CN110748552B - Pivot connecting device and equipment convenient for replacing pivot - Google Patents
Pivot connecting device and equipment convenient for replacing pivot Download PDFInfo
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- CN110748552B CN110748552B CN201911031476.0A CN201911031476A CN110748552B CN 110748552 B CN110748552 B CN 110748552B CN 201911031476 A CN201911031476 A CN 201911031476A CN 110748552 B CN110748552 B CN 110748552B
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- pivot
- support
- central shaft
- wall
- steel sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention discloses a pivot connecting device and equipment for facilitating pivot replacement. A pivot connecting device comprises a central shaft, a pivot, a support, a rotating steel sleeve and a limiting assembly, wherein the limiting assembly is used for limiting the axial relative position of the pivot and the central shaft, the pivot is sleeved on the central shaft, the rotating steel sleeve is sleeved on the outer wall of the pivot, the support is sleeved on the outer wall of the pivot, and the support and the rotating steel sleeve are arranged in a staggered mode in the axial direction of the pivot. The equipment convenient for replacing the pivot comprises a working device, a supporting device and the pivot connecting device, wherein the working device is connected with the supporting device through the pivot connecting device. In the device and the equipment, the rotating steel sleeve bears the load applied by the working device, so that the pivot is in an unloading state, the pivot can be taken out from the support for replacement by taking down the limiting assembly and the central shaft, and the device and the equipment are simple to operate and convenient to maintain.
Description
Technical Field
The invention relates to the field of mechanical equipment, in particular to a pivot connecting device and equipment convenient for replacing a pivot.
Background
In the technical field of engineering equipment, referring to fig. 2, fig. 2 shows a connection mode of a pivot connection device in the prior art, and the connection mode adopted in the prior art is generally that a working device 6 is connected with a supporting device 7 through a cylindrical pivot 3 and is subjected to rotating friction through a rotating steel sleeve 2. For a large-scale working device, when the cylindrical pivot 3 is worn, the whole large-scale working device 6 needs to be lifted when the cylindrical pivot 3 is replaced, and the cylindrical pivot 3 can be taken out only when the cylindrical pivot 3 is in an unloading state; and dismantle rotatory steel bushing 2 and need hang large-scale equipment 6 and open, just can dismantle rotatory steel bushing 2, lead to the maintenance to consume a large amount of manpower and materials, the operation process is complicated, and the means of maintenance is troublesome, especially to the field or the large-scale equipment of tunnel operation, maintains extremely inconveniently.
Disclosure of Invention
The invention aims to overcome the problem of inconvenience in replacing a pivot in the prior art, and provides a pivot connecting device and equipment for facilitating the replacement of the pivot.
In order to achieve the above purpose, the invention provides the following technical scheme:
in one aspect, the invention provides a pivot connection device, which comprises a central shaft, a pivot, a support, a rotating steel sleeve and a limiting assembly;
the limiting assembly is used for limiting the axial relative position of the pivot and the central shaft;
the pivot is sleeved on the central shaft;
the rotating steel sleeve is sleeved on the outer wall of the pivot;
the support is sleeved on the outer wall of the pivot, and the support and the rotating steel sleeve are arranged in a staggered mode in the axial direction of the pivot.
The working device and the supporting device are connected through the structure, the rotating steel sleeve is fixed on the working device, the outer wall of the support is abutted against the inner wall of the supporting device, the pivot and the central shaft penetrate through the working device and the supporting device, the pivot is sleeved on the central shaft, the end parts of the two ends of the central shaft are matched with the limiting assemblies, the rotating steel sleeve is sleeved on the outer wall of the pivot, the support is sleeved on the outer wall of the pivot and is arranged in a staggered mode with the rotating steel sleeve in the axial direction of the pivot, when the pivot needs to be disassembled, the rotating steel sleeve fixed on the working device bears load applied by the working device, the pivot is in an unloading state, then the limiting assemblies are taken down, and the central shaft is taken out from the pivot, so that the pivot can be taken out from the support.
Preferably, spacing subassembly is equipped with screw thread portion including taut and lock nut on the center pin, and taut and lock nut mutually supports with the center pin, and the tip of taut and lock nut and pivot is mutual to be propped against. Through the structure, the central shaft and the pivot can be fixed together when the locking nut and the thread part of the central shaft are tightened and matched together.
Preferably, the end of the pivot shaft near one end of the limiting assembly is provided with a bolt hole. Through above-mentioned structure, take off spacing subassembly and central axle after, insert the bolt hole with the bolt to outwards the pulling just can take out the pivot from the support, easy operation is convenient, has saved manpower and material resources, easy maintenance.
Preferably, the outer wall of the pivot shaft has a taper, the inner cavity of the support seat is in contact with the outer wall of the pivot shaft, and the shape of the inner cavity of the support seat is matched with the shape of the outer wall of the pivot shaft. Through the structure, when the inner cavity of the support is sleeved on the outer wall of the pivot, the support can limit and clamp the pivot, so that the stability between the pivot and the support can be further ensured; and simultaneously, the conical pivot shaft is very convenient to take out.
On the other hand, the invention also provides equipment convenient for replacing the pivot, which comprises a working device, a supporting device and the pivot connecting device, wherein the working device is connected with the supporting device through the pivot connecting device, the working device is provided with a connecting hole, a cylindrical hollow structure is formed on the supporting device, the axis of the connecting hole is collinear with the axis of the cylindrical hollow structure of the supporting device, the central shaft penetrates through the cylindrical hollow structure and the connecting hole, the rotating steel sleeve is fixedly connected with the working device, and the outer wall of the support is abutted against the inner wall of the cylindrical hollow structure of the supporting device.
Through the structure, the pivot connecting device is connected with the working device and the supporting device, the rotating steel sleeve is fixed on the working device, the outer wall of the support is abutted against the inner wall of the supporting device, the central shaft penetrates through the cylindrical hollow structure of the supporting device and the connecting hole of the working device, the rotating steel sleeve can bear the load applied by the working device and is fixedly connected with the working device, the pivot is ensured to be in an unloading state, the central shaft penetrates through the cylindrical hollow structure and the connecting hole and can be matched with the limiting assembly to limit the position of the pivot, the outer wall of the support is abutted against the inner wall of the supporting device, the axial relative position of the pivot and the support is further stabilized, when the pivot needs to be disassembled, the limiting assembly is screwed down, the central shaft is taken out from the cylindrical hollow structure and the connecting hole, the pivot can be taken down and replaced, and the operation is simple.
Preferably, the number of the connecting holes is two, the two connecting holes are oppositely arranged, and the supporting device is positioned between the two connecting holes. Through the structure, the supporting device is positioned in the two connecting holes of the working device, so that the relative position between the working device and the supporting device is further stabilized.
Preferably, the rotating steel sleeve comprises a cylindrical part and a platform part, the cylindrical part is located in the connecting hole, the platform part is provided with a fixing hole, the working device is provided with a thread groove, a fixing bolt is arranged in the fixing hole, and the fixing bolt is used for being fixedly connected with the thread groove. Through the structure, the fixed connection of the fixing bolt and the thread groove ensures that the rotating steel sleeve and the working device can be fixedly connected.
Preferably, the platform portion is provided with ejection bolt holes. Through the structure, after the fixing bolt is taken down from the fixing hole, the corresponding bolt is screwed into the ejection bolt hole, so that the rotary steel sleeve can be ejected out of the working device and taken down, the operation is simple and convenient, the manpower and material resources are saved, and the maintenance is convenient.
Preferably, be equipped with two step portions in the cylindrical hollow structure, the diameter at cylindrical hollow structure middle part is less than the diameter at both ends, and the quantity of support is two, two step portions respectively with two support butts. With the above configuration, the abutment of the step portion with the holder ensures that the support device can stabilize the axial relative position between the pivot shaft and the holder.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the fixed connection of the rotating steel sleeve and the working device enables the rotating steel sleeve to bear the load applied by the working device, the pivot is in an unloading state, then the central shaft in the limiting assembly and the cylindrical hollow structure is taken down, and the pivot can be taken out from the support by inserting the bolt into the bolt hole at the end part of the pivot and pulling the bolt outwards. The operation method is simple, saves manpower and material resources, saves cost and is very convenient to maintain.
Description of the drawings:
fig. 1 is a schematic structural diagram of a pivot connecting device and an apparatus for facilitating the replacement of a pivot according to the present invention.
Fig. 2 is a schematic view of a prior art pivotal connection.
The labels in the figure are: 1-central shaft, 2-rotating steel sleeve, 3-pivot, 4-support, 5-tensioning and locking nut, 6-working device, 7-supporting device and 8-bolt hole.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Examples
As shown in fig. 1, the present embodiment provides a pivotal connection comprising a central shaft 1, two rotating steel sleeves 2, two pivots 3, two seats 4 and two tightening and locking nuts 5.
Both ends tip of center pin 1 is equipped with screw thread portion, and screw thread portion mutually supports with lock nut 5 with taut, and the central point of pivot 3 puts and is equipped with the through-hole, and the through-hole of two pivots 3 is passed at the both ends of center pin 1, and center pin 1 passes one end tip of the through-hole of pivot 3 and is used for being connected with taut and lock nut 5 detachably, and taut and lock nut 5 and the tip butt of pivot 3 can inject the axial relative position of pivot 3 and center pin 1.
The end part of the pivot 3 close to the tensioning and locking nut 5 is provided with a bolt hole 8, after the tensioning and locking nut 5 and the central shaft 1 are taken out, the pivot 3 can be taken out by inserting the bolt into the bolt hole 8 and pulling outwards, and the operation is simple and convenient.
The two supports 4 are respectively sleeved on the outer walls of the two pivots 3, the inner cavity of each support 4 is provided with a taper, the outer wall of each pivot 3 is provided with a taper, the inner cavity of each support 4 is in separable contact with the outer wall of each pivot 3, the shape of the inner cavity of each support 4 is matched with the shape of the outer wall of each pivot 3, and the stability between each pivot and each support can be further ensured; and simultaneously, the conical pivot shaft is very convenient to take out.
The two rotating steel sleeves 2 are respectively sleeved on the outer walls of the two pivots 3 close to one ends of the tensioning and locking nuts 5, and the rotating steel sleeves 2 can bear loads, so that the pivots 3 are in an unloading state, can be easily taken down from the support 4 and replaced, and is simple and convenient to maintain.
The embodiment also provides equipment convenient for replacing the pivot, which comprises a working device 6, a supporting device 7 and the pivot connecting device, wherein the working device 6 is connected with the supporting device 7 through the pivot connecting device, the working device 6 is provided with two opposite connecting holes, the supporting device 7 is arranged between the two opposite connecting holes, the connecting holes and the supporting device 7 are collinear in the axial direction, the supporting device 7 is used for forming a cylindrical hollow structure, the rotating steel sleeve 2 is provided with a fixing hole and an ejection bolt hole, a fixing bolt is arranged in the fixing hole, the working device 6 is provided with a thread groove, the fixing bolt is used for being fixedly connected with the thread groove of the working device 6, the rotating steel sleeve 2 is ensured to be fixed with the working device 6, the rotating steel sleeve 2 bears the load applied by the working device 6, and after the fixing bolt is taken out, the corresponding bolt is screwed into the ejection bolt hole, the rotary steel sleeve 2 can be ejected out of the working device 6 and taken down, the operation is convenient and simple, and manpower and material resources are saved.
The central shaft 1 passes through the cylindrical hollow structure so that it can cooperate with a tightening and locking nut 5 to further define the axial relative position between the pivot 3 and the support 4.
Two step portions are arranged in the cylindrical hollow structure of the supporting device 7, so that the sizes of two ends of the hollow portion are larger than that of the middle portion, the two supports 4 are respectively abutted against the two step portions, and the relative stability of the axial direction between the pivot shaft 3 and the supports 4 is ensured.
The working device 6 is fixedly connected with the rotating steel sleeve 2, the rotating steel sleeve 2 bears the whole load applied from the working device 6, the pivot 3 is in an unloading state, the tensioning and locking nut 5 is unscrewed, the central shaft 1 is taken out of the pivot 3, a bolt is inserted into a bolt hole 8 at the end part of the pivot 3, and the pivot 3 is taken out of the support 4 by slightly pulling outwards.
The fixing bolt in the thread groove at one side of the working device 6 is taken down, the corresponding bolt is screwed into the ejection bolt hole at the same side, and the rotating steel sleeve 2 is ejected out of the outer wall of the pivot shaft 3 and taken down. After the rotating steel jacket 2 at one side of the working device 6 is removed and replaced, the rotating steel jacket 2 at the other side of the working device 6 is removed and replaced by the same method.
The pivot connecting device and the equipment convenient for replacing the pivot provided by the embodiment of the invention have the beneficial effects that:
the fixing bolt of the rotating steel sleeve 2 is used for being fixedly connected with the thread groove of the working device 6, so that the load applied by the working device 6 is completely born by the rotating steel sleeve 2, and the pivot 3 is in an unloading state.
The tensioning and locking nut 5 is matched with the central shaft 1, the pivot shaft 3 is provided with a through hole, two ends of the central shaft 1 penetrate through the through hole of the pivot shaft 3, the tensioning and locking nut 5 is abutted against the end part of the pivot shaft 3, and the axial relative position between the central shaft 1 and the pivot shaft 3 is limited.
The end part of the pivot 3, close to the tensioning and locking nut 5, is provided with a bolt hole 8, after the tensioning and locking nut 5 and the central shaft 1 are taken down, a bolt is inserted into the bolt hole 8, and the pivot 3 can be taken out from the support 4 by pulling outwards, so that the operation is simple and convenient, the manpower and material resources are saved, and the maintenance is convenient.
The inner cavity of the support 4 has a taper, the outer wall of the pivot shaft 3 has a taper, the inner cavity of the support 4 is detachably separated from the outer wall of the pivot shaft 3, the shape of the inner cavity of the support 4 is matched with the shape of the outer wall of the pivot shaft 3, when the inner cavity of the support 4 is sleeved on the outer wall of the pivot shaft 3, the support 4 can perform limiting and clamping effects on the pivot shaft 3, and the stability between the pivot shaft 3 and the support 4 can be further ensured; and simultaneously, the conical pivot shaft is very convenient to take out.
The working device 6 is provided with a connecting hole, the supporting device 7 is used for forming a cylindrical hollow structure, the connecting hole is used for being detachably connected with the cylindrical hollow structure, the central shaft 1 penetrates through the cylindrical hollow structure, the outer wall of the support 4 is abutted against the inner wall of the supporting device 7, and the stability of the axial relative position between the support 4 and the pivot shaft 3 is ensured.
The support means 7 is provided with a stepped bore comprising two stepped portions for abutment with the support 4. The abutment of the stepped bore with the support 4 ensures that the support means 7 can be stably connected with the support 4 and also ensures that the pivot 3 is relatively stable with the support 4.
The rotating steel sleeve 2 bears all the loads applied by the working device 6, so that the pivot 3 is in an unloading state, the central shaft 1 is taken down by unscrewing the tensioning and locking nut 5, and the pivot 3 can be taken out from the support 4 by inserting the bolt into the bolt hole 8 at the end part of the pivot 3, so that the operation is simple, the cost is saved, and the maintenance is very convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The pivot connecting device is characterized by comprising a central shaft (1), a pivot (3), a support (4), a rotating steel sleeve (2) and a limiting assembly, wherein the limiting assembly is arranged at the end parts of two ends of the central shaft (1);
the limiting component is used for limiting the axial relative position of the pivot (3) and the central shaft (1);
the pivot (3) is sleeved on the central shaft (1);
the rotating steel sleeve (2) is sleeved on the outer wall of the pivot (3);
the support (4) is sleeved on the outer wall of the pivot (3), and the support (4) and the rotating steel sleeve (2) are arranged in a staggered mode in the axial direction of the pivot (3).
2. A pivot connection according to claim 1, characterized in that the limiting assembly comprises a tightening and locking nut (5), the central shaft (1) is provided with a threaded portion, the tightening and locking nut (5) cooperates with the central shaft (1), and the tightening and locking nut (5) abuts against the end of the pivot (3).
3. A pivotal connection according to claim 1, wherein the end of the pivot shaft (3) adjacent one end of the stop assembly is provided with a bolt hole (8).
4. A pivot connection according to claim 1, characterized in that the outer wall of the pivot (3) is tapered, the inner cavity of the seat (4) is in contact with the outer wall of the pivot (3), and the shape of the inner cavity of the seat (4) is adapted to the shape of the outer wall of the pivot (3).
5. An apparatus for facilitating the replacement of a pivot, characterized in that it comprises a working device (6), a supporting device (7) and a pivot connection device according to any one of claims 1 to 4, the working device (6) is connected with the supporting device (7) through the pivot connection device, a connection hole is provided on the working device (6), a cylindrical hollow structure is formed on the supporting device (7), the axis of the connection hole is collinear with the axis of the cylindrical hollow structure of the supporting device (7), the central shaft (1) passes through the cylindrical hollow structure and the connection hole, the rotating steel sleeve (2) is fixedly connected with the working device (6), the outer wall of the support (4) is abutted against the inner wall of the cylindrical hollow structure of the supporting device (7).
6. An apparatus for facilitating the replacement of a pivot according to claim 5, characterised in that the number of said attachment holes is two, two of said attachment holes being located opposite each other, said support means (7) being located between two of said attachment holes.
7. An apparatus for facilitating the replacement of a pivot according to claim 5, characterized in that the rotating steel sleeve (2) comprises a cylindrical portion and a platform portion, the cylindrical portion is located in the connecting hole, the platform portion is provided with a fixing hole, the working device (6) is provided with a threaded groove, and a fixing bolt is arranged in the fixing hole and is used for being fixedly connected with the threaded groove.
8. An apparatus for facilitating replacement of a pintle as claimed in claim 7, wherein the platform portion is provided with ejector bolt holes.
9. An apparatus for facilitating the replacement of a pivot according to claim 5, characterized in that two steps are provided in the cylindrical hollow structure, the diameter of the central part of the cylindrical hollow structure is smaller than the diameter of the two end parts, the number of the supports (4) is two, and the two steps are respectively abutted with the two supports (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031476.0A CN110748552B (en) | 2019-10-28 | 2019-10-28 | Pivot connecting device and equipment convenient for replacing pivot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031476.0A CN110748552B (en) | 2019-10-28 | 2019-10-28 | Pivot connecting device and equipment convenient for replacing pivot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110748552A CN110748552A (en) | 2020-02-04 |
| CN110748552B true CN110748552B (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911031476.0A Active CN110748552B (en) | 2019-10-28 | 2019-10-28 | Pivot connecting device and equipment convenient for replacing pivot |
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| CN (1) | CN110748552B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202646348U (en) * | 2012-07-09 | 2013-01-02 | 中联重科物料输送设备有限公司 | Hinging element |
| CN106181856B (en) * | 2016-07-11 | 2017-12-12 | 徐州徐工基础工程机械有限公司 | A kind of dismounting hinge pin method |
| RU170654U1 (en) * | 2016-08-22 | 2017-05-03 | Закрытое акционерное общество "Производственное предприятие "Урал" | SCREW REMOVER |
| CN107932400B (en) * | 2017-09-30 | 2019-07-19 | 武汉船用机械有限责任公司 | A kind of axis disassembling fixture and the method for dismantling axis |
| CN109227467A (en) * | 2018-11-09 | 2019-01-18 | 苏州科峰英诺传动技术有限公司 | Expansion type extracting tool and its method for dismounting |
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