A locking mechanism for preventing accidental locking of a cab

Abstract

The invention discloses a cab anti-mislock locking mechanism, comprising a lock body assembly and a bracket welding assembly matched with the lock body assembly; the lock body assembly comprises a mounting plate assembly, a hook assembly, a lock column assembly and a rocker arm assembly, the mounting plate assembly comprises two symmetrically arranged side mounting plates, a middle column pin lined in the middle of the two side mounting plates and a bottom pin lined at the bottom of the two side mounting plates; the rocker arm assembly is rotatably connected to the mounting plate assembly through the middle column pin, and the lock column assembly is rotatably connected to the rocker arm assembly through the column plate pin; the hook assembly comprises a hook sleeve rotatably sleeved on the bottom pin, a hanging plate sleeved on the hook sleeve and a hook spring sleeved on the hook sleeve, one end of the hook spring is hung on the hanging plate; the top groove of the hanging plate cooperates with the bottom column pin of the rocker arm assembly to form an anti-mislocking mechanism. It does not affect normal locking, but can effectively prevent the lock body from being mislocked, greatly improving the safety of vehicle driving.

Description

Technical Field

[0001] The invention belongs to the technical field of cab locking mechanisms, and in particular relates to a cab anti-mislocking locking mechanism. Background Art

[0002] The lock body assembly of traditional commercial vehicles is generally installed in the rear bracket of the cab, and forms a locking mechanism with the joystick assembly, the tie rod, and the U-shaped bracket welding assembly. In the process of locking the cab, by pressing the joystick, the short tie rod on the joystick drives the tie rod pin, the tie rod pin drives the sleeve-rocker arm, and the sleeve-rocker arm drives the lock hook assembly to rotate. When the lower part of the lock hook moves to contact the locking shaft pin of the U-shaped bracket welding assembly, the locking shaft pin hooks the lock hook, and the joystick continues to be pressed to pass the dead point of the lock body. The limit pin on the joystick moves to the limit slot of the limit arm to complete the locking. This creates a problem in the actual locking process: the cab will be skewed to a certain extent due to factors such as the torsion bar and the accumulated assembly tolerance, and the lock hook may not be able to hook the locking shaft pin, but the limit arm on the operating handle assembly can still be limited by the limit pin shaft on the operating handle to achieve locking; under certain circumstances, there will be a certain friction between the lock body assembly and the U-shaped bracket welding assembly, and the cab will not be able to overcome the friction force and automatically flip upward under the action of the torsion bar. In this case, the cab will mistakenly believe that the vehicle has been locked normally, but in fact it is locked by mistake. Later in the driving process, if the brakes are applied suddenly or the vehicle is driving on a bumpy road, the cab will automatically flip over, posing a huge threat to the driver. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies of the above-mentioned technology and provide a cab anti-mislocking locking mechanism, which does not affect normal locking and can effectively prevent the lock body from being mislocked, thereby greatly improving the safety of vehicle driving.

[0004] To achieve the above-mentioned purpose, the cab anti-mislocking locking mechanism designed by the present invention comprises a lock body assembly and a bracket welding assembly matched with the lock body assembly; the lock body assembly comprises a mounting plate assembly, a hook assembly, a lock column assembly and a rocker arm assembly; the mounting plate assembly comprises two symmetrically arranged side mounting plates, a middle column pin lined in the middle of the two side mounting plates and a bottom pin lined in the bottom of the two side mounting plates; the rocker arm assembly is rotatably connected to the mounting plate assembly through the middle column pin, and the lock column assembly is rotatably connected to the rocker arm assembly through the column plate pin;

[0005] The hook assembly includes a hook sleeve rotatably mounted on the bottom pin shaft, a hanging plate mounted on the hook sleeve and a hook spring mounted on the hook sleeve, one end of the hook spring is hung on the hanging plate; the top groove of the hanging plate cooperates with the bottom column pin of the rocker arm assembly to form an anti-mislocking mechanism.

[0006] Furthermore, the rocker arm assembly includes a rocker arm body, a rocker arm spring and a top pin shaft, the bottom column pin is lined between the two side arms of the rocker arm body, the side arms of the rocker arm body are rotatably sleeved on the middle column pin of the mounting plate assembly, one end of the rocker arm spring is fixed to the top edge of the transverse connecting plate of the column plate assembly, and the other end of the rocker arm spring is hung on the top fixing plate of the rocker arm body, one end of the top pin shaft is fixed to one side wall of the rocker arm body, and the other end of the top pin shaft passes through the other side wall of the rocker arm body.

[0007] Furthermore, the two column plate ends of the lock column assembly are rotatably connected to the two side arms of the rocker arm body through column plate pins.

[0008] Furthermore, the other end of the hook spring is limited by a limit pin welded on the side mounting plate.

[0009] Compared with the prior art, the present invention has the following advantages: the cab anti-mislocking locking mechanism of the present invention does not affect normal locking, but can effectively prevent the lock body from being mislocked, thereby greatly improving the safety of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the locking mechanism for preventing accidental locking of the cab of the present invention;

[0011] Figure 2 for Figure 1 Main view diagram of unlocked state;

[0012] Figure 3 for Figure 2 A side view schematic diagram of

[0013] Figure 4 for Figure 1 Main view diagram of unlocked state;

[0014] Figure 5 for Figure 4 Schematic side view of . DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1 The figure shows a cab anti-mislocking locking mechanism, including a lock body assembly and a bracket welding assembly 50 (a U-shaped bracket welding assembly) matched with the lock body assembly, the lock body assembly includes a mounting plate assembly 10, a hook assembly 20, a lock column assembly 30 and a rocker arm assembly 40, wherein the mounting plate assembly 10 includes two symmetrically arranged side mounting plates 11, a horizontal mounting plate 12 connecting the ends of the two side mounting plates 11, a middle column pin 13 lined in the middle of the two side mounting plates 11 and a bottom pin shaft 14 lined in the bottom of the two side mounting plates 11.

[0017] The lock column assembly 30 includes two symmetrically arranged column plates 31, a horizontal connecting plate 32 connecting the end surfaces of the two column plates 31, and a column plate column pin 33 connecting the bottoms of the two column plates 31. The rocker arm assembly 40 includes a rocker arm body 41, a bottom column pin 42 lined between the two side arms of the rocker arm body 41, a rocker arm spring 44, and a top pin shaft 43. The side arm of the rocker arm body 41 is rotatably sleeved on the middle column pin 13 of the mounting plate assembly, one end of the rocker arm spring 44 is fixed to the top edge of the horizontal connecting plate 32 of the column plate assembly 30, and the other end of the rocker arm spring 44 is hung on the top fixing plate of the rocker arm body 41. One end of the top pin shaft 43 is fixed to one side wall of the rocker arm body 41, and the other end of the top pin shaft 43 passes through the other side wall of the rocker arm body 41 until it is connected to the operating handle assembly; the ends of the two column plates 31 are rotatably connected to the two side arms of the rocker arm body 41 through the column plate pin shaft 34.

[0018] The hook assembly 20 includes a hook sleeve rotatably mounted on the bottom pin shaft 14, a hanging plate 21 mounted on the hook sleeve, and a hook spring 22 mounted on the hook sleeve. One end of the hook spring 22 is connected to the hanging plate 21 to limit the rotation of the hanging plate 21, and the other end of the hook spring 22 is limited by a limit pin 15 welded on the side mounting plate 11; at the same time, the top groove 23 of the hanging plate 21 cooperates with the bottom column pin 42 to form an anti-mislocking mechanism.

[0019] The rocker arm assembly 40 rotates around the middle column pin 13, the lock column assembly 30 rotates around the column plate pin 34, and the hook assembly 20 rotates around the bottom pin 14. Figure 2 , Figure 3 When the cab is turned up, the lock body is in the unlocked state, and the hook assembly 20 has a clockwise torsion force ( Figure 2 View direction), at this time, the top groove 23 of the hanging plate 21 of the hook assembly 20 hooks the bottom pin 42, and the operating handle assembly cannot move at this time, so that the lock body assembly will not be locked by mistake; combined Figure 4 , Figure 5 When the cab needs to be locked, the cab rotates downward around the front suspension bracket. If the cab is tilted, the hook assembly 20 cannot touch the upper part of the bracket welding assembly 50, and the lock body cannot be unlocked, thereby preventing accidental locking; if the cab is not tilted, the hook assembly 20 can touch the upper part of the bracket welding assembly 50, and the hook assembly 20 can rotate counterclockwise around the bottom pin shaft ( Figure 2 The hook assembly 20 is disengaged from the bottom pin 42 (as shown in FIG. Figure 3As shown), the lock body is unlocked; at this time, the operating handle assembly is continued to be pressed, and the operating handle assembly drives the hook assembly 20 to continue to move through the top pin 43, and the hook assembly 20 drives the lock column assembly 30 to rotate through the column plate pin 34. The lock column assembly 30 continues to move upward under the limiting action of the bracket welding assembly. When the column plate pin 34 passes the highest point and continues to move, the limiting pin on the operating handle assembly moves to the limiting groove of the limiting arm, and the lock body is locked. The cab anti-mislocking locking mechanism of the present invention does not affect the normal locking, but can effectively prevent the lock body from being locked by mistake, greatly improving the safety of vehicle driving.

Claims

1. A cab anti-mislocking locking mechanism, comprising a lock body assembly and a bracket welding assembly matched with the lock body assembly; characterized in that: The lock body assembly includes a mounting plate assembly, a hook assembly, a lock column assembly and a rocker arm assembly. The mounting plate assembly includes two symmetrically arranged side mounting plates, a middle column pin lined in the middle of the two side mounting plates and a bottom pin lined at the bottom of the two side mounting plates; the rocker arm assembly is rotatably connected to the mounting plate assembly through the middle column pin, and the lock column assembly is rotatably connected to the rocker arm assembly through the column plate pin; The hook assembly includes a hook sleeve rotatably sleeved on the bottom pin shaft, a hanging plate sleeved on the hook sleeve, and a hook spring sleeved on the hook sleeve, one end of the hook spring is hung on the hanging plate; the top groove of the hanging plate matches the bottom pin of the rocker arm assembly; The rocker arm assembly includes a rocker arm body, a rocker arm spring and a top pin shaft, the bottom column pin is lined between the two side arms of the rocker arm body, the side arms of the rocker arm body are rotatably sleeved on the middle column pin of the mounting plate assembly, one end of the rocker arm spring is fixed to the top edge of the transverse connecting plate of the column plate assembly, and the other end of the rocker arm spring is hung on the top fixing plate of the rocker arm body, one end of the top pin shaft is fixed to one side wall of the rocker arm body, and the other end of the top pin shaft passes through the other side wall of the rocker arm body; the other end of the hook spring is limited by a limit pin welded on the side mounting plate.

2. The cab anti-mislocking locking mechanism according to claim 1 is characterized in that: The two column plate ends of the locking column assembly are rotatably connected to the two side arms of the rocker arm body through the column plate pins.

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