Battery swapping locking mechanism

Abstract

The utility model discloses a kind of battery replacement locking mechanisms, including locking pin seat, with the locking pin seat cooperation locking pin, with the operating lever of locking pin connection, drive operating lever rotation hand wheel and operating lever seat, the operating lever is with operating lever seat screw cooperation, the front end of the operating lever is with locking pin rotation cooperation.The utility model principle: the extension of locking pin is controlled by operating lever, and is matched with the locking pin hole arranged in the bottom of battery replacement module assembly, the locking and unlocking demand of battery replacement module assembly is realized;And the retention of locking state is realized by the thread engagement of operating lever and operating lever seat, in the operation process, the propulsion of locking pin is by manpower through screw pair transmission, and locking is first screw pair work in place, then using self-locking type thread friction self-locking principle to provide stable support.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery, and in particular to a locking mechanism for battery swapping of trackless mining vehicles in underground mines. Background Technology

[0002] Currently, in the field of engineering machinery, the overall locking mechanism of the battery swapping module assembly of swappable pure electric vehicles can be divided into electric locking, pneumatic locking, and mechanical locking. Electric locking is achieved by a motor driving a pin into a pin hole or by a solenoid valve driving a lock cylinder into the lock body; pneumatic locking uses a cylinder to push a pin into a pin hole or to rotate the lock tongue to achieve locking; mechanical locking mainly utilizes the relative movement of its components to achieve locking, such as a circumferentially distributed lock tongue mechanism, where the lock tongue assembly contains multiple lock tongues distributed circumferentially around the lock tongue seat axis, and is driven by a sliding member to slide radially to achieve abutment and locking with the lock sleeve; a torsion lock assembly, where rotating the torsion lock handle fixes the lock head at a 90-degree or 70-degree angle position, putting the torsion lock in a locked state, thus achieving locking; and a spring lock pin mechanism, where the extension and contraction of a spring achieves linear movement of the lock pin, which, in conjunction with a specific slot limit, achieves locking.

[0003] Electric and pneumatic locking systems are relatively expensive due to the presence of motors, cylinders, and related cables and pipes. They also occupy space, increasing the complexity of the overall layout and requiring additional electrical or pneumatic interfaces. Furthermore, humid environments increase the risk of corrosion to electrical components. Existing mechanical locking systems, such as the circumferentially distributed latch mechanism, require high machining precision due to the assembly of multiple latches with latch seats. Additionally, the latch movement requires hydraulic cylinders. Twist lock assemblies need to be placed at the four corners of the object being fixed, with sufficient operating space for the operator to manually rotate the latch to engage with the corner seats with insertion holes. This operation is cumbersome and unsuitable for situations where locking points cannot be located at the four corners. Spring-loaded locking mechanisms rely primarily on the spring's own force for locking. The locking force is limited by the spring's performance, and in vibrating environments, the spring repeatedly experiences impacts, increasing the risk of fatigue failure. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a battery swapping locking mechanism that is safe, reliable, easy to process, and achieves locking through a purely mechanical structure; it has strong resistance to vibration and impact, is easy to operate, requires no specific operating space, and can be used in humid and vibrating environments.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a battery swapping locking mechanism, including a locking pin seat, a locking pin that cooperates with the locking pin seat, an operating rod connected to the locking pin, a handwheel that drives the operating rod to rotate, and an operating rod seat. The operating rod is threadedly engaged with the operating rod seat, and the front end of the operating rod is rotatably engaged with the locking pin. The principle of this utility model is as follows: the operating rod controls the extension and retraction of the locking pin, which cooperates with the locking pin hole located at the bottom of the battery swapping module assembly to achieve the locking and unlocking requirements of the battery swapping module assembly. The locking state is maintained by the threaded engagement between the operating rod and the operating rod seat. During operation, the advancement of the locking pin is driven manually through a helical pair, while locking is achieved by first the helical pair reaching its position, and then by utilizing the self-locking thread friction self-locking principle to provide stable support.

[0006] As an improvement, the battery swapping locking mechanism is used to lock the battery swapping module assembly of the underground trackless mining vehicle to the front frame.

[0007] As an improvement, the operating lever includes a rod and a sleeve fitted on the rod. The operating lever seat includes a fixed plate and a cylindrical nut located in the middle of the fixed plate. The sleeve is inserted into the cylindrical nut and threadedly engaged with it. The front end of the rod is rotatably engaged with a locking pin.

[0008] As an improvement, the locking pin is composed of a small diameter section and a large diameter section. The end face of the large diameter section is provided with a groove, and a bidirectional thrust bearing is provided in the groove. The bearing is sealed in the groove by a pin cover plate. The front end of the rod is provided with a rod baffle, which is located in the groove. The rod baffle and the bidirectional thrust bearing cooperate to achieve a rotatable connection.

[0009] As an improvement, the handwheel is fixed to the rear end of the rod by a set screw, and the rod stop is fixed to the front end of the rod by an internal hex screw.

[0010] As an improvement, a limit switch for detecting the position of the locking pin is also included, which is connected to the locking indicator light.

[0011] The beneficial effects of this utility model compared with the prior art are:

[0012] 1) The locking mechanism is safe and reliable, the components are easy to process, and the locking is achieved through a purely mechanical structure;

[0013] 2) The locking mechanism is easy to arrange and is operated by a handwheel. It converts rotational force into linear thrust, making it simple to operate. The use of a two-way thrust bearing isolates the operating lever from the locking pin, allowing only axial transmission and saving effort in operation.

[0014] 3) The locking mechanism is driven by a screw pair, which has a large propulsion force. After locking into place, it is self-locked by the thread, with a large locking force, and can be used in humid and vibrating environments;

[0015] 4) The locking mechanism is simple and independent, and easy to expand. In addition to being arranged at multiple points according to needs, it can also be expanded to have other functions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the locking mechanism.

[0017] Figure 2 This is an exploded view of the joystick.

[0018] Figure 3 This is a schematic diagram of the control lever seat.

[0019] Figure 4 This is an exploded view of the locking pin.

[0020] Figure 5 This is a cross-sectional view of the locking pin.

[0021] Figure 6 This is a schematic diagram of a locking pin mechanism applied to the front frame.

[0022] Figure 7 This is a schematic diagram of the locking state of the locking pin.

[0023] Figure 8 This is a schematic diagram showing the interaction between the locking pin and the limit switch.

[0024] Figure 9 This is a schematic diagram of the battery swapping module assembly on the front frame. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 5As shown, a battery swapping locking mechanism includes a locking pin seat 10, a locking pin 1 that mates with the locking pin seat 10, a limit switch 15 for detecting the position of the locking pin 1, an operating rod connected to the locking pin 1, a handwheel 5 that drives the operating rod to rotate, and an operating rod seat 3. The operating rod seat 3 is mainly used to mate with the operating rod and provide a point of force for locking the operating rod; the operating rod seat 3 is welded from a fixing plate 31 and a cylindrical nut 32. The cylindrical nut 32 has an internal thread that mates with the external thread on the operating rod, providing a pushing force and a locking force for the locking mechanism. The operating rod includes a rod 2 and a rod sleeve 4 fitted on the rod 2; the rod sleeve 4 is a hollow cylindrical structure with different sizes at both ends. One end of the rod sleeve 4 has an external thread and is connected to the operating rod seat 3. The rod sleeve 4 is welded to the rod 2 to form the main body of the operating rod; the front end of the rod 2 is rotatably engaged with the locking pin through a rod baffle 6. The rear end face of the rod 2 is provided with a set screw anti-slip hole, and the handwheel 5 is fixed to the rear end of the rod 2 by the set screw; the front end face of the rod 2 is provided with a threaded hole for an internal hexagon screw, and the rod baffle 6 is fixed to the front end of the rod 2 by an internal hexagon screw. The diameter of the front end of the rod 2 is smaller than the diameter of the rod body, forming a journal for subsequent installation of bearings, while the rod baffle 6 is used for bearing positioning. The locking pin consists of a small diameter section 11 and a large diameter section 12. The end face of the large diameter section 12 is provided with a groove 13. A bidirectional thrust bearing 7 is provided in the groove 13. The bearing 7 is sealed in the groove 13 by a pin cover plate 14. The rod baffle 6 is provided in the groove 13, and the rod baffle 6 and the bidirectional thrust bearing 7 cooperate to achieve a rotatable connection. The locking pin 1 can extend and retract with the push and pull of the operating rod, but is not affected by the rotation of the operating rod. In this way, the force of the operating rod to control the locking pin is not large, and it can also prevent the operating rod from not moving due to the locking pin jamming. It also reduces the wear between the locking pin and the pin cylinder 9. The small diameter section 11 of the locking pin is solid and is the working section that cooperates with the pin hole on the pin seat 10 installed at the bottom of the battery swapping module assembly.

[0027] like Figures 6 to 8As shown, the locking mechanism is used to lock the battery swapping module assembly 16 of the underground trackless mining car to the front frame 8. Based on the weight and installation requirements of the battery swapping module assembly 16 of the underground mining car, two sets of locking mechanisms are used to meet its battery swapping locking needs. The two sets of locking mechanisms are installed independently, distributing the working load and providing redundancy. Considering the installation position of the battery swapping module assembly 16, the two sets of locking mechanisms are arranged below the bottom plate of the battery swapping module assembly 16 mounting compartment, in the lateral direction of the vehicle, with the operating handwheel 5 facing the right side of the front frame 8 for easy operation. The main body of the locking mechanism is mounted on the front frame 8 via a pin cylinder 9 that cooperates with it and is located on the bottom plate of the battery swapping module assembly 16 mounting compartment, and an operating compartment, while the locking pin seat 10 is located at the bottom of the battery swapping module assembly 16. The pin cylinder 9 is fixed to the front frame 8 by welding to the operating compartment. The operating compartment has a welded nut on its back, and the operating lever seat 3 is connected to the operating compartment 81 by screws. The pin cylinder 9 has a threaded hole. When the locking pin 1 is placed in the pin cylinder 9, the cover plate of the pin cylinder 9 is fixed to the end face of the pin cylinder 9 near the operating lever by screws, forming the working cavity of the locking pin. The corresponding frame end of the pin cylinder 9 near the locking pin seat 10 has a working hole that mates with the small diameter section 11 of the locking pin, allowing the locking pin to extend and retract, and restricting the other four degrees of freedom of the locking pin. The limit switch 15 is mounted on the front frame 8 via a bracket. The limit switch 15 is correspondingly set to the locking pin. When the locking pin 1 extends, it triggers the limit switch 15. The limit switch 15 is connected to a locking indicator light on the side of the battery swapping module assembly 16, and the working status of the locking pin is determined by the indicator light.

Claims

1. A battery swapping locking mechanism, characterized in that: It includes a locking pin seat, a locking pin that mates with the locking pin seat, an operating rod connected to the locking pin, a handwheel that drives the operating rod to rotate, and an operating rod seat. The operating rod is threadedly engaged with the operating rod seat, and the front end of the operating rod is rotatably engaged with the locking pin.

2. The battery swapping locking mechanism according to claim 1, characterized in that: The battery swapping locking mechanism is used to lock the battery swapping module assembly of the underground trackless mining vehicle to the front frame.

3. The battery swapping locking mechanism according to claim 1, characterized in that: The operating lever includes a rod and a sleeve fitted on the rod. The operating lever seat includes a fixed plate and a cylindrical nut located in the middle of the fixed plate. The sleeve is inserted into the cylindrical nut and threadedly engaged with it. The front end of the rod is rotatably engaged with a locking pin.

4. The battery swapping locking mechanism according to claim 3, characterized in that: The locking pin consists of a small diameter section and a large diameter section. The end face of the large diameter section is provided with a groove. A bidirectional thrust bearing is provided in the groove. The bearing is sealed in the groove by a pin cover plate. The front end of the rod is provided with a rod baffle, which is located in the groove. The rod baffle and the bidirectional thrust bearing cooperate to achieve a rotatable connection.

5. A battery swapping locking mechanism according to claim 4, characterized in that: The handwheel is fixed to the rear end of the rod by a set screw, and the rod stop is fixed to the front end of the rod by an internal hex screw.

6. The battery swapping locking mechanism according to claim 1, characterized in that: It also includes a limit switch for detecting the position of the locking pin, the limit switch being connected to the locking indicator light.

Images