CN113291097A

CN113291097A - Grounding type metal retractable lifting caster

Info

Publication number: CN113291097A
Application number: CN202110814362.4A
Authority: CN
Inventors: 王学国; 王宫
Original assignee: Hubei Changxi Mushroom Machinery Manufacturing Co ltd
Current assignee: Hubei Changxi Mushroom Machinery Manufacturing Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-08-24

Abstract

A formula metal that contacts to earth contracts and rises truckle, includes support and truckle, its characterized in that: the utility model discloses a swivel joint wrench, including the support, the support is provided with the pivot, the pivot is connected with the upper end of connecting piece, the lower extreme of connecting piece links together through a bolt and the upper end of truckle mount, the truckle passes through No. two bolts to be fixed at truckle mount lower extreme, the lateral wall that round pin axle one side was kept away from to the spanner main part is laminated mutually with the top of truckle mount when the truckle stretches out the support. The invention has the advantages of simple structure, convenient operation, convenient installation and maintenance and long service life.

Description

Grounding type metal retractable lifting caster

Technical Field

The invention relates to the technical field of casters, in particular to a grounding metal retractable lifting caster.

Background

The conventional caster can be divided into a movable caster and a fixed caster, wherein the movable caster is also a universal wheel, and the structure of the movable caster allows 360-degree rotation; the fixed caster has no rotating structure and can not rotate around the self axial direction. The conventional caster comprises a bracket and wheels rotatably mounted on the bracket, and the bracket is fixed to the bottom of an external work station appliance, maintenance or bearing appliance, thereby facilitating the transportation of the work station appliance, maintenance or bearing appliance. However, the conventional caster wheel does not have the function of automatic lifting, and the wheels are inconvenient to fix after bearing heavy objects, so that the condition of rolling easily occurs, and the work of workers is influenced.

The invention discloses an automatic lifting caster wheel which is disclosed by the invention of China patent grant publication No. CN 202294075U, wherein the date of grant publication is 7/4/2012, and comprises a support and wheels arranged at the lower part of the support, a vertically arranged telescopic rod is fixedly arranged on the support, the telescopic rod comprises a fixed end and a movable end, the fixed end is fixedly connected with the support, a brake block which is arranged towards an external brake surface is convexly arranged at the movable end, and the telescopic rod comprises a connecting sleeve, a support shaft inserted in the connecting sleeve and a pressure spring which is arranged in the connecting sleeve and forms axial movement of the support shaft along the telescopic rod.

The device can rise and fall automatically, and is convenient to fix after bearing a heavy object. But the device presses the wheel into the bracket by the compression of the compression spring by the weight bearing object, if the weight bearing object is changed, the distance between the brake block and the ground is required to be adjusted at any time, and the use is very inconvenient; and the pressure spring belongs to quick-wear parts, if the pressure spring damages, the truckle will lose its raising and lowering functions, and the pressure spring that sets up in the connecting sleeve simultaneously is dismantled and also can be very troublesome.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a grounding metal retractable caster which has the advantages of simple structure, simple and convenient operation, convenient installation and maintenance and long service life.

In order to achieve the above purpose, the technical solution of the invention is as follows: a formula metal that contacts to earth contracts and rises truckle, includes support and truckle, its characterized in that: the utility model discloses a swivel joint wrench, including the support, the support is provided with the pivot, the pivot is connected with the upper end of connecting piece, the lower extreme of connecting piece links together through a bolt and the upper end of truckle mount, the truckle passes through No. two bolts to be fixed at truckle mount lower extreme, the lateral wall that round pin axle one side was kept away from to the spanner main part is laminated mutually with the top of truckle mount when the truckle stretches out the support.

The support comprises two side vertical plates and a top plate located at the tops of the side vertical plates, a first sliding groove is formed in each side vertical plate, and a first bolt penetrates through the first sliding groove and is connected in the first sliding groove in a sliding mode.

A second sliding groove is formed in the side vertical plate below the first sliding groove, and a second bolt penetrates through the second sliding groove and is connected in the second sliding groove in a sliding mode.

The length of the first sliding groove is equal to that of the second sliding groove.

The width of the wrench body satisfies the following formula:

the width of the wrench body = the height difference between the pin shaft and the first bolt + the length of the first sliding groove in the state that the caster wheel is completely retracted into the support.

The support is characterized in that a connecting seat is arranged above the support, and the connecting seat and the support are connected together through a universal turntable.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has simple structure, the main functional components are only the wrench device, the connecting piece and the caster fixing frame, and the main functional components are connected with the bracket by the pin shaft, so the connecting structure is very convenient for installation and maintenance; in actual operation, the truckle relies on its dead weight to stretch out the support, relies on the inseparable laminating realization support of spanner main part and truckle mount, relies on the handle to reset the truckle that stretches out, and whole process operation is simple and convenient.

2. According to the invention, the first sliding groove and the second sliding groove are arranged on the side vertical plate, so that the running of the caster wheel fixing frame and the caster wheel can be guided and limited.

3. All functional parts are of pure mechanical structures, no elastic part or electronic part exists, the failure rate is low, and the service life is long.

4. According to the invention, the universal rotary table is arranged between the support and the connecting seat, so that the caster wheel is changed into a movable caster wheel, and the flexibility of the caster wheel is improved.

Drawings

Fig. 1 is a first (perspective) view of the static structure of the present invention.

Fig. 2 is a second (side view) schematic structural view of the present invention in a resting state.

Fig. 3 is a first schematic structural diagram (perspective view) of the mobile state of the present invention.

Fig. 4 is a second schematic structural view (side view) of the mobile state of the present invention.

Fig. 5 is an exploded view of the present invention.

In the figure: support 1, truckle 2, wrench device 3, connecting piece 4, truckle mount 5, spanner main part 6, handle 7, round pin axle 8, bolt 9 No. two, bolt 10, side riser 11, roof 12, spout 13 No. one, spout 14 No. two, connecting seat 15, universal carousel 16.

Detailed Description

The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.

Referring to fig. 1, 2 and 5, a ground-contact type metal retractable caster comprises a support 1 and a caster 2, wherein a wrench device 3, a connecting piece 4 and a caster fixing frame 5 are sequentially arranged in the support 1 from top to bottom, a connecting seat 15 is arranged above the support 1, the support 1 comprises two side vertical plates 11 and a top plate 12 positioned at the tops of the side vertical plates 11, the connecting seat 15 and the top plate 12 of the support 1 are connected together through a universal turntable 16, a first sliding groove 13 and a second sliding groove 14 which are the same in length are arranged on the side vertical plates 11, the wrench device 3 comprises a wrench main body 6 and a handle 7, the handle 7 is arranged obliquely upwards, an included angle between the wrench main body 6 and the handle 7 exceeds 120 degrees, one end of the wrench main body 6 is fixedly connected to the side vertical plates 11 through a pin 8, and the other end of the wrench main body 6 is connected with the upper end of the connecting piece 4 through a, the lower extreme of connecting piece 4 links together through the upper end of a bolt 9 with truckle mount 5, a bolt 9 passes a spout 13 and sliding connection in a spout 13, truckle 2 is fixed at truckle mount 5 lower extreme through No. two bolts 10, No. two bolts 10 pass No. two spouts 14 and sliding connection in No. two spouts 14, the lateral wall that 8 one side of round pin axle were kept away from to spanner main part 6 is laminated with the top of truckle mount 5 when truckle 2 stretches out support 1 mutually.

In order to ensure that the wrench body 6 can give the maximum force support when the caster 2 is extended out of the bracket 1, the width of the wrench body 6 satisfies the following formula:

the width of the wrench body 6 = the height difference between the pin 8 and the first latch 9 + the length of the first sliding groove 13 in the state where the caster 2 is fully retracted into the bracket 1.

In most cases, the device is in the state shown in fig. 1-2, the caster wheels 2 are located inside the bracket 1, and the two side vertical plates 11 are grounded to provide support for the equipment, when the equipment needs to be moved, the equipment is lifted to a certain height, at the moment, the caster wheel 2 falls down along the second sliding groove 14 under the action of self weight, the falling caster wheel 2 drives the caster wheel fixing frame 5 to fall down along the first sliding groove 13, the falling caster wheel fixing frame 5 drives the wrench device 3 to turn down around the pin shaft 8 through the connecting piece 4, when the caster 2 reaches the lowest end of the second sliding groove 14, the side wall of the wrench main body 6, which is far away from the side of the pin shaft 8, is attached to the top of the caster fixing frame 5, based on the lever principle, the wrench main body 6 can provide powerful support for the caster fixing frame 5 to prevent the caster 2 from retracting due to heavy pressure, and the state of the device is shown in fig. 3 and 4; when equipment reachd the assigned position and need park, only need to grab handle 7 with handle 7 up pull can, the spanner main part 6 that turns up can drive truckle mount 5 through connecting piece 4 and move up to drive truckle 2 and shift up, when a bolt 9 on truckle mount 5 reachd the top of a spout 13, in truckle 2 retracts support 1 completely, side riser 11 landed and provides the support for equipment, accomplishes the transport work.

Claims

1. A formula metal that contacts to earth contracts and rises truckle, includes support (1) and truckle (2), its characterized in that: spanner device (3), connecting piece (4) and truckle mount (5) have set gradually from the top down in support (1), spanner device (3) are including spanner main part (6) and handle (7), round pin axle (8) fixed connection is passed through on support (1) to the one end of spanner main part (6), and the other end of spanner main part (6) links together through the upper end of pivot with connecting piece (4), the lower extreme of connecting piece (4) links together through the upper end of a bolt (9) with truckle mount (5), truckle (2) are fixed at truckle mount (5) lower extreme through No. two bolts (10), the lateral wall of round pin axle (8) one side is kept away from in spanner main part (6) is laminated with the top of truckle mount (5) when truckle (2) stretch out support (1).

2. A ground contacting metal retraction and elevation castor according to claim 1, wherein: the support (1) comprises two side vertical plates (11) and a top plate (12) located at the tops of the side vertical plates (11), a first sliding groove (13) is formed in each side vertical plate (11), and a first bolt (9) penetrates through the first sliding groove (13) and is connected into the first sliding groove (13) in a sliding mode.

3. A ground contacting metal retraction and elevation castor according to claim 2, wherein: a second sliding groove (14) is formed in the side vertical plate (11) below the first sliding groove (13), and the second bolt (10) penetrates through the second sliding groove (14) and is connected in the second sliding groove (14) in a sliding mode.

4. A ground contacting metal retraction and elevation castor according to claim 3, wherein: the first sliding groove (13) and the second sliding groove (14) are equal in length.

5. A ground contacting metal retraction and elevation castor according to claim 2, wherein: the width of the wrench body (6) satisfies the following formula:

the width of the wrench body (6) is = the height difference between the pin shaft (8) and the first plug pin (9) and the length of the first sliding groove (13) when the caster (2) is completely retracted into the support (1).

6. A ground contacting metal retraction and elevation castor according to claim 1, wherein: a connecting seat (15) is arranged above the support (1), and the connecting seat (15) is connected with the support (1) through a universal turntable (16).