Connecting shaft

Abstract

The utility model provides a connecting shaft. The device comprises a plurality of shaft tubes and a pin shaft, the first sectional material and the second sectional material are arranged in a butt joint mode, a first groove part and a second groove part are arranged at the ends, at the butt joint position, of the first sectional material and the second sectional material respectively, the multiple shaft pipes are connected in an end-to-end mode, a protruding part is arranged on the circumferential side face of each shaft pipe, and the protruding parts on every two adjacent shaft pipes are arranged in the first direction and the second direction respectively. The protruding part arranged in the first direction is connected with the first groove part in an inserted mode, the protruding part arranged in the second direction is connected with the second groove part in an inserted mode, the pin shaft sequentially penetrates through the interiors of the shaft pipes, and the shaft pipes rotate along the pin shaft. The connecting shaft provided by the utility model overcomes the defects that the shafting of the conventional expandable folding square cabin is riveted or welded with a plate sheet, the same plate sheet is made of different materials, the appearance is ugly, the shafting is short, the mounting and positioning are difficult, the assembly is difficult and complicated, and the damage rate is high.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft systems, in particular to a connecting shaft. Background Art

[0002] The existing expandable and foldable cabin shaft systems are all riveted or welded to the plates, and the plates are made of different materials, which makes the appearance ugly, the shaft system short, the installation and positioning difficult, the assembly difficult and complicated, and the damage rate high. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a connecting shaft to solve the above problems existing in the prior art.

[0004] According to a first aspect of the utility model, a connecting shaft is provided, which is used in conjunction with a first profile and a second profile, and comprises: a plurality of shaft tubes and a pin shaft;

[0005] Profile No. 1 and profile No. 2 are butt-jointed, and the ends of profile No. 1 and profile No. 2 at the butt joint are respectively provided with groove No. 1 and groove No. 2, and the plurality of shaft tubes are connected end to end, and a protrusion is provided on the circumferential side surface of each shaft tube, and the protrusions on each two adjacent shaft tubes are respectively arranged in a first direction and a second direction, the protrusion arranged in the first direction is plugged into the groove No. 1, and the protrusion arranged in the second direction is plugged into the groove No. 2, and the pin shaft passes through the interior of the plurality of shaft tubes in sequence, and the shaft tubes rotate along the pin shaft.

[0006] Optionally, each protrusion has three protrusion pieces.

[0007] Optionally, the shape of the protruding piece located in the middle is T-shaped, the protruding pieces located on both sides are inverted L-shaped, and the protruding pieces located on both sides are arranged in a mirror image with respect to the axis of the protruding piece located in the middle.

[0008] Optionally, the three protrusions are all T-shaped.

[0009] Optionally, the three protrusions are all in an inverted L shape.

[0010] Optionally, the outer diameter of one end of the pin shaft is larger than the inner diameter of the shaft tube.

[0011] Optionally, the outer diameter of the shaft tube is 20-30 mm, and the inner diameter of the shaft tube is 16 mm-24 mm.

[0012] Optionally, the length of the multiple shaft tubes after being connected end to end is not greater than 7m.

[0013] Optionally, the shaft tube is made of aluminum alloy.

[0014] Optionally, the pin is made of stainless steel.

[0015] Through the utility model, a connecting shaft is used to cooperate with profile No. 1 and profile No. 2, and profile No. 1 and profile No. 2 are butt-jointed, and the ends of profile No. 1 and profile No. 2 at the butt joint are respectively provided with groove No. 1 and groove No. 2, and multiple shaft tubes are connected end to end, and each shaft tube is provided with a protrusion on the circumferential side surface, and the protrusions on each adjacent two shaft tubes are respectively arranged in a first direction and a second direction, and the protrusion arranged in the first direction is plugged into the groove No. 1, and the protrusion arranged in the second direction is plugged into the groove No. 2, and the pin shaft passes through the interior of multiple shaft tubes in sequence, and the shaft tubes are arranged to rotate along the pin shaft. In the present application, profile No. 1, profile No. 2, multiple shaft tubes and a pin shaft are used in cooperation, and the installation and positioning are simple, the assembly process is convenient and the damage rate is low, and the present application can ensure that the materials of profile No. 1 and profile No. 2 are the same, the appearance is consistent, and the appearance is beautiful. Therefore, the utility model solves the defects of the existing expandable and foldable square cabin shaft system, which is riveted or welded with the plate, and the plate materials are different, the appearance is ugly, the shaft system is short, the installation and positioning are difficult, the assembly is difficult and complicated, and the damage rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exploded view of the overall structure of a connecting shaft with a No. 1 profile and a No. 2 profile provided by the utility model;

[0017] Figure 2 It is a structural schematic diagram of the installation of a connecting shaft with a No. 1 profile and a No. 2 profile provided by the utility model;

[0018] Figure 3 This is a structural schematic diagram of a connecting shaft provided by the utility model, in which a connecting shaft is installed on a first profile and a second profile.

[0019] List of reference numerals:

[0020] 1. Axle tube; 1-1. Protruding portion; 1-1-1. Protruding piece; 2. Pin shaft; 3. Profile No. 1; 3-1. Groove No. 1; 4. Profile No. 2; 4-1. Groove No. 2. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Reference Figures 1 to 3 The utility model provides a connecting shaft, which is used in conjunction with a No. 1 profile 3 and a No. 2 profile 4, and includes: a plurality of shaft tubes 1 and a pin shaft 2;

[0025] The profile No. 1 3 and the profile No. 2 4 are butt-jointed, and the ends of the profile No. 1 3 and the profile No. 2 4 at the butt joint are respectively provided with a groove No. 1 3-1 and a groove No. 2 4-1, a plurality of shaft tubes 1 are connected end to end, and a protrusion 1-1 is provided on the circumferential side surface of each shaft tube 1, and the protrusions 1-1 on each two adjacent shaft tubes 1 are respectively arranged in a first direction and a second direction, the protrusion 1-1 arranged in the first direction is plugged into the groove No. 1 3-1, and the protrusion 1-1 arranged in the second direction is plugged into the groove No. 2 4-1, the pin shaft 2 passes through the interior of the plurality of shaft tubes 1 in sequence, and the shaft tube 1 rotates along the pin shaft 2.

[0026] The first profile 3 and the second profile 4 are arranged in mirror images of each other, and the first groove portion 3-1 and the second groove portion 4-1 are arranged along the first profile 3 and the second profile 4 respectively.

[0027] The utility model provides a connecting shaft, which is used in conjunction with a first profile 3 and a second profile 4. The profile No. 1 3 and the profile No. 2 4 are butt-jointed, and the ends of the profile No. 1 3 and the profile No. 2 4 at the butt joint are respectively provided with a groove No. 1 3-1 and a groove No. 2 4-1, a plurality of shaft tubes 1 are connected end to end, and a protrusion 1-1 is provided on the circumferential side surface of each shaft tube 1, and the protrusions 1-1 on each two adjacent shaft tubes 1 are respectively arranged in a first direction and a second direction, the protrusion 1-1 arranged in the first direction is plugged into the groove No. 1 3-1, and the protrusion 1-1 arranged in the second direction is plugged into the groove No. 2 4-1, the pin 2 passes through the interior of the plurality of shaft tubes 1 in sequence, and the shaft tube 1 is arranged to rotate along the pin 2, in the present application, the profile No. 1 3, the profile No. 2 4, the plurality of shaft tubes 1 and a pin 2 are used in combination, the installation and positioning are simple, the assembly process is convenient and the damage rate is low, and the present application can ensure that the materials of the profile No. 1 3 and the profile No. 2 4 are the same, the appearance is consistent, and the appearance is beautiful. Therefore, the utility model solves the defects of the existing expandable and foldable square cabin shaft system, which is riveted or welded with the plate, and the plate materials are different, the appearance is ugly, the shaft system is short, the installation and positioning are difficult, the assembly is difficult and complicated, and the damage rate is high.

[0028] Reference Figure 1 Optionally, each raised portion 1-1 has three raised pieces 1-1-1.

[0029] Among them, the raised portion 1-1 specified in the present application has three raised parts 1-1-1, which is the preferred number. Three raised parts 1-1-1 have met the load-bearing requirements. If the number of raised parts 1-1-1 is greater than three, the cost will increase. If the number of raised parts 1-1-1 is less than three, it will affect the bearing capacity.

[0030] Reference Figure 1 Optionally, the shape of the raised piece 1-1-1 located in the middle is T-shaped, the raised pieces 1-1-1 located on both sides are inverted L-shaped, and the raised pieces 1-1-1 located on both sides are mirror-set with the axis of the raised piece 1-1-1 located in the middle.

[0031] Among them, the matching use of T-type and inverted L-type can play the role of positioning, improving assembly speed, improving load-bearing capacity, and ensuring stability in use. This method is preferred in this application.

[0032] Optionally, the three protrusions 1-1-1 are all T-shaped.

[0033] Among them, the shapes of the three protrusions 1-1-1 are all T-shaped, which can achieve a better positioning effect.

[0034] Optionally, the three protrusions 1-1-1 are all in an inverted L-shape.

[0035] Among them, the three protrusions 1-1-1 are all in an inverted L-shape, which can also play a positioning effect, but the inverted L-shape is not as significant as the T-shape.

[0036] Optionally, the outer diameter of one end of the pin shaft 2 is larger than the inner diameter of the shaft tube 1 .

[0037] Among them, when profile No. 1 3 and profile No. 2 4 are placed vertically, the outer diameter of the top end of the pin 2 is larger than the inner diameter of the shaft tube 1, so that the top end of the pin 2 can be firmly clamped on the shaft tube 1, and the pin 2 will not be dislocated; when profile No. 1 3 and profile No. 2 4 are placed horizontally, the position of the pin 2 in the shaft tube 1 will not be displaced.

[0038] Optionally, the outer diameter of the shaft tube 1 is 20-30 mm, and the inner diameter of the shaft tube 1 is 16 mm-24 mm.

[0039] Among them, the outer diameter of the shaft tube 1 is preferably 24 mm, and the inner diameter of the shaft tube 1 is preferably 20 mm. This limitation caters to the existing market spare parts and is convenient for procurement and maintenance.

[0040] Optionally, the length of the multiple shaft tubes 1 after being connected end to end is not greater than 7m.

[0041] The limitation on the length of the multiple shaft tubes 1 after being connected end to end is because they cannot be processed when the length is greater than 7m.

[0042] Optionally, the shaft tube 1 is made of aluminum alloy.

[0043] Among them, aluminum alloy has the advantages of low density, good processing performance, easy recycling and excellent corrosion resistance.

[0044] Optionally, the pin 2 is made of stainless steel.

[0045] Among them, stainless steel has the advantage of high corrosion resistance.

[0046] Working principle: When in use, connect the profile No. 1 3 and the profile No. 2 4, insert the protrusion 1-1 set on the shaft tube 1 in the first direction into the corresponding groove No. 1 3-1, and insert the protrusion 1-1 set on the shaft tube 1 in the second direction into the corresponding groove No. 2 4-1, and then pass the pin 2 through the interior of multiple shaft tubes 1 in sequence to complete the installation. After the installation is completed, the profile No. 1 3 and / or the profile No. 2 4 can be manually rotated so that the profile No. 1 3 and / or the profile No. 2 4 drive the corresponding shaft tube 1 to rotate along the pin 2.

[0047] It should be noted that not all steps and modules in the above-mentioned processes and system structure diagrams are necessary, and some steps or modules can be ignored according to actual needs. The execution order of each step is not fixed and can be adjusted as needed. The system structure described in the above-mentioned embodiments can be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or some components in multiple independent devices may be implemented together.

[0048] In the above embodiments, the hardware module can be implemented mechanically or electrically. The above text shows and describes the present invention in detail through the accompanying drawings and preferred embodiments, but the present invention is not limited to these disclosed embodiments. Based on the above embodiments, those skilled in the art can know that the code review methods in the above different embodiments can be combined to obtain more embodiments of the present invention, and these embodiments are also within the protection scope of the present invention.

Claims

1. A connecting shaft, which is used in conjunction with a first profile (3) and a second profile (4), characterized in that: include: A plurality of shaft tubes (1) and a pin shaft (2); The first profile (3) and the second profile (4) are butt-jointed, and the ends of the first profile (3) and the second profile (4) at the butt joint are respectively provided with a first groove portion (3-1) and a second groove portion (4-1). The plurality of shaft tubes (1) are connected end to end, and a convex portion (1-1) is provided on the circumferential side surface of each shaft tube (1). The convex portions (1-1) on each two adjacent shaft tubes (1) are respectively arranged in a first direction and a second direction. The convex portion (1-1) arranged in the first direction is plugged into the first groove portion (3-1), and the convex portion (1-1) arranged in the second direction is plugged into the second groove portion (4-1). The pin shaft (2) sequentially passes through the interior of the plurality of shaft tubes (1), and the shaft tube (1) rotates along the pin shaft (2).

2. A connecting shaft according to claim 1, characterized in that: Each of the raised portions (1-1) has three raised pieces (1-1-1).

3. A connecting shaft according to claim 2, characterized in that: The shape of the protruding piece (1-1-1) located in the middle is T-shaped, the shape of the protruding pieces (1-1-1) located on both sides is inverted L-shaped, and the protruding pieces (1-1-1) located on both sides are arranged in a mirror image with respect to the axis of the protruding piece (1-1-1) located in the middle.

4. A connecting shaft according to claim 2, characterized in that: The three protruding parts (1-1-1) are all T-shaped.

5. A connecting shaft according to claim 2, characterized in that: The three protruding parts (1-1-1) are all in an inverted L-shape.

6. A connecting shaft according to claim 1, characterized in that: The outer diameter of one end of the pin shaft (2) is greater than the inner diameter of the shaft tube (1).

7. A connecting shaft according to claim 6, characterized in that: The outer diameter of the shaft tube (1) is 20-30 mm, and the inner diameter of the shaft tube (1) is 16 mm-24 mm.

8. A connecting shaft according to claim 7, characterized in that: The length of the plurality of shaft tubes (1) after being connected end to end is no more than 7 m.

9. A connecting shaft according to claim 8, characterized in that: The material of the shaft tube (1) is aluminum alloy.

10. A connecting shaft according to claim 9, characterized in that: The material of the pin shaft (2) is stainless steel.

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