Foldable semitrailer cargo loading and unloading platform

Abstract

The utility model discloses a foldable semi-trailer cargo loading and unloading platform, which belongs to the technical field of cargo loading and unloading, and is characterized in that a support mechanism is arranged in a support frame, the support mechanism opens the folded platform for loading and unloading, one end of the support frame is provided with an inclined plane mechanism, and the inclined plane mechanism opens a folded cargo loading and unloading slide way; the folding type folding table has the advantages of being suitable for environments with various widths, capable of being rapidly moved and carried and foldable.

Description

Technical Field

[0001] The utility model relates to the technical field of cargo loading and unloading, in particular to a foldable semi-trailer cargo loading and unloading platform. Background Art

[0002] Semi-trailer cargo loading and unloading platform is a kind of equipment used for loading and unloading cargo of semi-trailer. Semi-trailer is a common road transport tool, mainly composed of two parts: tractor and trailer. When loading and unloading cargo, semi-trailer needs to be used in conjunction with loading and unloading platform to improve loading and unloading efficiency and safety. Today's semi-trailer loading and unloading platforms are mostly large in size and cumbersome to operate, which affects loading and unloading efficiency.

[0003] In the prior art, the utility model with announcement number CN212893704U discloses a cargo loading and unloading platform, including a platform for loading and unloading cargo, and a lifting platform is arranged in the middle of the platform. On the ground in front of the lifting platform, an early warning mechanism is arranged to remind the driver to pay attention to braking and prevent the truck from hitting the lifting platform. The early warning mechanism includes two parts: a first early warning component and a second early warning component. The first early warning component is arranged on the side away from the platform. When the rear of the truck approaches the platform and passes through the first early warning component, the component will emit a strong light and an alarm to remind the driver to pay attention to braking. The second early warning component is close to the platform. When the driver does not pay attention to the alarm and the truck continues to move past the second early warning component, the component will also emit a strong light and an alarm to remind the driver to brake again. In addition, the stopper component will act to block the rear wheels of the truck and limit the truck from continuing to move, thereby preventing the truck from hitting the lifting platform and protecting the safety of equipment, vehicles and personnel. However, the device faces the problem of being unable to be transported and moved at any time, and the applicable environment is relatively limited. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the disadvantages of the prior art and provide a foldable semi-trailer cargo loading and unloading platform suitable for environments of various widths and for fast movement and transportation.

[0005] The technical solution adopted to solve the above technical problems is: a support mechanism is arranged inside the support frame, the support mechanism props up the foldable platform for loading and unloading, and a slope mechanism is arranged at one end of the support frame, the slope mechanism props up the foldable cargo loading and unloading slide.

[0006] Furthermore, the support mechanism includes a motor, which is fixedly mounted on the support frame, the drive shaft of the motor is fixedly connected to the first end of the first connecting rod, the drive shaft of the motor is fixedly connected to the first sector gear, the first sector gear is meshingly connected to the second sector gear, the second sector gear is fixedly connected to the first fixed column, the first fixed column is fixedly connected to the first end of the second connecting rod, the second end of the second connecting rod is rotatably connected to the first end of the third connecting rod, the second end of the third connecting rod is rotatably connected to the first end face of the sliding platform, and the first end of the sliding platform is slidably connected to the displacement groove set on the inner wall of the support frame.

[0007] Furthermore, the second end of the first connecting rod is rotatably connected to the first end surface of the folding platform, the two ends of the folding platform are slidably connected to the inner wall of the support frame, the first end surface of the folding platform is rotatably connected to the first end of the fourth connecting rod, and the second end of the fourth connecting rod is rotatably connected to the inner wall of the support frame.

[0008] Furthermore, a first support seat is fixedly installed near the middle of the folding platform, a second fixed column is fixedly installed near the other end of the first support seat, the middle of the second fixed column is rotatably connected to the first end of the fifth connecting rod, the second end of the fifth connecting rod is rotatably connected to the first end of the sixth connecting rod, the second end of the sixth connecting rod is rotatably connected to the second support seat near the first end, the second end of the second support seat is rotatably connected to the third fixed column, and the third fixed column is fixedly installed on the middle end face of the sliding platform.

[0009] Furthermore, a limit baffle is fixedly installed on the inner wall of the support frame, and the limit baffle is in contact with and fits with the sixth connecting rod at a specific time.

[0010] Furthermore, a first gear is rotatably installed on the second end surface of the support frame, a handle is fixedly installed on the first gear, the first gear is meshed and connected with the second gear, the second gear is fixedly connected with the fourth fixed column, the fourth fixed column is rotatably installed inside the support frame, the fourth fixed column is fixedly connected to the first end of the seventh connecting rod, the second end of the seventh connecting rod is fixedly connected to the fifth fixed column, the fifth fixed column is rotatably connected to the first end of the eighth connecting rod, the second end of the eighth connecting rod is rotatably connected to the middle part of the fixed plate, the first end of the fixed plate is rotatably connected to the first end of the ninth connecting rod, and the second end of the ninth connecting rod is rotatably connected to the second end surface of the support frame.

[0011] Furthermore, a roller is rotatably mounted on the second end of the fixed plate, the fixed plate is fixedly mounted on one end surface of the inclined platform, a sliding inclined plate is slidably mounted inside the inclined platform, and pull rods are fixedly mounted on both ends of the sliding inclined plate.

[0012] The beneficial effects of the utility model are as follows: (1) After the semi-trailer is parked, the operator can place the device directly behind or on the side of the semi-trailer according to usage requirements. When transporting small goods from the rear of the vehicle, it is only necessary to rotate the inclined mechanism to generate a small loading and unloading platform. When transporting large goods from the side of the vehicle, the support mechanism and the inclined mechanism work simultaneously, and the device unfolds from a folded state to generate a large loading and unloading platform. The device is small in size and is relatively easy to carry. It can be quickly unfolded from a folded state when working. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of a semi-trailer cargo loading and unloading platform.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the first part of the support mechanism.

[0015] Figure 3 It is a structural diagram of the second part of the supporting mechanism.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the third part of the support mechanism.

[0017] Figure 5 It is a structural diagram of the inclined plane mechanism.

[0018] Figure 6 It is a schematic diagram of the cross-sectional structure of the inclined plane mechanism.

[0019] Figure 7 yes Figure 5 Schematic diagram of the enlarged structure of A.

[0020] Figure numerals: 1-support frame; 2-support mechanism; 3-inclined mechanism; 201-motor; 202-first connecting rod; 203-first sector gear; 204-second sector gear; 205-first fixed column; 206-second connecting rod; 207-third connecting rod; 208-sliding platform; 209-displacement slide; 210-folding platform; 211-fourth connecting rod; 212-first support seat; 213-second fixed column; 214-fifth Connecting rod; 215-sixth connecting rod; 216-second supporting seat; 217-third fixed column; 218-limit baffle; 301-first gear; 302-handle; 303-second gear; 304-fourth fixed column; 305-seventh connecting rod; 306-fifth fixed column; 307-eighth connecting rod; 308-fixed plate; 309-ninth connecting rod; 310-roller; 311-inclined platform; 312-pull rod; 313-sliding inclined plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] like Figure 1 As shown, the foldable semi-trailer cargo loading and unloading platform of this embodiment includes a support frame 1, a support mechanism 2, and a ramp mechanism 3. The support frame 1 is provided with the support mechanism 2 inside, and the support mechanism 2 props up the foldable platform for loading and unloading. One end of the support frame 1 is provided with the ramp mechanism 3, and the ramp mechanism 3 props up the foldable cargo loading and unloading slide.

[0023] like Figure 2-Figure 4 As shown, the supporting mechanism 2 includes a motor 201, a first connecting rod 202, a first sector gear 203, a second sector gear 204, a first fixed column 205, a second connecting rod 206, a third connecting rod 207, a sliding platform 208, a displacement slide 209, a folding platform 210, a fourth connecting rod 211, a first supporting seat 212, a second fixed column 213, a fifth connecting rod 214, a sixth connecting rod 215, a second supporting seat 216, a third fixed column 217, and a limit baffle 218.

[0024] The supporting mechanism 2 is as follows: the motor 201 is fixedly mounted on the supporting frame 1, the driving shaft of the motor 201 is fixedly connected to the first end of the first connecting rod 202, the driving shaft of the motor 201 is fixedly connected to the first sector gear 203, the first sector gear 203 is meshedly connected to the second sector gear 204, the second sector gear 204 is fixedly connected to the first fixed column 205, the first fixed column 205 is fixedly connected to the first end of the second connecting rod 206, the second end of the second connecting rod 206 is rotatably connected to the first end of the third connecting rod 207, the second end of the third connecting rod 207 is rotatably connected to the first end face of the sliding platform 208, the first end of the sliding platform 208 is slidably connected to the displacement slide groove 209 provided on the inner wall of the supporting frame 1, the second end of the first connecting rod 202 is rotatably connected to the first end face of the folding platform 210, the two ends of the folding platform 210 are slidably connected to the inner wall of the supporting frame 1, and the first end face of the folding platform 210 is rotatably connected to the first end of the fourth connecting rod 211 Then, the second end of the fourth connecting rod 211 is rotatably connected to the inner wall of the support frame 1, and the first support seat 212 is fixedly installed near the middle of the folding platform 210, and the first support seat 212 supports the folding platform 210. A second fixed column 213 is fixedly installed near the other end of the first support seat 212, and the middle part of the second fixed column 213 is rotatably connected to the first end of the fifth connecting rod 214, and the second end of the fifth connecting rod 214 is rotatably connected to the first end of the sixth connecting rod 215. The second end of the sixth connecting rod 215 is rotatably connected to the second support seat 216 near the first end, and the second support seat 216 supports the sliding platform 208. The second end of the second support seat 216 is rotatably connected to the third fixed column 217, and the third fixed column 217 is fixedly installed on the middle end surface of the sliding platform 208. A limit baffle 218 is fixedly installed on the inner wall of the support frame 1. When the first support seat 212 is reset, the limit baffle 218 contacts and fits with the sixth connecting rod 215.

[0025] The function of the support mechanism 2 is as follows: when loading and unloading cargo on the semi-trailer, the motor 201 is started, and the folding platform 210 is driven to swing toward the outside of the support frame 1 through the first connecting rod 202, and then supported by the first support seat 212, the motor 201 drives the first sector gear 203 to mesh with the second sector gear 204, and the sliding platform 208 is driven to slide upward at the displacement slide groove 209 through the swing of the second connecting rod 206, and during the movement of the sliding platform 208 and the first support seat 212, the second support seat 216 will be pulled to swing respectively, so that the second support seat 216 One end is in contact with the inner wall of the support frame 1 to support the sliding platform 208 after movement, and the folding platform 210 is unfolded toward both sides of the support frame 1. The sliding platform 208 rises from the bottom of the support frame 1 to provide platform support for the goods in the trailer. When the device is folded after loading and unloading, the first support seat 212 moves to drive the fifth connecting rod 214 and the sixth connecting rod 215 to fold. At this time, one end of the sixth connecting rod 215 will touch the limit baffle 218, and the force cannot continue to fold, thereby pushing the second support seat 216 at one end to swing inward, so that the sliding platform 208 can move and reset.

[0026] like Figure 5-Figure 7 As shown, the inclined plane mechanism 3 includes a first gear 301, a handle 302, a second gear 303, a fourth fixed column 304, a seventh connecting rod 305, a fifth fixed column 306, an eighth connecting rod 307, a fixed plate 308, a ninth connecting rod 309, a roller 310, an inclined plane platform 311, a pull rod 312, and a sliding inclined plate 313.

[0027] The inclined plane mechanism 3 is as follows: the second end surface of the support frame 1 is rotatably mounted with a first gear 301, a handle 302 is fixedly mounted on the first gear 301, the first gear 301 is meshedly connected with the second gear 303, the second gear 303 is fixedly connected with a fourth fixed column 304, the fourth fixed column 304 is rotatably mounted inside the support frame 1, the fourth fixed column 304 is fixedly connected with a first end of a seventh connecting rod 305, the second end of the seventh connecting rod 305 is fixedly connected with a fifth fixed column 306, the fifth fixed column 306 is rotatably connected with a first end of an eighth connecting rod 307, the second end of the eighth connecting rod 307 is rotatably connected with a fixing plate The middle part of 308 is rotatably connected, the first end of the fixed plate 308 is rotatably connected to the first end of the ninth connecting rod 309, the second end of the ninth connecting rod 309 is rotatably connected to the second end face of the support frame 1, the second end of the fixed plate 308 is rotatably installed with a roller 310, the fixed plate 308 is fixedly installed on one end face of the inclined platform 311, a sliding inclined plate 313 is slidably installed inside the inclined platform 311, and pull rods 312 are fixedly installed at both ends of the sliding inclined plate 313. By manually pulling the pull rod 312, the sliding inclined plate 313 inside the inclined platform 311 can be pulled out, and an inclined panel can be added to the unfolded folding platform 210.

[0028] The function of the inclined mechanism 3 is: after the support mechanism 2 is unfolded, the handle 302 is manually turned to drive the seventh connecting rod 305 to swing through the gear meshing, the seventh connecting rod 305 pushes the eighth connecting rod 307 to move, and the eighth connecting rod 307 pushes one end of the inclined platform 311, and the inclined platform 311 moves along the rolling direction of the roller 310 through the rolling of the roller 310, so that the end of the inclined platform 311 away from the roller 310 is in contact with the top of the support frame 1 and leans against the support frame 1, and then the goods carried on the support mechanism 2 can be transferred to the ground through the plane above the inclined platform 311. After loading and unloading, the handle 302 is turned again, and the inclined platform 311 begins to fold and reset.

[0029] The working principle of the present invention is as follows: when loading and unloading goods on the semi-trailer, the motor 201 is started, and the folding platform 210 is driven to swing toward the outside of the support frame 1 through the first connecting rod 202, and then supported by the first support seat 212. The motor 201 drives the first sector gear 203 to mesh with the second sector gear 204, and drives the sliding platform 208 to slide upward at the displacement slide groove 209 through the swing of the second connecting rod 206. During the movement of the sliding platform 208 and the first support seat 212, the second support seat 216 will be pulled to swing respectively, so that one end of the second support seat 216 is in contact with the inner wall of the support frame 1 to support the sliding platform 208 after the movement. The folding platform 210 is unfolded toward both sides of the support frame 1, and the sliding platform 208 rises from the bottom of the support frame 1 to provide platform support for the goods in the trailer. When the loading and unloading is completed and the device is folded, the first support seat 212 moves to drive the fifth connecting rod 214 , the sixth connecting rod 215 is folded, at which time one end of the sixth connecting rod 215 will touch the limit baffle 218, and the force cannot be continued to fold, thereby pushing the second support seat 216 at one end to swing inward, so that the sliding platform 208 can move and reset. After the support mechanism 2 is unfolded, the handle 302 is manually turned to drive the seventh connecting rod 305 to swing through the gear meshing, and the seventh connecting rod 305 pushes the eighth connecting rod 307 to move. The eighth connecting rod 307 pushes one end of the inclined platform 311, and the inclined platform 311 moves along the rolling direction of the roller 310 through the rolling of the roller 310, so that the end of the inclined platform 311 away from the roller 310 is in contact with the top of the support frame 1 and leans on the support frame 1. Then, the goods carried on the support mechanism 2 can be transferred to the ground through the plane above the inclined platform 311. After loading and unloading, the handle 302 is turned again, and the inclined platform 311 begins to fold and reset.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A foldable semi-trailer cargo loading and unloading platform, comprising a support frame (1), Features: A support mechanism (2) is provided inside the support frame (1), and the support mechanism (2) props up a foldable platform for loading and unloading; an inclined surface mechanism (3) is provided at one end of the support frame (1), and the inclined surface mechanism (3) props up a foldable cargo loading and unloading slideway; The support mechanism (2) includes a motor (201), the motor (201) is fixedly mounted on the support frame (1), the drive shaft of the motor (201) is fixedly connected to the first end of the first connecting rod (202), the drive shaft of the motor (201) is fixedly connected to the first sector gear (203), the first sector gear (203) is meshingly connected to the second sector gear (204), the second sector gear (204) is fixedly connected to the first fixed column (205), the first fixed column (205) is fixedly connected to the first end of the second connecting rod (206), the second end of the second connecting rod (206) is rotatably connected to the first end of the third connecting rod (207), the second end of the third connecting rod (207) is rotatably connected to the first end face of the sliding platform (208), and the first end of the sliding platform (208) is slidably connected to a displacement slide groove (209) provided on the inner wall of the support frame (1).

2. A foldable semi-trailer cargo loading and unloading platform according to claim 1, Features: The second end of the first connecting rod (202) is rotatably connected to the first end surface of the folding platform (210), the two ends of the folding platform (210) are slidably connected to the inner wall of the support frame (1), the first end surface of the folding platform (210) is rotatably connected to the first end of the fourth connecting rod (211), and the second end of the fourth connecting rod (211) is rotatably connected to the inner wall of the support frame (1).

3. A foldable semi-trailer cargo loading and unloading platform according to claim 2, Features: The folding platform (210) is fixedly installed with a first support seat (212) near the middle, and the first support seat (212) is fixedly installed with a second fixed column (213) near the other end, the middle of the second fixed column (213) is rotatably connected to the first end of the fifth connecting rod (214), the second end of the fifth connecting rod (214) is rotatably connected to the first end of the sixth connecting rod (215), the second end of the sixth connecting rod (215) is rotatably connected to the second support seat (216) near the first end, the second end of the second support seat (216) is rotatably connected to the third fixed column (217), and the third fixed column (217) is fixedly installed on the middle end surface of the sliding platform (208).

4. A foldable semi-trailer cargo loading and unloading platform according to claim 1, Features: A limit baffle (218) is fixedly mounted on the inner wall of the support frame (1), and the limit baffle (218) is in contact with and fits with the sixth connecting rod (215) at a specific time.

5. The foldable semi-trailer cargo loading and unloading platform according to claim 1, Features: A first gear (301) is rotatably mounted on the second end surface of the support frame (1); a handle (302) is fixedly mounted on the first gear (301); the first gear (301) is meshedly connected with the second gear (303); the second gear (303) is fixedly connected with a fourth fixed column (304); the fourth fixed column (304) is rotatably mounted inside the support frame (1); the fourth fixed column (304) is fixedly connected with the first end of the seventh connecting rod (305); the second end of the seventh connecting rod (305) is fixedly connected with the fifth fixed column (306); the fifth fixed column (306) is rotatably connected with the first end of the eighth connecting rod (307); the second end of the eighth connecting rod (307) is rotatably connected with the middle part of the fixing plate (308); the first end of the fixing plate (308) is rotatably connected with the first end of the ninth connecting rod (309); the second end of the ninth connecting rod (309) is rotatably connected with the second end surface of the support frame (1).

6. A foldable semi-trailer cargo loading and unloading platform according to claim 5, Features: A roller (310) is rotatably mounted on the second end of the fixed plate (308), the fixed plate (308) is fixedly mounted on one end surface of the inclined platform (311), a sliding inclined plate (313) is slidably mounted inside the inclined platform (311), and pull rods (312) are fixedly mounted on both ends of the sliding inclined plate (313).

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