AU2019101439B4

AU2019101439B4 - A Drop Deck Hook for Semi-trailer

Info

Publication number: AU2019101439B4
Application number: AU2019101439A
Authority: AU
Inventors: Feng Shi
Original assignee: Trailer Stonestar Pty Ltd
Current assignee: Trailer Stonestar Pty Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-04-09
Anticipated expiration: 2027-11-22
Also published as: AU2019101439A4

Abstract

Abstract The invention relates to a drop deck hook design, belonging to the field of semi-trailer. The drop deck hook including a bolt hook which is fixedly connected with the trailer. The bolt hook is provided with a hook wrench for controlling the opening and closing of the bolt hook. The trailer has a deck, the end of the deck is provided with a groove, and the hook wrench is matched with the groove; a groove is applied on the deck and the hook wrench can be operated from the top of the deck. Therefore, the center position of the hook is moved upward so that the distance from the ground to the center of the hook can meet the requirements of Australian standard. Furthermore, When the hook wrench is perpendicular to the deck, the bolt hook is opened, and when the hook wrench is parallel to the deck, the bolt hook will close. It can prevent the cargo from accidentally hitting the vertical hook wrench, avoiding a potential risk of bolt hook accidently unlocks, ensuring its safety.

Description

A Drop Deck Hook for Semi-trailer

Technical field

The invention belongs to the field of semi-trailer and relates to a drop deck hook design.

Background technique

Due to the market demand, some semi-trailers may require additional hooks on the rear of the trailer. However, the commonly used bolt hooks on the market have a longer operation handles (the upper deck will get the handle stuck and cannot be turned to the ground at 90 degrees). Therefore, the hook must be installed at a lower position from the vehicle body deck. However, the related Australian law clearly stipulates the distance from the trailer hook to the ground (the hook needs to be 800-950mm from the ground), so traditional solutions cannot meet the requirements of the Australian market. Similarly, another solution is to extend the deck at the hook or installation hook until the handle does not touch the upper deck and allow the protruding hook to move freely. However, the government also has standard requirements on the length of the bottom of the deck, so this solution cannot be used. Therefore, the cost-effective and commonly used hook cannot apply in Australia, and the manufacturer has to spend more money to buy more expensive hook, instead of using the commonly used bolt hook in the market.

Summary of the invention

In view of this, the purpose of the invention is to provide a hook design that can use a universal bolt hook on the premise of meeting Australian regulations and ensure the safety of its use.

In order to achieve the above object, the present invention provides the following technical solutions:

A hook design is added to the rear side of the trailer, including a bolt hook for a fixed connection with the trailer, on which is a hook wrench for controlling the opening and closing of the bolt hook. The trailer has a deck, the end of which is provided with a groove, and the hook wrench matches the groove.

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Description

2019101439 22 Nov 2019

Optionally, the projecting position of one end of the groove which away from the opening on the deck is longer than the projecting position of the rotating shaft center of the hook wrench on the deck, ensure that the hook wrench is placed vertically in the groove.

Optionally, the distance between the bolt hook and the ground is between 800 and 950mm, and it not exceeding the height from the deck to the ground.

Optionally, the minimum size of the groove is larger than the maximum size of the hook wrench, ensuring that the hook wrench can access freely to the groove.

Optionally, when the hook wrench is perpendicular to the deck, the bolt hook is opened, and when the hook wrench is parallel to the deck, the bolt hook is closed.

The beneficial effects of the invention are:

The invention discloses a hook design, a groove is applied on the deck and the hook wrench can be operated from the top of the deck. Therefore, the center position of the hook is moved upward so that the distance from the ground to the center of the hook can meet the requirements of Australian standard.

The invention discloses a hook design, when the hook wrench is perpendicular to the deck, the bolt hook is opened, and when the hook wrench is parallel to the deck, the bolt hook will close. It can prevent the cargo from accidentally hitting the vertical hook wrench, avoiding a potential risk of bolt hook accidently unlocks, ensuring its safety.

The other advantages, objectives and characteristics of the invention will be explained to some extent in the subsequent specification, and to some extent, based on the investigation and study below, it will be obvious to the technicians in the field, or can be taught from the practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following specifications.

Description of the drawings

In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for explanation:

Figure 1 is the main view of the hook design of the invention;

Description

2019101439 22 Nov 2019

Figure 2 is a vertical view of the hook design of the invention.

Attached drawing marks: deck 1, bolt hook 2, groove 3, hook wrench 4.

Specific implementation case

The implementation method of the invention is illustrated as follows with specific concrete examples. Technicians in the field can easily understand other advantages and effects of the invention from the contents disclosed in the manual. The invention can also be implemented or applied in different specific ways, and it can also be modified or changed without deviation from the main content of the invention based on different views and applications. It should be noted that the diagram provided in the following implementation only indicates the basic conception of the invention in a schematic way, and the following implementation and the features can be combined with each other without conflict.

The attached drawing is only used for illustration, and represents only a schematic diagram rather than a physical drawing, which cannot be understood as a restriction on the invention; In order to better illustrate the implementation of the invention, some parts in the attached drawing may be omitted, enlarged or reduced, which does not represent the size of the actual product; For technical personnel in the field, it is understandable that some of the public knowledge structures and their descriptions may be omitted in the attached drawings.

The same or similar labels in the attached drawing of the implementation of the invention correspond to the same or similar parts; In description of the invention, the need to understand is that if the term up, down, left and right, before and after indicates a location or position relations based on the location or position shown in the appended drawings, it only facilitate the description of this invention and simplified description, rather than instructions or implied refers to a device or component which must have a specific location, in a specific orientation structure and operation. Thus the appended drawings is described in the term is used only for example showed the position relations, but not for the limit of this invention, for the purpose of this general technical personnel in the field, the specific meaning of the above terms can be understood according to the specific situation.

Please refer to figure 1 ~ figure 2 for a hook design, which is installed at the rear side of the trailer, including the bolt hook 2 for the fixed connection with the trailer. The distance between the

Description

2019101439 22 Nov 2019 bolt hook 2 and the ground is between 800~950mm, and it not exceeding the height from deck 1 to the ground. The bolt hook 2 is provided with a hook wrench 4 for controlling the opening and closing of the bolt hook 2. The trailer is provided with deck 1 and groove 3 which is arranged on the end of the deck 1. The minimum size of groove 3 is larger than the maximum size of the hook wrench 4, so as to ensure free access of the hook wrench 4 in groove 3. The projected position of groove 3 away from the open end on deck 1 is longer than the projected position of the center of the rotation axis of hook wrench 4 on deck 1. Ensure that the hook wrench 4 is placed vertically in groove 3.

In this implementation, when the hook wrench 4 is designed to be perpendicular to deck 1, the bolt hook 2 is opened so that the tug can be loaded and unloaded; When parallel to deck 1, bolt hook 2 latches.

The invention is provided with groove 3 on deck 1, which can operate the hook wrench 4 from above deck 1, which is equivalent to moving the central position of the hook up, so that the distance between the ground and the hook center can meet the requirements of Australian standard. When the hook wrench 4 is perpendicular to deck 1, the bolt hook 2 will be opened. When the hook wrench 4 is parallel to deck 1, the bolt hook 2 will be closed to prevent the cargo from accidentally hitting the vertical hook wrench 4.

Finally, the above example to this invention only technical solution rather than the limit, although with reference to the better implementation of cases of this invention in detail, the common technology in the field of personnel should understand that the technical scheme for this invention can be modified or equivalent replacement, without of the purpose and scope of the technical scheme, above situation shall be included in the range of the invention claims.

Claims

1. A drop deck hook design which applied in the rear of trailers is characterized in that: a bolt hook which is fixedly connected with the trailer, the bolt hook is provided with a hook wrench for controlling its opening and closing. The trailer has a deck, and the end of the deck is provided with a groove, where the hook wrench above matches the groove.

2. According to the hook design described in claim 1, the characteristics are: The projecting position of one end of the groove which away from the opening on the deck is longer than the projecting position of the rotating shaft center of the hook wrench on the deck, ensure that the hook wrench is placed vertically in the groove.

3. According to the hook design described in claim 1, the characteristics are: The distance between the bolt hook and the ground is between 800 and 950mm, and it not exceeding the height from the deck to the ground.

4. According to the hook design described in claim 1, the characteristics are: The minimum size of the groove is larger than the maximum size of the hook wrench, ensuring that the hook wrench can access freely to the groove.

5. According to the hook design described in claim 1, the characteristics are: When the hook wrench is perpendicular to the deck, the bolt hook is opened, and when the hook wrench is parallel to the deck, the bolt hook is closed.