Carriage of trailer

Abstract

The carriage of the trailer comprises a side beam, the side beam comprises a top wall extending horizontally and a side wall extending vertically, and a wear-resistant pad extending in the length direction of the side beam is arranged on the upper surface of the top wall; a guide rail clamp is fixed to the outer side face of the side wall and comprises a connecting part fixed to the side wall and a limiting part located above the connecting part, the connecting part is in a plate shape, a base plate is clamped between the connecting part and the side wall, and a part of the base plate extends upwards to the inner side of the limiting part. A gap with the top, the front end and the rear end opened is formed between the limiting part and the base plate. The connecting part and the base plate are fixedly connected to the side wall in a detachable mode. The guide rails are supported by the wear-resistant pads in the height direction, and the guide rails are supported by the base plates in the width direction of the frame, so that the guide rails are prevented from being in direct contact with the side beams, and the service lives of the frame and the sliding frame are prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of vehicles, and in particular to a sliding frame of a trailer. Background Art

[0002] Traditional trailers directly install the suspension system on the trailer frame, and the suspension system cannot be adjusted in the longitudinal direction of the trailer frame. As a result, when the trailer is fully loaded or unloaded, the load cannot be reasonably distributed. In order to enable the trailer to reasonably distribute the load when it is fully loaded or unloaded, a slide is usually configured on the trailer frame, and the suspension system is installed on the slide. The slide can be adjusted in the longitudinal direction of the trailer frame. According to the specific loading conditions of the trailer, the slide can be adjusted in the longitudinal direction of the trailer frame. However, when the existing slide is adjusted, it slides relative to the trailer frame, and the friction between the slide and the frame causes the slide and the frame to wear. In addition, during the driving of the trailer, vibration causes frequent relative movement between the slide and the frame, and the frequent relative movement causes excessive wear of the slide and the frame, which seriously affects the service life of the trailer. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a sliding frame for a trailer with a longer service life.

[0004] To achieve the above object, the present invention adopts the following technical solution: The slide frame of a trailer is characterized in that it includes a side beam, the side beam includes a horizontally extending top wall and a vertically extending side wall, the upper surface of the top wall is provided with a wear-resistant pad extending along the length direction of the side beam; a guide rail clamp is fixed to the outer surface of the side wall, the guide rail clamp includes a connecting portion fixed to the side wall, and a limiting portion located above the connecting portion, the connecting portion is plate-shaped, a pad is clamped between the connecting portion and the side wall, a part of the pad extends upward to the inner side of the limiting portion, and a gap with a top and front and rear ends open is formed between the limiting portion and the pad; the connecting portion and the pad are fixedly connected to the side wall in a detachable manner.

[0005] The backing plate is a plastic plate or a composite material plate.

[0006] The limiting portion includes a first section bent from the top of the connecting portion toward a direction away from the side wall, a second section located above the first section and spaced apart from the first section, and a third section connected between the first section and the outer sides of the second section.

[0007] The connecting portion, the backing plate and the side wall are fixedly connected together by bolts or rivets passing through them.

[0008] It also includes a locking pin, a through hole is set on the side wall, the locking pin is inserted into the through hole, and a driving mechanism is set on the inner side of the locking pin, which is used to drive the locking pin to move between a first position protruding from the outer side of the side wall and a second position located on the inner side of the side wall.

[0009] The pad is located at the periphery of the through hole.

[0010] The backing plate is arranged around the through hole, and an avoidance hole for the locking pin to pass through is arranged on the backing plate.

[0011] The top edge of the backing plate extends to the top of the side wall and is flush with the top of the side wall.

[0012] The utility model comprises two side beams which are arranged opposite to each other and a plurality of cross beams which are connected between the side beams.

[0013] The beneficial effects of the present invention are: The slide of the present invention provides support for the guide rail in the height direction through the wear-resistant pad, and provides support for the guide rail in the width direction of the frame through the pad, so as to avoid direct contact between the guide rail and the side beam, which is beneficial to extending the service life of the frame and the slide; in addition, the pad is fixed to the side wall in a detachable manner. When the wear thickness of the pad reaches a certain degree, the pad can be removed from the side beam to be replaced with a new pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of an embodiment of the present invention; Figure 2 for Figure 1 Magnified view at A in the middle; Figure 3 for Figure 2 BB cross-sectional view; Figure 4 It is a structural schematic diagram of another embodiment of the present invention. Implementation

[0015] Below, in conjunction with the accompanying drawings and specific embodiments, the present invention is further described: like Figure 1 , 2As shown in Figure 3, a carriage of a trailer of the present invention comprises a side beam 10. The side beam 10 may be formed by bending a plate, and comprises a horizontally extending top wall 11 and a vertically extending side wall 12. The side wall 12 may be formed by bending the outer edges of the top wall 11 toward each other. A wear-resistant pad 13 is provided on the upper surface of the top wall 11. The wear-resistant pad 13 extends along the length direction of the side beam 10. The wear-resistant pad 13 may be an integral structure placed on the upper surface of the top wall 11. Of course, the wear-resistant pad 13 may also be a multi-segment structure, which is arranged on the upper surface of the top wall 11 along the length direction of the side beam 10 to form a non-continuous structure; a guide rail clamp is fixed on the outer surface of the side wall 12 30, and a pad 20 corresponding to the guide rail clamp 30, the guide rail clamp 30 includes a connecting portion 31 and a limiting portion, the connecting portion 31 is in a plate-like structure, the pad 20 is attached to the outer side of the side wall 12, the connecting portion 31 is attached to the outer side of the pad 20, and the pad 20 and the connecting portion 31 are both fixed to the side wall 12; the limiting portion is located above the connecting portion 31, a part of the pad 20 extends upward, so that at least a part of the pad 20 is located on the inner side of the limiting portion, and a gap is formed between the limiting portion and the pad 20, the top of the gap forms an opening 35, and the front and rear ends form an opening 36 respectively, so that the gap forms a structure with a top and both the front and rear ends open. The connecting portion 31 and the pad 20 are fixedly connected to the side wall 12 in a detachable manner.

[0016] After the above-mentioned slide is assembled with the frame of the trailer, the guide rail 90 on the frame cooperates with the side beam 10. Specifically, the top plate 92 of the guide rail 90 is placed above the top wall 11, and the side plate 91 of the guide rail is placed on the outside of the side wall 12, and the side wall 91 passes through the gap. After the top plate 92 is placed above the top wall 11, it contacts the upper surface of the wear-resistant pad 13. After the side plate 91 is embedded in the gap, it contacts and cooperates with the outer surface of the pad 20, that is, in the height direction, the wear-resistant pad 13 is used to provide support for the guide rail 90, and in the width direction of the frame, the pad 20 is used to provide support for the guide rail 90 to avoid direct contact between the guide rail 90 and the side beam 10. When the slide is adjusted along the longitudinal direction of the frame, When the guide rail 90 is in the position, the guide rail 90 and the wear-resistant pad 13 and the pad 20 frictionally cooperate to prevent excessive wear of the guide rail 90 and the side beam 10 of the frame. At the same time, when the trailer is in the driving state, due to the relative movement between the frame and the slide caused by vibration, the pad 20 mentioned above can also prevent the side beam 10 from directly contacting the guide rail 90, and then further protect the side beam 10 and the guide rail 90, and ultimately help to extend the service life of the frame and the slide; in addition, the pad 20 is fixed to the side wall 12 in a detachable manner. When the wear thickness of the pad 20 reaches a certain level, the pad 20 can be removed from the side beam 10 to be replaced with a new pad 20.

[0017] In the present invention, the backing plate 20 is a plate made of plastic material, specifically UHMW (ultra-high molecular weight polyethylene). Of course, the backing plate 20 may also be made of a composite material with high wear resistance, such as chromium carbide composite material. The above-mentioned limiting portion includes a first section 32, a second section 33 and a third section 34. The first section 32 is formed by bending the top of the connecting portion 31 in a direction away from the side wall 12. The second section 33 is located above the first section 32 and is set at a certain distance from the first section 32. The third section 34 is connected between the first section 32 and the second section 33. The above-mentioned opening 35 is located between the second section 33 and the pad 20. In this way, the above-mentioned gap forms an outwardly extending portion below the second section 33. The bottom of the side plate 91 of the guide rail 90 is provided with a bottom plate 93 formed by bending outward, and the bottom plate 93 is accommodated in the outwardly extending portion of the above-mentioned gap. In this way, the upper side of the bottom plate 93 is limited by the second section 33, and the bottom plate 93 and the second section 33 cooperate to form a limiting mechanism, which is used to limit the relative position of the guide rail 90 and the side beam 10 in the height direction, thereby preventing the guide rail 90 from being separated from the side beam 10 in the height direction.

[0018] The connecting portion 31, the backing plate 20, and the side wall 12 are fixedly connected together by bolts 50 that cross the three of them, so as to achieve the detachable cooperation between the connecting portion 31, the backing plate 20 and the side wall 12. When the backing plate 20 needs to be replaced, the bolts 50 can be loosened, and the guide rail clamp 30 and the backing plate 20 are removed from the side wall 12 in turn, and then a new backing plate 20 is replaced. In other embodiments, the connecting portion 31, the backing plate 20, and the side wall 12 can also be fixed together by rivets that cross the three of them. When the backing plate 20 needs to be replaced, the rivets are removed, and the connecting portion 31, the new backing plate 20 and the side wall 12 are riveted and fixed together by new rivets. Of course, the connecting portion 31 and the backing plate 20 can also be fixed to the side wall 12 by other detachable connection methods.

[0019] The slide of the present invention further comprises a locking pin 40. A through hole 14 is provided on the side wall 12 corresponding to the position of the locking pin 40. The locking pin 40 is inserted into the through hole. A driving mechanism is also provided on the inner side of the locking pin 40. The driving mechanism is used to reciprocate the locking pin 40 along the width direction of the slide so that the locking pin 40 can move between a first position protruding from the outer side of the side wall 12 and a second position located on the inner side of the side wall 12. When the locking pin 40 is in the first position, the locking pin 40 passes through the through hole 14 and then penetrates into the preset position on the guide rail 90. In this way, the guide rail 90 and the side beam 10 are locked by the locking pin 40. At this time, the trailer can be in a state where it can be driven. When the position of the slide needs to be adjusted, the driving mechanism drives the locking pin 40 to move to the second position. At this time, the locking pin 40 no longer limits the relative positions of the guide rail 90 and the side beam 10, and then the position of the slide can be adjusted. When the slide is adjusted to the appropriate position, the driving mechanism drives the locking pin 40 to move to the first position, so that the locking pin 40 passes through the through hole 14 and is inserted into the locking pin hole at the corresponding position on the guide rail 90.

[0020] The pad 20 may be arranged at the periphery of the through hole 14, that is, the pad 20 and the guide rail clamp 30 are arranged as close to the locking pin 40 as possible; see Figure 4 In other embodiments, the backing plate 20 may be arranged around the through hole 14, that is, the backing plate 20 is arranged at the periphery of the locking pin 40, and a avoidance hole 21 is arranged on the backing plate 20, through which the locking pin 40 can pass. In this way, the installation positions of the guide rail clamp 30, the backing plate 20 and the locking pin 40 on the side beam 10 coincide. Since the guide rail clamp 30 limits the guide rail 90, during the driving process of the trailer, the guide rail 90 contacts the side beam 10 most frequently at the guide rail clamp 30. Therefore, if Figure 4 In the structure shown, the positions of the guide rail clamp 30 , the pad 20 and the locking pin 40 are overlapped, and the pad 20 is arranged at the position where the guide rail 90 and the side beam 10 frequently contact, thereby further reducing the wear of the guide rail 90 and the side beam 10 .

[0021] The slide frame of the trailer of the present invention includes two oppositely arranged side beams 10, the cross section of the side beam 10 can be set to be C-shaped or G-shaped, and a plurality of cross beams 60 are connected between the two side beams 10. The main body of the slide frame forms a frame structure through the two side beams 10 and the plurality of cross beams 60.

[0022] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A carriage for a trailer, characterized in that: It includes a side beam, which includes a horizontally extending top wall and a vertically extending side wall, and the upper surface of the top wall is provided with a wear-resistant pad extending along the length direction of the side beam; a guide rail clamp is fixed to the outer surface of the side wall, and the guide rail clamp includes a connecting portion fixed to the side wall, and a limiting portion located above the connecting portion, the connecting portion is plate-shaped, and a pad is clamped between the connecting portion and the side wall, a part of the pad extends upward to the inner side of the limiting portion, and a gap with a top and front and rear ends being open is formed between the limiting portion and the pad; the connecting portion and the pad are fixedly connected to the side wall in a detachable manner.

2. The trailer carriage according to claim 1, characterized in that: The backing plate is a plastic plate or a composite material plate.

3. The trailer carriage according to claim 1, characterized in that: The limiting portion includes a first section bent from the top of the connecting portion toward a direction away from the side wall, a second section located above the first section and spaced apart from the first section, and a third section connected between the first section and the outer sides of the second section.

4. The trailer carriage according to claim 1, characterized in that: The connecting portion, the backing plate and the side wall are fixedly connected together by bolts or rivets passing through them.

5. The trailer carriage according to claim 1, characterized in that: It also includes a locking pin, a through hole is set on the side wall, the locking pin is inserted into the through hole, and a driving mechanism is set on the inner side of the locking pin, which is used to drive the locking pin to move between a first position protruding from the outer side of the side wall and a second position located on the inner side of the side wall.

6. The carriage of the trailer according to claim 5, characterized in that: The pad is located at the periphery of the through hole.

7. The carriage of a trailer according to claim 5, characterized in that: The backing plate is arranged around the through hole, and an avoidance hole for the locking pin to pass through is arranged on the backing plate.

8. The trailer carriage according to claim 1, characterized in that: The top edge of the backing plate extends to the top of the side wall and is flush with the top of the side wall.

9. The carriage of a trailer according to claim 1, characterized in that: The utility model comprises two side beams which are arranged opposite to each other and a plurality of cross beams which are connected between the side beams.

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