An adjustable ramp

Abstract

The utility model discloses an adjustable ramp, including the fixed frame, this fixed frame is fixed on the ground, and the fixed plate of incline is fixed on the upper surface of one side of this fixed frame, and the lowest height side of this fixed plate is contacted with the ground, the movable frame is rotatably connected with the fixed frame on one side, and the connecting place of movable frame and fixed frame is on the side of fixed plate away from the ground, and the movable plate is fixed on movable frame, and there is gap between movable plate and fixed plate. The utility model discloses by rotating and adjusting the inclination angle of movable frame, and then changes the inclination angle of movable plate, realizes the flexible adaptation to different height steps, improves the versatility and the scope of application of ramp, reduces the idle, abandoned situation of ramp in prior art because of height mismatch, improves the reuse rate of ramp, reduces the waste of building materials such as steel, board, the whole structure is simple, and the adjustment process does not need complicated tool.

Description

Technical Field

[0001] This utility model relates to the field of on-site ramp technology, and in particular to an adjustable ramp. Background Technology

[0002] Currently, the industry commonly uses fixed-height modular ramps or steel-framed ramps to address height difference adaptation needs. These ramps are typically prefabricated or on-site erected to accommodate fixed step heights for specific scenarios, and can only accommodate steps of a single fixed height. However, in actual engineering construction, logistics transportation, and public facility operation and maintenance, step heights are not fixed and are affected by factors such as changes in construction stages, differences in the destination of transported goods, and adjustments to public facilities.

[0003] When the height of the steps on site changes, existing fixed-height ramps or steel-framed ramps, due to their non-adjustable height, cannot meet the new height difference requirements. In such cases, it is necessary to redesign and fabricate new ramps according to the new step height, or dismantle and rebuild the existing steel-framed ramps. This approach results in the original ramps becoming unusable and thus idle or abandoned, causing significant waste of building materials such as steel and sheet metal, increasing project and operating costs, and consuming substantial manpower and time. Utility Model Content

[0004] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides an adjustable ramp, comprising: A fixed frame is fixed to the ground, and an inclined fixing plate is fixed to the upper surface of one side of the fixed frame, with the lowest side of the fixing plate in contact with the ground; A movable frame is rotatably connected to a fixed frame on one side. The connection between the movable frame and the fixed frame is on the side of the fixed plate away from the ground. A movable plate is fixed on the movable frame, and there is a gap between the movable plate and the fixed plate.

[0005] This invention allows for flexible adaptation to steps of different heights by rotating and adjusting the tilt angle of the movable frame, thereby changing the tilt angle of the movable plate. This improves the versatility and applicability of ramps, reduces the situation where ramps are left idle or abandoned due to height mismatch in the prior art, increases the reuse rate of ramps, reduces the waste of building materials such as steel and plates, and has a simple overall structure with no complicated tools required for adjustment.

[0006] Furthermore, an insertion hole is provided on one side of the movable frame, and a pivot shaft is provided on the fixed frame corresponding to the insertion hole, the pivot shaft matching the insertion hole.

[0007] Furthermore, a threaded hole is provided at one end of the pivot shaft, and the adjustable ramp also includes a limiting bolt that matches the threaded hole.

[0008] The radial displacement of the movable frame can be limited by the limit bolts to prevent the movable frame from becoming loose during adjustment.

[0009] Furthermore, the adjustable ramp also includes: The fastener is fixed to the bottom of the mounting bracket; An expansion bolt, which passes through the fastener from top to bottom and is inserted into the ground.

[0010] The strong anchoring force formed by the mechanical engagement of bolts with the ground can effectively reduce the horizontal displacement or vertical lifting of the fixing frame due to external forces during use, thus improving the structural reliability of the ramp.

[0011] Furthermore, an arc-shaped rod is fixed to the upper surface of the fixing frame; An arc-shaped sleeve is provided on the lower surface of the movable frame corresponding to the arc-shaped rod, and the arc-shaped sleeve is fitted onto the outside of the arc-shaped rod; The centers of the arc-shaped rod and the arc-shaped sleeve are both coincident with the pivot axes of the movable frame and the fixed frame, and the curvature of both matches the movement trajectory of the arc-shaped sleeve mounting point on the movable frame.

[0012] By cooperating with the arc-shaped rod and the arc-shaped sleeve rod, when the movable frame rotates, the arc-shaped sleeve rod will slide along the arc-shaped rod, which can guide the rotation of the movable frame.

[0013] Furthermore, a first positioning hole is provided on the side of the arc-shaped sleeve rod, and the first positioning hole is arranged at equal intervals along the axial direction of the arc-shaped sleeve rod. A second positioning hole is provided on the side of the arc-shaped rod corresponding to the first positioning hole; The adjustable ramp also includes a positioning pin, which is inserted into the aligned first positioning hole and second positioning hole.

[0014] The ramp can be quickly adjusted to the preset height by aligning the positioning holes at different positions.

[0015] Furthermore, the gap between the fixed plate and the movable plate is filled with rubber strips.

[0016] By leaving gaps, sufficient expansion and contraction space is provided for the fixed and movable plates to accommodate thermal expansion and contraction. The rubber strips, through their own elasticity, adaptively fill these gaps. At high temperatures, the rubber strips are compressed and contracted, without hindering the expansion of the steel plate; at low temperatures, the rubber strips rebound, preventing the gaps from becoming too large and affecting passage. Secondly, the rubber strips within the gaps are elastic. When a wheel runs over them, the rubber strips compress and buffer, reducing the impact force transmitted from the steel plate to the structure below; after the wheel leaves, the rubber strips rebound and return to their original position, avoiding hard collisions. This reduces the wear rate of the arc-shaped guide structure and the positioning hole locking structure, thus reducing maintenance frequency.

[0017] Furthermore, an overlapping section is provided on the side of the movable frame away from the fixed plate.

[0018] The overlap section compensates for the horizontal distance offset caused by the arc movement at the end of the movable frame, so that the top of the ramp can be aligned with the target position.

[0019] This utility model has the following advantages: This invention allows for flexible adaptation to steps of different heights by rotating and adjusting the tilt angle of the movable frame, thereby changing the tilt angle of the movable plate. This improves the versatility and applicability of ramps, reduces the situation where ramps are left idle or abandoned due to height mismatch in the prior art, increases the reuse rate of ramps, reduces the waste of building materials such as steel and plates, and has a simple overall structure with no complicated tools required for adjustment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the adjustable ramp structure; Figure 2 yes Figure 1 A side view of the adjustable ramp shown. Figure 3 yes Figure 1 The diagram shows the connection between the fixed frame and the movable frame in the adjustable ramp. Figure 4 yes Figure 2 The diagram shows the connection between the arc-shaped rod and the arc-shaped sleeve rod in the adjustable ramp. In the picture: 1. Fixed frame; 2. Fixed plate; 3. Rubber strip; 4. Movable plate; 5. Movable frame; 5A. Overlapping part; 6. Arc-shaped sleeve rod; 6A. First positioning hole; 7. Arc-shaped rod; 7A. Second positioning hole; 8. Insertion hole; 9. Pivot shaft; 10. Fixing component; 11. Expansion bolt; 12. Positioning pin. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0022] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0023] As described in the background section, when the height of the steps on site changes, existing fixed-height tool-type ramps or steel-framed ramps, due to their non-adjustable height, cannot meet the new height difference adaptation requirements. In such cases, it is necessary to redesign and manufacture new ramps according to the new step height, or dismantle and rebuild the existing steel-framed ramps. This approach results in the original ramps becoming unusable and thus idle or abandoned, causing a serious waste of building materials such as steel and sheet metal, increasing project and operating costs, and also requiring significant manpower and time costs.

[0024] Example 1: Therefore, in order to solve the above-mentioned technical problems existing in the prior art, this embodiment provides an adjustable ramp, such as... Figure 1 As shown, the adjustable ramp includes: A fixed frame 1 is fixed to the ground, and an inclined fixed plate 2 is fixed to the upper surface of one side of the fixed frame, with the lowest side of the fixed plate in contact with the ground; The movable frame 5 is rotatably connected to the fixed frame on one side. The connection between the movable frame and the fixed frame is on the side of the fixed plate away from the ground. A movable plate 4 is fixed on the movable frame, and there is a gap between the movable plate and the fixed plate.

[0025] Specifically, based on the location of the target step, determine the placement area for the fixing frame—ensuring that one side of the fixing frame (the side that will later connect to the movable frame) faces the step, and the other side is close to the unobstructed ground (to facilitate contact between the fixing plate and the ground); place the fixing frame in the selected position, ensuring that its bottom is in contact with the ground without wobbling (for long-term use, stability can be enhanced by weighing it down or simple anchoring; if it is to be placed directly against a concrete surface, it can meet the basic fixing requirements). Then, the operator pushes the end of the movable frame away from the fixing plate, causing the movable frame to rotate around the connection between the fixing frame and the movable frame, adjusting the tilt angle; continue rotating the movable frame until the end of the movable plate fixed on the movable frame away from the ground aligns with the upper surface of the target step, then fix it. When the height of the step changes (e.g., the step height increases to 25cm due to construction progress, the logistics destination changes and needs to be adapted to a 30cm high truck bed, or the step height decreases to 10cm after public facility renovation), the operator loosens the fixing parts (e.g., locking bolts) and pushes the end of the movable frame away from the step; adjust the rotation angle of the movable frame according to the new step height. If the step height increases (e.g., from 15cm...), If the height of the step is increased to 25cm, the tilt angle of the movable frame is increased, raising the end of the movable plate away from the ground and overlapping the new step; if the step height is reduced (e.g., from 20cm to 10cm), the tilt angle of the movable frame is reduced, lowering the end of the movable plate to fit the new step. Furthermore, the fixed plate and movable plate can be fixed to the fixed frame and movable frame respectively by welding, riveting, or other methods.

[0026] This embodiment adjusts the tilt angle of the movable frame by rotating it, thereby changing the tilt angle of the movable plate. This allows for flexible adaptation to steps of different heights, improving the versatility and applicability of the ramp. It also reduces the situation where ramps are left idle or abandoned due to height mismatches in existing technologies, increases the reuse rate of the ramp, and reduces the waste of building materials such as steel and plates. The overall structure is simple, and the adjustment process does not require complicated tools.

[0027] For example, such as Figure 3 As shown, a socket 8 may be provided on one side of the movable frame, and a pivot shaft 9 is provided on the fixed frame corresponding to the socket, the pivot shaft being matched with the socket.

[0028] For example, a threaded hole may also be provided at one end of the pivot shaft, and the adjustable ramp may also include a limiting bolt that matches the threaded hole.

[0029] When the insertion hole mates with the pivot shaft, the limiting bolt is screwed into the threaded hole. The head of the limiting bolt restricts the lateral movement of the movable frame. The limiting bolt also restricts the radial displacement of the movable frame, preventing it from becoming loose during adjustment.

[0030] like Figure 3 As shown, the adjustable ramp also includes: Fastener 10, which is fixed to the bottom of the mounting bracket; Expansion bolt 11, which passes through the fastener from top to bottom and is inserted into the ground.

[0031] The strong anchoring force formed by the mechanical engagement of bolts with the ground can effectively reduce the horizontal displacement or vertical lifting of the fixed frame due to external forces (such as heavy equipment crushing, cargo cart impact, and personnel stepping on it) during use, thus improving the structural reliability of the ramp.

[0032] like Figure 2 As shown, an arc-shaped rod 7 is fixed on the upper surface of the fixing frame; An arc-shaped sleeve 6 is provided on the lower surface of the movable frame corresponding to the arc-shaped rod, and the arc-shaped sleeve is fitted onto the outside of the arc-shaped rod; The centers of the arc-shaped rod and the arc-shaped sleeve are both coincident with the pivot axes of the movable frame and the fixed frame, and the curvature of both matches the movement trajectory of the arc-shaped sleeve mounting point on the movable frame.

[0033] By cooperating with the arc-shaped rod and the arc-shaped sleeve rod, when the movable frame rotates, the arc-shaped sleeve rod will slide along the arc-shaped rod, which can guide the rotation of the movable frame.

[0034] like Figure 4 As shown, a first positioning hole 6A is provided on the side of the arc-shaped sleeve rod, and the first positioning holes are arranged at equal intervals along the axial direction of the arc-shaped sleeve rod. A second positioning hole 7A is provided on the side of the arc-shaped rod corresponding to the first positioning hole; The adjustable ramp also includes a positioning pin 12, which is inserted into the aligned first positioning hole and second positioning hole.

[0035] The ramp can be quickly adjusted to the preset height by aligning the positioning holes at different positions.

[0036] Specifically, the operator pushes the end of the movable frame away from the fixed plate, causing the movable frame to rotate around the pivot axis. At this time, the arc-shaped sleeve on the lower surface of the movable frame will slide along the outer side of the arc-shaped rod on the fixed frame. During the sliding of the arc-shaped sleeve along the arc-shaped rod, the height change of the movable plate on the movable frame is observed simultaneously. When the end of the movable plate away from the ground approaches the target step height (such as a logistics unloading platform with a height of 20cm), the pushing speed is slowed down until the center of the first positioning hole and the second positioning hole are observed to coincide from the side. The positioning pin is then held and inserted from the outside of the aligned positioning hole to fix the rotation angle of the movable frame and achieve height locking. like Figure 1 As shown, the gap between the fixed plate and the movable plate is filled with rubber strips 3.

[0037] By leaving gaps, sufficient expansion and contraction space is provided for the fixed and movable plates to accommodate thermal expansion and contraction. The rubber strips, through their own elasticity, adaptively fill these gaps. At high temperatures, the rubber strips are compressed and contracted, without hindering the expansion of the steel plate; at low temperatures, the rubber strips rebound, preventing the gaps from becoming too large and affecting passage. Secondly, the rubber strips within the gaps are elastic. When a wheel runs over them, the rubber strips compress and buffer, reducing the impact force transmitted from the steel plate to the structure below; after the wheel leaves, the rubber strips rebound and return to their original position, avoiding hard collisions. This reduces the wear rate of the arc-shaped guide structure and the positioning hole locking structure, thus reducing maintenance frequency.

[0038] like Figure 1 As shown, an overlap portion 5A is provided on the side of the movable frame away from the fixed plate.

[0039] The overlap section compensates for the horizontal distance offset caused by the arc movement at the end of the movable frame, so that the top of the ramp can be aligned with the target position.

[0040] When the height of the movable plate is close to the target position, slow down the pushing speed and gently push the movable frame so that the end of the overlapping part contacts the target position surface (such as the upper surface of the step, the side of the step, etc.). Keep the movable frame still, observe and fine-tune to make the first positioning hole and the second positioning hole completely aligned (can be judged by visually aligning the center of the hole). Insert the positioning pin until the pin head fits against the outer wall of the arc-shaped sleeve rod. Gently push the movable frame to confirm that there is no rotation, and complete the precise height locking (such as locking the hole position corresponding to a height of 20cm).

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable ramp, characterized in that, include: A fixed frame is fixed to the ground, and an inclined fixing plate is fixed to the upper surface of one side of the fixed frame, with the lowest side of the fixing plate in contact with the ground; A movable frame is rotatably connected to a fixed frame on one side. The connection between the movable frame and the fixed frame is on the side of the fixed plate away from the ground. A movable plate is fixed on the movable frame, and there is a gap between the movable plate and the fixed plate.

2. An adjustable ramp according to claim 1, characterized in that, A socket is provided on one side of the movable frame, and a pivot shaft is provided on the fixed frame corresponding to the socket, the pivot shaft matching the socket.

3. An adjustable ramp according to claim 2, characterized in that, A threaded hole is provided at one end of the pivot shaft, and the adjustable ramp also includes a limiting bolt that matches the threaded hole.

4. An adjustable ramp according to claim 1, characterized in that, The adjustable ramp also includes: The fastener is fixed to the bottom of the mounting bracket; An expansion bolt, which passes through the fastener from top to bottom and is inserted into the ground.

5. An adjustable ramp according to claim 1, characterized in that, An arc-shaped rod is fixed to the upper surface of the fixing frame; An arc-shaped sleeve is provided on the lower surface of the movable frame corresponding to the arc-shaped rod, and the arc-shaped sleeve is fitted onto the outside of the arc-shaped rod; The centers of the arc-shaped rod and the arc-shaped sleeve are both coincident with the pivot axes of the movable frame and the fixed frame, and the curvature of both matches the movement trajectory of the arc-shaped sleeve mounting point on the movable frame.

6. An adjustable ramp according to claim 5, characterized in that, A first positioning hole is provided on the side of the arc-shaped sleeve rod, and the first positioning hole is equidistantly arranged along the axis of the arc-shaped sleeve rod. A second positioning hole is provided on the side of the arc-shaped rod corresponding to the first positioning hole; The adjustable ramp also includes a positioning pin, which is inserted into the aligned first positioning hole and second positioning hole.

7. An adjustable ramp according to claim 1, characterized in that, The gap between the fixed plate and the movable plate is filled with rubber strips.

8. An adjustable ramp according to claim 1, characterized in that, An overlap is provided on the side of the movable frame away from the fixed plate.

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