Quick-insertion type lock catch mechanism for semitrailer guardrail

Abstract

The utility model relates to the technical field of semitrailers, in particular to a quick-insertion type lock catch mechanism for a semitrailer guardrail, which comprises a stand column and a clamping hook plate, a swing arm is hinged on the stand column, a pressing block is arranged at the top of the swing arm, and an insertion shaft capable of axially and elastically stretching is arranged in the pressing block. The inner end of the inserting shaft penetrates through the U-shaped notch in the clamping hook plate in a sliding mode and is horizontally embedded into the stand column, and a handle is fixedly arranged at the outer end of the inserting shaft. Through the axially and elastically telescopic inserting shaft, the device can be quickly inserted into or separated from the stand column; the inserting shaft is horizontally and coaxially embedded into the stand column, the swing arm can be positioned, the clamping hook plate is limited and locked between the stand column and the pressing block, and quick-inserting type limiting and locking of the protection plate are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a quick-insertion locking mechanism for a semi-trailer guardrail. Background Art

[0002] like Figure 1 The figure shows a semi-trailer with a guardrail and a crane. The side guardrail and rear guardrail on the semi-trailer are generally matched with a hook plate on the semi-trailer body through a bent handle. The hook plate is provided with a U-shaped notch, wherein the handle is rotated in the U-shaped notch and set on the column of the semi-trailer. The hook plate is set at the top ends of the outer side of the guardrail, and the handle supports the hook plate to lock the guardrail. However, when the semi-trailer is driving on a bumpy road, the handle is prone to excessive bearing force, deformation and jamming, resulting in difficulty in turning the handle.

[0003] Therefore, it is urgent to design a locking mechanism that can quickly limit the guard plate on the column. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects and shortcomings in the prior art. To this end, the utility model provides a quick-insert locking mechanism for a semi-trailer guardrail, which can quickly limit the guard plate while reducing the influence of external forces to avoid jamming.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a quick-insert locking mechanism for a semi-trailer guardrail, including a column and a hook plate, wherein a swing arm is hinged on the column, a pressure block is provided on the top of the swing arm, and an axially elastically retractable plug-in shaft is provided in the pressure block; the inner end of the plug-in shaft slides through a U-shaped notch on the hook plate and is horizontally embedded in the column, and a handle is fixed on the outer end; the hook plate is limited between the column and the pressure block.

[0006] Furthermore, a slider is coaxially provided on the plug-in shaft, and the slider is coaxially slidably placed in the pressure block; an end cover is provided at the outer end of the pressure block; a compression spring is provided between the end cover and the slider, and the compression spring is sleeved on the plug-in shaft; the pressure block and the end cover are both clearance-fitted with the plug-in shaft.

[0007] Furthermore, the quick-insert locking mechanism for the semi-trailer guardrail also includes a pad and a sleeve, the bottom of the pad is provided with an ear seat for hingedly connecting the swing arm; the column is a channel steel with an opening facing outward; the pad is integrally arranged at the bottom or side end of the column; the sleeve is integrally and horizontally fixedly nested on the pad and the column; the plug-in shaft is coaxially slidably embedded in the sleeve; the hook plate is limited between the pad and the pressure block.

[0008] Furthermore, the cross section of the hook plate is Z-shaped.

[0009] Furthermore, the sleeve slides through the U-shaped groove on the hook plate and abuts against the vertical plane of the pressure block; a gap A is provided between the hook plate and the inner end of the pressure block, and a gap B is provided between the hook plate and the pad; the sizes of the gap A and the gap B are both 3mm±0.5mm.

[0010] Furthermore, the handle is plum blossom-shaped.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the plug-in shaft can be quickly inserted into or detached from the column through the axially elastic telescopic plug-in shaft; the plug-in shaft is horizontally and coaxially embedded in the column, which can play a positioning role on the swing arm, so that the hook plate is limited and locked between the column and the pressure block; the overall quick-insert limit locking of the guard plate is realized, avoiding the problem of jamming on bumpy roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the locking method of the existing semi-trailer guardrail.

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0014] Figure 3 This is a usage position state diagram of the utility model.

[0015] Figure 4 for Figure 3 A is a partial enlarged view of the

[0016] Figure 5 for Figure 3 A partial enlarged view of B.

[0017] Among them: 1. column; 2. hook plate; 3. swing arm; 4. pressure block; 5. plug-in shaft; 6. handle; 11. pad; 12. ear seat; 41. end cover; 51. slider; 52. compression spring; 53. bushing. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. Example

[0020] See also Figures 2 to 5 The utility model provides a quick-insertion locking mechanism for a semi-trailer guardrail, comprising a column 1 and a hook plate 2, a swing arm 3 is hinged on the column 1, a pressure block 4 is provided on the top of the swing arm 3, and a plug-in shaft 5 that can be axially elastically retracted is provided in the pressure block 4; the inner end of the plug-in shaft 5 slides through the U-shaped notch on the hook plate 2 and is horizontally embedded in the column 1, and a handle 6 is fixed on the outer end; the hook plate 2 can be limited between the column 1 and the pressure block 4.

[0021] The handle 6 is preferably plum blossom shaped. Accordingly, the handle 6 is coaxially sleeved on the rotating shaft 5 and is tightened by a set screw, and the specific details are not repeated.

[0022] The inner end of the plug-in shaft 5 may be chamfered to facilitate the plug-in shaft 5 to be embedded in the column 1 .

[0023] As an embodiment of the utility model, a slider 51 is coaxially provided on the plug-in shaft 5, and the slider 51 is coaxially slidably placed in the pressure block 4; an end cover 41 is provided at the outer end of the pressure block 4; a compression spring 52 is provided between the end cover 41 and the slider 51, and the compression spring 52 is sleeved on the plug-in shaft 5; the pressure block 4 and the end cover 41 are both clearance-fitted with the plug-in shaft 5 to ensure the axial telescopic movement of the plug-in shaft 5, so as to facilitate the inner end of the plug-in shaft 5 to be inserted into the column 1.

[0024] As an embodiment of the utility model, the quick-insert locking mechanism for the semi-trailer guardrail also includes a pad 11 and a sleeve 53. The bottom of the pad 11 is provided with an ear seat 12 for articulating the swing arm 3; the column 1 is a channel steel with an opening facing outward; the pad 11 is integrally arranged at the bottom or side end of the column 1; the sleeve 53 is integrally and horizontally fixedly nested on the pad 11 and the column 1; the plug-in shaft 5 is coaxially slidably embedded in the sleeve 53; the hook plate 2 is limited between the pad 11 and the pressure block 4.

[0025] The hook plate 2 here preferably has a Z-shaped cross section.

[0026] When in use, the hook plate 2 is welded to the outer sides of the two ends of the top of the guard plate, and the exposed part of the hook plate 2 is in contact with or parallel to the plane of the corresponding pad 11 on the column 1. Then, the swing arm 3 is rotated and the handle 6 is operated to shrink the inner end of the plug-in shaft 5. When it corresponds to the position of the sleeve 53, the handle 6 is released, and the inner end of the plug-in shaft 5 is coaxially slid into the sleeve 53 to realize the positioning of the swing arm 3. At the same time, the hook plate 2 is limited between the pad 11 and the pressure block 4.

[0027] When the guard plate needs to be lowered, the handle 6 is operated to disengage the inner end of the plug-in shaft 5 from the shaft sleeve 53 , and then the swing arm 3 is lowered.

[0028] In addition, the sleeve 53 can also slide through the U-shaped notch on the hook plate 2 and abut against the vertical plane of the pressure block 4 to further ensure rapid alignment of the position; a gap A can be provided between the hook plate 2 and the inner end of the pressure block 4, and a gap B can be provided between the hook plate 2 and the pad 11, and the sizes of the gap A and the gap B are both 3mm±0.5mm. On bumpy roads, the slide plate can be adaptively adjusted, which is also convenient for quickly locking and opening the guard plate, and the details are not repeated here.

[0029] The utility model can be summarized in other specific forms that do not violate the spirit or main features of the utility model. Therefore, no matter from which point of view, the above embodiments of the utility model can only be regarded as an explanation of the utility model and cannot limit the utility model. The claims indicate the scope of the utility model, while the above description does not indicate the scope of the utility model. Therefore, any changes within the meaning and scope equivalent to the claims of the utility model should be considered to be included in the scope of the claims of the utility model.

Claims

1. A quick-insert locking mechanism for a semitrailer guardrail, comprising a column (1) and a hook plate (2), characterized in that: A swing arm (3) is hingedly connected to the column (1), a pressure block (4) is provided on the top of the swing arm (3), and an axially elastically retractable plug-in shaft (5) is provided inside the pressure block (4); the inner end of the plug-in shaft (5) slides through the U-shaped notch on the hook plate (2) and is horizontally embedded in the column (1), and a handle (6) is fixedly provided at the outer end; the hook plate (2) is limited between the column (1) and the pressure block (4).

2. The quick-insert locking mechanism for a semitrailer guardrail according to claim 1, characterized in that: A slider (51) is coaxially provided on the plug-in shaft (5), and the slider (51) is coaxially slidably placed in the pressure block (4); an end cover (41) is provided at the outer end of the pressure block (4); a compression spring (52) is provided between the end cover (41) and the slider (51), and the compression spring (52) is sleeved on the plug-in shaft (5); the pressure block (4) and the end cover (41) are both clearance-fitted with the plug-in shaft (5).

3. The quick-insert locking mechanism for a semitrailer guardrail according to claim 2, characterized in that: The quick-insertion locking mechanism for a semitrailer guardrail further comprises a backing plate (11) and a shaft sleeve (53); the bottom of the backing plate (11) is provided with an ear seat (12) for hingedly connecting the swing arm (3); the column (1) is a channel steel with an opening facing outward; the backing plate (11) is integrally arranged at the bottom or side end of the column (1); the shaft sleeve (53) is integrally and horizontally fixedly embedded in the backing plate (11) and the column (1); the plug-in shaft (5) is coaxially slidably embedded in the shaft sleeve (53); and the hook plate (2) is limited between the backing plate (11) and the pressure block (4).

4. The quick-insert locking mechanism for a semitrailer guardrail according to claim 3, characterized in that: The cross section of the hook plate (2) is Z-shaped.

5. The quick-insert locking mechanism for a semitrailer guardrail according to claim 3, characterized in that: The shaft sleeve (53) slides through the U-shaped notch on the hook plate (2) and abuts against the vertical plane of the pressure block (4); a gap A is provided between the hook plate (2) and the inner end of the pressure block (4), and a gap B is provided between the hook plate (2) and the pad (11); the sizes of the gap A and the gap B are both 3 mm±0.5 mm.

6. The quick-insert locking mechanism for a semitrailer guardrail according to claim 1, characterized in that: The handle (6) is in the shape of a plum blossom.

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