Adjustable carriage locking mechanism

Abstract

The utility model discloses an adjustable carriage locking mechanism, which belongs to the technical field of transport vehicle locking, and comprises a lock head, a rotating shaft, a base, a handle and the like, and a waist-shaped groove is formed in the middle of a fixed foot piece at the bottom of a carriage; the base is fixed at the top of the mounting frame of the chassis; a horizontal arc groove communicated with the center hole is formed in the side surface of the base; the lock head is installed at the top of the rotating shaft, the rotating shaft is rotatably arranged in the center hole of the base, and the shape of the lock head is consistent with that of the kidney-shaped groove; the handle is arranged in the horizontal arc groove, the inner end of the handle is connected with the rotating shaft through threads, the handle can drive the rotating shaft and the lock to rotate so that the lock and the kidney-shaped groove can be staggered, and the compartment and the chassis can be fixedly connected. Compared with an existing plug pin or bolt type fixed locking mechanism, the structure is high in operation efficiency, and locking work can be completed by rotating a single handle; and by using the horizontal arc groove for limiting, the probability of false locking and missing locking can be obviously reduced, and gradual loosening can be avoided under long-term vibration and shaking.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the transportation vehicle locking technical field, especially relate to an adjustable car body locking mechanism. BACKGROUND

[0002] With the demand of the logistics transportation industry for vehicle modularization and efficient loading and unloading, the detachable car body becomes the mainstream design due to its flexibility and versatility. However, the widely used pin / bolt type fixing locking device in the prior art has significant technical bottlenecks, which are as follows:

[0003] 1) Efficiency and operation complexity. The current mainstream pin / bolt locking mechanism relies on manual one-by-one alignment installation, which is time-consuming, especially in the multi-lock point scenario.

[0004] 2) Long-term stability and safety defects. In a dynamic load and vibration environment, the traditional pin / bolt is prone to looseness or even falling off. Studies have shown that the pre-tightening force attenuation rate of bolt connection under alternating stress can reach more than 30%, which requires additional anti-loosening measures such as double nuts and locking steel wires, but such measures still cannot completely avoid the gradual failure caused by material fatigue or vibration.

[0005] 3) Insufficient adaptability and high maintenance cost. The existing locking device has poor adaptability to the car body and chassis structure. The traditional hook needs to be accurately matched and welded with the car body bottom hook plate, which results in low compatibility between different manufacturers' models, limiting the cross-platform versatility of the car body. In addition, the threads of the bolt / pin are prone to contamination or rust, and frequent cleaning and lubrication are required during maintenance, increasing the maintenance cost.

[0006] In summary, there is an urgent need for a new type of fixing locking mechanism that has high efficiency and wide compatibility to break through the technical bottlenecks of traditional pin / bolt type structure in terms of efficiency, safety and adaptability. SUMMARY

[0007] To solve the above technical problems, the utility model provides an adjustable car body locking mechanism, which solves the above problems by the following technical means:

[0008] The adjustable carriage locking mechanism is installed between a carriage and a chassis, and is characterized by comprising a lock head, a rotating shaft, a base and a handle, wherein: a fixed foot piece is connected to the bottom of the carriage, and a waist-shaped groove is formed in the middle of the fixed foot piece; an installation frame is fixedly connected to the top of the chassis; the base is fixed to the top of the installation frame, and the base is a cylindrical structure with a central hole, and a horizontal arc-shaped groove is formed in the side surface of the base and communicates with the central hole; the lock head is installed on the top of the rotating shaft, the rotating shaft is rotatably arranged in the central hole of the base, and the shape of the lock head is consistent with that of the waist-shaped groove; the handle is arranged in the horizontal arc-shaped groove, the inner end of the handle is threadedly connected with the rotating shaft, and the handle can drive the rotating shaft and the lock head to rotate; after the waist-shaped groove passes through the lock head and falls on the chassis, the lock head is rotated by swinging the handle to form the misalignment of the lock head and the waist-shaped groove, so that the fixed connection between the carriage and the chassis is realized.

[0009] Preferably, the lock head is a waist-shaped tapered head, the bottom of the waist-shaped tapered head is provided with a connecting hole for connecting the rotating shaft, the bottom surface of the waist-shaped tapered head is a waist-shaped bottom surface, the top of the waist-shaped tapered head is a guide arc surface, and the two sides of the waist-shaped tapered head are symmetrically provided with vertical surfaces.

[0010] Preferably, the angle range of the horizontal arc-shaped groove is 90°, and the horizontal arc-shaped groove is used for limiting the movement range of the handle, when the handle moves to one end of the horizontal arc-shaped groove, the angle of the lock head is consistent with that of the waist-shaped groove, and when the handle moves to the other end of the horizontal arc-shaped groove, the angle of the lock head is perpendicular to that of the waist-shaped groove.

[0011] Preferably, the adjustable carriage locking mechanism further comprises a servo motor, a driving bevel gear and a driven bevel gear, wherein: the servo motor is installed on the installation frame by a bearing plate, the driving bevel gear is installed on the rotating shaft of the servo motor, the driven bevel gear is installed on the bottom of the rotating shaft, and the angle of the lock head is controlled by the driving bevel gear and the driven bevel gear which are in meshing connection.

[0012] The adjustable carriage locking mechanism has the following beneficial effects:

[0013] The structure is based on the principle of rotary lock catch, has two modes of manual control and automatic control, has high operation efficiency, and can complete the locking work by rotating a single handle; the horizontal arc-shaped groove limiting can significantly reduce the probability of mistaken locking and missed locking, and will not gradually loosen under long-term vibration and shaking. In addition, the structure can be externally connected with a motor driven gear set to realize remote one-key locking, solves the technical problems of low efficiency, complex operation, poor stability, high maintenance cost and the like of the existing bolt lock mechanism, and is suitable for logistics vehicles, engineering vehicles and modular transportation platforms with adjustable carriages, and can improve the efficiency, safety and automation level of the connection between the carriage and the chassis. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0015] Fig. 1 is a schematic diagram of the installation position of the present application;

[0016] Fig. 2 is a schematic diagram of the structure of the present application;

[0017] Fig. 3 is a schematic diagram of the lock head structure of the present application.

[0018] In the figure, 1-carriage, 101-fixed foot piece, 102-waist-shaped groove, 2-chassis, 201-mounting frame, 3-lock head, waist-shaped taper head, connecting hole, 101-waist-shaped bottom surface, 102-guiding arc surface, 103- facade, 4-rotating shaft, 5-base, 501-horizontal arc groove, 6-handle, 7-servo motor, 8-driving bevel gear, 9-driven bevel gear. DETAILED DESCRIPTION

[0019] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0020] The present application will be described in detail below with reference to the drawings.

[0021] As Figs. 1 to 3As shown, the adjustable compartment locking mechanism is installed between the compartment 1 and the chassis 2, and specifically includes a lock head 3, a rotating shaft 4, a base 5 and a handle 6. In the figure: the bottom of the compartment 1 is connected with a fixed foot piece 101, the middle part of which is provided with a waist-shaped groove 102; the top of the chassis 2 is fixedly connected with a mounting rack 201; the base 5 is fixed on the top of the mounting rack 201, and is a cylindrical structure with a central hole, and the side surface of the base 5 is provided with a horizontal arc groove 501 communicating with the central hole; the lock head 3 is installed on the top of the rotating shaft 4, which is rotatably arranged in the central hole of the base 5, and the shape of the lock head 3 is consistent with that of the waist-shaped groove 102; the handle 6 is arranged in the horizontal arc groove 501, and the inner end of the handle 6 is threadedly connected with the rotating shaft 4, and the handle 6 can drive the rotating shaft 4 and the lock head 3 to rotate; after the waist-shaped groove 102 passes through the lock head 3 and falls on the chassis 2, the lock head 3 is rotated by swinging the handle 6 to form a misalignment between the lock head 3 and the waist-shaped groove 102, so as to realize the fixed connection between the compartment 1 and the chassis 2.

[0022] In the embodiment, the lock head 3 is a waist-shaped tapered head, the bottom of which is provided with a connecting hole for connecting the rotating shaft 4, the bottom surface of the waist-shaped tapered head is a waist-shaped bottom surface 301, the top of the waist-shaped tapered head is a guide arc surface 302, and the two sides of the waist-shaped tapered head are symmetrically provided with vertical surfaces 303, which can reliably guide the waist-shaped groove 102 to pass through the lock head 3.

[0023] It should be noted that the angle range of the horizontal arc groove 501 is 90°, and the horizontal arc groove 501 is used to limit the movement range of the handle 6, when the handle 6 moves to one end of the horizontal arc groove 501, the angle of the lock head 3 is consistent with that of the waist-shaped groove 102; when the handle 6 moves to the other end of the horizontal arc groove 501, the angle of the lock head 3 is perpendicular to that of the waist-shaped groove 102.

[0024] In actual application, it further includes a servo motor 7, a driving bevel gear 8 and a driven bevel gear 9, wherein: the servo motor 7 is installed on the mounting rack 201 by a bearing plate, the driving bevel gear 8 is installed on the rotating shaft of the servo motor 7, the driven bevel gear 9 is installed on the bottom of the rotating shaft 4, and the servo motor 7 controls the angle of the lock head 3 through the driving bevel gear 8 and the driven bevel gear 9 which are in mesh with each other. In addition, a sensor can be additionally installed to sense the position of the lock head to ensure that there is no locking phenomenon, so as to realize closed-loop control.

[0025] In specific work, the structure is based on the rotating lock catch principle, has two modes of manual and automatic control, and has high operation efficiency; single handle rotation can complete the locking work; and an external motor can drive the gear set. The use of horizontal arc groove limiting can significantly reduce the probability of false locking and missed locking, and will not gradually loosen under long-term vibration and shaking. The technical problems of low efficiency, complex operation, poor stability, high maintenance cost and the like of the existing bolt lock mechanism are solved, and the utility model is suitable for logistics vehicles, engineering vehicles and modular transportation platforms with adjustable carriages, and can improve the efficiency, safety and automation level of the connection between the carriage and the chassis.

[0026] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An adjustable bed locking mechanism installed between a bed (1) and a chassis (2), characterized in that, It comprises a lock head (3), a rotating shaft (4), a base (5) and a handle (6), wherein: The bottom of the carriage (1) is connected with a fixing foot piece (101), and a waist-shaped groove (102) is formed in the middle part of the fixing foot piece (101); The top of the chassis (2) is fixedly connected with a mounting rack (201); The base (5) is fixed on the top of the mounting rack (201), and is a cylindrical structure with a central hole, and a horizontal arc groove (501) is arranged on the side surface of the base (5) and communicates with the central hole; The lock head (3) is installed on the top of the rotating shaft (4), the rotating shaft (4) is rotatably arranged in the central hole of the base (5), and the shape of the lock head (3) is consistent with the shape of the waist-shaped groove (102); The handle (6) is arranged in the horizontal arc groove (501), the inner end of the handle (6) is threadedly connected with the rotating shaft (4), and the handle (6) can drive the rotating shaft (4) and the lock head (3) to rotate; The waist-shaped groove (102) passes through the lock head (3) and falls behind the chassis (2), and the lock head (3) is rotated by swinging the handle (6) to form the misalignment of the lock head (3) and the waist-shaped groove (102), so that the fixed connection between the carriage (1) and the chassis (2) is realized.

2. The adjustable bed lock mechanism of claim 1, wherein, The lock head (3) is a waist-shaped taper head, the bottom of the waist-shaped taper head is provided with a connecting hole for connecting the rotating shaft (4), the bottom surface of the waist-shaped taper head is a waist-shaped bottom surface (301), the top of the waist-shaped taper head is a guide arc surface (302), and the two sides of the waist-shaped taper head are symmetrically provided with vertical surfaces (303).

3. The adjustable bed lock mechanism of claim 1, wherein, The angle range of the horizontal arc groove (501) is 90°, and the horizontal arc groove (501) is used for limiting the movement range of the handle (6), when the handle (6) moves to one end of the horizontal arc groove (501), the angle of the lock head (3) is consistent with that of the waist-shaped groove (102); when the handle (6) moves to the other end of the horizontal arc groove (501), the angle of the lock head (3) is perpendicular to that of the waist-shaped groove (102).

4. The adjustable bed lock mechanism of claim 1, wherein, It also comprises a servo motor (7), a driving bevel gear (8) and a driven bevel gear (9), wherein: The servo motor (7) is installed on the mounting rack (201) by a bearing plate, the driving bevel gear (8) is installed on the rotating shaft of the servo motor (7), the driven bevel gear (9) is installed on the bottom of the rotating shaft (4), and the servo motor (7) controls the angle of the lock head (3) through the driving bevel gear (8) and the driven bevel gear (9) which are in mesh with each other.

Images