Brake shoe with attaching property

Abstract

The invention relates to a brake shoe with a follow-up property. The brake shoe structurally comprises a shoe seat and a shoe body, the shoe seat is an E-shaped structural body, round through holes with opposite orifices are formed in the upper flat edge and the lower flat edge of the E-shaped structural body respectively, a transverse shaft hole is formed in a middle protruding part of the E-shaped structural body, and the shaft hole is used for being connected with a brake shoe pin shaft of the brake shoe in an inserted mode; according to the shoe body, an upper connecting lug and a lower connecting lug which extend outwards are arranged on the back face of a plate-shaped base body. The upper flat edge of the shoe seat is inserted between the pair of connecting lugs at the upper part and is hinged with the inserted connecting lugs through a vertical shaft; the lower flat edge of the shoe seat is inserted between the pair of connecting lugs at the lower part and is hinged with the inserted connecting lugs through another vertical shaft; a friction plate is attached to the outer end face of the shoe body. The problem that the service life of the brake shoe is shortened due to eccentric wear of the brake disc is solved, and the use safety of large equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to a brake component of an electromagnetic brake, in particular to a brake shoe with attachment. Background Art

[0002] On some large equipment equipped with brake discs with larger diameters, one problem faced by the brakes that work with the brake discs to achieve braking is that the service life of the brake shoes installed on the brakes is generally lower than the design life, and is also much lower than the service life of the brake shoes in the brakes configured on other ordinary equipment. The reason is that the brake disc will swing when it rotates, causing eccentric wear on the brake shoes on the brake. However, due to the reasons of machining accuracy and installation and debugging, it is difficult to ensure that the braking surface of the brake disc is absolutely straight, resulting in a slight or small swing of the brake disc, and this swing becomes more obvious as the diameter of the brake disc increases. When braking a brake disc with a small swing, the brake shoes on the brake will inevitably wear eccentrically, thereby reducing the service life of the brake shoes. This situation has always existed and has not been effectively solved at present. Summary of the invention

[0003] The purpose of the present invention is to provide a brake shoe with attachment to solve the problem of reduced service life of the brake shoe caused by eccentric wear of the brake disc.

[0004] Purpose of the present invention is achieved in that: A brake shoe with attachment, comprising a shoe seat and a shoe body; the shoe seat is an E-shaped structure, and circular through holes with opposite openings are respectively opened on the upper flat edge and the lower flat edge of the E-shaped structure, and a transverse axial hole is opened on the middle convex part of the E-shaped structure, and the axial hole is used for plugging and connecting the brake shoe pin of the brake shoe; the shoe body is provided with upper and lower connecting ears extending outward on the rear back side of the plate-like base; the upper flat edge of the shoe seat is plugged between a pair of connecting ears at the upper part, and is hinged to the plugged connecting ears through a vertical axis; the lower flat edge of the shoe seat is plugged between a pair of connecting ears at the lower part, and is hinged to the plugged connecting ears through another vertical axis; a friction plate is attached to the outer end surface of the shoe body.

[0005] Furthermore, the centers of the upper and lower circular perforations on the shoe seat are on a straight line.

[0006] Furthermore, the axis lines of the upper and lower vertical axes are in a straight line.

[0007] Furthermore, the diameters of the connection holes on the upper and lower pairs of connection ears on the shoe body are the same.

[0008] The present invention decomposes the brake shoe into a two-body structure of a shoe seat and a shoe body, and hinges the shoe seat and the shoe body through two vertical axes, while the brake shoe and the brake arm of the brake are hinged through a pin shaft. In this way, a connection mode of a cross-axis universal joint is formed, so that the shoe body can produce deflection amounts in all directions relative to the shoe seat. When the brake is applied, the shoe body can move with the deflection of the brake disc, so that the braking surface of the brake shoe can be better attached to the disc surface of the brake disc for braking, thereby avoiding eccentric wear of the brake disc on the brake shoe, and completely solving the problem of reduced service life of the brake shoe caused by eccentric wear of the brake disc, which not only ensures the normal operation of the brake shoe and the brake, but also avoids the occurrence of brake failure accidents caused by the eccentric wear of the brake disc, thereby ensuring the safe use of large equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the brake shoe of the present invention.

[0010] Figure 2 yes Figure 1 AA section view.

[0011] Figure 3 The present invention is a schematic structural diagram of an arm disc brake using the brake shoe of the present invention.

[0012] Figure 4 yes Figure 3 Side view of the arm disc brake shown.

[0013] In the figure: 1, electromagnet, 2, adjusting nut, 3, adjusting screw, 4, right brake arm, 7, brake shoe pin, 8, base, 9, lower hinge shaft, 10, left brake arm, 11, brake spring, 12, spring pressure plate, 13, spring box, 14, upper hinge shaft, 15, brake release push rod, 16, electromagnetic push rod, 18, brake disc, 23, friction plate, 33, vertical axis, 34, shoe seat, 35, shoe body, 36, friction plate, 37, shaft hole. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] like Figure 1 As shown, the brake shoe of the present invention is divided into two components: a shoe body 35 and a shoe seat 34 .

[0016] Figure 1In the embodiment, the shoe seat 34 is an E-shaped structure, that is, an upper flat edge and a lower flat edge are provided on a vertical body, and a middle convex portion is provided in the middle. Circular perforations are respectively provided on the upper flat edge and the lower flat edge of the E-shaped structure of the shoe seat 34, and the centers of the upper and lower circular perforations are preferably on a straight line. A transverse shaft hole 37 is provided on the middle convex portion of the shoe seat 34, and the brake shoe can be hinged to the brake arm of the brake by inserting the brake shoe pin shaft.

[0017] like Figure 1 , Figure 2 As shown, the shoe body 35 is provided with two pairs of upper and lower connecting ears extending outward on the back of the plate-like base. The apertures of the connecting holes on the upper and lower pairs of connecting ears are preferably the same. The upper flat edge of the shoe seat 34 is inserted between the pair of connecting ears at the upper part, and is hinged to the two connecting ears through a vertical axis 33. The lower flat edge of the shoe seat 34 is inserted between the other pair of connecting ears at the lower part, and is hinged to the two connecting ears through another vertical axis 33. The diameters of the two vertical axes 33 connecting the shoe seat and the shoe body are the same. The axis center lines of the two vertical axes 33 are on a straight line, and are not on a vertical plane with the axis center line of the shaft hole 37 on the middle raised part of the shoe seat 34, thereby forming a universal joint structure to facilitate the small swing of the shoe body 35 in all directions. A friction plate 23 is attached to the outer end surface of the shoe body 35 as the braking surface of the brake shoe to clamp the brake disc of the equipment row to achieve working braking.

[0018] When the brake is applied, the brake disc has a small deflection on its surface, and with the help of the deflection force of the brake disc, the shoe body 35 can produce an accompanying deflection that is basically consistent with the deflection of the brake disc, thereby allowing the shoe body to maintain contact with the brake disc surface, thereby avoiding eccentric wear of the brake shoe caused by the deflection of the brake disc.

[0019] Figure 3 , Figure 4 The specific structure of the arm disc brake equipped with the brake shoe of the present invention is given.

[0020] like Figure 3 , Figure 4As shown, this arm-disc brake has a left brake arm 10 and a right brake arm 4 hinged on a base 8, and a brake shoe consisting of a shoe seat 34 and a shoe body 35 is hinged on each brake arm through a brake shoe pin 7. The two brake shoes are arranged on both sides of the brake disc of the equipment and are located near the edge of the brake disc. A brake mechanism and a brake release mechanism are also connected between the two brake arms of the brake. The brake mechanism has a spring box 13 connected between the two brake arms 4 and 10, a brake spring 11 is arranged in the spring box 13, a spring pressure plate 12 is pressed at one end of the brake spring 11, one end of the adjusting screw 3 is fixedly connected to the spring pressure plate 13, and the other end of the adjusting screw 3 passes through the brake spring 11 and then passes out from the right brake arm 4, and an adjusting nut 2 is screwed on the extended end of the adjusting screw 3. The brake release mechanism includes an electromagnet 1 and a brake release push rod 15. The electromagnet 1 is fixed on the top platform of the right brake arm 4 , and the brake release push rod 15 is transversely fixedly arranged on the upper end of the left brake arm 4 and abuts against the electromagnetic push rod 16 of the electromagnet 1 .

[0021] Of course, the brake shoe of the present invention can also be installed on other brakes that apply braking force to a brake disc.

Claims

1. A brake shoe with attachment, characterized in that: It comprises a shoe seat and a shoe body; the shoe seat is an E-shaped structure, and circular through holes with opposite openings are respectively opened on the upper flat edge and the lower flat edge of the E-shaped structure, and a transverse axial hole is opened on the middle raised part of the E-shaped structure, and the axial hole is used for plugging and connecting the brake shoe pin of the brake shoe; the shoe body is provided with upper and lower connecting ears extending outward on the rear back side of the plate-like base; the upper flat edge of the shoe seat is plugged between a pair of connecting ears at the upper part, and is hinged to the plugged connecting ears through a vertical axis; the lower flat edge of the shoe seat is plugged between a pair of connecting ears at the lower part, and is hinged to the plugged connecting ears through another vertical axis; a friction plate is attached to the outer end surface of the shoe body.

2. The brake shoe with add-on properties according to claim 1, characterized in that: The centers of the upper and lower circular perforations on the shoe seat are on a straight line.

3. The brake shoe with add-on properties according to claim 2, characterized in that: The center lines of the upper and lower vertical axes are in a straight line.

4. The brake shoe with add-on properties according to claim 1, characterized in that: The hole diameters of the connection holes on the upper and lower pairs of connection ears on the shoe body are the same.

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