Bearing limiting sleeve

Abstract

The utility model relates to a bearing limit sleeve, which is composed of a sleeve, the axial direction of the sleeve extends along the vertical direction, an inserting groove is arranged in the sleeve, the sleeve comprises an upper sleeve body, a contact sleeve and a lower sleeve body, a flow channel is arranged on the contact sleeve, the upper sleeve body and the lower sleeve body are respectively sleeved above and below the contact sleeve, and the upper sleeve body and the lower sleeve body are sleeved on the contact sleeve. The contact sleeve is made of PVC materials, and the upper sleeve body and the lower sleeve body are made of metal materials. By the adoption of the scheme, the sleeve is split, the contact sleeve in the middle is made of PVC, and therefore the weight of the limiting sleeve is reduced, and convenience is brought to disassembly and assembly.

Description

Technical Field

[0001] The utility model relates to a bearing limiting sleeve. Background Art

[0002] The bearing limit sleeve (also called the bearing limit ring or bearing locating ring) is located between the shaft and the bearing. It is usually used to limit the axial movement of the bearing and ensure that it works stably in the predetermined position.

[0003] Existing limit sleeves are usually metal one-piece limit sleeves, which are more common. They can be made of steel, stainless steel or other alloy materials to ensure sufficient durability and precise size control. Their advantages are high strength and wear resistance, and they can withstand working environments under heavy loads and high-speed operation conditions.

[0004] However, the metal integrated limit sleeve is heavy and has a high cost. When the limit sleeve needs to be removed from or installed into the bearing, the heavy limit sleeve will cause inconvenience in disassembly, assembly and use. Summary of the invention

[0005] In view of the shortcomings of the prior art, the utility model aims to provide a bearing limit sleeve which is divided into two parts and the contact sleeve in the middle is made of PVC, thereby reducing the weight of the limit sleeve and bringing convenience to disassembly and assembly.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it is composed of a sleeve, the axial direction of the sleeve extends in the up and down directions, an insertion groove is arranged in the sleeve, the sleeve includes an upper sleeve body, a contact sleeve and a lower sleeve body, a flow channel is arranged on the contact sleeve, the upper sleeve body and the lower sleeve body are respectively sleeved on the upper and lower parts of the contact sleeve, the contact sleeve is made of PVC material, and the upper sleeve body and the lower sleeve body are both made of metal material.

[0007] The utility model is further configured as follows: the upper sleeve body is provided with an upper matching section protruding downward, the contact sleeve is provided with an upper mounting section, the contact sleeve is provided with an upper matching groove in the circumferential direction of the upper mounting section, and the upper matching section is sleeved on the upper mounting section and is located in the upper matching groove.

[0008] The utility model is further configured as follows: the upper sleeve body comprises an upper loading section at the top, the upper loading section is arranged in a flaring manner from top to bottom, and the lower sleeve body comprises a lower loading section at the bottom, the lower loading section is arranged in a constricting manner from top to bottom.

[0009] The utility model is further configured as follows: the insertion groove includes a first section, a second section and a third section located on the upper sleeve body and a fourth section on the contact sleeve, the diameter of the first section is smaller than the diameter of the second section, the second section is flared from top to bottom, and the diameters of the third section and the fourth section are the same as the bottom diameter of the second section.

[0010] The utility model is further configured as follows: a limiting piece is protrudingly provided on the upper sleeve body below the upper matching section, a limiting groove is provided on the contact sleeve corresponding to the limiting piece, the cross-section of the limiting piece is L-shaped and includes a limiting section extending in the left and right directions, and a limiting ring is provided on the contact sleeve above the limiting section.

[0011] The utility model is further configured as follows: the limiting section comprises an outer guide surface, and the guide surface is arranged to be inclined from top to bottom and from outside to inside.

[0012] The utility model is further configured as follows: the contact sleeve is provided with a positioning plug-in block facing upward, and the upper matching section is provided with a positioning slot for the corresponding positioning plug-in block to be inserted.

[0013] The utility model is further configured as follows: a matching slot is recessed inwardly on the positioning plug block, the matching slot is arranged in a ring shape, and the upper matching section is located in the positioning slot and a matching plug block is arranged.

[0014] By adopting the above technical scheme, 1. Since the contact sleeve is made of PVC material, the overall weight of the sleeve can be effectively reduced and the production cost is reduced by replacing metal with PVC; 2. Since the sleeve includes an upper sleeve body, a contact sleeve and a lower sleeve body, that is, a split type, compared with the commonly existing one-piece limit sleeve, the split limit sleeve can be assembled and put into use after completion of production, and can be partially removed and replaced when local damage occurs, thereby extending the overall service life of the limit sleeve. 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 only 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 A three-dimensional diagram of a specific implementation of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is an axonometric view of the cross section of the utility model;

[0019] Figure 4 A cross-sectional view of the contact sleeve and the lower sleeve body being assembled together;

[0020] Figure 5 It is a three-dimensional diagram of the upper casing in an inverted state;

[0021] Figure 6 for Figure 2 A magnified view of middle;

[0022] Figure 7 for Figure 3 Enlarged view of B.

[0023] In the figure: 1-sleeve, 11-insertion slot;

[0024] 2-upper sleeve, 21-upper matching section, 211-positioning slot, 212-matching plug, 22-first section, 23-second section, 24-third section, 25-limiting member, 251-limiting section, 2511-guide surface, 26-upper loading section;

[0025] 3-contact sleeve, 31-flow channel, 32-upper mounting section, 33-upper matching groove, 34-limiting groove, 35-limiting ring, 36-positioning plug, 361-matching slot, 37-fourth section;

[0026] 4-lower casing body, 41-lower loading section. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0028] like Figure 1-Figure 7As shown, the utility model discloses a bearing limit sleeve, which is composed of a sleeve 1. The axial direction of the sleeve 1 extends in the up-down direction. An insertion groove 11 is arranged in the sleeve 1. By locating the sleeve 1 on the inner periphery of the bearing, the shaft is inserted through the insertion groove 11, and the sleeve 1 is located between the shaft and the bearing (this is the prior art and is not described in detail here). The sleeve 1 includes an upper sleeve body 2, a contact sleeve 3 and a lower sleeve body 4. The contact sleeve 3 is provided with a flow channel 31 for the flow of lubricating oil. The upper sleeve body 2 and the lower sleeve body 4 are respectively sleeved on the upper and lower parts of the contact sleeve 3. The sleeve 3 is made of PVC material, and the upper sleeve body 2 and the lower sleeve body 4 are both made of metal material. 1. Since the contact sleeve 3 is made of PVC material, the overall weight of the sleeve 1 can be effectively reduced, and the production cost is reduced by replacing metal with PVC; 2. Since the sleeve 1 includes the upper sleeve body 2, the contact sleeve 3 and the lower sleeve body 4, that is, a split type, compared with the commonly existing one-piece limit sleeve, the split limit sleeve can be assembled and put into use after completion of production, and can be partially removed and replaced after local damage occurs, thereby extending the overall service life of the limit sleeve.

[0029] Among them, the upper sleeve body 2 is provided with an upper mating section 21 protruding downward, the contact sleeve 3 is provided with an upper mounting section 32, and the contact sleeve 3 is provided with an upper mating groove 33 in the circumference of the upper mounting section 32. The upper mating section 21 is sleeved on the upper mounting section 32 and is located in the upper mating groove 33. During the assembly process of the limit sleeve, the upper mating section 21 below the upper sleeve body 2 is sleeved on the upper mounting section 32 of the contact sleeve 3, that is, the upper mating section 21 is located in the upper mating groove 33 at this time, and the inner wall of the upper mating section 21 will be against the circumference of the upper mounting section 32 to achieve the position determination of the upper sleeve body 2 and the contact sleeve 3, thereby facilitating the subsequent fixation of the upper sleeve body 2 and the contact sleeve 3.

[0030] Preferably, the upper sleeve body 2 includes an upper loading section 26 at the top, and the upper loading section 26 is flared from top to bottom, and the lower sleeve body 4 includes a lower loading section 41 at the bottom, and the lower loading section 41 is constricted from top to bottom. Since the upper loading section 26 is flared and the lower loading section 41 is constricted from top to bottom, when the sleeve 1 is installed into the bearing, the first part inserted into the bearing is the upper part of the upper loading section 26 or the lower part of the lower loading section 41, which are respectively the narrowest part of the upper loading section 26 and the narrowest part of the lower loading section 41, thereby facilitating the installation of the sleeve 1 into the bearing.

[0031] Preferably, the insertion groove 11 includes a first section 22, a second section 23 and a third section 24 on the upper sleeve 2 and a fourth section 37 on the contact sleeve 3. The diameter of the first section 22 is smaller than the diameter of the second section 23. The second section 23 is flared from top to bottom. The diameters of the third section 24 and the fourth section 37 are the same as the bottom diameter of the second section 23. 1. When the shaft enters the upper sleeve 2, it needs to enter the first section 22 first. Since the diameter of the first section 22 is smaller than the diameter of the second section 23, the first section 22 can provide axial positioning for the shaft to prevent it from excessive movement. The second section 23 with a diameter larger than the first section 22 enables the looser second section 23 to be used as a means of adjusting the axial clearance after the end of the shaft enters the sleeve 1, so that the shaft has sufficient freedom during rotation and will not be excessively displaced; 2. The difference between the first section 22 and the second section 23 contributes to uniform distribution of stress and avoids local stress concentration, thereby improving the stability and service life of the sleeve 1; when temperature changes cause changes in component size, grooves of different diameters can provide a certain margin, allowing the component to expand or contract freely within a certain range without affecting its function or causing damage.

[0032] In addition, a limiting member 25 is protrudingly provided below the upper mating section 21 of the upper sleeve body 2, and a limiting groove 34 is provided on the contact sleeve 3 corresponding to the limiting member 25. The cross-section of the limiting member 25 is L-shaped and includes a limiting section 251 extending in the left-right direction. A limiting ring 35 is provided above the limiting section 251 of the contact sleeve 3. Since the cross-section of the limiting member 25 is L-shaped, before the upper mating section 21 of the upper sleeve body 2 is completely sleeved on the upper mounting section 32 of the contact sleeve 3, the limiting member 25 will enter the limiting groove 34 during the process of the upper sleeve body 2 being installed on the contact sleeve 3. Since the limiting section 251 of the limiting member 25 will be blocked by the limiting ring 35 when entering the limiting groove 34, the limiting section 251 needs to forcibly pass over the limiting ring 35 to enable the limiting ring 35 to be located above the limiting section 251. Therefore, the existence of the limiting ring 35 can improve the installation stability of the upper sleeve body 2 in the axial direction of the contact sleeve 3.

[0033] Preferably, the limiting segment 251 includes an outer guide surface 2511, and the guide surface 2511 is inclined from top to bottom and from outside to inside. Since the guide surface 2511 on the outer side of the limiting segment 251 is inclined, when the limiting segment 251 enters the limiting groove 34, the limiting segment 251 is overall narrow at the bottom and wide at the top due to the existence of the guide surface 2511, and the bottom of the limiting segment 251, i.e., the part with the smallest width, first enters the limiting groove 34. Therefore, the setting of the guide surface 2511 enables the limiting segment 251 to enter the limiting groove 34 more smoothly and then pass over the limiting ring 35 to achieve the offset between the limiting ring 35 and the limiting segment 251.

[0034] Among them, the contact sleeve 3 is provided with a positioning block 36 upward, and the upper matching section 21 is provided with a positioning slot 211 for the corresponding positioning block 36 to be inserted. When the upper sleeve 2 is installed on the contact sleeve 3, the positioning slot 211 on the upper matching section 21 of the upper sleeve 2 will cooperate with the positioning block 36 on the contact sleeve 3. Therefore, when the positioning block 36 falls into the corresponding positioning slot 211, the upper sleeve 2 cannot rotate compared with the contact sleeve 3. Therefore, the circumferential position of the upper sleeve 2 and the contact sleeve 3 is determined, and then cooperates with the limit member 25 to make it impossible for the upper sleeve 2 and the contact sleeve 3 to move axially and circumferentially after being installed together.

[0035] Preferably, the positioning block 36 is recessed inwardly and is provided with a mating slot 361, and the mating slot 361 is arranged in a ring shape. The upper mating section 21 is located in the positioning slot 211 and is provided with a mating block 212. Since the positioning block 36 is provided with the mating slot 361, during the process of the upper mating section 21 being installed into the mating slot, the portion of the positioning block 36 located at the bottom of the mating slot 361 needs to be forced downward to pass over the mating slot 212 to achieve the mating between the mating slot 361 and the mating block 212. At this time, the positioning block 36 cannot move upward without the action of external force, thereby making the axial connection of the upper sleeve 1 on the contact sleeve 3 more stable.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bearing limit sleeve, composed of a sleeve, the axial direction of the sleeve extends in the up-down direction, and an insertion groove is provided in the sleeve, characterized in that: The sleeve comprises an upper sleeve body, a contact sleeve and a lower sleeve body. The contact sleeve is provided with a flow channel. The upper sleeve body and the lower sleeve body are respectively sleeved on the upper and lower parts of the contact sleeve. The contact sleeve is made of PVC material, and the upper sleeve body and the lower sleeve body are both made of metal material.

2. A bearing limiting sleeve according to claim 1, characterized in that: The upper sleeve body is provided with an upper matching section protruding downward, the contact sleeve is provided with an upper mounting section, the contact sleeve is provided with an upper matching groove in the circumferential direction of the upper mounting section, and the upper matching section is sleeved on the upper mounting section and is located in the upper matching groove.

3. A bearing limiting sleeve according to claim 1 or 2, characterized in that: The upper sleeve body comprises an upper loading section at the top, and the upper loading section is arranged in a flaring manner from top to bottom. The lower sleeve body comprises a lower loading section at the bottom, and the lower loading section is arranged in a shrinking manner from top to bottom.

4. A bearing limiting sleeve according to claim 2, characterized in that: The insertion groove includes a first section, a second section and a third section on the upper sleeve body and a fourth section on the contact sleeve, the diameter of the first section is smaller than the diameter of the second section, the second section is flared from top to bottom, and the diameters of the third section and the fourth section are the same as the bottom diameter of the second section.

5. The bearing limiting sleeve according to claim 2, characterized in that: The upper sleeve body is provided with a limiting piece protruding below the upper matching section, and the contact sleeve is provided with a limiting groove corresponding to the limiting piece. The cross-section of the limiting piece is L-shaped and includes a limiting section extending in the left and right directions. The contact sleeve is provided with a limiting ring above the limiting section.

6. A bearing limiting sleeve according to claim 5, characterized in that: The limiting section comprises an outer guide surface, and the guide surface is arranged to be inclined from top to bottom and from outside to inside.

7. A bearing limiting sleeve according to claim 6, characterized in that: The contact sleeve is provided with a positioning plug-in block upwardly, and the upper matching section is provided with a positioning slot for the corresponding positioning plug-in block to be inserted.

8. The bearing limiting sleeve according to claim 7, characterized in that: The positioning plug block is recessed inwardly and provided with a matching slot, the matching slot is arranged in a ring shape, and the upper matching section is located in the positioning slot and provided with a matching plug block.

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