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CN-121989791-A - Loading device of dangerous goods logistics transportation carriage

CN121989791ACN 121989791 ACN121989791 ACN 121989791ACN-121989791-A

Abstract

The invention belongs to the technical field of dangerous goods transportation and discloses a loading device of a dangerous goods logistics transportation carriage, which comprises a bottom plate fixed at the bottom of the carriage and a tray arranged above the bottom plate in a floating manner, wherein a spring damping device for providing elastic support and damping buffering is arranged between the bottom plate and the tray. The invention realizes the effect of self-adaptive lateral clamping by utilizing gravity and jolt energy through the mechanical linkage of the driving component and the self-limiting component, converts the vertical displacement of the pallet after being pressed into the lateral thrust through the connecting rod, and further drives the lateral pressing rod to fold inwards, the design ensures that the more jolt the road surface and the more the load is pressed down, the stronger the lateral clamping force generated by the device is, the dynamic self-locking mechanism is formed, the problem that the traditional static fixing mode is easy to loosen in the process of transporting jolting is effectively solved, and the absolute stability of the goods in the left-right direction can be ensured under severe road conditions.

Inventors

  • HE WEN
  • WU BIN
  • WANG PING
  • CHEN BIN

Assignees

  • 新疆天河运输有限公司

Dates

Publication Date
20260508
Application Date
20260122

Claims (10)

  1. 1. The loading device of the dangerous goods logistics transportation carriage comprises a bottom plate (1) fixed at the bottom of the carriage and a tray (2) arranged above the bottom plate (1) in a floating mode, and is characterized in that a spring damping device (3) for providing elastic support and damping buffering is arranged between the bottom plate (1) and the tray (2); The device also comprises a driving component (4) which is arranged at the bottom of the tray (2) in a linkage way and self-limiting components (13) which are symmetrically arranged at two sides of the tray (2); The driving assembly (4) is configured as a displacement conversion mechanism and is configured to convert vertical settlement displacement of the tray (2) relative to the bottom plate (1) into outward thrust displacement along the horizontal direction when the vertical settlement displacement is generated under load; the self-limiting assembly (13) is in transmission fit with the driving assembly (4) and is configured to receive the outward thrust displacement in the horizontal direction output by the driving assembly (4), and convert the outward thrust displacement into lateral clamping actions towards the center of the tray (2) by utilizing the lever principle, so that the self-adaptive locking of goods by utilizing the gravity and jolt energy of the goods is realized.
  2. 2. The loading device of the dangerous goods logistics transportation carriage according to claim 1, wherein the driving assembly (4) comprises a transmission rod (401) fixedly connected to the bottom end of the tray (2), a longitudinal clamping block (403) which vertically ascends and descends along with the tray (2) is connected to the transmission rod (401), a longitudinal guide rail (5) for limiting horizontal displacement is fixedly arranged on the bottom plate (1), and the longitudinal clamping block (403) is slidingly restrained in the longitudinal guide rail (5); The driving assembly (4) further comprises a transverse clamping block (407) which can only move along the horizontal direction and an inclined connecting rod (406) hinged between the longitudinal clamping block (403) and the transverse clamping block (407); A transverse guide rail (6) is arranged on the bottom plate (1), and the transverse clamping block (407) is slidingly restrained in the transverse guide rail (6); An initial included angle is formed between the inclined connecting rod (406) and the vertical direction, and the inclined connecting rod is used for pushing the transverse clamping block (407) to slide outwards when the longitudinal clamping block (403) descends.
  3. 3. The loading device of the dangerous goods logistics transportation carriage according to claim 2, wherein the self-limiting assembly (13) comprises a lever (132) hinged to the side edge of the tray (2), a lateral pressurizing rod (134) for clamping goods is arranged at the upper end of the lever (132), and a pressure bearing part is arranged at the lower end of the lever; The driving assembly (4) further comprises a collision force application part connected to the extending end of the transverse clamping block (407), a non-fixed collision transmission fit is formed between the collision force application part and the pressure bearing force part, and when the transverse clamping block (407) slides outwards, the collision force application part pushes the pressure bearing force part outwards to drive the lever (132) to rotate so that the lateral pressure applying rod (134) is retracted.
  4. 4. The loading device for the dangerous cargo transportation carriage according to claim 3, wherein the abutting force applying portion is an abutting ball (409) arranged at the tail end of the extension rod (408), and the bearing force receiving portion is a bearing ball (133) arranged at the bottom end of the lever (132); The abutting ball (409) and the bearing ball (133) are of hard sphere structures, a point contact high-pair transmission pair adapting to the angle deflection of the lever (132) is formed between the abutting ball and the bearing ball, and a solid lubrication layer is coated on the surface of the bearing ball (133).
  5. 5. The loading device of a hazardous materials logistics transport cart of claim 1, further comprising a self-clamping assembly (14) for limiting longitudinal displacement of the cargo and a hydraulic drive system; The hydraulic driving system comprises an oil storage pipe (8) arranged between the bottom plate (1) and the driving assembly (4) and a temporary storage pipe (141) arranged on the self-clamping assembly (14), wherein the oil storage pipe (8) and the temporary storage pipe (141) are communicated through an oil pipeline to form a hydraulic circuit; An oil discharge piston structure driven by the downward pressing of the tray (2) is arranged in the oil storage pipe (8), an execution piston structure driven by hydraulic pressure is arranged in the temporary storage pipe (141), and the oil discharge piston structure is configured to press hydraulic oil into the temporary storage pipe (141) when the tray (2) is settled, so that the execution piston structure is driven to act.
  6. 6. The loading device of the dangerous goods logistics transportation carriage according to claim 5, wherein the cross-sectional area of the inner cavity of the oil storage pipe (8) is larger than that of the temporary storage pipe (141), so as to form a hydraulic differential speed increasing loop, and the extending speed of the executing piston structure is larger than the sedimentation speed of the tray (2); the hydraulic oil in the oil storage pipe (8) is low-condensation-point aviation hydraulic oil, and a three-way valve assembly (11,142) for shunting is arranged in the oil transportation pipeline.
  7. 7. The loading device of the dangerous goods logistics transportation carriage according to claim 5, wherein the self-limiting assembly (13) comprises a lateral pressurizing rod (134), and the temporary storage pipe (141) is fixedly arranged on the self-limiting assembly (13); The self-clamping assembly (14) further comprises a limiting clamping plate (147) which is sleeved on the lateral pressurizing rod (134) in a sliding manner, and the limiting clamping plate (147) is connected with the execution piston structure in the temporary storage pipe (141); when the actuating piston structure is pressed and extended, the limiting clamp plate (147) is driven to axially slide along the lateral pressurizing rod (134) so as to prop against the corner area of the goods.
  8. 8. The loading device of the dangerous cargo logistics transportation vehicle compartment according to claim 7, wherein the actuating piston structure in the temporary storage pipe (141) comprises two symmetrically arranged piston plates (144) and a piston rod (145) connected with the limiting clamp plate (147), and a limiting spring (146) for automatically resetting the piston plates (144) in an unloading state is further arranged in the temporary storage pipe (141).
  9. 9. The loading device of the hazardous materials logistics transportation vehicle compartment of claim 1, wherein the spring damping device (3) comprises a rectangular section die spring and a built-in one-way hydraulic damper, the one-way hydraulic damper is configured to have a non-linear damping characteristic, and a damping coefficient set value of the one-way hydraulic damper in a compression stroke is lower than a damping coefficient set value of the one-way hydraulic damper in a rebound stroke, so that the tray (2) is allowed to respond to depression quickly and rebound aftershock is restrained.
  10. 10. The loading device of the dangerous goods logistics transportation carriage according to claim 1, wherein an antistatic rubber layer is compounded on the surface of the tray (2) contacted with goods, a diversion trench is arranged on the surface of the antistatic rubber layer, an extension frame (7) is fixed on the bottom plate (1), the extension frame (7) is of an L-shaped structure, and a guide rail structure for restraining the movement track of the driving assembly (4) is integrated on the extension frame.

Description

Loading device of dangerous goods logistics transportation carriage Technical Field The invention belongs to the technical field of dangerous goods transportation, and particularly relates to a loading device of a dangerous goods logistics transportation carriage. Background With the rapid development of the modern chemical industry, the logistics transportation demands of dangerous chemicals such as inflammable, explosive, highly toxic and highly corrosive are growing increasingly. The safety requirements of the goods in the transportation process are extremely high, and any tiny leakage, dumping or violent collision can cause ecological disasters and even serious safety accidents. At present, the transportation of dangerous goods by logistics mainly depends on van trucks, and the inside of the van trucks is usually provided with universal fixing facilities such as binding belts, car stoppers or simple bottom trays for carrying standardized chemical barrels or special boxes. However, the existing dangerous goods transportation and fixation technology has significant limitations when dealing with complex road conditions. The traditional fixing mode is mostly static constraint, namely one-time locking during loading. However, in the actual transportation process, the vehicle is inevitably subjected to pavement pits, deceleration strips or sudden braking, which can generate severe vertical jolts and horizontal inertia forces. Under a continuous vibration environment, the static binding belt is easy to loose due to fatigue or lose pretightening force due to elastic deformation of the goods. More serious, when the vehicle is jumped vertically by a large margin, the goods often generate a transient 'throwing away' trend, and then the goods are heavily crashed to the bottom plate, and the repeated impact can not only damage the structural integrity of the packaging barrel, but also lead the goods to gradually displace in the horizontal direction, and finally possibly break away from a fixed area, so that the toppling leakage accident is generated. In addition, the prior art often focuses on only one dimension of fixation, and is usually limited only for the left and right sides of the cargo, but ignores longitudinal (front and rear) inertial impact generated during acceleration and deceleration of the vehicle. When the vehicle is braked suddenly, the great longitudinal inertia force can force the goods to slide along the length direction of the carriage, and the existing lateral clamp cannot provide enough longitudinal friction resistance. Meanwhile, the existing active hydraulic or pneumatic clamping system is usually required to be equipped with a complex power source and a sensor, so that the cost is high, potential safety hazards of electric ignition exist in an explosion-proof environment for dangerous goods transportation, the response speed is often delayed from mechanical impact, instant locking cannot be completed at the moment of bumping, and serious safety hysteresis exists. Disclosure of Invention The invention aims to provide a loading device of a dangerous goods logistics transportation carriage, which aims to solve the problems in the background technology. In order to achieve the aim, the invention provides the technical scheme that the loading device of the dangerous goods logistics transportation carriage comprises a bottom plate fixed at the bottom of the carriage and a tray arranged above the bottom plate in a floating manner, wherein a spring damping device for providing elastic support and damping buffering is arranged between the bottom plate and the tray; the device also comprises a driving component and self-limiting components, wherein the driving component is arranged at the bottom of the tray in a linkage way, and the self-limiting components are symmetrically arranged at two sides of the tray; The drive assembly is configured as a displacement conversion mechanism configured to convert vertical settlement displacement of the pallet relative to the base plate into thrust displacement outward in a horizontal direction when the pallet is loaded; the self-limiting assembly and the driving assembly form transmission fit, are configured to receive the outward thrust displacement in the horizontal direction output by the driving assembly, and convert the outward thrust displacement into lateral clamping actions towards the center of the tray by utilizing the lever principle, so that the self-adaptive locking of the goods by utilizing the gravity and jolt energy of the goods is realized. As a further technical scheme of the invention, the driving assembly comprises a transmission rod fixedly connected to the bottom end of the tray, a longitudinal clamping block which vertically ascends and descends along with the tray is connected to the transmission rod, a longitudinal guide rail for limiting horizontal displacement is fixedly arranged on the bottom plate, and the longitudinal clamping block