CN217705393U - Circular-ring type shovel placenta with circular-arc teeth - Google Patents

Abstract

The utility model provides a cost is lower, and it is more convenient to use, tears the tire shovel placenta that child efficiency is higher open, circle shape shovel placenta outer loop includes the circular arc profile of tooth, shovel placenta bottom surface adopts the spherical design, not only improves the requirement of shovel child efficiency, also the effectual rim of having protected.

Description

Circular-ring type shovel placenta with circular-arc teeth

Technical Field

The utility model relates to an automobile tire dismouting machine equipment relates to an automobile tire shovel child structure, especially relates to a modified ring type shovel placenta that has the circular arc tooth.

Background

Most of the existing automobile tire dismounting and mounting machines adopt a shovel to shovel the tire, the shovel is used for vertically extruding the rubber tire in order to separate the rubber tire from a rim in the tire shoveling process, the deformation of the rubber tire is large, scratches are formed on the surface of the rubber tire, and the service life of the rubber tire is shortened.

The prior art has adopted the tire dismantling machine of the design structure of the circular tire shoveling wheel, such as the tire dismantling disc 6 of patent CN 2367494Y; CN2657959Y left pry placenta 14; CN205468345U, shovel tyre 2-6; CN205836402U, prying placenta 88; CN21579302U tyre-disassembling shovel 13/15; TWM462677U, tire removal disk 334, although the use of a circular spade tire wheel reduces scoring of the rubber rim surface.

However, the tire removing disc with the smooth periphery is usually long in use, usually in 20-24 seconds, and is difficult to operate and low in working efficiency in the actual tire shoveling process.

Disclosure of Invention

The utility model aims to improve the prior annular shovel placenta and provide a tire shovel placenta which has lower cost, more convenient use and higher tire dismounting efficiency; the outer ring of the circular shovel placenta is in an arc tooth shape, the bottom surface of the shovel placenta can be a spherical surface, a cambered surface, a plane, a curved surface and the like, and the circular shovel placenta is preferably a spherical surface; the shovel placenta can be an inner arc surface, an outer arc surface, a plane, a curved surface or a spherical surface, and preferably is an inner arc surface;

preferably, the design is interior arc surface above the shovel placenta, be equipped with the strengthening rib on the interior arc surface, the strengthening rib is connected interior arc surface and is torn annular external diameter in the child dish open, and interior annular external diameter department sets up the shoulder hole, the strengthening rib plays and supports the bottom surface sphere and strengthen whole support intensity, reduces the vibration phenomenon of shovel placenta and rim, improves shovel child efficiency.

Preferably, the radian of the circular arc teeth is 21.18-24 degrees, and the preferred radian is 22.5 degrees;

preferably, the distance between the circular arc teeth is 28.48mm-32.23mm, and the preferred distance is 30.42mm;

preferably, the number of the circular arc teeth is 12-20, and the preferred number is 16;

preferably, the diameter of the shovel placenta inner ring is 30-34mm, preferably 32mm;

preferably, the diameter of the outer ring of the shovel placenta is 145mm-160mm, preferably 151mm;

preferably, the thickness of the shovel placenta is 26mm-35mm, preferably 30mm;

preferably, the diameter of the bottom spherical surface is 300mm-330mm, preferably 316mm;

preferably, the shovel placenta includes the shoulder hole for the installation bearing makes the shovel placenta can rotate in a flexible way, is favorable to shoveling the child.

The utility model also provides a tire dismounting machine, which comprises the annular shovel placenta;

preferably, the tire removing machine further comprises a cross arm, and the shovel placenta and the cross arm can be fixedly connected;

preferably, the shovel placenta is fixedly connected with the cross arm through a positioning bolt, and the shovel placenta is positioned at the front end of the cross arm;

preferably, the shovel placenta can control the circumferential rotation through a bearing, and is screwed into a cross arm to be fastened through the bearing and a gasket by a screw shaft;

preferably, the shovel placenta is connected and fastened with the front end of the cross arm by a positioning screw, and the shovel placenta is formed to be parallel to the tire;

preferably, the tire removing machine comprises 1 shovel plate, 2 bearings, 2 screw shafts, 1 gasket and 1 cross arm;

preferably, the cross arm is connected with a pneumatic front cutting driving device, so that tires are easy to shovel;

preferably, the rear end of the cross arm comprises a horizontal driving device which can stretch out and draw back, and the relative position is adjusted according to the diameter of a tire hub;

preferably, the cross arm is connected with an upright post of the tire dismounting machine, is connected through a sliding plate and is provided with a cylinder vertical driving device;

preferably, the tire dismounting machine upright post and the tire dismounting machine main machine are tightly pressed and fixed through a bolt;

the utility model also provides a method of wheel hub and rim of separation tire, use the shovel placenta.

The utility model has the advantages as follows:

the utility model discloses designed square tooth, zigzag tooth respectively and improved shovel placenta outer loop edge, though also can both raise the efficiency, but produce the fish tail on rim surface easily. And the annular shovel placenta outer loop adopts the circular arc profile of tooth, compares in with square tooth or zigzag tooth, has slick and sly transition with the contact surface of rim, is difficult to produce the fish tail to the rim surface, has both solved the requirement that improves shovel child efficiency, also effectual protection the rim.

The utility model discloses a shovel placenta bottom surface adopts the spherical surface design, strengthens with tire rim area of contact, is favorable to shoveling the child fast.

The utility model discloses a shovel placenta outer loop adopts the design of circular arc profile of tooth, can reduce the area of contact of shovel placenta and rim, and the friction force of increase shovel placenta and tire rim reduces the resilience vibrations of shovel placenta and rim, is favorable to steady shovel child.

The utility model discloses a shovel disk top design inner arc face has the strengthening rib to connect, and the strengthening rib plays and supports the bottom surface sphere and strengthen whole support intensity, reduces the vibration phenomenon of shovel disk and rim, improves shovel child efficiency.

The utility model discloses a shovel placenta internal diameter design has the shoulder hole for the installation bearing makes the shovel placenta can rotate in a flexible way, can strengthen shovel placenta whole working strength, guarantees mechanical properties.

The utility model discloses a shovel placenta can be applicable to any automobile tire dismouting machine equipment, and the cost of manufacture is low, improves and tears child efficiency open, and the time that tears child consumption open of great reduction, convenient and practical.

Drawings

Fig. 1 is a schematic view of a shovel placenta structure with six circular arc teeth provided by the present invention;

fig. 2 is a schematic view of a shovel placenta structure with twelve circular arc teeth provided by the present invention;

fig. 3 is a schematic view of a shovel placenta structure with twenty circular arc teeth provided by the present invention;

fig. 4 shows a connection and fixation mode of the shovel placenta with sixteen circular arc teeth and the cross arm provided by the utility model;

fig. 5 contains a schematic diagram of the working state of the tyre removing machine for shoveling the placenta according to the present invention;

note: 1-screw shaft, 2-bearing; 3-a gasket; 4-shovel placenta; 5-cross arm.

Detailed Description

The embodiment of the utility model is as follows: when specifically using the utility model discloses a during the shovel placenta, keep flat the tire to the work revolving stage on, fasten with the lock nut center, pull and correspond perpendicular pneumatic valve drive arrangement on the control cabinet, the tire top suitable position is arranged in to the adjustment shovel placenta. Pulling the corresponding horizontal air valve on the console to press the front shovel placenta of the cross arm against the lip of the rim and pressing the shovel placenta about 20mm downward, as shown in fig. 5.

The pedal starts the working rotary table to rotate the tire, the corresponding front cutting air cylinder valve on the control console is pulled, the shovel placenta enters between a steel ring and a rim, the air cylinder valve is cut before the shovel placenta is pressed down and locked to fix the shovel placenta, the tire working rotary table is rotated at the moment, when the separation of the wheel hub and the rim is counted, the locking front cutting air cylinder valve is loosened, the shovel placenta at the front end of the transverse arm is enabled to be externally arranged and larger than the wheel hub, the corresponding vertical air valve driving device on the control console is pulled to lift the shovel placenta at the front end of the transverse arm, and the shovel tire process is completed.

Example one

As shown in fig. 1, the utility model relates to a shovel placenta structure with six circular arc teeth, the radian of circular arc tooth is 81.15 degrees, and the interval of circular arc tooth is 76mm, and shovel placenta outer loop diameter is 151mm, and shovel placenta inner ring diameter is 32mm, and shovel placenta thickness is 30mm, and bottom surface spherical diameter is 316mm. According to the connection mode shown in fig. 4, when the shovel placenta is used for a tire removing test, the shovel placenta and a rim are obviously vibrated, the tooth form strength is low, the tooth form is broken, and the tire removing work is not finished.

Example two

As shown in fig. 2, the utility model relates to a shovel placenta structure with twelve circular arc teeth, the radian of circular arc tooth is 24 degrees, and the interval of circular arc tooth is 32.23mm, and shovel placenta outer loop diameter is 151mm, and shovel placenta inner ring diameter is 32mm, and shovel placenta thickness is 30mm, and bottom surface spherical diameter is 316mm. According to the connection mode shown in figure 4, when the shovel placenta is used for a tire dismounting test, the shovel placenta and a rim do not vibrate, the tooth profile strength is generally 10-16 seconds, and the working efficiency is improved compared with that of the shovel placenta without circular arc teeth.

EXAMPLE III

As shown in fig. 3, the utility model relates to a shovel placenta structure with twenty circular-arc teeth, the radian of circular-arc tooth is 21.18 degrees, and the interval of circular-arc tooth is 28.48mm, and the quantity of circular-arc tooth is 20, and shovel placenta outer loop diameter is 151mm, and shovel placenta inner ring diameter is 32mm, and shovel placenta thickness is 30mm, and bottom surface spherical diameter is 316mm. According to the connection mode shown in figure 4, when the shovel placenta is used for a tire removing test, the shovel placenta and a rim do not vibrate, the tooth form strength is good, the shovel placenta is used for 16-20 seconds, and the working efficiency is improved compared with the shovel placenta without circular arc teeth.

Example four

As shown in fig. 4, the utility model relates to a shovel placenta and connection structure of xarm with sixteen circular arc teeth, the radian of circular arc tooth is 22.5 degrees, and the interval of circular arc tooth is 30.42mm, and shovel placenta outer loop diameter is 151mm, and shovel placenta inner ring diameter is 32mm, and shovel placenta thickness is 30mm, and bottom surface spherical diameter is 316mm. Comprises a screw shaft 1, a bearing 2, a gasket 3, a shovel placenta 4 and a cross arm 5. The shovel placenta 4 is fixed on a cross arm 5 through a bearing 2, a screw shaft 1 and a gasket 3. When the shovel placenta is used for a tire dismantling test, no vibration occurs between the shovel placenta and a rim, the tooth form strength is good, the use time is 4-6 seconds, and the working efficiency is highest.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims (7)

1. A circular shovel placenta is characterized in that an outer ring of the shovel placenta comprises circular arc teeth, and the bottom surface of the shovel placenta can be one of a spherical surface, a cambered surface, a plane and a curved surface; the shovel placenta can be one of an inner arc surface, an outer arc surface, a plane, a curved surface and a spherical surface.

2. The torus-type shovel placenta according to claim 1, wherein the arc of the circular arc teeth is 21.18-24 degrees.

3. The torus-shaped shovel placenta according to claim 2, wherein the number of circular arc teeth is 12-20.

4. The torus-type shovel placenta according to claim 3, wherein the pitch of the circular arc teeth is between 28.48mm and 32.23mm.

5. The torus-type shovel placenta according to claim 4, wherein the shovel placenta outer ring diameter is 145mm to 160mm; the thickness of the shovel placenta is 26mm-35mm; the diameter of the spherical surface of the bottom surface of the shovel placenta is 300mm-330mm.

6. The torus-type shovel placenta according to any one of claims 1 to 5, wherein the bottom surface of the shovel placenta is spherical, the upper surface of the shovel placenta is an inner arc surface, the arc of the circular arc teeth is 22.5 degrees, the pitch of the circular arc teeth is 30.42mm, the number of the circular arc teeth is 16, the outer ring diameter of the shovel placenta is 151mm, the thickness of the shovel placenta is 30mm, and the spherical surface diameter of the bottom surface of the shovel placenta is 316mm.

7. The torus-type shovel placenta according to claim 6, wherein the inner arcuate surface on the shovel placenta comprises a reinforcing rib.

Images