross-section of the support frame of the present invention;

[0021] Figure 5 This is a side view of the sliding limiting component and the upright frame of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the flat conveying component and the adjusting component of the present invention;

[0023] Figure 7 This is a schematic diagram of the sliding limiting component of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of the support frame and the correction and locking assembly of the present invention;

[0025] Figure 9 This is a schematic diagram of the structure of the correction and locking component of the present invention;

[0026] Figure 10 This is a schematic diagram of the structure of the support frame of the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of the clamping electrical connection assembly of the present invention;

[0028] Figure 12 This is a schematic diagram of the structure of the guide seat and guide groove of the present invention.

[0029] The attached diagram lists the components represented by each number as follows: 1. Vehicle body; 2. Truck bed; 3. Cab; 4. Protective top; 5. Protective box; 6. Protective cover; 7. Support frame; 8. Main battery pack; 9. Power terminal; 10. Horizontal conveyor assembly; 101. Connecting roller; 102. Drive belt; 103. Sprocket; 104. Chain; 105. Motor; 106. Support bar; 11. Adjustment assembly; 111. Base plate; 112. Top plate; 113. First hinge rod; 114. Second hinge rod; 115. Shaft; 116. Slider; 117. Slide groove; 118. Electro-hydraulic rod; 12. Cross plate; 13. 131. Sliding limit assembly; 132. Sliding box; 133. L-shaped plate; 134. Sliding rod; 135. Spring; 14. Guide wheel; 15. Correction and locking assembly; 16. Rotating shaft; 17. Torsion spring; 18. L-shaped bracket; 19. Limiting roller; 10. Connecting rod; 10. Push rod; 11. Telescopic piston cylinder; 12. Air guide pipe; 13. Stand; 14. Pressing and connecting assembly; 15. Support box; 16. Piston plate; 17. Pressure plate; 18. Connecting piece; 19. Guide seat; 10. Guide groove; 10. Auxiliary small battery. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-12 The present invention provides a technical solution:

[0032] A new energy underground mining vehicle with a battery quick-swap mechanism includes a vehicle body 1, a cargo box 2 and a cab 3 mounted on the vehicle body 1, a protective top seat 4 mounted on the cargo box above the cab 3, and an auxiliary small battery 19 mounted in the middle of the vehicle body 1. The independent auxiliary small battery 19 mounted on the vehicle body 1 can continuously provide uninterrupted power to the vehicle's electronic control system, lighting system and hydraulic control system throughout the entire process of battery swapping, disassembly and reassembly of the main battery pack 8, and power disconnection and connection. This completely avoids the problem of the whole vehicle losing power and stopping and resetting parameters during the battery swapping process, and ensures that the equipment is controllable, safe and stable during the battery swapping operation.

[0033] A protective box 5 is fixed on the side of the vehicle body 1 near the driver's cab 3. A protective cover 6 is installed on the protective box 5, and a support frame 7 is fixed inside the protective box 5. The main battery pack 8 is located inside the support frame 7. Power terminals 9 are provided on both sides of the main battery pack 8. A flat conveying component 10 is attached to the bottom of the main battery pack 8. An adjustment component 11 is installed at the bottom of the flat conveying component 10. The adjustment component 11 is fixedly installed at the bottom of the support frame 7. A horizontal plate 12 is provided on the front and rear sides of the main battery pack 8. A sliding limit component 13 is fixed at the bottom of the two horizontal plates 12. The sliding limit component 13 is installed in the adjustment component 11. A correction locking component 14 is rotatably installed at both ends of the horizontal plate 12. The correction locking component 14 is located on the end face of the front and rear sides of the main battery pack 8. A vertical frame 15 is fixedly connected to the horizontal plate 12. A pressing power connection component 16 is fixed to the top of the inner wall of the vertical frame 15. One end of the top of the two correction locking components 14 on the same side is connected to the pressing power connection component 16.

[0034] As a further embodiment of the present invention, the flat conveying assembly 10 includes several connecting rollers 101. The two ends of each connecting roller 101 are rotatably connected to the adjusting assembly 11 via bushings. Three sets of transmission belts 102 are sleeved around the connecting rollers 101. A support strip 106 is provided between adjacent transmission belts 102. The support strip 106 is fixed to the adjusting assembly 11, and the main battery pack 8 overlaps the transmission belts 102 and the support strip 106. The main battery pack 8 is completely submerged inside the supporting frame 7 for enclosed storage, forming a double-layer protective cavity with the protective box 5 and protective cover 6 on the outside of the vehicle body 1. Combining the rigid load-bearing support of the bottom support strip 106 with the flexible buffering characteristics of the transmission belts 102, the impact vibration caused by the complex road surface underground can be effectively attenuated. Simultaneously, it isolates the battery installation area from high dust, water spray, and humid corrosive gases underground, providing all-round dustproof, waterproof, and impact-resistant protection for the main battery pack 8.

[0035] A sprocket 103 is fixed to one end of the connecting roller 101. Several sprockets 103 are meshed with a chain 104. A motor 105 is fixed to the end of one of the connecting rollers 101. When the motor 105 starts, it drives the end sprocket 103 to rotate synchronously with the chain 104, thereby driving the three sets of external transmission belts 102 to rotate at a uniform speed. Together with the fixed support strips 106, the main battery pack 8 is stably supported, and the unlocked, depleted main battery pack 8 is horizontally transported outward. The entire process requires no manual disassembly or assembly. During the operation of the transmission belts 102, the connecting rollers 101 provide support, improving the stability of the support and guidance of the main battery pack 8.

[0036] As a further embodiment of the present invention, the adjusting assembly 11 includes a base plate 111 and a top plate 112. A support strip 106 is fixed to the top plate 112, and the base of the motor 105 is fixed to the side of the top plate 112. Two sets of first hinge rods 113 and second hinge rods 114 are provided between the base plate 111 and the top plate 112. The first hinge rods 113 and second hinge rods 114 are crossed and rotatably connected at their midpoints by a pin. The bottom end of the first hinge rod 113 is rotatably connected to one side of the base plate 111 by a pin, and the top end of the second hinge rod 114 is rotatably connected to the bottom plate 111 by a pin. The bottom of the top plate 112 is movably connected to one side. The bottom ends of the two second hinge rods 114 and the top ends of the two first hinge rods 113 are respectively sleeved with rotating shafts 115. The two ends of the shafts 115 are respectively fixed with sliders 116. The opposite surfaces of the bottom plate 111 and the top plate 112 and the positions corresponding to the sliders 116 are respectively provided with grooves 117. The sliders 116 are slidably connected in the grooves 117. The outside of the lower shaft 115 is rotatably connected to two electric hydraulic rods 118 through bushings. The other end of the electric hydraulic rods 118 is fixed in the middle of the bottom plate 111.

[0037] During operation, the main battery pack 8 is supported above multiple transmission belts 102 and support bars 106 of the flat conveyor assembly 10, and is housed inside the support frame 7 in a sunken protective state. After the battery swapping procedure is initiated, the electric hydraulic rod 118 of the adjusting assembly 11 retracts, pulling the bottom shaft 115 and slider 116 to slide towards each other along the sliding grooves 117 of the bottom plate 111 and the top plate 112. This causes the first hinge rod 113 and the second hinge rod 114, which are arranged in a cross pattern, to rotate and lift, so that the top plate 112 moves upward smoothly as a whole. Simultaneously, the top flat conveyor assembly 10, the main battery pack 8, the horizontal plate 12, and the sliding limit assembly 13 are lifted upward as a whole, making it convenient to push the main battery pack 8 out of the protective box 5 for battery swapping.

[0038] As a further embodiment of the present invention, the sliding limiting assembly 13 includes a sliding box 131, which is fixed to the bottom of the top plate 112. Two L-shaped plates 132 are slidably connected through the sliding box 131. The top of the L-shaped plates 132 is fixed to the bottom of the horizontal plate 12. Two sliding rods 133 are fixed to the inner side of the L-shaped plates 132. The sliding rods 133 slide through the top plate 112, and a spring 134 is sleeved on the outside of the sliding rods 133. The spring 134 is fixed between the inner side of the L-shaped plates 132 and the top plate 112.

[0039] During operation, the L-shaped plate 132 can slide horizontally inside the slide box 131. With the support and guidance of the slide rod 133, it improves the stability of the horizontal movement of the cross plate 12 and the correction and locking assembly 14. The spring 134 can support the inner side of the L-shaped plate 132, making it easier for the L-shaped plate 132 to move the cross plate 12 and the correction and locking assembly 14 away from the main battery pack 8.

[0040] As a further embodiment of the present invention, three guide wheels 135 are fixed on the side of the two L-shaped plates 132 that are far apart from each other, and guide seats 17 are fixed on the front and rear sides of the inner wall of the support frame 7 and corresponding to the positions of the guide wheels 135. A guide groove 18 is provided inside the guide seat 17. The guide groove 18 is composed of an inclined section and a vertical section and is interconnected. The guide wheel 135 is currently sliding in the inclined section of the guide groove 18.

[0041] During operation, the L-shaped plate 132 rises along with the top plate 112, and its outer guide wheel 135 slides from the vertical section to the inclined section along the guide groove 18 of the guide seat 17 on the inner wall of the support frame 7. Guided by the inclined guide groove 18, the two L-shaped plates 132 slide away from each other by the elastic force of the spring 134, causing the horizontal plate 12 to move outward synchronously and release the lateral limiting constraint on the correction locking component 14. During the downward movement of the L-shaped plate 132, the guide wheel 135 slides from the inclined section to the vertical section along the guide groove 18. The inclined structure of the guide groove 18 squeezes the guide wheel 135, pushing the two L-shaped plates 132 to overcome the elastic force of the spring 134 and slide closer to each other, causing the horizontal plate 12 to be aligned synchronously, so that the correction locking component 14 can perform correction and limiting on the main battery pack 8.

[0042] As a further embodiment of the present invention, the correction and locking assembly 14 includes a rotating shaft 141. The bottom end of the rotating shaft 141 is rotatably connected to the end of the horizontal plate 12 via a bushing. A torsion spring 142 is sleeved on the lower part of the outside of the rotating shaft 141. The torsion spring 142 is fixed between the rotating shaft 141 and the horizontal plate 12. An L-shaped bracket 143 is fixed on the outer wall of the rotating shaft 141. Limiting rollers 144 are installed at the two ends of the L-shaped bracket 143. The two limiting rollers 144 are located on the end face of one side of the main battery pack 8.

[0043] During operation, the two limiting rollers 144 in the alignment locking assembly 14 contact the sides of the main battery pack 8. Simultaneously, during the downward movement, the two end faces of the main battery pack 8 are pressed against the limiting rollers 144 of the alignment locking assembly 14, causing the limiting rollers 144 to drive the rotating shaft 141 to deflect at the end of the horizontal plate 12 via the L-shaped bracket 143, until the end faces of the main battery pack 8 are in close contact with the corresponding two limiting rollers 144 without deflection, pushing the main battery pack 8 to the center position of the support frame 7, realizing the automatic alignment and centering of the main battery pack 8; when the horizontal plate 12 drives the rotating shafts 141 at both ends away from the main battery pack 8, the rotating shafts 141 rotate and reset under the elastic force of the torsion spring 142, so that the limiting rollers 144 that were originally tightly attached to and locked on the two end faces of the main battery pack 8 are completely released from the constraint of the battery side wall.

[0044] As a further embodiment of the present invention, a connecting rod 145 is fixed at the top end of the rotating shaft 141, and a push rod 146 is rotatably connected to the other end of the connecting rod 145 via a pin. The other end of the push rod 146 is rotatably connected to a telescopic piston cylinder 147 via a pin. The telescopic piston cylinder 147 is composed of a sealing cylinder and a piston rod sleeved together. The end of the piston rod is rotatably connected to the connecting rod 145 via a pin. The sealing cylinder is fixed above the inner wall of the stand 15. An air guide pipe 148 is connected inside the sealing cylinder. The other end of the air guide pipe 148 is connected to the pressing and connecting electrical assembly 16.

[0045] The clamping electrical connection assembly 16 includes a support box 161, which is fixed to the top of the inner wall of the stand 15. A piston plate 162 slides inside the support box 161. The end of the air guide tube 148 passes through the support box 161 and extends to the position above the piston plate 162. A pressure plate 163 is fixed to the bottom of the piston plate 162. Two protrusions on the pressure plate 163 slide through the support box 161. An electrical connection piece 164 is installed on one side of the bottom of the pressure plate 163 corresponding to the position of the electrical connection end 9.

[0046] During operation, the limiting roller 144 deflects and drives the rotating shaft 141 to rotate via the L-shaped bracket 143. The rotating shaft 141 then presses the push rod 146 via the connecting rod 145 at the top. The push rod 146 pushes the piston rod of the telescopic piston cylinder 147 in the opposite direction, compressing the internal cavity of the telescopic piston cylinder 147. The gas inside the cavity is then forced into the support box 161 of the pressing and connecting assembly 16 through the air guide pipe 148, realizing automatic air pressure accumulation and intake. As the air pressure continues to rise, the piston plate 162 inside the support box 161 slides steadily downward under the air pressure, driving the pressure plate 163 to press vertically downward as a whole. This causes the connecting piece 164 at the bottom of the pressure plate 163 to precisely and tightly fit and press against the connecting end 9 at the top of the main battery pack 8, automatically completing the integrated connection and conduction of the main battery pack 8's circuit and communication lines.

[0047] Working principle of this invention:

[0048] When the main battery pack 8 of the mining truck is depleted and needs to be replaced, in the initial state, the main battery pack 8 is stably supported above the multiple transmission belts 102 and support bars 106 of the horizontal conveying component 10, and is housed inside the support frame 7 in a sunken and protected state. After the battery swapping program is started, the electric hydraulic rod 118 of the adjusting component 11 retracts, pulling the bottom shaft 115 and the slider 116 to slide towards each other along the sliding grooves 117 of the bottom plate 111 and the top plate 112, which drives the cross-arranged first hinge rod 113 and second hinge rod 114 to rotate and lift, so that the top plate 112 moves upward smoothly as a whole, and simultaneously drives the top horizontal conveying component 10, the main battery pack 8, the horizontal plate 12 and the sliding limit component 13 to be lifted upward as a whole;

[0049] During the lifting process of the top plate 112, the sliding limit assembly 13 moves upward accordingly, and the L-shaped plate 132 rises with the top plate 112. The guide wheel 135 on its outer side slides from the vertical section to the inclined section along the guide groove 18 of the guide seat 17 on the inner wall of the support frame 7. Guided by the limiting of the inclined guide groove 18, the two L-shaped plates 132 slide away from each other by the elastic force of the spring 134, causing the horizontal plate 12 to move outward synchronously and slightly, releasing the lateral limiting constraint on the correction locking assembly 14. At the same time, the internal air pressure of the clamping and connecting assembly 16 is reset and depressurized through the air duct 148. The piston rod of the telescopic piston cylinder 147 retracts, pulling the push rod 146 and the connecting rod 145 to drive the rotating shaft 141 to rotate in the positive direction against the elastic force of the torsion spring 142. This causes the limiting roller 144 at the end of the L-shaped bracket 143 to rotate outward synchronously, completely disengaging from the side end limit of the main battery pack 8, thus completing the automatic unlocking of the battery in all directions. After the battery is fully unlocked, the motor 105 of the horizontal conveying assembly 10 starts, driving the end sprocket 103 to rotate synchronously with the chain 104 and all connecting rollers 101. This drives the three sets of external transmission belts 102 to rotate at a uniform speed, and with the fixed support strip 106, it stably supports the main battery pack 8, conveying the unlocked depleted main battery pack 8 horizontally outward. The entire process is completed without manual disassembly or bolt removal, quickly completing the depleted battery removal operation.

[0050] The brand-new, fully charged main battery pack 8 is fed into the conveyor belt 102 of the flat conveyor assembly 10 via external tooling. The motor 105 reverses, driving the conveyor belt 102 to rotate in the opposite direction, smoothly conveying the main battery pack 8 to the preset installation position inside the support frame 7, completing the initial alignment. At this time, the battery has slight positional and angular deviations, which do not require precise manual calibration. Adaptive correction and positioning are achieved by relying on the correction and locking components 14 on both sides.

[0051] After the battery is initially positioned, the electric hydraulic rod 118 of the adjusting component 11 extends, driving the cross hinge rod to retract, and driving the top plate 112, the horizontal conveying component 10, and the main battery pack 8 to slowly move downwards and be stored. During the downward movement, the guide wheel 135 slides along the inclined section of the guide groove 18 towards the vertical section. The inclined structure of the guide groove 18 squeezes the guide wheel 135, pushing the L-shaped plates 132 on both sides to overcome the elastic force of the spring 134 and slide closer together, driving the horizontal plate 12 to be synchronously centered, so that the two limiting rollers 144 in the correction locking component 14 contact the side of the main battery pack 8. Meanwhile, during the downward movement, the two end faces of the main battery pack 8 are pressed against the limiting rollers 144 of the correction and locking assembly 14, causing the limiting rollers 144 to drive the rotating shaft 141 to deflect at the end of the horizontal plate 12 through the L-shaped bracket 143, until the end faces of the main battery pack 8 are in close contact with the corresponding two limiting rollers 144 and no deflection occurs, pushing the main battery pack 8 to the center position of the support frame 7, thus realizing the automatic correction and centering of the main battery pack 8;

[0052] During the process of lowering and storing the battery, the limiting roller 144 deflects and drives the rotating shaft 141 to rotate through the L-shaped bracket 143. The rotating shaft 141 then squeezes the push rod 146 through the connecting rod 145 at the top. The push rod 146 pushes the piston rod of the telescopic piston cylinder 147 in the opposite direction, compressing the internal cavity of the telescopic piston cylinder 147. The gas in the cavity is then forced into the support box 161 of the clamping electrical assembly 16 through the air guide pipe 148, realizing automatic air pressure storage and intake. As the air pressure continues to rise, the piston plate 162 inside the support box 161 slides steadily downward under the pressure, causing the pressure plate 163 to press down vertically. This allows the contact piece 164 at the bottom of the pressure plate 163 to precisely and tightly fit and press against the contact terminal 9 at the top of the main battery pack 8, automatically completing the integrated connection and conduction of the main battery pack 8's circuit and communication lines without the need for manual wiring or alignment. This allows the main battery pack 8 to sink entirely into the support frame 7 for enclosed storage, forming a double-layer protective cavity with the protective box 5 and protective cover 6 on the outside of the vehicle body 1, thus improving the protection effect of the main battery pack 8.

Claims

1. A new energy underground mining vehicle with a battery quick-change mechanism, comprising a vehicle body (1), characterized in that: The vehicle body (1) is equipped with a cargo box (2) and a cab (3). A protective top seat (4) is installed on the cargo box above the cab (3). An auxiliary small battery (19) is installed in the middle of the vehicle body (1). A protective box (5) is fixed on the side of the vehicle body (1) near the cab (3). A protective cover (6) is installed on the protective box (5). A support frame (7) is fixed inside the protective box (5). A main battery pack (8) is installed inside the support frame (7). A power terminal (9) is provided on both sides of the main battery pack (8). A flat conveying component (10) is attached to the bottom of the main battery pack (8). An adjustment component (11) is installed at the bottom of the flat conveying component (10). The adjustment component (11) is fixedly installed at the bottom of the support frame (7). The front and rear sides of the main battery pack (8) are respectively provided with horizontal plates (12). The bottom of the two horizontal plates (12) is fixed with a sliding limit component (13). The sliding limit component (13) is installed in the adjustment component (11). The two ends of the horizontal plate (12) are rotatably installed with correction locking components (14). The correction locking components (14) are located on the end faces of the front and rear sides of the main battery pack (8). The horizontal plate (12) is fixedly connected with a stand (15). The top of the inner wall of the stand (15) is fixed with a pressing connection component (16). One end of the top of the two correction locking components (14) on the same side is connected to the pressing connection component (16).

2. The new energy underground mining vehicle with a battery quick-change mechanism according to claim 1, characterized in that: The flat conveying assembly (10) includes several connecting rollers (101). The two ends of the connecting rollers (101) are rotatably connected to the adjusting assembly (11) through bushings. Three sets of transmission belts (102) are sleeved on the outside of the several connecting rollers (101). A support strip (106) is provided between two adjacent transmission belts (102). The support strip (106) is fixed on the adjusting assembly (11). The main battery pack (8) overlaps the transmission belts (102) and the support strip (106). A sprocket (103) is fixed at one end of the connecting roller (101). A chain (104) is meshed with several sprockets (103). A motor (105) is fixed at the end of one of the connecting rollers (101).

3. A new energy underground mining vehicle with a battery quick-change mechanism according to claim 2, characterized in that: The adjustment assembly (11) includes a base plate (111) and a top plate (112). The support strip (106) is fixed on the top plate (112), and the base of the motor (105) is fixed on the side of the top plate (112). Two sets of first hinge rods (113) and second hinge rods (114) are provided between the base plate (111) and the top plate (112). The first hinge rods (113) and the second hinge rods (114) are cross-shaped and rotatably connected in the middle by a pin. The bottom end of the first hinge rod (113) is rotatably connected to one side of the base plate (111) by a pin, and the top end of the second hinge rod (114) is rotatably connected to the bottom plate (111) by a pin. On one side of the bottom of the top plate (112), the bottom ends of the two second hinge rods (114) and the top ends of the two first hinge rods (113) are respectively fitted with rotating shafts (115). The two ends of the shafts (115) are respectively fixed with sliders (116). The opposite surfaces of the bottom plate (111) and the top plate (112) and the position corresponding to the sliders (116) are respectively provided with grooves (117). The sliders (116) are slidably connected in the grooves (117). The outside of the lower shaft (115) is rotatably connected to two electric hydraulic rods (118) through bushings. The other end of the electric hydraulic rods (118) is fixed in the middle of the bottom plate (111).

4. A new energy underground mining vehicle with a battery quick-change mechanism according to claim 3, characterized in that: The sliding limit assembly (13) includes a sliding box (131), which is fixed to the bottom of the top plate (112). Two L-shaped plates (132) are slidably connected inside the sliding box (131). The top of the L-shaped plate (132) is fixed to the bottom of the horizontal plate (12). Two sliding rods (133) are fixed inside the L-shaped plate (132). The sliding rods (133) slide through the top plate (112), and a spring (134) is sleeved on the outside of the sliding rods (133). The spring (134) is fixed between the inside of the L-shaped plate (132) and the top plate (112).

5. A new energy underground mining vehicle with a battery quick-change mechanism according to claim 4, characterized in that: Three guide wheels (135) are fixed on the side of the two L-shaped plates (132) that are far apart from each other, and guide seats (17) are fixed on the front and rear sides of the inner wall of the support frame (7) and corresponding to the positions of the guide wheels (135). The guide seats (17) have guide grooves (18) inside. The guide grooves (18) are composed of inclined sections and vertical sections and are interconnected. The guide wheels (135) are currently sliding in the inclined section of the guide grooves (18).

6. A new energy underground mining vehicle with a battery quick-change mechanism according to claim 1, characterized in that: The correction and locking assembly (14) includes a rotating shaft (141), the bottom end of which is rotatably connected to the end of the horizontal plate (12) via a bushing. A torsion spring (142) is sleeved on the lower part of the rotating shaft (141), and the torsion spring (142) is fixed between the rotating shaft (141) and the horizontal plate (12). An L-shaped bracket (143) is fixed on the outer wall of the rotating shaft (141), and two limit rollers (144) are installed at the two ends of the L-shaped bracket (143). The two limit rollers (144) are located on the end face of one side of the main battery pack (8).

7. A new energy underground mining vehicle with a battery quick-change mechanism according to claim 6, characterized in that: The top end of the rotating shaft (141) is fixed with a connecting rod (145). The other end of the connecting rod (145) is rotatably connected to a push rod (146) via a pin. The other end of the push rod (146) is rotatably connected to a telescopic piston cylinder (147) via a pin. The telescopic piston cylinder (147) is composed of a sealing cylinder and a piston rod sleeved together. The end of the piston rod is rotatably connected to the connecting rod (145) via a pin. The sealing cylinder is fixed above the inner wall of the stand (15). A vent pipe (148) is connected inside the sealing cylinder. The other end of the vent pipe (148) is connected to the pressing and connecting electrical assembly (16).

8. A new energy underground mining vehicle with a battery quick-change mechanism according to claim 7, characterized in that: The clamping electrical connection assembly (16) includes a support box (161), which is fixed to the top of the inner wall of the stand (15). A piston plate (162) slides inside the support box (161). The end of the air guide pipe (148) passes through the support box (161) and extends to the position above the piston plate (162). A pressure plate (163) is fixed to the bottom of the piston plate (162). Two protrusions on the pressure plate (163) slide through the support box (161). An electrical contact piece (164) is installed on one side of the bottom of the pressure plate (163) corresponding to the position of the electrical connection end (9).

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