Lock bar structure for compartment door, compartment door of stake semitrailer and semitrailer

Abstract

The utility model provides a lock rod structure for a compartment door, the compartment door of a stake semitrailer and the semitrailer. The compartment door comprises a compartment plate, a fence and a lower connecting rod; the fence is fixed at the upper end of the carriage plate; the lower connecting rod is fixed at the lower end of the carriage plate; the fence comprises a plurality of fence vertical rods; the lock rod structure comprises a lock rod; the upper end of the lock rod is arranged on a limiting rod of the fence in a penetrating mode, the limiting rod serves as a fence vertical rod and extends in the vertical direction, so that acting force on the lock rod can be transmitted to the limiting rod, acting force at the upper end of the lock rod is dispersed, and the situation that local acting force of a compartment door is too large due to the lock rod, and the acting force of the lock rod on the compartment door is dispersed is effectively avoided; the probability of deformation of the compartment door is effectively reduced, and the compartment expansion prevention capacity of the compartment door is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially a lock rod structure for compartment door, warehouse grating type semitrailer's compartment door and semitrailer. BACKGROUND

[0002] With the development of modern domestic and international goods trade, bulk cargo transportation also develops and grows, wherein the land transportation plays an important role that can not be ignored, especially in bulk cargo transportation and container transportation, warehouse grating semitrailer is widely used.

[0003] In the related art, the compartment door of the semitrailer is arranged to be openable to facilitate loading and unloading of goods on the semitrailer. In order to facilitate locking of the compartment door on the semitrailer, a lock rod structure is arranged on the compartment door to lock the compartment door. Generally, a fixing sleeve is arranged on the compartment door to limit the lock rod, and the fixing sleeve is fixed on the compartment door. When the force of the lock rod is transmitted to the fixing sleeve, the force of the lock rod on the fixing sleeve is concentrated at the connection between the fixing sleeve and the compartment door. When the force on the lock rod is too large, the local deformation of the compartment door may occur, resulting in the compartment door rising. SUMMARY

[0004] The utility model discloses a lock rod structure for compartment door, which limits the lock rod on the fence, thereby dispersing the force of the lock rod on the compartment door, and improving the anti-rising ability of the compartment door.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] According to one aspect of the utility model, the utility model provides a lock rod structure for compartment door, the compartment door includes compartment board, fence and lower connecting rod, the fence is fixed on the upper end of the compartment board, and the lower connecting rod is fixed on the lower end of the compartment board, the fence includes a plurality of fence vertical rods, the lock rod structure includes a lock rod, at least one fence vertical rod is configured as a limiting rod, the upper end of the lock rod is configured to be worn on the lower end of one limiting rod, the lower end of the lock rod is configured to be arranged on the lower connecting rod, the lock rod can move up and down relative to the limiting rod and the lower connecting rod, so that the lock rod can be switched between the storage position and the clamping position, when the clamping position, the lower end of the lock rod is downward beyond the lower connecting rod, when the storage position, the lower end of the lock rod is located in the lower connecting rod.

[0007] In some embodiments of the present application, the upper end of the panel is provided with a panel transverse support fixed to the upper end of the panel; the lower end of the vertical rod is fixed to the panel transverse support; the limiting rod is configured to extend downward and downward beyond the lower end of the panel transverse support. The lower end of the limiting rod extends downward beyond the panel transverse support, so that the upper end of the lock rod is arranged on the panel transverse support. At the same time, the lower end of the vertical rod is fixed to the panel transverse support, and the limiting rod is fixed to the panel transverse support as a vertical rod, so that the force of the lock rod on the limiting rod is dispersed to the panel transverse support, the force of the lock rod on the limiting rod is dispersed, and the anti-expansion ability of the door is effectively improved.

[0008] In some embodiments of the present application, the limiting rod is configured to be provided with a hollow cavity, the upper end and the lower end of the cavity are open, and the upper end of the lock rod is arranged in the lower end of the cavity. The hollow structure of the limiting rod, and the upper end and the lower end are open, so that the limiting rod is a hollow structure extending upward and downward, which can effectively prevent water accumulation or debris accumulation in the limiting rod.

[0009] In some embodiments of the present application, the upper end of the lock rod exceeds the upper end of the panel transverse support, so that the lock rod has a longer overlapping area in the radial direction of itself and the limiting rod, which can further disperse the force on the limiting rod.

[0010] In some embodiments of the present application, the lock rod structure further comprises a fixing seat and a connecting rod; the fixing seat is configured to be fixed to the panel, and the connecting rod is fixed to the outer periphery of the lock rod; the connecting rod can be clamped on the fixing seat. The setting of the connecting rod facilitates the user to hold, so as to drive the lock rod to move upward and downward and rotate around the axis of the upward and downward direction. The clamping of the connecting rod on the fixing seat can lock the movement of the lock rod, so as to lock the door on the frame.

[0011] According to another aspect of the present application, the present application provides a door of a warehouse van, the door comprising a panel, a fence, an upper connecting rod, a lower connecting rod and a lock rod structure; the limiting rod is provided with a hollow cavity, the upper end and the lower end of the cavity are open, and the upper end of the lock rod is arranged in the lower end of the cavity; the upper end of the limiting rod is arranged in the upper connecting rod, and the upper end of the cavity penetrates the upper connecting rod.

[0012] In some embodiments of the present application, the lower connecting rod protrudes from the inner side of the panel; the lock rod is arranged on the inner side of the panel.

[0013] In some embodiments of the present application, the door comprises a plurality of limiting rods; the lock rod is provided with a plurality of corresponding limiting rods.

[0014] In some embodiments of the present application, the vertical rod is a structure made of a square tube or a circular tube.

[0015] According to another aspect of the present application, the present application provides a semitrailer, comprising a frame and a lock rod structure; the frame extends longitudinally; a lock head structure is arranged on the frame; a door is arranged above the frame; a lower end of the lock rod is detachably connected to the lock head structure.

[0016] From the above technical solution, the present application has at least the following advantages and positive effects:

[0017] In the present application, the upper end of the lock rod is arranged on a limiting rod of the fence, the limiting rod extends in the up-down direction as a column vertical rod, so that the force on the lock rod can be transmitted to the limiting rod, the force on the upper end of the lock rod is dispersed, the local force on the door caused by the lock rod is effectively avoided, the force of the lock rod on the door is dispersed, the probability of deformation of the door is effectively reduced, and the anti-expansion ability of the door is improved.

[0018] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0021] Figure 1 is a structural schematic diagram of the semitrailer of the present application.

[0022] Figure 2 is a structural schematic diagram of the door of the present application.

[0023] Figure 3 is a partial structural schematic diagram of the semitrailer of the present application.

[0024] The reference signs are explained as follows: 10, door; 20, frame; 30, stand; 100, frame; 110, upper connecting rod; 120, lower connecting rod; 130, left connecting rod; 140, right connecting rod; 200, door panel; 210, panel horizontal support; 300, fence; 310, column vertical rod; 311, limiting rod; 320, horizontal support; 400, lock rod; 410, fixed seat; 420, connecting rod. DETAILED DESCRIPTION

[0025] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.

[0026] Moreover, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the

[0027] The application will be further described with reference to the drawings and specific examples. It is to be understood that the technical features involved in the various embodiments of the application described below can be combined with each other as long as there is no conflict. The embodiments described below with reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as limiting the application.

[0028] For ease of description and understanding, the length direction of the semitrailer is taken as the longitudinal direction; the width direction of the semitrailer is taken as the transverse direction; the height direction of the semitrailer is taken as the up-down direction; and the direction toward the inside of the semitrailer is taken as the in.

[0029] Figure 1 is a structural schematic view of the semitrailer.

[0030] Referring to Figure 1 The application provides a semitrailer, which comprises a frame 20, a stand column 30, and a compartment door 10. The frame 20 serves as the main load-bearing member of the semitrailer and is used for carrying goods.

[0031] The frame 20 extends in the longitudinal direction, and the lower end of the stand column 30 is fixed on the frame 20, and the stand column 30 is connected perpendicularly to the frame 20. The stand columns 30 are arranged in the horizontal direction at intervals. The stand columns can be arranged at the corners of the frame. The stand columns can also be arranged between the adjacent two compartment doors on the left and right side faces of the frame.

[0032] In some embodiments, the upper end of the stand column 30 is further provided with an upper side beam, which extends in the longitudinal direction or the transverse direction. The two ends of the upper side beam in the length direction are fixedly connected to the upper ends of different stand columns 30 respectively.

[0033] The door 10 is arranged above the frame 20 and between the upright columns 30. The door 10 is arranged in a length direction of the semi-trailer and extends in a vertical direction. The semi-trailer is provided with doors 10 on both sides in a transverse direction of the semi-trailer, and the doors 10 close both sides of the semi-trailer in the transverse direction.

[0034] In one embodiment, one end of the door 10 in a longitudinal direction is hinged to the upright column 30, and the door 10 can rotate relative to the frame 20 and can be opened and closed. In some embodiments, the door 10 is hinged to the frame 20 or the upper side beam.

[0035] The frame 20 is provided with a lock head structure (not shown in the figure), and after the door 10 is closed, the corresponding structure on the door 10 is inserted into and clamped on the lock head structure to limit the rotation of the door 10. In this application, the lock rod of the lock rod structure is inserted into the lock head structure to lock the rotation of the door relative to the frame.

[0036] It should be noted that the lock head structure can be a through hole formed in the frame, which extends downward from the upper surface of the frame. The lock head structure can also be a sleeve fixed on the plug, which forms a cavity with an open upper end. The lock head structure can also be a fixed block, which is provided with a hole extending vertically through the block.

[0037] Figure 2 It is a structural schematic view of the door of the utility model. Figure 3 It is a partial structural schematic view of the semi-trailer of the utility model.

[0038] Referring again to Figures 1 to 3 In this application, the semi-trailer is a cage type semi-trailer. The door 10 of the semi-trailer is a cage type structure.

[0039] The door 10 includes a frame 100, a door panel 200, and a fence 300. The fence 300 is fixed to the upper end of the door panel 200. The door panel 200 and the fence 300 are located between the frame 100.

[0040] In one embodiment, the frame 100 includes an upper link 110 and a lower link 120. The upper link 110 and the lower link 120 are arranged vertically spaced apart. Both the upper link 110 and the lower link 120 extend in a longitudinal direction. The lower end of the door panel 200 is connected to the lower link 120, the lower end of the fence 300 is connected to the upper end of the door panel 200, and the upper end of the fence 300 is connected to the upper link 110.

[0041] In another embodiment, the frame 100 comprises an upper link 110, a lower link 120, a left link 130, and a right link 140. The upper link 110 and the lower link 120 are arranged in an up-down direction, and both of them extend in a longitudinal direction. The left link 130 and the right link 140 both extend in an up-down direction. The left link 130 and the right link 140 are arranged in a longitudinal direction, and the left link 130 and the right link 140 are arranged at two longitudinal ends of the upper link 110 respectively. The left link 130 is connected to the upper link 110 and the lower link 120 at two up-down ends respectively. The right link 140 is connected to the upper link 110 and the lower link 120 at two up-down ends respectively. The upper link 110, the lower link 120, the left link 130, and the right link 140 form a frame structure.

[0042] The panel 200 and the fence 300 are arranged within the frame structure. The lower end of the panel 200 is fixedly connected to the lower link 120, the lower end of the fence 300 is connected to the upper end of the panel 200, and the upper end of the fence 300 is connected to the upper link 110. The panel 200 is connected to the left link 130 and the right link 140 at two longitudinal ends respectively. The fence 300 is connected to the left link 130 and the right link 140 at two longitudinal ends respectively.

[0043] In some embodiments, the panel 200 is arranged in an up-down direction, and the lower end of the panel 200 is connected to the lower link 120. The fence 300 comprises a plurality of fence vertical rods 310, and the plurality of fence vertical rods 310 are arranged in a longitudinal direction of the upper link 110. The upper end of the fence vertical rod 310 is connected to the upper link 110, and the lower end of the fence vertical rod 310 is connected to the upper end of the panel 200.

[0044] In some embodiments, the fence 300 further comprises a fence horizontal support 320, and the fence horizontal support 320 extends in a longitudinal direction. The two longitudinal ends of the fence horizontal support 320 are connected to the left link 130 and the right link 140 respectively. Each of the fence vertical rods 310 intersects with the fence horizontal support 320. The fence horizontal support 320 and the plurality of fence vertical rods 310 form a fence structure.

[0045] In some embodiments, the upper end of the panel 200 is provided with a panel horizontal support 210, the panel horizontal support 210 is fixedly connected to the upper end of the panel 200, and the lower end of the fence vertical rod 310 is fixedly connected to the panel horizontal support 210. The two longitudinal ends of the panel horizontal support 210 are welded to the left link 130 and the right link 140 respectively.

[0046] It should be noted that, in the present application, the connection between the frame 100, the fence 300, and the panel 200 is welding or screw connection.

[0047] In some embodiments, the door 10 further comprises a lock rod structure arranged on the door for locking the door on the frame 20. The lock rod structure comprises a lock rod 400 arranged on one side of the door panel 200. In one embodiment, the lock rod is arranged on the inner side of the door panel. When the lock rod is arranged on the inner side of the door panel, the width of the semi-trailer in the lateral direction can be effectively reduced to facilitate the passage through narrow spaces. In another embodiment, the lock rod is arranged on the outer side of the door panel.

[0048] The upper end of the lock rod 400 is arranged through the lower end of a post 310, and the lower end of the lock rod 400 is arranged through the lower link 120. The lock rod 400 can move up and down relative to the post 310 and the lower link 120, so that the lower end of the lock rod 400 can pass through the lower link 120. The lock rod 400 can move up and down relative to the post 310 and the lower link 120, so that the lock rod 400 can be switched between the storage position and the engagement position.

[0049] When in the engagement position, the lower end of the lock rod 400 is below the lower link 120, and the lock rod 400 is arranged downwardly through the lock head structure on the frame 20 to lock the rotation of the door relative to the frame 20, and limit the door on the frame.

[0050] When the lock rod 400 moves upward to the storage position, the lower end of the lock rod 400 is located in the lower link 120, and the lock rod 400 moves upward to separate from the lock head structure of the frame, thereby releasing the lock of the door relative to the frame, and the door can be opened and closed relative to the frame.

[0051] A through hole (not shown in the figure) is formed in the lower link 120, the lower end of the lock rod 400 is arranged through the through hole, and the lock rod 400 can move up and down in the through hole and rotate around the axis in the up-down direction.

[0052] In some embodiments, at least one post 310 is configured as a limiting rod 311, the upper end of the lock rod 400 is arranged through the lower end of the limiting rod 311, and the lower end of the lock rod 400 is arranged through the lower link 120. The lock rod 400 can move up and down relative to the limiting rod 311 and the lower link 120, and the lock rod 400 can rotate around the axis in the up-down direction relative to the limiting rod 311 and the lower link 120.

[0053] The lower end of the lock rod 400 is arranged through the lower link 120. The lock rod 400 can move up and down relative to the limiting rod 311 and the lower link 120, so that the lower end of the lock rod 400 can pass through the lower link 120. When the lock rod moves downward to the engagement position, the lower end of the lock rod 400 is arranged through the lock head structure on the frame 20, thereby limiting the rotation of the door 10 relative to the frame.

[0054] The upper end of the lock rod 400 is arranged on a limiting rod 311 of the fence, the limiting rod 311 is a fence vertical rod 310 and extends in the up-down direction, so that the force on the lock rod 400 can be transmitted to the limiting rod 311, the force on the upper end of the lock rod 400 is dispersed, the local force on the door caused by the lock rod 400 is effectively avoided, the force on the door caused by the lock rod 400 is dispersed, and the probability of deformation of the door is effectively reduced, and the anti-expansion ability of the door is improved.

[0055] Compared with the related art, a fixed sleeve is used to limit the lock rod 400. In the present application, the fixed sleeve is not needed, the welding process of the limiting rod 311 is omitted, the production process is simplified, and the production effect is improved.

[0056] In the embodiment, the upper end of the door panel 200 is provided with a plate transverse support 210, the plate transverse support 210 is fixed on the upper end of the door panel 200, and the lower end of the fence vertical rod 310 is fixed on the plate transverse support 210. The plate transverse support 210 is welded on the upper end of the door panel 200, and the lower end of the fence vertical rod 310 is welded on the plate transverse support 210. The plate transverse support 210 is arranged to enhance the structural strength of the door 10. The lock rod 400 is arranged on the door panel, the limiting rod 311 extends downward and downward beyond the lower end of the plate transverse support 210, so that the lock rod 400 can be arranged upward in the limiting rod 311.

[0057] In some embodiments, the limiting rod 311 is provided with a hollow cavity, the upper end and the lower end of the cavity are open, and the water and sundries in the limiting rod are convenient to flow out.

[0058] The upper end of the lock rod 400 is arranged in the lower end of the cavity of the limiting rod 311. The limiting rod 311 is a rod structure, and the limiting rod 311 does not need to be processed too much to facilitate the manufacture of the limiting rod 311. The lower end of the limiting rod 311 is open, which facilitates the arrangement of the lock rod 400 in the limiting rod 311. For example, the limiting rod 311 is a cylindrical structure. In some embodiments, the limiting rod is a structure made of a square tube or a round tube.

[0059] In the embodiment, the upper end of the limiting rod 311 is arranged in the upper connecting rod 110, and the upper end of the cavity of the limiting rod penetrates the upper connecting rod 110, so that the upper and lower ends of the limiting rod 311 are open. The water flow and sundries in the limiting rod 311 can flow downward, and the limiting rod 311 will not accumulate water and sundry particles.

[0060] The plate transverse support 210 is provided with a through hole (not shown in the figure) penetrating from top to bottom; the limiting rod 311 is arranged in the through hole, and the outer periphery of the limiting rod 311 is welded to the through hole. The force on the limiting rod 311 can be dispersed to the plate transverse support 210, so as to improve the structural strength of the door 10. The force of the lock rod 400 on the limiting rod 311 can be transmitted to the plate transverse support 210, effectively avoiding the local force concentration on the door 10, reducing the probability of deformation of the door 10, and improving the anti-expansion ability of the door.

[0061] In some embodiments, the lower connecting rod 120 and the plate transverse support 210 respectively protrude from the inner side of the compartment plate 200, and the lock rod 400 is arranged on the inner side of the compartment plate 200. The lock rod 400 is arranged on the inner side of the compartment plate 200, which can ensure the width of the semitrailer in the transverse direction, reduce the width of the whole vehicle, and facilitate the smooth passing of the semitrailer in a narrow space.

[0062] In other embodiments, the lock rod 400, the lower connecting rod 120 and the plate transverse support 210 respectively protrude from the inner side of the compartment plate 200. The inner side of the lock rod 400 does not exceed the lower connecting rod 120 and the plate transverse support 210, so as to effectively avoid interference between the lock rod 400 and the articles in the semitrailer, and enhance the effective volume of the semitrailer.

[0063] Further, the compartment plate 200 is sequentially bent along the transverse sides in the longitudinal direction, and a continuous groove structure is formed. The lock rod 400 is arranged in the groove structure on the inner side of the compartment plate 200, further avoiding the influence of the lock rod 400 on the effective volume of the semitrailer.

[0064] It should be noted that in some embodiments, the lower connecting rod 120 and the plate transverse support 210 respectively protrude from the outer side of the compartment plate 200, and the lock rod 400 is arranged on the outer side of the compartment plate 200.

[0065] The door 10 comprises a plurality of limiting rods 311; the lock rod 400 is provided with a plurality of corresponding limiting rods 311. The corresponding arrangement of the plurality of limiting rods 311 and the plurality of lock rods 400 enhances the strength of the door 10 after being limited on the vehicle frame 20.

[0066] In some embodiments, the upper end of the lock rod 400 exceeds the upper end of the plate transverse support 210, so that the lock rod 400 has a predetermined length in the limiting rod 311. The lock rod has a predetermined overlapping area in the radial direction and the limiting rod 311, which disperses the force between the contact surfaces of the lock rod 400 and the limiting rod 311, so that the stress of the lock rod on the limiting rod is smaller, and the structural stability and reliability between the lock rod and the limiting rod are ensured.

[0067] The lock rod 400 further comprises a fixing base 410 and a connecting rod 420. The upper end of the lock rod 400 is arranged in the limiting rod 311, and the lower end of the lock rod 400 is arranged in the lower connecting rod 120. The lock rod 400 is movable up and down relative to the limiting rod 311 and the lower connecting rod 120, and the lock rod 400 is rotatable about an axis in the up and down direction relative to the limiting rod 311 and the lower connecting rod 120.

[0068] The connecting rod 420 is fixed on the outer periphery of the lock rod 400 and protrudes from the outer periphery of the lock rod 400. The connecting rod 420 is arranged to facilitate the user to hold. The user holds the connecting rod 420 to drive the lock rod 400 to move up and down and rotate by applying a force to the connecting rod 420. The fixing base 410 is fixed on the compartment plate 200 to lock the connecting rod 420, thereby locking the movement of the lock rod 400. The connecting rod 420 can be engaged on the fixing base 410, so that the connecting rod 420 is limited on the fixing base 410, thereby limiting the movement of the lock rod 400.

[0069] When the compartment door 10 is locked on the vehicle frame 20, the compartment door 10 is rotated relative to the vehicle frame 20 to a closed position. In the closed position, the lower end of the lock rod 400 is opposite the lock head structure on the vehicle frame 20. A force is applied to the connecting rod 420 to drive the lock rod 400 to move downward, so that the lower end of the lock rod 400 is arranged in the lock head structure on the vehicle frame 20, thereby limiting the rotation of the compartment door 10 relative to the vehicle frame 20. A force is applied to the connecting rod 420 to drive the lock rod 400 to rotate about the up and down axis. After the connecting rod 420 is rotated to be engaged on the fixing base 410, the fixing base 410 limits the movement of the connecting rod 420, thereby limiting the movement of the lock rod 400, to ensure that the compartment door 10 is locked on the vehicle frame 20.

[0070] When it is needed to open the compartment door 10, the fixing base 410 is unlocked relative to the connecting rod 420. The connecting rod 420 is rotated to separate the connecting rod 420 and the fixing base 410, and then a force is applied to the connecting rod 420 to drive the lock rod 400 to move upward. After the lock rod 400 is moved to a storage position, the lower end of the lock rod 400 is separated from the lock head structure of the vehicle frame 20, thereby unlocking the compartment door 10, so that the compartment door 10 can be opened and closed.

[0071] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or a specific number of technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0072] In this application, unless otherwise clearly indicated and limited, the terms "assembly", "connection", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. In the description of the specification, the description referring to the terms "some embodiments", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application, and any changes or modifications made in accordance with the claims and specification of the present application shall be within the scope of the present application.

Claims

1. A lock rod structure for a door, the door comprising a door panel, a fence and a lower link; the fence is fixed at an upper end of the door panel, and the lower link is fixed at a lower end of the door panel; the fence comprises a plurality of fence vertical rods; characterized in that, The lock rod structure comprises a lock rod; The at least one column vertical rod is configured as a limiting rod; The upper end of the lock rod is configured to be worn on the lower end of the limiting rod; the lower end of the lock rod is configured to be worn on the lower connecting rod; The lock rod can move up and down relative to the limiting rod and the lower connecting rod, so that the lock rod can be switched between the storage position and the clamping position; In the clamping position, the lower end of the lock rod is below the lower connecting rod; in the storage position, the lower end of the lock rod is in the lower connecting rod.

2. The lock rod structure according to claim 1, wherein The upper end of the panel is configured with a panel transverse support, and the panel transverse support is fixed on the upper end of the panel; The lower end of the column vertical rod is fixed on the panel transverse support; the limiting rod is configured to extend downward and downward beyond the lower end of the panel transverse support.

3. The lock bar structure of claim 2, wherein, The limiting rod is configured to be provided with a hollow cavity, and the upper end and the lower end of the cavity are open; the upper end of the lock rod is worn on the lower end of the cavity.

4. The lock bar structure of claim 2, wherein, The upper end of the lock rod exceeds the upper end of the panel transverse support.

5. The lock bar structure of claim 1, wherein The lock rod structure further comprises a fixing seat and a connecting rod; The fixing seat is configured to be fixed on the panel, and the connecting rod is fixed on the outer periphery of the lock rod; the connecting rod can be clamped on the fixing seat.

6. A door for a van-type semi-trailer, characterized in that The door comprises a panel, a fence, an upper connecting rod, a lower connecting rod, and the lock rod structure of any one of claims 1 to 5; The limiting rod is provided with a hollow cavity, and the upper end and the lower end of the cavity are open; the upper end of the lock rod is worn on the lower end of the cavity; the upper end of the limiting rod is worn in the upper connecting rod, and the upper end of the cavity penetrates the upper connecting rod.

7. The door according to claim 6, characterized in that The lower connecting rod protrudes from the inner side of the panel; the lock rod is arranged on the inner side of the panel.

8. The door according to claim 6, characterized in that The door comprises a plurality of limiting rods; the lock rod is provided with a plurality of corresponding limiting rods.

9. The door of claim 6, wherein The column vertical rod is a structure made of a square tube or a round tube.

10. A semi-trailer, characterized by The door comprises a plurality of limiting rods; the lock rod is provided with a plurality of corresponding limiting rods. The column vertical rod is a structure made of a square tube or a round tube. The door comprises a plurality of limiting rods; the lock rod is provided with a plurality of corresponding limiting rods. The column vertical rod is a structure made of a square tube or a round tube. The door comprises a plurality of limiting rods; the lock rod is provided with a plurality of corresponding limiting rods.

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