Tail supporting assembly of semitrailer

Abstract

The utility model relates to the technical field of semitrailers, in particular to a tail supporting assembly of a semitrailer, which comprises a semitrailer body, wheels and a plurality of groups of supporting mechanisms, each group of supporting mechanism comprises a plurality of groups of rotating components, a supporting component and a withdrawing component, and each supporting component comprises an outer cylinder, an inner cylinder, a pedal plate, a contact plate, a first spring and a fixing unit. A plurality of adjusting grooves are formed in the inner cylinder, the rotating assemblies are evenly arranged below the vehicle body, the supporting assembly is arranged below one rotating assembly, the inner cylinder is movably connected with the outer cylinder, the contact plate is fixedly connected with the inner cylinder, the first spring is fixedly connected with the outer cylinder and the inner cylinder, the fixing unit is arranged outside the outer cylinder, and the pedal is fixedly connected with the inner cylinder. By means of the arrangement, the problem that due to the fact that the inner supporting cylinder is large in size and heavy in weight, the inner supporting cylinder is inconvenient to fold after being moved in and out of the outer supporting cylinder, and the supporting assembly is inconvenient to use is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a rear support assembly of a semi-trailer. Background Art

[0002] In daily life, low-bed semi-trailers are usually used to transport heavy-duty vehicles, rail vehicles, mining machinery, forestry machinery, construction machinery and other heavy-loaded goods. The lower the center of gravity, the better the stability and safety, and the stronger the ability to transport extra-high goods and pass overhead obstacles. During the use of low-bed semi-trailers, if the goods to be loaded or unloaded are heavy, when the goods move to the rear of the semi-trailer, its rear will be subject to greater pressure, causing the front of the semi-trailer to be light and the rear to be heavy, which in turn causes the front of the semi-trailer to be lifted, which may damage the front of the vehicle.

[0003] In the prior art, the CN219134122U patent discloses a tail support structure for a semitrailer, including: a semitrailer body; a fixed plate, fixed to the bottom surface of the rear of the semitrailer body; a support assembly, including an outer support tube, a first telescopic member, an inner support tube and a limit pin, the top of the support assembly is hinged to the bottom of the outer end of the fixed plate; a second telescopic member, the upper end of which is hinged to the bottom of the inner end of the fixed plate, and the lower end is hinged to the outer support tube and the fixed plate, support assembly and second telescopic member are designed near the bottom of the outer support tube, which can not only realize the support operation of the rear of the semitrailer, but also avoid damage to the first telescopic member in the support assembly. At the same time, the support assembly can be folded up and the position of the support assembly in the folded state can be fixed with the help of the second telescopic member, so as to avoid the swinging back and forth of the support assembly during the driving of the vehicle, thereby avoiding the problem of damage.

[0004] However, in the above solution, since the inner support tube is large in size and heavy in weight, it is not convenient to fold the inner support tube after it is moved in and out of the outer support tube, which makes the support assembly inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a rear support assembly for a semi-trailer, aiming to solve the problem that the support assembly is inconvenient to use because the inner support cylinder is large in size and heavy in weight, and it is inconvenient to fold the inner support cylinder after it is moved in and out of the outer support cylinder.

[0006] To achieve the above-mentioned purpose, the utility model adopts a rear support assembly of a semi-trailer, including a body, a wheel and a plurality of support mechanisms, each of which includes a plurality of rotating components, a support component and a retracting component, the support component includes an outer cylinder, an inner cylinder, a pedal plate, a contact plate, a first spring and a fixing unit, the inner cylinder has a plurality of adjustment grooves, the wheel is arranged below the body, a plurality of rotating components are evenly arranged below the body, the support component is arranged below one group of the rotating components, the retracting component is arranged below another group of the rotating components and cooperates with the support component, the outer cylinder is arranged below one group of the rotating components, the inner cylinder is movably connected to the outer cylinder and arranged inside the outer cylinder, the contact plate is fixedly connected to the inner cylinder and arranged below the inner cylinder, the first spring is fixedly connected to the outer cylinder and the inner cylinder and arranged between the outer cylinder and the inner cylinder, the fixing unit is arranged outside the outer cylinder and cooperates with the plurality of adjustment grooves, the pedal plate is fixedly connected to the inner cylinder and arranged outside the inner cylinder.

[0007] Wherein, the fixing unit includes a fixing rod, a guide frame, a second spring and a control block. The guide frame is fixedly connected to the outer tube and is arranged on the outside of the outer tube. The fixing rod is movably connected to the guide frame and is arranged in the middle of the guide frame, and passes through the outer tube to cooperate with multiple adjustment grooves respectively. The second spring is sleeved on the outside of the fixing rod and is arranged in the middle of the guide frame and the outer tube. The control block is fixedly connected to the fixing rod and is arranged at one end of the fixing rod.

[0008] Among them, each group of the rotating components also includes two connecting blocks, a rotating seat and a rotating shaft. The two connecting blocks are fixedly connected to the vehicle body and are evenly arranged below the vehicle body. The rotating seats are movably connected to the two connecting blocks and are arranged in the middle of the two connecting blocks. The rotating shafts are fixedly connected to the two connecting blocks and are arranged in the middle of the two connecting blocks, and cooperate with the rotating seats.

[0009] Wherein, the retraction assembly includes a telescopic rod, a connecting seat, a fixing plate and a fixing block, the connecting seat is arranged on the outside of the outer cylinder, the telescopic rod is arranged below one group of the rotating seats and cooperates with the connecting seat, the fixing plate is fixedly connected to the vehicle body and is arranged below the vehicle body, and the fixing block passes through the fixing plate and cooperates with the outer cylinder.

[0010] Among them, the rear support assembly of the semi-trailer also includes a protection component, which includes a blocking plate, a flip plate, a plurality of hooks and two lifting rings. The blocking plate is fixedly connected to the vehicle body and is arranged below the vehicle body. The flip plate is arranged below the vehicle body. The two hooks are arranged on the outside of the flip plate. The two lifting rings are respectively arranged on the side of the vehicle body and one side of the blocking plate, and respectively cooperate with the plurality of hooks.

[0011] The utility model provides a rear support assembly of a semi-trailer. Through the arrangement of multiple groups of support mechanisms, the multiple groups of support mechanisms play a role in supporting the rear of the vehicle body. Through the arrangement of multiple groups of rotating components, the multiple groups of rotating components play a role in respectively driving the support components and the retracting components to rotate. The arrangement of the support components plays a role in supporting the vehicle body, and the arrangement of the retracting components plays a role in driving the support components to be folded. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model.

[0014] Figure 2 It is a three-dimensional structural diagram of the support mechanism of the utility model.

[0015] Figure 3 It is a partial cross-sectional view of the support mechanism of the utility model.

[0016] Figure 4 It is a three-dimensional structural diagram of the second embodiment of the utility model.

[0017] 101-body, 102-wheel, 103-outer cylinder, 104-inner cylinder, 105-foot pedal, 106-contact plate, 107-first spring, 108-adjusting slot, 109-fixing rod, 110-guide frame, 111-second spring, 112-control block, 113-connecting block, 114-rotating seat, 115-rotating shaft, 116-telescopic rod, 117-connecting seat, 118-fixing plate, 119-fixing block, 201-blocking plate, 202-flipping plate, 203-hook, 204-lifting ring. DETAILED DESCRIPTION

[0018] The first embodiment is:

[0019] See also Figure 1 to Figure 3 ,in Figure 1 It is a structural schematic diagram of the first embodiment of the utility model. Figure 1 It is a structural schematic diagram of the first embodiment of the utility model. Figure 2 It is a three-dimensional structural diagram of the support mechanism of the utility model. Figure 3 It is a partial cross-sectional view of the support mechanism of the utility model.

[0020] The utility model provides a rear support assembly of a semi-trailer, including a vehicle body 101, wheels 102 and multiple groups of support mechanisms, each group of the support mechanisms includes multiple groups of rotating 114 components, support components and retracting components, the support components include an outer cylinder 103, an inner cylinder 104, a pedal plate 105, a contact plate 106, a first spring 107 and a fixing unit, the inner cylinder 104 is provided with multiple adjustment slots 108; the fixing unit includes a fixing rod 109, a guide frame 110, a second spring 111 and a control block 112; each group of the rotating 114 components also includes two connecting blocks 113, a rotating 114 seat and a rotating shaft 115; the retracting assembly includes a telescopic rod 116, a connecting seat 117, a fixing plate 118 and a fixing block 119. Through the above arrangement, the problem that the inner support cylinder is large in volume and heavy in weight, and it is inconvenient to retract the inner support cylinder after it is moved in and out of the outer support cylinder, thereby causing the support assembly to be inconvenient to use is solved.

[0021] According to the present specific embodiment, the wheel 102 is arranged below the vehicle body 101, a plurality of groups of the rotating 114 components are evenly arranged below the vehicle body 101, the supporting component is arranged below one group of the rotating 114 components, the retracting component is arranged below another group of the rotating 114 components and cooperates with the supporting component, the outer cylinder 103 is arranged below one group of the rotating 114 components, the inner cylinder 104 is movably connected to the outer cylinder 103 and arranged inside the outer cylinder 103, the contact plate 106 is fixedly connected to the inner cylinder 104 and arranged below the inner cylinder 104, and the first spring 107 is fixedly connected to the outer cylinder 103 and the inner cylinder 104 and arranged between the outer cylinder 103 and the inner cylinder 104. In the middle, the fixing unit is arranged on the outside of the outer cylinder 103, and cooperates with the multiple adjustment grooves 108. The foot plate 105 is fixedly connected to the inner cylinder 104 and is arranged on the outside of the inner cylinder 104. Through the setting of the outer cylinder 103, the outer cylinder 103 plays a role of covering the inner cylinder 104, and at the same time enables the inner cylinder 104 to move up and down in the outer cylinder 103. The setting of the first spring 107 plays a role in driving the inner cylinder 104 to move in the outer cylinder 103. The setting of the foot plate 105 plays a role in assisting the inner cylinder 104 to move out of the outer cylinder 103. The setting of the contact plate 106 plays a role in contacting the ground to support the vehicle body 101.

[0022] First, the guide frame 110 is fixedly connected to the outer cylinder 103 and is arranged on the outside of the outer cylinder 103. The fixed rod 109 is movably connected to the guide frame 110 and is arranged in the middle of the guide frame 110. The fixed rod 109 passes through the outer cylinder 103 and cooperates with the plurality of adjustment slots 108 respectively. The second spring 111 is sleeved on the outside of the fixed rod 109 and is arranged in the middle of the guide frame 110 and the outer cylinder 103. The control block 112 is fixedly connected to the fixed rod 109 and is arranged at one end of the fixed rod 109. The guide frame 110 is provided, and the guide frame 110 plays a role in guiding the fixing rod 109, so that the fixing rod 109 can move in the guide frame 110. The setting of the control block 112 plays a role in driving the fixing rod 109 to move in the guide frame 110, and at the same time drives the second spring 111 to be compressed and released, so as to realize the fixing rod 109 passing through the outer cylinder 103, and then cooperating with the inner cylinder 104, so as to realize the role of fixing the position of the inner cylinder 104 in the outer cylinder 103.

[0023] Among them, the two connecting blocks 113 are fixedly connected to the vehicle body 101 and are evenly arranged below the vehicle body 101. The rotating 114 group seats are movably connected to the two connecting blocks 113 and are arranged in the middle of the two connecting blocks 113. The rotating shaft 115 is fixedly connected to the two connecting blocks 113 and is arranged in the middle of the two connecting blocks 113, and cooperates with the rotating 114 seats. Through the setting of the two connecting blocks 113, the two connecting blocks 113 cooperate with the rotating shaft 115, so as to realize the function of driving the rotating 114 seats to rotate 114, so that multiple groups of the rotating 114 seats can respectively drive the telescopic rod 116 and the outer cylinder 103 to rotate 114.

[0024] Secondly, the connecting seat 117 is arranged on the outside of the outer cylinder 103, the telescopic rod 116 is arranged below one group of the rotating seats 114 and cooperates with the connecting seat 117, the fixing plate 118 is fixedly connected to the vehicle body 101 and is arranged below the vehicle body 101, the fixing block 119 passes through the fixing plate 118 and cooperates with the outer cylinder 103, and through the setting of the telescopic rod 116, the telescopic rod 116 cooperates with the connecting seat 117 arranged on the outside of the outer cylinder 103, so as to drive the outer cylinder 103 to rotate 114 around one of the rotating shafts 115, thereby driving the outer cylinder 103 to fold, and the setting of the fixing block 119 plays a role in passing through the fixing plate 118 and then cooperating with the outer cylinder 103, so as to fix the folded outer cylinder 103.

[0025] The rear support assembly of a semi-trailer using the present embodiment is provided with the support mechanism. When the vehicle body 101 needs to be supported, the fixing block 119 is removed from the fixing plate 118, the telescopic rod 116 is started, the telescopic rod 116 pushes the outer cylinder 103 to unfold, and the outer cylinder 103 is vertical to the ground, and then the control block 12 is pulled, the control block 112 drives the fixing rod 109 to move out of the inner cylinder 104, and at the same time drives the second spring 111 to be compressed, and the fixing rod 109 is moved out of the inner cylinder 104. After 109 is moved out of the inner cylinder 104, the foot pedal 105 is stepped on to drive the inner cylinder 104 to move out of the outer cylinder 103, and at the same time the first spring 107 is stretched, and the appropriate position of the inner cylinder 104 in the outer cylinder 103 is adjusted. After the adjustment, the control block 112 is released to reset the second spring 111, move out and push the fixing rod 109 to pass through the outer cylinder 103, and resist the inner cylinder 104, so as to fix the position of the inner cylinder 104 in the outer cylinder 103.

[0026] The second embodiment is:

[0027] Based on the first embodiment, please refer to Figure 4 ,in Figure 4 It is a three-dimensional structural diagram of the second embodiment of the utility model.

[0028] The utility model provides a rear support assembly of a semi-trailer, which also includes a protection component, wherein the protection component includes a blocking plate 201, a flip plate 202, a plurality of hooks 203 and two lifting rings 204. Through the arrangement of the protection component, the protection component plays a role in protecting each group of the support mechanisms respectively, thereby improving the service life of the support assembly.

[0029] According to this specific embodiment, the blocking plate 201 is fixedly connected to the vehicle body 101 and is arranged below the vehicle body 101. The flip plate 202 is arranged below the vehicle body 101. The two hooks 203 are arranged on the outside of the flip plate 202. The two hanging rings 204 are respectively arranged on the side of the vehicle body 101 and one side of the blocking plate 201, and respectively cooperate with the multiple hooks 203. Through the setting of the blocking plate 201, the blocking plate 201 cooperates with the flip plate 202 to achieve the effect of covering the support assembly. The setting of the two hanging rings 204 cooperates with the two hooks 203 respectively to achieve the effect of opening and closing the flip plate 202.

[0030] Using the rear support assembly of a semi-trailer of the present embodiment, through the setting of the protection component, when the support assembly needs to be unfolded, one of the hooks 203 is removed from the lifting ring 204 set on the blocking plate 201, so as to separate the flip plate 202 from the blocking plate 201. After separation, the other hook 203 is hung on the lifting ring 204 set on the side of the vehicle body 101, so as to reopen the flip plate 202.

[0031] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A rear support assembly of a semi-trailer, comprising a vehicle body and wheels, wherein the wheels are arranged below the vehicle body, and characterized in that: Also included are multiple sets of support mechanisms; Each group of the supporting mechanisms includes multiple groups of rotating components, supporting components and retracting components, the supporting components include an outer cylinder, an inner cylinder, a foot plate, a contact plate, a first spring and a fixing unit, the inner cylinder has multiple adjusting grooves, multiple groups of the rotating components are evenly arranged below the vehicle body, the supporting components are arranged below one group of the rotating components, the retracting components are arranged below another group of the rotating components and cooperate with the supporting components, the outer cylinder is arranged below one group of the rotating components, the inner cylinder is movably connected to the outer cylinder and arranged inside the outer cylinder, the contact plate is fixedly connected to the inner cylinder and arranged below the inner cylinder, the first spring is fixedly connected to the outer cylinder and the inner cylinder and arranged in the middle of the outer cylinder and the inner cylinder, the fixing unit is arranged outside the outer cylinder and cooperates with the multiple adjusting grooves, the foot plate is fixedly connected to the inner cylinder and arranged outside the inner cylinder.

2. The rear support assembly of a semitrailer according to claim 1, characterized in that: The fixing unit includes a fixing rod, a guide frame, a second spring and a control block. The guide frame is fixedly connected to the outer cylinder and is arranged on the outer side of the outer cylinder. The fixing rod is movably connected to the guide frame and is arranged in the middle of the guide frame, and passes through the outer cylinder to cooperate with the plurality of adjusting grooves respectively. The second spring is sleeved on the outer side of the fixing rod and is arranged in the middle of the guide frame and the outer cylinder. The control block is fixedly connected to the fixing rod and is arranged at one end of the fixing rod.

3. The rear support assembly of a semitrailer according to claim 2, characterized in that: Each group of the rotating components also includes two connecting blocks, a rotating seat and a rotating shaft. The two connecting blocks are fixedly connected to the vehicle body and are evenly arranged below the vehicle body. The rotating seats are movably connected to the two connecting blocks and are arranged in the middle of the two connecting blocks. The rotating shafts are fixedly connected to the two connecting blocks and are arranged in the middle of the two connecting blocks, and cooperate with the rotating seats.

4. The rear support assembly of a semitrailer as claimed in claim 3, characterized in that: The retraction assembly includes a telescopic rod, a connecting seat, a fixing plate and a fixing block. The connecting seat is arranged on the outside of the outer cylinder. The telescopic rod is arranged below one group of the rotating seats and cooperates with the connecting seat. The fixing plate is fixedly connected to the vehicle body and is arranged below the vehicle body. The fixing block passes through the fixing plate and cooperates with the outer cylinder.

5. The rear support assembly of a semitrailer as claimed in claim 4, characterized in that: The rear support assembly of the semi-trailer also includes a protection component, which includes a blocking plate, a flip plate, multiple hooks and two lifting rings. The blocking plate is fixedly connected to the vehicle body and is arranged below the vehicle body. The flip plate is arranged below the vehicle body. The two hooks are both arranged on the outside of the flip plate. The two lifting rings are respectively arranged on the side of the vehicle body and one side of the blocking plate, and respectively cooperate with the multiple hooks.

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