Hinge connection structure for band-type brake system

Abstract

The utility model belongs to the field of assembly, and provides a hinged connection structure for a band-type brake system, which comprises a reference seat arranged at the bottom end of a rack, and a band-type brake oil cylinder movably connected to the reference seat; the band-type brake pull rod seat is arranged at the top end of the rack, the band-type brake hinge lug is connected to the end, away from the band-type brake oil cylinder, of the band-type brake pull rod and movably stretches into the band-type brake pull rod seat, a radial spherical plain bearing is installed in the band-type brake hinge lug, and a locking piece is movably arranged in the band-type brake pull rod seat and penetrates through the radial spherical plain bearing. Compared with the prior art, the band-type brake device has the advantages that the band-type brake hinge lug is additionally arranged between the band-type brake pull rod seat and the band-type brake pull rod, and the allowance is adjusted through the radial spherical plain bearing in the band-type brake hinge lug; meanwhile, the radial spherical plain bearing not only can bear large radial and axial loads, but also can be self-lubricated, the requirement for extra lubricating oil is reduced, the maintenance cost is reduced, and the service life of the band-type brake pull rod and the service life of the band-type brake oil cylinder are prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of assembly, and particularly relates to a hinge connection structure for a brake system. Background Art

[0002] With the rapid development of technology, people have higher and higher requirements for quality, which makes the accuracy of device assembly particularly important.

[0003] In the traditional brake system, the brake pull rod is usually directly fixed to the brake pull rod seat through a pin. However, in actual applications, due to the possible non - concentricity of the positions of the brake pull rod seats, there is a lack of adjustment margin during the assembly process. As a result, when the oil cylinder is running, the brake pull rod is easily subjected to shear force and breaks, affecting the stability and safety of the system and increasing the maintenance cost. Summary of the Utility Model

[0004] Aiming at the above - mentioned deficiencies existing in the prior art, the technical problem to be solved by the utility model is to provide a hinge connection structure for a brake system.

[0005] The technical solution adopted by the utility model to solve its technical problem is to provide a hinge connection structure for a brake system, which is used for assembling a brake oil cylinder with a brake pull rod, and includes: a reference seat arranged at the bottom end of the frame, and the brake oil cylinder is movably connected to the reference seat;

[0006] A brake pull rod seat and a brake hinge ear, the brake pull rod seat is arranged at the top end of the frame, the brake hinge ear is connected to the end of the brake pull rod far from the brake oil cylinder and movably extends into the brake pull rod seat, a spherical plain bearing is installed in the brake hinge ear, and a locking member is movably arranged in the brake pull rod seat, and the locking member penetrates through the spherical plain bearing to connect the brake hinge ear in the brake pull rod seat;

[0007] The locking member can adjust its height position in the brake pull rod seat by relying on the spherical plain bearing when the brake oil cylinder is installed.

[0008] In the above - mentioned hinge connection structure for a brake system, a first extension part and a second extension part are symmetrically arranged on the brake pull rod seat, and a guiding cavity is formed jointly by the first extension part and the second extension part, and the brake hinge ear movably extends into the guiding cavity.

[0009] In the above - mentioned hinge connection structure for a brake system, a connecting block is formed at the bottom of the brake hinge ear, a threaded hole is arranged in the connecting block, a threaded shaft is formed at the end of the brake pull rod far from the brake oil cylinder, and the threaded shaft is thread - connected in the threaded hole.

[0010] In the above-mentioned articulated connection structure for a brake system, the locking member is a connecting pin shaft. Connecting holes are provided in both the first extension part and the second extension part, and the connecting pin shaft passes through the connecting holes and the spherical plain bearing.

[0011] In the above-mentioned articulated connection structure for a brake system, the inner diameter of the connecting hole is larger than the diameter of the connecting pin shaft.

[0012] In the above-mentioned articulated connection structure for a brake system, an opening groove and a fixing member are formed on the brake hinge ear. The opening groove communicates with the threaded hole, and when the threaded shaft is threadedly connected to the threaded hole, the fixing member can pass through the opening groove and lock the brake pull rod in the brake hinge ear.

[0013] In the above-mentioned articulated connection structure for a brake system, relief arc grooves are formed on both side walls of the brake hinge ear close to the guiding cavity.

[0014] Compared with the prior art, the advantages of the present utility model are that a brake hinge ear is added between the brake pull rod seat and the brake pull rod, and the spherical plain bearing inside the brake hinge ear is used to self-adjust the margin, solving the problem caused by non-concentricity. At the same time, the spherical plain bearing can not only bear large radial and axial loads, but also self-lubricate, reducing the need for additional lubricating oil, lowering the maintenance cost, and extending the service life of the brake pull rod and the brake oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of the present application;

[0016] Figure 2 is Figure 1 the enlarged view at A in

[0017] Figure 3 is Figure 2 the left view of

[0018] Figure 4 is Figure 3 the sectional view of

[0019] Figure 5 is the structural schematic diagram of the brake hinge ear.

[0020] In the figure, 1. Brake pull rod; 10. Threaded shaft;

[0021] 2. Brake oil cylinder;

[0022] 3. Reference seat;

[0023] 4. Brake pull rod seat; 40. Locking piece; 41. First extension part; 42. Second extension part; 430. Guide cavity; 431. Connecting hole;

[0024] 5. Brake hinge ear; 50. Spherical plain bearing; 51. Connecting block; 510. Threaded hole; 52. Open slot; 53. Fixing piece; 54. Yielding arc-shaped groove. Detailed implementation manner

[0025] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0026] As Figures 1 to 5 shown, an articulated connection structure for a brake system of the present invention is used to assemble a brake cylinder 2 with a brake pull rod 1, and includes: a reference seat 3, which is arranged at the bottom end of the frame, and the brake cylinder 2 is movably connected to the reference seat 3; a brake pull rod seat 4 and a brake hinge ear 5, the brake pull rod seat 4 is arranged at the top end of the frame, the brake hinge ear 5 is connected to the end of the brake pull rod 1 far from the brake cylinder 2 and movably extends into the brake pull rod seat 4, a spherical plain bearing 50 is installed in the brake hinge ear 5, and a locking piece 40 is movably arranged in the brake pull rod seat 4, and the locking piece 40 penetrates through the spherical plain bearing 50 to connect the brake hinge ear 5 in the brake pull rod seat 4; the locking piece 40 can adjust its height position in the brake pull rod seat 4 by relying on the spherical plain bearing 50 when the brake cylinder 2 is installed.

[0027] This solution is mainly to achieve the stable installation of the brake cylinder 2. Specifically, as Figures 1 to 5 shown, compared with the traditional fixing method of directly using a pin shaft for the brake pull rod 1 and the brake pull rod seat 4, this structure adds a brake hinge ear 5 between the brake pull rod seat 4 and the brake pull rod 1. Through the spherical plain bearing 50 added inside the brake hinge ear 5, combined with the movable connection between the locking piece 40 for the brake pull rod 1 and the brake pull rod seat 4, during the assembly process of the brake cylinder 2, the height position of the locking piece 40 relative to the brake pull rod seat 4 can be adjusted by relying on the self-adjusting margin function of the spherical plain bearing 50, thereby effectively avoiding the fracture phenomenon of the brake pull rod 1 due to shear force during the movement of the brake cylinder 2. Not only that, this spherical plain bearing 50 can withstand large radial and axial loads, and has a self-lubricating effect, reducing the demand for additional lubricating oil, reducing the maintenance cost, and extending the service life of the brake pull rod 1 and the brake cylinder 2.

[0028] It should be added that the spherical plain bearing 50 is a spherical sliding bearing, mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. Spherical plain bearings are generally used for oscillating motions (i.e., angular motions) at relatively low speeds. Since the sliding surface is spherical, they can also perform tilting motions (i.e., self-aligning motions) within a certain angle range. When the concentricity between the supporting shaft and the bore of the housing is relatively large, they can still work properly and can rotate and swing at any angle during motion. Moreover, the spherical plain bearing 50 has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, and good lubrication.

[0029] First extension part 41 and second extension part 42 are symmetrically arranged on the brake pull rod seat 4. A guiding cavity 430 is jointly formed by the first extension part 41 and the second extension part 42, and the brake hinge ear 5 is movably inserted into the guiding cavity 430.

[0030] As Figures 3 to 4 shown, the guiding cavity 430 jointly formed by the first extension part 41 and the second extension part 42 plays a certain guiding and limiting role in the installation of the brake hinge ear 5, ensuring the smoothness and stability during the connection and fixation between the two. Also, because the guiding cavity 430 limits the installation position of the brake hinge ear 5, workers can smoothly pass the locking part 40 through the first extension part 41, the spherical plain bearing 50, and the second extension part 42 in sequence to realize the movable connection between the brake hinge ear 5 and the brake pull rod seat 4.

[0031] Furthermore, as Figures 3 to 4 shown, the locking part 40 in this solution is a connecting pin shaft. Connecting holes 431 are provided in both the first extension part 41 and the second extension part 42. When the above-mentioned brake hinge ear 5 is inserted into the guiding cavity 430, the connecting pin shaft can pass through the connecting holes 431 and the spherical plain bearing 50, and then connect the brake hinge ear 5 in the brake pull rod seat 4. The overall operation is simple, the installation is convenient and fast, and it also provides great convenience for subsequent maintenance and replacement.

[0032] Preferably, the inner diameter of the connecting hole 431 in this solution is larger than the diameter of the connecting pin shaft (not shown in the figure), and the unilateral allowance is preferably 1.5 mm. Combining with the characteristics of the above-mentioned spherical plain bearing 50, when the brake cylinder 2 is assembled, the spherical plain bearing 50 can be used to autonomously adjust the position of the locking part 40 to ensure that there is enough space for the brake pull rod 1 to be connected to the brake pull rod seat 4, and at the same time, it effectively prevents the brake pull rod 1 from breaking due to insufficient adjustment allowance during the movement of the brake cylinder 2.

[0033] A connecting block 51 is formed at the bottom of the brake hinge ear 5. A threaded hole 510 is provided in the connecting block 51. A threaded shaft 10 is formed at the end of the brake pull rod 1 away from the brake cylinder 2, and the threaded shaft 10 is threadedly connected in the threaded hole 510.

[0034] As Figures 4 to 5 shown, for the connection mode between the brake pull rod 1 and the brake hinge ear 5, this solution utilizes the threaded hole 510 formed in the connection block 51 to be in threaded fit with the threaded shaft 10 at the end of the brake pull rod 1, so as to realize the installation connection between the two. The operation is simple, and the installation and disassembly are convenient and fast, bringing convenience to the maintenance and replacement of workers.

[0035] An opening groove 52 and a fixing member 53 are formed on the brake hinge ear 5. The opening groove 52 communicates with the threaded hole 510, and when the threaded shaft 10 is threadedly connected to the threaded hole 510, the fixing member 53 can penetrate through the opening groove 52 and lock the brake pull rod 1 in the brake hinge ear 5.

[0036] As Figures 4 to 5 shown, the opening groove 52 on the brake hinge ear 5 divides the end part of the connection block 51 close to the threaded shaft 10 into two parts. By using this opening design method, it can effectively ensure that the threaded shaft 10 smoothly extends into the threaded hole 510 and is in threaded fit with it, improving the fluency and adaptability during installation and avoiding jamming during the installation process. Also, when the brake pull rod 1 is screwed into the brake hinge ear 5, the fixing member 53 applies a locking force to the opening groove 52, effectively ensuring the stability when the brake pull rod 1 is connected to the brake hinge ear 5. It should be noted that the fixing member 53 in this solution can be replaced by other connecting components such as bolts and screws.

[0037] Preferably, relief arc-shaped grooves 54 are formed on both side walls of the brake hinge ear 5 close to the guiding cavity 430. The relief arc-shaped grooves 54 can effectively prevent jamming or even collision between the brake hinge ear 5 and the above-mentioned brake pull rod seat 4, resulting in damage to components, when the brake cylinder 2 assembles and adjusts the allowance of the brake pull rod 1.

[0038] It should be noted that the structure of the reference seat 3 and the brake pull rod seat 4 in this solution is the same. Since the overall weight of the brake cylinder 2 is relatively large, the single-sided (i.e., the end of the brake pull rod 1 far from the brake cylinder 2) adjustment method brings convenience to the operation of workers.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, in the present utility model, descriptions such as "first", "second", "one", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

Claims

1. An articulated connection structure for a brake system, used for assembling a brake cylinder with a brake pull rod, characterized in that, Including: A reference seat is arranged at the bottom end of the frame, and the brake cylinder is movably connected to the reference seat; A brake pull rod seat and a brake hinge ear, the brake pull rod seat is arranged at the top end of the frame, the brake hinge ear is connected to the end of the brake pull rod far from the brake cylinder and movably extends into the brake pull rod seat, a spherical plain bearing is installed in the brake hinge ear, and a locking member is movably arranged in the brake pull rod seat, and the locking member penetrates through the spherical plain bearing to connect the brake hinge ear in the brake pull rod seat; When the brake cylinder is installed, the locking member can adjust its height position in the brake pull rod seat by relying on the spherical plain bearing.

2. The articulated connection structure for a brake system according to claim 1, characterized in that, The brake pull rod seat is symmetrically provided with a first extension part and a second extension part, and the first extension part and the second extension part jointly form a guiding cavity, and the brake hinge ear movably extends into the guiding cavity.

3. The articulated connection structure for a brake system according to claim 1, characterized in that, A connecting block is formed at the bottom of the brake hinge ear, a threaded hole is arranged in the connecting block, a threaded shaft is formed at the end of the brake pull rod far from the brake cylinder, and the threaded shaft is threadedly connected in the threaded hole.

4. The articulated connection structure for a brake system according to claim 2, characterized in that, The locking member is a connecting pin shaft, and connecting holes are arranged in both the first extension part and the second extension part, and the connecting pin shaft penetrates through the connecting holes and the spherical plain bearing.

5. The articulated connection structure for a brake system according to claim 4, characterized in that, The inner diameter of the connecting hole is larger than the diameter of the connecting pin shaft.

6. The articulated connection structure for a brake system according to claim 3, characterized in that, An opening groove and a fixing member are formed on the brake hinge ear, the opening groove communicates with the threaded hole, and when the threaded shaft is threadedly connected with the threaded hole, the fixing member can penetrate through the opening groove and lock the brake pull rod in the brake hinge ear.

7. The articulated connection structure for a brake system according to claim 2, characterized in that, Yielding arc-shaped grooves are formed on both side walls of the brake hinge ear close to the guiding cavity.

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