Limiting device for hinge pin of overturning seat of self-dumping semitrailer

Abstract

The utility model provides a self-dumping semitrailer overturning seat pin shaft limiting device which comprises an overturning seat upper support arranged on a frame and an overturning seat lower support arranged on a container, bolt holes used for being connected with bolts are formed in the overturning seat upper support and the overturning seat lower support, a limiting hole is formed in the overturning seat upper support, and the limiting hole is matched with the limiting hole. An arc-shaped clamping groove matched with the limiting hole is formed in the turnover seat lower support, and the turnover seat upper support and the turnover seat lower support are fixed and limited through a limiting shaft pin; the limiting holes and the arc-shaped clamping grooves are formed in the upper overturning seat support and the lower overturning seat support respectively, and when a container and a frame are maintained, the limiting shaft pins are directly inserted into the limiting holes and the arc-shaped clamping grooves, so that the upper overturning seat support and the lower overturning seat support are limited and fixed; the turnover seat upper support and the turnover seat lower support are prevented from rotating, the cargo box and the frame are fixed through the limiting shaft pins, the weight is light, and operation is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to semi-trailers, in particular to a pin shaft limiting device for a tipping seat of a dump semi-trailer. Background Art

[0002] In recent years, with the development of automobile technology, the domestic market demand for dump trailers has been increasing. After a long period of use, the cargo box and frame of a dump trailer will be damaged and need regular inspection and maintenance. When inspecting and repairing a dump trailer, the cargo box needs to be flipped over at a certain angle to facilitate the maintenance of the cargo box and frame. At present, the dump trailer can be flipped over by the following methods: Figure 1 The strut system shown is used for fixed support, and the strut system is mainly connected by welding, which is too heavy and requires the cooperation of multiple people to install. In addition, the strut system cannot be disassembled separately, and all parts need to be replaced after being damaged, which is inconvenient for maintenance. Utility Model Content

[0003] The utility model aims to provide a tipping seat pin shaft limiting device for a dump semi-trailer, which can achieve the purpose of tipping limiting and can also reduce its own weight, and is convenient for installation, maintenance and replacement.

[0004] To this end, the technical solution adopted by the utility model is: a tipping seat pin shaft limiting device for a dump semi-trailer, comprising a tipping seat upper support arranged on a cargo box and a tipping seat lower support arranged on a frame, the tipping seat upper support and the tipping seat lower support are provided with bolt holes for connecting bolts, the tipping seat upper support is provided with a limiting hole, the tipping seat lower support is provided with an arc-shaped groove matching the limiting hole, the tipping seat upper support and the tipping seat lower support are fixed and limited by a limiting axle pin, when the cargo box is rotated to a certain angle on the frame, the limiting hole is aligned with the position of the arc-shaped groove, and the limiting axle pin is inserted to prevent the tipping seat upper support and the tipping seat lower support from rotating.

[0005] As a preferred embodiment of the above scheme, the center of the limiting hole and the center of the bolt hole of the support on the flip seat are on the same vertical line, and the limiting hole is arranged above the bolt hole of the support on the flip seat.

[0006] Further preferably, the center of the arc-shaped groove is arranged on the upper edge line of the lower support of the flip seat, and the angle between the center of the arc-shaped groove and the vertical line where the center of the bolt hole is located is between 35 and 45 degrees.

[0007] Further preferably, the limit pin includes a pin body and a limit ring arranged at one end of the pin body, a positioning cylinder is sleeved on the pin body, and a pin hole is opened at one end of the pin body away from the limit ring, and a cotter pin is arranged in the pin hole.

[0008] Further preferably, the positioning cylinder is clamped on the lower support of the flip seat.

[0009] The beneficial effects of the utility model are as follows: by respectively arranging limit holes and arc-shaped slots on the upper support and the lower support of the flip seat, when maintaining the cargo box and the frame, the limit axle pins are directly inserted into the limit holes and the arc-shaped slots, thereby limiting and fixing the upper support and the lower support of the flip seat to prevent the upper support and the lower support of the flip seat from rotating, and fixing the cargo box and the frame by the limit axle pins, the weight is light, and the operation is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the brace system in the prior art.

[0011] Figure 2 It is a structural schematic diagram of the utility model.

[0012] Figure 3 It is an exploded view of the utility model. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] like Figure 2-3 As shown, a tipping seat pin shaft limiting device for a dump semi-trailer comprises a tipping seat upper support 1 arranged on a cargo box and a tipping seat lower support 2 arranged on a vehicle frame, bolt holes 3 for connecting bolts 5 are opened on the tipping seat upper support 1 and the tipping seat lower support, a limiting hole 101 is arranged on the tipping seat upper support 1, the center of the limiting hole 101 and the center of the bolt hole 3 of the tipping seat upper support 1 are on the same vertical line, and the limiting hole 101 is arranged above the bolt hole 3 of the tipping seat upper support 1.

[0015] An arc-shaped slot 201 matching the limiting hole 101 is provided on the lower support 2 of the flip seat, and the center of the arc-shaped slot 201 is set on the upper edge line of the lower support 2 of the flip seat, and the angle between the center of the arc-shaped slot 201 and the vertical line where the center of the bolt hole 3 is located is between 35 and 45 degrees.

[0016] The upper support 1 of the flip seat and the lower support 2 of the flip seat are fixed and limited by a limit axle pin 4. When the cargo box is rotated to a certain angle on the frame, the limit hole 101 is aligned with the position of the arc-shaped slot 201, and the limit axle pin 4 is inserted to prevent the upper support 1 of the flip seat and the lower support 2 of the flip seat from rotating.

[0017] The limiting shaft pin 4 includes a shaft pin body 401 and a limiting ring 402 arranged at one end of the shaft pin body 401. A positioning cylinder 403 is sleeved on the shaft pin body 401. A plug hole is opened at one end of the shaft pin body 401 away from the limiting ring 402, and a split pin 404 is arranged in the plug hole. The positioning cylinder 403 is clamped on the lower support 2 of the flip seat.

[0018] By respectively setting a limiting hole 101 and an arc-shaped groove 201 on the upper support 1 of the flip seat and the lower support 2 of the flip seat, when maintaining the cargo box and the frame, the limiting axle pin 4 is directly inserted into the limiting hole 101 and the arc-shaped groove 201, so as to limit and fix the upper support 1 of the flip seat and the lower support 2 of the flip seat to prevent the upper support 1 of the flip seat and the lower support 2 of the flip seat from rotating. The cargo box and the frame are fixed by the limiting axle pin 4, which is light in weight and simpler and more convenient to operate.

[0019] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tipping seat pin limit device for a dump semi-trailer, comprising a tipping seat upper support (1) arranged on a cargo box and a tipping seat lower support (2) arranged on a vehicle frame, wherein the tipping seat upper support (1) and the tipping seat lower support are provided with bolt holes (3) for connecting bolts (5), and the device is characterized in that: The upper support (1) of the flip seat is provided with a limit hole (101), and the lower support (2) of the flip seat is provided with an arc-shaped groove (201) matching the limit hole (101). The upper support (1) of the flip seat and the lower support (2) of the flip seat are fixedly limited by a limit shaft pin (4). When the cargo box is rotated to a certain angle on the frame, the limit hole (101) is aligned with the position of the arc-shaped groove (201), and the limit shaft pin (4) is inserted to prevent the upper support (1) of the flip seat and the lower support (2) of the flip seat from rotating.

2. The tipping seat pin limit device for a dump trailer according to claim 1 is characterized in that: The center of the limiting hole (101) and the center of the bolt hole (3) of the upper support (1) of the flip seat are located on the same vertical line, and the limiting hole (101) is arranged above the bolt hole (3) of the upper support of the flip seat.

3. The tipping seat pin limit device for a dump trailer according to claim 2 is characterized in that: The center of the arc-shaped slot (201) is arranged on the upper edge line of the lower support (2) of the flip seat, and the angle between the center of the arc-shaped slot (201) and the vertical line where the center of the bolt hole (3) is located is between 35 and 45 degrees.

4. The tipping seat pin limit device for a dump trailer according to claim 1, characterized in that: The limiting shaft pin (4) comprises a shaft pin body (401) and a limiting ring (402) arranged at one end of the shaft pin body (401); a positioning cylinder (403) is sleeved on the shaft pin body (401); a pin hole is formed at one end of the shaft pin body (401) away from the limiting ring (402); a cotter pin (404) is arranged in the pin hole.

5. The tipping seat pin limit device for a dump trailer according to claim 4 is characterized in that: The positioning cylinder (403) is clamped on the lower support (2) of the turning seat.

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