CN210025146U

CN210025146U - Pin shaft dismounting tool and pin sleeve dismounting tool

Info

Publication number: CN210025146U
Application number: CN201920833858.4U
Authority: CN
Inventors: 吴险峰
Original assignee: Beijing Zhihong Kexin Technology Development Co Ltd
Current assignee: Beijing Zhihong Kexin Technology Development Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-02-07
Anticipated expiration: 2029-06-04

Abstract

The utility model relates to a round pin axle assembly and disassembly tools and pin bushing assembly and disassembly tools belongs to mounting tool technical field, and it is little to solve current instrument application scope, and the function is single, can only the dismouting correspond the round pin axle of model and the problem of axle sleeve. The utility model discloses a round pin axle and/or pin bushing assembly and disassembly tools includes: connecting rod, pneumatic cylinder, round pin axle connecting piece, aperture are adjusted U-shaped dog, are pressed and are pulled dog and pin bushing connecting piece. The utility model discloses not only can carry out the dismantlement and the installation of the round pin axle of various installation forms, pin bush, can also satisfy the dismantlement and the installation needs of not unidimensional round pin axle pin bush, the utility model discloses be equipped with the bolt adjustment sleeve of multiple not unidimensional, draw round pin screw rod, pin bush pressure disk, lead screw ejector pin, connecting rod, welding sleeve, aperture regulation U type dog to satisfy round pin axle and pin bush dismantlement and installation needs in the certain size within range. The utility model discloses still have light in weight, the size is little, and it is nimble convenient to use, and the range of application is wide, and is efficient, economizes the laborsaving characteristics of people.

Description

Pin shaft dismounting tool and pin sleeve dismounting tool

Technical Field

The utility model relates to a mounting tool technical field especially relates to a round pin axle assembly and disassembly tools and pin bushing assembly and disassembly tools.

Background

At present, the equipment quantity of various engineering vehicles, transport vehicles, agricultural machinery and mining machinery in the world is huge, the quantity of pin shafts and pin sleeves used on the vehicles and the equipment is large, the installation forms, the spatial positions and the structural forms are various, the pin shafts and the pin sleeves are worn and need to be replaced in the use process, but the disassembly is very labor-consuming, time-consuming and unsafe due to corrosion and abrasion, even the pin shafts and the pin sleeves cannot be disassembled, only destructive disassembly is realized, not only is unnecessary waste caused, but also the maintenance time is prolonged, the loss caused by the shutdown of the equipment cannot be estimated, and the estimation is carried out by thousands of billions.

At present, special tools for maintaining various devices and disassembling pin shafts are researched and manufactured by some manufacturers aiming at the pin shafts of specific devices, but the special tools have certain limitations due to strong pertinence and high manufacturing cost, and for maintenance enterprises and individuals, the range of the devices to be repaired is large, the types and the models are complicated, if the special tools for maintaining each type of vehicles and devices are prepared, great investment is needed, the special tools for maintaining large enterprises are difficult to realize, and the special tools are difficult to bear for small enterprises and individuals. Therefore, the device can only be disassembled and maintained by adopting simple tools such as a sledge hammer, a jack, a crowbar and the like, has low efficiency because no special tool is used, has long maintenance time because one pin shaft is disassembled for a plurality of hours and cannot earn money, also influences the normal running or operation of the device, and leads users to be very urgent and causes certain economic loss for both parties. Such a phenomenon is abundant in equipment users, repair shops, and repair departments in various locations throughout the country or the world. The production and maintenance efficiency is seriously restricted, and a special tool which has strong universality and can disassemble pin shafts and pin sleeves in various different installation forms is urgently needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing analysis, the present invention aims to provide a pin shaft dismounting tool and a pin sleeve dismounting tool for solving the problem that the existing tool can only dismount the pin shaft and the shaft sleeve corresponding to the model.

The purpose of the utility model is mainly realized through the following technical scheme:

the utility model provides an among the technical scheme, a round pin axle assembly and disassembly tools, round pin axle assembly and disassembly tools includes: the connecting rod, the hydraulic cylinder, the pin shaft connecting piece and the pressing and pulling stop block are arranged on the connecting rod;

the connecting rods are rods with rectangular cross sections, and a plurality of rod positioning holes which completely penetrate through the two sides are formed in one group of side surfaces;

the press-pull stop block is provided with a rectangular hole matched with the connecting rod and a block positioning hole, and the quick positioning hole is matched with any rod positioning hole through a connecting rod bolt;

pneumatic cylinder detachably installs on the connecting rod, and round pin axle connecting piece and the piston rod fixed connection of pneumatic cylinder, the flexible direction of piston rod is unanimous with the connecting rod extending direction.

In the technical scheme of the utility model, the press-pull stop block is provided with a U-shaped limit fork along the extension direction of the connecting rod;

the pressing and pulling stop block is a non-welding stop block with no welding surface of the U-shaped limiting fork or a welding stop block with a welding surface of the U-shaped limiting fork.

The utility model discloses among the technical scheme, round pin axle assembly and disassembly tools still includes the aperture and adjusts the U-shaped dog, and the lateral surface size that the U-shaped dog was adjusted in the aperture equals with the medial surface size of the spacing fork of U-shaped, and the inboard cambered surface size of the U-shaped dog is adjusted in the aperture is greater than the lateral surface of target round pin axle.

The utility model discloses among the technical scheme, the round pin shaft connecting piece includes: the device comprises a screw rod ejector rod, a pull pin screw rod, a screw rod adjusting sleeve, a pull rod adjusting sleeve, a fastening nut and a welding sleeve;

one end of the screw rod ejector rod is fixedly connected with a piston rod of the hydraulic cylinder, and the other end of the screw rod ejector rod is connected with the pin shaft; three connection modes can be realized with round pin axle to the lead screw ejector pin:

the screw rod ejector rod is connected with the pull pin screw rod through a screw rod adjusting sleeve, the pull pin screw rod is sleeved with a pull rod adjusting sleeve, the pull rod adjusting sleeve is matched with a hexagonal structure of a fastening nut, the fastening nut is in threaded fit with the screw rod ejector rod, and the pull pin screw rod is in threaded fit with the pin shaft;

the screw rod ejector rod is in threaded connection with the welding sleeve, and the welding sleeve is welded with the pin shaft;

the screw rod ejector rod is directly connected with the pin shaft.

The utility model discloses among the technical scheme, the pneumatic cylinder that institute is the dual-purpose jar, is equipped with two oil pipe joints, is connected with the hydraulic pressure source respectively.

The utility model provides an among the technical scheme, a pin bush assembly and disassembly tools, pin bush assembly and disassembly tools includes: the connecting rod, the hydraulic cylinder fixing seat, the pin bush connecting piece and the pressing and pulling stop block are arranged on the connecting rod;

the hydraulic cylinder fixing seat and the press-pull stop block are both provided with rectangular holes matched with the connecting rods and are provided with block positioning holes, and the quick positioning holes are matched with any rod positioning hole through connecting rod bolts;

the pneumatic cylinder is fixed on the pneumatic cylinder fixing base, and the piston rod fixed connection of pin bushing connecting piece and pneumatic cylinder, the flexible direction of piston rod is unanimous with the connecting rod extending direction.

The utility model discloses among the technical scheme, the round pin cover connecting piece includes: a screw rod ejector rod and a pin bushing pressure plate;

one end of the screw rod ejector rod is fixedly connected with a piston rod of the hydraulic cylinder, the other end of the screw rod ejector rod is fixedly connected with the pin bush pressure plate, and the pin bush pressure plate is directly connected with the pin bush.

The utility model discloses among the technical scheme, the cotter assembly and disassembly tools still includes that the U-shaped dog is adjusted in the aperture, and the lateral surface size that the U-shaped dog was adjusted in the aperture equals with the medial surface size of the spacing fork of U-shaped, and the inboard cambered surface size of the U-shaped dog is adjusted in the aperture is greater than the lateral surface of target cotter.

The utility model discloses technical scheme can realize one of following effect at least:

1. use the utility model discloses not only can carry out the dismantlement and the installation of the round pin axle of various installation forms, pin bush, in order to satisfy not unidimensional round pin axle pin bush's dismantlement and installation needs, the utility model discloses a multiple not unidimensional round pin axle bolt adjusting collar, round pin axle screw rod, pin bush pressure disk, lead screw ejector pin, connecting rod, welding sleeve, aperture regulation U type dog have still been equipped with to satisfy round pin axle and pin bush dismantlement and installation needs in the certain size within range.

2. The utility model can be packed into a tool box, and if the tool box is put into a draw-bar box, one person can easily draw the tool box. In addition, the small-sized hydraulic pump station adopts an ultrahigh pressure hydraulic pump, can greatly reduce the size and the weight, can be arranged in a small box or on a trolley, is very convenient to push away, has strong functions and low cost, is very suitable for field maintenance of repair workshops and maintenance crews, and has wide application prospect.

The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.

FIG. 1 is a schematic structural view of a first usage of the present invention;

FIG. 2 is a schematic structural view of a second mode of use of the present invention;

FIG. 3 is a schematic structural view of a third mode of use of the present invention;

FIG. 4 is a schematic structural view of a fourth mode of use of the present invention;

FIG. 5 is a schematic structural view of a fifth mode of use of the present invention;

FIG. 6 is a schematic structural view of a sixth mode of use of the present invention;

FIG. 7 is an exploded view of the components of the present invention;

FIG. 8 is a schematic view of the present invention illustrating part packing;

fig. 9 is a schematic view of the storage trolley case of the present invention.

Reference numerals:

the device comprises a connecting rod 1, a hydraulic cylinder 2, a hydraulic cylinder 3, a hydraulic cylinder fixing seat 4, a hole diameter adjusting U-shaped stop block, a non-welding stop block 5, a welding stop block 6, a lead screw ejector rod 7, a pull pin screw rod 8, a pull rod adjusting sleeve 9, a fastening nut 10, a welding sleeve 11 and a pin sleeve pressing plate 12.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.

As shown in fig. 1 and 7, the embodiment of the present invention provides a combined special tool, which can solve the problem of disassembling and assembling various types, structures and sizes of pin shafts or shaft sleeves in the maintenance process by combining different components. The tool set also has the characteristics of light weight, small size, flexible and convenient use, wide application range, high efficiency and labor saving. The embodiment of the utility model provides a part spare part can be alone or the replacement to the adaptation corresponds work object.

Specifically, the embodiment of the utility model provides an in round pin axle assembly and disassembly tools and pin bushing assembly and disassembly tools include: connecting rod 1, pneumatic cylinder 2, fixing base, round pin shaft connecting piece, aperture regulation U-shaped dog 4, pressure and pull dog and pin bushing connecting piece.

Connecting rod 1 is the pole that the cross section is the rectangle, and the cross section also can be other polygons, considers the difficult and easy degree of processing, convenient storage to and set up the reason of pole locating hole, and the cross section of connecting rod 1 is preferably the rectangle, and wherein is equipped with a plurality of pole locating holes that run through the two sides completely on a set of side.

Pneumatic cylinder fixing base 3 and pressure are pulled out the dog and all are equipped with connecting rod 1 complex rectangular hole, and are equipped with a locating hole, and quick locating hole and any pole locating hole pass through the cooperation of connecting rod bolt, and the pole locating hole of connecting rod 1 that corresponds when through the adjustment cooperation adjusts the position of pneumatic cylinder fixing base 3 and pressure and pulls out the dog.

Pneumatic cylinder 2 is fixed on pneumatic cylinder fixing base 3, and the piston rod fixed connection of round pin shaft connecting piece and pneumatic cylinder 2, the flexible direction of piston rod is unanimous with 1 extending direction of connecting rod, the embodiment of the utility model provides a process of pushing away or drawing is realized to the piston rod through pneumatic cylinder 2 to realize the dismouting of round pin axle or pin bushing.

The pressing and pulling stop block is provided with a U-shaped limiting fork along the extension direction of the connecting rod 1; the pressure pull stop is that non-welding stop 5 or the U-shaped spacing fork that the U-shaped spacing fork does not have the face of weld is equipped with the welding stop 6 of the face of weld, and it is generally cylindrical when considering round pin axle and guide, consequently adopt the spacing fork of U-shaped can be under the prerequisite of guaranteeing easy dismounting, let the pressure pull stop as far as possible exert the effort on every side of the installation object of round pin axle or guide on average, prevent round pin axle or guide from damaging. During the in-service use, the stopper is pulled out to the pressure and is divided into the non-welding dog 5 that the spacing fork of U-shaped does not have the face of weld and the welding dog 6 that the spacing fork of U-shaped was equipped with the face of weld according to whether having the fixed position of pulling out the stopper, and the difference of two kinds only is for enough being equipped with the face of weld.

In case round pin axle or guide pin is thin, it is obvious to differ with the inboard cambered surface size of the spacing fork of U-shaped, causes the damage to the installation object very easily when dismouting round pin axle or guide pin then, consequently the embodiment of the utility model provides an, the lateral surface size of U-shaped dog 4 is adjusted in the aperture equals with the medial surface size of the spacing fork of U-shaped, and the inboard cambered surface size of U-shaped dog is adjusted in the footpath slightly is greater than the lateral surface of target round pin axle, and preferred maximum dimension difference is 1cm and 0.2 times the great one in the two of round pin axle size. The U-shaped dog 4 is adjusted in aperture is equipped with a plurality ofly of different medial surface sizes, and direct as required change can.

Consider in the embodiment of the utility model, need to realize pushing away and drawing two kinds of dismouting modes, hydraulic cylinder is double-acting cylinder, is equipped with two individual oil pipe joints on, is connected with the hydraulic pressure source respectively, has all arranged a plurality of screw hole on hydraulic cylinder's upper end cover and the lower base terminal surface, fixes hydraulic cylinder on the hydro-cylinder fixing base through the bolt.

Specifically, the round pin shaft connecting piece includes: the device comprises a lead screw ejector rod 7, a pull pin screw 8, a screw adjusting sleeve, a pull rod adjusting sleeve 9, a fastening nut 10 and a welding sleeve 11; one end of the screw rod ejector rod 7 is fixedly connected with a piston rod of the hydraulic cylinder 2, and the other end of the screw rod ejector rod is connected with the pin shaft; three connection modes can be realized with round pin axle to lead screw ejector pin 7:

(1) the screw rod ejector rod 7 is connected with a pull pin screw rod 8 through a screw rod adjusting sleeve, the pull pin screw rod 8 is sleeved with a pull rod adjusting sleeve 9, the pull rod adjusting sleeve 9 is matched with a hexagonal structure of a fastening nut 10, the fastening nut 10 is in threaded fit with the screw rod ejector rod 7, and the pull pin screw rod 8 is in threaded fit with a pin shaft;

(2) the lead screw ejector rod 7 is in threaded connection with the welding sleeve 11, and the welding sleeve 11 is welded with the pin shaft;

(3) and the lead screw ejector rod 7 is directly connected with the pin shaft.

The pin bush connector includes: a screw rod ejector rod 7 and a pin bush pressure plate 12; one end of the screw rod ejector rod 7 is fixedly connected with a piston rod of the hydraulic cylinder 2, the other end of the screw rod ejector rod is fixedly connected with the pin bush pressure plate 12, and the pin bush pressure plate 12 is directly connected with the pin bush.

The multi-functional use of the embodiments of the invention is illustrated by the following specific examples.

Using method 1

As shown in fig. 1, the embodiment of the present invention is used to pull and detach a pin shaft with threads.

And selecting a proper pull pin screw 8 and a proper screw adjusting sleeve according to the size of the pin shaft and the overall dimension of the part for mounting the pin shaft. The pull rod adjusting sleeve 9 is in clearance fit with the pull pin screw 8, the pull rod adjusting sleeve 9 is in a shape of a cylinder with a round hole in the middle and a large diameter at one end and a small diameter at the other end, the pull rod adjusting sleeve 9 is sleeved on the pull pin screw 8, then a fastening nut 10 is sleeved on the pull pin screw 8, and the pull pin screw 8 is screwed into a threaded hole of a pin shaft to be disassembled until the pull pin screw 8 is tightly pressed; and then aligning a screw rod mandril 7 arranged in a piston rod of the hydraulic oil cylinder with a fastening nut 10, and rotating the fastening nut 10 to screw the fastening nut, so that the disassembled pin shaft, the pull pin screw 8, the screw rod adjusting sleeve and the fastening nut 10 are connected into a whole. Two high-pressure oil pipes of a hydraulic pump station are respectively arranged on oil pipe joints of a hydraulic oil cylinder, the hydraulic oil pump is started, a handle is operated, a piston rod of the hydraulic oil cylinder is retracted into the oil cylinder, a disassembled pin shaft is pulled out from parts arranged on the piston rod along with the movement of the piston rod, and the work of disassembling the pin shaft is completed. If the overall dimension of the part of the mounting pin shaft is smaller than the dimension of a U-shaped opening of a non-welded press-pull stop block, the U-shaped stop block is required to be mounted in an aperture adjusting mode, the aperture adjusting U-shaped stop block is U-shaped and provided with steps, the small U-shaped outer dimension is in clearance fit with the U-shaped inner dimension of the movable adjusting stop block, the large U-shaped outer dimension is larger than the U-shaped inner dimension of the movable adjusting stop block, the U-shaped stop block is mounted between the dismounted pin shaft and the movable adjusting stop block, the large U-shaped direction faces to the side of the dismounted pin shaft, the U-shaped stop block is tightly attached to the part of the dismounted pin shaft, the supporting function is achieved.

Using mode two

As shown in fig. 2, the embodiment of the present invention is used to press-fit a certain pin shaft with threads.

Similar to the first use mode, the screw rod ejector rod 7 is directly fixed on the end face of the pin shaft to be installed, the mounting hole is aligned, the hydraulic pump is started, the handle is operated, the piston rod of the hydraulic oil cylinder extends out of the oil cylinder until the pin shaft is completely pressed into the mounting hole.

Mode of use three

As shown in FIG. 3, the embodiment of the present invention is used to pull and detach a pin shaft with threads, which has a larger size and does not have a fixed position, of a certain installation workpiece. Some workpieces have larger sizes, and the workpieces cannot be clamped at two ends to be pressed in or pulled in, pulled out or pressed out.

The two ends of the welding sleeve 11 are cylindrical, two square grooves are symmetrically formed in the middle of the welding sleeve, so that the welding sleeve can be conveniently tightened and loosened by a wrench, an internal thread is machined at one end of the welding sleeve, the size of the internal thread is the same as that of the screw thread of the screw rod ejector rod 7, the screw thread of the welding sleeve 11 is screwed into the screw rod ejector rod 7 and is stopped after being screwed, the plane of the non-welding press-pull stop block is tightly attached to a part provided with a disassembled pin shaft, a hydraulic pump is started, a piston rod of a hydraulic oil cylinder extends out, the welding sleeve 11 is tightly attached to the end face of the disassembled pin shaft and then stops, the welding sleeve 11 and the disassembled pin shaft are welded firmly by an electric welding machine and a welding rod, after a welding part is cooled, the hydraulic pump is started again, the extended.

Using mode four

As shown in fig. 4, the embodiment of the present invention is used to press-fit a pin shaft with threads, which has a larger size and does not have a fixed position, of a certain installation workpiece. Some workpieces have larger sizes, and the workpieces cannot be clamped at two ends to be pressed in or pulled in, pulled out or pressed out.

Similar to the third use mode, the plane of the welding drawing stop block is attached to a part provided with a disassembled pin shaft and is firmly welded together, the pin shaft to be pressed is aligned with the mounting hole, the hydraulic pump is started, the piston rod of the hydraulic oil cylinder extends out, the pin shaft is pressed into the mounting hole of the part, and the pressing work of the pin shaft is completed.

Mode of use five

As shown in fig. 5, the embodiment of the present invention is used to pull a pin bush.

Selecting a proper pin bush pressure plate 12 according to the size of the inner diameter of the pin bush, wherein the pin bush pressure plate 12 is a disc with a certain thickness, the outer diameter of the disc is large at one end and small at the other end, an inner hole is a threaded hole, and the diameter of the inner hole is the same as that of the screw rod ejector rod 7; the piston rod of the hydraulic oil cylinder extends out for a certain distance, if the distance is not enough, the screw rod ejector rod 7 is screwed out for a certain distance until the pin bush pressing plate 12 can be screwed in and installed on the screw rod ejector rod 7, then the pin bush pressing plate 12 is pressed on a pin bush to be installed, the pin bush pressing plate is aligned with the installation hole of a part, the internal thread of the pin bush pressing plate 12 is screwed in the external thread of the screw rod ejector rod 7, and the end face is aligned. And starting the hydraulic oil pump, operating the handle to enable a piston rod of the hydraulic oil cylinder to retract into the oil cylinder, pressing the pin bush into the part, and stopping after reaching the installation position to finish the operation of pulling the pin bush into the part.

Usage mode six

As shown in fig. 6, the embodiment of the present invention is used to press-fit a pin bush.

And selecting a proper pin bush pressure plate 12 according to the inner diameter of the pin bush, aligning the pin bush pressure plate 12 to the pin bush to be pressed in, starting a hydraulic oil pump after aligning the mounting hole, operating a handle, extending a piston rod of the hydraulic oil pump out to press the pin bush into the part, stopping the operation after the piston rod reaches a mounting position, and finishing the operation of pressing the pin bush into the part.

As shown in fig. 7, the utility model discloses the using-way is not restricted to with above-mentioned six using-ways, can carry out appropriate adjustment according to round pin axle, the round pin bush installation of difference and dismantlement requirement, changes out more compound mode to satisfy the dismantlement and the installation needs of various round pin axles and round pin bushes. In addition, screw rod adjusting sleeve, draw round pin screw rod 8, round pin cover pressure disk 12, lead screw ejector pin 7, connecting rod 1, welding sleeve 11, aperture adjustment U type dog all are equipped with the multiunit of different sizes, can select the corresponding part of suitable size according to actual need.

As shown in fig. 8 and 9, the embodiment of the present invention is further provided with a storage draw-bar box, which can be disassembled and stored in the storage draw-bar box, so that one person can easily pull away the storage draw-bar box. In addition, the small-sized hydraulic pump station adopts an ultrahigh pressure hydraulic pump, can greatly reduce the size and the weight, can be arranged in a small box or on a trolley, is very convenient to push away, has strong functions and low cost, is very suitable for field maintenance of repair workshops and maintenance crews, and has wide application prospect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. The utility model provides a round pin axle assembly and disassembly tools, its characterized in that, round pin axle assembly and disassembly tools includes: the connecting rod (1), the hydraulic cylinder (2), the pin shaft connecting piece and the pressing and pulling stop block;

the cross section of the connecting rod (1) is rectangular, and a plurality of rod positioning holes penetrating through the connecting rod (1) are formed in the side face of the connecting rod;

the press-pull stop block is provided with a block positioning hole and a rectangular hole matched with the connecting rod (1), and the block positioning hole is matched with any rod positioning hole through a connecting rod bolt;

the hydraulic cylinder (2) is detachably mounted on the connecting rod (1), the pin shaft connecting piece is fixedly connected with a piston rod of the hydraulic cylinder (2), and the telescopic direction of the piston rod is consistent with the extending direction of the connecting rod (1).

2. The pin dismounting tool according to claim 1, wherein the press-pull block is provided with a U-shaped limit fork along the extending direction of the connecting rod (1);

the pressing and drawing stop block is a non-welding stop block (5) with a U-shaped limiting fork without a welding surface or a welding stop block (6) with a welding surface arranged on the U-shaped limiting fork.

3. The pin shaft dismounting tool according to claim 2, further comprising an aperture adjusting U-shaped stopper (4), wherein the size of the outer side surface of the aperture adjusting U-shaped stopper (4) is equal to the size of the inner side surface of the U-shaped limiting fork, and the size of the inner arc surface of the aperture adjusting U-shaped stopper is larger than the size of the outer side surface of the target pin shaft.

4. A pin dismounting tool according to any one of claims 1 to 3, wherein said pin connection member comprises: the screw rod ejector rod (7), the pull pin screw rod (8), the screw rod adjusting sleeve, the pull rod adjusting sleeve (9), the fastening nut (10) and the welding sleeve (11);

one end of the lead screw ejector rod (7) is fixedly connected with a piston rod of the hydraulic cylinder (2), and the other end of the lead screw ejector rod is connected with a pin shaft;

three connection modes can be realized with round pin axle in lead screw ejector pin (7): the screw rod ejector rod (7) is connected with a pull pin screw rod (8) through a screw rod adjusting sleeve, the pull pin screw rod (8) is sleeved with a pull rod adjusting sleeve (9), the pull rod adjusting sleeve (9) is matched with the hexagonal structure of the fastening nut (10), the fastening nut (10) is in threaded fit with the screw rod ejector rod (7), and the pull pin screw rod (8) is in threaded fit with a pin shaft; or the screw rod ejector rod (7) is in threaded connection with the welding sleeve (11), and the welding sleeve (11) is welded with the pin shaft; or the lead screw ejector rod (7) is in contact connection with the pin shaft.

5. The pin dismounting tool according to claim 1, characterized in that the hydraulic cylinder (2) is a double-acting cylinder provided with two oil line connections, each connected to a hydraulic source.

6. A pin bush attaching and detaching tool, characterized by comprising: the device comprises a connecting rod (1), a hydraulic cylinder (2), a pin bush connecting piece and a pressing and pulling stop block;

the connecting rod (1) is a rod with a rectangular cross section, and a plurality of rod positioning holes which completely penetrate through the connecting rod (1) are formed in the side face of the connecting rod (1);

the press-pull stop block is provided with a block positioning hole and a rectangular hole matched with the connecting rod (1), and the block positioning hole is matched with any rod positioning hole through a connecting rod bolt; pneumatic cylinder (2) detachably install on connecting rod (1), the cotter connecting piece with the piston rod fixed connection of pneumatic cylinder (2), the flexible direction of piston rod with connecting rod (1) extending direction is unanimous.

7. The pin bushing dismounting tool according to claim 6, wherein said press-pull block is provided with a U-shaped limit fork along the extension direction of said connecting rod (1);

8. The pin sleeve disassembly tool of claim 7, wherein the pin sleeve connector comprises: a screw rod ejector rod (7) and a pin bushing pressure plate (12);

one end of the screw rod ejector rod (7) is fixedly connected with a piston rod of the hydraulic cylinder (2), the other end of the screw rod ejector rod is fixedly connected with the pin bush pressure plate (12), and the pin bush pressure plate (12) is directly connected with the pin bush.

9. The pin bush dismounting tool according to any one of claims 6 to 8, further comprising an aperture-adjusting U-shaped stopper (4), wherein the size of the outer side surface of the aperture-adjusting U-shaped stopper (4) is equal to the size of the inner side surface of the U-shaped spacing fork, and the size of the inner arc surface of the aperture-adjusting U-shaped stopper is larger than the outer side surface of the target pin bush.

10. The pin bushing handling tool according to claim 6, wherein the hydraulic cylinder (2) is a double acting cylinder provided with two oil line connections, both connected to a hydraulic source.