CN219058367U - Pin pulling support - Google Patents
Pin pulling support Download PDFInfo
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- CN219058367U CN219058367U CN202223573613.3U CN202223573613U CN219058367U CN 219058367 U CN219058367 U CN 219058367U CN 202223573613 U CN202223573613 U CN 202223573613U CN 219058367 U CN219058367 U CN 219058367U
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- pin shaft
- pin
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- support
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Abstract
The utility model discloses a pin pulling bracket which comprises a joint, a lining plate and an annular bracket. The centers of the joints at the two sides are provided with round pin shaft round holes, and the circumference of the lining plate is coaxially arranged on one side joint at the periphery of the round pin shaft round holes. The annular supports are arranged in two, and the two annular supports are coaxial and symmetrically arranged above the lining plate. The pin pulling support further comprises a pin shaft and a pin pulling connecting bolt. The pin shaft is coaxially inserted into the round hole of the pin shaft, and the pin pulling connecting bolt is coaxially arranged at the center of the cylindrical surface on one side of the pin shaft. The annular support comprises fixing bolt holes, the fixing bolt holes are radially formed in the upper end of the annular support, the fixing bolt holes in the annular supports on the two sides are symmetrically distributed, the fixing bolt holes are matched with the fixing bolts, and the fixing bolts are used for providing axial limiting work for the pin shaft in the whole pin shaft assembling and disassembling process. The utility model can provide support and guide work for the pin shaft in the process of assembling and disassembling the pin shaft, thereby replacing a guide rod with longer length, reducing the design length of the pin pulling connecting bolt and having simple and compact structure.
Description
Technical Field
The utility model relates to the field of crawler cranes, in particular to a pin pulling bracket.
Background
The crawler crane is mechanical equipment which adopts a crawler walking chassis and can lift heavy objects to a certain height. The arm support is used as a main structural member of the crane, the weight and the convenience of assembly influence the performance and the use feeling of the whole crane, the arm support is formed by combining arm sections with various shapes, ten arm sections are often needed for one set of arm support, and the connection between the arm sections becomes the key work of assembling the arm support.
The existing pin pulling support is longer in overall structure due to the width of the arm section, when the width of the arm section is allowed, the pin pulling action can be easily achieved, but when the width of the arm section is limited, or the use space is narrow, the existing pin pulling support is required to be provided with a guide rod exceeding the pin pulling action stroke length of the pin shaft, so that the length of the pin shaft axial direction occupied by the whole pin pulling support is larger, the pin pulling action cannot be achieved, the auxiliary pin pulling cannot be carried out by using the oil cylinder, and convenience is reduced.
What is needed is a pin pulling support which can provide support and guide work for a pin in the process of assembling and disassembling the pin, so that a guide rod with a longer length is replaced, the design length of a pin pulling connecting bolt is reduced, the whole structure is simple and compact, and the use convenience of a device is improved.
Disclosure of Invention
The utility model aims to solve the technical problems of the prior art, and provides the pin pulling support which can provide support and guide work for a pin shaft in the process of assembling and disassembling the pin shaft, so that a guide rod with a longer length is replaced, the design length of a pin pulling connecting bolt is reduced, the whole structure is simple and compact, and the operation is easy.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a pin pulling support comprises a joint, a lining plate and an annular support.
The centers of the joints at the two sides are provided with round pin shaft round holes, and the circumference of the lining plate is coaxially arranged on one side joint at the periphery of the round pin shaft round holes.
The annular supports are arranged in two, and the two annular supports are coaxial and symmetrically arranged above the lining plate.
The pin pulling support further comprises a pin shaft and a pin pulling connecting bolt.
The pin shaft is coaxially inserted into the round hole of the pin shaft, and the pin pulling connecting bolt is coaxially arranged at the center of the cylindrical surface on one side of the pin shaft.
The axial length of the pin shaft is l 1 The length of the pin pulling connecting bolt is l 2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein:
the annular support comprises fixing bolt holes, the fixing bolt holes are radially formed in the upper end of the annular support, the fixing bolt holes in the annular supports on the two sides are symmetrically distributed, the fixing bolt holes are matched with the fixing bolts, and the fixing bolts are used for providing axial limiting work for the pin shaft in the whole pin shaft assembling and disassembling process.
The shortest distance between the two annular supports is l 3 The diameter of the pin shaft is d 1 The method comprises the steps of carrying out a first treatment on the surface of the Wherein: 1.1l 3 ＜d 1 ＜1.3l 3 。
The corresponding diameter of the inner wall of the annular bracket is d 2 Wherein d is 2 Greater than d 1 The gap of the die is 2 mm-3 mm.
The annular support is Q345 material, and the wall thickness of the annular support is h, wherein:
the utility model has the following beneficial effects:
1. according to the utility model, the annular brackets are symmetrically arranged at the front ends of the connectors, so that guiding work in the advancing process of the oil cylinder can be provided for the assembling and disassembling work of the pin shafts, and the pin shafts can be further subjected to axial limiting work through the fixing bolts additionally arranged on the annular brackets. On one hand, the use of the annular bracket replaces a guide rod with a longer length in the existing bracket, so that the working space in the axial direction in the assembling and disassembling process of the pin shaft is shortened to a great extent, and when the width of the arm section is limited or the use space is narrow, the utility model can realize synchronous installation of two sides of the arm section by utilizing the characteristic of occupying smaller working space; on the other hand, the use of the annular support simplifies the hoisting reference link of the existing pin shaft in the loading and unloading process, can provide simpler operation steps for staff, and improves the convenience of device use.
Drawings
Fig. 1 is a schematic structural view of a pin pulling bracket before assembling with a pin shaft.
Fig. 2 shows a schematic structural diagram of the pin pulling bracket assembled with the pin shaft.
The method comprises the following steps:
10. a joint; 11. round pin axle hole;
20. a lining plate;
30. an annular bracket; 31. a fixing bolt hole; 32. a fixing bolt;
40. a pin shaft;
50. and (5) pulling out the pin connecting bolt.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present utility model, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present utility model. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present utility model.
As shown in fig. 1 and 2, a pin pulling bracket includes a joint 10, a liner 20, and an annular bracket 30.
The centers of the joints at the two sides of the pin pulling support are provided with round pin shaft holes 11, and the circumference of the lining plate is coaxially arranged on one side joint at the periphery of the round pin shaft holes. The round pin axle hole cooperates with the round pin axle 40, plays auxiliary work to the assembly of crane jib festival.
Wherein the annular supports are arranged in two, and the two annular supports are coaxial and symmetrically arranged above the lining plate. The whole outline of the annular bracket is consistent with the pin shaft, and the annular bracket is mainly used for providing guiding work in the advancing process of the oil cylinder for the pin shaft loading and unloading work.
The existing pin pulling support is required to be provided with a guide rod exceeding the pin pulling action stroke length of the pin, when the pin is lifted and positioned, the rear end of the pin is attached to a pin round hole, the guide rod arranged on the cylindrical surface of the front end of the pin enables the overall axial length of the pin and the guide rod to exceed more than twice the actual axial length of the pin, and the auxiliary oil cylinder required by assembling and disassembling the pin is added, so that the existing pin pulling support cannot be suitable for working environments such as limited arm section width or narrow use space, and convenience in use of the device is greatly reduced.
The annular support in the embodiment can guide the pin shaft without occupying the axial working space of the pin shaft, thereby replacing a guide rod with a longer length. At this time, the pin shaft can be disassembled and assembled by only adopting the pin pulling connecting bolt 50 with the length matched with the auxiliary oil cylinder. The pin pulling connecting bolt is coaxially arranged at the center of the cylindrical surface at one side of the pin shaft. Let the axial length of the pin shaft be l 1 The length of the pin pulling connecting bolt is l 2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein l 2 Can satisfy:
therefore, the working space in the axial direction in the pin shaft assembling and disassembling process is shortened to a great extent, and when the width of the arm joint is limited or the use space is narrow, the utility model can realize synchronous installation of the two sides of the arm joint by utilizing the characteristic of small occupied working space.
Because the axial direction of the pin shaft is in the horizontal plane in the actual loading and unloading process, workers need to hoist the pin shaft in the vertical direction. In the present embodiment of the present utility model,the staff can promote the round pin axle to annular support height to place the round pin axle in the annular support, the annular support body can provide the vertical direction for the round pin axle and support work. Under normal conditions, the diameter of a pin shaft for installing the crawler crane arm section is about 160mm, the weight is about 50kg, and the annular support can facilitate the lifting and positioning work of workers. In the embodiment, the annular bracket is made of Q345 steel material, the wall thickness of the annular bracket is h, and the diameter of the pin shaft is d 1 Wherein the preferred range of h should satisfy:
the reliability of the annular bracket in supporting work is ensured.
The annular support is further provided with fixing bolt holes 31 which are radially formed in the upper end of the annular support, the fixing bolt holes in the annular supports on the two sides are symmetrically distributed, the fixing bolt holes are matched with the fixing bolts 32, the fixing bolts are used for providing axial limiting work for the pin shaft in the whole pin shaft assembling and disassembling process, and the fixing bolts only need to be detached when the pin shaft is taken out or put in from the annular support. The arrangement of the fixing bolt holes is further convenient for the annular support to play a supporting role on the pin shaft.
When the annular bracket guides the pin shaft, a certain gap is reserved between the annular bracket and the pin shaft, so that the corresponding diameter of the inner wall of the annular bracket is d 2 Wherein d is 2 Greater than d 1 The gap of (2) is preferably set to 2mm to 3mm.
Considering that friction problem exists between the pin shaft and the annular support, the contact area between the annular support and the pin shaft should be reduced on the basis that the annular support meets the requirement of guiding and supporting the pin shaft, in this embodiment, two annular supports which are symmetrically distributed are preferably adopted, so that the shortest distance between the two annular supports is l 3 The diameter of the pin shaft is d 1 The method comprises the steps of carrying out a first treatment on the surface of the Wherein l 3 The preferred design range of (2) is: 1.1l 3 ＜d 1 ＜1.3l 3 。
The preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the equivalent changes belong to the protection scope of the present utility model.
Claims (6)
1. The utility model provides a pull out round pin support which characterized in that: comprises a joint, a lining plate and an annular bracket;
the centers of the joints at the two sides are provided with round pin shaft round holes, and the lining plate is circumferentially and coaxially arranged on one side joint at the periphery of the round pin shaft round holes;
the annular supports are arranged in two, and the two annular supports are coaxial and symmetrically arranged above the lining plate.
2. The pin pulling mount of claim 1, wherein: the device also comprises a pin shaft and a pin pulling connecting bolt;
the pin shaft is coaxially inserted into the round hole of the pin shaft, and the pin pulling connecting bolt is coaxially arranged at the center of the cylindrical surface on one side of the pin shaft;
the axial length of the pin shaft is l 1 The length of the pin pulling connecting bolt is l 2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein:
3. the pin pulling mount of claim 1, wherein: the annular support comprises fixing bolt holes, the fixing bolt holes are radially formed in the upper end of the annular support, the fixing bolt holes in the annular supports on the two sides are symmetrically distributed, the fixing bolt holes are matched with the fixing bolts, and the fixing bolts are used for providing axial limiting work for the pin shaft in the whole pin shaft assembling and disassembling process.
4. The pin pulling mount of claim 1, wherein: the shortest distance between the two annular supports is l 3 The diameter of the pin shaft is d 1 The method comprises the steps of carrying out a first treatment on the surface of the Wherein: 1.1l 3 ＜d 1 ＜1.3l 3 。
5. The pin pulling bracket of claim 1, whereinThe method comprises the following steps: the corresponding diameter of the inner wall of the annular bracket is d 2 Wherein d is 2 Greater than d 1 The gap of the die is 2 mm-3 mm.
6. The pin pulling mount of claim 1, wherein: the annular support is made of Q345 steel, the wall thickness of the annular support is h, and the wall thickness of the annular support is equal to h:
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223573613.3U CN219058367U (en) | 2022-12-30 | 2022-12-30 | Pin pulling support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223573613.3U CN219058367U (en) | 2022-12-30 | 2022-12-30 | Pin pulling support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219058367U true CN219058367U (en) | 2023-05-23 |
Family
ID=86370419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223573613.3U Active CN219058367U (en) | 2022-12-30 | 2022-12-30 | Pin pulling support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219058367U (en) |
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2022
- 2022-12-30 CN CN202223573613.3U patent/CN219058367U/en active Active
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