CN108178863B

CN108178863B - Wheel chock

Info

Publication number: CN108178863B
Application number: CN201810118684.3A
Authority: CN
Inventors: 陈开文; 王锡普; 唐静
Original assignee: Deyang Zhongda Railway Reinforcing Material Co ltd
Current assignee: Deyang Zhongda Railway Reinforcing Material Co ltd
Priority date: 2015-04-29
Filing date: 2015-04-29
Publication date: 2020-09-08
Anticipated expiration: 2035-04-29
Also published as: CN104829926A; CN104829926B; CN108178863A

Abstract

The invention discloses a wheel chock special for wheel type goods of a sheltering wheel, which has scientific material formula, reasonable structure, safe and reliable use, easy storage and use, safe and reliable use, replacement of wood by plastic, reduction of forest felling, environmental protection and remarkable social, environmental protection and economic benefits, and the mechanical property of the product completely meets the ministerial standard of the original railway department.

Description

Wheel chock

Technical Field

The invention belongs to the railway freight loading reinforcement technology, relates to a cargo loading reinforcement device, and particularly relates to a wheel block special for blocking wheel type cargos.

Background

When transporting goods by railway vehicles, the goods are reinforced after being loaded. For cylindrical goods, a triangular prism-shaped device is used for covering the bumper, the device is called a triangular bumper, and the cross section outline of the triangular bumper is an isosceles triangle; for wheeled goods (such as automobiles and engineering vehicles), the wheel with larger radius is covered by a triangular block, the wheel with smaller radius is covered by a wheel block, the wheel block is also a triangular prism-shaped device, and the difference is only that the working surface of the wheel block is provided with an arc-shaped groove which is consistent with the contour of the wheel. When the reinforcing equipment is used, the reinforcing equipment is anchored on the cargo support.

The reinforcement equipment is made of wood at first, is a disposable consumable, has extremely high wood consumption, not only has high transportation cost, but also conflicts with forest regulations increasingly, and is difficult to continue. Then replacing wood with plastic, and changing the plastic into plastic.

In the existing plastic retaining block, the main materials are plastic and mineral powder, and an auxiliary agent is added, so that the conflict with forest regulations is avoided, and the development direction is formed. However, there are some problems, mainly:

1. the plastic is combustible, so that fire safety hidden danger exists;

2. the plastic products are easy to age, the strength is reduced, the overdue plastic blocks cannot be used, the stock preparation quantity of the railway department is not well mastered, and the scrapping loss is large.

3. The structural design of the product is not good enough, the stress analysis is not scientific, the size proportion and the arrangement position of the ribs are not reasonable, so that the product has larger weight, more materials, complex moulds, more working procedures and long manufacturing period.

Disclosure of Invention

Aiming at the problems, the invention improves the material and the structure of the product, and provides the following technical scheme:

the wheel chock is formed by uniformly mixing the following raw materials in parts by weight and then performing hot extrusion and cold pressing on the raw materials:

HDPE resin 100

15-20 parts of LDPE (Low-Density polyethylene) or POE (polyolefin elastomer) resin

30-70% of red mud

Lubricant 1

Coupling agent 1

0.5% of antioxidant

Carbon Black 0.15

Flame retardant 33

The lubricant is HSt stearic acid; the coupling agent is KR-212 coupling agent; the antioxidant comprises a main antioxidant and an auxiliary antioxidant, wherein the main antioxidant is 1010 antioxidant, the using amount of the main antioxidant is 0.2, and the auxiliary antioxidant is DLTP antioxidant, the using amount of the auxiliary antioxidant is 0.3; the flame retardant comprises decabromodiphenyl ether and lead trioxide, wherein the dosage of the decabromodiphenyl ether is 25, and the dosage of the lead trioxide is 8.

The wheel block is in a triangular prism shape and is provided with a bottom surface, a front surface serving as a blocking working surface, a back surface, a left end surface and a right end surface, the cross section profile of the wheel block is in an inverted V shape, the profile connecting line is in an isosceles triangle shape, and reinforcing ribs which are vertically interwoven are arranged on the inner wall of an inverted V-shaped abdominal cavity; the shielding working surface is a waist-located surface, and an arc-shaped groove corresponding to the contour of the wheel is formed in the working surface; the back surface is the surface of the other waist, the middle part of the back surface is a vertically-interwoven net structure, and the meshes are counter bores; the bottom surface is provided with a supporting boss, and an anchor penetrating platform extends out of the bottom surface towards the back surface direction; the end face is provided with a sinking groove, and an end face reinforcing rib is arranged in the sinking groove.

The end face of the wheel chock is formed by combining an upper vertical face and a lower inclined face, and the lower inclined faces of the left end face and the right end face are symmetrically inclined from two ends to a midpoint, so that the longitudinal length of the bottom face of the wheel chock is smaller than that of the chock top.

The invention has the beneficial effects that: through the improvement on the material formula and the product structure, the service performance of the product is greatly improved, the product is safe and reliable, easy to store and store, good in ageing resistance and weather resistance, antistatic and flame-retardant, wood is replaced by plastic, forest felling is reduced, the environment is protected, and the method has remarkable social, environment-friendly and economic benefits. The following table shows the mechanical property test of the product, which completely meets the ministry-issued standard of the original railway ministry.

Material physical property value test value ministry issued standard

Compressive strength of MPa 35.85 is more than or equal to 27

The unnotched impact strength KJ/square meter (25 ℃) is 25.6313-22

The unnotched impact strength KJ/square meter (-35 ℃) is 13.825-10

Bending strength Mpa 25.65 ≥ 18

Vicat softening point temperature 116 ≥ 100

The relative density is 1.261.12-1.28.

Drawings

FIG. 1 is a cross-sectional structural view of a wheel block;

FIG. 2 is a top view of the wheel block;

FIG. 3 is a side view of the wheel chock;

FIG. 4 is a bottom view of the wheel chock;

the reference numbers in the figures indicate:

2, counter bore; 3-an anchor piercing platform; 4, punching the anchor nail; 5, reinforcing ribs on the inner wall of the abdominal cavity; 6-end face reinforcing ribs; 7-bottom surface support boss; 8-arc groove of working surface of wheel chock.

Detailed Description

The wheel chock disclosed by the invention is formed by uniformly mixing the following raw materials in parts by weight and then performing hot extrusion and cold pressing on the raw materials:

HDPE resin 100

30-70% of red mud (waste residue of sulfuric acid plant)

Lubricant 1

Coupling agent 1

0.5% of antioxidant

Carbon Black 0.15

Flame retardant 33

The wheel block is in a triangular prism shape and is provided with a bottom surface, a front surface serving as a blocking working surface, a back surface, a left end surface and a right end surface, the cross section profile of the wheel block is in an inverted V shape, the profile connecting line is in an isosceles triangle shape, and the inner wall of an inverted V-shaped abdominal cavity is provided with a reinforcing rib 5 which is vertically interwoven; the shielding working surface is a waist-positioned surface, and an arc-shaped groove 8 corresponding to the contour of the wheel is arranged on the working surface; the back surface is the surface of the other waist, the middle part of the back surface is a vertically-interwoven net structure, and the meshes are counter bores 2; the bottom surface is provided with a support boss 7, the bottom surface extends out of an anchor piercing platform 3 towards the back surface direction, and the platform 3 is provided with an anchor piercing hole 4; the end face is provided with a sinking groove, and an end face reinforcing rib 6 is arranged in the sinking groove.

The manufacturing process comprises the following steps:

and (5) manufacturing an extrusion molding die of the wheel chock.

Ingredients

Example one

100 parts of HDPE resin, 20 parts of LDPE resin, 50 parts of red mud, 1 part of HSt stearic acid, 1 part of KR-212 coupling agent, 0.2 part of 1010 primary antioxidant, 0.3 part of DLTP auxiliary antioxidant, 0.15 part of carbon black, 25 parts of decabromodiphenyl ether and 8 parts of lead trioxide are taken, and the components are stirred and mixed uniformly.

Example two

100 parts of HDPE resin, 18 parts of POE resin, 60 parts of red mud, 1 part of HSt stearic acid, 1 part of KR-212 coupling agent, 0.2 part of 1010 main antioxidant, 0.3 part of DLTP auxiliary antioxidant, 0.15 part of carbon black, 25 parts of decabromodiphenyl ether and 8 parts of lead trioxide are taken, and the components are stirred and mixed uniformly.

And (3) feeding the ingredients into a plastic extruding machine, heating, smelting, extruding, filling into a mold, pressing and molding, solidifying, and demolding to obtain the product.

Claims

1. The wheel chock is formed by uniformly mixing the following raw materials in parts by weight and then performing hot extrusion and cold pressing on the raw materials:

HDPE resin 100

30-70% of red mud

Lubricant 1

Coupling agent 1

0.5% of antioxidant

Carbon Black 0.15

A flame retardant 33;

2. The wheel chock of claim 1, wherein said lubricant is selected from the group consisting of HSt stearic acid; the coupling agent is KR-212 coupling agent; the antioxidant comprises a main antioxidant and an auxiliary antioxidant, wherein the main antioxidant is 1010 antioxidant, the using amount of the main antioxidant is 0.2, and the auxiliary antioxidant is DLTP antioxidant, the using amount of the auxiliary antioxidant is 0.3; the flame retardant comprises decabromodiphenyl ether and lead trioxide, wherein the dosage of the decabromodiphenyl ether is 25, and the dosage of the lead trioxide is 8.

3. The wheel chock of claim 1, wherein the end face of the wheel chock is formed by combining an upper vertical face and a lower inclined face, and the lower inclined faces of the left and right end faces are symmetrically inclined from both ends to a midpoint, so that the longitudinal length of the bottom face of the wheel chock is smaller than that of the chock top.