Pull-out type hinge of semitrailer carriage

Abstract

A plurality of draw-pull type hinges of a semitrailer carriage are arranged up and down at intervals and connected between a front stand column and a side carriage door, and each draw-pull type hinge comprises a hinge body, a draw-pull shaft and a guide limiting assembly. The hinge body is mainly composed of an upper hinge, a lower hinge and a hinge pin, the upper hinge is welded to the outer edge of the side, close to the front stand column, of the side compartment door, the adjacent edges of the upper hinge and the lower hinge are hinged through the hinge pin, and the lower hinge is correspondingly located on the outer side of the side, parallel to the side compartment door, of the front stand column. A guide hole is formed in the position, corresponding to the lower hinge, of the side, parallel to the side compartment door, of the front stand column, the drawing shaft is perpendicular to the side compartment door and penetrates out of the inner side of the front stand column through the guide hole, the outer end of the drawing shaft is fixedly connected with the lower hinge, and an anti-disengaging baffle is arranged at the inner end of the drawing shaft. And the guide limiting component is mounted on the drawing shaft. The hinge at the joint of the front upright post and the side compartment door is changed into a pull-out structure, so that the side compartment door can be closed and is parallel to the sub-vehicle when the vehicle is carried on the back, the binding is convenient, and the driving safety of the vehicle is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, and specifically, to a draw-type hinge for a semi-trailer carriage. Background Art

[0002] As a mainstream vehicle type for road transportation, semi-trailers have a promising market prospect. Especially for coal transportation, it is still a major source of goods for semi-trailer transportation. With the "reforms of the toll collection mode and transportation mode", the mother-and-son semi-trailer has become a best-selling vehicle type for current coal transportation. Firstly, with the change of the highway toll collection mode, after charging by axle, the cost of empty return of vehicles has increased. Secondly, with a large number of coal transfers from road to rail in the coal industry, the overall source of goods for coal transportation has decreased, and the freight rate has also dropped accordingly. In order to compete, many fleets have started to adopt the mother-and-son vehicle mode to reduce transportation costs and improve efficiency. Since there are various types of sub-vehicle main engines (front ends), when the mother vehicle meets the requirements of the "Announcement of Road Motor Vehicle Manufacturers and Products" in terms of appearance, the sub-vehicle main engine may be too wide (exceeding the inner control width of the mother vehicle), and the mother vehicle door cannot be closed during the process of carrying the sub-vehicle (the outer door leaf, which is not convenient for bundling and poses safety problems during vehicle transportation).

[0003] In order to solve the above existing problems, people have been seeking an ideal technical solution. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, and thus provide a draw-type hinge for a semi-trailer carriage. The utility model can solve the problems that when the mother vehicle carries the sub-vehicle during the empty return of the mother-and-son semi-trailer, the sub-vehicle main engine is too wide and the mother vehicle cannot close the door, as well as the safety problems during vehicle driving.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows: A draw-type hinge for a semi-trailer carriage, with several spaced up and down and connected between the front column and the side carriage door, including a hinge body, a draw shaft and a guiding and limiting component;

[0006] The hinge body is mainly composed of an upper hinge, a lower hinge and a hinge pin. The upper hinge is welded to the outer edge of the side carriage door close to the front column. The adjacent sides of the upper hinge and the lower hinge are hinged through the hinge pin. The lower hinge is correspondingly located on the outer side of the side parallel to the front column of the front column;

[0007] At the position corresponding to the lower hinge on the side of the front column parallel to the side carriage door, a guiding hole is provided. The draw shaft is arranged perpendicular to the side carriage door. The draw shaft passes through the guiding hole from the inside of the front column. The outer end of the draw shaft is fixedly connected to the lower hinge, and an anti-disengagement baffle is provided at the inner end of the draw shaft;

[0008] The guiding and limiting component is installed on the draw shaft and is used to limit the movement of the draw shaft on the front column.

[0009] Based on the above, the guiding and limiting component includes a fixed sleeve and a stop pin;

[0010] The fixed sleeve is arranged inside the front column and coaxially and slidably sleeved on the draw shaft for guiding the draw shaft. The outer end of the fixed sleeve is welded to the inner side wall of the front column and corresponds to the guiding hole. The length of the fixed sleeve is less than or equal to 1 / 2 of the length of the draw shaft, and the outer diameter of the anti-detachment baffle is greater than the inner diameter of the fixed sleeve.

[0011] A pin positioning hole is vertically formed in the middle of the circumference of the draw shaft, and the retaining pin is correspondingly inserted into the pin positioning hole for restricting the axial movement of the draw shaft.

[0012] When the draw shaft is in the non-drawn state, the pin positioning hole is located on one side of the inner end of the fixed sleeve, and the retaining pin blocks on one side of the inner end of the fixed sleeve. When the draw shaft is in the drawn state, the pin positioning hole is located outside the front column, and the retaining pin blocks outside the front column. The inner end of the fixed sleeve is in pressing contact with the anti-detachment baffle.

[0013] Based on the above, a receiving ring is fixedly arranged on the anti-detachment baffle, and one end of the retaining pin is fixedly connected to the receiving ring through a soft rope or a chain.

[0014] Based on the above, the pin positioning hole is vertically arranged along the radial direction of the draw shaft.

[0015] The utility model has substantial features and progress compared with the prior art. Specifically, on the premise of not changing the appearance of the carriage and meeting the "Announcement of Road Motor Vehicle Manufacturers and Products", the hinge of the side carriage door connected to the front column is designed as a draw-type hinge. When the draw shaft is in the non-drawn state, the side carriage door and the front column are hinged in the ordinary form of a hinge, and normal cargo transportation can be carried out. When the draw shaft is in the drawn state, the side carriage door is pulled outwards relative to the front column, increasing the width between the side carriage doors on both sides of the front column, which is equivalent to increasing the width of the front compartment and enabling the side carriage doors on both sides of the main vehicle of the sub-vehicle to be closed when carrying the sub-vehicle. The closed side carriage doors are parallel to the sub-vehicle, facilitating bundling and ensuring the safety of vehicle driving. This structure solves the problem that the main vehicle of the sub-vehicle is too wide to close the side carriage doors when the mother and son trailers return with the sub-vehicle on the back. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic connection diagram between the front column and the side carriage door of the utility model.

[0017] Figure 2 is Figure 1 the partial enlarged view of I in

[0018] Figure 3 is a schematic structural diagram of the draw shaft of the utility model in the non-drawn state.

[0019] Figure 4 is a schematic structural diagram of the draw shaft of the utility model in the drawn state.

[0020] In the figure: 1. Front column; 2. Side compartment door; 3. Pull-out shaft; 4. Upper hinge; 5. Lower hinge; 6. Hinge pin; 7. Anti-disengagement baffle; 8. Fixed sleeve; 9. Stop pin; 10. Pin positioning hole; 11. Storage ring; 12. Chain. Specific embodiments

[0021] The technical solution of the present utility model will be further described in detail below through specific embodiments.

[0022] As Figures 1-4 shown, a pull-out hinge for a semi-trailer compartment is provided with several spaced up and down and connected between the front column 1 and the side compartment door 2, and includes a hinge body, a pull-out shaft 3 and a guiding and limiting component;

[0023] The hinge body is mainly composed of an upper hinge 4, a lower hinge 5 and a hinge pin 6. The upper hinge 4 is welded to the outer edge of the side compartment door 2 close to the front column 1. The adjacent sides of the upper hinge 4 and the lower hinge 5 are hinged by the hinge pin 6. The lower hinge 5 is correspondingly located on the outer side of the side parallel to the front column 1 of the front column 1 and the side compartment door 2.

[0024] A guiding hole is provided at the position corresponding to the lower hinge 5 on the side parallel to the side compartment door 2 of the front column 1. The pull-out shaft 3 is arranged perpendicular to the side compartment door 2. The pull-out shaft 3 passes through the guiding hole from the inside of the front column 1. The outer end of the pull-out shaft 3 is fixedly connected to the lower hinge 5, and an anti-disengagement baffle 7 is provided at the inner end of the pull-out shaft 3;

[0025] The guiding and limiting component is installed on the pull-out shaft 3 and is used to limit the movement of the pull-out shaft 3 on the front column 1.

[0026] In this embodiment, the guiding and limiting component includes a fixed sleeve 8 and a stop pin 9;

[0027] The fixed sleeve 8 is arranged inside the front column 1 and coaxially and slidably sleeved on the pull-out shaft 3 for guiding the pull-out shaft 3. The outer end of the fixed sleeve 8 is welded to the inner side wall of the front column 1 and corresponds to the guiding hole. The length of the fixed sleeve 8 is less than or equal to 1 / 2 of the length of the pull-out shaft 3. The outer diameter of the anti-disengagement baffle 7 is larger than the inner diameter of the fixed sleeve 8;

[0028] A pin positioning hole 10 is provided in the middle of the circumference of the pull-out shaft 3 in the vertical direction. The stop pin 9 is correspondingly inserted into the pin positioning hole 10 to limit the axial movement of the pull-out shaft 3;

[0029] When the pull-out shaft 3 is in the non-pulled-out state, the pin positioning hole 10 is located on one side of the inner end of the fixed sleeve 8, and the stop pin 9 blocks on one side of the inner end of the fixed sleeve 8. When the pull-out shaft 3 is in the pulled-out state, the pin positioning hole 10 is located outside the front column 1, and the stop pin 9 blocks outside the front column 1. The inner end of the fixed sleeve 8 is in pressing contact with the anti-disengagement baffle 7.

[0030] The assembly process of this embodiment is as follows: When welding the front column 1 before welding, weld the fixed sleeve 8 on the inner side wall of the front column 1 and drill the described guiding holes corresponding to the position of the fixed sleeve 8. Then, pass the draw shaft 3 through the inside of the front column 1 into the fixed sleeve 8 and then out of the front column 1 and weld it together with the lower hinge 5 (drill holes in advance on the lower hinge 5, and the outer end of the draw shaft 3 is welded correspondingly in the drilled holes on the lower hinge 5). The draw shaft 3 is in the state of not being pulled out. Insert the retaining pin 9 into the pin positioning hole 10. When assembling the vehicle body, after welding the upper hinge 4 on the side compartment door 2, insert the upper hinge 4 pin, and connect the upper hinge 4 and the lower hinge 5 together to complete the vehicle body assembly.

[0031] In this embodiment, a receiving ring 11 is fixedly arranged on the anti-drop baffle 7, and one end of the retaining pin 9 is fixedly connected to the receiving ring 11 through a soft rope or a chain 12. In this way, the retaining pin 9 can be well received, avoiding the loss or difficult access of the retaining pin 9, and ensuring that the retaining pin 9 can move flexibly, so that the retaining pin 9 can be disassembled and assembled conveniently. Especially when the draw shaft 3 is pulled out, the retaining pin 9 can be wound from the inner side of the front column 1 to the outer side of the front column 1 so as to be inserted into the pin positioning hole 10.

[0032] In this embodiment, the pin positioning hole 10 is vertically arranged along the radial direction of the draw shaft 3.

[0033] When the vehicle is transporting goods normally, the draw shaft 3 is in the state of not being pulled out, the lower hinge 5 is in close contact with the front column 1, the retaining pin 9 is inserted into the pin positioning hole 10 and blocks on one side of the inner end of the fixed sleeve 8, restricting the axial movement of the draw shaft 3. The side compartment door 2 is hinged to the front column 1 in a common hinge form, and the side compartment door 2 can be normally closed and has a small gap with the front column 1;

[0034] When the vehicle is used as a mother vehicle to carry another vehicle on its back, in order to adapt to the width of the host vehicle of the sub-vehicle, pull out the retaining pin 9 from the pin positioning hole 10, and then pull out the draw shaft 3. Then, the side compartment door 2 is pulled outwards relative to the front column 1. At this time, the pin positioning hole 10 is on the outer side of the front column 1. Then, insert the retaining pin 9 into the pin positioning hole 10 and block it on the outer side of the front column 1. The inner end of the fixed sleeve 8 is in pressing contact with the anti-drop baffle 7, restricting the axial movement of the draw shaft 3, so that the width between the side compartment doors 2 on both sides of the front column 1 is increased, which is equivalent to increasing the width of the front compartment, and can meet the requirement that the side compartment doors 2 on both sides of the host vehicle of the sub-vehicle can be closed when carrying the sub-vehicle on its back. After being closed, the side compartment doors 2 are parallel to the sub-vehicle, which is convenient for bundling and ensures the safety of the vehicle during driving.

[0035] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements on some technical features; Without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A semi-trailer compartment pull-out hinge, with a plurality of hinges arranged at intervals above and below and connected between the front pillar and the side compartment door, characterized in that: It includes a hinge body, a pull-out shaft and a guide limiter assembly; The hinge body is mainly composed of an upper hinge, a lower hinge and a hinge pin. The upper hinge is welded to the outer edge of the side door near the front pillar. The adjacent edges of the upper hinge and the lower hinge are hinged by the hinge pin. The lower hinge is located on the outer side of the side parallel to the front pillar and the side door. A guide hole is provided at the position of the lower hinge on the side of the front column parallel to the side door, and the pull-out shaft is arranged perpendicular to the side door. The pull-out shaft passes through the guide hole from the inner side of the front column, and the outer end of the pull-out shaft is fixedly connected to the lower hinge, and an anti-slip baffle is provided at the inner end of the pull-out shaft; The guide limit assembly is installed on the drawer shaft and is used to limit the movement of the drawer shaft on the front column.

2. The semitrailer compartment pull-out hinge according to claim 1, characterized in that: The guide limit assembly includes a fixed sleeve and a stop pin; The fixing sleeve is arranged in the front column and coaxially slidably sleeved on the pulling shaft, and is used to guide the pulling shaft. The outer end of the fixing sleeve is welded to the inner wall of the front column and corresponds to the guide hole. The length of the fixing sleeve is less than or equal to 1 / 2 of the length of the pulling shaft. The outer diameter of the anti-slip baffle is larger than the inner diameter of the fixing sleeve. A latch pin positioning hole is provided in the middle of the circumference of the pull-out shaft in the vertical direction, and the stop pin is correspondingly inserted into the latch pin positioning hole to limit the axial movement of the pull-out shaft; When the pulling shaft is in an unpulled state, the latch pin positioning hole is located on the inner end side of the fixing sleeve, and the stop pin is blocked on the inner end side of the fixing sleeve; when the pulling shaft is in an extended state, the latch pin positioning hole is located on the outer side of the front column, and the stop pin is blocked on the outer side of the front column, and the inner end of the fixing sleeve is pressed and contacted with the anti-slip baffle.

3. The semitrailer compartment pull-out hinge according to claim 2, characterized in that: A storage ring is fixedly arranged on the anti-dropping baffle plate, and one end of the baffle pin is fixedly connected to the storage ring through a soft rope or a chain.

4. The semitrailer compartment pull-out hinge according to claim 2, characterized in that: The latch pin positioning hole is vertically arranged along the radial direction of the pulling shaft.

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