Dual-control hydraulic lock

Abstract

The utility model discloses a dual-control hydraulic lock and belongs to the technical field of automobile parts. The utility model aims to design a dual-control hydraulic lock which can be controlled manually and hydraulically. The hydraulic lock comprises a lock hook, a lock hole and an induction plug-in device, a plug-in head is arranged at the outer end of the induction plug-in device, two hydraulic lock shells are fixed through pins, the lock hook and a lock hook shifting seat at the lower end are integrated, and the joint of the lock hook and the lock hook shifting seat is connected to a lock body shaft through a shaft. The locking device is easy to operate and convenient to use, two control modes are integrated on one device, controllability is increased, double insurance is also increased, and locking or unlocking work can be completed even if one control structure is damaged. In addition, by improving the locking mode, the safety of the locking state is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts. Background Art

[0002] Vehicles with flippable cabs are equipped with a cab flip lock. During normal use, the lock locks the cab and frame together. When the cab needs to be flipped, the lock releases the cab and frame, allowing for smooth flipping, making it easier for maintenance personnel to maintain and inspect components such as the engine under the cab. These locks can be broadly classified into hydraulic locks and manual locks, but they all essentially lock or unlock by adjusting the lock hook. Therefore, controlling the lock hook plays a crucial role in safety. Summary of the Invention

[0003] The purpose of the utility model is to design a double-control hydraulic lock which can be controlled manually and hydraulically.

[0004] The utility model comprises a lock hook, a lock hole, an inductive plug device, a plug connector at the outer end of the inductive plug device, two hydraulic lock shells are fixed by a pin, the lock hook and the lock hook toggle seat at the lower end are integrated, the lock hook and the lock hook toggle seat are connected to the lock body shaft at the connection point, the two ends of the lock body shaft are installed on the two hydraulic lock shells, a lock body reset spring is sleeved on the lock body shaft, one end of the lock body reset spring is clamped in the lower pin shaft sleeve, and the other end is clamped on the upper surface of the lock hook toggle seat; the two ends of the fork pin shaft are installed on the two hydraulic lock shells, the fork is connected to the fork on the fork pin shaft, and one end of the fork is clamped on the upper surface of the lock hook toggle seat; The lock hook is on the upper surface of the toggle seat, and a manual toggle pin is installed on the other end of the seat. A toggle fork return spring is installed on the toggle pin shaft. One end of the toggle fork return spring is clamped on the upper pin sleeve, and the other end is hooked on one end of the toggle seat of the toggle seat corresponding to the lock hook of the toggle fork; an oil cylinder mounting seat is installed on the hydraulic lock housing, and the oil cylinder body is installed on the oil cylinder mounting seat, the top of the oil cylinder piston rod is under the tail end of the toggle fork, and the lower end of the oil cylinder is the oil inlet and outlet; there are induction plug-in devices corresponding to the extreme position of the lock hook opening and the extreme position when the tail end of the toggle fork is opened, and the induction plug-in device is installed on the hydraulic lock housing.

[0005] The utility model is simple to operate and easy to use. By integrating two control modes into one device, the controllability is increased and double insurance is provided. Even if one control structure is damaged, the locking or opening operation can still be completed. In addition, the improvement of the locking form increases the security of the locked state. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0007] Figure 2 This is a schematic diagram of the internal structure of the utility model with one side of the hydraulic lock housing removed;

[0008] Figure 3 It is a schematic diagram of a special-shaped part composed of a lock hook and a lock hook toggle seat of the utility model. DETAILED DESCRIPTION

[0009] The present invention includes a lock hook 4, a lock hole 5, an inductive plug device 17, and a plug connector 2 at the outer end of the inductive plug device 17. The lock hook 4 and the lock hole 5 are on the outside for locking the matching lock body structure of the cab and the vehicle body. Most of the existing equipment has this structural form from the outside. The inductive plug device 17 is an electronic induction device. The present invention adopts two, one for sensing the limit state when the lock hook 4 is opened, representing that the lock hook 4 is completely out of the lock hole 5, and the other for sensing the limit state when the shift fork 12 is out of the lock hook toggle seat 14. The plug connector 2 is the external plug connector of the inductive plug device 17.

[0010] The two hydraulic lock housings 3 are fixed by pins, the lock hook 4 and the lock hook toggle seat 14 at the lower end are integrated, the lock hook 4 and the lock hook toggle seat 14 are connected to the lock body shaft 16 at the connection point, and the lock body shaft 16 is installed at both ends on the two hydraulic lock housings 3. A lock body reset spring 15 is set on the lock body shaft 16, and one end of the lock body reset spring 15 is stuck in the lower pin sleeve 13, and the other end is stuck on the upper surface of the lock hook toggle seat 14; both ends of the fork pin shaft 8 are installed on the two hydraulic lock housings 3, and a fork 12 is connected to the fork pin shaft 8. One end of the fork 12 corresponds to the upper surface of the lock hook toggle seat 14, and the end of the other end corresponds to the upper surface of the lock hook toggle seat 14. A manual detent 1 is installed, and a detent return spring 7 is mounted on the detent pin shaft 8. One end of the detent return spring 7 is clamped on the upper pin sleeve 18, and the other end is hooked on one end of the lock hook toggle seat 14 corresponding to the detent 12; a cylinder mounting seat 11 is installed on the hydraulic lock housing 3, and the cylinder body 10 is installed on the cylinder mounting seat 11. The top of the cylinder piston rod 9 is pressed under the tail end of the detent 12, and the lower end of the cylinder is the oil inlet and outlet 6; there are induction plug devices 17 corresponding to the extreme position of the opening of the lock hook 4 and the extreme position when the tail end of the detent 12 is opened, and the induction plug device 17 is installed on the hydraulic lock housing 3.

[0011] The hydraulic lock housing 3 is made of two pieces. After being fixed by pins, the lock hole 5 is placed in the middle of the upper end of the hydraulic lock housing 3. After the two pieces of the hydraulic lock housing 3 are buckled together, there is space around them (see Figure 1 , the manual pin 1 shows two positions), the lock hook 4 and the lock hook toggle seat 14 can be processed and formed at one time, the lock hook 4 and the lock hook toggle seat 14 are a special-shaped part, see Figure 3 There are four marked parts: first, part A that contacts the left-side inductive plug-in device 17; second, part B that matches the locking function with the lock hole 5; third, a raised part M for the locking function that is used to press the lock hook 4 back by external force; and fourth, part N where the shift fork 12 is pressed against for locking positioning.

[0012] First, the portion A in contact with the left inductive plug device 17: When the lock hook 4 needs to be opened, the lock hook 4 will rotate leftward with the lock body axis 16 as the axis until the portion A of the lock hook 4 contacts the left inductive plug device 17, and is in a fully open state.

[0013] Second, part B that matches the locking function with the lock hole 5: This part is that the interior of the lock hook 4 is arc-shaped, which matches the lock hole 5 and completes the locking after being buckled. This structure already exists.

[0014] Third, the locking hook 4 is used to press the hook lock back by external force. The protruding part M of the hook lock function: in the first part form, this part is located at the bottom of the lock hole 5 and extends out. In this way, when the lock hook 4 and the lock hole 5 need to be locked together, the main bar (usually installed on the vehicle body, used to buckle the cab and the vehicle body) will press this part first when it is placed in the lock hole 5, so that the special-shaped part composed of the lock hook 4 and the lock hook toggle seat 14 rotates until the special-shaped part is in the Figure 2 Locking form.

[0015] Fourth, the shift fork 12 presses against the locking position N: when the special-shaped piece in the third step is in the locked state, the shift fork 12 will be stuck here to prevent the special-shaped piece from opening due to the elastic force of the lock body reset spring 15.

[0016] The lock hook 4 corresponds to the lock hole 5 and is used to lock or open the cab and the vehicle body. The lock hook toggle seat 14 is placed between the two hydraulic lock shells 3. The lock hook 4 and the lock hook toggle seat 14 are installed on the hydraulic lock shell 3 through the lock body shaft 16 and can rotate around the lock body shaft 16. The lock body reset spring 15 is a spring that resets the lock hook 4 and the lock hook toggle seat 14 when they are unlocked ( Figure 2 The middle lock body return spring 15 is in a compressed state), that is, when the shift fork 12 is released from the restriction on the lock hook toggle seat 14, the lock hook 4 is tilted back and contacts the left inductive plug device 17, and the raised portion (M position) on the upper surface of the lock hook toggle seat 14 is at the lower end position of the lock hole 5. At this time, the unlocking state is completed and the cab can be separated from the vehicle body.

[0017] When locking is required, the main bar squeezes the raised part M of the special-shaped part, causing the special-shaped part to rotate to the right with the lock body axis 16 until the lock hook 4 hooks the main bar, and then the shift fork 12 is turned and pressed against the N part of the lock hook toggle seat 14, thereby locking the cab and the vehicle body.

[0018] The shift fork 12 is moved in two ways: a manual shift pin 1 and a cylinder shift pin 9. The manual shift pin 12 requires more force than the cylinder shift pin 9. Therefore, when the cylinder is in normal condition, the cylinder shift pin 12 is usually used. Figure 2As can be seen, the shift fork 12 is similar to an L shape. One end is used to push the locking hook toggle seat 14, and the other end is used for toggling. The shift fork 12 rotates around the shift fork pin shaft 8 in the middle. An induction plugging device (right-side induction plugging device) is installed on the hydraulic lock housing 3 corresponding to the tail end of the shift fork 12. When the shift fork 12 is in the open state, this induction plugging device is used to sense and limit the maximum open position of the shift fork 12 (fully open, that is, the front end of the shift fork 12 is completely disengaged from the locking hook toggle seat 14). The shift fork return spring 7 assists the shift fork 12. When the shift fork 12 is opened, the shift fork return spring 7 will be contracted and have elasticity. When the shift fork 12 needs to return to lock the locking hook toggle seat 14, under the return force of the shift fork return spring 7, it is extremely easy to be located at the N part of the locking hook toggle seat 14 ( Figure 2 is the locking state of the locking hook, and at this time the shift fork return spring 7 is in a relaxed state).

[0019] The lower end of the oil cylinder is the oil inlet and outlet 6 that extends out from between the two hydraulic lock housings 3, facilitating the connection of the oil supply device of the oil cylinder.

Claims

1. A dual-control hydraulic lock, comprising a lock hook (4), a lock hole (5), an induction plugging device (17), and the outer end of the induction plugging device (17) is a plug connector (2), characterized in that: Two hydraulic lock housings (3) are fixed by pins. The lock hook (4) and the lock hook actuating seat (14) at the lower end are integrated. The connection between the lock hook (4) and the lock hook actuating seat (14) is axially connected to the lock body shaft (16). Both ends of the lock body shaft (16) are installed on the two hydraulic lock housings (3). A lock body return spring (15) is sleeved on the lock body shaft (16). One end of the lock body return spring (15) is clamped on the lower pin bushing (13), and the other end is clamped on the upper surface of the lock hook actuating seat (14). Both ends of the fork pin (8) are installed on the two hydraulic lock housings (3). A fork (12) is axially connected to the fork pin (8). One end of the fork (12) corresponds to the upper surface of the lock hook actuating seat (14), and a manual pin (1) is installed at the end of the other end. A fork return spring (7) is sleeved on the fork pin (8). One end of the fork return spring (7) is clamped on the upper pin bushing (18), and the other end is hooked on one end of the fork (12) corresponding to the lock hook actuating seat (14). An oil cylinder mounting seat (11) is installed on the hydraulic lock housing (3). The oil cylinder body (10) is installed on the oil cylinder mounting seat (11). The top of the oil cylinder piston rod (9) abuts against the lower surface of the tail end of the fork (12). The lower end of the oil cylinder is the oil inlet and outlet (6). Inductive plugging devices (17) are provided at the limit positions corresponding to the opening of the lock hook (4) and the opening of the tail end of the fork (12). The inductive plugging devices (17) are installed on the hydraulic lock housing (3).

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