Fixed boarding bridge with adjustable height according to the height of the carriage

Abstract

The present invention relates to the technical field of boarding bridges, and more specifically, to a fixed boarding bridge that can adjust the height according to the height of a carriage. It includes a base, and a support plate is rotatably connected to the base. An angle control mechanism is provided on the support plate. The angle control mechanism is manually adjusted to rotate to a vertical state, which can be used for protection. The angle control mechanism is adjusted to an L shape, and the loading area can be increased while the angle control mechanism is protecting. The angle control mechanism is rotated to an inverted L shape, so that one side of the angle control mechanism is in contact with the ground, and is used for support while increasing the loading area. The present invention manually pulls the slide bar out of the circular hole of the fixed rod, and then manually rotates the baffle on the fixed rod to rotate multiple baffles to be parallel to the support plate, thereby increasing the loading range of the support plate, and then rotates another baffle to a vertical state, so that the multiple baffles are in an L shape as a whole, and the vertical baffles can protect both sides.

Description

Technical Field

[0001] The present invention relates to the technical field of boarding ramps, and in particular to a fixed boarding ramp whose height can be adjusted according to the height of a carriage. Background Art

[0002] Fixed loading ramp (also known as: height adjustment plate, platform, unloading platform) is a professional equipment installed on the warehouse platform to assist in the loading and unloading of truck cargo. It can realize the connection between the truck and the warehouse according to the height adjustment of the car body. It adopts single-button control and one-person operation to realize fast loading and unloading of cargo. It is widely used in large-scale logistics and distribution organizations such as warehouses, factories, warehousing logistics, etc. Fixed loading ramp provides a transition space from the ground platform to the vehicle compartment. When forklifts and other loading and unloading equipment move the goods out of the warehouse, the loading ramp is a natural stopping point before the goods arrive at the vehicle. If the space in the truck compartment has not been tidied up or other preparations are in progress, the loading ramp can be used as a temporary stacking point, so that the goods can be gradually loaded into the compartment according to the loading and unloading progress of the vehicle.

[0003] The existing fixed boarding bridge with adjustable height of the carriage has a fence composed of multiple railings. In logistics loading, various sizes of loading and unloading vehicles are often encountered. When encountering larger loading and unloading vehicles, the current fixed boarding bridge fence can reduce the space occupied on both sides of the vehicle by flipping, thereby increasing the scope of use of the boarding bridge. However, although this fence flipping method can increase the loading area, it will also greatly weaken the protective function of the side of the boarding bridge, which can easily cause the goods to fall from the side. In addition, if the flipped fence is not fixed in the new position, then during the loading process, the vibration of the vehicle or the movement of the goods is very likely to cause the fence to shake or shift, thereby reducing the stability of the entire boarding bridge. Summary of the invention

[0004] The object of the present invention is to provide a fixed boarding bridge whose height can be adjusted according to the height of the carriage, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention discloses a fixed boarding bridge that can adjust the height according to the height of the carriage, comprising a base, a support plate rotatably connected to the base, an angle adjustment mechanism provided on the support plate, the angle adjustment mechanism is manually adjusted to rotate to a vertical state, which can be used for protection, the angle adjustment mechanism is adjusted to an L shape, the loading area can be increased while the angle adjustment mechanism is provided for protection, the angle adjustment mechanism is rotated to an inverted L shape, so that one side of the angle adjustment mechanism is in contact with the ground, and the loading area is increased while the loading area is provided for support;

[0006] The angle regulating mechanism is provided with a fixing mechanism, and after the angle regulating mechanism completes the angle adjustment, the fixing mechanism can limit the angle regulating mechanism.

[0007] As a further improvement of the present technical solution, the angle control mechanism comprises at least a fixing rod rotatably connected in the groove of the support plate, and one side of the fixing rod is arranged to pass through one side of the support plate, and a baffle is fixedly connected to the outer wall of the fixing rod.

[0008] As a further improvement of the present technical solution, the angle control mechanism comprises at least a fixing rod rotatably connected in the groove of the support plate, and one side of the fixing rod is arranged to pass through one side of the support plate, and a baffle is fixedly connected to the outer wall of the fixing rod.

[0009] As a further improvement of the present technical solution, the fixing mechanism includes at least a support plate fixedly connected to the side of the baffle close to the rotating rod, a sliding rod is slidably connected to the support plate, a plurality of limiting holes are provided on the rotating rod, and the size of the limiting holes is adapted to the circular diameter of the sliding rod, a return spring is fixedly connected to the outer wall of the sliding rod, and the return spring is fixedly connected to the support plate on the side away from the sliding rod.

[0010] As a further improvement of the technical solution, a plurality of support plates, sliding rods and return springs are provided, and are respectively provided on one side of adjacent rotating rods, wherein one of the support plates, sliding rods and return springs is provided on one side of a fixed rod passing through the support plate.

[0011] As a further improvement of the technical solution, a plurality of fixing plates are fixedly connected to the support plate, and a mounting rod is rotatably connected between two adjacent fixing plates, and a clamping block is rotatably connected to the side of the mounting rod away from the fixing plate.

[0012] As a further improvement of the technical solution, a plurality of baffles are fixedly connected to a limiting block on one side close to the mounting rod, and the limiting block is snap-fitted with the clamping block.

[0013] As a further improvement of the technical solution, a plurality of anti-sliding blocks are fixedly connected to the support plate.

[0014] As a further improvement of the technical solution, an electric push rod is rotatably connected to the base, and a side of the electric push rod away from the base is rotatably connected to the bottom of the support plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the fixed boarding bridge that can adjust the height according to the height of the carriage, when the loading range needs to be increased and the loaded objects are light, the sliding rod is manually pulled out of the round hole of the fixed rod, and then the baffle on the fixed rod is manually rotated to rotate multiple baffles to be parallel to the support plate, thereby increasing the loading range of the support plate, and then another baffle is rotated to a vertical state, so that the multiple baffles are in an L shape as a whole, and the vertical baffles can protect both sides and prevent the goods from accidentally falling from both sides;

[0017] After the rotation is completed, the sliding rod is manually released, and the sliding rod is elastically moved so that the sliding rod is snapped into the adjacent circular hole on the fixed rod, thereby realizing the limiting effect on the fixed rod. During the loading process, the fixed rod will not rotate accidentally due to factors such as vibration and external force impact, thereby ensuring the normal operation of the entire device.

[0018] 2. In the fixed loading ramp that can adjust the height according to the height of the car body, when the loading range needs to be increased and the loaded objects are heavier, the baffle is manually adjusted to make the whole baffle into an inverted L shape, so that the baffle originally at the top contacts with the cargo platform after flipping, so that the baffle supports the base, so that the baffle can be firmly abutted above the cargo platform, adding additional support points for the entire device, ensuring the stability and safety of the loading process.

[0019] 3. In the fixed loading ramp that can adjust the height according to the height of the carriage, when there is no need to increase the loading range, the baffle can be manually rotated so that the baffle can rotate as a whole to a vertical position, which can effectively protect both sides of the support plate and enable the support plate to block the goods to prevent the goods from accidentally slipping and causing harm to the staff or goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the angle control mechanism structure of the present invention;

[0022] Figure 3 It is a schematic cross-sectional view of the whole of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the baffle in the folded state of the present invention;

[0024] Figure 5 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0025] Figure 6 It is a schematic diagram of the enlarged structure of point B of the present invention;

[0026] Figure 7 It is a schematic diagram of the enlarged structure of position C of the present invention;

[0027] Figure 8 It is a plan view of the first state of the angle control mechanism of the present invention;

[0028] Fig. 9 It is a plan view of the angle control mechanism of the present invention in the second state;

[0029] Fig.10 It is a plan view of the third state of the angle control mechanism of the present invention.

[0030] The meaning of each number in the figure is:

[0031] 100, base; 110, support plate; 111, anti-sliding block; 120, electric push rod; 130, fixing plate; 131, mounting rod; 132, clamping block;

[0032] 200, angle adjustment mechanism; 210, fixed rod; 211, baffle; 212, rotating rod; 213, connecting rod; 220, limit block;

[0033] 300, fixing mechanism; 310, support plate; 311, slide bar; 312, return spring. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 10 As shown, the present embodiment provides a fixed boarding ramp that can be adjusted in height according to the height of the carriage, including a base 100, a support plate 110 is rotatably connected to the base 100, and an angle adjustment mechanism 200 is provided on the support plate 110. By manually adjusting the angle adjustment mechanism 200 to rotate to a vertical state, it can be used to protect the two sides of the support plate 110 to prevent the cargo from accidentally sliding off the two sides of the support plate 110 during the loading process, causing harm to the staff or the cargo. When the angle adjustment mechanism 200 is adjusted to an L shape, the L shape not only increases the range of the support plate 110 for loading cargo in the horizontal direction, but also can By fencing off and protecting both sides of the support plate 110, the loading area can be increased while the angle adjustment mechanism 200 is providing protection. Therefore, when encountering a larger loading and unloading vehicle, the increased loading area can allow more goods to be loaded and unloaded at the same time, thereby speeding up the flow of goods. The angle adjustment mechanism 200 rotates into an inverted L shape, so that one side of the angle adjustment mechanism 200 is in contact with the ground, which is used for support while increasing the loading area, so that the angle adjustment mechanism 200 can be firmly abutted against the top of the cargo platform, adding additional support points to the entire device, thereby ensuring the stability and safety of the goods during the loading process.

[0036] The angle control mechanism 200 is provided with a fixing mechanism 300. After the angle control mechanism 200 is adjusted, the fixing mechanism 300 can limit the angle control mechanism 200, thereby ensuring the stability of the angle control mechanism 200 after the angle adjustment.

[0037] The existing fixed boarding bridge with adjustable height of the carriage can reduce the space occupied on both sides of the vehicle by flipping the fences on both sides of the boarding bridge when encountering a larger loading and unloading vehicle. Although the use range of the boarding bridge is increased, the goods are easy to fall from both sides of the boarding bridge during loading, and if the flipped fences are not fixed, the movement of the goods during loading is easy to cause the fences to shake or shift, thereby reducing the stability of the entire boarding bridge; therefore, an angle adjustment mechanism 200 is set, and when it is necessary to increase the loading range and the loaded objects are lighter, the angle adjustment mechanism 200 is rotated into an L shape, so as to increase the loading range of the support plate 110. At the same time, the L-shaped angle adjustment mechanism 200 can also protect both sides of the support plate 110, thereby improving the use effect of the device, and after adjusting the angle adjustment mechanism 200, the angle adjustment mechanism 200 is limited by the fixing mechanism 300 to prevent the angle adjustment mechanism 200 from changing position due to vibration, external force impact and other factors during the loading process, thereby ensuring the stability of the device.

[0038] In addition, when the loading range needs to be increased and the load is heavier, the angle adjustment mechanism 200 is rotated into an inverted L shape so that the top of the angle adjustment mechanism 200 is flipped over and abuts against the cargo platform, thereby adding additional support points to the entire device and ensuring the stability and safety of the cargo during the loading process.

[0039] Furthermore, when there is no need to increase the loading range, rotating the angle adjustment mechanism 200 to a vertical straight position can effectively protect both sides of the support plate 110, block the goods, and prevent the goods from accidentally sliding off and causing harm to the staff or goods.

[0040] According to different loading and unloading requirements, the angle control mechanism 200 can be adjusted to different shapes, such as Figure 2 and Figure 4 As shown, the specific structure of the angle adjustment mechanism 200 is further disclosed. The angle adjustment mechanism 200 at least includes a fixed rod 210 rotatably connected to the groove of the support plate 110, and one side of the fixed rod 210 is arranged to penetrate one side of the support plate 110, and a baffle 211 is fixedly connected to the outer wall of the fixed rod 210. Rotating the baffle 211 can drive the fixed rod 210 to rotate. The state of the baffle 211 is changed by rotating the baffle 211. When protection is needed, the baffle 211 is in a vertical state, which can protect both sides of the support plate 110 to prevent the goods from sliding off the support plate 110. When the loading area needs to be increased, the baffle 211 is rotated to be flush with the support plate 110, thereby increasing the loading area of ​​the support plate 110.

[0041] Considering that while increasing the loading range, both sides of the support plate 110 should also be protected, such as Figure 2 and Figure 4 as well as Figure 8-Figure 10 As shown, one side of the baffle 211 is rotatably connected to a rotating rod 212, and the outer wall of the rotating rod 212 is fixedly connected to a connecting rod 213. A plurality of baffles 211 are provided, and one of two adjacent baffles 211 is rotatably connected to the rotating rod 212, and the other baffle 211 is fixedly connected to the connecting rod 213. A plurality of baffles 211 are provided, and a certain baffle 211 can be rotated and adjusted according to the size of the loading range to be increased, so that in some logistics places with limited space, the loading range of the support plate 110 can be increased or reduced by rotating the baffle 211, thereby improving space utilization.

[0042] like Figure 8 As shown, the length of the device foundation for carrying goods is L1. Any baffle 211 can be rotated to be flush with the support plate 110. At this time, the baffle 211 is in a horizontal state, that is, the length L2 is the additional increased load-bearing range.

[0043] When less cargo needs to be loaded and both sides of the workbench need to be strictly protected, the baffle 211 rotates as a whole to the a state to block the cargo and prevent the cargo from accidentally sliding off.

[0044] When the shapes and stacking methods of the goods are more diverse, and a certain guiding effect is required for the goods, the baffle 211 is rotated as a whole to the a1 state to assist in the stacking of the goods. When the baffle 211 is rotated as a whole to a, the space is mainly expanded in a right angle direction to form a relatively regular L-shaped area. When the baffle 211 is rotated to a1, the expanded shape can better adapt to some irregularly shaped goods that are difficult to arrange neatly.

[0045] In order to maximize the area for receiving goods and fully utilize the unfolded area of ​​the baffle 211 to load a large amount of goods, the baffle 211 is rotated as a whole to the a2 state to expand the carrying space.

[0046] When the loaded goods are heavier, the baffle 211 rotates as a whole to the a3 state, so that the baffle 211 originally at the top is rotated to contact with the cargo platform, thereby adding an additional support point for the entire device to ensure the stability and safety of the entire loading and unloading process.

[0047] like Fig. 9 As shown, when the range of loading cargo on the support plate 110 in the horizontal direction needs to be increased and the loaded cargo needs to be protected, the baffle 211 rotates as a whole to the b state, thereby increasing the loading range while protecting both sides of the support plate 110, thereby improving the use effect of the device.

[0048] When the horizontal range of the support plate 110 needs to be increased and the goods are to be guided to be stacked in a wider angle range, the baffle 211 is rotated as a whole to the b1 state for better guiding, gathering and stacking of more goods.

[0049] When the horizontal range of the support plate 110 needs to be increased and the load is heavy, the baffle 211 rotates as a whole to the b2 state. For goods with heavy weight, stable center of gravity and concentrated vertical pressure, the vertical baffle 211 can provide reliable support.

[0050] like Fig.10 As shown, when the horizontal range of the support plate 110 needs to be increased, and the cargo is heavy, irregular in shape, and has an offset center of gravity, the baffle 211 rotates as a whole to the c state; the gravity of the cargo will be decomposed into a force in a direction perpendicular to the baffle 211 and a force in the c direction along the baffle 211. This force decomposition enables the inclined baffle 211 to adapt to forces in different directions to a certain extent, making the baffle 211 more flexible in supporting and protecting the cargo.

[0051] After the baffle 211 rotates, it needs to be fixed. Figure 2 as well as Figure 5-Figure 6 The cam 312 is a substantially parallelogram of the cam 314 and the engagement of the cam 316 with the engagement of the cam 317. The cam 316 is a substantially parallelogram of the cam 314 and the engagement of the cam 317 with the cam 316 is substantially parallelogram of the cam 317.

[0052] When the baffle plate 211 is rotated, the slide bar 311 is manually released, and the slide bar 311 is driven to snap into the adjacent circular hole of the rotating rod 212 under the force of the reset spring 312 to restore the deformation, so as to limit the rotating rod 212. In this way, the rotating rod 212 will not rotate accidentally due to vibration, external force impact and other factors during the loading process. The slide bar 311 passes through the limiting hole of the rotating rod 212, and the part extending to the outside of the rotating rod 212 is relatively long, so as to prevent the rotating rod 212 from falling off the slide bar 311 when the baffle plate 211 shakes, thereby improving the stability of the connection between the slide bar 311 and the rotating rod 212.

[0053] Considering that multiple baffles 211 are provided, each baffle 211 needs to be limited. Figure 2As shown, a total of multiple support plates 310, sliding rods 311 and return springs 312 are provided, and are respectively arranged on one side of an adjacent rotating rod 212, so that each baffle 211 can be individually limited after individual adjustment, thereby enhancing the stability of the connection between each baffle 211. One of the support plates 310, sliding rod 311 and return spring 312 is arranged on one side of the fixed rod 210 that passes through the support plate 110, thereby limiting the fixed rod 210.

[0054] When the plurality of baffles 211 are rotated into an L shape to increase the loading range, in order to increase the supporting force when the baffles 211 are in a horizontal state, as shown in FIG. Figure 4 and Figure 7 As shown, a plurality of fixing plates 130 are fixedly connected to the support plate 110, and a mounting rod 131 is rotatably connected between two adjacent fixing plates 130, and a clamping block 132 is rotatably connected to the side of the mounting rod 131 away from the fixing plate 130. During the process of rotating the baffle 211 for adjustment, the baffle 211 rotates, driving the clamping block 132 to rotate, thereby driving the mounting rod 131 to rotate, so that the mounting rod 131 can support the baffle 211.

[0055] Considering that when the mounting rod 131 supports the baffle 211, the stability of the mounting rod 131 is ensured. Figure 4 and Figure 7 As shown, one side of the plurality of baffles 211 close to the mounting rod 131 is fixedly connected to the limiting block 220, and the limiting block 220 is snap-fitted with the clamping block 132. When the baffle 211 is rotated and the baffle 211 rotates, the clamping block 132 is driven to rotate. Under the limitation of the length of the mounting rod 131, the clamping block 132 is slidably snapped into the adjacent limiting block 220, so that the baffle 211 flush with the support plate 110, the support plate 110 and the mounting rod 131 form a triangle. When the cargo is loaded, the baffle 211 will be subjected to the pressure of the vehicle and the cargo, and the pressure is transmitted to the triangular structure formed between the baffle 211, the support plate 110 and the mounting rod 131, and part of the pressure is dispersed and transmitted through the mounting rod 131, so that the triangular structure formed between the baffle 211, the support plate 110 and the mounting rod 131 can effectively disperse these forces, improve the strength and stability of the entire device, and avoid deformation of the baffle 211 during use.

[0056] Considering the stability of loading and unloading operations on the support plate 110, Figure 2 As shown, a plurality of anti-sliding blocks 111 are fixedly connected to the support plate 110 . The anti-sliding blocks 111 can increase the friction force on the surface of the support plate 110 , and effectively prevent people or goods from slipping on the support plate 110 .

[0057] In order to adjust the height of the support plate 110 according to the height of the truck compartment, as shown in FIG. Figure 3As shown, an electric push rod 120 is rotatably connected to the base 100, and the side of the electric push rod 120 away from the base 100 is rotatably connected to the bottom of the support plate 110. When the electric push rod 120 is started to extend and retract, the support plate 110 is driven to adjust its height, thereby adjusting the height of the support plate 110 according to the height of the truck compartment.

[0058] Working principle: When in use, the electric push rod 120 is started to extend and retract to drive the support plate 110 to adjust the height, so as to adjust the height of the support plate 110 according to the height of the truck compartment. When encountering a larger loading and unloading truck, it is necessary to increase the use range of the support plate 110. By manually pulling the slide bar 311, the slide bar 311 is pulled out from the round hole of the fixed rod 210. At this time, the return spring 312 is deformed by the force. At this time, the slide bar 311 does not limit the fixed rod 210. Then the baffle 211 on the fixed rod 210 is manually rotated to drive the connecting rod 213 rotates, thereby driving the rotating rod 212 to rotate, and the multiple baffles 211 are rotated to the side of the support plate 110, and the baffles 211 are flush with the support plate 110. After the rotation is completed, the sliding rod 311 is manually released, and under the force of the reset spring 312 to restore the deformation, the sliding rod 311 is driven to snap into the adjacent circular hole of the fixed rod 210, so as to limit the fixed rod 210, so that during the loading process, the device will not cause the fixed rod 210 to rotate accidentally due to factors such as vibration and external force impact, thereby ensuring the normal operation of the entire device.

[0059] After the adjustment is completed according to the size of the loading range that you want to increase, and when the loaded items are lighter, then adjust the rotation angle of one of the baffles 211. The same as the operation of adjusting the lowest baffle 211 mentioned above, pull the slide bar 311 out of the rotating rod 212, and then rotate the baffle 211 to a vertical state, so that the multiple baffles 211 are rotated as a whole to state b. The vertical baffles 211 can protect both sides to avoid the risk of cargo sliding to both sides due to improper operation during cargo loading and unloading, so that the vertical baffles 211 can prevent cargo from accidentally falling from both sides.

[0060] Or after adjusting the size of the loading range, and when the load is heavier, multiple baffles 211 are rotated to the overall b2 state, so that the baffle 211 originally at the top contacts the cargo platform, forming a supporting state, so that the baffle 211 can be firmly abutted against the top of the cargo platform, adding additional support points to the entire device, ensuring the stability and safety of the loading process.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fixed boarding bridge with adjustable height according to the height of a carriage, comprising a base (100), a support plate (110) being rotatably connected to the base (100), characterized in that: The support plate (110) is provided with an angle control mechanism (200). The angle control mechanism (200) is manually adjusted to rotate to a vertical state, which can be used for protection. The angle control mechanism (200) is adjusted to an L shape, which can increase the loading area while the angle control mechanism (200) provides protection. The angle control mechanism (200) is rotated to an inverted L shape, so that one side of the angle control mechanism (200) contacts the ground, which can increase the loading area and provide support. The angle control mechanism (200) is provided with a fixing mechanism (300), and after the angle control mechanism (200) has been adjusted, the fixing mechanism (300) can limit the position of the angle control mechanism (200); The angle control mechanism (200) comprises at least a fixed rod (210) rotatably connected to a groove of the support plate (110), and one side of the fixed rod (210) is arranged to penetrate one side of the support plate (110), and a baffle (211) is fixedly connected to the outer wall of the fixed rod (210); one side of the baffle (211) is rotatably connected to a rotating rod (212), and the outer wall of the rotating rod (212) is fixedly connected to a connecting rod (213), and a plurality of baffles (211) are provided, one of two adjacent baffles (211) is rotatably connected to the rotating rod (212), and the other baffle (211) is fixedly connected to the connecting rod (213).

2. The fixed boarding ramp with adjustable height according to the height of the carriage according to claim 1 is characterized in that: The fixing mechanism (300) comprises at least a support plate (310) fixedly connected to a side of the baffle (211) close to the rotating rod (212); a sliding rod (311) is slidably connected to the support plate (310); a plurality of limiting holes are provided on the rotating rod (212); and the size of the limiting holes matches the diameter of the sliding rod (311); a return spring (312) is fixedly connected to the outer wall of the sliding rod (311); and a side of the return spring (312) away from the sliding rod (311) is fixedly connected to the support plate (310).

3. The fixed boarding ramp with adjustable height according to the height of the carriage according to claim 2 is characterized in that: A plurality of the support plates (310), the sliding rods (311) and the return springs (312) are provided, and are respectively provided on one side of adjacent rotating rods (212), wherein one of the support plates (310), the sliding rods (311) and the return springs (312) is provided on one side of the fixed rod (210) passing through the support plate (110).

4. The fixed boarding ramp with adjustable height according to the height of the carriage according to claim 1 is characterized in that: A plurality of fixing plates (130) are fixedly connected to the support plate (110), and a mounting rod (131) is rotatably connected between two adjacent fixing plates (130), and a clamping block (132) is rotatably connected to the side of the fixing rod (131) away from the fixing plate (130).

5. The fixed boarding ramp with adjustable height according to the height of the carriage according to claim 4 is characterized in that: The plurality of baffles (211) are fixedly connected to a limiting block (220) on one side close to the mounting rod (131), and the limiting block (220) is snap-fitted with the clamping block (132).

6. The fixed boarding ramp with adjustable height according to the height of the carriage according to claim 1 is characterized in that: A plurality of anti-sliding blocks (111) are fixedly connected to the support plate (110).

7. The fixed boarding ramp with adjustable height according to the height of the carriage according to claim 1 is characterized in that: An electric push rod (120) is rotatably connected to the base (100), and a side of the electric push rod (120) away from the base (100) is rotatably connected to the bottom of the support plate (110).

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