Maintenance-free cross bag

Abstract

The utility model is applicable to the technical field of cross-shaped bags, and provides a maintenance-free cross-shaped bag which comprises a device block and a plurality of outer shaft mechanisms, four extension seats are fixedly connected to the outer side surface of the device block, and the four extension seats and the device block jointly form a cross-shaped structure. According to the maintenance-free cross bag, the multiple outer shaft mechanisms are arranged, the main body of the cross bag is composed of the four extending bases and the device block, a cross-shaped structure is formed, the four outer shaft mechanisms are detachably installed at the outer ends of the four extending bases correspondingly, and due to the fact that the four outer shaft mechanisms are all connected with the main body in a threaded connection mode, the maintenance-free cross bag is convenient to maintain. Due to the fact that the outer shaft mechanisms are connected through threads, when one outer shaft mechanism is damaged, the outer shaft mechanism can be directly detached to be replaced, maintenance operation is not needed, and due to the fact that the outer shaft mechanisms are connected through the threads, the outer extension lengths of the multiple outer shaft mechanisms can be adjusted, and the device can be matched with cross shaft type universal couplings of various specifications. And the universality of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cross bags, in particular to a maintenance-free cross bag. Background Art

[0002] There are three main structures of cross packs in universal couplings currently used in China: one is SWC type (for integral fork heads), one is SWP type (for split fork heads), and the other is SWZ (for bearing seat fork heads).

[0003] The cross bag is an important component of the cross-axis universal coupling. Due to its structural reasons, the cross bag of the cross-axis universal coupling needs maintenance after long-term use, which is inconvenient. In addition, the general cross bag structure is relatively fixed and can only be adapted one-to-one with the cross-axis universal coupling, and its versatility is poor. Utility Model Content

[0004] The utility model provides a maintenance-free cross bag, aiming to solve the problem that due to the structure of the cross-axis universal coupling, the cross bag needs to be maintained after long-term use, which is inconvenient, and the general cross bag structure is relatively fixed, and can only be adapted one-to-one with the cross-axis universal coupling, so the versatility is poor.

[0005] The utility model is implemented as follows: a maintenance-free cross bag comprises a device block and a plurality of outer shaft mechanisms;

[0006] Four extension seats are fixedly connected to the outer surface of the device block, and the four extension seats and the device block together form a cross structure. The outer ends of the plurality of extension seats are provided with threaded holes along their length directions, and the plurality of external shaft mechanisms are respectively arranged inside the plurality of threaded holes;

[0007] The structures of multiple external shaft mechanisms are the same, one of which includes a threaded rod threadedly connected to the inside of a threaded hole, the other end of the threaded rod is slidably connected to a sliding ring along its length direction, the outer surface of the sliding ring is rotatably connected to a rotating ring, and the outer end of the rotating ring is fixedly connected to a shaft block.

[0008] Preferably, central axes of the threaded rod, the sliding ring, the rotating ring and the shaft block are located in the same straight line.

[0009] Preferably, a first slot is formed at the inner end of the shaft block, a second slot corresponding to the first slot is formed at the outer end of the threaded rod, the inner end of the second slot is rotatably connected to a rotating plate, and a spring is fixedly connected between the rotating plate and the inner end of the first slot.

[0010] Preferably, the central axes of the shaft block, the spring, the first slot, the second slot and the rotating piece are all located in the same straight line.

[0011] Preferably, a plurality of limiting protrusions are fixedly connected to the inner end of the shaft block, and a plurality of limiting grooves corresponding to and matching the plurality of limiting protrusions are formed at the outer end of the threaded rod.

[0012] Preferably, when the spring is not subjected to force, the inner end of the shaft block and the outer end of the threaded rod are not in contact. Beneficial Effects

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By setting up multiple external shaft mechanisms, the main body of the cross bag is composed of four extension seats and a device block to form a cross-shaped structure. The four external shaft mechanisms are detachably installed on the outer ends of the four extension seats respectively. Since the four external shaft mechanisms are connected to the main body by threaded connection, when one external shaft mechanism is damaged, it can be directly removed and replaced without maintenance operation. In addition, because of the threaded connection, the external extension lengths of the multiple external shaft mechanisms can be adjusted, so that the device can adapt to cross-axis universal couplings of various specifications, thereby improving the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of the area at center A;

[0017] Figure 3 It is a schematic diagram of the overall external structure of the utility model.

[0018] In the figure: 1-device block, 2-extension seat, 3-threaded hole, 4-threaded rod, 5-sliding ring, 6-rotating ring, 7-axis block, 8-limiting protrusion, 9-limiting slot, 10-first slot, 11-second slot, 12-rotating sheet, 13-spring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] See also Figure 1-3The utility model provides a technical solution: a maintenance-free cross bag, including a device block 1 and a plurality of external shaft mechanisms, four extension seats 2 are fixedly connected to the outer surface of the device block 1, the four extension seats 2 and the device block 1 together form a cross structure, the outer ends of the plurality of extension seats 2 are provided with threaded holes 3 along their length directions, and the plurality of external shaft mechanisms are respectively arranged inside the plurality of threaded holes 3.

[0021] The structures of multiple external shaft mechanisms are the same. One of the external shaft mechanisms includes a threaded rod 4 threadedly connected to a threaded hole 3. The other end of the threaded rod 4 is slidably connected to a sliding ring 5 along its length direction. The outer surface of the sliding ring 5 is rotatably connected to a rotating ring 6. The outer end of the rotating ring 6 is fixedly connected to a shaft block 7.

[0022] The central axes of the threaded rod 4, the sliding ring 5, the rotating ring 6 and the shaft block 7 are located in the same straight line.

[0023] In this embodiment, the main body of the cross bag is composed of four extension seats 2 and a device block 1, forming a cross-shaped structure. The four external shaft mechanisms are detachably installed on the outer ends of the four extension seats 2. Since the four external shaft mechanisms are connected to the main body by threaded connections, when one external shaft mechanism is damaged, it can be directly removed and replaced without maintenance operations. In addition, because of the threaded connection, the external extension lengths of multiple external shaft mechanisms can be adjusted, so that the device can be adapted to cross-axis universal couplings of various specifications, thereby improving the versatility of the device.

[0024] Furthermore, a first slot 10 is formed at the inner end of the shaft block 7, a second slot 11 corresponding to the first slot 10 is formed at the outer end of the threaded rod 4, a rotating plate 12 is rotatably connected to the inner end of the second slot 11, and a spring 13 is fixedly connected between the rotating plate 12 and the inner end of the first slot 10.

[0025] The central axes of the shaft block 7, the spring 13, the first slot 10, the second slot 11 and the rotating piece 12 are all located on the same straight line.

[0026] The inner end of the shaft block 7 is fixedly connected with a plurality of limiting protrusions 8 , and the outer end of the threaded rod 4 is provided with a plurality of limiting slots 9 respectively corresponding to and matching with the plurality of limiting protrusions 8 .

[0027] When the spring 13 is not subjected to force, the inner end of the shaft block 7 and the outer end of the threaded rod 4 are not in contact.

[0028] In this embodiment, when the spring 13 is not subjected to force, the inner end of the shaft block 7 and the outer end of the threaded rod 4 are not in contact. At this time, the device is in operation. Since the shaft block 7 and the threaded rod 4 are not in contact, the threaded rod 4 will not be affected during the rotation of the shaft block 7. When the outer shaft mechanism needs to be disassembled or adjusted, the shaft block 7 is pressed in the direction of the threaded rod 4, and the inner end of the shaft block 7 will contact the outer end of the threaded rod 4. Then, the shaft block 7 is rotated until the multiple limit protrusions 8 are respectively inserted into the multiple limit slots 9. At this time, when the shaft block 7 continues to be rotated, the threaded rod 4 can be driven to rotate synchronously, so as to adjust the outer shaft mechanism.

[0029] The working principle and usage process of the utility model: after the utility model is installed, when the external shaft mechanism needs to be disassembled or adjusted, the shaft block 7 is pressed in the direction of the threaded rod 4, and the inner end of the shaft block 7 will contact the outer end of the threaded rod 4, and then the shaft block 7 is rotated until the multiple limit protrusions 8 are respectively inserted into the inside of the multiple limit grooves 9. At this time, when the shaft block 7 continues to be rotated, the threaded rod 4 can be driven to rotate synchronously, so as to adjust the external shaft mechanism.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A maintenance-free cross bag, characterized by: It comprises a device block (1) and a plurality of external shaft mechanisms; Four extension seats (2) are fixedly connected to the outer surface of the device block (1); the four extension seats (2) and the device block (1) together form a cross structure; the outer ends of the plurality of extension seats (2) are provided with threaded holes (3) along their length direction; and the plurality of external shaft mechanisms are respectively arranged inside the plurality of threaded holes (3); The structures of the plurality of external shaft mechanisms are all the same, wherein one of the external shaft mechanisms comprises a threaded rod (4) threadedly connected to the inside of a threaded hole (3), the other end of the threaded rod (4) being slidably connected to a sliding ring (5) along its length direction, the outer surface of the sliding ring (5) being rotatably connected to a rotating ring (6), and the outer end of the rotating ring (6) being fixedly connected to a shaft block (7).

2. A maintenance-free cross bag as claimed in claim 1, characterized in that: Central axes of the threaded rod (4), the sliding ring (5), the rotating ring (6) and the shaft block (7) are located on the same straight line.

3. A maintenance-free cross bag as claimed in claim 1, characterized in that: The inner end of the shaft block (7) is provided with a first slot (10), the outer end of the threaded rod (4) is provided with a second slot (11) corresponding to the first slot (10), the inner end of the second slot (11) is rotatably connected to a rotating plate (12), and a spring (13) is fixedly connected between the rotating plate (12) and the inner end of the first slot (10).

4. A maintenance-free cross bag as claimed in claim 3, characterized in that: Central axes of the shaft block (7), the spring (13), the first slot (10), the second slot (11) and the rotating plate (12) are all located on the same straight line.

5. The maintenance-free cross bag according to claim 1, characterized in that: The inner end of the shaft block (7) is fixedly connected to a plurality of limiting protrusions (8), and the outer end of the threaded rod (4) is provided with a plurality of limiting slots (9) respectively corresponding to and matching the plurality of limiting protrusions (8).

6. A maintenance-free cross bag as claimed in claim 3, characterized in that: When the spring (13) is not subjected to force, the inner end of the shaft block (7) and the outer end of the threaded rod (4) are not in contact.

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