Brake beam strut and brake beam

Abstract

The utility model provides a brake beam strut and brake beam, the brake beam strut comprises a front section column body, a middle section column body and a tail section column body, the front end part of the front section column body is provided with a first connecting groove, the middle section column body is provided with a bushing hole, and the rear end part of the tail section column body is provided with a second connecting groove; a first clamping piece is arranged at the front end part of the middle-section column body, and the rear end part of the middle-section column body is rotationally connected with the front end part of the tail-section column body; a first clamping position, a second clamping position and a third clamping position are arranged at the rear end of the front-section column body in the first diameter direction, the second diameter direction and the third diameter direction of the front-section column body respectively and used for being connected with the first clamping piece in a clamped mode and limiting the middle-section column body to rotate around the axial direction of the middle-section column body. The brake beam support solves the problem that the manufacturing cost of the brake beam support is high.

Description

Technical Field

[0001] The utility model relates to the technical field of railway vehicles, in particular to a brake beam support and a brake beam. Background Art

[0002] The braking form of railway freight cars generally adopts a single-side brake shoe braking method. The braking device mainly includes brake beams, levers, brake shoe supports and other components. The brake beam is composed of a brake beam frame, a support and a brake shoe support. The function of the brake beam is to brake the running vehicle, reduce the vehicle speed or stop the vehicle; the support is inserted into the center of the brake beam frame through the groove at the front end of the support, and the rear end of the support is connected to the brake beam frame through bolts and support buckles.

[0003] At present, lever brakes are divided into two types: oblique levers and vertical levers. The angle of the brake beam support used by the oblique lever is generally 40°, and it is divided into left and right parts, namely the left brake beam and the right brake beam. The main reason for the existence of left and right brake beams is the left and right supports. Therefore, the same steering wheel equipped with an oblique lever brake beam currently needs to be equipped with two supports, namely the left and right supports. Therefore, two types of support molds need to be provided when producing the supports. The brake beam support angle used by the vertical lever is 90°. Although the vertical lever has only one support, the support of the oblique lever cannot be installed on the brake beam of the vertical lever, and the mold needs to be re-prepared, which increases the manufacturing cost. Utility Model Content

[0004] The main purpose of the utility model is to provide a brake beam support and a brake beam, so as to solve the problem of high manufacturing cost of the brake beam in the prior art.

[0005] The utility model provides a brake beam support, comprising a front section column, a middle section column and a tail section column, wherein the front end portion of the front section column is provided with a first connecting groove, the middle section column is provided with a bushing hole, and the rear end portion of the tail section column is provided with a second connecting groove; the front end portion of the middle section column is provided with a first clamping piece, and the rear end portion of the middle section column is rotatably connected with the front end portion of the tail section column; the rear end portion of the front section column is provided with a first clamping position, a second clamping position and a third clamping position along its first diameter direction, the second diameter direction and the third diameter direction, respectively, which are used to clamp with the first clamping piece and limit the middle section column from rotating around the axial direction of the middle section column.

[0006] Furthermore, the first clamping member is a first rectangular boss, and the first clamping position, the second clamping position and the third clamping position are respectively first rectangular grooves matching the rectangular boss.

[0007] Furthermore, the ratio of the length of the first clamping member, the width of the first clamping member and the diameter of the middle section of the column is (0.6-0.9):(0.2-0.5):1.

[0008] Further, the first clamping member is a second rectangular groove, and the first clamping position, the second clamping position and the third clamping position are second rectangular bosses matching the second rectangular groove respectively.

[0009] Furthermore, a first cylindrical protrusion is provided at the rear end of the middle section cylinder, and a first cylindrical groove for plugging with the first cylindrical protrusion is provided at the front end of the tail section cylinder.

[0010] Furthermore, the ratio of the diameter of the first cylindrical protrusion to the diameter of the middle cylinder is (0.3-0.6):1.

[0011] Furthermore, the included angle between the second diameter direction and the first diameter direction is 40 degrees, and the included angle between the second diameter direction and the third diameter direction is 40 degrees.

[0012] Furthermore, the first engaging position, the second engaging position and the third engaging position intersect at one point, and the intersection point is located on the axis of the front section of the column.

[0013] Furthermore, the middle section column and the tail section column are coaxially arranged, and the intersection point is located on the axis of the middle section column.

[0014] According to another aspect of the utility model, a brake beam is provided, comprising a brake beam frame consisting of a support rod, brake beam ends installed at both ends of the support rod and a bow rod, and a brake shoe support installed on each brake beam end, one end of the bow rod is installed on one of the brake beam ends, and the other end of the bow rod is installed on the other brake beam end, a brake beam support is supported between the middle part of the support rod and the bent part of the bow rod, the brake beam support is the above brake beam support, the first connecting groove cooperates with the bent part of the bow rod, and the second connecting groove cooperates with the middle part of the support rod.

[0015] By applying the technical solution of the utility model, the pillar is designed as a three-section split structure. By changing the clamping position connected to the first clamp, a left pillar that can be assembled to the oblique lever brake beam, a right pillar that can be assembled to the oblique lever brake beam, and a straight lever pillar that can be assembled to the vertical lever brake beam can be formed respectively. The multi-purpose structure unifies the left pillar, the right pillar and the straight lever pillar of the oblique lever into one pillar structure, reducing the number of supporting parts and the number of molds, reducing manufacturing costs, and the vertical lever and the oblique lever use the same pillar for easy management. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1It shows a schematic structural diagram of a brake beam support according to an embodiment of the utility model, in which the front section column and the middle section column are in a first connection state;

[0018] Figure 2 It shows a schematic structural diagram of a brake beam support according to an embodiment of the utility model, in which the front section column and the middle section column are in a second connection state;

[0019] Figure 3 It shows a schematic structural diagram of a brake beam support according to an embodiment of the utility model, in which the front section column and the middle section column are in a third connection state;

[0020] Figure 4 A schematic diagram of the structure of a brake beam support after decomposition according to an embodiment of the utility model is shown;

[0021] Figure 5 A schematic structural diagram of a front section of a brake beam support according to an embodiment of the utility model is shown;

[0022] Figure 6 A schematic structural diagram of a middle section column of a brake beam support according to an embodiment of the utility model is shown;

[0023] Figure 7 A schematic diagram showing the structure of the rear section of a brake beam support according to an embodiment of the utility model is shown;

[0024] Figure 8 A schematic structural diagram of a right brake beam according to an embodiment of the utility model is shown;

[0025] Fig. 9 A schematic structural diagram of a vertical lever brake beam according to an embodiment of the utility model is shown;

[0026] Fig.10 A structural schematic diagram of a left brake beam according to an embodiment of the utility model is shown.

[0027] The above drawings include the following reference numerals:

[0028] 1. front column; 11. first clamping position; 12. second clamping position; 13. third clamping position; 14. first connecting groove;

[0029] 2. middle cylinder; 21. first clamp; 22. first cylindrical protrusion; 23. bushing hole;

[0030] 3. Tail section column; 31. First cylindrical groove; 32. Second connecting groove.

[0031] 4. Support pole;

[0032] 5. Bow rod;

[0033] 6. Brake block support. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] As described in the background technology, the prior art has the problem of high manufacturing cost of brake beams. In order to solve the above problem, according to one aspect of the utility model, a brake beam support is provided, such as Figure 1-7 As shown, it includes: a front section column 1, a middle section column 2 and a tail section column 3, a first connecting groove 14 is arranged at the front end portion of the front section column 1, a bushing hole 23 is opened on the middle section column 2, and a second connecting groove 32 is arranged at the rear end portion of the tail section column 3; a first clamping piece 21 is arranged at the front end portion of the middle section column 2, and the rear end portion of the middle section column 2 is rotatably connected with the front end portion of the tail section column 3; a first clamping position 11, a second clamping position 12 and a third clamping position 13 are respectively arranged at the rear end portion of the front section column 1 along its first diameter direction, second diameter direction and third diameter direction, which are respectively used to clamp with the first clamping piece 21 and limit the middle section column 2 from rotating around the axial direction of the middle section column 2.

[0036] In order to reduce the manufacturing cost of the brake beam, the utility model provides a brake beam support, which is designed as a three-section split structure. By rotating the middle column 2 to change the clamping position connected to the first clamp 21, a left support that can be assembled to the oblique lever brake beam, a right support that can be assembled to the oblique lever brake beam, and a straight lever support that can be assembled to the vertical lever brake beam can be formed respectively. The multi-purpose structure unifies the left support, the right support and the straight lever support of the oblique lever into one support structure, reduces the number of supporting parts and the number of molds, reduces manufacturing costs, and the vertical lever and the oblique lever use the same support for easy management.

[0037] In some embodiments, Figure 4 and Figure 6 As shown, the first clamping member 21 is a first rectangular boss, and the first clamping position 11, the second clamping position 12 and the third clamping position 13 are first rectangular grooves matching the rectangular boss. The rectangular protrusion is arranged on the middle section column 2, and is clamped with the first rectangular groove on the front section column 1, so that the front section and the middle section can be connected and prevented from rotating along their respective axes.

[0038] In some embodiments, the ratio of the length of the first clamp 21, the width of the first clamp 21 and the diameter of the middle column 2 is (0.6~0.9):(0.2~0.5):1, so that the front column 1 and the middle column 2 have a higher connection strength, thereby improving the service life of the pillar.

[0039] Optionally, in some embodiments, the first clamping member 21 is a second rectangular groove, and the first clamping position 11, the second clamping position 12 and the third clamping position 13 are respectively second rectangular bosses matching the second rectangular groove. The rectangular groove is set on the middle section column 2, and the connection between the front section and the middle section can be achieved by clamping it with the rectangular boss on the front section column 1, and preventing the two from rotating along their respective axes.

[0040] In some embodiments, the rear end of the middle cylinder 2 is provided with a first cylindrical protrusion 22, and the front end of the tail cylinder 3 is provided with a first cylindrical groove 31 for plugging with the first cylindrical protrusion 22. Thus, the connection between the middle cylinder 2 and the tail cylinder can be realized through the first cylindrical protrusion 22 and the first cylindrical groove 31, and the middle cylinder 2 can be freely rotated during assembly to adjust the first clamping member 21 to engage with different clamping positions (the first clamping position 11, the second clamping position 12 or the third clamping position 13).

[0041] In some embodiments, the ratio of the diameter of the first cylindrical protrusion 22 to the diameter of the middle section cylinder 2 is (0.3-0.6):1, so that the middle section cylinder 2 and the tail section cylinder 3 have a higher connection strength.

[0042] Optionally, in some embodiments, a second cylindrical groove (not shown) is provided at the rear end of the middle cylinder 2, and a second cylindrical protrusion for plugging into the second cylindrical groove is provided at the front end of the tail cylinder 3. The middle cylinder 2 and the tail cylinder can be connected by the second cylindrical protrusion and the second cylindrical groove, and the middle cylinder 2 can be freely rotated during assembly.

[0043] In some embodiments, the ratio of the diameter of the second cylindrical groove to the diameter of the middle section cylinder 2 is (0.3-0.6):1, so that the middle section cylinder 2 and the tail section cylinder 3 have a higher connection strength.

[0044] In some embodiments, the angle between the second diameter direction and the first diameter direction is 40 degrees, and the angle between the second diameter direction and the third diameter direction is 40 degrees. Figure 4 and Figure 5 As shown, the first engaging position 11 is a 40° right support slot, which is used to form a right support (such as Figure 1 As shown), and can be further installed to form a right brake beam, such as Figure 8 The second engaging position 12 is a 90° straight lever support slot for engaging with the first engaging member 21 to form a straight lever support (such as a lever support) that can be assembled to the vertical brake beam. Figure 2 As shown), it can be further installed to form a vertical lever brake beam, such as Fig. 9The third engaging position 13 is a 40° left pillar slot for engaging with the first engaging member 21 to form a left pillar (such as) that can be assembled to the left brake beam. Figure 3 As shown), it can be further installed to form a left brake beam, such as Fig.10 As shown, the three support structures are suitable for brake beams commonly available in the existing market.

[0045] In some embodiments, the first engaging position 11 , the second engaging position 12 and the third engaging position 13 intersect at one point and the intersection point is located on the axis of the front column 1 , so that the front column 1 and the middle column 2 have higher connection stability and connection strength.

[0046] In some embodiments, the middle section column 2 and the tail section column 3 are coaxially arranged, and the intersection is located on the axis of the middle section column 2. The front section column 1, the middle section column 2 and the tail section column 3 are coaxially arranged so that there is a higher connection stability and connection strength between the three.

[0047] According to another aspect of the utility model, a brake beam is provided, such as Figure 8-10 As shown, it includes a brake beam frame consisting of a support rod 4, brake beam ends and a bow rod 5 installed at both ends of the support rod 4, and a brake shoe support 6 installed on each brake beam end. One end of the bow rod 5 is installed on one of the brake beam ends, and the other end of the bow rod 5 is installed on the other brake beam end. A brake beam support is supported between the middle part of the support rod 4 and the bent part of the bow rod 5. The brake beam support is the above brake beam support. The first connecting groove 14 cooperates with the bent part of the bow rod 5, and the second connecting groove 32 cooperates with the middle part of the support rod 4.

[0048] Specifically, when assembling the brake beam, the brake beam support can be assembled first. The specific process is as follows: first assemble the middle column 2 and the tail column 3, and then rotate the middle column 2 to align and connect the first clamping member 21 with one of the first clamping position 11, the second clamping position 12 and the third clamping position 13, and complete the corresponding right support, straight lever support or left support, such as Figure 1-3 After the brake beam support is assembled, the first connecting groove 14 is connected with the bent portion of the bow rod 5, and the second connecting groove 32 is connected with the middle portion of the support rod 4 to assemble the right brake beam, the vertical lever brake beam or the left brake beam, such as Figure 8-10 .

[0049] In some specific embodiments, the first connecting groove 14 and the second connecting groove 32 are both U-shaped grooves. The brake beam support is inserted into the bending part of the bow rod 5 through the U-shaped groove on the front column 1, and the rear column 3 is inserted into the middle part of the support rod 4 through the U-shaped groove.

[0050] In some specific embodiments, the tail section column 3 and the strut 4 are further connected and reinforced by bolts and clips.

[0051] The present application is further described in detail below in conjunction with specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed in the present application.

[0052] Example 1

[0053] Brake beam support structure Figure 1-7 As shown, it includes a front section cylinder 1, a middle section cylinder 2 and a tail section cylinder 3, the front end of the front section cylinder 1 is provided with a first connecting groove 14, the middle section cylinder 2 is provided with a bushing hole 23, and the rear end of the tail section cylinder 3 is provided with a second connecting groove 32; the front end of the middle section cylinder 2 is provided with a first clamping piece 21, and the rear end of the middle section cylinder 2 is rotatably connected with the front end of the tail section cylinder 3; the rear end of the front section cylinder 1 is provided with a first clamping position 11, a second clamping position 12 and a third clamping position 13 along its first diameter direction, the second diameter direction and the third diameter direction, respectively, which are used to clamp with the first clamping piece 21 and limit the middle section cylinder 2 from rotating around the axial direction of the middle section cylinder 2;

[0054] Among them, the first clamping member 21 is a first rectangular boss, and the first clamping position 11, the second clamping position 12 and the third clamping position 13 are respectively first rectangular grooves matching the rectangular boss; the ratio of the length of the first clamping member 21, the width of the first clamping member 21 and the diameter of the middle section cylinder 2 is 0.7:0.4:1; the rear end of the middle section cylinder 2 is provided with a first cylindrical protrusion 22, and the front end of the tail section cylinder 3 is provided with a first cylindrical groove 31 for plugging with the first cylindrical protrusion 22; the ratio of the diameter of the first cylindrical protrusion 22 to the diameter of the middle section cylinder 2 is 0.4:1; the angle between the second diameter direction and the first diameter direction is 40 degrees, and the angle between the second diameter direction and the third diameter direction is 40 degrees; the first clamping position 11, the second clamping position 12 and the third clamping position 13 intersect at one point and the intersection point is located on the axis of the front section cylinder 1; the middle section cylinder 2 and the tail section cylinder 3 are coaxially arranged, and the intersection point is located on the axis of the middle section cylinder 2;

[0055] Among them, the material of the brake beam support is ductile iron, and the preparation steps of the material of the brake beam support are as follows:

[0056] 1) 500 kg of ductile iron material is placed in a smelting process to obtain molten iron, and the smelting outlet temperature is controlled to be 1480°C.

[0057] 2) Using ladle bottom spheroidization, 8kg spheroidizer and 6kg inoculant are placed in the ladle in sequence, and then covered with a layer of 1kg K-34# slag collector (Qingdao Fusai Ke Casting Materials Co., Ltd.), and molten iron is poured into the ladle for spheroidization and the first inoculation.

[0058] 3) After the spheroidization treatment and the first inoculation are completed, the slag is removed. After the slag removal, 1 kg of inoculant is added for the second inoculation to obtain the inoculated molten iron.

[0059] 3) After the second inoculation, the temperature of the molten iron is cooled to 1400° C. before casting; wherein, coated sand is used to prepare a Y-type test block casting mold, and the floating sand in the sand mold is purged before casting.

[0060] 4) The sand dropping time is controlled to be 1.5 hours at 15°C to obtain ductile iron in a Y-type test block mold.

[0061] Among them, the element composition and content (mass percentage) of the ductile iron material are shown in Table 1, and the balance is iron and inevitable impurities; the element composition and content (mass percentage) of the spheroidizing agent used are shown in Table 2, and the balance is and inevitable impurities; the element composition and content (mass percentage) of the inoculant used are shown in Table 3, and the balance is iron and inevitable impurities.

[0062] Table 1. Element composition and content of ductile iron materials

[0063] Examples C(％) Si(%) Mn(%) P(％) S(％) Cu(%) Example 1 3.58 2.63 0.31 0.027 0.010 0.19

[0064] Table 2. Element composition and content of spheroidizing agent

[0065] Examples C(％) RE(%) Mg(%) Si(%) Ca(%) Al(％) Ti(%) Example 1 0.065 2.70 5.20 38.0 3.50 0.81 0.025

[0066] Table 3. Element composition and content of inoculant

[0067] Examples C(％) Si(%) Mn(%) P(％) S(％) Cr(％) Al(％) Example 1 0.20 72.4 0.45 0.021 0.011 0.18 0.39

[0068] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A brake beam support, characterized in that: The invention comprises a front section column (1), a middle section column (2) and a tail section column (3); the front end of the front section column (1) is provided with a first connecting groove (14), the middle section column (2) is provided with a bushing hole (23), and the rear end of the tail section column (3) is provided with a second connecting groove (32); the front end of the middle section column (2) is provided with a first clamping piece (21), and the rear end of the middle section column (2) is rotatably connected with the front end of the tail section column (3); the rear end of the front section column (1) is provided with a first clamping position (11), a second clamping position (12) and a third clamping position (13) along its first diameter direction, second diameter direction and third diameter direction, respectively, for clamping with the first clamping piece (21) and limiting the rotation of the middle section column (2) around the axial direction of the middle section column (2).

2. The brake beam support according to claim 1, characterized in that: The first clamping member (21) is a first rectangular boss, and the first clamping position (11), the second clamping position (12) and the third clamping position (13) are respectively first rectangular grooves matching the rectangular boss.

3. The brake beam support according to claim 2, characterized in that: The ratio of the length of the first clamping member, the width of the first clamping member and the diameter of the middle section cylinder is (0.6-0.9):(0.2-0.5):

1.

4. The brake beam support according to claim 1, characterized in that: The first clamping member is a second rectangular groove, and the first clamping position (11), the second clamping position (12) and the third clamping position (13) are respectively second rectangular bosses matching the second rectangular groove.

5. The brake beam support according to claim 1, characterized in that: A first cylindrical protrusion (22) is provided at the rear end of the middle section cylinder (2), and a first cylindrical groove (31) for plugging with the first cylindrical protrusion (22) is provided at the front end of the tail section cylinder (3).

6. The brake beam support according to claim 5, characterized in that: The ratio of the diameter of the first cylindrical protrusion (22) to the diameter of the middle section cylinder (2) is (0.3-0.6):

1.

7. The brake beam support according to claim 1, characterized in that: The included angle between the second diameter direction and the first diameter direction is 40 degrees, and the included angle between the second diameter direction and the third diameter direction is 40 degrees.

8. The brake beam support according to any one of claims 1 to 7, characterized in that The first clamping position (11), the second clamping position (12) and the third clamping position (13) intersect at one point, and the intersection point is located on the axis of the front column (1).

9. The brake beam support according to claim 8, characterized in that The middle section column (2) and the tail section column (3) are coaxially arranged, and the intersection point is located on the axis of the middle section column.

10. A brake beam, comprising a brake beam frame consisting of a support rod (4), brake beam ends mounted at both ends of the support rod (4) and a bow rod (5), and a brake shoe support (6) mounted on each of the brake beam ends, one end of the bow rod (5) being mounted on one of the brake beam ends, and the other end of the bow rod (5) being mounted on the other brake beam end, a brake beam support is supported between the middle portion of the support rod (4) and the bent portion of the bow rod, characterized in that: The brake beam support is the brake beam support according to any one of claims 1 to 9, the first connecting groove (14) cooperates with the bending portion of the bow rod, and the second connecting groove (32) cooperates with the middle portion of the support rod (4).

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