Double-hole dumbbell pin and double-end spring pin

Abstract

The utility model provides a double-hole type dumbbell pin and further provides a double-end spring pin, the double-hole type dumbbell pin comprises a dumbbell pin body, pin shafts at the two ends of the dumbbell pin body are respectively provided with two pin holes for the spring pin to be inserted, and the two pin holes are formed in the axial direction of the pin shafts at intervals and are perpendicular to the pin shafts. The double-end spring pin is installed in the pin hole of the double-hole dumbbell pin, double locking is conducted on the clamping block arranged on the pin shaft in a sleeving mode through the double-end spring pin, in the using process, after one pin column of the double-end spring pin is broken, the other pin column of the double-end spring pin can still have the locking effect on the clamping block arranged on the pin shaft in the sleeving mode, and therefore the service life of the dumbbell pin is prolonged. The middle grooves can still be effectively connected, the falling risk of the dumbbell pin is reduced, and then normal operation of the scraper conveyor is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to dumbbell pin technical field, concretely relates to a double-hole type dumbbell pin and double -end spring pin. BACKGROUND

[0002] Dumbbell pin is the important part of the connection between the middle trough and the middle trough in the scraper conveyor, usually a group of dumbbell pins is combined by a dumbbell pin, two clamping blocks and two spring pins, the function of the dumbbell pin is to ensure the stable connection of the middle trough of the scraper, prevent the transverse and longitudinal displacement of the middle trough, and ensure the normal operation of the scraper to convey coal.

[0003] The dumbbell pin is a forge piece, which is composed of a middle pin part, two dumbbell heads at both ends and two end pin shafts, the existing dumbbell pin is usually provided with a through pin hole at each end pin shaft, which is used for the installation of the spring pin, and the clamping block and the dumbbell pin are fixed in the middle trough pin hole through the spring pin. Due to the complex underground working conditions, the middle troughs of the scraper will form an impact force of transverse or longitudinal displacement during the pushing and pulling operation, which will impact the spring pin installed on the dumbbell pin, and the spring pin will be broken after a long time of impact, once the spring pin is broken, the dumbbell pin will lose the transverse positioning, which will cause the dumbbell pin to be removed from the middle trough, and then cause the connection failure between the middle troughs, and affect the normal work of the whole scraper. SUMMARY

[0004] Therefore, it is necessary to provide a double-hole type dumbbell pin which can simultaneously insert two spring pins on the pin shaft, so as to solve the technical problem that the dumbbell pin is easy to be removed.

[0005] It is also necessary to provide a double-head spring pin which is used in cooperation with the double-hole type dumbbell pin.

[0006] The utility model solves the technical problems by adopting the following technical scheme:

[0007] A double-hole type dumbbell pin, which comprises a dumbbell pin body, two pin holes for inserting spring pins are respectively formed on the end pin shafts of the dumbbell pin body, the two pin holes are spaced apart along the axial direction of the pin shaft and are perpendicular to the pin shaft.

[0008] A double-head spring pin is used for inserting into the pin hole of the double-hole type dumbbell pin, which comprises a base, a pin column and an O-shaped clamping spring, the pin column is two, and is vertically spaced apart and fixedly arranged at the bottom of the base, the two pin columns are parallel to each other and aligned, and a clamping hole is oppositely formed on the two sides of the end of the base close to one of the pin columns, the two ends of the O-shaped clamping spring are clamped in the clamping holes on the two sides of the base, and can be turned downward around the clamping hole and tightly abut against the end wall of the pin column adjacent to the clamping hole.

[0009] Preferably, the clamping holes on both sides of the base are not opposite each other, and are staggered, so that the two ends of the O-shaped clamping spring are twisted relative to each other, forming an upward or downward overturning force.

[0010] Preferably, the distance between the two pin columns is a preset distance.

[0011] Preferably, the ends of the two pin columns are respectively provided with chamfers.

[0012] Preferably, the base is rectangular.

[0013] From the above technical solution, the double-hole dumbbell pin provided by the present application has two spring pins or double-head spring pins inserted into the pin holes on the ends of the dumbbell pin body, which can double-lock the clamping block sleeved on the pin shaft. In use, when the spring pin in one of the pin holes breaks, the spring pin in the other pin hole can still lock the clamping block sleeved on the pin shaft, so that the middle grooves can still maintain effective connection, reducing the risk of pin loss of the dumbbell pin, and thus ensuring the normal operation of the scraper conveyor. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Figure 1 is a structural schematic diagram of a double-hole dumbbell pin.

[0015] Figure 2 Figure 2 is a structural schematic diagram of a double-head spring pin.

[0016] Figure 3 Figure 3 is a schematic diagram of the cooperation between the double-head spring pin and the double-hole dumbbell pin.

[0017] In the figure: dumbbell pin body 10, pin shaft 20, pin hole 21, clamping block 22, base 31, pin column 32, O-shaped clamping spring 33, clamping hole 34, chamfer 35. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Please refer to Figure 1The utility model embodiment provides a kind of double-hole dumbbell pin, including dumbbell pin body 10, two spring pins are respectively inserted in the pin hole 21 of two ends pin shaft 20 of dumbbell pin body 10, two pin holes 21 are spaced apart along the axial direction of pin shaft 20, and it is perpendicular to pin shaft 20.In installing dumbbell pin, two spring pins are respectively inserted in the two pin holes 21 of the two ends pin shaft 20 of dumbbell pin body 10, the locking of the clamping block 22 that is set on pin shaft 20 is carried out by two spring pins, and the spring pin in the other pin hole 21 can still play the role of locking to the clamping block 22 that is set on pin shaft 20 when the spring pin in one of pin hole 21 breaks in the use process of double-hole dumbbell pin, reduce the phenomenon that dumbbell pin directly falls from the middle groove of scraper conveyor, so that the effective connection between middle groove can still be maintained, and then the normal operation of scraper conveyor is guaranteed.

[0020] Please see Figure 2 The utility model further provides a double-end spring pin for being inserted in the pin hole 21 of the above-mentioned double-hole dumbbell pin, and being used in cooperation with the double-hole dumbbell pin. The double-end spring pin comprises a base 31, a pin column 32 and an O-shaped clamping spring 33. The base 31 is a horizontally arranged rectangular steel piece. The pin column 32 is two cylindrical steel pieces, which are vertically and spaced apart fixedly arranged at the bottom of the base 31 by welding or riveting. The two pin columns 32 are parallel to and aligned with each other. The spacing between the two pin columns 32 matches the hole spacing between the two pin holes 21 on the same pin shaft 20 of the above-mentioned double-hole dumbbell pin. Opposite two sides of the end of the base 31 close to one of the pin columns 32 are oppositely provided with clamping holes 34. The clamping holes 34 on the two sides of the base 31 are not directly opposite, but staggered. The two ends of the O-shaped clamping spring 33 are clamped in the clamping holes 34 on the two sides of the base 31, and can be flipped upwards or downwards around the clamping holes 34. The two clamping holes 34 that are staggered make the two ends of the O-shaped clamping spring 33 twisted with each other, so that the O-shaped clamping spring 33 forms an upward or downward flipping force under the action of the two clamping holes 34. After the O-shaped clamping spring 33 is flipped upwards, it can be away from the pin column 32 under the action of the twisting deformation of the O-shaped clamping spring 33. After the O-shaped clamping spring 33 is flipped downwards, it can be tightly close to the end side wall of the pin column 32 adjacent to the clamping hole 34 under the action of the twisting deformation of the O-shaped clamping spring 33. The connection structure and principle of the O-shaped clamping spring 33 and the base 31 are the same as those of the O-shaped safety pin in the prior art, which will not be described here.

[0021] Please see Figure 3The double-head spring pin is used to insert the two pin columns 32 into the two pin holes 21 of the double-hole dumbbell pin end pin shaft 20 after the O-shaped snap spring 33 is turned over above the base 31, and then turn the O-shaped snap spring 33 downwards to be sleeved on the end of the double-hole dumbbell pin pin shaft 20 and abut against the end wall of the pin column 32 passing through the pin hole 21. In order to facilitate installation, chamfers 35 are arranged at the ends of the two pin columns 32.

[0022] The double-head spring pin is used to insert the two pin columns 32 into the two pin holes 21 of the double-hole dumbbell pin end pin shaft 20 after the O-shaped snap spring 33 is turned over above the base 31, and then turn the O-shaped snap spring 33 downwards to be sleeved on the end of the double-hole dumbbell pin pin shaft 20 and abut against the end wall of the pin column 32 passing through the pin hole 21. In order to facilitate installation, chamfers 35 are arranged at the ends of the two pin columns 32.

[0023] The above only discloses the preferred embodiments of the utility model, of course, cannot limit the right scope of the utility model by this, and the person skilled in the art can understand that all or part of the processes of the above-mentioned embodiments are implemented, and the equivalent changes made according to the utility model claim still belong to the range covered by the utility model.

Claims

1. A dual hole dumbbell pin comprising a dumbbell pin body, characterized by: Two spring pin insertion pin holes are respectively arranged on the two ends of the dumbbell pin body, and the two pin holes are arranged along the axial direction of the pin shaft and are perpendicular to the pin shaft.

2. A double-ended spring pin for insertion into a pin hole of a dual-hole dumbbell pin, characterized by: The base, the pin post and the O-shaped clamping spring are included, the pin post is two, and is vertically and spaced apart fixedly arranged on the bottom of the base, the two pin posts are parallel to each other and aligned, the clamping holes are oppositely arranged on the two sides of the end of the base close to one of the pin posts, and the two ends of the O-shaped clamping spring are clamped in the clamping holes on the two sides of the base and can be turned over to the lower side of the base around the clamping holes and abut against the side wall of the end of the pin post adjacent to the clamping hole.

3. The double-ended spring pin of claim 2, wherein: The clamping holes on the two sides of the base are not oppositely arranged, but are staggered, so that the two ends of the O-shaped clamping spring are twisted relative to each other, and an upward or downward turning force is formed.

4. The double-ended spring pin of claim 2, wherein: The distance between the two pin posts is a preset distance.

5. The double-ended spring pin of claim 2, wherein: The end of the two pin posts is respectively provided with a chamfer.

6. The double-ended spring pin of claim 2, wherein: The base is rectangular.

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