CN211867660U

CN211867660U - Disassembling and assembling device for pin shaft of walking chain link of excavator

Info

Publication number: CN211867660U
Application number: CN201922445726.7U
Authority: CN
Inventors: 邢振寰; 秦健; 申航; 马鹏; 王鹏; 李树峰
Original assignee: Rizhao Port Co ltd
Current assignee: Rizhao Port Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-06
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a dismouting device of excavator walking chain link round pin axle, including hydro-cylinder and connecting rod, install the backup pad on the hydro-cylinder, connecting rod one end with the backup pad is connected, the other end of connecting rod is equipped with the detachable dog and restricts through stop device the dog with the opposite direction of backup pad removes. The inner side surfaces of the supporting plate and the stop block are contacted through the limiting device, so that the supporting plate or the stop block is prevented from having a movable gap between the limiting device and the fixing nut, and the situation that the threads at the two ends of the connecting rod are abraded due to the fact that the threads are prevented from being under the action of axial jacking pressure is avoided.

Description

Disassembling and assembling device for pin shaft of walking chain link of excavator

Technical Field

The utility model belongs to track round pin dismouting field, specifically speaking are dismouting device of excavator walking chain link round pin axle.

Background

Excavators are widely used in bulk cargo loading and unloading yards, and due to the uneven ground in which work is performed, a certain section of a traveling chain rail is often worn, so that the chain links need to be replaced. The chain track of the excavator is formed by clamping a plurality of chain links together through shaft pins, and the shaft pins need to be detached in the first step of replacing the chain links. At present, the pin shaft is disassembled and assembled through corresponding equipment.

Chinese patent CN206049844U discloses a crawler belt round pin replacer, including shape structure identical first bottom plate and second bottom plate, four angle departments symmetry of first bottom plate and second bottom plate are provided with the adjusting bolt hole, and first bottom plate and second bottom plate are connected fixedly through four adjusting bolt, be equipped with the jack mounting hole on the first bottom plate, jack ejector pin tip is equipped with the briquetting, and briquetting overall dimension is corresponding with by pressure equipment round pin overall dimension, is equipped with the adjusting hole on the second bottom plate, has placed the regulating plate that has the pinhole on the adjusting hole. When the device is used, the excavator track pin is disassembled and assembled through the pressure of the jack. The novel LED lamp is characterized by simple structure, convenient disassembly and assembly, convenient field operation and installation time and cost saving. However, there are the following problems:

there is no disclosure in the patent of whether the inner wall of the adjustment bolt hole is threaded, that is, it cannot be determined whether the adjustment bolt is in threaded relationship with the adjustment bolt hole. First, if the spiro union, adjusting bolt adjusts the position of bottom plate through the screw thread, because do not have further locating part on the adjusting bolt of the relative inboard of first bottom plate and second bottom plate, cause two bottom plates to produce the displacement change on adjusting bolt easily, just namely with produce the interval between the nut in the bottom plate outside, when receiving axial roof pressure effort, can cause the take off of silks to lose the effect of location. Secondly, if adjusting bolt freely passes in adjusting bolt hole, there is the clearance between adjusting bolt hole and the adjusting bolt promptly, during the equipment, the bottom plate blocks easily on adjusting bolt's screw thread, and adjusting bolt's axial lead can produce the contained angle with adjusting bolt hole's axial lead promptly, and does not contact with the nut in the outside completely, when receiving axial roof pressure effort, the bottom plate directly produces the impact to adjusting bolt's screw thread, finally leads to appearing taking off the silk condition.

SUMMERY OF THE UTILITY MODEL

For solving two bottom plates and because of relative inboard not having the locating part, cause the impact wear to the screw thread easily when receiving axial roof pressure effort, produce the problem that the screw thread takes off the silk, the utility model provides a dismouting device of excavator walking chain link round pin axle.

The utility model discloses a realize through following technical scheme.

The utility model provides a dismouting device of excavator walking chain link round pin axle, includes hydro-cylinder and connecting rod, install the backup pad on the hydro-cylinder, connecting rod one end with the backup pad is connected, the other end of connecting rod is equipped with the detachable dog and passes through stop device restriction the dog with the opposite direction of backup pad removes. The movement space of the supporting plate and the stop block is limited by the limiting device.

The utility model discloses a further improvement still, above-mentioned stop device is the boss, the boss contacts with the medial surface of backup pad and dog. The boss limits inward movement of the support plate and the stopper.

The utility model discloses a further improvement still, above-mentioned stop device is helicitic texture, helicitic texture set up in the both ends of connecting rod. The supporting plates and the stop blocks at the two ends of the connecting rod are limited to move inwards through the thread structures.

The utility model discloses a further improvement still, above-mentioned helicitic texture including with connecting rod both ends screw thread matched with spare nut. The position of the support plate and the stopper is defined by a spare nut screwed on the thread.

The utility model discloses a further improvement still, above-mentioned spare nut sets up in the inboard of backup pad and dog. The spare nut is screwed on the inner sides of the support plate and the stop block and limits inward movement of the support plate and the stop block.

The utility model discloses a further improvement still is equipped with the mounting hole in the above-mentioned backup pad, the connecting rod set up in the mounting hole. Is connected with the supporting plate and the stop block through the connecting rod.

The utility model discloses a further improvement still has, set up on the above-mentioned dog with the endocentric observation hole of hydro-cylinder. The observation hole is convenient for the disassembly ejection of the pin shaft and the observation of the installation position.

The utility model discloses a further improvement still, the top of above-mentioned backup pad is equipped with the lug. The lifting lugs are matched with the lifting equipment for use.

The utility model discloses a further improvement still, the front end of above-mentioned hydro-cylinder inner piston rod is equipped with the ejector pin. The ejector pin directly contacts with the pin shaft of the chain link.

The utility model discloses a further improvement still, is equipped with the smooth portion between the screw thread of above-mentioned connecting rod and the boss. The smooth part is matched with the inner wall of the mounting hole, so that the connecting rod is prevented from inclining.

The utility model has the advantages that: the inner side surfaces of the supporting plate and the stop block are contacted through the limiting device, so that the supporting plate or the stop block is prevented from having a movable gap between the limiting device and the fixing nut, and the situation that the threads at the two ends of the connecting rod are abraded due to the fact that the threads are prevented from being under the action of axial jacking pressure is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Fig. 3 is a schematic view of a stopper according to an embodiment of the present invention.

Fig. 4 is a schematic view of a support plate according to an embodiment of the present invention.

Fig. 5 is a schematic view of a connecting rod according to an embodiment of the present invention.

In the drawings: 1. hydro-cylinder, 2, backup pad, 3, connecting rod, 4, dog, 5, observation hole, 6, mounting hole, 7, ejector pin, 8, fixation nut, 9, thick tooth screw thread, 10, boss, 11, smooth portion, 12, spare nut.

Detailed Description

The following describes the embodiments of the present invention with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in the attached

drawings

2, 3 and 4, the dismounting device for the pin shaft of the walking chain link of the excavator comprises an oil cylinder 1, a piston rod which is controlled to stretch through hydraulic pressure is arranged in the oil cylinder 1, and a top rod 7 is arranged at the front end of the piston rod and directly contacts with the pin shaft on the chain link through the top rod 7. The front end of the cylinder body of the oil cylinder 1 is provided with a coarse thread 9, and the coarse thread 9 is screwed with an octagonal supporting plate 2. During the dismounting operation, the external thread of the coarse thread 9 can bear a larger interaction force, so that the thread falling-off condition is prevented. The top of the supporting plate 2 is provided with a lifting lug so as to be convenient for being matched with hoisting equipment. The front end of the supporting plate 2 is relatively provided with a rectangular stop block 4, and the octagonal supporting plate 2 and the rectangular stop block 4 are convenient to stably place during field assembly and disassembly or maintenance operation. The stopper 4 is provided with an observation hole 5 concentric with the oil cylinder 1, the observation hole 5 is convenient for the pin shaft to pass through during disassembly and is convenient for the pin shaft and the shaft hole to be observed and aligned during installation. The stop block 4 and the support plate 2 are relatively provided with mounting holes 6 with centrosymmetry, and the mounting holes 6 are internally provided with connecting rods 3. The both ends of connecting rod 3 are equipped with the screw thread, the spiro union has fixation nut 8 on the connecting rod 3 in backup pad 2 and the baffle outside, prescribes a limit to the position in backup pad 2 and the dog 4 outside through fixation nut 8, be equipped with on the connecting rod 3 with the stop device that backup pad 2 and baffle medial surface contacted, stop device be for set up in the boss 10 at connecting rod 3 middle part, the terminal surface of boss 10 respectively with the medial surface of backup pad 2 and dog 4 contacts. And a smooth part 11 is arranged on the connecting rod 3 between the boss 10 and the thread, and the length and the outer diameter of the smooth part 11 are respectively matched with the length and the inner diameter of the mounting hole 6. The smooth portion 11 is fitted to the inner wall of the mounting hole 6 to prevent the connecting rod 3 from being inclined. After the fixing nut 8 and the boss 10 clamp the support plate 2 or the stop block 4, the phenomenon that an included angle is formed between the axial lead of the connecting rod 3 and the axial lead of the mounting hole 6 and clamped on a certain section of thread of the connecting rod 3, and the thread is impacted to cause damage after the axial jacking acting force of the oil cylinder 1 is applied can be avoided.

Example two:

as shown in the attached drawing 5, the dismounting device for the walking chain link pin shaft of the excavator is otherwise unchanged, the limiting device is of a threaded structure, the threaded structure comprises spare nuts 12 matched with threads at two ends of the connecting rod 3, and the spare nuts 12 are respectively arranged on the connecting rod 3 on the inner sides of the supporting plate 2 and the stop block 4. The clamping fixation of the support plate 2 or the stop 4 is achieved by means of a fixing nut 8 and a spare nut 12. Simultaneously, the crawler belt is suitable for dismounting the pin shafts with different crawler belt widths.

Instructions for use: when the pin shaft is disassembled, after the front end of the oil cylinder is in threaded contact with the supporting plate, the oil cylinder is suspended to a proper position outside the crawler belt through the hoisting equipment, the connecting rod penetrates through the oil cylinder, the stop block is placed on the inner side of the crawler belt to be fixed, the ejector rod is aligned to the position of the pin shaft, the oil cylinder is operated to eject the pin shaft out, and after the pin shaft is in contact with the pin shaft, the stop block is clamped on the inner side of the crawler belt to form a support due. When the pin shaft is installed, the pin shaft is clamped into the shaft hole, the observation hole is used for observing and aligning the position, and the oil cylinder pushes the ejector rod to install the pin shaft into the shaft hole.

A dismouting device of excavator walking chain link round pin axle, contact through the medial surface of stop device to backup pad and dog, prevent that backup pad or dog from having portable clearance between stop device and fixation nut to avoid causing wearing and tearing to the screw thread at connecting rod both ends receiving axial roof pressure effort under.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a dismouting device of excavator walking chain link round pin axle which characterized in that, includes hydro-cylinder (1) and connecting rod (3), install backup pad (2) on hydro-cylinder (1), connecting rod (3) one end with backup pad (2) are connected, the other end of connecting rod (3) is equipped with detachable dog (4) and through stop device restriction dog (4) with the opposite direction of backup pad (2) removes.

2. The dismounting device for the walking link pin shaft of the excavator as claimed in claim 1, wherein the limiting device is a boss (10), and the boss (10) is in contact with the inner side surfaces of the support plate (2) and the stop block (4).

3. The dismounting device for the walking chain link pin shaft of the excavator as claimed in claim 1, wherein the limiting device is a threaded structure, and the threaded structure is arranged at two ends of the connecting rod (3).

4. The device for dismounting a pin of a walking link of an excavator according to claim 3, wherein the threaded structure comprises spare nuts (12) which are in threaded fit with two ends of the connecting rod (3).

5. The device for dismounting a pin of a walking link of an excavator according to claim 4, wherein the spare nut (12) is arranged at the inner side of the support plate (2) and the stop block (4).

6. The device for dismounting a pin of a walking link of an excavator according to any one of claims 1 to 5, wherein a mounting hole (6) is formed in the supporting plate (2), and the connecting rod (3) is arranged in the mounting hole (6).

7. The dismounting device for the walking chain link pin shaft of the excavator as claimed in any one of claims 1 to 5, wherein the stopper (4) is provided with an observation hole (5) concentric with the oil cylinder (1).

8. The device for dismounting a pin of a walking link of an excavator as claimed in any one of claims 1 to 5, wherein a lifting lug is arranged at the top of the supporting plate (2).

9. The dismounting device for the walking chain link pin shaft of the excavator as claimed in any one of claims 1-5, wherein a top rod (7) is arranged at the front end of a piston rod in the oil cylinder (1).

10. The device for dismounting a pin of a walking link of an excavator according to claim 2, wherein a smooth part (11) is arranged between the thread of the connecting rod (3) and the boss (10).