A locking device for a vehicle cargo bed to a frame and method of use

Abstract

The application discloses a locking device for a vehicle cargo compartment and a vehicle frame and a use method thereof, and relates to the technical field of vehicle frames, which comprises a hanging shaft, a main shaft and a locking mechanism, wherein the locking mechanism comprises a hook, a push hook, a push rod and a cylinder, the hook is installed on the main shaft, the push hook is connected with the bottom of the hook, one end of the push rod is connected with one side of the push hook through a fixing seat, the other end of the push rod is provided with a connecting shaft, the cylinder is internally provided with a cylinder piston rod, the top of the cylinder is provided with an electromagnetic valve, the cylinder piston rod is connected with the connecting shaft, and a sensor is arranged on the fixing seat; and a control method of the device is also disclosed. The locking device realizes quick connection and separation between the vehicle cargo compartment and the vehicle frame, is simple to operate, eliminates the hidden danger of manual operation at the bottom of the cargo compartment, and improves work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of cargo compartment lock technology, specifically a locking device and its usage method for the connection between the cargo compartment and the vehicle frame. Background Technology

[0002] Cargo-hulled vehicles are commonly used for transporting goods. The locking device between the cargo compartment and the chassis is typically located on the chassis, primarily consisting of latches located at the bottom of the cargo compartment that engage with the locking device on the chassis. In related technologies, the locking and unlocking process between the cargo compartment and the chassis requires manual operation at the bottom of the cargo compartment. Due to limited working space under the vehicle, this is difficult to perform, and manual operation poses safety hazards when the vehicle is fully loaded. Summary of the Invention

[0003] The object of the present invention is to provide a locking device for the cargo compartment and the frame of a vehicle, so as to solve at least one aspect of the problems and defects mentioned in the background art.

[0004] The present invention also provides a method for using the above-described locking device.

[0005] Specifically, the first aspect of the present invention discloses a locking device for connecting a vehicle cargo compartment and a vehicle frame, comprising a hanger shaft, a main shaft, and a locking mechanism, wherein the locking mechanism includes:

[0006] A hook, which is mounted on the main shaft;

[0007] A push-hanger is connected to the bottom of the hook.

[0008] A push rod, one end of which is connected to one side of the push hanger via a fixed base; the other end of the push rod is provided with a coupling;

[0009] A cylinder, wherein a cylinder piston rod is provided inside the cylinder, and a solenoid valve is provided on the top of the cylinder; the cylinder piston rod is connected to the coupling.

[0010] The mounting base is equipped with a sensor.

[0011] The locking device for the vehicle cargo compartment and frame according to the present invention has at least the following advantages:

[0012] The locking device uses a hook of the locking mechanism to lock and unlock the hanging shaft at the bottom of the cargo compartment. The locking mechanism is electrically controlled to push the hook to perform locking and unlocking, realizing the quick connection and separation between the vehicle cargo compartment and the frame. It is simple to operate, does not require manual work at the bottom of the cargo compartment, eliminates safety hazards, and improves work efficiency.

[0013] As a further embodiment of the present invention: the bottom inner wall of the hook is provided with a first curved surface and a second curved surface, the bottom of the push-hanger is provided with an upwardly concave inclined surface, and the top of the push-hanger is provided with a groove.

[0014] Because the bottom inner wall of the hook has a first curved surface and a second curved surface, the bottom of the push hook has an upwardly concave slope. When the push rod pushes the push hook in the forward direction, the push hook moves in the forward direction. When the top of the push hook couples with the second curved surface of the bottom inner wall of the hook, the hook moves upward, allowing the hook to rotate around the main shaft. When the hook rotates to the hanging shaft position, the hanging shaft enters the hook, and the two abut against each other.

[0015] As the pusher continues to move forward, the bottom of the pusher gradually changes from an inclined plane to a flat plane, coupling with the first curved surface of the hook's bottom. At this point, a downward pulling force is generated on the hook, causing it to tighten and firmly lock the hanging shaft inside. This structure allows the hook to rotate and move up and down on the pusher, thereby locking or unlocking the hanging shaft.

[0016] As a further embodiment of the present invention: the upper part of the push rod is connected to a locking rod via a connecting block.

[0017] As a further embodiment of the present invention: the hook has a recessed hole in the middle, and the locking rod is adapted to the recessed hole.

[0018] Because a locking lever is provided on the upper part of the push rod and a recessed hole is provided in the middle of the hook, the locking lever is adapted to the recessed hole. When a locking operation is required, the cylinder piston rod drives the locking lever to extend forward into the recessed hole of the hook, further realizing the locking state of the hook and enhancing the stability of the hook locking the hanging shaft.

[0019] As a further embodiment of the present invention: a cylinder locking pin is provided at one end of the cylinder.

[0020] Because a cylinder locking pin is provided at one end of the cylinder, the cylinder locking pin automatically locks the cylinder piston rod after the locking mechanism is locked in place, preventing the locking mechanism from loosening and making it safer and more stable.

[0021] As a further embodiment of the present invention: the locking mechanism is composed of several groups, and each group of locking mechanisms is provided with at least one hook.

[0022] Since the locking mechanism consists of several groups, each group of locking mechanisms is equipped with at least one hook, which is compatible with the hanging shafts at the bottom of the cargo hold to accommodate different numbers of hanging shafts at the bottom of the cargo hold. The number of hooks is set according to the number of hanging shafts.

[0023] As a further embodiment of the present invention: the sensors are divided into two groups for signal transmission, which respectively detect locking signals and unlocking signals.

[0024] Since the sensors transmit signals in two groups, detecting locking and unlocking signals respectively, when the locking or unlocking task is completed, the two groups of sensors can detect the locking and unlocking signals respectively to determine whether the vehicle cargo compartment and the frame are locked or unlocked in place.

[0025] A second aspect of the present invention also discloses a method of using a locking device for a vehicle cargo compartment and a vehicle frame, comprising the following steps:

[0026] S01. Open the solenoid valve in the forward direction, the cylinder delivers air in the forward direction, drives the cylinder piston rod to extend, pushes the push rod, and the hook rotates to the hanging shaft position;

[0027] S02, the cylinder drives the piston rod to extend forward, causing the hook to move downward;

[0028] S03, the cylinder drives the piston rod to extend forward, and the push rod drives the locking rod to move forward into the concave hole in the middle of the hook, so that the locking rod can mechanically lock the hook.

[0029] S04. The cylinder locking pin mechanically locks the cylinder piston rod. The sensor detects the locking position signal and the locking work is completed.

[0030] As a further embodiment of the present invention:

[0031] S001. Reverse opening of the solenoid valve drives the cylinder locking pin to mechanically unlock the cylinder piston rod. The cylinder piston rod retracts, driving the locking rod to move backward, thereby achieving mechanical unlocking of the hook by the locking rod.

[0032] S002, The cylinder drives the piston rod to continue retracting, causing the hook to move upward;

[0033] S003, the cylinder drive cylinder piston rod continues to retract, driving the hook to rotate to a position away from the hanging shaft;

[0034] S004, the cylinder piston rod retracts to the position, the sensor detects the unlocking signal, and the unlocking operation is completed.

[0035] This invention relates to a locking device for connecting a vehicle's cargo compartment to its frame. The locking mechanism is electrically controlled, with a cylinder piston rod pushing a push rod, which in turn pushes the hook in a linear motion. Because the hook's bottom structure cooperates with the push-hook structure, the hook can rotate around the main shaft to the hook axle position. As the push-hook continues to advance, it generates a downward pulling force on the hook, locking the hook axle. A sensor detects whether the locking is complete. The locking device can also be electrically unlocked, with the sensor detecting whether the unlocking is complete. This locking device enables rapid connection and separation between the vehicle's cargo compartment and frame. It is simple to operate, requires no manual work under the cargo compartment, eliminates safety hazards, and improves work efficiency. Attached Figure Description

[0036] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0037] Figure 1 A three-dimensional structural diagram of a locking device used between a vehicle cargo compartment and a vehicle frame;

[0038] Figure 2 This is a schematic diagram of the unlocked portion of a locking device used between a vehicle cargo compartment and a chassis.

[0039] Figure 3 This is a schematic diagram of the locked portion of a locking device used between a vehicle cargo compartment and a chassis.

[0040] Figure 4 This is a schematic diagram of the first curved surface structure of the hook;

[0041] Figure 5 This is a schematic diagram of the second curved surface structure of the hook;

[0042] Figure 6 This is a schematic diagram of the push-hanging structure;

[0043] Figure 7 This is a three-dimensional structural diagram of a locking device used between the cargo compartment and the chassis of a vehicle.

[0044] Figure label:

[0045] 101. Hanging shaft; 102. Main shaft; 103. Hook; 1031. First curved surface; 1032. Second curved surface; 104. Push hanger; 1041. Inclined surface; 105. Push rod; 1051. Connecting block; 106. Fixed seat; 107. Coupling; 108. Cylinder; 109. Solenoid valve; 110. Sensor; 111. Locking rod; 112. Concave hole; 113. Cylinder locking pin. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation thereof.

[0047] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0048] like Figure 1-7 The embodiment of the present invention shown provides a locking device for the connection between a vehicle cargo compartment and a vehicle frame. The device includes a hanging shaft 101 disposed at the bottom of the vehicle cargo compartment, a main shaft 102, and a locking mechanism disposed on the longitudinal beam of the vehicle frame. The locking mechanism includes: a hook 103 mounted on the main shaft 102; a push-hang 104 connected to the bottom of the hook 103; a push rod 105, one end of which is connected to one side of the push-hang 104 via a fixing seat 106; a coupling 107 disposed at the other end of the push rod 105; a cylinder 108 containing a cylinder piston rod, a solenoid valve 109 disposed at the top of the cylinder 108, and the cylinder piston rod connected to the coupling 107; and a sensor 110 disposed on the fixing seat 106.

[0049] The bottom inner wall of the hook 103 is provided with a first curved surface 1031 and a second curved surface 1032, and the bottom of the push-hanger 104 is provided with an upwardly concave inclined surface 1041.

[0050] Specifically, when the push rod 105 pushes the push hook 104 in the forward direction, the push hook 104 moves in the forward direction. When the top of the push hook 104 couples with the second curved surface 1032 of the bottom inner wall of the hook 103, the hook 103 moves upward, allowing the hook 103 to rotate around the main shaft 102. When the hook 103 rotates to the position of the hanging shaft 101, the hanging shaft 101 enters the hook 103, and the two abut against each other.

[0051] As the pusher 104 continues to move forward, its bottom gradually changes from an inclined plane 1041 to a flat plane, coupling with the curved bottom surface 1031 of the hook 103. This creates a downward pulling force on the hook 103, causing it to tighten and firmly lock the hanging shaft 101 within it. This structure allows the hook 103 to rotate and move up and down on the pusher 104, thereby locking or unlocking the hanging shaft 101.

[0052] When the cargo hold needs to be locked, the solenoid valve 109 is opened in the forward direction, and the cylinder 108 supplies air in the forward direction, driving the cylinder piston rod to extend and push the push rod 105. The hook 103 rotates to the position of the hanging shaft 101. The cylinder 108 drives the cylinder piston rod to extend forward further, causing the hook 103 to move downward. The cylinder 108 drives the cylinder piston rod to extend forward further, and the push rod 105 drives the locking rod 111 to move forward into the concave hole 112 in the middle of the hook 103, realizing the locking rod mechanically locking the hook. The cylinder locking pin 113 mechanically locks the cylinder piston rod, and the sensor 110 detects the locking position signal, completing the locking operation.

[0053] When the cargo compartment needs to be unlocked, the solenoid valve 109 is opened in reverse, driving the cylinder locking pin 113 to mechanically unlock the cylinder piston rod. The cylinder piston rod retracts, and the push rod 105 drives the locking rod 111 to move backward, realizing the mechanical unlocking of the hook by the locking rod. The cylinder 108 drives the cylinder piston rod to continue to retract, causing the hook 103 to move upward. The cylinder drives the cylinder piston rod to continue to retract, driving the hook 103 to rotate to a position away from the hanging shaft 101. When the cylinder piston rod retracts to the end, the sensor 110 detects the unlocking signal, completing the unlocking operation.

[0054] The locking device uses a hook 103 of the locking mechanism to lock and unlock the hanging shaft 101 at the bottom of the cargo compartment. The locking mechanism is electrically controlled to push the hook 103 to perform locking and unlocking, realizing the quick connection and separation between the vehicle cargo compartment and the frame. It is simple to operate, does not require manual work at the bottom of the cargo compartment, eliminates safety hazards, and improves work efficiency.

[0055] like Figure 1-4 As shown, a locking rod 111 is connected to the upper part of the push rod 105 via a connecting block 1051, and a recessed hole 112 is provided in the middle of the hook 103, with the locking rod 111 fitting into the recessed hole 112. Specifically, because the upper part of the push rod 105 is provided with a locking rod 111 and the middle of the hook is provided with a recessed hole, the locking rod fits into the recessed hole. When a locking operation is required, the cylinder piston rod drives the locking rod to extend forward into the recessed hole of the hook, further achieving the locking state of the hook and enhancing the stability of the hook locking the hanging shaft.

[0056] like Figure 1-3 As shown, a cylinder locking pin 113 is provided at the other end of the cylinder 108. Specifically, because the cylinder locking pin 113 is provided at the other end of the cylinder 108, after the locking mechanism is locked in place, the cylinder locking pin 113 automatically locks the cylinder piston rod, preventing the locking mechanism from loosening, making it safer and more stable.

[0057] As shown in the figure, the locking mechanism consists of several groups, and each group of locking mechanisms is equipped with at least one hook 103. Specifically, since the locking mechanism consists of several groups, and each group of locking mechanisms is equipped with at least one hook 103, it is adapted to the hanging shaft 101 at the bottom of the cargo hold to accommodate different numbers of hanging shafts 101 at the bottom of the cargo hold, and different numbers of hooks 103 are set according to the number of hanging shafts 101.

[0058] like Figure 1-3 As shown, the sensor 110 transmits signals in two groups, detecting locking and unlocking signals respectively. Specifically, since the sensor 110 transmits signals in two groups, detecting locking and unlocking signals respectively, when the locking or unlocking task is completed, the two groups of sensors 110 can detect the locking and unlocking signals respectively to determine whether the vehicle cargo compartment and the frame are properly locked or unlocked.

[0059] like Figure 7 As shown, the locking device can employ several sets of locking mechanisms, and the locking mechanisms can be implemented in two ways: one uses one cylinder to drive one hook to perform the action, and the other uses one cylinder to drive two hooks to perform the action. Each set of locking mechanisms can be used independently. This ensures that the locking device securely locks the cargo compartment while making full use of the space at the bottom of the vehicle frame.

[0060] In addition, the locking device has a manual unlocking function. When the solenoid valve 109 is in the neutral exhaust state or there is no pressure in the cylinder 108, the cylinder locking pin 113 on the cylinder 108 can be pulled out. At this time, the hook 103 can be unlocked by pulling it manually, ensuring that the locking device can be manually released in an emergency.

[0061] Another embodiment of the present invention discloses a method for using a locking device between a vehicle cargo compartment and a vehicle frame, comprising the following steps:

[0062] S01. Open the solenoid valve 109 in the forward direction, and the cylinder 108 supplies air in the forward direction, driving the cylinder piston rod to extend, pushing the push rod 105, and the hook 103 rotates to the position of the hanging shaft 101.

[0063] S02, Cylinder 108 drives the cylinder piston rod to continue to extend forward, causing hook 103 to move downward;

[0064] S03, the cylinder 108 drives the cylinder piston rod to continue to extend forward, and the push rod 105 drives the locking rod 111 to move forward into the concave hole 112 in the middle of the hook 103, so as to realize the locking rod mechanically locking the hook.

[0065] S04, the cylinder locking pin 113 mechanically locks the cylinder piston rod, and the sensor 110 detects the locking position signal, thus completing the locking operation.

[0066] S001, the solenoid valve 109 is opened in reverse, driving the cylinder locking pin 113 to mechanically unlock the cylinder piston rod. The cylinder piston rod retracts, and the push rod 105 drives the locking rod 111 to move backward, thereby realizing the mechanical unlocking of the hook by the locking rod.

[0067] S002, Cylinder 108 drives the cylinder piston rod to continue to retract, causing hook 103 to move upward;

[0068] S003, the cylinder drives the piston rod to continue to retract, driving the hook 103 to rotate to a position away from the hanging shaft 101;

[0069] S004, the cylinder piston rod retracts to the position, and sensor 110 detects the unlocking signal, completing the unlocking process.

[0070] This invention provides a locking device for the connection between a vehicle's cargo compartment and its frame. Through an electrically controlled locking mechanism, a cylinder piston rod pushes a push rod 105, which in turn pushes a hook 104 in a linear motion. Because the bottom structure of the hook 103 cooperates with the structure of the hook 104, the hook 103 can rotate around the main shaft 102 to the position of the hanging shaft 101. The hook 104 continues to move, causing the hook 103 to generate a downward pulling force, locking the hanging shaft 101. A sensor 110 detects whether the locking is complete. The locking device can be unlocked electrically, and the sensor 110 detects whether the unlocking is complete. This locking device enables rapid connection and separation between the vehicle's cargo compartment and its frame. It is simple to operate, requires no manual work at the bottom of the cargo compartment, eliminates safety hazards, and improves work efficiency.

[0071] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A locking device for a vehicle cargo compartment and a vehicle frame, comprising a hanger shaft (101), a main shaft (102) and a locking mechanism, characterized in that, The locking mechanism comprises: a hook (103) mounted on the main shaft (102); a push hook (104) connected to the bottom of the hook (103); a push rod (105) having one end connected to one side of the push hook (104) through a fixed seat (106); the other end of the push rod (105) is provided with a connecting shaft (107); a cylinder (108) provided with a cylinder piston rod inside; the top of the cylinder (108) is provided with an electromagnetic valve (109); the cylinder piston rod is connected to the connecting shaft (107); a sensor (110) is arranged on the fixed seat (106); the inner wall of the bottom of the hook (103) is provided with a first curved surface (1031) and a second curved surface (1032); the bottom of the push hook (104) is provided with an upwardly recessed inclined surface (1041); when the push rod pushes the push hook forward, the push hook moves forward; when the top of the push hook is coupled with the second curved surface of the inner wall of the bottom of the hook, the hook moves upward, so that the hook rotates around the main shaft; when the hook rotates to the hanging shaft position, the hanging shaft enters the hook, and the two abut against each other; the push hook continues to move forward; the bottom of the push hook is coupled with the first curved surface of the bottom of the hook, which is gradually changed from the inclined surface to the plane, so that a downward pulling force is generated on the hook, the hook is tightened, and the hanging shaft is locked in the hook.

2. A locking device for use between a vehicle cargo hold and a vehicle frame according to claim 1, characterized in that The upper part of the push rod (105) is connected with a locking rod (111) through a connecting block (1051).

3. A locking device for a vehicle cargo hold and a vehicle frame according to claim 2, characterized in that The middle part of the hook (103) is provided with a recess (112), and the locking rod (111) is matched with the recess (112).

4. A locking device for use between a vehicle cargo hold and a vehicle frame according to claim 3, characterized in that One end of the cylinder (108) is provided with a cylinder locking pin (113).

5. The locking device for use between a vehicle cargo hold and a vehicle frame according to claim 4, characterized in that, The locking mechanism comprises:

6. A locking device for use between a vehicle cargo hold and a vehicle frame according to claim 5, characterized in that the sensor (110) transmits signals in two groups, respectively detects locking signals and unlocking signals.

7. The method of using a locking device between a vehicle cargo bed and a frame of any of claims 1-6, wherein, The method comprises the following steps: S01, the electromagnetic valve (109) is opened forwardly, the cylinder (108) is forwardly supplied with gas, the cylinder piston rod is driven to extend out, the push rod (105) is pushed, and the hook (103) is rotated to the hanging shaft (101) position; S02, the cylinder (108) continues to drive the cylinder piston rod to extend forwardly, so that the hook (103) moves downwardly; S03, the cylinder (108) continues to drive the cylinder piston rod to extend forwardly, the push rod (105) drives the locking rod (111) to move forwardly to the recess (112) in the middle part of the hook (103), so that the locking rod mechanically locks the hook; S04, the cylinder locking pin (113) mechanically locks the cylinder piston rod, the sensor (110) detects the locking signal, and the locking work is completed.

8. The method of using a locking device between a vehicle cargo hold and a vehicle frame of claim 7, wherein, The method further comprises the following steps: S001, the electromagnetic valve (109) is opened reversely, the cylinder locking pin (113) is driven to mechanically unlock the cylinder piston rod, the cylinder piston rod is retracted, the push rod (105) drives the locking rod (111) to move backwardly, and the locking rod mechanically unlocks the hook; S002, the cylinder (108) drives the cylinder piston rod to continue to retract, and the hook (103) moves upward; S003, the cylinder drives the cylinder piston rod to continue to retract, and drives the hook (103) to rotate to a position away from the hanger shaft (101); S004, the cylinder piston rod retracts to the position, the sensor (110) detects the unlocking to the position signal, and the unlocking work is completed.

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