A brake roller shaft

Abstract

The utility model relates to the technical field of roller shafts, and discloses a brake roller shaft, including a shaft, both ends of the shaft are sleeved with anti-skid rings, and the outside of the anti-skid rings are sleeved with needle bearings, multiple limiting mechanisms are connected between two needle bearings, and three support rings are installed between two adjacent limiting mechanisms, rollers are sleeved on the outside of the two needle bearings, and the rollers and the needle bearings are provided with grooves on the sides that abut against each other, and blocks are clamped inside the grooves. The utility model uses support rings to generate an outward support force on the roller from the inside, and due to the annular structure of the support ring, the support strength of the support ring is improved, and at the same time, the limiting mechanism is cooperated to limit and fix the support ring to prevent the support ring from moving at will, so that the support ring supports the roller more stably and reliably.

Description

Technical Field

[0001] The utility model relates to the technical field of roller shafts, in particular to a brake roller shaft. Background Art

[0002] The roller shaft in the brake (sometimes also called the roller support shaft) mainly plays a role in certain types of braking systems, especially in the wedge brake or parking brake mechanism in the drum brake, which mainly plays the role of transmission, positioning and guidance;

[0003] Chinese patent authorization announcement number CN 220549957 U discloses an efficient and stable forklift roller shaft, including: a roller, the roller is used to support the weight of the forklift so that the forklift can travel smoothly on the ground; the two ends of the roller are hollow inside to form an installation cavity, and roller bearings are fixed at both ends of the installation cavity. At the same time, by setting a bearing structure and a positioning structure, the stability and positioning accuracy of the shaft can be guaranteed, and the stability and driving efficiency of the forklift can be further improved. The above-mentioned prior art scheme has the following shortcomings: the roller shaft uses a connecting disk and a connecting rod to further support the inside of the roller, but in this structure, since the connecting rod is not connected to the roller, its support effect on the roller is general, and since part of the roller shaft needs to be on a rotating brake disc, automatic rolling is used to reduce friction loss. Due to friction, the surface of the roller is easily heated, but the structure is not provided with a related cooling structure, so that the roller is easily deformed by heat under the action of rotational friction, so there is a certain room for improvement. Utility Model Content

[0004] The utility model aims to provide a brake roller shaft to solve the problem that the overall anti-deformation effect of the existing brake roller shaft proposed in the above background technology is mediocre.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brake roller shaft, comprising a shaft rod, both ends of the shaft rod are sleeved with anti-slip rings, and the outside of the anti-slip rings are sleeved with needle bearings, a plurality of limiting mechanisms are connected between the two needle bearings, and three support rings are installed between two adjacent limiting mechanisms, the outsides of the two needle bearings are sleeved with rollers, and the abutting sides of the rollers and the needle bearings are provided with grooves, and the inside of the grooves is clamped with blocks, the inner side of the blocks is connected to the outer side of the needle bearings, the outer ends of the two needle bearings are sleeved with cover plates, and the outer edges of the two cover plates are respectively fixed to one end of the roller by bolts, one side of the support ring is abutted against the inner wall of the groove, and the inside of the support ring is provided with a guide mechanism.

[0006] Preferably, the limiting mechanism includes a limiting plate connected to the opposite ends of the two needle bearings, and limiting grooves are provided on both sides of the limiting plate, and a limiting block is installed on the side of the support ring close to the limiting plate, and the outer end of the limiting block is abutted against the inner wall of the limiting groove.

[0007] Preferably, each of the support rings is provided with two groups of limit blocks, and each group of limit blocks is installed with two, and the limit blocks in the same group are distributed colinearly with the diameter of the support ring.

[0008] Preferably, eight limit plates are provided, and the limit plates are distributed in an annular manner with equal intervals on the needle bearing.

[0009] Preferably, the support rings are provided in eight groups, and each group is provided with three support rings, and the support rings in the same group are offset against each other.

[0010] Preferably, the flow guiding mechanism includes an oil guiding chamber opened inside the flow guiding mechanism, and a ball is movably installed inside the oil guiding chamber, the interior of the oil guiding chamber is filled with lubricating oil, a connecting hole is opened on the side of the oil guiding chamber close to the roller, and the outer end of the connecting hole is abutted against the roller through a sealing gasket.

[0011] Preferably, the diameter of the ball is smaller than the cross-sectional diameter of the oil guide cavity, and the diameter of the ball is larger than the diameter of the connecting hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The support ring is used to generate an outward support force on the roller from the inside, and the annular structure of the support ring improves the support strength of the support ring. At the same time, the limiting mechanism is used to limit and fix the support ring to prevent the support ring from moving at will, making the support ring more stable and reliable for the roller;

[0014] (2) The oil guide cavity and the connecting hole are used to make the lubricating oil contact with the inner wall of the roller. Under the action of the lubricating oil, the friction heat on the surface of the roller is absorbed. At the same time, the rolling property of the roller shaft is utilized to realize the rolling of the ball inside the oil guide cavity, thereby increasing the fluidity of the lubricating oil inside the oil guide cavity and reducing the possibility of the lubricating oil solidifying. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the limit plate distribution of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the support ring of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the support ring of the utility model.

[0020] Explanation of the reference numerals in the figure: 1. shaft; 2. needle bearing; 3. anti-slip ring; 4. cover plate; 5. roller; 6. clamping block; 7. clamping groove; 8. support ring; 9. flow guide mechanism; 901. connecting hole; 902. oil guide chamber; 903. ball; 10. limiting mechanism; 1001. limiting plate; 1002. limiting groove; 1003. limiting block. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 The utility model provides an embodiment: a brake roller shaft, including a shaft rod 1, both ends of the shaft rod 1 are sleeved with anti-skid rings 3, and the outside of the anti-skid rings 3 are sleeved with needle bearings 2, and a plurality of limit mechanisms 10 are connected between the two needle bearings 2;

[0023] The limiting mechanism 10 includes a limiting plate 1001 connected to the opposite ends of the two needle bearings 2, and limiting grooves 1002 are provided on both sides of the limiting plate 1001. A limiting block 1003 is installed on one side of the support ring 8 close to the limiting plate 1001, and the outer end of the limiting block 1003 abuts against the inner wall of the limiting groove 1002.

[0024] Each support ring 8 is provided with two groups of limit blocks 1003, and each group of limit blocks 1003 is installed with two, and the limit blocks 1003 in the same group are distributed in the same line with the diameter of the support ring 8;

[0025] There are eight limit plates 1001, and the limit plates 1001 are distributed in an annular manner with equal intervals on the needle bearing 2;

[0026] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, the special structure of the support ring 8 is used to provide a good support effect on the roller 5, and the stop block 1003 and the stop groove 1002 are used to abut against each other to fix the support ring 8 and prevent the support ring 8 from moving randomly inside the roller 5.

[0027] And three support rings 8 are installed between two adjacent limiting mechanisms 10;

[0028] There are eight groups of support rings 8, and each group of support rings 8 has three support rings, and the support rings 8 in the same group are offset against each other;

[0029] The outer sides of the two needle roller bearings 2 are sleeved with rollers 5, and the abutting sides of the rollers 5 and the needle roller bearings 2 are provided with slots 7, and the inside of the slots 7 is clamped with a clamping block 6, and the inner side of the clamping block 6 is connected to the outer side of the needle roller bearings 2. The outer ends of the two needle roller bearings 2 are sleeved with cover plates 4, and the outer edges of the two cover plates 4 are respectively fixed to one end of the roller 5 by bolts, one side of the support ring 8 is against the inner wall of the slot 7, and the inside of the support ring 8 is provided with a guide mechanism 9;

[0030] The flow guiding mechanism 9 includes an oil guiding chamber 902 opened inside the flow guiding mechanism 9, and a ball 903 is movably installed inside the oil guiding chamber 902. The inside of the oil guiding chamber 902 is filled with lubricating oil. A connecting hole 901 is opened on one side of the oil guiding chamber 902 close to the roller 5, and the outer end of the connecting hole 901 is against the roller 5 through a sealing gasket.

[0031] The diameter of the ball 903 is smaller than the cross-sectional diameter of the oil guide cavity 902 , and the diameter of the ball 903 is larger than the diameter of the connecting hole 901 ;

[0032] Specifically, Figure 1 , Figure 4 As shown, during use, the sliding of the ball 903 inside the oil guide cavity 902 is utilized, and the actual use of the roller shaft is utilized to prevent the solidification of the lubricating oil.

[0033] Working principle: When the utility model is used, firstly, the anti-skid rings 3 are respectively sleeved on the two ends of the shaft 1, and then the needle bearings 2 are correspondingly sleeved on the anti-skid rings 3, and the support rings 8 are sequentially inserted between the adjacent limit plates 1001, so that the limit blocks 1003 are inserted into the inside of the limit grooves 1002, thereby fixing the support rings 8;

[0034] Secondly, lubricating liquid is injected into the oil guide cavity 902 through the connecting hole 901, and then the roller 5 is sleeved on the outside of the needle bearing 2, and the cover plates 4 at both ends are fixed to the roller 5 by bolts, so that the clamping block 6 is clamped into the inside of the clamping groove 7, so as to further limit the position of the roller 5;

[0035] Finally, when the roller shaft is in operation, the roller 5 rolls along the brake disc, thereby causing the needle bearing 2 to roll, causing each set of support rings 8 to rotate around the shaft 1, so that the ball 903 slides inside the oil guide chamber 902 due to the rotation under the action of gravity, centrifugation, etc., so that the ball 903 moves along the oil guide chamber 902, thereby driving the lubricating oil inside the oil guide chamber 902 to generate fluidity to prevent the lubricating oil from solidifying.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A brake roller shaft, comprising a shaft rod (1), characterized in that: Both ends of the shaft (1) are sleeved with anti-slip rings (3), and needle bearings (2) are sleeved on the outside of the anti-slip rings (3). A plurality of limiting mechanisms (10) are connected between the two needle bearings (2), and three support rings (8) are installed between two adjacent limiting mechanisms (10). Rollers (5) are sleeved on the outside of the two needle bearings (2), and grooves (7) are provided on the sides of the rollers (5) and the needle bearings (2) that abut against each other, and a block (6) is clamped inside the groove (7), and the inner side of the block (6) is connected to the outer side of the needle bearing (2). Cover plates (4) are sleeved on the outer ends of the two needle bearings (2), and the outer edges of the two cover plates (4) are respectively fixed to one end of the roller (5) by bolts. One side of the support ring (8) abuts against the inner wall of the groove (7), and a flow guide mechanism (9) is provided inside the support ring (8).

2. A brake roller shaft according to claim 1, characterized in that: The limiting mechanism (10) comprises a limiting plate (1001) connected to the opposite ends of the two needle bearings (2), and limiting grooves (1002) are provided on both sides of the limiting plate (1001), and a limiting block (1003) is installed on the side of the support ring (8) close to the limiting plate (1001), and the outer end of the limiting block (1003) is against the inner wall of the limiting groove (1002).

3. A brake roller shaft according to claim 2, characterized in that: Each of the support rings (8) is provided with two groups of limit blocks (1003), and each group of limit blocks (1003) is installed with two, and the diameters of the limit blocks (1003) and the support ring (8) in the same group are distributed on the same line.

4. A brake roller shaft according to claim 2, characterized in that: Eight limiting plates (1001) are provided, and the limiting plates (1001) are distributed in an annular manner at equal intervals on the needle roller bearing (2).

5. The brake roller shaft according to claim 1, characterized in that: The support rings (8) are arranged in eight groups, and each group of support rings (8) is arranged in three groups, and the support rings (8) in the same group are abutted against each other.

6. The brake roller shaft according to claim 1, characterized in that: The flow guiding mechanism (9) comprises an oil guiding chamber (902) provided inside the flow guiding mechanism (9), and a ball (903) is movably installed inside the oil guiding chamber (902), the interior of the oil guiding chamber (902) is filled with lubricating oil, a connecting hole (901) is provided on a side of the oil guiding chamber (902) close to the roller (5), and the outer end of the connecting hole (901) is abutted against the roller (5) via a sealing gasket.

7. A brake roller shaft according to claim 6, characterized in that: The diameter of the ball (903) is smaller than the cross-sectional diameter of the oil guide cavity (902), and the diameter of the ball (903) is larger than the diameter of the connecting hole (901).

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