Novel universal trundle

Abstract

The utility model discloses a novel universal caster which comprises a support, the support comprises a top cover and supporting legs extending downwards along the two sides of the top cover in an inclined mode, a supporting shaft is arranged between the two supporting legs, a caster body is installed on the supporting shaft in a rotating mode, the caster body is two single wheels arranged side by side, an installation cavity is formed in the top cover, and the installation cavity is communicated with the supporting shaft. An upper bearing and a lower bearing are arranged in the mounting cavity, a connecting rod serving as a fastener is arranged in the upper bearing and the lower bearing in a penetrating manner, and the connecting rod upwards extends out of the top cover and is used for being connected with a vehicle body. The wheel body is the wheel set composed of the left wheel and the right wheel which are independent, load rotation is more flexible, friction with the ground can be reduced, the ground is effectively protected, the upper bearing and the lower bearing are adopted, the stability of the structure is guaranteed, the upper bearing and the lower bearing are connected with the aluminum alloy support through the connecting rod, the structure is simple, assembly is easy, and cost is low. The production cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to a trundle for transportation tools, in particular to a novel universal trundle. BACKGROUND

[0002] The trundle for transportation tools requires stable use, high load bearing, labor-saving turning, synchronous movement and long service life, and the trundle should minimize friction with the ground to protect the ground when in use.

[0003] However, the existing universal trundle cannot meet the above requirements. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a novel universal trundle with simple structure, low cost and effective ground protection.

[0005] The utility model discloses the following technical measures to realize the purpose: a novel universal trundle, including the support, the support includes the top cap and the support leg that extends obliquely downward along the both sides of the top cap, is equipped with the support shaft between the two support legs, and the wheel body is rotatably installed on the support shaft, characterized in that the wheel body is two single wheels arranged side by side, the inside of the top cap has an installation cavity, an upper bearing and a lower bearing are arranged in the installation cavity, a connecting rod as a fastener is arranged in the upper bearing and the lower bearing, and the connecting rod extends upwards out of the top cap to be connected with the vehicle body.

[0006] The wheel body of the utility model is composed of left and right separate wheels, load rotation is more flexible, friction with the ground can be reduced, the ground can be effectively protected, the upper and lower bearings are adopted to ensure the stability of the structure, and the upper and lower bearings and the aluminum alloy support are connected to form a structure by the connecting rod, so that the structure is simple, easy to assemble and low in production cost.

[0007] The middle part of the connecting rod has a hexagonal head for cooperation with a wrench, and the hexagonal head is located above the upper bearing and presses down the upper bearing.

[0008] The upper part of the connecting rod has external threads, and the connecting rod is threadedly connected with the vehicle body.

[0009] The support is integrally pressure die cast from aluminum alloy material, has high rigidity, few parts, simple structure and low production cost.

[0010] The upper bearing and the lower bearing are both deep groove ball bearings.

[0011] The single wheel is composed of an aluminum alloy wheel core and a tire part formed by pouring polyurethane tire rubber on the aluminum alloy wheel core with a preformed hole, the polyurethane tire rubber is tightly combined with the aluminum alloy wheel core in a surrounding state, the anti-coming-off function is achieved, the service life of the wheel is prolonged, and the use cost of the user is reduced.

[0012] The utility model discloses on the circumference of top cover distributes several arc weight reduction hole.

[0013] The utility model discloses between two single wheels and between each single wheel and support leg respectively be equipped with the casing of separating sleeve pipe on support axle.

[0014] The utility model discloses the both sides of single wheel have recess part, be equipped with dust cover on recess part, the middle part recess of dust cover is located in the recess part of single wheel, the dust cover is by separating sleeve pipe and makes its circumference touch pressure on the recess part edge of single wheel, can avoid the granular impurity in the inside of wheel in the running process of transport tool and influence its normal operation.

[0015] Compared with the prior art, the utility model has the following remarkable effects:

[0016] (1) the wheel body of the utility model is composed of the wheel group of left and right separate wheels, the load rotation is more flexible, can reduce the friction with the ground, effectively protects the ground, and the utility model adopts two bearings, guarantees the stability of structure, and is connected by connecting rod two bearings and aluminum alloy support connection group, simple structure, easy to assemble, and low production cost.

[0017] (2) the support of the utility model is integrally pressure die cast by aluminum alloy material, and the rigidity is high, the parts are few, the structure is simple, and the production cost can be reduced.

[0018] (3) the wheel of the utility model adopts the anti-coming-off technology, can effectively prolong the service life of the wheel, and reduce the use cost of the user.

[0019] (4) the utility model installs the dust cover on the both sides of single wheel, can avoid the granular impurity in the inside of wheel in the running process of transport tool and influence its normal operation.

[0020] (5) the utility model is simple in structure, low in manufacturing cost, convenient to assemble, strong in practicality, and is suitable for being widely popularized and used. DRAWINGS

[0021] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0022] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model;

[0023] Fig. 2 is the side view of the utility model;

[0024] Fig. 3 is the front view of the utility model;

[0025] Fig. 4 is along Fig. 2 the A-A line section view.

[0026] In the figure: 1 - support, 2 - top cover, 3 - leg, 4 - support shaft, 5 - single wheel, 6 - upper bearing, 7 - lower bearing, 8 - connecting rod, 9 - hexagonal head, 10 - weight reduction hole, 11 - separation sleeve. DETAILED DESCRIPTION

[0027] As Figs. 1-4 shown, it is a novel universal caster of the utility model, including support 1, support 1 includes top cover 2 and along top cover 2 both sides obliquely downward extending leg 3, support 1 is integrally pressure casting by aluminium alloy material, and the rigidity strength is high. There are several arc-shaped weight reduction holes 10 on the circumference of top cover 2 to reduce the weight of support. Between two legs 3, support shaft 4 is equipped, and wheel body is rotatably installed on support shaft 4, and wheel body is two single wheels 5 arranged side by side, and load rotation is more flexible, can reduce the friction with ground, effectively protects ground. The inside of top cover 2 has installation cavity, and upper bearing 6 and lower bearing 7, which are all deep groove ball bearings, are arranged in the installation cavity. Connecting rod 8, as a fastener, is arranged in upper bearing 6 and lower bearing 7, and connecting rod 8 extends out of top cover 2 upwards to be connected with vehicle body. The middle part of connecting rod 8 has hexagonal head 9 for cooperating with spanner, and hexagonal head 9 is located above upper bearing 6 and presses down upper bearing 6; the upper part of connecting rod 8 has external thread, and connecting rod 8 is threadedly connected with vehicle body.

[0028] The single wheel 5 of the embodiment is composed of an aluminum alloy wheel core and an outer tire part formed by pre-holing the aluminum alloy wheel core and then pouring polyurethane tire rubber on the aluminum alloy wheel core to coat the aluminum alloy wheel core, the wheel adopts anti-bleeding technology, which can effectively improve the service life of the wheel and reduce the use cost of the user.

[0029] Separation sleeve 11 is arranged on support shaft 4 between two single wheels 5 and between each single wheel 5 and leg 3. The two sides of single wheel 5 have recessed parts, and dust covers are arranged on the recessed parts, the middle part of the dust cover is holed and recessed, the recessed part is located in the recessed part of single wheel 5, the dust cover is abutted by the separation sleeve so that the circumferential edge of the dust cover is in contact pressure on the edge of the recessed part of single wheel 5, and the dust cover can prevent particles from entering the inside of the wheel during the running of the transport tool to affect the normal operation of the wheel.

[0030] The functional principle of the utility model is as follows:

[0031] 1、Through the threaded connecting rod and bearing and aluminum alloy support connection, realize the universal rotation. The wheel in the wheel group can be independently operated at different rotating speeds, compared with the structure of a single wheel, the friction with the ground is reduced, and the ground can be effectively protected.

[0032] 2、Aluminum alloy wheel core pre-hole, when pouring polyurethane wheel rubber, form a surrounding state, make polyurethane and aluminum alloy wheel core close combination, achieve the function of preventing glue from falling off.

[0033] The embodiments of the utility model are not limited to this, according to the above content of the utility model, according to the ordinary technical knowledge and usual means of the art, the utility model can also make other various forms of modification, replacement or alternation, all fall within the protection scope of the utility model.

Claims

1. A new type of universal caster, comprising a support frame, the support frame comprising a top cover and two support legs extending obliquely downward along both sides of the top cover, a support shaft being arranged between the two support legs, and a wheel body being rotatably mounted on the support shaft, characterized in that: The wheel body is two single wheels arranged side by side, the inside of the top cover has a mounting cavity, an upper bearing and a lower bearing are arranged in the mounting cavity, a connecting rod as a fastener is arranged in the upper bearing and the lower bearing, the connecting rod extends upwardly out of the top cover for connecting with the vehicle body.

2. The new type universal caster according to claim 1, characterized in that: The middle part of the connecting rod has a hexagonal head for cooperating with a wrench, and the hexagonal head is located above the upper bearing and presses downwardly on the upper bearing.

3. The new type universal caster according to claim 2, characterized in that: The upper part of the connecting rod has an external thread, and the connecting rod is screwed with the vehicle body.

4. The new type universal caster according to claim 3, characterized in that: The support is integrally die-cast from an aluminum alloy material.

5. The novel universal caster as claimed in claim 4, wherein: The upper bearing and the lower bearing are both deep groove ball bearings.

6. The novel universal caster as claimed in claim 5, wherein: The single wheel is composed of an aluminum alloy wheel core and an outer tire part formed by pouring polyurethane tire rubber on the aluminum alloy wheel core and preformed holes in the aluminum alloy wheel core.

7. The novel universal caster as claimed in claim 6, wherein: A partition sleeve is arranged on the support shaft between the two single wheels and between each single wheel and the support leg.

8. The new type universal caster according to claim 7, characterized in that: The two sides of the single wheel have recesses, a dust cover is arranged on the recesses, the middle part of the dust cover is perforated and recessed, the recessed part is located in the recess of the single wheel, the dust cover is abutted by the partition sleeve so that the peripheral edge of the dust cover is in contact with the edge of the recess of the single wheel.

9. The novel universal caster as claimed in claim 8, wherein: A plurality of arc-shaped weight-reducing holes are distributed on the periphery of the top cover.

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