Self-battery-replacing mechanism for power battery pack of underground equipment

Abstract

The invention relates to the field of equipment battery replacement, in particular to an underground equipment power battery pack self-battery-replacement mechanism which comprises an outer door frame, a fork frame assembly, a movable pulley assembly and a bolt assembly, the fork frame assembly comprises a fork frame, a main roller set and a side roller set, and the fork frame assembly is movably connected with the outer door frame through the main roller set and the side roller set; the fork frame assembly can roll up and down in the outer door frame, one end of the fork frame is fixedly connected with one end of the main roller set, a hook claw is arranged on the fork frame, a battery pack can be conveniently grabbed for automatic replacement, a lifting oil cylinder is fixedly installed in the middle of the inner side of the bottom of the outer door frame, a chain wheel base is arranged on a piston rod of the lifting oil cylinder, and a chain wheel is rotationally installed on the outer side of the chain wheel base. A dragging chain is wound on the outer side of the chain wheel, the two ends of the dragging chain are fixedly connected with the outer door frame and the fork frame respectively, the dragging chain can drag the fork frame to drive the fork frame to move up and down, an oil cylinder is fixedly installed on a cross beam on the top of the outer door frame, and bolts at the two ends of the oil cylinder are telescopic and play a role in fixing and limiting.

Description

Technical Field

[0001] The present invention relates to the field of equipment battery replacement, and specifically to a self-battery replacement mechanism for a power battery pack of underground equipment. Background Art

[0002] The electrification transformation of construction machinery is becoming more and more intense. Due to the limitations of battery performance, the endurance problem is particularly prominent for underground mining trucks under heavy working conditions. In order to ensure the working time and efficiency of underground mining trucks, the battery replacement solution is an effective means in the industry to solve the endurance problem and improve working efficiency. The power battery pack quick-change mechanism of underground mining trucks on the market currently consists of a connecting rod mechanism driven by a hydraulic cylinder and a clamping device, which can realize the separation, hooking and clamping of the battery pack from the vehicle body.

[0003] However, the prior art has the following defects:

[0004] The existing quick-change connecting rod mechanism has obvious shortcomings. The connecting rod mechanism is only used for hooking and requires a separate clamping mechanism. Considering the layout space of the entire vehicle, the end of the driving cylinder connected to the connecting rod mechanism often has a smaller lever arm, and the lever arm connected to the battery pack end is larger, resulting in a larger cylinder diameter of the driving cylinder, and even requiring multiple cylinders to be configured for simultaneous operation. When there are multiple cylinders, a hydraulic system is required to ensure the consistency of the cylinder movements, which increases the complexity and cost of the hydraulic system. Summary of the invention

[0005] The purpose of the present invention is to provide a self-replacement mechanism for a power battery pack of underground equipment to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a self-replacing mechanism for a power battery pack of underground equipment, comprising an outer mast, a fork frame assembly, a movable pulley assembly and a latch assembly, the fork frame assembly comprising a fork frame, a main roller group and a side roller, the top and middle of one side of the fork frame assembly are respectively provided with a main roller group and a side roller group, the fork frame assembly is movably connected to the middle of one side of the outer mast through the main roller group and the side roller group, a crossbeam is provided on the inner side of the top of the outer mast, and the latch assembly is fixedly connected to the crossbeam at the top of the outer mast.

[0007] By adopting the above technical solution, the fork frame assembly can slide up and down inside the outer mast through the main roller group and the side roller group, and the latch assembly can plug and lock the fork frame and the outer mast to prevent the fork frame from falling out of control after the lifting cylinder is depressurized due to a malfunction.

[0008] The fork frame assembly is provided with a fork frame fixedly installed in the middle of one side of the main roller group, and one end of the fork frame is fixedly connected to one end of the main roller group connecting plate.

[0009] The above technical solution is adopted, in which one end of the fork frame is fixedly connected to one end of the side of the main roller assembly mounting plate, and a round through hole is opened on the fork frame.

[0010] The movable pulley assembly includes a lifting cylinder, a sprocket seat, a sprocket and a drag chain. The bottom of the lifting cylinder is threadedly connected to the inner side of the middle of the bottom of the outer mast through bolts, and the rod head sprocket seat of the lifting cylinder piston rod is threadedly connected through bolts.

[0011] By adopting the above technical solution, the piston rod of the lifting cylinder can drive the sprocket seat to rise and fall, thereby driving the drag chain to move on the sprocket. The sprocket seat is threadedly connected to the piston rod head of the lifting cylinder, which is convenient for installation and disassembly, and convenient for repair and replacement.

[0012] The sprocket sleeve is arranged on the outer side of the sprocket seat and the two are rotatably connected. A groove is opened in the middle of the outer side of the sprocket, and the drag chain is wound in the outer groove of the sprocket.

[0013] By adopting the above technical solution, the drag chain is mounted in the groove outside the sprocket, which can prevent the drag chain from slipping and affect the dragging effect.

[0014] A fixing plate is fixedly installed at the bottom of the inner side of the outer door frame, one end of the drag chain is fixedly connected to one end of the fixing plate of the outer door frame, and the other end of the drag chain is fixedly connected to the fork frame.

[0015] The above technical solution is adopted in which both ends of the drag chain are fixed, and as the lifting cylinder rises and falls, the fork frame assembly can be driven to move up and down inside the outer door frame.

[0016] The latch assembly comprises an oil cylinder, a latch and an articulated shaft, and piston rods at both ends of the oil cylinder are hingedly connected to the latch through the articulated shaft.

[0017] By adopting the above technical solution, the oil cylinder is opened to drive the bolts at both ends to extend and retract, and the outer sides of the two ends of the bolts are extended to plug and lock the fork frame and the outer door frame to play a fixed limit role.

[0018] The two ends of one side of the oil cylinder are fixedly connected to the inner side of the outer mast crossbeam through a fixing block, and the two ends of the outer mast away from the fork frame assembly are provided with mounting plates and a plurality of threaded through holes are opened on the mounting plates.

[0019] The above technical solution is adopted, in which the fixed block on the oil cylinder is threadedly connected to the outer door frame crossbeam, which is convenient for disassembly, repair and replacement, and can extend the service life. The outer door frame is fastened to the frame of the underground mining vehicle by bolts.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a technical solution that is different from the above-mentioned connecting rod mechanism. This technical solution uses a movable pulley group and a hydraulic lifting cylinder to realize the lifting and lowering of the fork frame, and the fork frame hooks the power battery pack to realize the battery replacement function. This solution is equipped with a hydraulic lock limit cylinder, and the fork frame and the outer door frame are locked and limited by a latch to prevent the fork frame from falling uncontrollably after the lifting cylinder is depressurized due to a fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic structural diagram of a fork frame assembly of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the movable pulley assembly of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the latch assembly of the present invention.

[0026] In the figure: 1. outer door frame; 2. fork frame assembly; 3. movable pulley assembly; 4. latch assembly; 5. fork frame; 6. main roller assembly; 7. side roller assembly; 8. lifting cylinder; 9. sprocket seat; 10. sprocket; 11. drag chain; 12. cylinder; 13. latch; 14. articulated shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-4 The present invention provides a self-replacing mechanism for a power battery pack of underground equipment, comprising an outer mast 1, a fork frame assembly 2, a movable pulley assembly 3 and a latch assembly 4, the fork frame assembly 2 comprising a fork frame 5, a main roller group 6 and a side roller group 7, the main roller group 6 and the side roller group 7 are respectively provided at the top and the middle of one side of the fork frame assembly 2, the fork frame assembly 2 is movably connected to the middle of one side of the outer mast 1 through the main roller group 6 and the side roller group 7, a crossbeam is provided on the inner side of the top of the outer mast 1, the latch assembly 4 is fixedly connected to the crossbeam at the top of the outer mast 1, and the fork frame assembly 2 can roll up and down inside the outer mast 1.

[0029] The fork frame assembly 2 is provided with a fork frame 5 fixedly installed in the middle of one side of the main roller group 6, one end of the fork frame 5 is fixedly connected to one end of the connecting plate of the main roller group 6, the fork frame 5 is arranged close to the main roller group 6, and a hooking structure is provided on the fork frame 5.

[0030] The movable pulley assembly 3 includes a lifting cylinder 8, a sprocket seat 9, a sprocket 10 and a drag chain 11. The bottom of the lifting cylinder 8 is threadedly connected to the inner side of the middle of the bottom of the outer door frame 1 by bolts. The rod head sprocket seat 9 of the piston rod of the lifting cylinder 8 is threadedly connected by bolts. The piston rod of the lifting cylinder 8 is retractable, thereby being able to drive the sprocket seat 9 to rise and fall.

[0031] The sprocket 10 is sleeved on the outside of the sprocket seat 9 and the two are rotatably connected. A groove is opened in the middle of the outside of the sprocket 10. The drag chain 11 is wound in the outer groove of the sprocket 10. A wear-resistant pad is provided inside the outer groove of the sprocket 10.

[0032] A fixed plate is fixedly installed at the bottom of the inner side of the outer door frame 1, one end of the drag chain 11 is fixedly connected to one end of the fixed plate of the outer door frame 1, and the other end of the drag chain 11 is fixedly connected to the fork frame 5. Both ends of the drag chain 11 are fixedly installed, and the drag chain 11 can pull the fork frame assembly 2 to drive it to move up and down.

[0033] The latch assembly 4 comprises an oil cylinder 12, a latch 13 and a hinge shaft 14. The piston rods at both ends of the oil cylinder 12 are hingedly connected to the latch 13 through the hinge shaft 14. The oil cylinder 12 drives the latch 13 at both ends to extend and retract.

[0034] The two ends of one side of the oil cylinder 12 are fixedly connected to the inner side of the crossbeam of the outer door frame 1 through fixing blocks. The two ends of the outer door frame 1 away from the fork frame assembly 2 are provided with mounting plates and a number of threaded through holes are opened on the mounting plates. The outer door frame 1 is threadedly connected to the frame of the underground mining vehicle through bolts, and is firmly installed and tightly connected.

[0035] Working principle: When the present invention is used, the outer door frame 1 is first erected on the frame of the underground mining vehicle and then fastened by bolts. Four hooks are provided on the fork frame 5. When the battery pack to be replaced is forked, the hooks cooperate with the battery pack. When the replaced battery pack falls, the piston rod of the lifting cylinder 8 retracts. After the replaced battery pack falls to the ground, the piston rod of the lifting cylinder 8 continues to retract until the hooks of the fork frame 5 are completely out of the replaced battery pack. After making sure that the battery pack to be replaced is detached from the underground mining car, the driver operates the underground mining car to fork the battery pack to be replaced. After the battery pack to be replaced is completely hooked by the fork frame 5, the lifting cylinder 8 is lifted, and the piston rod pushes the sprocket seat 9 and the sprocket 10 of the pulley assembly 3. The drag chain 11 pulls the fork frame assembly 2 to lift. After lifting into place, the hook claw on the fork frame 5 and the inverted hook claw of the underground mining car frame clamp the battery pack under the lifting force of the lifting cylinder 8. After lifting and clamping, the piston rod of the cylinder 12 of the latch assembly 4 extends out, pushing the latch 13 through the pin holes on the fork frame 5 and the outer door frame 1 in turn, and leaving the latch 13 in the pin holes on the fork frame 5 and the outer door frame 1, realizing the lock limit of the fork frame assembly 2, that is, at this time the fork frame assembly 2 and the outer door frame 1 cannot move relative to each other.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-replacement mechanism for a power battery pack of underground equipment, comprising an outer door frame (1), a fork frame assembly (2), a movable pulley assembly (3) and a latch assembly (4), characterized in that: The fork frame assembly (2) comprises a fork frame (5), a main roller group (6) and a side roller group (7); the main roller group (6) and the side roller group (7) are respectively provided at the top and the middle of one side of the fork frame assembly (2); the fork frame assembly (2) is movably connected to the middle of one side of the outer door frame (1) through the main roller group (6) and the side roller group (7); a crossbeam is provided on the inner side of the top of the outer door frame (1); and the latch assembly (4) is fixedly connected to the crossbeam at the top of the outer door frame (1).

2. The self-swapping mechanism for underground equipment power battery pack according to claim 1, characterized in that: The fork frame assembly (2) is provided with a fork frame (5) fixedly mounted in the middle of one side of a main roller assembly (6), and one end of the fork frame (5) is fixedly connected to one end of a connecting plate of the main roller assembly (6).

3. The self-replacement mechanism of the underground equipment power battery pack according to claim 1 is characterized in that: The movable pulley assembly (3) comprises a lifting cylinder (8), a sprocket seat (9), a sprocket (10) and a drag chain (11); the bottom of the lifting cylinder (8) is threadedly connected to the inner side of the middle of the bottom of the outer door frame (1) via bolts; and the rod head sprocket seat (9) of the piston rod of the lifting cylinder (8) is threadedly connected via bolts.

4. The underground equipment power battery pack self-replacement mechanism according to claim 3, characterized in that: The sprocket (10) is sleeved on the outside of the sprocket seat (9) and the two are rotatably connected. A groove is provided in the middle of the outside of the sprocket (10), and the drag chain (11) is wound in the groove on the outside of the sprocket (10).

5. The self-replacement mechanism of the power battery pack of underground equipment according to claim 4, characterized in that: A fixing plate is fixedly installed at the bottom of the inner side of the outer door frame (1), one end of the drag chain (11) is fixedly connected to one end of the fixing plate of the outer door frame (1), and the other end of the drag chain (11) is fixedly connected to the fork frame (5).

6. The underground equipment power battery pack self-replacement mechanism according to claim 1, characterized in that: The latch assembly (4) comprises an oil cylinder (12), a latch (13) and a hinge shaft (14); piston rods at both ends of the oil cylinder (12) are hingedly connected to the latch (13) via the hinge shaft (14).

7. The underground equipment power battery pack self-replacement mechanism according to claim 6, characterized in that: The two ends of one side of the oil cylinder (12) are fixedly connected to the inner side of the cross beam of the outer door frame (1) through a fixing block, and the two ends of the outer door frame (1) away from the fork frame assembly (2) are provided with mounting plates and a plurality of threaded through holes are opened on the mounting plates.

Images