Multi-purpose quick-change positioning device with limit

Abstract

The present invention belongs to the field of precise positioning transmission mechanism, and in particular, relates to a multi-purpose positioning device with limit and quick change. It includes a guide bracket arranged in a tubular shape and a conical core shaft sleeved in the guide bracket, the diameter of one end of the conical core shaft is larger than that of the guide bracket, and the other end extends out of the guide bracket, a conical guide block is arranged on the outside of the guide bracket, and a guide hole for placing the conical guide block is arranged on the guide bracket, the conical guide block is arranged in contact with the conical core shaft, the conical guide blocks are evenly distributed on the guide bracket in an annular shape, and a locking outer ring is sleeved on the periphery of the conical guide block. The present invention adopts a multi-group combined structure, which can realize rapid locking and positioning, facilitate modular loading and unloading, ensure installation accuracy, and can be interchangeable. The work efficiency is greatly improved, it can be applied to various working conditions, ensures the positioning accuracy of the shaft hole, and has sufficient structural rigidity.

Description

Technical Field

[0001] The invention belongs to the field of precise positioning transmission mechanisms, and in particular relates to a multi-purpose positioning device with limited position and quick change. Background Art

[0002] In the fields of equipment and machinery, positioning and transmission are usually achieved through pins. Pins are usually designed in various shapes and made of various materials. The working conditions are divided into dynamic loads and static loads. The widely used hole matching positioning devices are pins. They are mainly machined to control the machining tolerance of the pin and the shaft hole to a transition fit for hole matching positioning. They are used in various industries. They are conventional devices in mechanical devices and are reliable and stable.

[0003] In the prior art, the pins need to be loaded and unloaded through auxiliary measures such as cooling or heating the shaft hole. In some cases, other mechanical equipment is needed to complete the loading and unloading, which cannot be achieved by manual labor alone. In addition, under working conditions that require rapid disassembly and assembly, precise positioning, etc., the traditional pins cannot meet the requirements well. It mainly has the disadvantages of slow disassembly and assembly speed and inconvenient use. At present, many equipments require modular assembly, which cannot be achieved due to the limitations of traditional pins. Summary of the invention

[0004] In view of the technical problem that the pin shaft cannot be quickly assembled and unassembled and accurately positioned, the present invention proposes a multi-purpose quick-change positioning device with limit, which has a reasonable design, simple structure, low cost, can be easily replaced and can accurately position.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention provides a multi-purpose quick-change positioning device with a limit, comprising a guide bracket arranged in a tubular shape and a conical core shaft sleeved in the guide bracket, the diameter of one end of the conical core shaft is larger than that of the guide bracket, and the other end extends out of the guide bracket, a conical guide block is arranged on the outer side of the guide bracket, a guide hole for placing the conical guide block is arranged on the guide bracket, the conical guide block is contacted and cooperated with the conical core shaft, the conical guide blocks are evenly distributed on the guide bracket in an annular shape, a locking outer ring is sleeved on the outer periphery of the conical guide block, the locking outer ring comprises a plurality of outer ring sheets connected to each other, a sliding groove is arranged on the inner wall of the outer ring sheet, the conical guide block is slidably fixed in the sliding groove, and a locking nut is sleeved on the end of the conical core shaft extending out of the guide bracket, and the locking nut is contacted with the guide bracket.

[0006] Preferably, a limiting hole and an axial pin hole perpendicular to the limiting hole are provided on one side of the outer ring plate close to the locking nut, the axial pin hole and the tapered core shaft are provided in the same direction, a limiting pin is provided in the limiting hole, a limiting pin locking rod is provided in the axial pin hole, the limiting pin locking rod is sleeved in the limiting pin, a notch for lifting and lowering the limiting pin is provided on the limiting pin locking rod, and a control spring is provided between the axial pin holes of the limiting pin locking rod.

[0007] Preferably, both ends of the conical guide block are provided with reset grooves, and reset springs are installed in the reset grooves.

[0008] Preferably, a fixing hole is provided in the middle of the conical guide block, a fixing spring is provided in the fixing hole, a locking protrusion is connected to the end of the fixing spring, and a locking hole matching the locking protrusion is provided on the locking outer ring.

[0009] Preferably, the limit pin locking rod extends out of the axial pin hole, a limit fixing ring is sleeved on the locking nut, and the limit pin locking rod is arranged in contact with the limit fixing ring.

[0010] Preferably, the outer ring piece includes an outer ring piece body and a connecting protrusion arranged on one side of the outer ring piece body, and the other side of the outer ring piece body is provided with a connecting groove matching with the connecting protrusion.

[0011] Preferably, a distance limiting hole is provided at the bottom of the connecting groove, a distance limiting spring is provided in the distance limiting hole, a distance limiting block is provided at the end of the distance limiting spring, the distance limiting block partially extends out of the distance limiting hole, and a through hole matching the distance limiting block is provided in the connecting protrusion.

[0012] Preferably, an anti-loosening device is further provided at one end of the locking nut away from the guide bracket.

[0013] Preferably, a dust cover is further provided on the conical core shaft, the dust cover wraps the locking nut and the anti-loosening device, and the limiting fixing ring is sleeved on the dust cover.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] The present invention adopts a multi-group combination structure, which can achieve rapid locking and positioning, facilitate modular loading and unloading, ensure installation accuracy, and can be interchanged. The work efficiency is greatly improved, and it can be applied to various working conditions, ensuring the positioning accuracy of the shaft hole, while having sufficient structural rigidity. Therefore, it has good adaptability to complex application conditions such as equipment and machinery pins, and solves the installation and use requirements of working conditions where it is difficult to replace the pins and working conditions where the positioning accuracy is high. The device has a precise structure, is easy to operate, has high efficiency, and has low maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a multi-purpose quick-change positioning device with limit provided in Example 1;

[0018] Figure 2 A cross-sectional view of the multi-purpose quick-change positioning device with limit provided in Example 1;

[0019] Figure 3 A side sectional view of the multi-purpose quick-change positioning device with limit provided in Example 1;

[0020] Figure 4 A partial side sectional view of the multi-purpose quick-change positioning device with limit provided in Example 1;

[0021] Figure 5 A schematic diagram of the partial structure of the multi-purpose quick-change positioning device with limit provided in Example 1;

[0022] In the above figures, 1. guide bracket; 2. conical core shaft; 3. conical guide block; 31. reset groove; 32. reset spring; 33. fixing hole; 34. fixing spring; 35. locking protrusion; 4. locking outer ring; 41. outer ring plate; 411. outer ring plate body; 412. connecting protrusion; 413. connecting groove; 414. distance limit hole; 415. distance limit spring; 416. distance limit block; 417. through hole; 42. locking hole; 43. sliding groove; 44. limiting hole; 45. axial pin hole; 5. locking nut; 6. limiting pin; 7. limiting pin locking rod; 8. limiting fixing ring; 9. anti-loosening device; 10. dust cover. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] Embodiment 1, as Figure 1 to Figure 5As shown, this embodiment provides a multi-purpose positioning device with a limit and a quick change, which is intended to solve the technical problem that the pin shaft cannot be quickly loaded and unloaded and accurately positioned in the existing mechanical assembly structure. To this end, the multi-purpose positioning device with a limit and a quick change provided by this embodiment includes a guide bracket 1 arranged in a tubular shape and a conical mandrel 2 sleeved in the guide bracket 1. The diameter of one end of the conical mandrel 2 is larger than that of the guide bracket 1, and the other end extends out of the guide bracket 1. In this embodiment, the conical mandrel 2 can be regarded as a three-part structure, a conical part and a connecting part arranged on both sides of the conical part. In this embodiment, the connecting part at one end close to the large diameter of the conical part is arranged in a prismatic shape, and the connecting part at the other end is arranged. The purpose of such arrangement is to facilitate connection. A conical guide block 3 is arranged on the outside of the guide bracket 1, and a guide hole for placing the conical guide block 3 is arranged on the guide bracket 1. In this embodiment, the conical guide block 3 is arranged in a key shape as a whole, and the guide hole has the function of fixing the conical guide block 3. The conical guide block 3 is arranged in contact with the conical core shaft 2, that is, the contact surface between the conical guide block 3 and the conical core shaft 2 is also arranged in a conical surface.

[0026] In order to ensure the stability of the entire structure, the conical guide blocks 3 are evenly distributed on the guide bracket 1 in an annular shape. In this embodiment, a total of 6 conical guide blocks 3 are provided, and the central angle between adjacent conical guide blocks 3 is 60°. In order to achieve the purpose of the pin shaft effect, a locking outer ring 4 is sleeved on the periphery of the conical guide block 3. The main purpose of the locking outer ring 4 is to open it to achieve the connection with the pin shaft hole and ensure fixation. To this end, the locking outer ring 4 includes a plurality of outer ring pieces 41 that are connected to each other. In order to fix the outer ring piece 41 with the entire device, a sliding groove 43 is provided on the inner wall of the outer ring piece 41. In this embodiment, the sliding groove 43 is arranged in a T-shape. The conical guide block 3 is slidably fixed in the sliding groove 43. Through the arrangement, the conical guide block 3 and the locking outer ring 4 are connected. A locking nut 5 is sleeved on the end of the conical core shaft 2 extending outside the guide bracket 1, and the locking nut 5 is arranged in contact with the guide bracket 1.

[0027] Through the above-mentioned setting, after the device is placed into the pin shaft hole, the locking nut 5 is rotated. Due to the limiting effect of the guide bracket 1, the locking nut 5 cannot move, but the conical core shaft 2 is driven to move in the direction of the locking nut 5. As the diameter of the conical core shaft 2 becomes larger and larger, the conical guide block 3 moves toward the locking outer ring 4, thereby expanding the diameter of the locking outer ring 4 and completing the fixation.

[0028] Considering that after the device is placed into the pin shaft hole, since the diameter of the pin shaft hole is larger than the diameter of the device, when rotating the locking nut 5, it is necessary to hold the position of the entire device by hand or use other tools before it can be rotated. In order to simplify the process and achieve the purpose of convenient installation, a limiting hole 44 and an axial pin hole 45 perpendicular to the limiting hole 44 are provided on the side of the outer ring 41 close to the locking nut 5. The axial pin hole 45 and the tapered core shaft 2 are arranged in the same direction. A limiting pin 6 is provided in the limiting hole 44, and a limiting pin locking rod 7 is provided in the axial pin hole 45. The limiting pin lock The stop rod 7 is sleeved in the limit pin 6, and a notch for lifting the limit pin 6 is provided on the limit pin locking rod 7. A control spring (not marked in the figure) is provided between the limit pin locking rod 7 and the axial pin hole 45. In this embodiment, the notch is in an acute angle shape. The limit pin 6 includes two parts, the top is cylindrical and the bottom is frame-shaped. The limit pin locking rod 7 passes through the frame-shaped part. In this way, under the action of the control spring, the limit pin locking rod 7 pushes the limit pin 6 outward so that it can be in close contact with the pin shaft hole, thereby achieving the fixation of the entire device, thereby facilitating the tightening of the locking nut 5. At least two limit pins 6 are provided. In this embodiment, each outer ring sheet 41 is provided with a limit hole 44 on the left and right.

[0029] In order to ensure that the conical guide block 3 is set tightly against the conical core shaft 2, reset grooves 31 are set at both ends of the conical guide block 3, and a reset spring 32 is installed in the reset groove 31. The reset spring 32 is a spring coil. Under the action of the spring coil, the conical guide block 3 will be tightly contacted with the conical core shaft 2.

[0030] In order to prevent the locking outer ring 4 from sliding off the conical guide block 3 when the device is not in use, a fixing hole 33 is provided in the middle of the conical guide block 3, a fixing spring 34 is provided in the fixing hole 33, a locking protrusion 35 is connected to the end of the fixing spring 34, and a locking hole 42 matching the locking protrusion 35 is provided on the locking outer ring 4. In the present embodiment, the locking protrusion 35 is spherical, and the structure here is similar to the structural design of the folding rod of the existing umbrella. The locking protrusion 35 is stuck to ensure the relative fixation of the locking outer ring 4 and the conical guide block 3. Since the locking outer ring 4 needs to expand, the conical guide block 3 moves relative to the locking outer ring 4. Therefore, the locking protrusion 35 is designed to be spherical. Of course, it can also be triangular.

[0031] In order to maintain the state of the limit pin 6, in the present embodiment, the limit pin locking rod 7 is extended out of the axial pin hole 45, and a limit fixing ring 8 is mounted on the locking nut 5. The limit pin locking rod 7 is contacted with the limit fixing ring 8. Through the action of the limit fixing ring 8, the state of the limit pin locking rod 7 is maintained, thereby achieving the purpose of maintaining the limit pin 6.

[0032] In order to improve the connection effect of the outer ring piece 41, in the present embodiment, the outer ring piece 41 includes an outer ring piece body 411 and a connection protrusion 412 arranged on one side of the outer ring piece body 411, and a connection groove 413 matching with the connection protrusion 412 is arranged on the other side of the outer ring piece body 411. Through the insertion connection method, under the action of the conical guide block 3, the locking outer ring 4 maintains a columnar state.

[0033] In order to prevent the outer ring piece 41 from expanding too much and causing the connection to separate, a limited distance hole 414 is set at the bottom of the connection groove 413, and a limited distance spring 415 is set in the limited distance hole 414. A limited distance block 416 is set at the end of the limited distance spring 415. The limited distance block 416 partially extends out of the limited distance hole 414, and a through hole 417 matching the limited distance block 416 is set in the connection protrusion 412. The structure here is similar to the structural setting of the fixed spring 34. Its purpose is to make the expansion distance of the outer ring piece 41 be within the distance from the limited distance block 416 to the inner wall of the through hole 417, thereby achieving the purpose of limiting the expansion range.

[0034] In order to prevent the locking nut 5 from loosening and causing danger, an anti-loosening device 9 is provided at the end of the locking nut 5 away from the guide bracket 1. In the present embodiment, the anti-loosening device 9 is a thin nut. The thin nut can effectively improve the loosening effect. Of course, the anti-loosening device 9 can also be other nuts.

[0035] In order to further achieve the purpose of relaxation, a dust cover 10 is also provided on the conical core shaft 2, and the dust cover 10 wraps the locking nut 5 and the anti-loosening device 9. At the same time, the limiting fixing ring 8 is mounted on the dust cover 10, thus playing a three-layer protection role.

[0036] Through the above-mentioned arrangement, when in use, first use the limit pin 6 to fix it in the pin shaft hole, and then rotate the locking nut 5 to make the locking outer ring 4 expand to achieve the purpose of tightening the pin shaft hole, and then install the anti-loosening device 9, the dust cover 10 and the limit fixing ring 8 to complete the fixing work of the entire structure. When disassembly is required, the limit fixing ring 8, the dust cover 10 and the anti-loosening device 9 are removed in turn, and the locking nut 5 is rotated in the opposite direction. Under the action of the reset spring 32, the device is removed. The whole process requires cooling and heating. Through this, the connection and fixation of the pin shaft hole within a certain error range can be determined to ensure precise fixation.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A multi-purpose positioning device with limited quick change, characterized in that: It includes a guide bracket arranged in a tubular shape and a conical core shaft sleeved in the guide bracket, the diameter of one end of the conical core shaft is larger than that of the guide bracket, and the other end extends out of the guide bracket, a conical guide block is arranged on the outer side of the guide bracket, a guide hole for placing the conical guide block is arranged on the guide bracket, the conical guide block is contacted and matched with the conical core shaft, the conical guide blocks are evenly distributed on the guide bracket in an annular shape, a locking outer ring is sleeved on the periphery of the conical guide block, the locking outer ring includes a plurality of outer ring pieces connected to each other, a sliding groove is arranged on the inner wall of the outer ring piece, the conical guide block is slidably fixed in the sliding groove, and a locking nut is sleeved on the end of the conical core shaft extending out of the guide bracket, and the locking nut is contacted with the guide bracket.

2. The multi-purpose quick-change positioning device with limit position according to claim 1, characterized in that: A limiting hole and an axial pin hole perpendicular to the limiting hole are provided on one side of the outer ring plate close to the locking nut. The axial pin hole and the tapered core shaft are provided in the same direction. A limiting pin is provided in the limiting hole. A limiting pin locking rod is provided in the axial pin hole. The limiting pin locking rod is sleeved in the limiting pin. A notch for lifting the limiting pin is provided on the limiting pin locking rod. A control spring is provided between the axial pin holes of the limiting pin locking rod.

3. The multi-purpose quick-change positioning device with limit position according to claim 2, characterized in that: Both ends of the conical guide block are provided with reset grooves, and reset springs are sleeved in the reset grooves.

4. The multi-purpose quick-change positioning device with limit position according to claim 3, characterized in that: A fixing hole is arranged in the middle of the conical guide block, a fixing spring is arranged in the fixing hole, a locking protrusion is connected to the end of the fixing spring, and a locking hole matching with the locking protrusion is arranged on the locking outer ring.

5. The multi-purpose quick-change positioning device with limit position according to claim 4, characterized in that: The limit pin locking rod extends out of the axial pin hole, a limit fixing ring is sleeved on the locking nut, and the limit pin locking rod is contacted with the limit fixing ring.

6. The multi-purpose quick-change positioning device with limit position according to claim 5, characterized in that: The outer ring piece comprises an outer ring piece body and a connecting protrusion arranged on one side of the outer ring piece body, and the other side of the outer ring piece body is provided with a connecting groove matched with the connecting protrusion.

7. The multi-purpose quick-change positioning device with limit position according to claim 6, characterized in that: A distance limiting hole is arranged at the bottom of the connecting groove, a distance limiting spring is arranged in the distance limiting hole, a distance limiting block is arranged at the end of the distance limiting spring, the distance limiting block partially extends out of the distance limiting hole, and a through hole matching the distance limiting block is arranged in the connecting protrusion.

8. The multi-purpose quick-change positioning device with limit position according to claim 7, characterized in that: An anti-loosening device is also arranged at one end of the locking nut away from the guide bracket.

9. The multi-purpose quick-change positioning device with limit position according to claim 8, characterized in that: The conical mandrel is also provided with a dust cover, which wraps the locking nut and the anti-loosening device, and the limiting fixing ring is sleeved on the dust cover.

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