Mechanical unlocking mechanism for battery pack of back-camel type heavy truck

Abstract

The utility model provides a kind of back camel formula heavy truck battery pack mechanical unlocking mechanism, specifically includes locking mechanism, sub tow rope, main tow rope, tow transmission device, operating handle;The locking mechanism is provided with four, is separately installed in the upper surface four end portions of battery replacement bottom support;The sub tow rope is provided with four, one locking mechanism is communicated in one end, another end is communicated to tow transmission device;The tow transmission device is passed through transmission plate and is sent out one main tow rope after four sub tow ropes are converged, and then enters operating handle, operating handle is used for manual operation to complete the release or tightening of the main tow rope of transmission.The mechanical unlocking mechanism can be realized when car driving, steel wire rope system has no pressure, locking state will not be affected;Most importantly, no power requirement, can be unlocked in any occasion, and human operating force is moderate, locking is convenient, unlocking state is reliable, and it is convenient to promote.

Description

Technical Field

[0001] This utility model belongs to the technical field of heavy-duty truck battery swapping equipment, and in particular relates to a mechanical unlocking mechanism for a camel-shaped heavy-duty truck battery swapping pack. Background Technology

[0002] Currently, in the field of battery swapping for electric heavy-duty trucks, the commonly used battery pack is the backpack type, with the battery frame mounted on the undercarriage or chassis. See Figure 1-2 As shown, the battery pack is mounted on a back. The upper frame of the battery is locked to the base 12 with lock 11. The base is fixed to the frame with bolts. The battery pack is firmly fixed to the chassis of the vehicle. The battery pack provides the vehicle with driving power and starts to drive. In this way, the transportation work is successfully completed.

[0003] This type of battery pack uses its own weight to lock, and the entire system is locked when there is no external force. When a battery swap is needed, the driver sends an unlock signal, which activates the battery pack's hydraulic pump system. This hydraulic mechanism drives a push rod to lift the secondary lock, thus unlocking the battery. Unlocking is achieved hydraulically, allowing the battery pack to be detached from the vehicle for swapping.

[0004] Because hydraulic unlocking requires power, it cannot be done when there is a vehicle malfunction and no power is available. In addition, the battery pack is heavy (around 3 tons), and it cannot be removed without unlocking. To solve this problem, mechanical unlocking technology was developed. Summary of the Invention

[0005] Technical Solution: To solve the above-mentioned technical problems, this utility model provides a mechanical unlocking mechanism for a heavy-duty truck battery swapping pack, specifically including a locking mechanism, branch traction ropes, a main traction rope, a traction transmission device, and an operating handle; four locking mechanisms are provided, each independently installed at one of the four ends of the upper surface of the battery swapping base; four branch traction ropes are provided, each connected at one end to a locking mechanism and at the other end to the traction transmission device; the traction transmission device, through a transmission plate, merges the four branch traction ropes and transmits a main traction rope to the operating handle, which is used for manual operation to release or tighten the transmitted main traction rope.

[0006] As an improvement, the locking mechanism includes a lock body, a main lock tongue, a secondary lock tongue, a fixed pulley, a movable pulley, a traction rope fixing plate, and a support shaft; the lock body is composed of two spaced plates with a central slot; the main lock tongue is installed adjacent to the secondary lock tongue in the inner wall of the lock body, allowing it to contact and separate; the fixed pulley is a drive wheel installed at the bottom of the secondary lock tongue; the movable pulley is installed on one side of the fixed pulley; the traction rope fixing plate is installed between the fixed pulley and the secondary lock tongue, wherein the traction rope passes sequentially through the traction rope fixing plate, the fixed pulley, and the movable pulley to the traction transmission device.

[0007] As an improvement, it also includes a rotating shaft one, a rotating shaft two, a support shaft one, and a support shaft two; the rotating shaft two is installed in the middle and above the support shaft one and the support shaft two; the main lock tongue is installed on one side of the inner wall of the lock body through the rotating shaft two; the secondary lock tongue is installed on the inner wall of the lock body on the other side of the main lock tongue and close to the support shaft two through the rotating shaft one, wherein the installation position of the rotating shaft one is higher than the installation position of the rotating shaft two.

[0008] As an improvement, the main latch has a C-shaped structure, with the upper end being the main latch tongue and the lower end being the main latch tongue tail; the bottom structure of the secondary latch near the main latch is a concave-convex structure that matches the main latch tongue tail, and the top of the secondary latch is located on the side away from the main latch.

[0009] As an improvement, when the locking mechanism is locked, the tail of the main locking tongue abuts against the bottom of the secondary locking tongue and contacts the support shaft, while the tongue of the secondary locking tongue presses against the traction rope fixing plate.

[0010] As an improvement, when the locking mechanism is unlocked, the main locking tongue rotates in the opposite direction, separating the tail of the main locking tongue from the bottom of the secondary locking tongue and moving closer to the support shaft; the secondary locking tongue moves away from the traction rope fixing plate until it no longer contacts it.

[0011] As an improvement, the traction rope and main traction rope are made of steel wire rope.

[0012] Beneficial effects: Compared with the existing conventional heavy truck battery pack mechanical unlocking mechanism, the camel-back type proposed in this utility model can achieve no pressure on the wire rope system when the car is in motion, and will not affect the locking state; most importantly, it has no power requirement, can be unlocked in any situation, and the human operating force is moderate, locking is convenient, unlocking is reliable, and it is easy to promote. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a backpack-type battery box structure in the prior art.

[0014] Figure 2 This is a schematic diagram of a locking system in the prior art.

[0015] Figure 3 This is a schematic diagram of the locking system of this utility model.

[0016] Figure 4 This is a schematic diagram of the traction transmission device of this utility model.

[0017] Figure 5 The diagram shows the working states of the locking mechanism of this utility model, including (a) the locked state and (b) the unlocked state.

[0018] In the diagram: 11. Lock, base support; 12. Locking mechanism; 2. Sub-traction rope; 31. Main traction rope; 32. Traction transmission device; 4. Operating handle; 5. Lock body; 201. Main lock tongue; 202. Sub-lock tongue; 203. Main lock tongue; 204. Sub-lock tongue; 205. Rotating shaft two; 206. Rotating shaft one; 207. Traction rope fixing plate; 208. Movable pulley; 209. Fixed pulley; 210. Support shaft one; 211. Support shaft two; 212. Main lock tongue tail; 213. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the examples. These examples are used to illustrate this utility model, but are not intended to limit its scope.

[0020] A mechanical unlocking mechanism for a battery pack swapping device on a heavy-duty truck with a backrest design includes a locking mechanism 2, branch traction ropes 31, a main traction rope 32, a traction transmission device 4, and an operating handle 5. Four locking mechanisms 2 are provided, each independently installed at one end of the upper surface of the battery swapping base. Four branch traction ropes 31 are provided, each connected at one end to a locking mechanism 2 and at the other end to the traction transmission device 4. The traction transmission device 4, through a transmission plate, merges the four branch traction ropes 31 and transmits a main traction rope 32 to the operating handle 5. The operating handle 5 is used for manual operation to release or tighten the transmitted main traction rope 32.

[0021] To achieve manual locking, the locking mechanism has been improved as a specific embodiment of this utility model. Specifically, the locking mechanism 2 includes a lock body 201, a main lock tongue 202, a secondary lock tongue 203, a fixed pulley 210, a movable pulley 209, a traction rope fixing plate 208, and a support shaft 211. The lock body 201 consists of two spaced plates with a central slot. The main lock tongue 202 is installed adjacent to the secondary lock tongue in the inner wall of the lock body 201, allowing it to contact and separate. The fixed pulley 210 is a drive wheel installed at the bottom of the secondary lock tongue 203. The movable pulley 209 is installed on one side of the fixed pulley 210. The traction rope fixing plate 208 is installed between the fixed pulley 210 and the secondary lock tongue 203, wherein the traction rope 31 passes sequentially through the traction rope fixing plate 208, the fixed pulley 210, and the movable pulley 209 to the traction transmission device 4.

[0022] Furthermore, it also includes a first rotating shaft 207, a second rotating shaft 206, a first support shaft 211, and a second support shaft 212; the second rotating shaft 206 is installed between and above the first support shaft 211 and the second support shaft 212; the main locking bolt 202 is installed on one side of the inner wall of the lock body 201 via the second rotating shaft 206; the secondary locking bolt 203 is installed on the inner wall of the lock body 201 on the other side of the main locking bolt 202 and close to the second support shaft 212, wherein the installation position of the first rotating shaft 207 is higher than the installation position of the second rotating shaft 202.

[0023] In a specific implementation, the main latch 202 has a C-shaped structure, with the upper end being the main latch tongue 204 and the lower end being the main latch tongue tail 213; the bottom structure of the secondary latch 203 on the side near the main latch 202 is a concave-convex structure that matches the main latch tongue tail 213, and the top of the side away from the main latch 202 has a secondary latch tongue 205.

[0024] Furthermore, the traction rope 31 and the main traction rope 32 are steel wire ropes.

[0025] See Figure 5 As shown, (a) is the locked state, that is, when the operating handle 5 is not working, the locking mechanism 2 is in the locked state, the main locking tongue tail 213 abuts against the bottom of the secondary locking tongue 203 and contacts the support shaft 212, and the secondary locking tongue tongue 205 presses the traction rope fixing plate 208.

[0026] (b) is the unlocked state, that is, when the operating handle 5 is pressed down, the locking mechanism 2 is in the unlocked state, the main locking tongue 204 rotates in the opposite direction, taking away the tail 213 of the main locking tongue and the bottom of the secondary locking tongue 203 and moving closer to the support shaft 211; the secondary locking tongue 205 moves away from the traction rope fixing plate 208 until it no longer contacts it.

[0027] This invention relates to a device that, by connecting the main steel wire rope of the manual unlocking device, splits into four sections to achieve overall control of four locking devices. It can be operated by a single person to unlock all four locks. The unlocking force for a single locking mechanism is 75N. Through the steel wire rope, transmission device, and lever at the manual unlocking position, only 80-100N of pulling force is required to unlock all four locking mechanisms at the centralized manual unlocking position.

[0028] This device allows the wire rope system to operate without pressure while the car is in motion, ensuring the locking state remains unaffected. Furthermore, it requires no power, can be unlocked in any situation, requires only moderate manual operation, and offers convenient locking and reliable unlocking, making it easy to promote.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mechanical unlocking mechanism for a battery pack swapping system on a heavy-duty truck with a back-mounted design, characterized in that: It includes a locking mechanism (2), a branch traction rope (31), a main traction rope (32), a traction transmission device (4), and an operating handle (5); the locking mechanism (2) is provided in four parts, which are independently installed at the four ends of the upper surface of the battery swapping base; the branch traction rope (31) is provided in four parts, each of which is connected to a locking mechanism (2) at one end and to the traction transmission device (4) at the other end; the traction transmission device (4) connects the four branch traction ropes (31) through the transmission plate and transmits a main traction rope (32) into the operating handle (5), and the operating handle (5) is used to manually release or tighten the main traction rope (32) being transmitted.

2. The mechanical unlocking mechanism for the battery pack swapping of a heavy-duty truck as described in claim 1, characterized in that: The locking mechanism (2) includes a lock body (201), a main lock tongue (202), a secondary lock tongue (203), a fixed pulley (210), a movable pulley (209), a traction rope fixing plate (208), and a support shaft (211). The lock body (201) consists of two spaced plates with a central slot. The main lock tongue (202) is installed adjacent to the secondary lock tongue in the inner wall of the lock body (201) and can be contacted or separated. The fixed pulley (210) is a drive wheel installed at the bottom of the secondary lock tongue (203). The movable pulley (209) is installed on one side of the fixed pulley (210). The traction rope fixing plate (208) is installed between the fixed pulley (210) and the secondary lock tongue (203), wherein the traction rope (31) passes through the traction rope fixing plate (208), the fixed pulley (210), and the movable pulley (209) in sequence to the traction transmission device (4).

3. The mechanical unlocking mechanism for the battery pack swapping of a heavy-duty truck as described in claim 2, characterized in that: It also includes a first rotating shaft (207), a second rotating shaft (206), a first support shaft (211), and a second support shaft (212); the second rotating shaft (206) is installed in the middle and above the first support shaft (211) and the second support shaft (212); the main lock tongue (202) is installed on one side of the inner wall of the lock body (201) through the second rotating shaft (206); the secondary lock tongue (203) is installed on the inner wall of the lock body (201) on the other side of the main lock tongue (202) and close to the second support shaft (212), wherein the installation position of the first rotating shaft (207) is higher than the installation position of the second rotating shaft (207).

4. The mechanical unlocking mechanism for the battery pack swapping of a heavy-duty truck as described in claim 3, characterized in that: The main latch (202) has a C-shaped structure, with the upper end being the main latch tongue (204) and the lower end being the main latch tongue tail (213). The bottom structure of the secondary latch (203) near the main latch (202) is a concave-convex structure that matches the main latch tongue tail (213), and the top of the secondary latch tongue (205) is located away from the main latch (202).

5. The mechanical unlocking mechanism for the battery pack swapping of a heavy-duty truck as described in claim 4, characterized in that: When the locking mechanism (2) is locked, the tail of the main locking tongue (213) abuts against the bottom of the secondary locking tongue (203) and contacts the second support shaft (212), and the tongue of the secondary locking tongue (205) presses against the traction rope fixing plate (208).

6. The mechanical unlocking mechanism for the battery pack swapping of a heavy-duty truck as described in claim 4, characterized in that: When the locking mechanism (2) is unlocked, the main locking tongue (204) rotates in the opposite direction, separating the main locking tongue tail (213) from the bottom of the secondary locking tongue (203) and moving closer to the support shaft (211); the secondary locking tongue (205) moves away from the traction rope fixing plate (208) until it no longer contacts it.

7. The mechanical unlocking mechanism for the battery pack swapping of a heavy-duty truck according to any one of claims 1-6, characterized in that: The traction rope (31) and the main traction rope (32) are steel wire ropes.

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