Wheel chock

Abstract

The application provides a wheel retainer, which belongs to the technical field of professional tools and is composed of a steel structure retainer, a displacement sensor, a pressure sensor and an alarm.The application adopts a bottom plate amplification design to increase the contact area with the ground; a rivet is used to connect a sawtooth-shaped high-strength rubber pad to increase the friction coefficient; a pressure sensor is arranged at the contact surface of the retainer and the wheel; a displacement sensor is arranged at the tail of the retainer; the pressure sensor and the displacement sensor are connected with the alarm respectively; when the pressure increases to the set value, a signal is sent to the alarm to make the alarm work; the application uses the characteristics of high strength of the profile steel and large friction coefficient of the rubber to ingeniously solve the problems of stopping and retreating of large slope positions and large load vehicles; the high-precision and high-sensitivity sensor and the alarm are combined to have the alarm function, remind the driver and pedestrians to take emergency measures under extreme conditions, and maximize the probability of reducing the danger and the loss when the danger occurs.

Description

Technical Field

[0001] This invention relates to the field of professional tools technology, specifically to a wheel roll-off stopper. Background Technology

[0002] In urban construction and renovation projects, large heavy-duty vehicles (such as concrete mixer trucks and freight trucks) often need to be parked and operated on slopes. These vehicles, when fully loaded, can weigh 50-60 tons. If parked on steep slopes (such as at an angle of 35°-40°), they are highly susceptible to rollover accidents due to mechanical failure or operational errors. This is especially true in older urban areas like Yuzhong District in Chongqing, where the terrain is rugged and roads are narrow. These work sites are often adjacent to schools, kindergartens, and brick-and-mortar residential buildings, and the risk of accidents increases dramatically during peak pedestrian traffic. Loss of control could lead to catastrophic consequences.

[0003] Current conventional anti-rollover devices, such as wooden triangular blocks or plastic anti-rollover devices, have significant defects. For example, traditional materials are difficult to withstand the huge impact force of heavy vehicles on extreme slopes, and are prone to structural deformation or breakage. Existing anti-rollover devices have a low surface friction coefficient, and are prone to relative slippage with the tires under wet or steep conditions. They also lack real-time status monitoring functions and cannot trigger alarms in the initial stage of rollover, thus delaying emergency response.

[0004] Therefore, there is an urgent need to develop an intelligent braking device that combines high structural strength, ultra-high frictional resistance, and real-time early warning functions to meet the safe parking requirements of heavy vehicles in complex urban scenarios. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing technologies by providing a wheel roll-back device, consisting of a steel structure wheel stopper, a displacement sensor, a pressure sensor, and an alarm assembly. Utilizing the high strength of the steel and the high coefficient of friction of rubber, it cleverly solves the problem of preventing large, heavy-duty vehicles from rolling back on steep inclines. Combined with a high-precision, high-sensitivity sensor and alarm, it provides an alarm function that can alert drivers and pedestrians to take emergency evasive action under extreme conditions, minimizing the probability of danger and reducing losses in the event of an accident.

[0006] Technical Solution: The present invention discloses a wheel rollover arrester, comprising a grid-shaped steel structure main body, a friction enhancement component, a dual-sensor alarm unit, and a detachable operating mechanism. The grid-shaped steel structure main body includes a base plate, on which three keel steel plates are equidistantly arranged in the axial direction. Several triangular steel plates of varying heights are arranged in the vertical direction of the keel steel plates, with the height of the triangular steel plates decreasing from the center to both sides. The top surface of the triangular steel plates is welded to extend from the center to both sides to form two pressure-bearing surfaces, including a contact surface that contacts the tire and a support surface that provides support. The contact surface is curved. The friction enhancement component is fixed to the bottom of the base plate. The dual-sensor alarm unit includes a pressure sensor located on the contact surface between the arrester and the tire, a displacement sensor located at the tail of the arrester, and an alarm connected to the pressure sensor and the displacement sensor by signal or electrical connection, respectively. The detachable operating mechanism consists of detachable rigid handles located on both sides of the arrester. The detachable handles allow for safe distance operation, avoiding the risk of accidental vehicle movement during manual placement.

[0007] The pressure sensor is configured to trigger an alarm when the detected pressure value exceeds a set threshold, and the displacement sensor is configured to trigger an alarm when the displacement of the resistor is sensed. The dual-sensor redundancy design improves the accuracy of identifying the risk of runaway vehicles.

[0008] Furthermore, the three keel steel plates are connected by connecting steel plates.

[0009] Furthermore, the triangular steel plate includes two first triangular steel plates arranged side by side in the middle of the keel steel plate, the height of the first triangular steel plate being 197mm; below the contact surface, there are also two second triangular steel plates and two third triangular steel plates, the height of the second triangular steel plates being 93mm and the height of the third triangular steel plates being 32mm; below the support surface, there are also two fourth triangular steel plates and two fifth triangular steel plates, the height of the fourth triangular steel plates being 132mm and the height of the fifth triangular steel plates being 68mm.

[0010] The first triangular steel plate, 197mm high, is located in the middle and directly resists the maximum ground pressure of the tires. The second triangular steel plate, 93mm high, and the third triangular steel plate, 32mm high, form a gradient support below the contact surface. The fourth triangular steel plate, 132mm high, and the fifth triangular steel plate, 68mm high, form an anti-overturning base below the support surface, improving the pressure gradient transmission efficiency and avoiding stress concentration. At the same time, the low-height triangular steel plates increase the shear resistance of the edge area and prevent slope slippage.

[0011] Furthermore, the friction enhancement component is a serrated rubber pad that is fixed to the bottom of the base plate by rivets, and the serrated rubber pad is connected to the base plate by rivets.

[0012] Furthermore, the bottom surface of the serrated rubber pad is roughened, which increases the microscopic engagement with the ground.

[0013] Furthermore, the radius of curvature of the surface is 600mm, which matches the crown curvature of a standard engineering vehicle tire of R650±50mm.

[0014] Furthermore, the base plate is made of 10mm thick steel plate with dimensions of 300mm*600mm*10mm, providing bending stiffness and matching the ground contact width of the dual tires to prevent sensor false triggering due to deformation.

[0015] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows:

[0016] (1) The grid-shaped main structure designed in this invention bears the vertical load through the bottom plate, the three keel steel plates form the main support axis, the triangular steel plates with gradually changing height form the double bearing surface, and the curved surface design of the contact surface decomposes the tire pressure along the normal of the curved surface, reducing the horizontal sliding component force;

[0017] (2) The dual-sensor alarm unit designed in this invention monitors the compressive stress of the tire on the contact surface in real time through the pressure sensor and detects the relative displacement between the tail of the retractor and the ground through the displacement sensor. When the pressure exceeds the threshold or the displacement is greater than 3 mm, an audible and visual alarm is triggered. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the planar structure of the present invention;

[0019] Figure 2 This is a front view of the present invention. Detailed Implementation

[0020] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments described.

[0021] like Figures 1-2 The wheel rollover device shown includes a grid-like steel structure main body, a friction enhancement component, a dual-sensor alarm unit, and a detachable operating mechanism. The grid-like steel structure main body includes a base plate 1, made of Q235 steel plate, measuring 300mm × 600mm × 10mm, with six Ø10mm rivet holes drilled on its surface (2×3 array). Three 10mm thick steel rib plates 2 are evenly spaced along the axial direction of the base plate 1, welded to its surface at 200mm intervals, with each end 100mm from the edge. The friction enhancement component is a serrated rubber pad 7 fixed to the bottom of the base plate 1 by rivets; the bottom surface of the serrated rubber pad 701 is roughened 701.

[0022] Several triangular steel plates 3 of varying heights are arranged vertically on the keel steel plate 2. The height of the triangular steel plates 2 gradually decreases from the middle to both sides. The top surface of the triangular steel plates 2 is welded to extend from the middle to both sides to form two pressure-bearing surfaces. The pressure-bearing surfaces include a contact surface 4 that contacts the tire and a support surface 5 that provides support. The contact surface 4 is a curved surface with a radius of curvature of 600mm. The friction enhancement component is fixed to the bottom of the base plate 1. The dual sensor alarm unit includes a pressure sensor located on the contact surface between the tire arrester and the tire, a displacement sensor located at the tail of the tire arrester, and an alarm that is connected to the pressure sensor and the displacement sensor by signal or electrical connection, respectively. The detachable operating mechanism is a detachable rigid handle located on both sides of the tire arrester. The detachable rigid handle is a Ø25mm hollow steel rod with M10 threads machined at both ends and fixed by bolts through the engagement holes (Ø11mm / 20mm spacing) of the middle triangular steel plate 301.

[0023] The three keel steel plates 2 are connected by connecting steel plates 6 and are welded sideways between adjacent keel plates (the weld conforms to GB50661-2011 Class I standard). The triangular steel plates 3 include two first triangular steel plates 301 arranged side by side in the middle of the keel steel plates 2, with a height of 197mm; below the contact surface 4, there are also two second triangular steel plates 302 and two third triangular steel plates 303, with a height of 93mm for the second triangular steel plates 302 and a height of 32mm for the third triangular steel plates 303; below the support surface 5, there are also two fourth triangular steel plates 304 and two fifth triangular steel plates 305. 05. The height of the fourth triangular steel plate 304 is 132mm, and the height of the fifth triangular steel plate is 30568mm. The first group (301): 197mm high × 50mm wide × 10mm thick, the centrally welded main pressure-bearing area; the second group 302: 93mm high × 50mm wide × 5mm thick, the contact surface transition area; the third group 303: 32mm high × 50mm wide × 10mm thick, the contact surface edge shear resistance area; the fourth group 304: 132mm high × 50mm wide × 5mm thick, the support surface anti-overturning area; the fifth group 305: 68mm high × 50mm wide × 10mm thick, the support surface edge reinforcement area.

[0024] In this embodiment, the selection of pressure sensor 7, displacement sensor 9, and audible and visual alarm 8 includes, but is not limited to, the following table, as long as the required functions are met.

[0025]

[0026] Working principle:

[0027] Step 1: Activate parking protection

[0028] The operator pushes the anti-reverse device from the side of the vehicle into front of the tire, and the serrated rubber pad 201 engages with the ground. When the tire presses on the contact surface 4: the pressure sensor monitors the load in real time, and when the value is ≥55 tons (110% of the self-weight of a fully loaded tanker truck), it is judged as a risky state; the curved contact design (R=600mm) makes the tire pressure evenly distributed to the 5 sets of triangular steel plates to avoid local overpressure.

[0029] Step 2: Dual Risk Monitoring

[0030] Initial stage of vehicle slippage: If the vehicle slides downhill, the displacement sensor detects that the rear of the resistor has moved more than 3mm → triggering a first-level audible and visual alarm; extreme conditions: If the slope is slippery and the rubber pad slips, the pressure sensor detects a sudden pressure drop of more than 20% → simultaneously triggering a second-level emergency alarm.

[0031] Step 3: Emergency Evacuation Response

[0032] The alarm emits a 120dB buzzer and a red strobe light, simultaneously sending an alert to the driver's mobile phone via a wireless module (optional NB-IoT). Personnel have a 5-second golden window to act: Drivers: immediately brake and boost engine speed; Pedestrians: evacuate in the opposite direction of the alarm's sound and light.

[0033] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A wheel roll-off arrestor, characterized in that: It includes a grid-like steel structure main body, friction enhancement components, dual sensor alarm unit, and detachable operating mechanism; The main body of the grid-shaped steel structure includes a base plate (1), three keel steel plates (2) are equidistantly arranged in the axial direction of the base plate (1), and several triangular steel plates (3) of different heights are arranged in the vertical direction of the keel steel plates (2). The height of the triangular steel plates (3) tends to decrease from the middle to both sides. The top surface of the triangular steel plates (3) is welded to extend from the middle to both sides to form two pressure-bearing surfaces. The pressure-bearing surfaces include a contact surface (4) that contacts the tire and a support surface (5) that provides support. The contact surface (4) is curved. The friction enhancement component is fixed to the bottom of the base plate (1). The dual sensor alarm unit includes a pressure sensor located on the contact surface between the tire and the anti-rollover device, a displacement sensor located at the tail of the anti-rollover device, and an alarm that is signal- or electrically connected to the pressure sensor and the displacement sensor respectively. The detachable operating mechanism is a detachable rigid handle located on both sides of the anti-rollover device. The pressure sensor is configured to trigger an alarm when it detects that the pressure value exceeds a set threshold, and the displacement sensor is configured to trigger an alarm when it senses the displacement of the retractor.

2. The wheel braking device according to claim 1, characterized in that: The three keel steel plates (2) are connected by connecting steel plates (6).

3. A wheel braking device according to claim 1, characterized in that: The triangular steel plate (3) includes two first triangular steel plates (301) arranged side by side in the middle of the keel steel plate (2), the height of the first triangular steel plate (301) is 197mm; below the contact surface (4) there are also two second triangular steel plates (302) and two third triangular steel plates (303), the height of the second triangular steel plate (302) is 93mm, the height of the third triangular steel plate (303) is 32mm; below the support surface (5) there are also two fourth triangular steel plates (304) and two fifth triangular steel plates (305), the height of the fourth triangular steel plate (304) is 132mm, and the height of the fifth triangular steel plate (305) is 68mm.

4. A wheel braking device according to claim 1, characterized in that: The friction enhancement component is a serrated rubber pad (7) that is fixed to the bottom of the base plate (1) by rivets.

5. A wheel braking device according to claim 4, characterized in that: The bottom surface of the serrated rubber pad (7) is roughened (701).

6. A wheel braking device according to claim 1, characterized in that: The radius of curvature of the surface is 600 mm.

7. A wheel braking device according to claim 1, characterized in that: The base plate (1) is made of 10mm thick steel plate, and the dimensions of the base plate (1) are 300mm*600mm*10mm.

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