Cross shaft type universal coupling

Abstract

The utility model relates to the technical field of couplings, and discloses a cross shaft type universal coupling which comprises a main body assembly, a driving shaft, a universal joint fork, a supporting piece and a cross shaft, the universal joint fork is fixed to the end of the driving shaft, the supporting piece is arranged in the universal joint fork, and the cross shaft is located in the supporting piece; the lubricating assembly is arranged in the universal joint fork and comprises a storage part, a positioning part and a lubricating part, the storage part is arranged in the universal joint fork, the positioning part is located in the universal joint fork, and the lubricating part is arranged in the positioning part. The shaft coupler has the advantages that oil can be supplied to the bearing when the driving shaft rotates by arranging the lubricating assembly, so that lubrication of the bearing of the shaft coupler is guaranteed, and the service life of the bearing of the shaft coupler is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a cross-axis universal coupling. Background Art

[0002] As an important component in the field of modern mechanical transmission, the cross-axis universal coupling, with its unique cross-axis structure design, realizes constant angular speed continuous rotation between two axes that are not on the same axis or have a large axis angle, and effectively transmits torque and motion. In industrial production, especially in the fields of automobiles, construction machinery, ships, etc., the cross-axis universal coupling has become an indispensable transmission component due to its significant features such as strong angle compensation ability, compact and reasonable structure, large load-bearing capacity and high transmission efficiency. With the continuous advancement of technology and the rapid development of industry, the performance of the cross-axis universal coupling has been continuously optimized, and its application field has been expanding, providing strong support for the development of the field of modern mechanical transmission.

[0003] However, the bearing part of the existing coupling is prone to poor bearing sealing during use, causing the bearing to lose oil, which in turn causes the bearing and the shaft neck to seize, causing the bearing to be quickly damaged. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing cross-axis universal coupling, the present utility model is proposed.

[0006] Therefore, the problem to be solved by the utility model is that the bearing part of the existing coupling is prone to poor bearing sealing during use, causing the bearing to lose oil, which in turn causes the bearing and the shaft neck to seize, causing the bearing to be quickly damaged.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a cross-axis universal coupling, comprising a main body assembly, including a driving shaft, a universal joint fork, a support member and a cross shaft, wherein the universal joint fork is fixed to the end of the driving shaft, the support member is arranged in the universal joint fork, and the cross shaft is located in the support member; and

[0008] A lubrication component is arranged in the universal joint fork, and comprises a storage component, a positioning component and a lubrication component. The storage component is arranged in the universal joint fork, the positioning component is located in the universal joint fork, and the lubrication component is arranged in the positioning component.

[0009] As a preferred solution of the cross-axis universal coupling described in the utility model, the support member includes a bearing sleeve, a ball, a bearing inner ring and a retaining spring, the bearing sleeve slides in the universal joint fork, the ball rolls in the bearing sleeve, the bearing inner ring is rotatably connected to the bearing sleeve, and the retaining spring is clamped in the universal joint fork.

[0010] As a preferred solution of the cross-axis universal coupling of the utility model, the storage component includes an oil storage pipe and an oil delivery pipe, the oil storage pipe is fixed in the universal joint fork, and the oil delivery pipe is fixed in the oil storage pipe.

[0011] As a preferred solution of the cross-axis universal coupling described in the utility model, the storage component also includes a feeding pipe, a sealing bolt and an extrusion plate, the feeding pipe is fixed to one side of the oil storage pipe, the sealing bolt is connected to the feeding pipe through a threaded rotation, the extrusion plate slides in the oil storage pipe, and a through hole is opened in the oil storage pipe.

[0012] As a preferred solution of the cross-axis universal coupling described in the utility model, the positioning member includes a clamping block and a first spring, the clamping block slides in the universal joint fork, and the two ends of the first spring are respectively fixed to the inner wall of the clamping block and the inner wall of the universal joint fork.

[0013] As a preferred solution of the cross-axis universal coupling of the utility model, the positioning member further comprises a connecting column and a driving block, the connecting column is fixed to one side of the clamping block, and the driving block is fixed to the end of the connecting column.

[0014] As a preferred solution of the cross-axis universal coupling of the utility model, the lubricating member includes a lubricating tube, the lubricating tube is fixed to the surface of the bearing sleeve, and the lubricating tube can slide in the clamping block.

[0015] As a preferred solution of the cross-axis universal coupling of the utility model, the lubricating component further comprises an extrusion block and an extrusion rod, the extrusion block slides in the lubrication tube, the extrusion rod is fixed to one side of the extrusion block, and a flow channel is provided on the surface of the extrusion block.

[0016] As a preferred solution of the cross-axis universal coupling of the utility model, the lubricating component further comprises a feed block and a sealing ring, the feed block is fixed to the end of the extrusion rod, and the sealing ring is fixed to the inner wall of the lubrication tube.

[0017] As a preferred solution of the cross-axis universal coupling of the utility model, the lubricating component further includes a second spring and a support block, the two ends of the second spring are respectively fixed to one side of the feed block and one side of the support block, and the support block is fixed in the lubrication tube.

[0018] The utility model has the beneficial effect that, by arranging the lubrication assembly, oil can be supplied to the bearing while the driving shaft is rotating, thereby ensuring the lubrication of the coupling bearing and increasing the service life of the coupling bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 This is the structural diagram of the cross-axis universal coupling.

[0021] Figure 2 For cross shaft universal coupling Figure 1 A magnified view of the local structure at point A.

[0022] Figure 3 This is a cross-sectional structural diagram of the oil storage pipe of the cross-axis universal coupling.

[0023] Figure 4 For cross shaft universal coupling Figure 3 Enlarged view of the local structure at point B in the middle.

[0024] Figure 5 This is a cross-sectional structural diagram of the clamping block of a cross-axis universal coupling.

[0025] Figure 6 For cross shaft universal coupling Figure 5 Enlarged view of the local structure at point C in the middle. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figure 1 to Figure 6 , which is the first embodiment of the utility model, and this embodiment provides a cross-axis universal coupling, which includes a main body component 100 and a lubrication component 200. Through the cooperation of the two, oil can be supplied to the bearing while the driving shaft 101 rotates, thereby ensuring the lubrication of the coupling bearing and improving the service life of the coupling bearing.

[0031] Specifically, the main assembly 100 includes a driving shaft 101 , a yoke 102 , a support member 103 and a cross shaft 104 . The yoke 102 is fixed to the end of the driving shaft 101 , the support member 103 is disposed in the yoke 102 , and the cross shaft 104 is located in the support member 103 .

[0032] The driving shaft 101 is used to fix the yoke 102 , and the supporting member 103 is used to install the cross shaft 104 in the yoke 102 .

[0033] The lubricating assembly 200 is disposed in the yoke 102 , and includes a storage member 201 , a positioning member 202 and a lubricating member 203 . The storage member 201 is disposed in the yoke 102 , the positioning member 202 is located in the yoke 102 , and the lubricating member 203 is disposed in the positioning member 202 .

[0034] The storage member 201 is used to store lubricating oil, the positioning member 202 is used to position the support member 103 , and the lubricating member 203 is used to transport lubricating oil into the support member 103 .

[0035] Specifically, the support member 103 includes a bearing sleeve 103a, a ball 103b, a bearing inner ring 103c and a retaining spring 103d. The bearing sleeve 103a slides in the universal joint fork 102, the ball 103b rolls in the bearing sleeve 103a, the bearing inner ring 103c is rotatably connected to the bearing sleeve 103a, and the retaining spring 103d is clamped in the universal joint fork 102.

[0036] The bearing sleeve 103a is used to support the ball 103b, the ball 103b is used to support the bearing inner ring 103c, the retaining spring 103d is used to limit the bearing sleeve 103a to prevent the bearing sleeve 103a from slipping out of the universal joint fork 102, and the axle protrusion end of the cross shaft 104 is located in the bearing inner ring 103c, so that the bearing inner ring 103c supports the cross shaft 104.

[0037] Specifically, the storage member 201 includes an oil storage pipe 201a and an oil delivery pipe 201b. The oil storage pipe 201a is fixed in the universal joint fork 102, and the oil delivery pipe 201b is fixed in the oil storage pipe 201a.

[0038] The oil storage pipe 201a is used to store lubricating oil, and the oil delivery pipe 201b is used to deliver lubricating oil to the positioning member 202. The oil storage pipe 201a and the oil delivery pipe 201b are connected.

[0039] Specifically, the storage component 201 also includes a feeding pipe 201c, a sealing bolt 201d and an extrusion plate 201e. The feeding pipe 201c is fixed to one side of the oil storage pipe 201a. The sealing bolt 201d is connected to the feeding pipe 201c by threaded rotation. The extrusion plate 201e slides in the oil storage pipe 201a. A through hole U is opened in the oil storage pipe 201a.

[0040] The feeding pipe 201c is used to add lubricating oil to the oil storage pipe 201a, and the sealing bolt 201d is used to seal the feeding pipe 201c to prevent the lubricating oil in the oil storage pipe 201a from leaking. When the driving shaft 101 rotates, the extrusion plate 201e can squeeze the lubricating oil in the oil storage pipe 201a under the action of centrifugal force, thereby moving the lubricating oil to the oil delivery pipe 201b. The setting of the through hole U can enable the extrusion plate 201e to move smoothly in the oil storage pipe 201a.

[0041] Example 2

[0042] Reference Figure 2 and Figure 5 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0043] Specifically, the positioning member 202 includes a clamping block 202a and a first spring 202b. The clamping block 202a slides in the yoke 102. Two ends of the first spring 202b are respectively fixed to the inner wall of the clamping block 202a and the inner wall of the yoke 102.

[0044] The clamping block 202a is tightly attached to the surface of the bearing sleeve 103a, and the first spring 202b is in the compression body, which is used to push the clamping block 202a toward the bearing sleeve 103a. The clamping block 202a slides on the surface of the oil pipe 201b, and the connection between the two is sealed.

[0045] Specifically, the positioning member 202 further includes a connecting column 202c and a driving block 202d. The connecting column 202c is fixed to one side of the clamping block 202a, and the driving block 202d is fixed to the end of the connecting column 202c.

[0046] The connecting column 202c is used to drive the clamping block 202a to move. By sliding the driving block 202d, the driving block 202d can drive the clamping block 202a to move away from the bearing sleeve 103a through the connecting column 202c.

[0047] Example 3

[0048] Reference Figure 6 , which is the third embodiment of the utility model, and this embodiment is based on the first two embodiments.

[0049] Specifically, the lubricating member 203 includes a lubricating tube 203a, which is fixed to the surface of the bearing sleeve 103a and can slide in the clamping block 202a.

[0050] The clamping block 202a sets a limit on the lubrication tube 203a, thereby positioning the position of the bearing sleeve 103a, so as to prevent the bearing sleeve 103a from sliding arbitrarily in the universal joint fork 102. The lubrication tube 203a is used to transport the lubricating oil in the clamping block 202a to the bearing sleeve 103a, so as to lubricate the ball 103b and the bearing inner ring 103c in the bearing sleeve 103a. A sealing ring is provided at the connection between the end of the lubrication tube 203a and the clamping block 202a.

[0051] Specifically, the lubricating member 203 further includes an extrusion block 203b and an extrusion rod 203c. The extrusion block 203b slides in the lubrication tube 203a. The extrusion rod 203c is fixed to one side of the extrusion block 203b. A flow channel V is provided on the surface of the extrusion block 203b.

[0052] When the ball 103b squeezes the squeezing block 203b, the squeezing block 203b can drive the squeezing rod 203c to move, and the flow channel V opened on the surface of the squeezing block 203b is used to transport the lubricating oil in the lubricating pipe 203a to the bearing sleeve 103a.

[0053] Specifically, the lubricating member 203 further includes a feed block 203d and a sealing ring 203e. The feed block 203d is fixed to the end of the extrusion rod 203c, and the sealing ring 203e is fixed to the inner wall of the lubrication tube 203a.

[0054] When the extrusion block 203b pushes the extrusion rod 203c to move, the extrusion rod 203c can drive the feed block 203d away from the sealing ring 203e. At this time, the lubricating oil can move to the side of the extrusion block 203b through the gap between the extrusion block 203b and the sealing ring 203e, and then the lubricating oil is transported to the bearing sleeve 103a through the flow channel V opened on the surface of the extrusion block 203b.

[0055] Specifically, the lubricating member 203 further includes a second spring 203f and a support block 203g. Two ends of the second spring 203f are respectively fixed to one side of the feed block 203d and one side of the support block 203g. The support block 203g is fixed in the lubricating tube 203a.

[0056] The support block 203g is used to support the second spring 203f. The second spring 203f is in a compressed state. The elastic force of the second spring 203f can make the extrusion block 203b move toward the sealing ring 203e, thereby blocking the lubrication pipe 203a. At this time, the lubricating oil cannot move to the side of the extrusion block 203b through the sealing ring 203e.

[0057] When in use, when the cross-axis universal coupling is used, the driving shaft 101 will rotate first, and the squeezing plate 201e can squeeze the lubricating oil in the oil storage pipe 201a under the action of centrifugal force, so that the lubricating oil moves to the oil delivery pipe 201b, and the lubricating oil is transported from the oil delivery pipe 201b to the clamping block 202a. If the cross shaft 104 and the corresponding bearing sleeve 103a rotate relative to each other at this time, the ball 103b in the bearing sleeve 103a will roll. At this time, the rolling of the ball 103b will repeatedly squeeze the squeezing block 203b. When the ball 103b squeezes the squeezing block 203b, the squeezing block 203b can bring The extrusion rod 203c is moved, and the extrusion rod 203c drives the feed block 203d away from the sealing ring 203e. At this time, the lubricating oil can move to the side of the extrusion block 203b through the gap between the extrusion block 203b and the sealing ring 203e. When the ball 103b is away from the extrusion block 203b, under the action of the return elastic force of the second spring 203f, the feed block 203d can squeeze the sealing ring 203e, so that the lubricating oil between the sealing ring 203e and the extrusion block 203b is squeezed. At this time, the lubricating oil there is transported to the bearing sleeve 103a through the flow channel V opened on the surface of the extrusion block 203b, so as to lubricate the ball 103b and prevent the bearing from losing oil.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A cross-axis universal coupling, characterized in that: include, A main body assembly (100) comprises a driving shaft (101), a universal joint fork (102), a support member (103) and a cross shaft (104), wherein the universal joint fork (102) is fixed to an end of the driving shaft (101), the support member (103) is arranged in the universal joint fork (102), and the cross shaft (104) is located in the support member (103); and, The lubrication component (200) is arranged in the universal joint fork (102), and comprises a storage component (201), a positioning component (202) and a lubrication component (203); the storage component (201) is arranged in the universal joint fork (102), the positioning component (202) is located in the universal joint fork (102), and the lubrication component (203) is arranged in the positioning component (202).

2. The cross-axis universal coupling according to claim 1, characterized in that: The support member (103) comprises a bearing sleeve (103a), a ball (103b), a bearing inner ring (103c) and a retaining spring (103d); the bearing sleeve (103a) slides in the universal joint fork (102); the ball (103b) rolls in the bearing sleeve (103a); the bearing inner ring (103c) is rotatably connected to the bearing sleeve (103a); and the retaining spring (103d) is clamped in the universal joint fork (102).

3. The cross-axis universal coupling according to claim 2, characterized in that: The storage component (201) comprises an oil storage pipe (201a) and an oil delivery pipe (201b); the oil storage pipe (201a) is fixed in the universal joint fork (102), and the oil delivery pipe (201b) is fixed in the oil storage pipe (201a).

4. The cross-axis universal coupling according to claim 3, characterized in that: The storage component (201) further comprises a feeding pipe (201c), a sealing bolt (201d) and a squeeze plate (201e); the feeding pipe (201c) is fixed to one side of the oil storage pipe (201a); the sealing bolt (201d) is rotatably connected to the feeding pipe (201c) via a thread; the squeeze plate (201e) slides in the oil storage pipe (201a); and a through hole (U) is provided in the oil storage pipe (201a).

5. The cross-axis universal coupling according to claim 4, characterized in that: The positioning member (202) comprises a clamping block (202a) and a first spring (202b); the clamping block (202a) slides in the universal joint fork (102); and two ends of the first spring (202b) are respectively fixed to the inner wall of the clamping block (202a) and the inner wall of the universal joint fork (102).

6. The cross-axis universal coupling according to claim 5, characterized in that: The positioning member (202) further comprises a connecting column (202c) and a driving block (202d), wherein the connecting column (202c) is fixed to one side of the clamping block (202a), and the driving block (202d) is fixed to the end of the connecting column (202c).

7. The cross-axis universal coupling according to claim 5 or 6, characterized in that: The lubricating component (203) comprises a lubricating tube (203a), the lubricating tube (203a) is fixed to the surface of the bearing sleeve (103a), and the lubricating tube (203a) can slide in the clamping block (202a).

8. The cross-axis universal coupling according to claim 7, characterized in that: The lubricating component (203) further comprises an extrusion block (203b) and an extrusion rod (203c); the extrusion block (203b) slides in the lubrication tube (203a); the extrusion rod (203c) is fixed to one side of the extrusion block (203b); and a flow channel (V) is provided on the surface of the extrusion block (203b).

9. The cross-axis universal coupling according to claim 8, characterized in that: The lubricating component (203) further comprises a feed block (203d) and a sealing ring (203e); the feed block (203d) is fixed to the end of the extrusion rod (203c), and the sealing ring (203e) is fixed to the inner wall of the lubricating tube (203a).

10. The cross-axis universal coupling according to claim 9, characterized in that: The lubricating component (203) further comprises a second spring (203f) and a support block (203g), wherein two ends of the second spring (203f) are respectively fixed to one side of the feed block (203d) and one side of the support block (203g), and the support block (203g) is fixed in the lubricating tube (203a).

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