A locking mechanism for a semi-trailer guard plate

Abstract

The utility model relates to the technical field of semi-trailers, and in particular to a locking mechanism for a semi-trailer guard plate, comprising a hook plate and a column, wherein a connecting rod is hinged on the column, a pressure block is arranged at the outer end of the connecting rod, a rotating shaft is arranged in a spherical rotation connection inside the pressure block; the inner end of the rotating shaft slides through the hook plate and is threadedly connected to a nut sleeve, and a handle is fixed at the other end; the nut sleeve is horizontally fixed on the top of the column; thereby, the hook plate is locked between the pressure block and the nut sleeve, the whole is easy to operate, and the problem of deformation and jamming of the locking mechanism on a bumpy road section can be prevented, so that the opening and locking of the guard plate are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a locking mechanism for a semi-trailer guard plate. 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 is against the hook plate to lock the guardrail. However, when the semi-trailer is driving on a bumpy road, the handle is easily subjected to excessive load and deformed, resulting in difficulty in turning the handle.

[0003] Therefore, it is urgent to design a locking mechanism that is easy to open and lock. 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 locking mechanism for a semi-trailer guard plate, which can prevent the problem of deformation and jamming on bumpy roads and facilitate the opening and locking of the guard plate.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a locking mechanism for a semi-trailer guard plate, including a hook plate and a column, the column is hinged with a connecting rod, the outer end of the connecting rod is provided with a pressure block, the inner spherical rotation connection of the pressure block is provided with a rotating shaft; the inner end of the rotating shaft slides through the hook plate and is threadedly connected to the nut sleeve, and the other end is fixed with a handle; the nut sleeve is horizontally fixed on the top of the column; the hook plate is configured to be locked between the pressure block and the nut sleeve.

[0006] Furthermore, a spherical portion is coaxially provided on the rotating shaft, and matching spherical pads are provided at both ends of the spherical portion along the axial direction, and the spherical pads are coaxially slidably placed in the pressure block; an end cover for supporting the corresponding spherical pad is provided at the outer end of the pressure block; and a gap is provided between the pressure block, the spherical pad and the end cover and the rotating shaft.

[0007] Furthermore, a pad is fixed on the column, and a connecting seat is provided at the bottom of the pad; the connecting seat is hinged to the connecting rod; and the nut sleeve slides through the pad.

[0008] Furthermore, the column is a channel steel with an opening facing outward; the pad and the nut sleeve are both fixed to the bottom or side end of the column; and the cross-section of the hook plate is Z-shaped.

[0009] Furthermore, the nut sleeve is provided with a flange bolted to the column.

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

[0011] Furthermore, the handle is coaxially sleeved on the rotating shaft and is tightened by a set screw.

[0012] Furthermore, the ends of the gasket and the nut sleeve are flush.

[0013] Compared with the prior art, the beneficial effects of the utility model are: by adopting a spherical rotation connection between the pressure block and the rotating shaft, the rotating shaft can rotate relative to the connecting rod, ensuring that the rotating shaft is horizontally threaded with the nut sleeve and the hook plate is locked between the pressure block and the nut sleeve. The overall structure is simple, easy to operate, and can be used normally on bumpy roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the locking method of the existing semi-trailer guard plate.

[0015] Figure 2 It is a structural schematic diagram of the utility model.

[0016] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0017] Figure 4 It is a schematic diagram of the motion state of the utility model.

[0018] Figure 5 It is a schematic diagram of the position of the utility model between two side guard plates.

[0019] Among them: 1. hook plate; 2. column; 3. pad; 4. connecting rod; 5. rotating shaft; 6. handle; 7. nut sleeve; 31. connecting seat; 41. pressure block; 42. spherical pad; 43. end cover; 51. ball part. DETAILED DESCRIPTION

[0020] 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.

[0021] 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

[0022] See also Figures 2 to 5 The utility model provides a locking mechanism for a semi-trailer guard plate, comprising a hook plate 1 and a column 2, a connecting rod 4 is hinged on the column 2, a pressure block 41 is provided at the outer end of the connecting rod 4, a rotating shaft 5 is provided in a spherical rotation connection inside the pressure block 41; the inner end of the rotating shaft 5 slides through the hook plate 1 and is threadedly connected to a nut sleeve 7, and a handle 6 is fixed at the other end; the nut sleeve 7 is horizontally fixed on the top of the column 2.

[0023] When in use, the hook plate 1 is fixed to the outer sides of the two ends of the top of the semi-trailer guard plate. When the guard plate is rotated upward to the end face of the nut sleeve 7, the handle 6 is used to drive the connecting rod 4 to rotate upward. During the movement, the rotating shaft 5 is spherically rotated in the pressure block 41, and the rotating shaft 5 can be horizontally threaded with the nut sleeve 7. Specifically, a spherical portion 51 is coaxially provided on the rotating shaft 5, and matching spherical pads 42 are provided at both ends of the spherical portion 51 along the axial direction. The spherical pad 42 is coaxially slidably placed in the pressure block 41, and an end cover 43 for supporting the corresponding spherical pad 42 is provided at the outer end of the pressure block 41, and a gap is provided between the pressure block 41, the spherical pad 42 and the end cover 43 and the rotating shaft 5, such as Figure 4 As shown, the rotating shaft 5 can rotate spherically within the range of the gap. When the inner end of the rotating shaft 5 is close to the nut sleeve 7 and can be threadedly connected and is in a horizontal position, the inner end of the rotating shaft 5 passes through the U-shaped notch on the hook plate 1, and the connecting rod 4 is in an inclined state; the handle 6 is turned three to five times, the inner end of the rotating shaft 5 is screwed into the nut sleeve 7, the inner end of the pressure block 41 is in contact with the plane of the hook plate 1, and the connecting rod 4 is in a vertical state, so that the hook plate 1 is locked between the pressure block 41 and the nut sleeve 7.

[0024] When the semi-trailer guard plate needs to be lowered, only the rotating shaft 5 needs to be loosened, which makes the overall operation easy and prevents the overall deformation and jamming on bumpy roads, thus saving time and effort.

[0025] Here, a backing plate 3 may be fixedly provided on the column 2 , and a connecting seat 31 is provided at the bottom of the backing plate 3 ; the connecting seat 31 is hinged to the connecting rod 4 ; and the nut sleeve 7 slides through the backing plate 3 .

[0026] Preferably, the ends of the backing plate 3 and the nut sleeve 7 are flush, and the hook plate 1 is locked between the pressing block 41 and the backing plate 3, so as to further improve the overall anti-deformation ability.

[0027] As an embodiment of the present utility model, the above-mentioned column 2 is a channel steel with an opening facing outward; Figure 2 As shown, the backing plate 3 and the nut sleeve 7 for locking the side guard plate are fixedly arranged at the bottom of the column 2; the backing plate 3 and the nut sleeve 7 for locking the rear guard plate are fixedly arranged at the side end of the column 2; Figure 5 As shown, the respective backing plate 3 and the nut sleeve 7 between the two side guard plates are fixedly arranged at the bottom of the column 2. The cross section of the hook plate 1 here is Z-shaped, ensuring that the hook plate 1 is in plane contact with the pressing block 41 and the nut sleeve 7.

[0028] The nut sleeve 7 is preferably provided with a flange bolted to the column 2. The column 2 made of channel steel can also make the utility model play a certain hidden role on one side of the side guard plate, thereby improving the overall appearance, which will not be described in detail.

[0029] In summary, the handle 6 is preferably in the shape of a plum blossom. Accordingly, the handle 6 is coaxially sleeved on the rotating shaft 5 and is tightened by a set screw, and the details are not repeated here.

[0030] 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 locking mechanism for a semitrailer guard plate, comprising a hook plate (1) and a column (2), characterized in that: A connecting rod (4) is hinged on the column (2), a pressure block (41) is provided at the outer end of the connecting rod (4), and a rotating shaft (5) is provided in a spherical rotation connection inside the pressure block (41); the inner end of the rotating shaft (5) slides through the hook plate (1) and is threadedly connected to the nut sleeve (7), and a handle (6) is fixed at the other end; the nut sleeve (7) is horizontally fixed on the top of the column (2); the hook plate (1) is configured to be locked between the pressure block (41) and the nut sleeve (7).

2. The locking mechanism for a semitrailer guard plate according to claim 1, characterized in that: A spherical portion (51) is coaxially provided on the rotating shaft (5), and matching spherical pads (42) are provided at both ends of the spherical portion (51) along the axial direction. The spherical pads (42) are coaxially slidably placed in the pressing block (41); an end cover (43) for supporting the corresponding spherical pad (42) is provided at the outer end of the pressing block (41); and gaps are provided between the pressing block (41), the spherical pad (42) and the end cover (43) and the rotating shaft (5).

3. The locking mechanism for a semitrailer guard plate according to claim 2, characterized in that: A pad (3) is fixedly provided on the upright column (2), and a connecting seat (31) is provided at the bottom of the pad (3); the connecting seat (31) is hingedly connected to the connecting rod (4); and the nut sleeve (7) slides through the pad (3).

4. The locking mechanism for a semitrailer guard plate according to claim 3, characterized in that: The column (2) is a channel steel with an opening facing outward; the pad (3) and the nut sleeve (7) are both fixedly arranged at the bottom or side end of the column (2); and the cross section of the hook plate (1) is Z-shaped.

5. The locking mechanism for the semi-trailer guard plate according to claim 4, characterized in that: The nut sleeve (7) is provided with a flange which is bolted to the column (2).

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

7. The locking mechanism for a semitrailer guard plate according to claim 6, characterized in that: The handle (6) is coaxially sleeved on the rotating shaft (5) and is tightened by a set screw.

8. The locking mechanism for a semitrailer guard plate according to claim 3, characterized in that: The ends of the backing plate (3) and the nut sleeve (7) are flush.

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