CN216577654U - Bush press-fitting tool - Google Patents
Bush press-fitting tool Download PDFInfo
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- CN216577654U CN216577654U CN202122639085.6U CN202122639085U CN216577654U CN 216577654 U CN216577654 U CN 216577654U CN 202122639085 U CN202122639085 U CN 202122639085U CN 216577654 U CN216577654 U CN 216577654U
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- rod
- fitting tool
- piston rod
- sleeve
- mandrel
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Abstract
The utility model relates to a tooling tool, which aims to solve the problem that a piston rod of an oil cylinder in the conventional bushing press-fitting tool is easy to damage due to easy collision and abrasion; the rod component is coaxially arranged with the hydraulic oil cylinder, one end of the rod component is fixedly connected with the cylinder head of the hydraulic oil cylinder, and the other end of the rod component extends out of the central through hole of the piston rod component; the second pressing sleeve tool is installed at the outer end of the rod component, and the first pressing sleeve tool is installed at the outer end of a piston rod of the hydraulic oil cylinder. In the utility model, the first sleeve pressing tool is arranged at the end part of the piston rod, when the bushing is pressed, the outer surface of the piston rod is not contacted with the first sleeve pressing tool, and the piston rod is not deep into the pin shaft hole, so that the piston rod is not damaged by being damaged or rubbed and scratched when in use.
Description
Technical Field
The utility model relates to a tool, in particular to a bushing press-fitting tool.
Background
On the engineering machinery, two rotating parts are rotatably connected through a pin shaft, for example, a steel bushing and a T-shaped steel bushing are pressed in pin shaft holes of a front support and a middle support of a bucket rod of an excavator, and abrasion of joints of the bucket rod and a rocker is reduced.
The existing bushing press-fitting tool mainly comprises a hydraulic oil cylinder, as shown in fig. 1, a connecting rod 3 is coaxially and fixedly connected to the outer end of a piston rod 2 of the hydraulic oil cylinder 1, a second press-fitting tool 5 is installed at the end, far away from the hydraulic oil cylinder, of the connecting rod 3 through a U-shaped clamping resistor 6, and a first press-fitting tool is installed on a cylinder cover of the hydraulic oil cylinder 1. During bushing press mounting, the connecting rod 3 passes through the pin shaft hole and then is provided with a second press sleeve tool, and the two bushings are positioned between the first press sleeve tool and the second press sleeve tool and are positioned at the axial outer sides of the two ends of the pin shaft hole. And a piston rod of the hydraulic oil cylinder retracts, the second sleeve pressing tool moves towards the first sleeve pressing tool, and the two bushes are extruded into two ends of the pin shaft hole.
When the existing bushing press-fitting tool is used, the piston rod 2 is easily collided and rubbed with the pin shaft hole and the second press-fitting tool after extending out, so that the surface of the piston rod is damaged, and the hydraulic oil cylinder cannot be well sealed and leaks oil.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bushing press-fitting tool which aims to solve the technical problem that a piston rod of an oil cylinder in the existing bushing press-fitting tool is easy to be damaged due to the fact that the piston rod is easy to be damaged due to abrasion.
The technical scheme for realizing the purpose of the utility model is as follows: the bushing press-fitting tool is constructed and comprises a hydraulic oil cylinder, a first press-fitting tool and a second press-fitting tool, and is characterized by further comprising a rod-shaped rod component, wherein a piston rod component of the hydraulic oil cylinder is provided with an axial central through hole; the rod component and the hydraulic oil cylinder are coaxially arranged, the first end of the rod component is fixedly connected with the cylinder head of the hydraulic oil cylinder, and the second end of the rod component extends out of the central through hole of the piston rod component; the second pressing sleeve tool is installed at the second end of the rod component, and the first pressing sleeve tool is installed at the outer end of a piston rod of the hydraulic oil cylinder. In the utility model, the first sleeve pressing tool is arranged at the end part of the piston rod, when the bushing is pressed, the outer surface of the piston rod is not contacted with the first sleeve pressing tool, and the piston rod is not deep into the pin shaft hole, so that the piston rod is not damaged by being damaged or rubbed and scratched when in use.
In the bushing press-fitting tool, the piston rod assembly comprises a piston rod and a piston main body which are of an integral structure, and a sealing element is arranged on the outer cylindrical surface of the piston main body, so that the piston main body and a cylinder barrel of the hydraulic oil cylinder are sealed. The piston rod and the piston main body are of an integrated structure, and a central through hole is conveniently machined in the piston rod.
In the bushing press-fitting tool, the rod component comprises a core shaft rod and a connecting rod which are coaxially arranged, a first end of the core shaft rod is fixedly connected with the cylinder head, a second end of the core shaft rod extends out of a central through hole of the piston rod component and is fixedly connected with a first end of the connecting rod, and the second press sleeve tool is installed at a second end of the connecting rod.
In the bushing press-fitting tool, the mandrel rod comprises a mandrel and a sleeve, a first end of the mandrel is fixedly connected with the cylinder head, a second end of the mandrel extends out of the central through hole of the piston rod assembly and is fixedly connected with a first end of the connecting rod, the sleeve is sleeved on the outer side of the mandrel, a first end of the sleeve is connected with the cylinder head of the hydraulic oil cylinder in a sealing and matching mode, and the hole wall of the central through hole of the piston rod assembly is in sealing and matching with the outer cylindrical surface of the sleeve. The mandrel can be made of common steel, the sleeve is made of corrosion-resistant materials, for example, the sleeve and the piston rod are made of the same materials, sealing requirements between the sleeve and the piston rod assembly are met, and meanwhile cost is reduced.
In the bushing press-fitting tool, the second end of the mandrel is provided with a limiting step which is in contact with the end face of the second end of the sleeve, the first end of the sleeve is propped against the cylinder head, and the second end of the sleeve is pressed and fixed by the limiting step at the second end of the mandrel.
In the bushing press-fitting tool, a fixed seat is fixedly mounted on the cylinder head, a threaded hole is formed in the fixed seat, a through hole for the first end of the mandrel to pass through is formed in the cylinder head, and an external thread in threaded fit connection with the threaded hole in the fixed seat is formed in the first end of the mandrel.
In the bushing press-fitting tool, the second end of the connecting rod is provided with a clamping groove, and a U-shaped clamp resistor for limiting the second press-fitting tool is installed in the clamping groove.
In the bushing press-fitting tool, the second end of the mandrel is provided with an external thread, and the first end of the connecting rod is provided with a threaded hole matched with the external thread of the second end of the mandrel.
In the bushing press-fitting tool, the fixed seat is fixedly connected with the cylinder head through a bolt.
Compared with the prior art, the hydraulic oil cylinder pressing tool has the advantages that the outer cylindrical surface of the piston rod is not contacted with the first pressing tool during pressing the bushing, the piston rod does not penetrate into the pin hole, and the outer cylindrical surface of the piston rod is not damaged by collision or friction scratch due to use.
Drawings
FIG. 1 is a schematic view showing the structure of a conventional bushing press-fitting tool
Fig. 2 is a schematic view of the construction of the bushing press-fitting tool of the present invention.
Fig. 3 is a schematic view of the piston rod of the bushing press-fitting tool of the present invention in an extended configuration.
Part names and serial numbers in the figure:
hydraulic cylinder 1, piston rod 2, connecting rod 3, first pressure cover frock 4, second pressure cover frock 5, U type card hinders 6, cylinder head 7, cylinder cap 8, piston main part 9, fixing base 10, dabber 11, sleeve pipe 12.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
As shown in fig. 2 and fig. 3, the bushing press-fitting tool in this embodiment includes a hydraulic cylinder 1, a first press-fitting tool 4, a second press-fitting tool 5, and a rod member, and a piston rod assembly of the hydraulic cylinder 1 is provided with an axial central through hole. The rod component is coaxially arranged with the hydraulic oil cylinder 1, the first end of the rod component is fixedly connected with the cylinder head of the hydraulic oil cylinder, and the second end of the rod component extends out of the central through hole of the piston rod component; the second pressing sleeve tool 5 is installed at the second end of the rod component, and the first pressing sleeve tool 4 is installed at the outer end of the piston rod 2 of the hydraulic oil cylinder.
The piston rod assembly comprises a piston rod 2 and a piston body 9 which are of an integral structure, and a sealing element is arranged on the outer cylindrical surface of the piston body 9, so that the piston body 9 and the cylinder barrel of the hydraulic oil cylinder 1 are sealed. The central through hole axially penetrates the piston body 9 and the piston rod 2. The piston rod 2 protrudes from a through hole in the cylinder head 8.
The rod component comprises a core shaft rod and a connecting rod 3 which are coaxially arranged, the core shaft rod comprises a core shaft 11 and a sleeve 12, a first end of the core shaft 11 is fixedly connected with the cylinder head 7, and a second end of the core shaft 11 extends out of a central through hole of the piston rod component and is fixedly connected with a first end of the connecting rod 3. The sleeve 12 is sleeved outside the mandrel 11, the first end of the sleeve is connected with the cylinder head of the hydraulic oil cylinder 1 in a sealing fit mode, and the hole wall of the central through hole of the piston rod assembly is in sealing fit with the outer cylindrical surface of the sleeve 12. The mandrel 11 can be made of common steel, and the sleeve 12 is made of corrosion-resistant and wear-resistant materials, such as the same materials as the piston rod, so that the sealing requirement between the sleeve and the piston rod assembly is met, and the cost is reduced. The second end of the mandrel is provided with a limiting step which is in contact with the end surface of the second end of the sleeve, the first end of the sleeve is propped against the cylinder head, and the second end of the sleeve is pressed and fixed by the limiting step of the second end of the mandrel.
The fixed mounting has fixing base 10 on the jar head 7, is provided with the screw hole on the fixing base 10, is provided with the through-hole that supplies the first end of dabber 11 to pass on the jar head 7, and 11 first ends of dabber are provided with the external screw thread of being connected with the screw hole screw-thread fit on the fixing base 10, fixing base 10 pass through the bolt with jar head fixed connection.
The second end of the mandrel 11 is provided with an external thread, and the first end of the connecting rod 3 is provided with a threaded hole matched with the external thread of the second end of the mandrel 11.
The second end of connecting rod 3 is provided with the draw-in groove, installs right in the draw-in groove the spacing U type card of second pressure cover frock 5 hinders 6.
The bushing press-fitting tool in the embodiment has the following steps of: take off U type card and hinder 6 and second and press cover frock 5, install first bush on first pressure cover frock 4, stretch into the round pin shaft hole with connecting rod 3, then install the second bush on connecting rod 3 in proper order, second pressure cover frock 5 and U type card hinder 6, aim at the both ends in round pin shaft hole with first bush and second bush, the control valve of control hydraulic cylinder 1 makes hydraulic cylinder's piston rod stretch out, first bush and second bush extrude into the round pin shaft hole under the promotion of two frock, in the installation of bush, the cylindrical surface of piston rod does not contact with pressing cover frock, also stretch into the round pin shaft hole, can not bump with the foreign object and scrape wearing and tearing, consequently, it is not fragile.
Claims (9)
1. A bushing press-fitting tool comprises a hydraulic oil cylinder, a first press-fitting tool and a second press-fitting tool, and is characterized by further comprising a rod-shaped rod component, wherein a piston rod component of the hydraulic oil cylinder is provided with an axial central through hole; the rod component and the hydraulic oil cylinder are coaxially arranged, the first end of the rod component is fixedly connected with the cylinder head of the hydraulic oil cylinder, and the second end of the rod component extends out of the central through hole of the piston rod component; the second pressing sleeve tool is installed at the second end of the rod component, and the first pressing sleeve tool is installed at the outer end of a piston rod of the hydraulic oil cylinder.
2. A bushing press-fitting tool according to claim 1, wherein said piston rod assembly includes a piston rod and a piston body of unitary construction.
3. The bushing press-fitting tool according to claim 1 or 2, wherein the rod member comprises a core shaft rod and a connecting rod, the core shaft rod and the connecting rod are coaxially arranged, a first end of the core shaft rod is fixedly connected with the cylinder head, a second end of the core shaft rod extends out of the central through hole of the piston rod assembly and is fixedly connected with a first end of the connecting rod, and the second press-fitting tool is mounted at a second end of the connecting rod.
4. A bushing press-fitting tool according to claim 3, wherein said mandrel rod comprises a mandrel and a sleeve, a first end of said mandrel is fixedly connected to the cylinder head, a second end of said mandrel extends out of the central through hole of said piston rod assembly and is fixedly connected to a first end of said connecting rod, said sleeve is sleeved outside said mandrel, a first end of said sleeve is connected to the cylinder head of the hydraulic cylinder in a sealing fit manner, and a hole wall of the central through hole of said piston rod assembly is in a sealing fit manner with an outer cylindrical surface of said sleeve.
5. A bushing press-fitting tool according to claim 4, wherein said second end of said core shaft has a stop step for contacting an end surface of said second end of said sleeve.
6. A bushing press-fitting tool according to claim 4, characterized in that a fixed seat is fixedly mounted on the cylinder head, a threaded hole is formed in the fixed seat, a through hole for the first end of the mandrel to pass through is formed in the cylinder head, and an external thread in threaded fit connection with the threaded hole in the fixed seat is formed at the first end of the mandrel.
7. The bushing press-fitting tool according to claim 3, wherein a clamping groove is formed at the second end of the connecting rod, and a U-shaped clamp for limiting the second press-fitting tool is installed in the clamping groove.
8. A bushing press-fitting tool according to claim 4 or 5, wherein said mandrel second end is provided with an external thread, and said connecting rod first end is provided with a threaded hole for mating with said mandrel second end external thread.
9. A bushing press-fitting tool according to claim 6, wherein said fixing seat is fixedly connected with said cylinder head by a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639085.6U CN216577654U (en) | 2021-11-01 | 2021-11-01 | Bush press-fitting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639085.6U CN216577654U (en) | 2021-11-01 | 2021-11-01 | Bush press-fitting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216577654U true CN216577654U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122639085.6U Active CN216577654U (en) | 2021-11-01 | 2021-11-01 | Bush press-fitting tool |
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| CN (1) | CN216577654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115383678A (en) * | 2022-11-01 | 2022-11-25 | 山东鲁宇重工机械制造有限公司 | Disassembling tool for assembling supporting seat of loader |
-
2021
- 2021-11-01 CN CN202122639085.6U patent/CN216577654U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115383678A (en) * | 2022-11-01 | 2022-11-25 | 山东鲁宇重工机械制造有限公司 | Disassembling tool for assembling supporting seat of loader |
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