Brake device and sliding block abrasion sleeve

Abstract

The utility model provides a slide block wearing sleeve, an annular end face of the slide block wearing sleeve is provided with a wearing boundary surrounding a circle along the circumferential direction, the distance between the wearing boundary and the outer side edge of a ring body corresponding to the wearing boundary is equal, and the wearing boundary is used for quickly identifying the wearing limit. The utility model further provides a braking device, the braking device comprises a braking beam and the sliding block abrasion sleeve, the two ends of the braking beam are connected with brake head sliding blocks, the sliding block abrasion sleeve is arranged on the brake head sliding blocks in a sleeved mode, and the sliding block abrasion sleeve is used for being connected into the side frame sliding groove in a sliding mode. The sliding block abrasion sleeve has the advantages that the abrasion boundary is arranged on the annular end face, so that whether the sliding block abrasion sleeve is abraded to the limit or not can be quickly recognized, and whether replacement is needed or not can be judged conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of railway equipment parts, in particular to a braking device and a sliding block wear sleeve. Background Art

[0002] During the braking process of the railway freight car brake beam, friction is generated through the contact between the slider wear sleeve on the brake beam and the slide groove wear plate of the bogie side frame, causing wear on the friction surface of the slider wear sleeve. When the slider wear sleeve is worn to a certain extent, it will reduce the braking performance of the railway freight car, thereby affecting driving safety, so the slider wear sleeve needs to be replaced.

[0003] The existing slider wear sleeve is annular in structure (such as Figure 5 As shown), it is installed on the brake shoe support slider and works by contacting the side frame slide groove through the outer surface. For example, the Chinese utility model patent with publication number CN215706358U discloses a reinforced slider wear sleeve, wherein the main body forms an accommodation space for accommodating the brake beam brake shoe support slider, so that the main body can be sleeved on the outside of the brake beam brake shoe support slider; the upper surface and the lower surface of the main body respectively form an upper working surface and a lower working surface, and the upper working surface and the lower working surface both serve as sliding friction surfaces of the slider wear sleeve; the two side surfaces of the main body form non-working surfaces, each of which is provided with a groove, and a support plate is embedded in each of the grooves, and the two support plates are connected by a transversely arranged connecting piece, and the connecting piece is configured to connect the main body, the two support plates and the brake beam brake shoe support slider together.

[0004] The existing railway maintenance regulations generally stipulate that when the wear is greater than 3mm, the slider wear sleeve needs to be replaced. When replacing, the slider wear sleeve needs to be manually measured to check whether the wear reaches 3mm. If it reaches, the slider wear sleeve is removed and replaced. If it does not reach, it is not replaced. When replacing the slider wear sleeve, the bogie and brake beam need to be disassembled for replacement, which requires too much time, manpower and financial costs. In addition, during the installation of the slider wear sleeve, since the thickness difference between the upper and lower surfaces of the slider wear sleeve is only 1mm, it is not convenient to distinguish the upper and lower surfaces of the slider wear sleeve during installation, which easily causes the upper and lower surfaces of the slider wear sleeve to be installed upside down.

[0005] Therefore, it is necessary to study a braking device and a slider wear sleeve to solve the above problems or alleviate the impact of the above problems. Utility Model Content

[0006] On one hand, the utility model provides a slider wear sleeve, which is provided with a wear dividing line on the annular end surface to facilitate rapid identification of whether the slider wear sleeve has been worn to a limit, and to facilitate determination of whether replacement is required, so as to solve or alleviate the above-mentioned problem.

[0007] The wear sleeve of the slider of the utility model is an annular structure, and an installation space for matching and installing with the brake shoe support slider is formed inside the ring, and a first working surface and a second working surface for corresponding contact with the side frame slide groove are arranged outside the ring;

[0008] A wear dividing line is provided on the annular end surface of the slider wear sleeve and is circumferentially arranged, and the wear dividing line is equidistant from the outer edge of the corresponding ring body, and the wear dividing line is used to quickly identify when the wear limit has been reached.

[0009] In one embodiment, the wear boundary line is an arc-shaped protrusion, and the diameter of the arc is 1 mm.

[0010] In one embodiment, the distance between the wear dividing line and the corresponding outer edge of the ring body is 3 mm.

[0011] In one embodiment, the first working surface is located above the second working surface, the ring body thickness of the slider wear sleeve corresponding to the first working surface is 6 mm, and the ring body thickness of the slider wear sleeve corresponding to the second working surface is 7 mm.

[0012] In one embodiment, an installation identification portion corresponding to the first working surface or the second working surface is further provided on the annular end surface of the slider wear sleeve, and the installation identification portion is used to quickly distinguish between positive and negative installation.

[0013] In one embodiment, the installation identification portion is a vertically extending arc-shaped protrusion, and the diameter of the arc shape is 0.5-1.5 mm.

[0014] In one embodiment, the installation identification portion is provided on the annular end surface corresponding to the second working surface, and the installation identification portion vertically extends 3 to 4 mm from the inner side of the ring body to the outer side of the ring body.

[0015] In one embodiment, the first working surface and the second working surface of the slider wear sleeve are both provided with corresponding rivet holes penetrating the ring body, and the rivet holes are fixedly connected to the brake shoe support slider through rivets.

[0016] In one embodiment, the slider wear sleeve is an oil-containing polyamide product.

[0017] On the other hand, the utility model also provides a braking device, which includes a brake beam and a slider wear sleeve as described above, wherein both ends of the brake beam are connected to a brake shoe supporting slider, the slider wear sleeve is sleeved on the brake shoe supporting slider, and the slider wear sleeve is used for sliding connection in the side frame slide groove.

[0018] The wear sleeve of a slider provided by the utility model has at least the following beneficial effects compared with the prior art:

[0019] The wear sleeve of the slider of the utility model is provided with a wear dividing line on the annular end surface, so as to quickly identify whether the wear sleeve of the slider has been worn to a limit, and to judge whether it needs to be replaced, which can effectively reduce the time of manual measurement and inspection, reduce labor intensity, and improve work efficiency.

[0020] The brake device provided by the utility model also has the above-mentioned beneficial effects because it includes the above-mentioned slider wear sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the wear sleeve of the slider in the embodiment of the utility model;

[0023] Figure 2 It is a front view of the wear sleeve of the slider of the embodiment of the utility model;

[0024] Figure 3 It is a bottom view of the wear sleeve of the slider of the embodiment of the utility model;

[0025] Figure 4 It is a side view of the wear sleeve of the slider of the embodiment of the utility model;

[0026] Figure 5 It is a front view of a wear sleeve of a slider in the prior art;

[0027] Figure 6 It is a schematic diagram of the structural dimensions of the wear boundary line on the annular end face of the embodiment of the utility model;

[0028] Figure 7 It is a schematic diagram of the structural dimensions of a marking portion installed on the annular end surface of an embodiment of the utility model;

[0029] Figure 8 It is a three-view drawing of the detailed dimensions of the wear sleeve of the slider in the embodiment of the utility model;

[0030] Fig. 9 It is a structural schematic diagram of the braking device of an embodiment of the utility model.

[0031] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0032] Reference numerals:

[0033] 10-slider wear sleeve, 11-first working surface, 12-second working surface, 13-wear dividing line, 14-installation identification part, 15-rivet hole, 20-brake beam, 30-brake shoe support slider. DETAILED DESCRIPTION

[0034] The utility model will be further described below in conjunction with the accompanying drawings.

[0035] like Figures 1 to 4 , Figures 6 to 9 As shown, the slider wear sleeve 10 of the utility model is an annular structure, and an installation space for matching and installing with the brake shoe support slider 30 is formed inside the ring, and a first working surface 11 and a second working surface 12 for corresponding contact with the side frame slide groove are provided outside the ring;

[0036] A wear boundary line 13 is provided on the annular end surface of the slider wear sleeve 10 and is circumferentially arranged, and the wear boundary line 13 is equidistant from the outer edge of the corresponding ring body. The wear boundary line 13 is used to quickly identify when the wear limit has been reached.

[0037] Specifically, the overall shape of the slider wear sleeve 10 is an annular structure, and the design of this structure enables it to be tightly mounted on the brake shoe support slider 30 to ensure a stable connection between the two. A specific installation space is formed on the inner side of the ring body, and the size and shape of the installation space are carefully designed to achieve accurate matching installation with the brake shoe support slider 30. A first working surface 11 and a second working surface 12 are arranged at intervals on the outer side of the ring body. The arrangement of these two working surfaces is mainly to achieve corresponding contact with the side frame slide groove. During the braking process, friction occurs between these two working surfaces and the side frame slide groove, so as to effectively reduce the wear of the side frame slide groove and improve the service life of the entire braking system.

[0038] In addition, a wear dividing line 13 is specially designed on the annular end face of the slider wear sleeve 10, which is circumferentially encircled. The wear dividing line 13 can play a role in quickly identifying the wear limit. The position of the wear dividing line 13 is accurately calculated, and its distance from the outer edge of the corresponding ring body is equal. In this way, when the slider wear sleeve 10 is worn during use, the staff can quickly judge the wear degree of the slider wear sleeve 10 by observing the change in the distance between the wear dividing line 13 and the outer edge of the ring body, so as to facilitate timely replacement and ensure the normal operation of the brake system.

[0039] In general, the wear boundary line 13 is set on the annular end surface of the slider wear sleeve 10 to facilitate quick identification of whether the slider wear sleeve 10 has been worn to a limit, which is convenient for determining whether replacement is required, and can effectively reduce the time of manual measurement and inspection, reduce labor intensity, and improve work efficiency.

[0040] In an example, Figure 2 and Figure 6 As shown, the wear boundary line 13 is a circular arc convex, and the diameter of the circular arc is 1 mm.

[0041] Specifically, the transverse cross section of the wear boundary line 13 is in the shape of an arc and bulges outwardly in the direction of the annular end surface. The diameter of the arc is 1 mm, that is, the width of the wear boundary line 13 is 1 mm.

[0042] In an example, Figure 2 and Figure 6 As shown, the distance between the wear boundary line 13 and the corresponding outer edge of the ring body is 3 mm.

[0043] Specifically, the distance between the wear dividing line 13 and the corresponding outer edge of the ring body is 3mm, that is, the distance between the wear dividing line 13 and the corresponding first working surface 11 and the second working surface 12 is 3mm. Based on the wear replacement regulations of the slider wear sleeve 10, the slider wear sleeve 10 needs to be replaced when the wear is greater than 3mm, that is, when the slider wear sleeve 10 is worn to the wear dividing line 13, it means that its wear thickness has reached 3mm, and the slider wear sleeve 10 needs to be replaced. In this way, by checking the wear dividing line 13, it is possible to quickly determine whether the slider wear sleeve 10 has been worn to the limit and whether it needs to be replaced, thereby reducing the time for manual measurement and inspection, reducing labor intensity, and improving work efficiency.

[0044] In an example, Figure 2 and Figure 6 As shown, the first working surface 11 is located above the second working surface 12, the ring body thickness of the slider wear sleeve 10 corresponding to the first working surface 11 is 6 mm, and the ring body thickness of the slider wear sleeve 10 corresponding to the second working surface 12 is 7 mm.

[0045] Specifically, the first working surface 11 is the upper working surface in contact with the upper edge of the side frame slide groove, and the second working surface 12 is the lower working surface in contact with the lower edge of the side frame slide groove. The thickness of the ring body of the slider wear sleeve 10 corresponding to the first working surface 11 is 6 mm, and the thickness of the ring body of the slider wear sleeve 10 corresponding to the second working surface 12 is 7 mm, and the difference between the two is only 1 mm. And based on the width of the wear dividing line 13 and the distance design of the wear dividing line 13 from the outer edge of the corresponding ring body, it can be calculated that the distance between the wear dividing line 13 and the inner edge corresponding to the first working surface 11 is 2 mm, and the distance between the wear dividing line 13 and the inner edge corresponding to the second working surface 12 is 3 mm.

[0046] In an example, Figure 2 and Figure 7 As shown, the annular end surface of the slider wear sleeve 10 is also provided with an installation identification portion 14 corresponding to the first working surface 11 or the second working surface 12, and the installation identification portion 14 is used to quickly distinguish between positive and negative installation.

[0047] Specifically, since the difference in the thickness of the ring body corresponding to the first working surface 11 and the second working surface 12 of the slider wear sleeve 10 is only 1 mm, it is difficult to distinguish the first working surface 11 and the second working surface 12 of the slider wear sleeve 10 during installation, which may easily cause the slider wear sleeve 10 to be installed upside down. By providing an installation identification portion 14 at a position corresponding to one of the working surfaces on the annular end surface, the corresponding working surfaces can be intuitively and quickly distinguished by checking the installation identification portion 14, so as to facilitate correct installation and avoid reverse installation.

[0048] It should be noted that the installation identification portion 14 is provided at and only at a corresponding working surface on the annular end surface, and can be provided at the first working surface 11 or at the second working surface 12, but cannot be provided at two positions corresponding to the first working surface 11 and the second working surface 12 at the same time. Preferably, the installation identification portion 14 is provided at a position corresponding to the second working surface 12 on the annular end surface.

[0049] In an example, Figure 2 and Figure 7 As shown, the installation identification portion 14 is a vertically extending arc-shaped protrusion, and the diameter of the arc is 0.5-1.5 mm.

[0050] Specifically, the transverse cross section of the installation identification portion 14 is arc-shaped and extends and bulges in the vertical direction. The diameter of the arc is 0.5-1.5 mm, for example, 0.5 mm, 1.0 mm, 1.5 mm, that is, the width of the wear dividing line 13 is 0.5-1.5 mm.

[0051] Preferably, the diameter of the arc is 1 mm so as to match the wear boundary line 13 .

[0052] In an example, Figure 2 and Figure 7 As shown, the installation identification portion 14 is arranged on the annular end surface corresponding to the second working surface 12, and the installation identification portion 14 vertically extends 3 to 4 mm from the inner side of the ring body to the outer side of the ring body.

[0053] Specifically, the installation identification portion 14 is arranged at the lower part of the slider wear sleeve 10 and corresponds to the annular end surface position of the second working surface 12. The installation identification portion 14 extends vertically from the inner side of the slider wear sleeve 10 by 3 to 4 mm, for example, 3 mm, 3.5 mm, 4 mm, so that the lower end of the installation identification portion 14 partially overlaps with the wear dividing line 13, so as to facilitate the matching setting with the wear dividing line 13.

[0054] Preferably, the installation identification portion 14 vertically extends 3.5 mm from the inner side of the ring body to the outer side of the ring body.

[0055] In an example, Figure 1 and Figure 3As shown, the first working surface 11 and the second working surface 12 of the slider wear sleeve 10 are both provided with corresponding rivet holes 15 penetrating the ring body, and the rivet holes 15 are fixedly connected to the brake shoe support slider 30 through rivets.

[0056] Specifically, the ring bodies of the slider wear sleeve 10 corresponding to the first working surface 11 and the second working surface 12 are provided with penetrating rivet holes 15, so that the upper and lower parts of the slider wear sleeve 10 can be fixedly connected to the brake shoe support slider 30 by the rivets, so as to further improve the stability of the connection between the two.

[0057] In one example, the slider wear sleeve 10 is an oil-containing polyamide product, which can reduce wear when the slider wear sleeve 10 is in frictional contact with the side frame slide groove, thereby increasing the service life of the slider wear sleeve 10.

[0058] It should be noted that the slider wear sleeve 10 of the utility model can improve the ability to quickly distinguish between positive and negative installation and wear limit by changing the structure of the existing slider wear sleeve 10, and only requires adaptive modification of the injection mold, the overall style does not change significantly, and the modification is relatively simple.

[0059] For example, Figure 8 It is a preferably designed slider wear sleeve 10, and the corresponding processing dimensions have been marked in detail on the three views, and it can be processed and formed according to the drawings.

[0060] It should also be noted that the two annular end surfaces of the slider wear sleeve 10 can be provided with the above-mentioned wear dividing line 13 and installation identification portion 14.

[0061] like Fig. 9 As shown, the braking device provided by the utility model includes a brake beam 20 and the above-mentioned slider wear sleeve 10, both ends of the brake beam 20 are connected with a brake shoe supporting slider 30, the slider wear sleeve 10 is sleeved on the brake shoe supporting slider 30, and the slider wear sleeve 10 is used for sliding connection in the side frame slide groove.

[0062] Since the brake device of the present invention includes the above-mentioned slider wear sleeve 10, it also has the ability to quickly distinguish whether the slider wear sleeve 10 is installed forwardly or reversely and whether it has been worn to a limit.

[0063] In summary, the beneficial effects of the utility model include:

[0064] The utility model adds a wear demarcation line 13 to the annular end face of the slider wear sleeve 10, which can facilitate the staff to quickly distinguish whether the slider wear sleeve 10 has been worn to the limit and whether it needs to be replaced on site; and adds an installation identification part 14 to the annular end face of the slider wear sleeve 10, which can facilitate the staff to quickly distinguish the positive and negative installation when installing the slider wear sleeve 10 to prevent reverse installation; the slider wear sleeve 10 is made of oil-containing polyamide products and has less wear. In this way, the above technical means can reduce the time used for replacing the slider wear sleeve 10, improve maintenance efficiency, save maintenance costs, and can be achieved by adaptively modifying the existing injection mold. The overall model does not change significantly, and the modification is relatively simple.

[0065] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A slider wear sleeve, characterized in that: The slider wear sleeve is an annular structure, the inner ring of which forms an installation space for matching and installing the brake shoe support slider, and the outer ring of which is provided with a first working surface and a second working surface for correspondingly contacting the side frame slide groove; A wear dividing line is provided on the annular end surface of the slider wear sleeve and is circumferentially arranged, and the wear dividing line is equidistant from the outer edge of the corresponding ring body, and the wear dividing line is used to quickly identify when the wear limit has been reached.

2. The slider wear sleeve according to claim 1, characterized in that: The wear boundary line is an arc-shaped protrusion, and the diameter of the arc is 1 mm.

3. The slider wear sleeve according to claim 1, characterized in that: The distance between the wear dividing line and the corresponding outer edge of the ring body is 3 mm.

4. The slider wear sleeve according to claim 1, characterized in that: The first working surface is located above the second working surface, the ring body thickness of the slider wear sleeve corresponding to the first working surface is 6 mm, and the ring body thickness of the slider wear sleeve corresponding to the second working surface is 7 mm.

5. The slider wear sleeve according to claim 1, characterized in that: An installation identification portion corresponding to the first working surface or the second working surface is also provided on the annular end surface of the slider wear sleeve, and the installation identification portion is used to quickly distinguish between positive and negative installation.

6. The slider wear sleeve according to claim 5, characterized in that: The installation identification portion is a vertically extending arc-shaped protrusion, and the diameter of the arc shape is 0.5-1.5 mm.

7. The slider wear sleeve according to claim 6, characterized in that: The installation identification portion is arranged on the annular end surface corresponding to the second working surface, and the installation identification portion vertically extends 3 to 4 mm from the inner side of the ring body to the outer side of the ring body.

8. The slider wear sleeve according to claim 1, characterized in that: The first working surface and the second working surface of the slider wear sleeve are both provided with corresponding rivet holes penetrating the ring body, and the rivet holes are fixedly connected to the brake shoe support slider through rivets.

9. The slider wear sleeve according to claim 1, characterized in that: The sliding block wear sleeve is made of oil-containing polyamide.

10. A braking device, characterized in that: The braking device includes a brake beam and a slider wear sleeve as described in any one of claims 1 to 9, both ends of the brake beam are connected to brake shoe supporting sliders, the slider wear sleeve is arranged on the brake shoe supporting slider, and the slider wear sleeve is used for sliding connection in the side frame slide groove.

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